A method of operating a fuel injection system of an internal combustion engine comprising at least one fuel injector associated with a combustion chamber and coupled to a fuel rail comprising a pressure sensor. The method comprises applying to the injector a drive signal of predetermined length; and a pressure drop analysis, PDA, strategy is operated, by which an injected fuel quantity corresponding to a given injection event is determined from a mapping based on a rail pressure drop corresponding to the given injection event. Rail pressure data are acquired by the pressure sensor during an analysis window encompassing the given injection event. In the method, the rail pressure data are processed in order to cancel predetermined artefacts of known intensity and timing due to the injection system and intervening in the analysis window, whereby corrected pressure data are obtained; and the PDA strategy is operated based on a pressure drop calculated from the corrected rail pressure data.
A bus bar assembly includes a first housing; a first bus bar extending through the first housing; a second bus bar extending through the first housing, the second bus bar including a second housing that defines at least one first receiver configured to engage a fastener; and a sensor assembly mounted to the receiver, the sensor assembly including a current sensor positioned between the first bus bar and the second bus bar. The sensor assembly may not include a magnetic core, and the current sensor may be a coreless sensor configured to detect a current through the bus bar assembly.
G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices
3.
SYSTEMS AND METHODS FOR COOLING MODULE WITH PROGRESSIVE COOLING FINS
A heat sink system includes: a container including a cavity; a housing connecting to the container to cover the cavity, wherein one or more of the container or the housing includes an inlet port, and one or more of the container or the housing includes an outlet port; and a cooling module in the cavity between the container and the housing, the cooling module in a flow of coolant from the inlet port to the outlet port, wherein the cooling module includes: first cooling fins with a first cooling fin geometry, and second cooling fins with a second cooling fin geometry, wherein the first cooling fins are upstream of the second cooling fins along the flow of coolant from the inlet port to the outlet port.
A discrete relay driver circuit that includes a first high side gate drive circuit configured to drive a first high side MOSFET and a second high side gate drive circuit configured to drive a second high side MOSFET. The discrete relay driver circuit also includes a first resistor divider configured to sense voltage from the first high side MOSFET, a second resistor divider configured to sense voltage from the second high side MOSFET, and a first low side gate driver circuit configured to drive a first low side MOSFET. The discrete relay driver circuit also includes a second low side gate driver circuit configured to drive a second low side MOSFET based on a first low side enable signal, and a third low side gate driver circuit configured to drive a third low side MOSFET based on a second low side enable signal.
A method for positive crankcase ventilation diagnosis in an engine system with an engine, an intake duct connected to the engine, a PCV line connecting a crankcase of the engine with the intake duct and a sensor for determining an actual PCV pressure (pact) in the PCV line. The method comprises the steps of:
performing a diagnosis measurement by repeatedly determining at least one input parameter (pint, ne, patm, Q), which is linked to the operation of the engine system, and the actual PCV pressure (pact), to obtain a plurality of data samples for a plurality of sample times (ts);
using a prediction model (M) to determine a predicted PCV pressure (ppre); and
comparing the actual PCV pressure (pact) with the predicted PCV pressure (ppre) to diagnose the PCV line,
wherein a diagnosis of the PCV line is based on a model error (perr).
A method of determining a hydraulic timing of a fuel injector in an internal combustion engine, wherein the injector is coupled to a fuel rail comprising a pressure sensor. The method comprises:
acquiring fuel pressure data, obtained by the pressure sensor, representing fuel pressure in the fuel rail over an acquisition window comprising an injection event of the injector;
determining a slope parameter corresponding to a pressure drop consequential to the injection event, the slope parameter being read from a slope map;
configuring a pressure drop model based on the slope parameter; and
operating a fitting operation wherein the pressure drop model is fitted to the fuel pressure data, and wherein the hydraulic timing is derived from the pressure drop model.
A sound synthesis system and method are provided for an electric or hybrid electric vehicle. The system receives an audio signal from an inverter of the vehicle comprising an analog waveform, a digital waveform, or a parameter. The audio signal from the inverter is synthesized and combined with another audio signal via at least one of combination, superimposition, mixing, multiplication, and adding, and the combined signal is amplified and output as a synthesized audio signal or as a visual display of a waveform of the amplified, combined signal.
A system (100) may include a capacitor (110) for an electronic device (400) of an electric vehicle (300); a main bus bar (130); and a capacitor bus bar (150) configured to connect the capacitor (110) to the main bus bar (130), wherein the capacitor bus bar (150) includes a first portion (153) that is perpendicular to the main bus bar (130), and wherein the capacitor bus bar (150) includes a second portion (154) that extends from the first portion (153), that is perpendicular to the first portion (153), and that is planar with the main bus bar (130).
H01G 4/248 - Terminals the terminals embracing or surrounding the capacitive element, e.g. caps
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
9.
SYSTEMS AND METHODS FOR OPEN GATE DETECTOR FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module including: a first phase switch including one or more first phase power switches; a second phase switch including one or more second phase power switches; and one or more controllers configured to detect a gate open condition of the first phase switch or the second phase switch.
H03K 17/12 - Modifications for increasing the maximum permissible switched current
G01R 31/26 - Testing of individual semiconductor devices
G01R 31/27 - Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects due to surrounding elements
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/18 - Modifications for indicating state of switch
10.
SYSTEMS AND METHODS FOR THREE CHANNEL GALVANIC ISOLATOR FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: an upper phase multi-chip module including: a low-voltage upper phase controller; a high-voltage upper phase A controller; an upper phase A galvanic isolator connecting the low-voltage upper phase controller to the high-voltage upper phase A controller; a high-voltage upper phase B controller; an upper phase B galvanic isolator connecting the low-voltage upper phase controller to the high-voltage upper phase B controller; a high-voltage upper phase C controller; and an upper phase C galvanic isolator connecting the low-voltage upper phase controller to the high-voltage upper phase C controller.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
H03K 17/605 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being bipolar transistors with galvanic isolation between the control circuit and the output circuit
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
11.
SYSTEMS AND METHODS FOR LOW INDUCTANCE PHASE SWITCH FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module including: a first phase switch including one or more first phase power switches on a first side of a substrate; and a second phase switch including one or more second phase power switches on a second side of the substrate opposite to the first side.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H05K 7/14 - Mounting supporting structure in casing or on frame or rack
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
12.
SYSTEMS AND METHODS FOR GALVANIC INTERFACE BOND DETECTION FOR INVERTER FOR ELECTRIC VEHICLE
A system comprises an inverter including a first galvanic isolator separating a low voltage area from a high voltage area, a second galvanic isolator separating the low voltage area from the high voltage area, a first bias network connected to the first galvanic isolator, a second bias network connected to the second galvanic isolator, a first filter connected to the first bias network, a second filter connected to the second bias network, a first amplifier connected to the first filter, a second amplifier connected to the second filter, and an open detector connected to the first amplifier and the second amplifier.
H03K 17/689 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
A system comprises an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a galvanic isolator separating a high voltage area from a low voltage area; a low voltage phase controller in the low voltage area, the low voltage phase controller configured to receive a clock reference signal; and a high voltage phase controller in the high voltage area, the high voltage phase controller configured to align a clock reference signal of the high voltage phase controller with the clock reference signal of the low voltage phase controller.
H03K 17/689 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
H03K 17/785 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling field-effect transistor switches
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H04B 5/00 - Near-field transmission systems, e.g. inductive or capacitive transmission systems
A system comprises an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: an upper phase controller configured to store upper phase data; a lower phase controller configured to store lower phase data; and a data coherence interface providing a communication interface between the upper phase controller and the lower phase controller for data coherence between the stored upper phase data and the stored lower phase data.
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a first power module including: a first connection; a second connection; a first power switch including a first gate terminal, the first power switch configured to control a first flow of current between the first connection and the second connection based on a first signal to the first gate terminal; and a first point-of-use controller configured to provide the first signal to the first gate terminal to control the first power switch.
H03K 17/12 - Modifications for increasing the maximum permissible switched current
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
16.
SYSTEMS AND METHODS FOR DECOUPLING CAPACITOR FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a first decoupling capacitor configured to be connected to a positive connection of the battery and a negative connection of the battery; and a first power module including: a first upper phase switch configured to control a first upper phase flow of current between the positive connection of the battery and a first phase connection of the motor, and a first lower phase switch configured to control a first lower phase flow of current between a negative connection of the battery and the first phase connection of the motor.
H03K 17/16 - Modifications for eliminating interference voltages or currents
B60L 15/00 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train
H02M 1/14 - Arrangements for reducing ripples from DC input or output
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module including: a first substrate including a first conductive layer; a second substrate including a second conductive layer; a power switch between the first substrate and the second substrate; and a flex layer between the first substrate and the second substrate, the flex layer electrically connected to the power switch.
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H01L 23/00 - Details of semiconductor or other solid state devices
18.
SYSTEMS AND METHODS FOR COOLING SYSTEM AND POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A base for an electrical component includes: a body, the body defining: a rim, pin slots, and first engagement slots; contact terminals; and electrical connectors, each of the electrical connectors being positioned within a respective pin slot and including a pin terminal positioned on a first surface of the body; wherein the base is configured to provide an electrical connection between one or more power modules and a substrate.
