A fuel injector provided with: an injection valve comprising an injection nozzle; a mobile needle for regulating the fuel flow through the injection valve and ending with a shutting head, which engages a valve seat of the injection valve, is arranged externally with respect to injection valve and presents a predetermined sealing diameter; an actuator for displacing the needle between a closing position and an opening position of the injection valve; a closing spring which tends to maintain the needle in the closing position of the injection valve pushing the shutting head against the valve seat itself in a sense contrary to the feeding sense of the fuel; and a supporting body having a tubular shape and presenting a feeding channel within which a needle is arranged; the needle, at an opposite end of the shutting head, is coupled to a balancing channel, which is at ambient pressure.
F02M 63/00 - Other fuel-injection apparatus having pertinent characteristics not provided for in groups or Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups or
F02M 61/08 - Fuel injectors not provided for in groups or having valves the valves opening in direction of fuel flow
F02M 61/20 - Closing valves mechanically, e.g. arrangements of springs or weights
2.
Method for estimating the crank angle at which 50% of the fuel mass has been burnt in a cylinder of an internal combustion engine with spontaneous mixture ignition
A method for determining the angular speed of a drive shaft of an internal combustion engine at each tooth event of a phonic wheel presenting a number N of teeth includes detecting the angular amplitude for each tooth; detecting the time of each tooth; and determining the raw angular speed of each tooth according to the corresponding angular amplitude and time. For each tooth a compensation value is determined which represents the difference between the actual angular amplitude of the tooth and the theoretic angular amplitude of the tooth; and determining the angular speed of each tooth by correcting the raw angular speed based on the corresponding compensation value.
A method of driving a hydraulic actuator provided with a pressure-controlled proportioning solenoid valve; the method includes the steps of: determining a first open-loop contribution according to a pressurized oil flow rate which crosses the proportioning solenoid valve and according to the desired load pressure inside the actuation chamber; determining a second open-loop contribution according to the desired position of the spool of the proportioning solenoid valve; determining a third closed-loop contribution according to the difference between a desired value of the position of the mobile piston and a real value of the position of the mobile piston; and calculating a desired electric driving current value of the proportioning solenoid valve by means of an algebraic sum of the three contributions.
F15B 9/09 - Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
4.
Method of manufacturing and controlling a butterfly valve for an internal combustion engine
A method of manufacturing and controlling a butterfly valve for an internal combustion engine; the manufacturing and control method includes the steps of: establishing a maximum gaseous flow rate value which may flow through the feeding pipe when the butterfly plate is in the closing position; determining a conventional closing position at which the gaseous flow rate which flows through the feeding pipe is essentially equal to the maximum gaseous flow rate value; driving an actuator device so as not to normally pass the conventional closing position; and dimensioning the position of a catch element, so that when a rotational shaft abuts against the catch element the gaseous flow rate which flows through the feeding pipe is essentially lower than the maximum gaseous flow rate value.
B21K 1/22 - Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
B23Q 17/00 - Arrangements for indicating or measuring on machine tools
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
5.
Hydraulic circuit of a servo-assisted mechanical transmission
A hydraulic circuit of a servo-assisted mechanical transmission, which is provided with a number of hydraulic actuators provided with corresponding actuation chambers adapted to be filled with pressurized oil; the hydraulic circuit is provided with: a number of solenoid valves, each of which is coupled to a corresponding actuation chamber of a hydraulic actuator; a tank, which contains the oil at atmospheric pressure and is provided with an upper loading aperture; the cap, which closes the loading aperture of the tank and is provided with a through venting hole which puts the tank into communication with the external environment; a filtering element, which is coupled to the cap and is arranged under the venting hole; a hydraulic accumulator containing the pressurized oil; and an electric pump which draws from the tank and feeds the hydraulic accumulator.
F16D 31/02 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
F15B 7/06 - Fluid-pressure actuator systems in which the movement produced is definitely related to the output of a volumetric pumpTelemotors Details
6.
