Abstract

Apparatus for generating braking force in a vehicle brake system has at least two pressure supply devices and first and second hydraulic brake circuits, each having at least one or two hydraulic wheel brakes. Pressure in at least one brake circuit can be both built up and released by the pressure supply devices, which include a piston pump or gear pump driven by an electric motor drive and deliver continuous volume. At least one valve arrangement may adjust wheel brake pressures individually and/or disconnect/connect the wheel brakes from/to a brake circuit and/or a pressure supply device. At least one electronic control unit enables open-loop and closed-loop control. Pressure increase is enabled in one or both brake circuits, independently or in combination, using first and/or second pressure supply devices that produce changes in pressure simultaneously or temporally offset or overlapping.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
• F15B 11/22 - Synchronisation of the movement of two or more servomotors
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 13/06 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

Abstract

A brake system may include a first module, comprising a first pressure supply unit having an electromotive drive, a second pressure supply unit having an activation element, e.g., a brake pedal, and a first control apparatus for controlling the first pressure supply unit. The first module is set up to apply pressurizing medium to at least one first brake circuit via a first connection point and to at least one second brake circuit via a second connection point. The brake circuits are assigned wheel brakes, and the brake system is configured to implement an active retraction of at least one brake pad of the wheel brakes by generating a vacuum using the first pressure supply unit. Differences between/among clearances in the wheel brakes may be compensated using associated inlet valves.

IPC Classes  ?

• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system and a method for controlling a brake system. The brake system may include a first module having a first pressure supply unit with an electromotive drive, an optional second pressure supply unit and a first control device for controlling the first pressure supply unit; a second module having a third pressure supply unit, isolation valves and brake-pressure-adjusting valves, and a second control device for controlling the brake-pressure-adjusting valves; and a detection unit for detecting a first case of error. The brake system is designed such that, in the first case of error, in order to provide an ABS function and/or a yaw torque intervention, it implements a (wheel-specific and/or selective) adjustment of the pressures in the wheel brakes by actuating at least one of the brake-pressure-adjusting valves of the second module and/or the isolation valves of the second module and the first pressure supply unit.

IPC Classes  ?

• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system may include: two hydraulic brake circuits, each having at least one wheel brake; a first pressure supply device for pressure build-up and release in at least one brake circuit via forward and return travel of a piston; a second pressure supply device with a continuous delivery, electromotively-driven piston pump, gear pump, or eccentric piston pump; at least one valve assembly with valves for adjusting pressure for each wheel brake and/or for connecting/disconnecting the wheel brakes and at least one of the pressure supply devices; at least one electronic control unit; a connection line connecting the two brake circuits; and at least one outlet valve for pressure release. The wheel brakes are paired with dedicated switch valves. Each brake circuit has a hydraulic main line to connect the switch valves to the first and second pressure supply devices, which provide different maximum pressures and/or delivery volumes.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
• F15B 11/22 - Synchronisation of the movement of two or more servomotors
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 13/06 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

Abstract

An actuation device for a hydraulically operating brake system may include: a master cylinder in a housing and having at least one piston, to which a force can be applied by, e.g., a brake pedal; pressure supply device(s), at least one of which is a piston pump or double stroke piston pump having a piston and driven by an electromotive drive, the drive moving the piston directly or via a step-up gear; at least one valve assembly with magnetic valves; and at least one electronic control and regulating unit. The brake system has at least two hydraulic circuits, and a pressure change can be carried out in at least one wheel brake via the pressure supply device(s). A first housing or module, hydraulically connected to the housing, may contain the valve assembly and the at least one piston and pressure chamber of at least one of the pressure supply devices.

IPC Classes  ?

• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system may include an actuation device that may actuate a first piston-cylinder unit to apply pressure medium to at least one brake circuit via a valve device, where a piston of the first piston-cylinder unit separate first and second working chambers; a second piston-cylinder unit, having an electromotive drive and a transmission to feed pressure medium to at least one of the brake circuits via a valve device; and a motor-pump unit having a valve device to feed pressure medium to the brake circuits. The motor of the electromotive drive of the second piston-cylinder unit and the motor of the motor-pump unit may be used jointly or independently of one another, under control of a control device. The motor-pump unit is connected via two hydraulic connections, one or both of which may incorporate separating valves, to the first and second working chambers of the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include an actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves

Abstract

A brake system includes two brake circuits having brake circuit lines for two vehicle axles and at least one hydraulic wheel brake in each brake circuit. Each wheel brake is connectable to a corresponding brake circuit or brake circuit line via a paired switch valve for pressure build-up and release in the wheel brake using a pressure supply device that can build up pressure in both brake circuits. At least one circuit separating valve blocks or releases a hydraulic connection line connecting the two brake circuits. At least one outlet valve connects an accumulator container to at least one brake circuit to release pressure. A master cylinder having only one working chamber is actuable by a brake pedal. The working chamber is connectable to the brake circuit line of a brake circuit. A switch valve is used to close or release the hydraulic line.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/64 - Combined or convertible systems both single and multiple, e.g. single and tandem
• B60T 15/02 - Application and release valves

Abstract

A brake system may include a first pressure supply unit having an electromotive drive and arranged to supply pressure medium to first and second brake circuits; a motor-pump unit to supply pressure medium to at least one of the brake circuits; a second pressure supply unit, connected to the motor-pump unit via first and second hydraulic lines and arranged to supply pressure medium to at least one of the brake circuits; and a valve unit. The second pressure supply unit may be connected via a third hydraulic line to at least one of the brake circuits. The valve unit may include at least one feed valve via which the third hydraulic line may be at least partially reversibly shut off. An isolating valve may be disposed in at least one of the hydraulic lines to at least partially reversibly shut off the at least one hydraulic line.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/94 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action on a fluid pressure regulator
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 15/02 - Application and release valves
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include an actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves

Abstract

An actuating device for an entirely or partially hydraulic vehicle braking system includes a master brake cylinder with a piston and a working chamber hydraulically connectable to a reservoir, a pedal feel simulator, and, via at least one normally open valve, at least one brake circuit. At least one hydraulic wheel brake is assigned to a brake circuit and connected thereto via at least one separate controllable switching valve. A pressure supply unit has a motor-driven piston and a cylinder. At least one valve assembly includes wheel-specific solenoid pressure control valves. At least one electrical control unit controls valves of the valve assembly and the motor of the pressure supply unit. Outlet valves enable discharge of hydraulic medium from wheel brakes or brake circuits into the reservoir. One housing contains the valve assembly and hydraulic component of the pressure supply unit, and a separate housing contains the master brake cylinder.

IPC Classes  ?

• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include and actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves

Abstract

A brake system for a vehicle has at least two hydraulic brake circuits, each with at least one hydraulically acting wheel brake, and a switching valve on each hydraulically acting wheel brake, which switching valve connects in each case one hydraulically acting wheel brake to one of the two brake circuits. The brake system also has a central outlet switching valve which brings about a switchable hydraulic connection between at least one of the brake circuits and a reservoir vessel, wherein the reduction in pressure in the at least one hydraulically acting wheel brake is effected by opening the central outlet switching valve and the associated switching valve.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

A vehicle axle may include hydraulically operating wheel brakes and/or additional hydraulic loads, such as clutch plate cylinders. The vehicle axle may include at least one pressure supply device, driven by an electric-motor drive, to control pressure in the wheel brakes; at least one control and regulating device; a valve assembly having values for setting wheel-specific brake pressures and/or for disconnecting/connecting the wheel brakes from/to the pressure supply device, and at least one electric drive motor for driving and braking a vehicle wheel or the axle. At least one pressure supply device is used to control the pressure of and/or provide pressure to at least one additional brake unit in the form of an electric parking brake, a hydraulically supported electromechanical brake, an electromechanical brake and/or a force-supporting steering device, a gear actuator and/or transmission actuator, and/or a torque vectoring module.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system may include at least two wheel brake cylinder of separate wheel circuits, at least one pressure supply to provide pressure in the wheel brake cylinders, at least one reservoir, at least one electronic control and regulating unit, and switching valves arranged to connect and disconnect respective hydraulic lines connected to the respective wheel brake cylinders to/from at least one main hydraulic line coupled to the pressure supply(s). Leakage diagnostics of the individual wheel circuits and/or other components of the brake system may be carried out. The switching valves may include an electromagnetic drive and a force-adding device for operation of the valves.

IPC Classes  ?

• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include and actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems

Abstract

A vehicle axle may include hydraulically operating wheel brakes and/or additional hydraulic loads, such as clutch plate cylinders. The vehicle axle may include at least one pressure supply device, driven by an electric-motor drive, to control pressure in the wheel brakes; at least one control and regulating device; a valve assembly having values for setting wheel-specific brake pressures and/or for disconnecting/connecting the wheel brakes from/to the pressure supply device, and at least one electric drive motor for driving and braking a vehicle wheel or the axle. At least one pressure supply device is used to control the pressure of and/or provide pressure to at least one additional brake unit in the form of an electric parking brake, a hydraulically supported electromechanical brake, an electromechanical brake and/or a force-supporting steering device, a gear actuator and/or transmission actuator, and/or a torque vectoring module.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system for a vehicle may contain redundant components that permit braking force to be applied in case of partial or complete failure of a primary braking mechanism. The system may include at least one hydraulic brake circuit having at least one hydraulically operating wheel brake; a pressure supply device driven by an electric-motor drive; at least one electronic control and regulating device; a valve assembly having valves for setting wheel-specific brake pressures and/or for (dis)connecting the wheel brakes (from) to the pressure supply device; a piston-cylinder unit actuable by an actuating device, which can be connected to the at least one hydraulic brake circuit, to at least one brake unit comprising an electric drive motor, to an electric parking brake, to a hydraulically supported electromechanical brake, and/or to an electromechanical brake; at least one electric drive motor for at least one axle or wheel; and a central control unit.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/58 - Combined or convertible systems

Abstract

A hydraulic actuation system for a brake system may include at least one brake circuit including at least one wheel brake, a master cylinder that may be actuated using an actuating device and having at least one working chamber, and a hydraulic travel simulator. The working chamber may be connected via a 3/2-way valve either to a brake circuit or to the travel simulator.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/62 - Combined or convertible systems both straight and automatic
• B60T 17/00 - Component parts, details, or accessories of brake systems not covered by groups , or , or presenting other characteristic features
• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet

Abstract

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

A hydraulic actuation system for a hydraulic braking system may include at least one hydraulic circuit having at least one hydraulically actuated wheel brake and at least one pressure generating device comprising a piston pump. The at least one pressure generating device is used for pressure control or regulation in the at least one hydraulic circuit. The pressure generating device may be selectively connected to/disconnected from a supply reservoir by means of at least one control 3/2-way valve.

IPC Classes  ?

• B60T 8/34 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

A brake system for motor vehicles may include an actuation device (e.g., brake pedal), a first piston-cylinder unit having at least one piston that separates two working chambers, a control device and a pressure supply unit driven by an electric motor and having a double-stroke piston delimiting working chambers. At least one brake circuit may have associated therewith at least one wheel brake, and each wheel brake may be connected to an associated hydraulic connecting line via a controllable switching valve. An outlet valve may be assigned to a single wheel brake or to a single wheel brake of each brake circuit in a hydraulic connection between the wheel brake and a pressure medium storage container.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 15/02 - Application and release valves

Abstract

An actuation device for a hydraulic actuation system, e.g., a motor vehicle brake or an electrified clutch actuator, may include a connection for an actuation device; a pressure supply device, driven by an electromotor drive, in the form of a piston or double-stroke piston pump; a piston cylinder unit that may be actuated by means of the actuation device; and an electronic control unit. An axis of the piston cylinder unit and an axis of the pressure supply device may be arranged in parallel.

IPC Classes  ?

• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor
• F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
• F16D 121/24 - Electric or magnetic using motors

Abstract

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

1. The invention relates to a driving dynamics system for a vehicle having wheels (R1-R4), comprising: - a primary control unit (M-ECU) for detecting and/or generating steering commands and brake commands; - at least two hydraulically actuatable wheel brakes (RB1-RB4) which are each associated with one wheel (R1-R4); - at least one electrical traction motor having a traction-motor control unit, wherein the traction motor (TM1, TM2) is provided to drive at least one of the wheels (R1-R4), the primary control unit being communicatively connected to a traction-motor control unit in order to control the traction motor (TM1, TM2) to implement the steering commands and brake commands; - at least one (first) electrohydraulic pressure supply unit (BM1), wherein a brake-pressure adjustment valve in the form of a special solenoid valve (MV2k), which can in particular be shut tight, and an outlet valve (AV1-AV4) are associated with at least one of the hydraulically actuatable wheel brakes (RB1-RB4), wherein the driving dynamics system, in particular the primary control unit (M-ECU), is designed to relieve pressure from the at least one hydraulically actuatable wheel brake selectively via the associated outlet valve or via the special solenoid valve (MV2k).

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/44 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system for motor vehicles may include an actuation device (e.g., brake pedal), a first piston-cylinder unit having at least one piston that separates two working chambers, a control device and a pressure supply unit driven by an electric motor and having a double-stroke piston delimiting working chambers. At least one brake circuit may have associated therewith at least one wheel brake, and each wheel brake may be connected to an associated hydraulic connecting line via a controllable switching valve. An outlet valve may be assigned to a single wheel brake or to a single wheel brake of each brake circuit in a hydraulic connection between the wheel brake and a pressure medium storage container.

IPC Classes  ?

• B60T 13/00 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 15/02 - Application and release valves

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include and actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include and actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include and actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems

Abstract

DV1DV1) of the plunger of the first pressure supply (DV1) is aligned so as to be parallel to or perpendicular to or at an angle (φ) between 0° and 90° (degrees) to the longitudinal extent (L) of the valve device (HCU), characterised in that the second pressure supply (DV2) adjoins the valve device (HCU) and/or is at least partially arranged in same or is a component of same.

IPC Classes  ?

• B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• F16D 61/00 - Brakes with means for making the energy absorbed available for use
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs

Abstract

An actuation device for a hydraulic actuation system, e.g., a motor vehicle brake or an electrified clutch actuator, may include a connection for an actuation device; a pressure supply device, driven by an electromotor drive, in the form of a piston or double-stroke piston pump; a piston cylinder unit that may be actuated by means of the actuation device; and an electronic control unit. An axis of the piston cylinder unit and an axis of the pressure supply device may be arranged in parallel.

IPC Classes  ?

• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor
• F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
• F16D 121/24 - Electric or magnetic using motors

Abstract

1-41-4auf1-41-41-41-41-41-41-41-41-41-41-41-4) or continues to be operated to produce a braking effect.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves

Abstract

A brake system and a method for controlling a brake system. The brake system may include a first module having a first pressure supply unit with an electromotive drive, an optional second pressure supply unit and a first control device for controlling the first pressure supply unit; a second module having a third pressure supply unit, isolation valves and brake-pressure-adjusting valves, and a second control device for controlling the brake-pressure-adjusting valves; and a detection unit for detecting a first case of error. The brake system is designed such that, in the first case of error, in order to provide an ABS function and/or a yaw torque intervention, it implements a (wheel-specific and/or selective) adjustment of the pressures in the wheel brakes by actuating at least one of the brake-pressure-adjusting valves of the second module and/or the isolation valves of the second module and the first pressure supply unit.

IPC Classes  ?

• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

aufabab), in the at least one hydraulic circuit (BK1, BK2). The invention is characterized in that the pressure generating device (DV) can be selectively connected to a storage container (VB) or decoupled therefrom by means of at least one controlled 3/2-way valve (PD1, PD2).

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 8/92 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action

Abstract

The invention relates to a hydraulic actuating system for a braking system, comprising the following: - at least one brake circuit (BK) having at least one hydraulically actuated wheel brake, - a main brake cylinder (SHZ, THZ) which can be actuated by means of an actuating device, in particular in the form of a brake pedal, and which has at least one working chamber (R1, R2), - a hydraulically acting travel simulator (WS) for exerting a reaction force on the actuating device, characterised in that the working chamber (A1) can be connected via a controlled 3/2-way valve (MV) either to a brake circuit (BK) or to the travel simulator (WS).

IPC Classes  ?

• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• F16K 11/10 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit
• F16K 11/16 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle which only slides, or only turns, or only swings in one plane

Abstract

A brake device for a motor vehicle with two axles in which at least one axle has an electric traction motor for driving and braking at least one wheel arranged on an axle, and in which energy can be recovered via the traction motor during braking, each wheel having a wheel brake. The brake device includes a pressure supply having an electric motor-driven pump in the form of a piston-cylinder unit or a rotary pump, which can both build up pressure and reduce pressure, and which is part of a pressure supply device. An open-loop and closed-loop control device controls the traction motor and components of the pressure supply device such that a braking deceleration can be set by closed-loop control individually for each brake circuit, each axle or wheel brakes of an axle, with different braking torques at the respective axles or wheel brakes of an axle.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves

Abstract

A brake system may include a first pressure supply unit having an electromotive drive and arranged to supply pressure medium to first and second brake circuits; a motor-pump unit to supply pressure medium to at least one of the brake circuits; a second pressure supply unit, connected to the motor-pump unit via first and second hydraulic lines and arranged to supply pressure medium to at least one of the brake circuits; and a valve unit. The second pressure supply unit may be connected via a third hydraulic line to at least one of the brake circuits. The valve unit may include at least one feed valve via which the third hydraulic line may be at least partially reversibly shut off. An isolating valve may be disposed in at least one of the hydraulic lines to at least partially reversibly shut off the at least one hydraulic line.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/94 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action on a fluid pressure regulator
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 15/02 - Application and release valves
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

An actuation device for a hydraulically operating brake system may include: a master cylinder in a housing and having at least one piston, to which a force can be applied by, e.g., a brake pedal; pressure supply device(s), at least one of which is a piston pump or double stroke piston pump having a piston and driven by an electromotive drive, the drive moving the piston directly or via a step-up gear; at least one valve assembly with magnetic valves; and at least one electronic control and regulating unit. The brake system has at least two hydraulic circuits, and a pressure change can be carried out in at least one wheel brake via the pressure supply device(s). A first housing or module, hydraulically connected to the housing, may contain the valve assembly and the at least one piston and pressure chamber of at least one of the pressure supply devices.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force

Abstract

Apparatus for generating braking force in a vehicle brake system has at least two pressure supply devices and first and second hydraulic brake circuits, each having at least one or two hydraulic wheel brakes. Pressure in at least one brake circuit can be both built up and released by the pressure supply devices, which include a piston pump or gear pump driven by an electric motor drive and deliver continuous volume. At least one valve arrangement may adjust wheel brake pressures individually and/or disconnect/connect the wheel brakes from/to a brake circuit and/or a pressure supply device. At least one electronic control unit enables open-loop and closed-loop control. Pressure increase is enabled in one or both brake circuits, independently or in combination, using first and/or second pressure supply devices that produce changes in pressure simultaneously or temporally offset or overlapping.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
• F15B 11/22 - Synchronisation of the movement of two or more servomotors
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 13/06 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

Abstract

A brake system for a vehicle has at least one pressure supply device which is connected to a brake circuit via a hydraulic line. Furthermore, the brake system has a hydraulic connection between at least one of the brake circuits and an accumulator container, said connection being switchable via at least one outlet switch valve, and the pressure supply device has a double stroke piston with a working stroke and a return stroke. The double stroke piston can be at least partly emptied via the outlet switch valve.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

A brake system for a vehicle has at least two hydraulic brake circuits, each with at least one hydraulically acting wheel brake, and a switching valve on each hydraulically acting wheel brake, which switching valve connects in each case one hydraulically acting wheel brake to one of the two brake circuits. The brake system also has a central outlet switching valve which brings about a switchable hydraulic connection between at least one of the brake circuits and a reservoir vessel, wherein the reduction in pressure in the at least one hydraulically acting wheel brake is effected by opening the central outlet switching valve and the associated switching valve.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

A brake system may include: two hydraulic brake circuits, each having at least one wheel brake; a first pressure supply device for pressure build-up and release in at least one brake circuit via forward and return travel of a piston; a second pressure supply device with a continuous delivery, electromotively-driven piston pump, gear pump, or eccentric piston pump; at least one valve assembly with valves for adjusting pressure for each wheel brake and/or for connecting/disconnecting the wheel brakes and at least one of the pressure supply devices; at least one electronic control unit; a connection line connecting the two brake circuits; and at least one outlet valve for pressure release. The wheel brakes are paired with dedicated switch valves. Each brake circuit has a hydraulic main line to connect the switch valves to the first and second pressure supply devices, which provide different maximum pressures and/or delivery volumes.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
• F15B 11/22 - Synchronisation of the movement of two or more servomotors
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 13/06 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

Abstract

A vehicle brake system may include: two hydraulic brake circuits, each having at least one hydraulically operating wheel brake; first and second pressure supply devices; at least one valve assembly for adjusting the brake pressure for each wheel individually and/or for separating/connecting the wheel brakes from/to at least one of the pressure supply devices; at least one electronic control and regulating unit; and a hydraulic connection line connecting the two brake circuits. Each wheel brake is paired with a dedicated switch valve, and each brake circuit has a hydraulic main line via which the switch valves may be connected to the pressure supply devices. The connection line has two connection switch valves connected in series and open when unenergized via pressure present in the respective hydraulic main line and/or an inner section of a connection line connecting two connections of the connection switch valves directly together.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• F15B 11/17 - Servomotor systems without provision for follow-up action with two or more servomotors using two or more pumps
• F15B 11/22 - Synchronisation of the movement of two or more servomotors
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 13/06 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

A braking system for a vehicle may include a hydraulic brake pedal system having a master cylinder having at least one pressure chamber, from which a hydraulic output is coupled to at least one brake circuit via an infeed switch valve. The master cylinder is coupled to a reservoir via at least one opening via a hydraulic connection. A failure of a pressure chamber seal of the at least one pressure chamber of the master cylinder is safeguarded by at least one redundancy, and the failure of the pressure chamber seal or the redundancy of the pressure chamber seal of the at least one pressure chamber of the master cylinder can be diagnosed.

IPC Classes  ?

• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

An actuating device for an entirely or partially hydraulic vehicle braking system includes a master brake cylinder with a piston and a working chamber hydraulically connectable to a reservoir, a pedal feel simulator, and, via at least one normally open valve, at least one brake circuit. At least one hydraulic wheel brake is assigned to a brake circuit and connected thereto via at least one separate controllable switching valve. A pressure supply unit has a motor-driven piston and a cylinder. At least one valve assembly includes wheel-specific solenoid pressure control valves. At least one electrical control unit controls valves of the valve assembly and the motor of the pressure supply unit. Outlet valves enable discharge of hydraulic medium from wheel brakes or brake circuits into the reservoir. One housing contains the valve assembly and hydraulic component of the pressure supply unit, and a separate housing contains the master brake cylinder.

IPC Classes  ?

• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force

Abstract

A brake system includes two brake circuits having brake circuit lines for two vehicle axles and at least one hydraulic wheel brake in each brake circuit. Each wheel brake is connectable to a corresponding brake circuit or brake circuit line via a paired switch valve for pressure build-up and release in the wheel brake using a pressure supply device that can build up pressure in both brake circuits. At least one circuit separating valve blocks or releases a hydraulic connection line connecting the two brake circuits. At least one outlet valve connects an accumulator container to at least one brake circuit to release pressure. A master cylinder having only one working chamber is actuable by a brake pedal. The working chamber is connectable to the brake circuit line of a brake circuit. A switch valve is used to close or release the hydraulic line.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/64 - Combined or convertible systems both single and multiple, e.g. single and tandem
• B60T 15/02 - Application and release valves

Abstract

A vehicle axle may include hydraulically operating wheel brakes and/or additional hydraulic loads, such as clutch plate cylinders. The vehicle axle may include at least one pressure supply device, driven by an electric-motor drive, to control pressure in the wheel brakes; at least one control and regulating device; a valve assembly having values for setting wheel-specific brake pressures and/or for disconnecting/connecting the wheel brakes from/to the pressure supply device, and at least one electric drive motor for driving and braking a vehicle wheel or the axle. At least one pressure supply device is used to control the pressure of and/or provide pressure to at least one additional brake unit in the form of an electric parking brake, a hydraulically supported electromechanical brake, an electromechanical brake and/or a force-supporting steering device, a gear actuator and/or transmission actuator, and/or a torque vectoring module.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system for a vehicle may contain redundant components that permit braking force to be applied in case of partial or complete failure of a primary braking mechanism. The system may include at least one hydraulic brake circuit having at least one hydraulically operating wheel brake; a pressure supply device driven by an electric-motor drive; at least one electronic control and regulating device; a valve assembly having valves for setting wheel-specific brake pressures and/or for (dis)connecting the wheel brakes (from)to the pressure supply device; a piston-cylinder unit actuable by an actuating device, which can be connected to the at least one hydraulic brake circuit, to at least one brake unit comprising an electric drive motor, to an electric parking brake, to a hydraulically supported electromechanical brake, and/or to an electromechanical brake; at least one electric drive motor for at least one axle or wheel; and a central control unit.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system for a vehicle may include at least two hydraulic brake circuits, each having at least one hydraulically acting wheel brake, at least two pressure supply devices, each of which is driven by an electromotive drive, at least one valve assembly having valves for the wheel-individual adjustment of brake pressures and/or for separating the wheel brakes from, or connecting same to, a pressure supply device, at least one electronic control and regulating unit, one of which is a superordinate central control unit that controls individual control and regulating units of the components of the brake system, as well as at least one additional electric drive motor for at least one axle or wheel of the vehicle. The brake system may use the at least one pressure supply device and/or the at least one electric drive motor for controlling pressure in at least one wheel brake for steering interventions.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 8/94 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action on a fluid pressure regulator