A method for mounting a fin system in a power module includes: sintering a fin system to a first base substrate, the fin system comprising a plurality of fins attached to and extending away from a base plate; sintering a first power switch component to the first base substrate; sintering a second power switch component to a second base substrate; and soldering a heat dissipation element to the second base substrate.
H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
H02M 3/00 - Conversion of DC power input into DC power output
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
H01L 23/367 - Cooling facilitated by shape of device
H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
20.
SYSTEMS AND METHODS FOR NON-OVERLAP ENFORCEMENT FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter including: a first galvanic interface to separate a first high voltage area from a low voltage area; a first low voltage controller in the low voltage area, the first low voltage controller configured to send a first control signal using the first galvanic interface to a first high voltage controller in the first high voltage area; a second galvanic interface to separate a second high voltage area from the low voltage area; and a second low voltage controller in the low voltage area, the first low voltage controller configured to send a second control signal using the second galvanic interface to a second high voltage controller in the second high voltage area, wherein the second low voltage controller is configured to provide an output latch signal to the first low voltage controller and receive an input latch signal from the first low voltage controller.
H03K 17/18 - Modifications for indicating state of switch
H02M 1/38 - Means for preventing simultaneous conduction of switches
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/689 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
21.
SYSTEMS AND METHODS FOR ADAPTIVE GATE DRIVER FOR INVERTER FOR ELECTRIC VEHICLE
A system comprises: one or more point-of-use controllers configured to: assert a command-on signal to load a first turn-on gate driver profile; control, based on the loaded first turn-on gate driver profile, a gate driver to begin a first phase of a turn-on operation; receive a first power switch signal based on one or more of a detected voltage or a detected current; perform a comparison of the received first power switch signal to a first turn-on threshold value; load a second gate turn-on driver profile when the comparison indicates the first power switch signal is greater than the first turn-on threshold value; and control, based on the loaded second turn-on gate driver profile, the gate driver to end the first phase of the turn-on operation and begin a second phase of the turn-on operation.
A system includes an inverter including: a point-of-use controller for a power module, the point-of-use controller including: a positive voltage connection configured to receive a positive control voltage from a high-voltage controller; a command connection configured to receive a command from the high-voltage controller; a message connection configured to send and receive a message to and from the high-voltage controller; a negative voltage connection configured to receive a positive control voltage from the high-voltage controller; a north gate connection configured to output a north gate control signal to a north group of one or more switches; a south gate connection configured to output a south gate control signal to a south group of one or more switches; a north sense connection configured to connect to a first portion of a sensing trace; and a south sense connection configured to receive a second portion of the sensing trace.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H03K 17/08 - Modifications for protecting switching circuit against overcurrent or overvoltage
H03K 17/14 - Modifications for compensating variations of physical values, e.g. of temperature
H03K 17/16 - Modifications for eliminating interference voltages or currents
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
23.
SYSTEMS AND METHODS FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power to AC power, wherein the inverter includes: a power module including: a first substrate, a second substrate including a source plane and a gate plane separated from the source plane by a full trench, the source plane including a step trench, and the gate plane including an electrical connection through the second substrate to a gate input connection of the power module, a semiconductor die disposed between the first substrate and the second substrate, the step trench formed in a portion of the source plane corresponding to an edge of the semiconductor die, and the semiconductor die including a gate connected to the gate plane, and a sinter element disposed between the semiconductor die and the second substrate to connect the semiconductor die to the second substrate; a battery; and a motor.
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H01L 23/051 - ContainersSeals characterised by the shape the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body another lead being formed by a cover plate parallel to the base plate, e.g. sandwich type
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
24.
SYSTEMS AND METHODS FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A power module includes: a first substrate having an outer surface and an inner surface, the first substrate extending from a first longitudinal end toward a second longitudinal end; a power switch including a semiconductor die, the power switch being coupled to the inner surface of the first substrate; a second substrate having an outer surface and an inner surface, the power switch being coupled to the inner surface of the second substrate, the second substrate extending from a first longitudinal end toward a second longitudinal end, wherein the first longitudinal end of the first substrate is longitudinally offset from the first longitudinal end of the second substrate; a first electrically conductive spacer coupled to inner surface of the first substrate and to the inner surface of the second substrate; and a flex circuit coupled to the power switch.
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
25.
SYSTEMS AND METHODS FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power to AC power, wherein the inverter includes: a power module including: a flex layer including a gate trace providing an electrical connection to a gate input connection of the power module, a first substrate, a second substrate including a source plane, the source plane including a step trench, a semiconductor die disposed between the first substrate and the second substrate, the step trench formed in a portion of the source plane corresponding to at an edge of the semiconductor die, and the semiconductor die including a gate connected to the gate trace, and a sinter element disposed between the semiconductor die and the second substrate to connect the semiconductor die to the second substrate; a battery configured to supply the DC power to the inverter; and a motor configured to receive the AC power from the inverter.
H01L 23/051 - ContainersSeals characterised by the shape the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body another lead being formed by a cover plate parallel to the base plate, e.g. sandwich type
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different main groups of the same subclass of , , , , or
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
H01L 23/14 - Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
A system comprises: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power switch including a drain terminal, a source terminal, and a gate terminal; a gate driver configured to provide a signal to the gate terminal, the gate driver including one or more of a resistive gate driver with variable resistance or a current gate driver with variable current; and one or more controllers configured to detect a voltage from the gate terminal to the source terminal of the power switch, and control the gate driver based on the detected voltage.
H03K 17/16 - Modifications for eliminating interference voltages or currents
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
27.
SYSTEMS AND METHODS FOR MULTIPLE OUTPUT INTEGRATED GATE DRIVER FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module including: a drain tab; a source tab; a first power switch including a first gate terminal configured to control a first flow of current between the drain tab and the source tab; a second power switch including a second gate terminal configured to control a second flow of current between the drain tab and the source tab; and one or more controllers configured to provide a first signal to the first gate terminal and a second signal to the second gate terminal.
H03K 17/12 - Modifications for increasing the maximum permissible switched current
G01R 31/26 - Testing of individual semiconductor devices
G01R 31/27 - Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects due to surrounding elements
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/18 - Modifications for indicating state of switch
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02P 6/00 - Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor positionElectronic commutators therefor
H03K 17/16 - Modifications for eliminating interference voltages or currents
H03K 17/284 - Modifications for introducing a time delay before switching in field-effect transistor switches
28.
SYSTEMS AND METHODS FOR ADAPTIVE DRIVER FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power switch including a drain terminal, a source terminal, and a gate terminal; and one or more controllers configured to: receive one or more signals related to an operation of the power switch, update one or more state definitions based on the received one or more signals, and control a gate control signal to the gate terminal based on the updated one or more state definitions.
H03K 17/0812 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
H03K 17/082 - Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
29.
SYSTEMS AND METHODS FOR OVERCURRENT DETECTION FOR INVERTER FOR ELECTRIC VEHICLE
A system comprises: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power switch including a drain terminal, a source terminal, and a gate terminal; and a controller configured to detect a change in current at the source terminal of the power switch using a complex impedance of a metal trace connected to the source terminal of the power switch, and control a gate control signal to the gate terminal based on the detected change in current.
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: one or more controllers configured to provide a test signal to control a gate leakage detection operation; and a power module including: a phase switch including one or more phase power switches; and a point-of-use controller configured to detect a gate leakage of the phase switch based on the test signal.
H03K 17/12 - Modifications for increasing the maximum permissible switched current
G01R 31/26 - Testing of individual semiconductor devices
G01R 31/27 - Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects due to surrounding elements
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/18 - Modifications for indicating state of switch
A system comprises: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module including a drain terminal and a source terminal; one or more phase switches configured to control a current flow between the drain terminal and the source terminal; and a point-of-use controller including two or more thermal sensors on the point-of-use controller, the point-of-use controller configured to determine a temperature of the one or more phase switches using the two or more thermal sensors.
A system comprises: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power switch including a drain terminal, a source terminal, and a gate terminal; and one or more controllers configured to detect a voltage from the gate terminal to the source terminal of the power switch as a gate-to-source voltage, and control a gate control signal to the gate terminal based on the detected gate-to-source voltage.
H03K 17/081 - Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
33.
SYSTEMS AND METHODS FOR GALVANIC ISOLATION FOR INVERTER FOR ELECTRIC VEHICLE
A system includes an inverter including: a first galvanic isolator separating a low voltage area from a high voltage area, the first galvanic isolator having a first galvanic isolator output path; a second galvanic isolator having a second galvanic isolator output path; an amplifier connected to the first galvanic isolator via the first galvanic isolator output path, and connected to the second galvanic isolator via the second galvanic isolator output path, the amplifier having a first amplifier output path and a second amplifier output path; a comparator connected to the amplifier via the first amplifier output path and the second amplifier output path, the comparator having a first comparator output path and a second comparator output path; and a pulse reshape and envelope detector connected to the comparator via the first comparator output path and the second comparator output path.