Control method for mixture ratio in a multi-cylinder internal combustion engine equipped with at least two lambda sensors placed upstream of a catalytic converter
Control method for the mixture ratio in a multi-cylinder internal combustion engine, the control method providing for the following: reading a first real value of the mixture ratio via a master lambda sensor associated with a first cylinder group, reading a second real value of the mixture ratio via a slave lambda sensor associated with a second cylinder group, calculating a first amount of fuel to inject into the cylinders of the first cylinder group to track a mixture ratio target value by using the first real value of the mixture ratio as a feedback variable, calculating the mean of the second real value of the mixture ratio in the detection window, calculating a correction value for the amount of fuel to inject based on the difference between a target value and the mean of the second real value of the mixture ratio, and calculating a second amount of fuel to inject into the cylinders of the second cylinder group by applying the correction value to the first amount of fuel to inject into the cylinders of the first cylinder group.
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
7.
Method for estimating the crank angle at which 50% of the fuel mass has been burnt in a cylinder of an internal combustion engine with spontaneous mixture ignition
A bracket for transporting and assembling an actuation system of a servo-assisted mechanical gearbox, which actuation system presents a plurality of reciprocally connected assemblies; the bracket presents a first part adapted to support a first assembly of the actuation system and at least a second part, which is adapted to support a second assembly of the actuation system and is movable with respect to the first part.
B62D 65/00 - Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
9.
Method of controlling a hybrid vehicle during regenerative deceleration
Ente Per Le Nuove Tecnologie, L'Energia E L'Ambiente-Enea (Italy)
Magneti Marelli Powertrain S.p.A. (Italy)
Inventor
Puccetti, Angelo
Gaviani, Giovanni Maria
Abstract
A method of controlling a hybrid vehicle during regenerative deceleration, the method including: determining deceleration of the vehicle; upon determining deceleration of the vehicle, operating a reversible electric machine as a generator to regenerate part of the kinetic energy of the vehicle; establishing a respective minimum speed of an internal combustion engine for each gear of a servocontrolled mechanical power train; determining and engaging the highest gear which, combined with the current state of motion of the vehicle, runs the internal combustion engine at higher than the respective minimum speed; keeping the gear engaged as long as the internal combustion engine runs at higher than the respective minimum speed; and downshifting by one gear when the internal combustion engine runs at lower than the respective minimum speed.
B60K 1/02 - Arrangement or mounting of electrical propulsion units comprising more than one electric motor
B60W 10/10 - Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
B60W 20/00 - Control systems specially adapted for hybrid vehicles
B60W 10/06 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
10.
Actuation system for a servo-assisted mechanical transmission with oil leakage recovery
An actuation system for a servo-assisted transmission; the actuation system is provided with: a hydraulic circuit comprising a reservoir containing a control fluid, a hydraulic accumulator containing the pressurized control fluid, and a pump which draws from the reservoir and feeds the hydraulic accumulator; at least a hydraulic actuator comprising at least one actuation chamber and a mobile piston which slides within the actuation chamber; a solenoid valve for connecting the actuation chamber of the hydraulic actuator to the hydraulic accumulator and to the reservoir; and a recirculation circuit, which departs from at least one environment bordering with the actuation chamber of the hydraulic actuator and ends in the reservoir.
F16D 31/02 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
F01B 31/00 - Component parts, details or accessories not provided for in, or of interest apart from, other groups
11.
Method for acquisition and processing of an intake pressure signal in an internal combustion engine without an intake manifold
Method of acquisition and processing of an intake pressure signal in an internal combustion engine without an intake manifold; the internal combustion engine having at least one cylinder that receives fresh air through an intake duct, which is controlled by a butterfly valve and is provided with a pressure sensor connected to an electronic control unit. The acquisition and processing method provides for the following steps: measuring, via the pressure sensor, the instantaneous induction pressure at a plurality of different crank angles distributed over an engine cycle; storing, during each engine cycle, the instantaneous induction pressures in a fast acquisition buffer of the electronic control unit; and determining, at the end of each engine cycle, the mean induction pressure in the engine cycle by calculating a mean of the instantaneous induction pressures previously stored in the fast acquisition buffer of the electronic control unit.
A control method for an internal combustion engine supercharged by means of a turbocharger provided with a turbine and with a compressor; the control method contemplates the steps of: establishing at least one operating limit curve on a Reduced Mass Flow Rate/Compression Ratio map; establishing at least one intervention curve of a wastegate valve which adjusts a bypass pipe of the turbine on a Reduced Mass Flow Rate/Compression Ratio map; establishing at least one intervention curve of a Poff valve which adjusts a bypass pipe of the compressor on a Reduced Mass Flow Rate/Compression Ratio map; using the operating limit curve to limit the pressure target downstream of the compressor used by the engine control; controlling the opening of the wastegate valve if the intervention curve of the wastegate valve is exceeded; and controlling the opening of the Poff valve if the intervention curve of the Poff valve is exceeded.
A method for controlling the overpressure in a fuel-supply system of a common-rail type for an internal-combustion engine provided with a number of cylinders; the method has the steps of: supplying fuel under pressure to a common rail connected to a number of injectors by means of a high-pressure pump; detecting the effective value of the pressure of the fuel within the common rail; comparing the effective value of the pressure of the fuel within the common rail with a safety value; determining a condition of emergency if the effective value of the pressure of the fuel within the common rail is higher than the safety value; and driving, in the case of emergency, the injectors for discharging part of the fuel present in the common rail so as to contain the increase in pressure of the fuel within the common rail.
F02M 69/46 - Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions
A fuel injector provided with: an injection valve comprising an injection nozzle; a mobile needle for regulating the fuel flow through the injection valve and ending with a shutting head, which engages a valve seat of the injection valve, is arranged externally with respect to injection valve and presents a predetermined sealing diameter; an actuator for displacing the needle between a closing position and an opening position of the injection valve; a closing spring which tends to maintain the needle in the closing position of the injection valve pushing the shutting head against the valve seat itself in a sense contrary to the feeding sense of the fuel; and a supporting body having a tubular shape and presenting a feeding channel within which a needle is arranged; the needle, at an opposite end of the shutting head, is coupled to a balancing channel, which is at ambient pressure.
B05B 1/30 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
F02M 51/00 - Fuel-injection apparatus characterised by being operated electrically
F02M 61/08 - Fuel injectors not provided for in groups or having valves the valves opening in direction of fuel flow
15.
Method and system for controlling a vehicle provided with a servo mechanical gear-change
A method and system for controlling a vehicle, according to which it is determined whether the vehicle is on a slope; it is detected whether the internal-combustion engine is turned on; it is detected whether the vehicle is stationary; a parking brake is activated automatically and independently of the action of the driver, by driving a respective servo control if the vehicle is on a slope, if the internal-combustion engine is turned on and if the vehicle is stationary; and the parking brake is disengaged automatically and independently of the action of the driver, by driving the corresponding servo control when the clutch is disengaged by a corresponding servo control for transmitting the torque generated by an internal-combustion engine of the vehicle to the driving wheels.
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
16.
Valve for adjusting the air flow rate in an internal combustion engine
A valve for adjusting the air flow rate in an internal combustion engine; the valve presents: a valve body; a cylindrical tubular pipe obtained within the valve body and in which an air introduction channel is defined; a valve seat obtained along the air introduction channel of the tubular pipe; an actuation system; a shutter, mobile under the bias of the actuation system; and a connection flange, which is integral with a first end of the tubular pipe and presents a plurality of through holes which are crossed in use by corresponding fastening screws for rigidly fixing the valve body; the connection flange is provided with a lower plate and an upper plate, which are reciprocally parallel, facing and distanced and are arranged radially with respect to the cylindrical tubular pipe, and a number of ribs, which reciprocally connect the plates, are arranged perpendicularly to the plates, and are arranged axially with respect to the cylindrical tubular pipe.
A hydraulically servocontrolled transmission for a road vehicle provided with an internal combustion engine; the servocontrolled transmission displays: a servocontrolled mechanical gearbox operated by at least one first hydraulic actuator; a servocontrolled clutch operated by at least one second hydraulic actuator; a hydraulic circuit comprising a hydraulic accumulator, which contains pressurised control fluid which is used by the hydraulic actuators, and a pump, which is directly operated by the internal combustion engine to supply pressurised control fluid to the hydraulic accumulator; a park-lock device operatable to block the rotation of the driving wheels; and a control unit, which, when the internal combustion engine is turned off, uses the remaining pressure of the control fluid within the hydraulic accumulator to bring the servocontrolled mechanical gearbox in a neutral position.