Abstract

A pressure generating device may comprise a piston-cylinder unit having a bilaterally acting piston with two effective surfaces defining two respective, separate working spaces in a sealing manner. Each working space is connected via a hydraulic line to a hydraulic circuit, wherein at least one hydraulic chamber of a consumer is connected to each hydraulic circuit, and wherein a drive drives the piston. Each working space may be in communication with a reservoir for hydraulic medium, via a respective hydraulic line having a respective switching valve. Alternatively, one or both working spaces may be in communication with a reservoir for hydraulic medium via a hydraulic line, with a switching valve in one or both hydraulic lines, and/or a respective outlet valve may be associated with one or more hydraulic chambers of the consumer, and a further connecting line having a switching valve may connect the pressure chambers and/or hydraulic lines.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/17 - Using electrical or electronic regulation means to control braking
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/58 - Combined or convertible systems
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 11/16 - Master control, e.g. master cylinders

Abstract

The invention relates to a brake system for a vehicle, which comprises at least one pressure supply device which is connected to a brake circuit via a hydraulic line. The brake system also comprises a switching valve for each hydraulically acting wheel brake, which switchably connects each hydraulically acting wheel brake to one of the two brake circuits. Furthermore, the brake system comprises a bypass switching valve between the two brake circuits and two outlet switching valves between at least one of the brake circuits and a reservoir.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters

Abstract

The invention relates to a brake system for a vehicle with a pressure supply device, which is connected to a brake circuit via a hydraulic line, and a switching valve for each hydraulically acting wheel brake. The brake system also comprises a hydraulic connection between two brake circuits which is switchable via at least two bypass switching valves arranged in series, the bypass switching valve being switchably connected to a second brake circuit via the other bypass switching valve; and a hydraulic connection between one of the brake circuits and a reservoir which is switchable via an outlet switching valve.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

The invention relates to a braking system for a vehicle, which comprises a hydraulic brake pedal system including a master cylinder having at least one pressure chamber, a hydraulic output of which is switchably coupled to at least one brake circuit via an infeed switch valve, and wherein the master cylinder is coupled to a reservoir via at least one opening via a hydraulic connection. According to the invention, a pressure chamber seal of the at least one pressure chamber of the master cylinder is protected from failure by at least one redundant element and the failure of the pressure chamber seal or of the redundant element of the pressure chamber seal of the at least one pressure chamber of the master cylinder can be diagnosed.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration

Abstract

The invention relates to a driving dynamics system for a motor vehicle, comprising: - a primary control unit (M-ECU) for detecting and/or generating steering commands and braking commands; - a braking system having a first electrohydraulic pressure supply unit (DV1) and a second electrohydraulic pressure supply unit (DV2); - four hydraulically actuatable wheel brakes (RB1-RB4) which are assigned to wheels (R1- R4); - electrically actuatable brake pressure adjusting valves (EV1-EV4, AV1-AV4, SV1-SV4); - an in particular electrical steering actuator (EPS) for actuating at least one axle. The driving dynamics system is designed to implement at least one steering command, in particular in the normal operating mode, by controlling at least one of the pressure supply units (DV1, DV2) and the steering actuator (EPS), and/or to implement a braking command in the normal operating mode by controlling at least the second pressure supply unit (DV2) and at least the brake pressure adjusting valves (EV1-EV4, AV1-AV4, SV1-SV4) for pressure adjustment for individual wheels, and, in a (first) case of malfunction, controlling at least the first pressure supply unit (DV1) and at least the brake pressure adjusting valves (EV1-EV4, AV1-AV4, SV1-SV4) for pressure adjustment for individual wheels.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 8/18 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means

Abstract

The invention relates to a brake system and a method for controlling a brake system. A brake system (2) is provided, comprising: a first module having a first pressure supply unit (6) with an electromotive drive (8), an optional second pressure supply unit (14) and a first control device (9) for controlling the first pressure supply unit (6); a second module having a third pressure supply unit (90), in particular a motor-pump unit (91), isolation valves (USV1, USV2, HSV1, HSV2) and brake-pressure-adjusting valves (AVl-AV4, EV1-EV4), and a second control device (95) for controlling the brake-pressure-adjusting valves (AV1- AV4, EV1-EV4); and a detection unit for detecting a first case of error, in particular an at least partial failure of the third pressure supply unit (90); wherein the brake system (2) is designed such that, in the first case of error, in order to provide an ABS function and/or a yaw torque intervention, it implements a (wheel-specific and/or selective) adjustment of the pressures in the wheel brakes by actuating at least one of the brake-pressure-adjusting valves (AV1-AV4, EV1-EV4) of the second module and/or the isolation valves (USV1, USV2, HSV1, HSV2) of the second module and the first pressure supply unit (6).

IPC Classes  ?

• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system may include an actuation device that may actuate a first piston-cylinder unit to apply pressure medium to at least one brake circuit via a valve device, where a piston of the first piston-cylinder unit separate first and second working chambers; a second piston-cylinder unit, having an electromotive drive and a transmission to feed pressure medium to at least one of the brake circuits via a valve device; and a motor-pump unit having a valve device to feed pressure medium to the brake circuits. The motor of the electromotive drive of the second piston-cylinder unit and the motor of the motor-pump unit may be used jointly or independently of one another, under control of a control device. The motor-pump unit is connected via two hydraulic connections, one or both of which may incorporate separating valves, to the first and second working chambers of the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

An actuation device for a hydraulic actuation system, e.g., a motor vehicle brake or an electrified clutch actuator, may include a connection for an actuation device; a pressure supply device, driven by an electromotor drive, in the form of a piston or double-stroke piston pump; a piston cylinder unit that may be actuated by means of the actuation device; and an electronic control unit. An axis of the piston cylinder unit and an axis of the pressure supply device may be arranged in parallel.

IPC Classes  ?

• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor
• F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
• F16D 121/24 - Electric or magnetic using motors

Abstract

A brake system for a motor vehicle may include at least one pressure supply device, formed by a hydraulic piston-cylinder unit driven by an electric motor, for hydraulic adjustment of a brake piston of at least one wheel brake, and at least one electromechanically actuatable wheel brake for electrical adjustment of a brake piston of a wheel brake. An electric motor and a first gearbox, which transmits the driving force of the electric motor to a further gearbox, are provided for electromechanical actuation of the wheel brake. The electromechanically actuatable wheel brake has a hydraulic control device having a piston-cylinder unit, the control piston of which serves for adjusting the brake piston and/or exerting a force on the brake piston. The control piston can be adjusted or a force can be exerted on the control piston.

IPC Classes  ?

• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system for a motor vehicle may comprise an actuating device, in particular a brake pedal, a pressure supply device, in particular a hydraulic piston-cylinder unit driven by an electric motor driven, for hydraulically adjusting a brake piston of at least one wheel brake, wherein the pressure supply device works in particular on wheel brakes of the front axle of the motor vehicle, and having at least one electromechanically actuatable wheel brake, for electrically adjusting a brake piston of the wheel brake, in particular for the rear wheels of the motor vehicle. For electromechanically actuating the wheel brake, an electric motor and a first transmission, which transmits the driving force of the motor to a further transmission, in particular a ball-screw transmission, are provided. One or more (hydraulic and/or electric) components or subsystems of the brake system are designed to have at least one layer of redundancy.

IPC Classes  ?

• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated

Abstract

A helical gearing for driving an adjusting element, which may be an actuator or a piston of a piston-cylinder unit, is driven by an electric motor. The adjusting element may be moved along an axis. The drive apparatus has a rotor, or a translator rotatably mounted in a housing by a bearing and fixedly connected to the input of or formed integrally with the helical gearing. The output of the helical gearing is connected to or formed integrally with the adjusting element. An anti-twist means may prevent the adjusting element from twisting in the circumferential direction about the axis. The helical gearing and/or at least part of the adjusting element is/are formed to be transversely elastic to the axis of rotation, at least in one region.

IPC Classes  ?

• F16H 25/20 - Screw mechanisms
• F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
• F16H 25/24 - Elements essential to such mechanisms, e.g. screws, nuts
• F16H 61/30 - Hydraulic motors therefor
• F16H 61/28 - Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted

Abstract

A brake system may include an actuation device, in particular a brake pedal, a first piston-cylinder unit with two pistons, in particular an auxiliary piston and a second piston, in order to supply a pressure medium to brake circuits via a valve device. One of the pistons, in particular the auxiliary piston, can be actuated by means of the actuation device. The brake system may further include a second piston-cylinder unit with an electric motor-powered drive, a transmission, and at least one piston to supply a pressure medium to at least one of the brake circuits via a valve device and a motor-pump unit with a valve device to supply a pressure medium to the brake circuits. According to one aspect, a hydraulic travel simulator is connected to a pressure or working chamber of the first piston-cylinder unit.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices

Abstract

iia1a2b1b2b1b2A1A2a1a2a2) is hydraulically connected to the pressure supply outlet (DVa) directly or by means of a connection line (VLd). An open-loop and closed-loop control apparatus (ECU) controls the at least one electric traction motor (TM) and the components of the pressure supply apparatus (DV1) in such a way that, in the interaction of the pressure supply apparatus (DV1, DV2) and the at least one electric traction motor (TM1, TM2, TM3), a braking deceleration can be set for each brake circuit (BK1, BK2), each axle (A1, A2) or the wheel brakes of an axle (A1, A2), individually, i.e. with different braking torques at the axles (A1, A2) or wheel brakes of an axle (A1, A2).

IPC Classes  ?

• B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/17 - Using electrical or electronic regulation means to control braking
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

The invention relates to a pressure supply device with an electromotive drive (21, 23) arranged in a drive housing (18, 22) and a gear pump (Z) which is driven by the electromotive drive, wherein the drive (21, 23) has a stator (23) and a rotor (21), and the gear pump (Z) has a gear (2) coupled to the rotor (21), a wall (18, 40) being arranged between the rotor (21) and the gear (2). The invention is characterized in that at least one seal (13.1) is arranged between the rotor (21) and the gear (2) such that the rotor (21) is a dry-running rotor, around which the medium delivered by the gear (2) does not flow and/or which the medium does not surround.

IPC Classes  ?

• F04C 2/08 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
• F04C 2/10 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
• F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups

Abstract

The invention relates to a pressure supply unit for a hydraulic system with at least one consumer circuit (BK1, BK2) and with at least one rotary pump (Pa, Pb), wherein - either a conveyance of volume in at least one conveying direction into at least one consumer circuit (BK1, BK2) is performed by means of at least one rotary pump (Pa, Pb) such that a certain required volume (V for example in [cm3]) of hydraulic medium is conveyed, in particular for a pressure build-up (Pauf), pressure dissipation (Pab) and/or an adjustment of an assembly, and/or - that at least two rotary pumps (Pa, Pb) are provided, wherein the pressure in at least one consumer circuit (BK1, BK2) can be built up and dissipated by means of corresponding electrical energization of the respective electric motor drive (Ma, Mb) of at least one of the rotary pumps (Pa, Pb).

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters

Abstract

A gearwheel pump (Z) in the form of an internal gearwheel pump or a toothed-ring pump or gerotor pump, having an inner gearwheel (2), which is driven by a drive shaft (1), and having an internally toothed ring (3), wherein the axis (2a) of the inner gearwheel (2) is arranged coaxially with respect to the axis (3a) of the internally toothed ring (3). The inner gearwheel (2) and the internally toothed ring (3) are arranged in an axial direction between two housing parts (7.1, 7.1b, 7.2), wherein the housing parts (7.1, 7.1b, 7.2) are cohesively connected to one another directly or via at least one interposed part (4), in particular in the form of a ring. Alternatively, the housing parts (7.1, 7.1a, 7.2) are pressed against one another by means of at least one elastic and/or resilient part (41).

IPC Classes  ?

• F04C 2/08 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
• F04C 2/10 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
• F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups

Abstract

The disclosure relates to an actuating system for a vehicle brake, with an actuating arrangement, in particular a brake pedal, at least one (first) piston-cylinder unit, which is connected via a hydraulic line to the vehicle brake (braking circuit) in order to supply the braking circuit with pressure medium and apply pressure to the vehicle brake, and with a drive for the piston-cylinder unit. Pressure medium can be fed to the braking circuit in controlled manner in both piston movement directions, in particular the advance stroke and the return stroke, by means of at least one, in particular stepped, piston of the piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/34 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves

Abstract

A piston-cylinder unit includes a piston delimiting at least one working chamber, in which a first seal for sealing at least one first working chamber is arranged either between the piston and cylinder or between a plunger connected to the piston and the cylinder. A second seal is arranged between the first seal and the first working chamber, and the piston-cylinder unit further includes a first channel arranged in the wall of the cylinder or in the piston, which joins the first seal and the second seal in the inner chamber of the cylinder. The first channel and/or a hydraulic line connected thereto may have a throttle device and/or a valve device. An electronic control and regulating device may have a diagnosis or monitoring function for a possible defect or failure of a seal. Multiple hydraulic devices may have such piston-cylinder units and respective control and such regulating devices.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 11/236 - Piston sealing arrangements
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 15/36 - Other control devices or valves characterised by definite functions
• F15B 13/02 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
• F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere

Abstract

A brake system (2) is specified, having • a first pressure supply unit (6), with an electromotive drive (8) which is configured to charge at least one first brake circuit (BK1) and at least one second brake circuit (BK2) with a pressure medium, • a motor-pump unit (90) which is configured to charge at least one of the brake circuits (BK1, BK2) with the pressure medium, • a second pressure supply unit (14) which is configured to charge at least one of the brake circuits (BK1, BK2) with the pressure medium, wherein the second pressure supply unit (14) is connected via at least one first hydraulic line (HL1) and via at least one second hydraulic line (HL2) to the motor-pump unit (90), • a valve unit (50), wherein at least one of the brake circuits (BK1) is connected to the second pressure supply unit (14) via at least one third hydraulic line (HL3), wherein the valve unit (50) comprises at least one infeed valve (FV, 69) by means of which the third hydraulic line (HL3) can be at least partially reversibly shut off, wherein, in at least one of the hydraulic lines (HL1, HL2), there is arranged an isolating valve (BP1, BP2, TV1, TV2) by means of which the respective hydraulic line (HL1, HL2) can be at least partially reversibly shut off.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The invention relates to an activation device for a brake system, comprising the following: • - a hydraulic pressure supply device having a piston which can be adjusted by means of an electric motor-operated drive, • - an electronic control unit (ECU) which has a housing (18), • - a sensor target which is connected to the rotor (64) or to a threaded part (56) which can rotate about an axis (a DVI ), • - a sensor element which is arranged in a sensor housing (52, 52a), characterized in that the sensor housing (52, 52a) is either • - connected to the housing (18) of the electronic control unit (ECU) by means of an elastic connection and/or • - has an inner housing part (52a) and an outer housing part (52), wherein at least one housing part (52, 52a) is connected to the housing (18) of the control unit (ECU), wherein an elastic part (61), or at least one spring, presses areas of the at least one housing part (52, 52a) against an area of the housing (18) of the electronic control unit (ECU).

IPC Classes  ?

• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor

Abstract

The invention relates to an actuation device for a hydraulically operating brake system, having the following components: - a master cylinder (HZ) that is arranged in a housing (C) and comprises at least one piston, to which a force can be applied by an actuation device, in particular in the form of a brake pedal, - at least one pressure supply device (DV1, DV2), at least one of which (DV1) is a piston pump or a double stroke piston pump that is driven by an electromotive drive (M), wherein the drive (M) moves the piston of the piston pump or double stroke piston pump directly or via a step-up gear, in particular a recirculating ball gear, - at least one valve assembly (HCU) with magnetic valves, and - at least one electronic control and regulating unit (ECU). The brake system has at least two hydraulic circuits (BK1, BK2), and a pressure change can be carried out by means of the pressure supply device (DV1) in at least one wheel brake (RB1, RB2, RB3, RB4) paired with a hydraulic circuit (BK1, BK2). The invention is characterized in that the valve assembly (HCU) and the at least one piston and pressure chamber of at least one pressure supply device (DV1, DV2) are arranged in a first housing (A) or together form a unit or module, and the housing (C) of the actuation device is hydraulically connected to the first housing (A) or the unit or the module.