H03K 17/689 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
A system includes an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a galvanic interface configured to separate a high voltage area from a low voltage area; a low voltage message manager in the low voltage area; a high voltage message manager in the high voltage area, and configured to communicate with the low voltage message manager; and a point-of-use message manager in the high voltage area, and configured to communicate with the high voltage message manager.
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a galvanic interface configured to separate a high voltage area from a low voltage area, the galvanic interface including a command channel and a message channel; a low voltage controller in the low voltage area, the low voltage controller configured to receive a PWM signal from a PWM controller; and a high voltage controller in the high voltage area, the high voltage controller configured to receive a control signal from the low voltage controller using the command channel of the galvanic interface, and send a switch state signal to the low voltage controller using the command channel of the galvanic interface, wherein the low voltage controller is configured to control the control signal based on the PWM signal and the switch state signal.
H03K 17/16 - Modifications for eliminating interference voltages or currents
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/38 - Means for preventing simultaneous conduction of switches
H03K 17/18 - Modifications for indicating state of switch
H03K 17/689 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
H03K 17/785 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling field-effect transistor switches
36.
SYSTEMS AND METHODS FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A power module includes: a first substrate having an outer surface and an inner surface; a semiconductor die coupled to the inner surface of the first substrate; a second substrate having an outer surface and an inner surface, the semiconductor die being coupled to the inner surface of the second substrate; and a first electrically conductive spacer coupled to inner surface of the first substrate and to the inner surface of the second substrate.
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
37.
SYSTEMS AND METHODS FOR SPACER FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module for an inverter for an electric vehicle, the power module comprising: a first substrate having an outer layer and an inner layer; a first electrically conductive spacer coupled to the inner layer of the first substrate; a first semiconductor die coupled to the first electrically conductive spacer; and a second substrate having an outer layer and an inner layer, the first semiconductor die coupled to the inner layer of the second substrate.
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
38.
SYSTEMS AND METHODS FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A power module includes: a first substrate having an outer surface and an inner surface; a semiconductor die coupled to the inner surface of the first substrate; a second substrate having an outer surface and an inner surface, the semiconductor die being coupled to the inner surface of the second substrate; and a flex circuit coupled to the semiconductor die.
H01L 23/051 - ContainersSeals characterised by the shape the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body another lead being formed by a cover plate parallel to the base plate, e.g. sandwich type
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
39.
SYSTEMS AND METHODS FOR PHASE SWITCH TIMING CONTROLLER FOR INVERTER FOR ELECTRIC VEHICLE
A system comprises an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a galvanic isolator separating a high voltage area from a low voltage area; a low voltage phase controller in the low voltage area, the low voltage phase controller configured to receive a pulse width modulation (PWM) signal from an inverter controller and adjust the received PWM signal based on a feedback signal; and a high voltage phase controller in the high voltage area, the high voltage phase controller configured to receive the adjusted PWM signal from the low voltage phase controller, provide the adjusted PWM signal to a phase switch, and provide the feedback signal based on an on-time measurement of the phase switch.
H03K 17/689 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
H03K 5/05 - Shaping pulses by increasing durationShaping pulses by decreasing duration by the use of clock signals or other time reference signals
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H03K 17/785 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling field-effect transistor switches
H04B 5/00 - Near-field transmission systems, e.g. inductive or capacitive transmission systems
A system comprises: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a point-of-use controller configured to: detect a fault; determine a fault type of the detected fault from among n fault types; determine a fault response group to which the determined fault type belongs from among m fault response groups; encode the determined fault response group; and transmit the encoded fault response group via a communication interface; and a phase controller configured to: receive the encoded fault response group from the point-of-use controller via the communication interface; determine the fault response group; decode the determined fault response group; and output the decoded fault response group.
H02P 29/024 - Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
H03K 17/12 - Modifications for increasing the maximum permissible switched current
G01R 31/26 - Testing of individual semiconductor devices
G01R 31/27 - Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects due to surrounding elements
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/18 - Modifications for indicating state of switch
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H03K 17/10 - Modifications for increasing the maximum permissible switched voltage
41.
SYSTEMS AND METHODS FOR POWER MODULE FOR INVERTER FOR ELECTRIC VEHICLE
A power module includes: a first substrate having an outer surface and an inner surface, the first substrate extending from a first longitudinal end toward a second longitudinal end; a semiconductor die coupled to the inner surface of the first substrate; and a second substrate having an outer surface and an inner surface, the semiconductor die being coupled to the inner surface of the second substrate, the second substrate extending from a first longitudinal end toward a second longitudinal end, wherein the first longitudinal end of the first substrate is longitudinally offset from the first longitudinal end of the second substrate.
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
A system includes a power module, wherein the power module includes a first interlocking feature on a first surface of the power module; and at least one heat sink, wherein the at least one heat sink includes a second interlocking feature on a surface of the at least one heat sink, wherein the surface of the at least one heat sink includes a layer of thermal interface material.
A subassembly for an electrical component includes: a first plate including: a wall, stepped walls extending from opposite sides of the wall, flange elements extending outwardly from the stepped walls, each flange element defining an engagement slot; a first heatsink positioned on the wall between the stepped walls; a second heatsink; a power module between the first heatsink and the second heatsink; and a second plate including: a plate wall extending across the second heatsink, transition walls extending from opposite sides of the plate wall, and prongs extending from the transition walls toward the first plate and substantially perpendicular to an inner surface of the plate wall in contact with the second heatsink, wherein the prongs are aligned with and configured to engage the engagement slots.
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H03K 17/12 - Modifications for increasing the maximum permissible switched current
G01R 31/26 - Testing of individual semiconductor devices
G01R 31/27 - Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects due to surrounding elements
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/18 - Modifications for indicating state of switch
44.
POWER SEMICONDUCTOR PACKAGE WITH DOUBLE-SIDED COOLING AND ONE SIDED LIQUID COOLING
A power module, includes: one or more power switches; a passive heat dissipation element in contact with and facing a first surface of the one or more power switches, the passive heat dissipation element having a first planar surface and a second planar surface; and an active heat dissipation element in contact with and facing a second surface of the one or more power switches, wherein the active heat dissipation element is positioned opposite the passive heat dissipation element relative to the one or more power switches and is in thermal contact with the passive heat dissipation element.
H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 23/367 - Cooling facilitated by shape of device
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
H01L 25/11 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices having separate containers the devices being of a type provided for in subclass
H02M 3/00 - Conversion of DC power input into DC power output
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
45.
POWER SEMICONDUCTOR PACKAGE WITH DOUBLE-SIDED COOLING AND ONE SIDED LIQUID COOLING
A power module includes: a fin housing including a fluid passage; a power switch having an exterior surface; and a fin system comprising a plurality of fins attached to a base plate, the plurality of fins extending from the base plate and away from the exterior surface of the power switch, the fin system being in thermal connection with the exterior surface of the power switch and disposed within the fluid passage.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H02M 3/00 - Conversion of DC power input into DC power output
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
H01L 23/367 - Cooling facilitated by shape of device
H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
46.
SYSTEMS AND METHODS FOR ACTIVE DISCHARGE FOR INVERTER FOR ELECTRIC VEHICLE
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a bulk capacitor; one or more phase switches; and one or more controllers configured to control a gate voltage to the one or more phase switches to discharge the bulk capacitor, wherein the one or more controllers is configured to control the gate voltage based on one or more of a measured temperature of the one or more phase switches or an estimated temperature of the one or more phase switches.
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a first power module, the first power module including: a first substrate including a first conductive layer; a second substrate including a second conductive layer; a power switch between the first conductive layer and the second conductive layer, the power switch including a gate connection, wherein the power switch is configured to selectively electrically connect the first conductive layer to the second conductive layer based on a signal to the gate connection; and a point-of-use controller between the first conductive layer and the second conductive layer, the point-of-use controller configured to provide the signal to the gate connection to control the power switch.
H03K 17/12 - Modifications for increasing the maximum permissible switched current
G01R 31/26 - Testing of individual semiconductor devices
G01R 31/27 - Testing of devices without physical removal from the circuit of which they form part, e.g. compensating for effects due to surrounding elements
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H03K 17/18 - Modifications for indicating state of switch
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
H01L 23/00 - Details of semiconductor or other solid state devices
48.
SYSTEMS AND METHODS FOR AN INTERLOCKING FEATURE ON A POWER MODULE
A system includes a power module, wherein the power module includes an interlocking feature on a first surface of the power module; and at least one heat sink, wherein the surface of the at least one heat sink includes a layer of thermal interface material.
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power switch including a drain terminal, a source terminal, and a gate terminal; and one or more controllers configured to: detect a temperature of the power switch, a rate of change in current of the power switch, and a filtered current of the power switch, and control a pulse width of a gate control signal to the gate terminal based on the detected temperature of the power switch, the detected rate of change in current of the power switch, and the detected filtered current of the power switch.
A system includes: an inverter, wherein the inverter includes: a power module including: a flex layer including a gate trace, a first substrate, a second substrate including a source plane and a gate plane separated from the source plane by a full trench, the source plane including a step trench, and the gate plane including an electrical connection through the gate trace of the flex layer to a gate input connection of the power module, a semiconductor die disposed between the first substrate and the second substrate, the step trench formed in a portion of the source plane corresponding to at an edge of the semiconductor die, and the semiconductor die including a gate connected to the gate plane, and a sinter element disposed between the semiconductor die and the second substrate to connect the semiconductor die to the second substrate; a battery; and a motor.
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in subclass
51.
EVAPORATIVE EMISSIONS CANISTER WITH LAYERED CARBON
An evaporative emissions canister (10) is provided. The canister includes a casing (12) defining an internal volume therein, and an inlet (14) and outlet (16) in fluid communication with the internal volume. The internal volume includes a layer of first adsorbent material (26) and a layer of second adsorbent material (28). The first adsorbent material has a flow restriction that is lower than the flow restriction of the second adsorbent material. A fluid flow path is defined from the inlet through the internal volume of the casing to the outlet. The fluid flow path includes a transition zone (24) of changing cross-sectional area in the direction (F) from the inlet to the outlet. The layer of first adsorbent material (26) is disposed at or directly adjacent to the transition zone (24), and the layer of first adsorbent material (26) is disposed adjacent to and immediately upstream from the layer of second adsorbent material (28) in the direction (F).
F02M 25/08 - Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
52.
FUEL PUMP FOR DIRECT FUEL INJECTION FOR INTERNAL COMBUSTION ENGINES WITH A RETAINING WASHER
A fuel pump for direct fuel injection for internal combustion engines comprising a pump body, a pumping chamber in which a piston (1) is slidably mounted, a spring (3) bearing on the one hand on the pump body and on the other hand at an end (10) of the piston (1) projecting out of the pump body via a retaining washer (6) and means of connection between the retaining washer (6) and the end (10) of the piston (1), the retaining means (7) comprising a circular groove (71) at the end (10) of the piston (1), the pump being characterized in that the retaining means (7) further comprise a clearance (72) made in the retaining washer (6) allowing the end (10) of the piston (1) to pass into the clearance (72), and a notch (73) in the retaining washer (6) housed in the circular groove (71) connected to the clearance (72) by a slot (74) which is narrower than the outer diameter of the piston (1) at the end (10) but wider than the diameter of the bottom of the groove (71).
A pressure regulator unit for regulating the pressure of a high-pressure gaseous fuel stream comprises: a regulator body (12) with a gas passage (13) extending between an inlet section (14) for receiving the gaseous fuel at a high pressure and an outlet section (16). A regulating valve seat (32) surrounds the gas passage and cooperates with a regulating valve element (54). A reciprocally arranged pintle (38) permits actuating the regulating valve element relative to the regulating valve seat. A shut-off valve seat (30) surrounds the passage and cooperates with a shut-off valve element (50) actuatable by the reciprocating pintle. The regulating and shut-off valve seats (30, 32) are axially spaced from each other along the gas passage. The shut-off valve member (50) is moveable on an upstream side of the shut-off valve seat (30) to be biased by high pressure gaseous fuel in its closed position. The regulating valve member (54) is arranged on a downstream side of its respective regulating valve seat (32).
F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
G05D 16/20 - Control of fluid pressure characterised by the use of electric means
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
F16K 15/04 - Check valves with guided rigid valve members shaped as balls
rpp rbb b of the valve bore (11) so that the seat portion (15.2) is out of contact with the inner surface (12), and - a valve member (20) movable with respect to the seat member (15) and engaging the seat surface (15.1) in a closed position to close the valve channel (17). In order to improve the reliability of a relief valve in a fuel pump, the invention provides that a groove portion (15.5) is axially interposed between the seat portion (15.2) and the mounting portion (15.6), which groove portion (15.5) defines a groove (16) extending radially inwards between the seat portion (15.2) and the mounting portion (15.6) so that the groove portion (15.5) is at least partially radially spaced from the inner surface (12) by the groove (16).
According to an aspect of the invention, there is provided a fuel injector (1) of a fuel injection system for delivering gaseous fuel to an internal combustion engine. The fuel injector (1) comprises: an injector nozzle (10) having a valve needle (18) that is movable within a bore (20) of the injector nozzle (10) for controlling delivery of the gaseous fuel to the internal combustion engine; a needle control valve (12) for controlling the movement of the valve needle (18) by controlling the pressure of a control fluid in a control chamber (32) of the needle control valve (12); a first fluid supply network (44) for conveying the control fluid from a first injector inlet (40) to an inlet (29) of the needle control valve (12); a second fluid supply network (46) for conveying the gaseous fuel from a second injector inlet (42) to a delivery chamber (24), defined around the valve needle (18) in the bore (20) of the injector nozzle (10), for injection into the engine; and one or more sealant chambers (60a-e) for sealing respective leakage paths of the second fluid supply network (46), each leakage path extending between respective adjacent bodies (15, 16, 36) of the fuel injector (1) and the respective sealant chamber (60a-e) being defined at interfacing surfaces of those bodies (15, 16, 36) to enclose that leakage path, wherein each sealant chamber (60a-e) is connected to the first fluid supply network (44) such that, in use, each sealant chamber (60a-e) is supplied with the control fluid from the first fluid supply network (44) at a higher pressure than the supply of fuel in the second fluid supply network (46), thereby substantially inhibiting leakage from the second fluid supply network (46) via the respective leakage path.
A fuel pump for the direct-injection of fuel for internal combustion engines comprises a pump body (5), a pump chamber (50) in which a piston (1) is slidably mounted, a spring (3) bearing against the pump body (5) and against one end (10) of the piston (1) that projects out of the pump body (5) via a retaining washer (6) and connecting means (7) connecting the retaining washer (6) and the end (10) of the piston (1). The connecting means (7) comprise a plurality of fingers (70) emanating from a ring (63) of the retaining washer (6) and arranged so that they project towards the central axis (A) of the ring (63), one end (700) of the fingers (70) becoming lodged in a circular groove (71) of the piston (1) and being kept by the spring (3) bearing against a shoulder (710) delimiting the circular groove (71). Method for assembling the pump.
F04B 1/0426 - Arrangements for pressing the pistons against the actuated camArrangements for connecting the pistons to the actuated cam
F04B 1/0439 - Supporting or guiding means for the pistons
F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
F04B 1/053 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
F02M 59/44 - Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups
57.
DIRECT-INJECTION FUEL PUMP FOR INTERNAL COMBUSTION ENGINES
A fuel pump comprises a pump body (2) and a valve (1). The valve (1) comprises a sleeve (11) of substantially tubular shape and extends along an axis of actuation (A) so as to define a housing for a coil (12), a tubular body (10) having the same axis as the sleeve (11) being partially housed inside a bore (20) of the pump body (2). An electromagnetic coil (12) of annular shape is housed in the sleeve (11) and centred on said axis of actuation (A) around the tubular body (10), a coil support (13) holds the coil (12) and is inserted into a first end (111) of the sleeve (11). The valve comprises first sealing means (3) comprising an annular first seal (31) between the coil support (13) and the sleeve (11) bearing, on the one hand, on a sleeve seat (32) presented by the sleeve (11) at the first end (111) and, on the other hand, on a support seat (33) presented by the coil support (13).
An improved an end cap assembly for a fuel pump is provided. The end cap assembly includes first and second brush caps herein that are overmolded onto first and second shunt wires to ensure a fluid-tight seal around the shunt wires without requiring heat staking, sonic welding, or melt flowing the end cap to the shunt wires. The brush caps are cone-shaped and include a snap-fit feature that retains the brush caps in place when the endcap assembly is transported prior to being assembled to a fuel pump body.
r1, r3, r5, r7r1, r3, r5, r7) and an outer radius (r2, r4, r6, r8) and is projecting towards the other contact surface (2.5, 3.1, 10.3, 12.3 - 12.5, 14.1), wherein at least two contact portions (15) of the divided contact surface (3.1, 12.3 - 12.5) are separated by an interposed recess portion (16) that is recessed with respect to the divided contact surface (3.1, 12.3 - 12.5), and the other contact surface is shaped to engage the divided contact surface (3.1, 12.3 - 12.5) while being spaced from each recess portion (16), wherein the fuel injector (1) is a gasoline injector and at least one divided contact surface (3.1, 12.3 - 12.5) comprises two radially spaced contact portions (15) separated by a radially interposed recess portion (16), or the fuel injector (1) is a diesel injector and at least one divided contact surface (3.1, 12.3 - 12.5) comprises two tangentially spaced contact portions (15) separated by a tangentially interposed recess portion (16).
The invention relates to a fuel pump (1) comprising: a pumping chamber (3) with a pumping plunger (4) arranged to reciprocate within the pumping chamber (3); an inlet passage (5) at least indirectly connecting a low-pressure inlet of the fuel pump (1) to the pumping chamber (3), an inlet valve (6) being adapted to selectively enable flow through the inlet passage (5) to the pumping chamber (3); an outlet passage (27) at least indirectly connecting the pumping chamber (3) to a high-pressure outlet (28) of the fuel pump, an outlet valve (50) being adapted to selectively enable flow through the outlet passage (27) to the outlet (28); a relief passage (31) connecting the outlet passage (27), downstream of the outlet valve (50), to the pumping chamber (3), a relief valve (40) being adapted to selectively enable flow through the relief passage (31) to the pumping chamber (3). In order to improve the design of a fuel pump with an integrated relief valve, the invention provides that the fuel pump (1) comprises: a main body (2) defining the inlet passage (5), the pumping chamber (3) and a receptacle (9), which is open towards a distal side (D) and which extends into the main body (2) along an outlet axis (A) towards a proximal side (P) so that the receptacle (9) communicates with the pumping chamber (3); and an outlet module (20) with an outlet-module body (21) in which the outlet valve (50) and the relief valve (40) are received and which defines the outlet passage (27) and the relief passage (31), the outlet-module body (21) being at least partially received in the receptacle (9) and connected to the main body (2) in a fuel-tight manner. The invention also relates to an outlet module for a fuel pump (1).
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
The invention provides a drive assembly for a fuel pump for an internal combustion engine. The drive assembly comprises: a housing (50) and a tappet assembly (10) received within a tappet bore (52) provided in the housing (50). The tappet assembly (10) comprises: a tappet body (12) comprising a cavity (60); a roller assembly (22) housed within the cavity (60), the roller assembly (22) in turn comprising: a pin (24) extending transversely across the cavity (60), through the tappet body (12) and the roller assembly (22); and a roller (28) mounted on the pin (24). At least a first end (24a) of the pin (24) extends laterally beyond the outer diameter (14) of the tappet body (12) and is received in a first axial slot (44a) within the housing (50) such that rotation of the tappet assembly (10) about a longitudinal axis thereof is prevented. The invention also provides a method for assembling such a drive assembly.
A fuel injector (10) for delivering gaseous fuel to an internal combustion engine, the fuel injector (10) comprising: a nozzle body (34) provided with a nozzle bore (34b); a first valve needle (22) received within the nozzle bore (34b) and engageable with a first valve seat (122) to control gaseous fuel delivery through at least one outlet (31) of an injection nozzle (20) at a first injection rate; a first actuator arrangement (14) for controlling movement of the first valve needle (22); a second valve needle (24) which is engageable with a second valve seat (124) to control gaseous fuel delivery through at least one outlet (31) of the injection nozzle (20) at a second injection rate; and a second actuator (12) for controlling movement of the second valve needle (24); wherein the second valve seat (124) is defined by the first valve needle (22), the first valve needle (22) defining an internal flow path for gaseous fuel flow when the second valve needle (24) is lifted from the second valve seat (124) and the first valve needle (22) is lifted from the first valve seat (122).
F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
F02M 61/04 - Fuel injectors not provided for in groups or having valves
F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
F02M 61/20 - Closing valves mechanically, e.g. arrangements of springs or weights
F02D 19/02 - Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
F02D 41/20 - Output circuits, e.g. for controlling currents in command coils
F02D 41/24 - Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
64.
GASOLINE DIRECT INJECTION FUEL PUMP WITH ISOLATED PLUNGER SLEEVE
An improved high-pressure fuel pump (10) for a gasoline direct injection system is provided. The fuel pump (10) includes a pump body (12) defining a low-pressure side, a high-pressure side, and a pumping chamber (26) therebetween. The pump body (12) also defines a central bore (22) and a drain port (56) extending from the central bore (22) to the low-pressure side. A slip-fit sleeve (20) is clamped within the central bore (22), the slip-fit sleeve (20) including upper and lower guide ribs (60,62). A plunger (18) is moveable within the sleeve (20) for compressing fuel within the pumping chamber (26). The plunger (18) and the sleeve (20) define a first diametral clearance, and the guide ribs (60,62) and the central bore (22) define a second diametral clearance. Fuel diverting around the upper guide rib (60) during pumping operations can recirculate through the drain port (56) to the low-pressure side. To accommodate thermal expansion of the sleeve (20), the second diametral clearance is at least 75% of the first diametral clearance.
An injection device (24) for injecting a combined water/gaseous fuel mixture into a combustion space of an engine, the injection device (24) comprising: a first inlet (34) for receiving a supply of water into a water chamber; a second inlet (36) for receiving a supply of gaseous fuel into a flow passage; a mixing device (30) comprising a valve assembly (44,62) which is configured to control the flow of water between the water chamber (44) and the flow passage (46) so as to establish a combined gaseous fuel/water mixture within the flow passage (46); and an injection nozzle (54) including a valve needle (66) which is operable to control the delivery of the combined gaseous fuel/water mixture from the flow passage (46) into the combustion space. The invention also extends to a fuel injection system (10).
According to an aspect of the invention, there is provided an injector nozzle (1) of a fuel injector for an internal combustion engine. The injector nozzle (1) comprises: a valve needle (4); and a nozzle body (2) extending along a longitudinal axis (6) from a tip (8), at a proximal end (10), to an opposing distal end (12) for connection to the fuel injector. The nozzle body (2) is provided with: a bore (14) within which the valve needle (4) is moveable; and a valve seat (16) defined at a proximal end of the bore (14) and transitioning into a sac (25) that defines a sac volume (26). The valve needle (4) is moveable relative to the valve seat (16) to control fuel delivery through a first set of nozzle outlets (27) and a second set of nozzle outlets (28), the first set of nozzle outlets (27) defining a first row of openings (30) in a wall of the sac (25) and the second set of nozzle outlets (28) defining a second row of openings (32) in the sac wall, the first row of openings (30) being arranged distally from the second row of openings (32) along the longitudinal axis (6). The valve needle (4) includes a seat region (52) and a fuel guiding region (54) extending proximally from the seat region (52) such that: in a non-injecting state, the seat region (52) seats against the valve seat (16) and the fuel guiding region (54) extends into the sac volume (26), and, in an injecting state, the seat region (52) is unseated from the valve seat (16) and the fuel guiding region (54) interacts with the bore (14) to guide fuel from the valve seat (16) to at least one of the first and second sets of nozzle outlets (27, 28).
F02M 61/18 - Injection nozzles, e.g. having valve-seats
F02M 61/06 - Fuel injectors not provided for in groups or having valves the valves being furnished at seated ends with pintle- or plug-shaped extensions
An injection nozzle for an internal combustion engine, comprising a nozzle body defining a nozzle body bore, a blind end region of which defines a set of nozzle outlets. An injection valve needle is slidably received in the nozzle body bore and engageable with a seating arrangement to control fuel flow through the set of nozzle outlets; wherein the seating arrangement includes a seating insert received in the nozzle body bore and positioned upstream of the nozzle outlets, the seating insert defining an upper valve seat. The injection valve needle comprises a first seating portion and a second seating portion which are axially spaced along the injection valve needle. The first seating portion is engageable with the upper valve seat defined by the seating insert; and the second seating portion is engageable with a lower valve seat defined by the nozzle body bore. The seating insert defines at least in part a first flow path for fuel to travel from the upper seating surface to the set of nozzle outlets, when the first seating portion is disengaged therefrom to commence a fuel injection event. The injection nozzle according to the invention provides several advantages over the prior art. In particular, the provision of the seating insert as part of the seating arrangement means that the diameter of the upper valve seat can be reduced so that it is almost identical to that of the lower valve seat. This reduces the differential area between the two valve seats thereby reducing the load required to seat the injection valve needle when the fuel pressure is lower than the cylinder pressure. This minimises the required size of the return spring and enables a smaller solenoid to be used to provide the lift to the injection valve needle.
F02M 61/04 - Fuel injectors not provided for in groups or having valves
F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
F02M 61/18 - Injection nozzles, e.g. having valve-seats
An injector and rail assembly for a common rail fuel injection system; the injector and rail assembly comprising a fuel injector comprising a head for receiving fuel and a neck region for supporting the head end, a common rail housing defining a reservoir volume for storing fuel at high pressure and including a stem defining a passage for delivering high pressure fuel from the reservoir volume to the head end of the fuel injector, the stem including a threaded portion, and an adaptable mounting arrangement for sealingly mounting the fuel injector to the stem of the common rail housing. The adaptable mounting arrangement comprises a primary nut mounted on the threaded portion of the stem and an annular seal being located on the stem, the primary nut having an internal channel and the head of the fuel injector being received within the internal channel; and a further nut mounted on the neck of the fuel injector so that a radially outer surface of the further nut engages with the internal channel of the primary nut.
A fuel injector for an internal combustion engine, the fuel injector comprising an injection nozzle comprising a nozzle body provided with a nozzle bore; a valve needle assembly received within the nozzle bore and including a valve needle engageable with a seat region to control fuel delivery through at least one outlet of the injection nozzle; at least a first actuator arrangement operable to apply an opening force to an engagement region of the valve needle assembly to cause an opening movement thereof; wherein the first actuator arrangement comprises a first conductive coil mounted concentrically on a first body and a first armature configured to apply the opening force to the valve needle assembly; and wherein the first body comprises a first, radially inner region having a relatively high magnetic permeability and a second region having a relatively low magnetic permeability, the second region being disposed radially between the first coil and the first, radially inner region.
A method for controlling vehicle energy consumption includes identifying, using a cumulative net energy consumption of a vehicle traversing a route, one or more route segments of the route being traversed by the vehicle. The method also includes determining, for each route segment of the one or more route segments, a vehicle energy consumption profile and determining, for each of the one or more route segments, a profile for a target vehicle speed based on at least one route characteristic and a corresponding vehicle energy consumption profile. The method also includes, for a respective route segment of the one or more route segments generating one or more torque commands based on at least the target vehicle speed profile corresponding to the respective route segment, and selectively controlling, using the one or more torque commands, vehicle propulsion of the vehicle to achieve the target vehicle speed profile.
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60W 10/08 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
B60W 20/12 - Controlling the power contribution of each of the prime movers to meet required power demand using control strategies taking into account route information
A gas supply system comprises a first valve arrangement permitting gas to be supplied from a gas tank to first and second storage chambers configured to accommodate a portion of gas and a portion of compression fluid, and permit gas to be delivered under pressure selectively from the storage chambers. A second valve arrangement permits compression fluid to flow to/from the storage chambers. Compression fluid is delivered to the first and second storage chambers via the second valve arrangement by a hydraulic pump having a primary and secondary drive inputs. Compression fluid is evacuated from the first and second storage chambers via a hydraulic motor having a drive output. The drive output of the hydraulic motor is coupled to the secondary drive input of the hydraulic pump, such that when compression fluid is evacuated from the first or second storage tank through the hydraulic motor, energy is recovered from the compression fluid to drive the hydraulic pump. Beneficially, gas can be supplied from one of the two storage chambers, whilst the other storage chamber is being replenished with gas, whilst the hydraulic motor recovers some of the energy from the hydraulic fluid to assist driving the hydraulic pump.
A fuel injector (10) for delivering gaseous fuel to an internal combustion engine, the fuel injector (10) comprising a nozzle body (14) provided with a nozzle bore (26); a valve needle assembly received within the nozzle bore (26) and including a valve needle (16) engageable with a seat region (42) to control gaseous fuel delivery through at least one outlet (24) of the injection nozzle (12); and at least a first actuator (52) and a second actuator (60), both the first actuator (52) and the second actuator (60) being coupled to a valve needle coupling member (64) which is operable to apply an opening force from the first actuator (52) and the second actuator (60) to an engagement surface (81) of the valve needle assembly to cause an opening movement thereof when the first actuator (52) and the second actuator (60) are actuated. The valve needle coupling member (64) defines a separation distance (D) with the engagement surface (81) of the valve needle assembly so that the valve needle coupling member (64) only impacts the engagement surface (81) when the valve needle coupling member (64) has moved through the separation distance following actuation, and whereby the valve needle coupling member (64) and the engagement surface (81) remains engaged through a full range of movement of the valve needle (16) to a full lift position.
A controller for determining an injection strategy for a fuel injector within a hydrogen fuel injection system within an engine, the controller comprising: an input arranged to receive an engine operating parameter and a pressure signal associated with the pressure of hydrogen fuel available for injection from the injector in the fuel injection system; a processor arranged to determine an injection strategy for the injector in dependence on the received pressure signal and engine control parameter, the determined injection strategy comprising one or more injector control signals to control operation of the fuel injector; an output arranged to output the one or more control signals to the fuel injector.
F02D 19/02 - Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
F02M 21/02 - Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
A fuel vapor storage canister including an integral fuel trap is provided. The fuel trap includes bifurcated chambers with the dual purpose of trapping liquid trace and attenuating noise entering the canister shell and tank line. The upper chamber includes a baffle to block and collect liquid trace, the liquid trace falling through an opening in a partition for collection in a fuel trace collector. The fuel trace collector is suitably positioned within the lower chamber, immediately beneath the opening, and includes a cavity and a venturi. The venturi creates a region of low pressure during purging, which evacuates the cavity by suction. The cavity optionally includes an activated carbon billet, which maintains the pressure level in the fuel vapor line above a predetermined minimum value and which aids in converting the liquid trace to fuel vapor as well as in further attenuating noise escaping into the tank line.
F02M 25/08 - Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
The invention relates to a fuel-rail assembly (1) comprising - an injector (20) having a proximally disposed inlet portion (21) defining an inlet channel (22) and extending along an axial direction (A), - a fuel rail (10) connected to the inlet portion (21) via an outlet portion (31) that defines an outlet channel (32), - a nut element (40) having an inner thread (42) and at least indirectly engaging the outlet portion (31) to transfer an axial clamp force by which a first contact surface (25) of the inlet portion (21) is pressed against a second contact surface (33) of the outlet portion (31) to provide a fluid-tight connection between the inlet channel (22) and the outlet channel (32). In order to enable a wide flow path into an injector while maintaining an easy assembly process of the injector, the invention provides that the fuel-rail assembly (1) comprises an adapter (50) with an axially extending through-opening (51) in which the inlet portion (21) is at least partially received, and with an outer thread (52) that engages the inner thread (42), which adapter (50) at least indirectly presses against the inlet portion (21) to transfer the clamp force. At least one intermediate element (60) is interposed between the adapter (50) and the inlet portion (21), and the adapter (50) indirectly engages the inlet portion (21) via the at least one intermediate element (60).
The invention relates to a method for producing a pintle (20) for a fuel injector (1), which pintle (20) extends in an axial direction (A) and has a pintle perch (20.2) with a perch radius as a maximum radial dimension and a pintle shaft (20.1) with a shaft radius as a maximum radial dimension smaller than the perch radius. In order to provide an efficient method of producing a pintle with a high quality, the invention provides that the method comprises: providing a metal workpiece (25); and performing at least one metal forming operation on the workpiece (25) to change the radial dimension of at least a portion (25.1-25.3) of the workpiece (25). At least one forming operation comprises axially compressing a portion (25.1-25.3) of the workpiece (25), whereby the portion (25.1-25.3) radially expands, wherein expanding the portion (25.1-25-3) is used for creating the pintle perch (20.2).
A system includes a controller for a direct-current (DC) to alternating current (AC) inverter, the controller comprising: a memory configured to store instructions; and at least one processor configured to execute the stored instructions to perform operations including: generating a fault condition Pulse-Width Modulated (PWM) signal to control an active discharge of the inverter in a fault condition by alternately: turning on a first switch group of the inverter while turning off a second switch group of the inverter, and turning on the second switch group of the inverter while turning off the first switch group of the inverter.
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
78.
CONFIGURABLE FAULT AND CONTROL SAFETY ARCHITECTURE FOR INVERTER SYSTEM
A system for a direct-current (DC) to alternating current (AC) inverter includes: a memory configured to store instructions; a main microcontroller configured to execute the stored instructions to control the inverter during non-timing-critical operation; and a safety controller configured to control the inverter during timing- critical operation.
The invention relates to a GDi fuel pump comprising an inlet valve assembly (38) arranged in an inlet passage of the pump housing. The inlet valve assembly (38) comprises a check valve comprising a seat member (50) cooperating with a valve member (54); and an actuator assembly (56) having a needle assembly (60) reciprocally moveable by means of a magnetic field to actuated the valve member (54). The needle assembly (60) includes an actuating needle (62), an armature (66), a washer (68) with a plurality of through holes (74) and an obturating member (70). The obturating member (70) comprises a plurality of flexible blades (86), each blade comprising an obturating pad (86b) configured to be moveable between a rest position, wherein said obturating pad (86b) rests on said washer (68) and closes a respective through hole (74) thereof, and a raised position, raised from said washer (68) when said needle (62) moves away from said check valve. Each obturating pad (86b) comprises a plurality of openings (88), the cumulative cross-sections of the openings in a respective pad representing a fraction of the flow cross-section through the respective hole (74) in the washer (68).
A fuel injector (18) for injecting gaseous fuels into a combustion chamber (4), comprising an injection nozzle (24) including a nozzle cap (36), and an outward opening injection needle (28). The injection nozzle (24) has a longitudinal injector axis (20) and a tip region that is shaped to define a valve seat (32) that extends about a central outlet opening for gaseous fuel. The outward opening injection needle (28) is slidably received in the injection nozzle (24) and is engageable with the valve seat (32) to control a flow of gaseous fuel into a sac volume (38) of the fuel injector (18). The nozzle cap (36) is received over the tip region to define the sac volume (38), and is provided with a plurality of openings (40) to enable the flow of gaseous fuel to pass from the sac volume (38) into the combustion chamber (4) when the injection needle (28) is moved away from the valve seat (32). The plurality of openings (40) comprise at least a first opening and a second set of openings. The first opening is configured to direct a first flow portion of the flow of gaseous fuel into a first zone of the combustion chamber (4), and the second set of openings is configured to direct a second flow portion of the flow of gaseous fuel into a second zone of the combustion chamber (4).
According to an aspect of the invention, there is provided a pump (101) for a fuel injection system. The pump (101) comprises: a main housing (112); a plunger housing (114) arranged to be coupled to the main housing (112); and a gasket (115) for arrangement between respective first and second opposed faces (113, 118) of the main housing (112) and the plunger housing (114), in assembly, so as to seal a compression chamber (116) defined between the main housing (112) and the plunger housing (114) as the gasket is compressed therebetween under an assembly load. The main housing (112) comprises a valve bore (124) extending to the first face (113) of the main housing (112) for supplying fuel to the compression chamber (116), and the plunger housing (114) comprises a plunger bore (140) extending to the opposing second face (118) of the plunger housing (114), defining a central axis of the compression chamber (116). In assembly, a central axis of the valve bore (124) is radially offset from the central axis of the compression chamber (116) such that a stiffness of the main housing (112) varies circumferentially around the compression chamber (116) to define a region of relatively low stiffness proximal to the valve bore (124) and a region of relatively high stiffness distal from the valve bore (124). The gasket (116) comprises a body (150) having: an opening (151) for the compression chamber (116); and an uneven sealing surface (160) that extends around the opening (151) with a height, relative to a base plane (158) of the gasket (116), that varies circumferentially so that, in situ, compression of the sealing surface (160) between the main housing (112) and the plunger housing (114) counteracts the assembly load to reduce the load applied to the low stiffness region of the main housing (112) relative to the load applied to the relatively high stiffness region of the main housing (112).
A fuel injector (4) suitable for gaseous fuels, the fuel injector (4) comprising: an injection nozzle (20) having a tip region that is shaped to define an annular valve seat (34) that extends about a central outlet opening (30); and an outward opening injection valve needle (24) slidably received in the injection nozzle (20), and operable to move between closed and open positions, the outward opening injection valve needle (24) comprising a valve stem (40) that defines a valve axis (V) and a valve head (42) extending from the valve stem (40), wherein the valve head (42) comprises: a circumferential sealing region (44) configured to seal against the valve seat (34) and close the central outlet opening (30) in the closed position and to define an annular gap (46) with the valve seat (34) in the open position, and a circumferential fuel guide region (60) that is located downstream from the circumferential sealing region (44), the circumferential fuel guide region (60) including a first guide portion (62) defining a first guide surface (65) and a second guide portion (64) defining a second guide surface (68), wherein the first guide portion (62) is configured to guide fuel injection at a smaller angle with respect to the valve axis (V) than the second guide portion (64).
F02M 61/12 - Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
F02M 61/08 - Fuel injectors not provided for in groups or having valves the valves opening in direction of fuel flow
In a first aspect of the invention there is provided a fuel pump (1) comprising a valve assembly (30). The valve assembly (30) comprises a valve member (32) defining a valve axis (A), and an electromagnetically controlled armature assembly (48) configured to reciprocate linearly along the valve axis (A) within an armature chamber (54) of the fuel pump (1). The fuel pump (1) further comprises a spring (52) configured to engage a first side (66) of the armature assembly (48) to provide a spring force acting in a first direction along the valve axis (A). The fuel pump (1) further comprises a lift stop (56) provided on a floor surface (58) of the armature chamber (54) and configured to engage a second side (70) of the armature assembly (48) to limit movement of the armature assembly (48) in the first direction. The armature assembly (48) comprises an armature body (60) fixed to an armature carrier (62). The armature carrier (62) is fixed to the valve member (32).
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
The invention relates to a fuel-rail assembly (1) comprising - a fuel rail (10) having an outlet portion (12) made of metal and defining an outlet channel (13), - an injector (20) having an inlet portion (21) made of metal and defining an inlet channel (22) connected in an axial direction (A) to the outlet channel, - clamping means (30, 40, 50) that apply an axial clamp force pressing the injector (20) against the fuel rail (10), wherein the inlet portion (21) comprises a first contact surface (23) pressed against a second contact surface (14) of the outlet portion (12), thereby providing a fluid-tight connection between the inlet channel (22) and the outlet channel (13), one of the first contact surface (23) and the second contact surface (14) being spherical around a center point (C), and the injector (20) comprises a third contact surface (24) pressed against a fourth contact surface (51) of the clamping means (30, 40, 50). In order to provide an adequate high-pressure resistant connection between a fuel injector and a fuel rail, the invention provides that one of the third contact surface (24) and fourth contact surface (51) is spherical around the center point (C).
A method of combusting hydrogen gas in an engine cylinder to initiate a diffusion combustion process, the engine cylinder having a cylinder piston (18) which is driven by means of a crankshaft between bottom dead centre (BDC) and top dead centre (TDC) to perform a compression stroke; the method comprising delivering a pilot injection of hydrogen gas into a combustion chamber (20) during the compression stroke so that the pilot injection of hydrogen pre-mixes with the air and forms an ignitable air/hydrogen gas mixture in the vicinity of an engine cylinder spark plug (24); generating a spark with a spark plug (24) to ignite the ignitable air/hydrogen gas mixture to generate a primary combustion event which results in a fuel burn and a cloud of primary gas (28); and delivering a main injection of hydrogen gas directly into the burning cloud of primary gas (28) so that the main injection of hydrogen gas ignites in the compression stroke to deliver a secondary combustion event.
F02B 23/10 - Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
F02D 41/00 - Electrical control of supply of combustible mixture or its constituents
F02B 19/12 - Engines characterised by precombustion chambers with positive ignition
F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
F02P 15/02 - Arrangements having two or more sparking plugs
F02F 3/26 - Pistons having combustion chamber in piston head
F02B 23/06 - Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
F02D 19/02 - Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
F02B 19/10 - Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
The invention relates to a method of controlling fuel injection in an internal combustion engine having at least one cylinder with an associated fuel injector for performing injector events, wherein for each injector event a drive signal is generated to cause an opening of the fuel injector to spray fuel in accordance with a demand fuel quantity. In a drive mode, the drive signal has a length, PWf, that corresponds to a reference length, PWref, determined from a reference map, MAP-PWref, of demand fuel quantity vs. pulse length, and corrected by a correction value, PWcorr. PWcorr is determined based on a map, MAP-PWcorr, depending on demand fuel quantity, the map MAP-PWcorr being learned during engine runtime and representing a difference between a learned, injector-specific hydraulic open time and a reference hydraulic open time.
The invention provides a method for positive crankcase ventilation diagnosis in an engine system (1) with an engine (2), an intake duct (5) connected to the engine (1), a PCV line (10) connecting a crankcase (4) of the engine (2) with the intake duct (5) and a sensor (12) for determining an actual PCV pressure (pact) in the PCV line. In order to provide reliable, cost-effective means for detecting leakage in a positive crankcase ventilation system, the invention provides that the method comprises the steps of: - performing (115) a diagnosis measurement during a measurement period by repeatedly determining at least one input parameter (pint, ne, patm, Q), which is linked to the operation of the engine system (1), and the actual PCV pressure (pact), to obtain a plurality of data samples for a plurality of sample times (ts); - using a prediction model (M) to determine (125) a predicted PCV pressure (ppre) based on the determined at least one input parameter (pint, ne, patm, Q); and - comparing (155, 165) the actual PCV pressure (pact) with the predicted PCV pressure (ppre) to diagnose (160, 170, 175, 190) the PCV line (10), wherein a diagnosis of the PCV line (10) is based on a model error (perr), which is the difference between the predicted PCV pressure (ppre) and the actual PCV pressure (pact), wherein the model error (perr) being below a lower threshold (plt) is considered (160) to indicate that the PCV line (10) is intact, the model error (perr) being above an upper threshold (put) is considered (170) to indicate that the PCV line (10) is damaged, and the model error (perr) being between the lower threshold (plt) and the upper threshold (put) is considered (175) as an inconclusive result.
A fuel pump includes a plunger which reciprocates within a bore of a housing. The plunger extends from a first end proximal to a pumping chamber to a second end distal from the pumping chamber and includes a sealing ring groove between the first end and the second end. The sealing ring groove extends from an upper shoulder proximal to the first end to a lower shoulder distal from the first end and are separated by a first distance. A sealing ring is located within the sealing ring groove and engages the bore in an interference fit. A diametric clearance greater than (12) microns and less than (30) microns is provided between the plunger and the bore such that the diametric clearance extends between the sealing ring groove and the first end for a second distance which is at least four times the first distance.
The invention relates to a method of operating a fuel injection system of an internal combustion engine comprising at least one fuel injector associated with a combustion chamber and coupled to a fuel rail comprising a pressure sensor. Injection events are performed by applying to said injector a drive signal of predetermined length; and a pressure drop analysis, PDA, strategy is operated, by which an injected fuel quantity corresponding to a given injection event is determined from a mapping based on a rail pressure drop corresponding to said given injection event. Rail pressure data are acquired by said pressure sensor during an analysis window encompassing the given injection event. According to the invention, the rail pressure data are processed in order to cancel predetermined artefacts of known intensity and timing due to the injection system and intervening in the analysis window, whereby corrected pressure data are obtained; and the PDA strategy is operated based on a pressure drop calculated from the corrected rail pressure data.
Injection pump (1) having a pump body (1a) provided with an inlet conduit (11) supplying an inlet chamber (2), a compression chamber (8) downstream from the inlet chamber under which a piston (9) reciprocates to distribute liquid fluid from the compression chamber to an outlet pipe (10) in communication with a common rail circuitry, said injection pump having a valve (3) provided with a resilient cup (31), located between the inlet chamber and the compression chamber and actuated by an electromagnetic actuator through a pushing rod (4) wherein operation of the valve allows the piston to suck liquid fluid from the inlet chamber into the compression chamber and feed the common rail circuitry or to push back liquid fluid in said inlet chamber and said inlet conduit, in which the pump comprises a filter (12) provided around the pushing rod and located between the valve and the electromagnetic actuator in the inlet chamber, said filter being configured to prevent particles travelling in the inlet chamber to reach the electromagnetic actuator.
A fuel system for supplying gaseous fuel to an onboard power plant (10) of a vehicle, the fuel system comprising at least a first tank (12) configured to receive pressurised gaseous fuel for supply to the power plant (10), in use; a source of auxiliary control fluid (46) for supply to the first tank (12); and a valve arrangement (54, 58, 58, 60) which is operable to control the supply of auxiliary control fluid to the first tank (12) so as to control the discharge of the gaseous fuel from the first tank (12); wherein the first tank (12)includes a movable separation element (40, 70) for separating the auxiliary control fluid from the gaseous fuel within the first tank (12).
A fuel system for supplying gaseous fuel to a power plant (10), the fuel system comprising a tank array comprising at least a first tank (12) and a second tank (14) configured to receive pressurised gaseous fuel for supply to the power plant (10), in use, from a filling station (16); a source of auxiliary control fluid (46) for supplying auxiliary control fluid to the tank array when the fuel system is disconnected from the filling station (16); and a pump (48) for pressurising auxiliary control fluid to be supplied to the tank array when control fluid flows through the pump (48) in a forward direction. The fuel system also includes an energy store (80) and a valve arrangement which is operable to control the supply of auxiliary control fluid to the tank array so as to control the discharge of the gaseous fuel from the tank array, the valve arrangement being further operable to enable a reverse direction of flow of auxiliary control fluid from the tank array through the pump (48) when the fuel system is connected to the filling station (16), in use, to generate energy from the pump (48) to store in the energy store (80).
A fuel system for supplying gaseous fuel to a power plant, the fuel system comprising a tank array comprising at least first and second tanks (12, 14), each tank being configured to receive pressurised gaseous fuel for supply to the power plant; and an auxiliary control fluid delivery system. The auxiliary control fluid delivery system comprises a reservoir (46) of auxiliary control fluid; an auxiliary control fluid pipeline (50, 52), configured to enable supply of the auxiliary control fluid to the tank array so as to cause discharge of the gaseous fuel held in the tank array (12, 14) and to enable return of the auxiliary control fluid from the tank array; and a valve arrangement (54, 56, 58, 60) which is operable to control the supply and return of auxiliary control fluid to and from the tank array (12, 14), respectively, so as to control the discharge of the gaseous fuel. The valve arrangement comprises a control valve arrangement (64) operable to close the reservoir (46) of auxiliary control fluid from the auxiliary control fluid pipeline (50, 52) to enable transfer of the auxiliary control fluid between the first and second tanks (12, 14), without re-entering the reservoir (46). Each of the first and second tanks (12, 14) includes a separation element (40, 42) to separate the auxiliary control fluid from the gaseous fuel within the respective tank.
A method of determining a hydraulic timing of a fuel injector in an internal combustion engine is proposed, wherein the injector is coupled to a fuel rail comprising a pressure sensor. The method comprises: • - acquiring fuel pressure data, obtained by the pressure sensor, representing fuel pressure in the fuel rail over an acquisition window comprising an injection event of the injector; • - determining a slope parameter corresponding to a pressure drop consequential to the injection event, the slope parameter being read from a slope map; • - configuring a pressure drop model based on the slope parameter; and • - operating a fitting operation wherein the pressure drop model is fitted to the fuel pressure data, and wherein the hydraulic timing is derived from the pressure drop model.
A director plate retainer (30) of a fluid injector (10) includes an outer wall (30a) which is annular in shape and which extends from an outer wall first end (30b) to an outer wall second end (30c) and which is centered about an axis (26). The director plate retainer (30) also includes a lateral wall (30d) which is annular in shape and which extends toward the axis from a radially outer extent, which is proximal to the outer wall (30a), to a radially inner extent, which is distal from the outer wall (30a). The director plate retainer (30) also includes an inner wall (30g) which is annular in shape and which extends from an inner wall first end (30h), which is proximal to the lateral wall (30d), to an inner wall second end (30i), which is distal from the lateral wall (30d), the inner wall (30g) extending along the axis in a direction that is opposite from the outer wall (30a). The invention also extends to a fluid injector (10) comprising s director plate (24) and a director plate retainer (30).
A system includes a controller for a DC to AC inverter including a processor configured to execute instructions to perform operations including: generating a first pulse for a first phase of a center-aligned PWM signal to alternately activate a first phase switch of a first switch group of the inverter for a first duration and a first phase switch of a second switch group of the inverter for a second duration within a period of the PWM signal; and generating a second pulse for a second phase of the PWM signal to alternately activate a second phase switch of the first switch group of the inverter for a third duration and a second phase switch of the second switch group of the inverter for a fourth duration within the period of the PWM signal, wherein the second duration is different from the third duration during a stall condition.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
H02P 29/68 - Controlling or determining the temperature of the motor or of the drive based on the temperature of a drive component or a semiconductor component
According to an aspect of the invention, there is provided a roller tappet assembly (116) for a reciprocating pump (1). The roller tappet assembly (116) comprises: a tappet body (118); a pin element (120; 220) comprising: first and second opposing end portions (170, 172; 270, 272) that engage respective formations (174, 176) in the tappet body (118) to retain the pin element (120; 220), and a bearing portion (178; 278), extending between the first and second end portions (170, 172; 270, 272), for supporting a cam rider arrangement (122); and said cam rider arrangement (122) supported on the bearing portion (178; 278) of the pin element (120; 220) so that, in use, the reciprocating pump (1) is cyclically loaded and unloaded as an outer surface (158) of the cam rider arrangement (122) interfaces with a rotating camshaft (10). At least one of: the bearing portion (178; 278) of the pin element (120; 220); and/or an inner surface (146) of the cam rider arrangement (122); comprises one or more recessed formations (180a-b) for supporting hydrodynamic lubrication between the cam rider arrangement (122) and the pin element (120; 220) as the bearing portion (178; 278) bends during the loading cycle.
F02M 59/10 - Pumps specially adapted for fuel-injection and not provided for in groups of reciprocating-piston type characterised by the piston drive
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
A fuel pump comprises a housing (14) with a pumping chamber (20), an outlet passage (22) and a pumping plunger (30) which is reciprocally arranged within a plunger bore. A pressure relief valve assembly (12) is arranged in a pressure relief passage (32) and includes: a seat member (40) comprising a through bore (50) extending from a first side (52) to an opposite, second side (54) of said seat member, and an annular seat (56) in said second side (54) that surrounds said bore (50), wherein said seat member is arranged in said pressure relief passage with said first side (52) exposed to high pressure; a needle (42) having an elongate shaft (42.1) with a needle head (42.2), which extends through bore (50), the needle head being proximal the seat member and having an annular seat surface (42.4) adapted to cooperate with the annular seat (56) to close the through bore (50) in a closed position; a spring element (44) arranged to exert a closing force on the needle (42) such that it is biased in closed position, the spring element resting against a stop member (46) rigidly linked with the needle (42).
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
A valve assembly for a fuel pump for a fuel system, the fuel pump comprising a pump chamber and the valve assembly comprising a solenoid winding; and an electromagnetically controlled armature operable under the influence of an electromagnetic field generated by applying a current to the solenoid winding. The armature is coupled to a valve member which is cooperable with a valve seat to control fuel flow into and out of the pump chamber, and wherein the armature is movable within an armature bore and is exposed to fuel within an armature chamber defined within the armature bore, the valve assembly including a clearance defined between the armature and the armature bore which defines a variable restriction to the fuel flow, whereby during armature movement in use the fuel is displaced from the armature chamber through the variable restriction so that the speed of movement of the armature is reduced as the armature moves further into the armature chamber.
F02M 59/36 - Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages
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
A fuel pump (18) comprising a fuel pump housing (28) with a pumping chamber (38) defined therein and an inlet valve bore (28a) extending along an inlet valve bore axis (28b) to an exterior of said fuel pump housing (28). A pumping plunger (34) reciprocates within a plunger bore such that an intake stroke of said pumping plunger (34) increases volume of said pumping chamber (38) and a compression stroke of said pumping plunger (34) decreases volume of said pumping chamber (38). An inlet valve assembly (40) selectively provides and prevents fluid communication between an inlet (20a) of the fuel pump (18) and the pumping chamber (38). The inlet valve assembly (40) includes an inner housing (82) received within the inlet valve bore (28a) such that an outer periphery of the inner housing (82) is sealed to an inner periphery of the inlet valve bore (28a). An outer housing (94) circumferentially surrounds the inner housing (82). An annular chamber (96) is defined radially between the inner housing (82) and the outer housing (94) and axially between the outer housing (94) and the pump housing (28). A sealing ring (98) is located within the annular chamber (96) such that the sealing ring (98) is compressed axially against the pump housing (28) and the outer housing (94).