A method for controlling a power assisted propulsion system in a motor vehicle so as to perform a transition from a lower gear to a higher gear without interrupting a driving torque applied to driving wheels; the propulsion system displays an internal combustion engine provided with a drive shaft and a power assisted transmission including: a power assisted mechanical gearbox provided with a primary shaft connectable to the drive shaft and a secondary shaft coupled to a transmission shaft which transmits motion to the driving wheels; a power assisted clutch interposed between the drive shaft and the primary shaft of the gearbox to couple and decouple the drive shaft to the primary shaft of the gearbox; a power assisted brake; and an epicycloidal gear having three rotating elements: a first rotating element coupled to the drive shaft, a second rotating element coupled to the secondary shaft of the gearbox, and a third rotating element coupled to the brake.
An embodiment of a fuel injector comprising: an injection valve provided with a mobile needle for regulating the fuel flow through an injection nozzle; a supporting body having a tubular shaft and displaying a feeding channel which ends with the injection valve; and an electromagnetic actuator comprising a spring which tends to maintain the needle in a closing position and an electromagnet, which comprises a coil arranged outside the supporting body, a fixed magnetic armature arranged within the supporting body, and a keeper which is arranged within the supporting body, is magnetically attracted by the magnetic armature against the bias of the spring, and is mechanically connected to the needle; the coil displaying a toroidal shape having an internal annular surface, which is directly in contact with an external surface of the supporting body without the interposition of any intermediate element.
Described herein is an electronic-injection fuel-supply system for an internal-combustion engine having at least one injector and a fuel pump; the fuel pump is provided with: a variable-volume pumping chamber; a one-way intake valve; a one-way delivery valve; a mobile piston that integrates within it the intake valve and is coupled to the pumping chamber to vary cyclically the volume of the pumping chamber itself; and an actuator device that impresses a reciprocating motion on the piston and has an electromagnetic actuator for actuating the piston during an intake phase and a spring for actuating the piston during a delivery phase.
A shut-off valve of the flow rate of a fuel pump for an internal combustion engine; the shut-off valve is provided with: a tubular cylindrical body, which is closed on top, displays a cylindrical seat, the lower portion of which performs the function of fuel pipe, and comprises a number of radial through holes to allow the introduction of fuel within the cylindrical seat; a lower plate, which is arranged within the tubular cylindrical body and underneath the radial holes and has a central through hole which defines an outlet opening of the fuel; and a cylindrical shutter, which is coupled to the lower plate and is mobile between an open position, in which the outlet opening is in communication with the radial holes, and a closed position, in which the outlet opening is isolated from the radial holes.
F02M 37/00 - Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatusArrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
22.
Fuel injector for a direct injection internal combustion engine
A fuel injector comprising: an injection valve provided with a mobile needle to regulate the fuel flow; an actuator adapted to shift the needle; an injection nozzle; a supporting body having a tubular shape and displaying a feeding channel; a sealing body provided with a valve seat of injection valve and comprising a disc-shaped capping element, which lowerly and fluid-tightly closes the feeding channel and is crossed by the injection nozzle, and a guiding element, which rises from the capping element, has a tubular shape, and accommodates the needle therein; an external fuel guiding channel defined between the feeding channel and the guiding element; a number of through feeding holes obtained in the lower part of the guiding element and leading towards valve seat; and a shutter head having an essentially spherical adjustment zone, which is integral with the needle, externally engages the guiding element.
An acquisition system (1) for detecting the angular position (α) of a gas knob • (2) of a motorcycle; the acquisition system (1) is provided with: a fixed supporting body (3); a mobile element, which is mounted mobile in the supporting body (3); a transmission device (6), mechanically connected to the gas •knob (2) and to the mobile element for transmitting the motion from the gas knob (2) 'to :the mobile element itself; and a main position sensor (10), which is carried by the supporting body (3), is coupled to the mobile element for determining the angular position (α) of the mobile element, and is designed to provide two mutually redundant measurements of the angular position (α) of the mobile element.
F02D 11/02 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by hand, foot, or like operator controlled initiation means
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
A method and system for controlling an internal combustion power train, whereby the values of various operating parameters of the power train are measured by means of a number of sensors, and operation of the engine is monitored by means of at least one control unit, which is physically separate from the engine block and connected to the sensors; at least one pressure sensor is housed in the control unit, is physically separate from the engine block, and determines the intensity of pressure waves generated by the power train; and the control unit determines the value of at least one operating parameter of the power train as a function of the intensity of the pressure waves generated by the power train.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion enginesUnits comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
Described herein is a servo for a gear change provided with a control shaft; the servo has: a first actuator, which displaces the control shaft axially along a central axis thereof and is directly coupled to the control shaft; and a second actuator, which renders a cam engaged by a pin projecting from the control shaft angularly fixed to a fixed frame to cause rotation of the control shaft about its central axis during the axial displacement; a cylindrical tubular element is provided, which is coaxial to the control shaft, receives inside it an end portion of the control shaft, supports the cam, and is pushed axially by the second actuator against the fixed frame.
Described herein is a hydraulic servo for a gear change provided with a control shaft; the servo has: a frame; a first hydraulic actuator, which is carried by the frame and has two first chambers, which are alternatively filled with a pressurized fluid for displacing the control shaft axially in the two directions; two first solenoid valves, which control filling of the two first chambers; a second hydraulic actuator, which is carried by the frame and has at least one second chamber that is filled with a pressurized fluid for rotating the control shaft about its central axis; a second solenoid valve, which controls filling of the second chamber; and a supporting body, which is fixed to the frame, houses the solenoid valves, and has inside it a series of hydraulic circuits, which connect the solenoid valves themselves both to the chambers of the actuators and to a supply of the pressurized fluid.
Device for controlling the speed of a turbosupercharger in an internal-combustion engine comprising: a compressor, a turbine, a wastegate valve; the control device comprising: a calculating unit, which receives at input a set of parameters comprising a pre-set limit speed of rotation of the turbosupercharger, the air pressure measured at input to the compressor, and the mass flow rate of the compressor, and is designed to process the parameters for determining, through a predetermined map that characterizes operation of the compressor, a limit supercharging pressure correlated to the air pressure obtainable at output from the compressor in a condition of rotation of the turbine at a speed substantially equal to the preset limit speed of rotation; a comparison unit designed to verify whether a required objective supercharging pressure satisfies a preset relation with the calculated limit supercharging pressure; and a driving unit, which, in the case where the preset relation is satisfied, is designed to govern the wastegate valve for controlling the speed of the turbine as a function of the limit supercharging pressure so as to limit the speed of rotation of the turbosupercharger to a value substantially equal to the limit speed of rotation.
An internal combustion engine comprising at least one cylinder provided with at least one glow plug adapted to heat a variable volume combustion chamber within the cylinder, and an electronic control unit which in turn comprises an estimation module adapted to estimate the temperature of the glow plug within the combustion chamber and a control module which is adapted to drive the glow plug as a function of the estimated temperature.
A fuel pump for an internal-combustion engine; the fuel pump is provided with: a variable-volume chamber for containing fuel; an intake valve connected to the variable-volume chamber; a delivery valve connected to the variable-volume chamber; and a pumping device for varying the volume of the first variable-volume chamber. The intake valve has a disk provided with a plurality of through supply holes, and a deformable lamina, which is fixed to the disk in a position corresponding to a peripheral edge thereof and is provided with a series of flaps, each of which is coupled to a respective supply hole.
A method for managing the “stop-and-start” mode in a motor vehicle equipped with an internal combustion engine; the method provides for the “stop-and-start” mode to be enabled or disabled as a function of a state of charge (SOC) of a battery of the motor vehicle, as a function of a state of motion of a crankshaft of the internal combustion engine and as a function of the electric power consumed overall by the electrical consumers of the motor vehicle.
A fuel injector provided with an injection jet, an injection valve, the latter having a mobile plunger for regulating the flow of fuel through the injection jet, and an electromagnetic actuator, which is capable of displacing the plunger between a closed position and an open position of the injection valve and has a pair of electromagnets, each having a coil, a fixed magnetic armature, and a mobile armature; on the outer surface of a tubular supporting body of the injector, there are produced two annular slots, in each of which there is wound a corresponding coil of an electromagnet.
B05B 1/30 - Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
F02M 61/20 - Closing valves mechanically, e.g. arrangements of springs or weights
patents