IPC Classes  ?

• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated

Abstract

max 'maxmax ).

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The invention relates to an apparatus for generating braking force in a vehicle having a brake system having at least two pressure supply devices (DV1, DV2) driven by an electric motor: the brake system having a first and a second hydraulic brake circuit (BK1, BK2) each having at least one or two hydraulically acting wheel brakes (RB1, RB2, RB3, RB4); and it being possible for pressure in at least one brake circuit (BK1, BK2) to be both built up and released by the pressure supply devices (DV1, DV2); a pressure supply device (DV2) being a pump driven by an electric motor drive, in particular a piston pump or a gear pump, and having continuous volume delivery; at least one valve arrangement (HCU) being provided having valves for adjusting the brake pressures individually for each wheel and/or for disconnecting and/or connecting the wheel brakes (RB1, RB2, RB3, RB4) from and/or to a brake circuit and/or a pressure supply device (DV1, DV2); at least one electronic control unit (ECU) for open-loop and closed-loop control being provided for controlling the brake system or parts thereof; each brake circuit (BK1, BK2) comprising a hydraulic master line (4, 5) by means of which the wheel brakes (RB1, RB2, RB3, RB4) are or can be connected to each of the two pressure supply devices (DV1, DV2); characterised in that the brake system is designed such that a change in pressure, in particular a build up of pressure, can be carried out, both independently and in combination, by means of the first and/or the second pressure supply device (DV1, DV2) in one or both brake circuits (BK1, BK2), the pressure supply devices (DV1, DV2) producing changes in pressure, in particular a build up of pressure, simultaneously, in particular at the same time, or partly simultaneously, in particular in a temporally offset or temporally overlapping manner.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

updowndown), wherein a pressure supply unit (DV1) is provided, which is driven by an electric motor (2) and the piston of which can be adjusted in the cylinder by means of the electric motor (2), at least one valve assembly (HCU) is provided, which has solenoid valves for wheel-specific pressure control, at least one electrical control unit (ECU) is provided for controlling at least valves of the valve assembly (HCU) and the motor of the pressure supply unit (DV1), and at least one controlled outlet valve (AV) is provided, via which hydraulic medium can be directly discharged from the particular wheel brake (RB) or the brake circuit (BK1, BK2) into the reservoir (VB), in particular during controlled operation (ABS), and wherein the valve assembly (HCU) and the hydraulic component of the pressure supply unit (DV) are arranged in a housing (A), and the master brake cylinder (HZ) is arranged in a separate housing (C).

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The invention relates to a brake system for a vehicle, having the following components: - two hydraulic brake circuits (BK1, BK2), each of which comprises at least one hydraulically operating wheel brake (RB1, RB2, RB3, RB4), - a first and a second pressure supply device (DV1, DV2) for supplying pressure to the wheel brakes (RB1, RB2, RB3, RB4), - at least one valve assembly (HCU) with valves for adjusting the brake pressure for each wheel individually and/or for separating or connecting the wheel brakes (RB1, RB2, RB3, RB4) from or to at least one of the two pressure supply devices (DV1, DV2), - at least one electronic control and regulating unit (ECU), and - a hydraulic connection line (VL) which connects the two brake circuits (BK1, BK2), wherein each wheel brake (RB1, RB2, RB3, RB4) is paired with a dedicated switch valve (SV), and each brake circuit (BK1, BK2) has a hydraulic main line (4, 5), via which the switch valves (SV) are connected to or can be connected to the pressure supply devices (DV1, DV2). Two connection switch valves (BP1, BP2) which are connected in series and are open in an unenergized state are arranged in the connection line (VL), and the connection switch valves (BP1, BP2) are arranged so as to open in the unenergized state in a supported manner by a pressure present in the respective hydraulic main line (4, 5) and/or the inner section (VLa) of the connection line (VL), said inner section connecting the two connections of the connection switch valves (BP1, BP2) directly together, is connected to the pressure chamber (A1) of a master cylinder (HZ) via an additional hydraulic line (3). At least one valve (FV) is arranged in the additional hydraulic line (3) in order to selectively block said hydraulic line.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration

Abstract

iaufabaufabab) via the switch valve (SV) paired with the wheel brake into the respective brake circuit (BK1, BK2) and selectively via the switchable central outlet valve (ZAV) and/or into at least one pressure supply device (DV1, DV2).

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

aufabaufauf) in both hydraulic circuits (K1, K2), - at least one circuit separating valve (BP1, BP2) which is used to selectively block or release a hydraulic connection line (VL) which connects the two hydraulic circuits (K1, K2), - at least one outlet valve (ZAV, ZAV1) via which an accumulator container (VB) can be connected to at least one hydraulic circuit (K1, K2) directly or via a circuit separating valve (BP1, BP2) in order to release pressure (Pab), and - a hydraulic connection (1, 2) between the pump of the pressure supply device (DV, DV1, DV2) and the paired hydraulic circuit (K1, K2), wherein either a controlled feed valve (PD1) is provided for selectively blocking and releasing the hydraulic connection (1, 2) or a non-return valve (RV2, RV3) is provided for connecting a return flow from the hydraulic circuit (K1, K2) into the pressure supply device (DV, DV1, DV2) or the pump thereof via the hydraulic connection (1, 2), and - the pressure in at least one hydraulic component (RB1-4) is released (Pab) either via a pressure supply device (DV1, DV2) or via an outlet valve (ZAV, ZAV1) according to the state of the hydraulic system and/or the pressure regulating situation.

IPC Classes  ?

• B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The invention relates to a brake system for a vehicle, which system has at least two hydraulic brake circuits, each with at least one hydraulically acting wheel brake, and a switching valve on each hydraulically acting wheel brake, which switching valve connects in each case one hydraulically acting wheel brake to one of the two brake circuits. According to the invention, the brake system also has a central outlet switching valve which brings about a switchable hydraulic connection between at least one of the brake circuits and a reservoir vessel, wherein the reduction in pressure in the at least one hydraulically acting wheel brake is effected by opening the central outlet switching valve and the associated switching valve

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means

Abstract

The invention relates to a brake system for a vehicle, having at least one pressure supply device which is connected to a brake circuit via a hydraulic line. Furthermore, the brake system has a hydraulic connection between at least one of the brake circuits and an accumulator container, said connection being switchable via at least one outlet switch valve, wherein the pressure supply device has a double stroke piston with a working stroke and a return stroke. According to the invention, the double stroke piston can be at least partly emptied via the outlet switch valve.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs

Abstract

aufabaufabab) directly or via a circuit separating valve (BP1, BP2). A master cylinder (SHZ) which can be actuated by an actuation device, in particular in the form of a brake pedal (1), is provided with only one working chamber (110), and the working chamber can be hydraulically connected to the brake circuit line (HL4, HL5) of a brake circuit (BK1, BK2) via a hydraulic line (HL2, HL3) directly or via a circuit separating valve (BP1, BP2), and a switch valve (FV), in particular a switch valve which is open in an unenergized state, is used to selectively close or release the hydraulic line (HL2, HL3).

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means

Abstract

An actuating device for a motor vehicle brake may include an actuating device/brake pedal, a pressure supply device driven by an electric motor, a (master) piston-cylinder unit that may be actuated by the actuating device, and which is connected hydraulically with a fluid reservoir, a valve assembly for wheel-specifically adjusting brake pressures and for connecting or disconnecting the wheel brakes to/from the pressure supply device and the piston-cylinder unit, an electronic control unit, and one or more sensor devices that may be used to provide sense various conditions and to provide inputs to the electronic control unit.

IPC Classes  ?

• B60T 8/34 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

The invention relates to a vehicle axle (VA, HA) having hydraulically operating wheel brakes (RB1, RB2; RB3, RB4) and/or additional hydraulic loads, in particular clutch plate cylinders, comprising the following components: at least one pressure supply device (DV1, DV2) for controlling the pressure in the wheel brakes (RB1-RB4, H-EMB), which pressure supply device is driven by an electric-motor drive (M1, M2); at least one electronic open-loop and closed-loop control device (DV ECU1, DV ECU2) and a valve assembly (HCU) having values for setting wheel-specific brake pressures and/or for disconnecting the wheel brakes (RB1, RB2, RB3, RB4, H-EMB) from or connecting the same to the pressure supply device (DV1, DV2); at least one electric drive motor (TM, TM1, TM2) for driving and braking a vehicle wheel or the vehicle axle, characterized in that at least one pressure supply device (DV1, DV2) is used to control the pressure of and/or provide pressure to at least one additional brake unit (BA) in the form of an electric parking brake (EPB), a hydraulically supported electromechanical brake (H-EMB), an electromechanical brake (EMB) and/or a force-supporting, in particular hydraulically operating, steering device (EPS), a gear actuator and/or transmission actuator, and/or a torque vectoring module.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

The invention relates to a brake system for a vehicle, the brake system comprising the following components: at least two hydraulic brake circuits (BK1, BK2), each having at least one hydraulically acting wheel brake (RB1, RB2, RB3, RB4), at least two pressure supply devices (DV1, DV2), each of which is driven by an electromotive drive (M1, M2), at least one valve assembly (HCU) having valves for the wheel-individual adjustment of brake pressures and/or for separating the wheel brakes (RB1, RB2, RB3, RB4) from, or connecting same to, a pressure supply device (DV1, DV2), at least one electronic open-loop and closed-loop control unit, wherein one of which is a superordinate central control unit (M-ECU) that controls the individual open-loop and closed-loop control units of the components of the brake system, as well as at least one additional electric drive motor (TM1, TM2) is provided for at least one axle or wheel of the vehicle, which drive motor is used to drive and decelerate the axle or the wheel. The invention is characterized in that, for steering interventions (torque vectoring), the brake system uses the at least one pressure supply device (DV1, DV2), for controlling the pressure in at least one wheel brake (RB), and/or the at least one electric drive motor (TM1, TM2), particularly in a supportive manner. Moreover, at least one pressure supply device (DV1, DV2) is provided, which has two electronic open-loop and closed-loop control units (ECU1, ECU2), which are independent of one another, or a twice-redundant open-loop and closed-loop control unit (DV1-ECU, DV2-ECU) for controlling the electromotive drive (M1, M2) thereof, and/or each pressure supply device (DV1, DV2) is assigned to one brake circuit (BK1, BK2) for controlled operation of the brake system, and a connection module (VM) is provided for optionally connecting the brake circuits (BK1, BK2) in such a way that in the event of a failure of one pressure supply device (DV1, DV2), pressure supply or pressure control for both brake circuits (BK1, BK2) is performed by the other, still functioning pressure supply device (DV1, DV2).

IPC Classes  ?

• B60T 13/12 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid

Abstract

The invention relates to a braking system for a vehicle, comprising the following components: at least one hydraulic brake circuit (BK1, BK2) each having at least one hydraulically operating wheel brake (RB1, RB2, RB3, RB4, H-EMB); a pressure supply device (DV1, DV2) for controlling the pressure in the wheel brakes (RB1-RB4, H-EMB), which are driven by an electric-motor drive (M1, M2), the primary braking device additionally comprising at least one electronic open-loop and closed-loop control device (DV ECU1, DV ECU2) and a valve assembly (HCU) having valves for setting wheel-specific brake pressures and/or for disconnecting the wheel brakes (RB1, RB2, RB3, RB4, H-EMB) from or connecting the same to the pressure supply device (DV1, DV2); a piston-cylinder unit (HZ), which can be actuated by means of an actuating device (BE), in particular in the form of a brake pedal, and which is or can be connected to at least one hydraulic brake circuit, to at least one brake unit (BA), in particular to an electric drive motor (TM) having a power of greater than or equal to 30 kW, to an electric parking brake (EPB), to a hydraulically supported electromechanical brake (H-EMB) and/or to an electromechanical brake (EMB); at least one electric drive motor (TM1, TM2) for at least one axle or one wheel of the vehicle, which electric drive motor is used to drive and brake the axle or the wheel; a central control unit (M-ECU) for controlling the braking system and the electric drive motor(s) (TM1, TM2), characterized in that one or more components, or their sub-components, of the primary braking device are redundant, and that, in the event of a partial or complete failure of the primary braking device, a braking force can be produced at at least one axle or at least one wheel by means of the components of the primary braking device, of the actuating device and/or of at least one brake unit that are still able to function.

IPC Classes  ?

• B60T 13/58 - Combined or convertible systems
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

A brake system may include an actuating device, in particular a brake pedal; a first piston-cylinder unit having two pistons subjecting the brake circuits to a pressure medium via a valve device, wherein one of the pistons can be actuated by the actuation device; a second piston-cylinder unit having an electric motor drive, a transmission at least one piston to supply at least one of the brake circuits with a pressure medium via a valve device; and a motor pump unit with a valve device to supply the brake circuits with a pressure medium. The brake system may also include a hydraulic travel simulator with a pressure or working chamber which is connected to the first piston-cylinder unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
• B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
• B60T 13/58 - Combined or convertible systems
• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure

Abstract

A device for a hydraulic actuating system, e.g., a motor vehicle brake, a clutch or a gear selector, may include the following components arranged in one housing, forming a main module: at least one pressure supply device driven by an electric motor drive, and a valve arrangement comprising at least one solenoid valve. The device may further include an electrical control unit (ECU) and valve output stages and sensors. The main module may be electrically and/or hydraulically connected to at least one further system component, which system component may include and actuating device and a travel simulator.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
• B60T 13/66 - Electrical control in fluid-pressure brake systems

Abstract

The invention relates to a helical gearing driven by an electric motor for driving an adjusting element (5), more particularly in the form of an actuator or a piston of a piston-cylinder unit, wherein the adjusting element (5) can be moved by means of an electric drive (2) and a helical gearing (S, SM), more particularly in the form of a spindle drive, back and forth along a path, more particularly axis (AX), wherein the drive (2) has a rotor (3), or a translator (3') driven by a drive, the rotor (3) or translator (3') being rotatably mounted in a housing (1) by means of a first bearing (L1) and being fixedly connected to the input (ES) of the helical gearing (S, SM) or formed integrally with same, and the output (AS) of the helical gearing (S, SM) is connected to the adjusting element (5) or formed integrally with same, wherein an anti-twist means (VS) prevents the adjusting element (5) from twisting in the circumferential direction about the path or axis (AX), characterised in that the anti-twist means (VS) is arranged in or on the end region (5e) of the adjusting element (5) or the end region (5e) is part of the anti-twist means (VS), wherein the end region (5e) is the region of the adjusting element (5) facing away from the helical gearing (S, SM), and/or between the first bearing (L1) and the adjusting element (5), the rotor (3) or translator (3'), the helical gearing (S, SM) and/or at least part of the adjusting element (5) is or are formed to be transversely elastic to the axis of rotation, at least in one region, wherein the at least one region has more particularly a spring element (FE) or a region with higher elasticity.

IPC Classes  ?

• F16H 25/20 - Screw mechanisms
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• F16D 65/28 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged apart from the brake
• F04B 9/02 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors

Abstract

The invention relates to a brake system having - an actuation device, in particular a brake pedal, - a first piston-cylinder unit (THZ, main cylinder), which is actuatable by means of the actuation device so as to apply pressure medium to at least one brake circuit in particular via a valve device, - wherein the first piston-cylinder unit (main cylinder) comprises a piston (12) which separates a first working chamber (12e) and a second working chamber (12d) from one another, - a second piston-cylinder unit (DV, pressure supply), having an electromotive drive and a transmission so as to feed pressure medium to at least one of the brake circuits (BK1 and BK2) via a valve device, and - a motor-pump unit (ABS/ESP unit) having a valve device so as to feed pressure medium to the brake circuits (BK1 and BK2), - wherein the motor of the electromotive drive of the second piston-cylinder unit (DV) and the motor of the motor-pump unit (ABS/ESP) are usable jointly or independently of one another by means of a control device, - wherein the motor-pump unit (ABS/ESP unit) is connected via two hydraulic connections (HL1, HL2) to the first working chamber (12e) and to the second working chamber (12d), characterised in that a separating valve (TV1) is arranged only in one hydraulic connection (HL1) or a separating valve (TV1, TV2) is arranged in each of two hydraulic connections for selectively opening or closing the hydraulic connections (HL1, HL2).

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

B1B2B1B1).

IPC Classes  ?

• F16J 1/00 - PistonsTrunk pistonsPlungers
• F16J 15/00 - Sealings
• B60T 11/236 - Piston sealing arrangements
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
• F16H 25/20 - Screw mechanisms
• F16D 65/28 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged apart from the brake

Abstract

The invention specifies a brake system (2) having a first pressure supply unit (6), having an electric motor drive (8), which is designed to apply a pressure medium to at least one braking circuit (BK1 , BK2), having a motor-pump unit (12), which is designed to apply the pressure medium to the at least one braking circuit (BK1, BK2), and having a second pressure supply unit (14) which is designed to apply the pressure medium to the at least one braking circuit (BK1, BK2), wherein the at least one braking circuit (BK1, BK2) is connected to the second pressure supply unit (14) via at least one hydraulic supply line (HL3), and at least one valve (69), via which the hydraulic supply line (HL3) can be at least partly reversibly shut off, is arranged in the valve unit (50).

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The invention relates to a brake system for a motor vehicle, having at least one pressure supply device (DV), in particular a hydraulic piston-cylinder unit driven by an electric motor (8), for hydraulic adjustment of a brake piston of at least one wheel brake, and with at least one electromechanically actuatable wheel brake (H-EMB1, H-EMB2) for electrical adjustment of a brake piston (20) of the wheel brake, an electric motor (8) and a first gearbox (15), which transmits the driving force of the electric motor (8) to a further gearbox (16, 20, 24), being provided for the electromechanical actuation of the wheel brake, characterised in that the electromechanically actuatable wheel brake (H-EMB1, H-EMB2) has a hydraulic control device having a piston-cylinder unit, the control piston (19) of which serves for adjusting the brake piston (20) and/or exerting a force (Fa) on the brake piston (20), wherein by means of a pressure supply device (DV) the control piston (19) can be adjusted or a force can be exerted on the control piston (19).

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

The invention relates to a brake system (2) comprising a piston-cylinder unit (4) which is designed to supply a pressure medium to at least one brake circuit (BK1, BK2), a first pressure supply unit (6), an electromotive drive (8) which is designed to supply the pressure medium to the at least one brake circuit (BK1, BK2), a motor pump unit (12) which is designed to supply the pressure medium to the at least one brake circuit (BK1, BK2), and a second pressure supply unit (14) which is designed to supply the pressure medium to the at least one brake circuit (BK1, BK2). According to the first invention, the second pressure supply unit (14) is designed separately from the piston-cylinder unit (4). According to the second invention, one piston (16) of the piston-cylinder unit (4) and one piston (24) of the second pressure supply unit are mechanically connected together, and valves (TV1, TV2) are arranged in the hydraulic lines (HL1, HL2) between the piston-cylinder unit (4) and the motor pump unit (12). According to another invention, two housings are mechanically connected together, wherein one housing has at least one cylinder piston unit, and the other housing has at least one pressure supply unit.

IPC Classes  ?

• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The invention relates to a brake system for a motor vehicle, comprising an actuating device, in particular a brake pedal (1), a pressure supply device (DV), in particular a hydraulic piston-cylinder unit driven by an electric motor driven (8), for hydraulically adjusting a brake piston of at least one wheel brake, wherein the pressure supply device (DV) works in particular on wheel brakes (RBV1, RBV2) of the front axle of the motor vehicle, and having at least one electromechanically actuatable wheel brake (RBH1, RBH2) for electrically adjusting a brake piston (20) of the wheel brake, in particular for the rear wheels of the motor vehicle. For electro mechanically actuating the wheel brake, an electric motor (48, figs 6, 7) and a first transmission (15), which transmits the driving force of the motor to a further transmission, in particular a ball-thread transmission (KGT), are provided. The invention is characterized in that one or more (hydraulic and/or electric) components or subsystems of the brake system are designed to be redundant at least once.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 13/66 - Electrical control in fluid-pressure brake systems

Abstract

An actuation system for at least one hydraulically actuatable device, e.g., a vehicle brake, may include an actuation device, e.g., a brake pedal, at least one first pressure source that can be actuated using the actuation device, and a second pressure source having a pressure-generating arrangement that is moveable in two directions, and which includes an electro-mechanical drive for the pressure-generating arrangement. Each pressure source is connected via at least one hydraulic line to the hydraulically actuatable device for supplying pressurising medium. A valve device may regulate pressure of the hydraulically actuatable device. Pressurising medium can be supplied in a controlled manner in both movement directions of the pressure-generating arrangement. Provision is made for two working chambers of the second pressure source to be connected by a hydraulic line, and a valve device may be arranged in the hydraulic line.

IPC Classes  ?

• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force

Abstract

A diagnostic method, in particular to determine the leak tightness of at least one seal and/or one valve, for at least one component of a vehicle, wherein a piston cylinder unit, whose piston is driven by an electromotive drive, forms a pressure supply unit, wherein a control unit identifies the piston position and/or piston movement of the piston by means of at least one sensor and the pressure generated by the pressure supply unit or the motor current flowing through the drive by means of at least one sensor. During the diagnostic method, the control unit may be used to measure quantities relating to piston movement/position, pressure, and/or pressure variation.

IPC Classes  ?

• B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system

Abstract

The first inventions relate to a piston-cylinder unit (2, 42, 72) comprising a piston (1, 41, 71) which delimits at least one working chamber (3, 43, 86, 87), wherein a first seal (9, 49, 79) for sealing at least one first working chamber (3, 43, 86, 87) is sealingly arranged either between the piston (1, 41, 71) and cylinder (23, 42, 72) or between a plunger (88) connected to the piston (71) and the cylinder (23, 42, 72), and that a second seal (9a, 49a, 80, 83) is arranged between the first seal (9, 49, 79) and the first working chamber (3, 43, 86, 87), and the piston-cylinder unit (2, 42, 72) comprises a first channel (10, 46, 78, 81, 81a) which is arranged in the wall of the cylinder (23, 42, 72) or in the piston (1, 41, 71) and joins between the first seal (9) and the second seal (9a), in particular in the inner chamber of the cylinder, such that the first channel (10) and/or a hydraulic line (11, 51, 76) connected thereto has a throttle device (12) and/or a valve device, and that an electronic control and regulating device (ECU) comprises a diagnosis or monitoring function in order to diagnose or monitor a possible defect or failure of a seal. The present application comprises, similar to other inventions, a number of hydraulic devices having a piston-cylinder unit and a control and regulating device having a diagnosis or monitoring function.

IPC Classes  ?

• B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
• B60T 8/38 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including valve means of the relay or driver controlled type
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 11/232 - Recuperation valves
• B60T 11/236 - Piston sealing arrangements

Abstract

An actuation device for a hydraulic actuation system, e.g., a motor vehicle brake or an electrified clutch actuator, may include a connection for an actuation device; a pressure supply device, driven by an electromotor drive, in the form of a piston or double-stroke piston pump; a piston cylinder unit that may be actuated by means of the actuation device; and an electronic control unit. An axis of the piston cylinder unit and an axis of the pressure supply device may be arranged in parallel.

IPC Classes  ?

• B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
• B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
• B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor
• F16D 121/04 - Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
• F16D 121/24 - Electric or magnetic using motors

Abstract

The invention relates to a brake device and a method for operating a brake device, wherein said brake device comprises an actuation device, also a booster device, in particular having an electro-hydraulic drive, a piston cylinder device (main cylinder) in order to supply hydraulic pressure medium to the brake circuits, a valve device for controlling or regulating the supply of the pressure medium and an electronic control or regulating device. According to the invention provision is made for additional pressure medium volume to be supplied in a controlled manner to at least one brake circuit by means of a further piston cylinder device, in particular a double stroke piston and at least one valve controlled by the control or regulating device.

IPC Classes  ?

• B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
• B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
• B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive

Abstract

1-41-4) for at least two hydraulic consumers of the hydraulic actuating system, in particular wheel brakes (RB) of an axle of a vehicle, an ECU (S-ECU), in particular with engine control electronics for a BLDC motor, valve output stages and sensors, for actuating the at least one solenoid valve and the electric motor drive (M), in order to regulate a pressure in the hydraulic actuating system, wherein the main module (MO) is either electrically connected or is electrically and hydraulically connected to at least one further system component or actuating unit (BE), in particular an electrically or hydraulically operating travel simulator with an actuating pedal and/or a central computer (M-ECU).

IPC Classes  ?

• B60T 13/66 - Electrical control in fluid-pressure brake systems
• B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
• B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor