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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1580. Отображено 100.
12-01-2012 дата публикации

Method for controlling the pressure in a high-pressure fuel reservoir of an internal combustion engine

Номер: US20120006302A1
Автор: Geraud Devos, Marc Merigault
Принадлежит: ROBERT BOSCH GMBH

A method for controlling the pressure in a high-pressure fuel reservoir of an internal combustion engine; fuel from a presupply pump being supplied to a quantity control valve; and the fuel metered by the quantity control valve being transported by a high-pressure pump into the high-pressure fuel reservoir; the pressure in the high-pressure fuel reservoir being controlled by controlling the quantity control valve; and the supply pressure in front of the high-pressure pump also being considered in the control.

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Номер записи: 1
29-03-2012 дата публикации

Variable flow fuel transfer pump system and method

Номер: US20120073545A1
Автор: David P. Genter, Edward N. LINEN, Gregory S. FRANKS, James L. Walls, Joseph A. WORTHINGTON, Michael F. MATTERN, Norman C. Blizard, Thomas O. Hahn
Принадлежит: Cummins Intellectual Property Inc

A fuel supply system and method of controlling fuel flow through a supply system is provided including a variable flow, i.e. speed, electric fuel transfer pump and a control system adapted to variably control the transfer pump based on fuel demand of the engine. The system provides improved transient response by providing the transfer pump with a feed forward speed/flow command based on engine fueling demand determined based on engine operating conditions. The transfer pump is controlled based on fuel demand not necessarily achieved yet by the high pressure pump and injectors. Therefore, this system controls the EFTP substantially simultaneously with controlling the high pressure pump and injectors to optimize fuel flow through the entire system ensuring the minimum required fuel flow is passing through the second the fuel filtration system, hence maximizing steady state fuel filtration efficiency, and minimizing surge effects on filtration efficiency.

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Номер записи: 2
25-10-2012 дата публикации

Dual power input fluid pump

Номер: US20120269653A1
Автор: Andrew Kowalski, Jaroslaw Lutoslawski, Richard Muizelaar
Принадлежит: Andrew Kowalski, Jaroslaw Lutoslawski, Richard Muizelaar

A fluid pumping system for a vehicle having an internal combustion engine includes a housing, an electric motor, a controller to control the speed of the electric motor, a planetary gearset including a first member adapted to be driven by the internal combustion engine, a second member driven by the electric motor and a third member. A pump is driven by the third member of the planetary gearset. The housing contains the electric motor, the pump and the controller.

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Номер записи: 3
04-04-2013 дата публикации

Remote, Bidirectional Communication with an Engine Control Unit

Номер: US20130085652A1
Автор: Jerry McGuffin
Принадлежит: Individual

A remote computing device communicates bi-directionally with an on-board computing device disposed in a combustion engine vehicle, wherein the on-board computing device controls a fuel pump of the vehicle. The remote computing device queries for and receives data about the vehicle from the on-board computing device, such as the Vehicle Identification Number, diagnostic information about the vehicle, and/or data about how the vehicle is being driven.

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Номер записи: 4
06-06-2013 дата публикации

Low pressure fuel pump control method of gdi engine

Номер: US20130144507A1
Автор: Bum Ky Lee
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A low pressure fuel pump controlling method for a fuel feeding system of a GDI engine that includes a low pressure system and a high pressure system including controlling the low pressure fuel pump against various problems that may occur during the driving of the engine by variable control of the low pressure fuel pump of the low pressure system for the improvement of fuel efficiency of a vehicle. In various situations, the method drives the low pressure fuel pump under a relatively higher pressure than the fuel efficiency pressure.

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Номер записи: 5
26-12-2013 дата публикации

Approach for controlling fuel flow with alternative fuels

Номер: US20130340715A1
Автор: Ross Dykstra Pursifull
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A fuel pump temperature is regulated by selectively directing liquid fuel to an expansion section to evaporate the liquid fuel and create a drop in temperature to thermally cool the fuel pump.

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Номер записи: 6
10-04-2014 дата публикации

FUEL CONTROL SYSTEM AND FUEL CONTROL METHOD OF A GASOLINE DIRECT INJECTION ENGINE

Номер: US20140100759A1
Автор: Jin Yong Wook, Lee Heungseok, Oh Wan Soo
Принадлежит:

A fuel control system and fuel control method of gasoline direct injection engine can improve noise vibration harshness (NVH) by preventing fuel from flowing backward into a low pressure pump by determining whether the ignition of the engine is turned off and maintaining the operation of an inlet valve of a high pressure pump for a predetermined time when the ignition of the engine is determined to be turned off. 1. A fuel control method of a gasoline direct injection engine which injects a fuel pressurized by a high pressure pump into a combustion chamber of the engine directly , comprising:determining whether the ignition of the engine is turned off; andmaintaining operation of an inlet valve of the high pressure pump which operates electronically so as to selectively supplying fuel into the high pressure pump for a predetermined time when the ignition of the engine is turned off.2. The method of claim 1 , wherein the predetermined time is the time that is takes the rotation speed of engine to become 0.3. The method of claim 2 , the maintaining operation of the inlet valve for the predetermined time comprising claim 2 ,maintaining the operation of the inlet valve when the ignition of the engine is turned off;determining whether the rotation speed of the engine becomes 0; andstopping the operation of the inlet valve when the rotation speed of the engine becomes 0.4. The method of claim 1 , wherein the operating speed of the inlet valve for the predetermined time may be reduced to less than the speed of before the ignition of the engine is turned off.5. The method of claim 3 , the maintaining operation of the inlet valve for the predetermined time further comprising claim 3 ,determining whether some conditions such as the rotation speed of the engine is slower than a predetermined value, a pressure of a fuel rail which accommodates high-pressure fuel sent from the high pressure pump and distributes the high-pressure fuel over each injector of the combustion chamber ...

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Номер записи: 7
07-01-2021 дата публикации

FUEL SYSTEM WITH VARIABLE OUTPUT FUEL PUMP

Номер: US20210003091A1
Автор: Talaski Edward J.
Принадлежит:

In at least some implementations, a system includes a pump having an electric motor and a pump outlet, a controller coupled to the pump to vary the power provided to the motor to vary the flow rate of liquid discharged from the pump outlet, a pressure regulator having an inlet communicated with the pump outlet, a regulator outlet from which liquid is discharged from the regulator, a bypass outlet through which liquid is discharged from the regulator, and a pressure responsive valve that opens to permit liquid flow through the bypass outlet, and a flow sensor. The flow sensor is communicated with the bypass outlet to sense or determine a flow rate of liquid at or downstream of the bypass outlet, the flow sensor also communicated with the controller to provide an indication of the bypassed liquid flow rate to the controller. 1. A liquid pumping system , comprising:a pump including an electric motor, and a pump outlet through which liquid is discharged under pressure;a controller coupled to the pump to vary the power provided to the motor to vary the flow rate of liquid discharged from the pump outlet;a pressure regulator having an inlet communicated with the pump outlet, a regulator outlet from which liquid is discharged from the regulator, a bypass outlet through which liquid is discharged from the regulator, and a pressure responsive valve that opens when the pressure of liquid acting on the valve is greater than a threshold pressure to permit liquid flow through the bypass outlet; anda flow sensor communicated with the bypass outlet to sense or determine a flow rate of liquid at or downstream of the bypass outlet, the flow sensor also communicated with the controller to provide an indication of the bypassed liquid flow rate to the controller.2. The system of which also includes a second controller that is communicated with the controller coupled to the pump claim 1 , the second controller providing an indication of the liquid demand in the system to the controller ...

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Номер записи: 8
13-01-2022 дата публикации

Sensorless Control Device for DC Fuel Pump

Номер: US20220010748A1
Автор: Suk Min Yun, Young Sub Jang
Принадлежит: COAVIS

Provided is a sensorless control device for a DC fuel pump that may be downsized as compared to a conventional control device for a DC fuel pump and may implement the same operation at a relatively low cost, and the sensorless control device for a DC fuel pump.

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Номер записи: 9
12-01-2017 дата публикации

DIAGNOSING FAULT IN COMMON RAIL FUEL SYSTEM

Номер: US20170009693A1
Автор: Methil Nandagopal, Puckett Daniel R.
Принадлежит: CATERPILLAR INC.

A method of diagnosing a fault in a common rail fuel system having a proportional-integral-derivative (PID) controller includes determining a first integral output corresponding to a first fuel flow condition and a first rail pressure setting. The method includes comparing the first integral output with a threshold integral output and determining a second integral output corresponding to a second fuel flow condition and the first rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes determining a third integral output corresponding to the first fuel flow condition and a second rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes identifying a failure in at least one of a flow control valve arrangement and a pressure relief valve of the common rail fuel system based on the first, second, and the third integral outputs. 1. A common rail fuel system comprising:a flow control valve arrangement provided upstream to a common rail;a pressure relief valve associated with the common rail; anda proportional-integral-derivative (PID) controller in control communication with the flow control valve arrangement, the PID controller is configured to:determine a first integral output of the PID controller corresponding to a first fuel flow condition and a first rail pressure setting;compare the first integral output with a threshold integral output;determine a second integral output of the PID controller corresponding to a second fuel flow condition and the first rail pressure setting, when the first integral output is greater than the threshold integral output;determine a third integral output corresponding to the first fuel flow condition and a second rail pressure setting, the second rail pressure setting is lower than the first rail pressure setting, when the first integral output is greater than the threshold integral output; anddetect a failure ...

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Номер записи: 10
12-01-2017 дата публикации

SYSTEM FOR CONTROLLING PRESSURE OF FUEL SUPPLIED TO ENGINE

Номер: US20170009696A1
Автор: GE Xinyu
Принадлежит: CATERPILLAR INC.

A system for controlling pressure of fuel supplied to an engine is disclosed. The system includes a pressure sensor to generate signals indicative of pressure of fuel at an outlet of a pressure regulator. The system includes a stepper motor coupled to a gear drive. The system includes a controller, in electric communication with the pressure sensor and the stepper motor, monitors the pressure of the fuel and determines an average pressure of the fuel at the outlet of the pressure regulator for a predefined cycle. The controller compares the determined average pressure with a threshold pressure and generates an output signal when the determined average pressure is beyond the threshold pressure. The controller further communicates the output signal with the stepper motor to preload the pressure regulator and controls the pressure of the fuel at the outlet of the pressure regulator. 1. A system for controlling pressure of fuel supplied to an engine , the system comprising:a pressure sensor configured to generate signals indicative of pressure of fuel at an outlet of a pressure regulator;a stepper motor coupled to a gear drive, the gear drive adapted to transfer rotational movement of a shaft of the stepper motor into linear movement of a plunger of the pressure regulator, wherein the plunger is adapted to move against a biasing force of a biasing member to adjust the preload of the pressure regulator; and monitor the pressure of the fuel at the outlet of the pressure regulator based on the signals generated by the pressure sensor;', 'determine an average pressure of the fuel at the outlet of the pressure regulator for a predefined cycle;', 'compare the determined average pressure of the fuel with a threshold pressure;', 'generate an output signal when the determined average pressure of the fuel is beyond the threshold pressure;', 'communicate the output signal with the stepper motor to adjust the preload of the pressure regulator; and', 'control the pressure of the ...

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Номер записи: 11
14-01-2016 дата публикации

Hydrogen fuel assist device for an internal combustion engine system

Номер: US20160010575A1
Автор: Huan-Hsin Kou
Принадлежит: Individual

A hydrogen fuel assist device for an internal combustion engine includes: a hydrogen gas generator for generating hydrogen gas; a fluid pump capable of pumping the hydrogen gas into a combustion chamber of the internal combustion engine through an air throttle valve, which is connected to the combustion chamber, at varying flow rates; and a pump controller for controlling a rotational speed of the fluid pump in response to opening degree of a fuel throttle valve connected to the combustion chamber so as to adjust the flow rate of the hydrogen gas to be supplied into the combustion chamber during operation of the internal combustion engine.

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Номер записи: 12
14-01-2016 дата публикации

Remote, bidirectional communication with an engine control unit

Номер: US20160010583A1
Автор: Jerry McGuffin
Принадлежит: Individual

A remote computing device communicates bi-directionally with an on-board computing device disposed in a combustion engine vehicle, wherein the on-board computing device controls a fuel pump of the vehicle. The remote computing device queries for and receives data about the vehicle from the on-board computing device, such as the Vehicle Identification Number, diagnostic information about the vehicle, and/or data about how the vehicle is being driven.

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Номер записи: 13
11-01-2018 дата публикации

FUEL SUPPLY DEVICE FOR LPDI ENGINE AND START CONTROL METHOD OF LPDI ENGINE HAVING THE FUEL SUPPLY DEVICE

Номер: US20180010537A1
Автор: Kim Do Wan, LIM Jong Suk, PARK Han Yong, SONG Jin Oh
Принадлежит:

A fuel supply device for a liquefied petroleum direct injection (LPDI) engine in which liquefied petroleum gas (LPG) is directly injected into a combustion chamber and a start control method of an LPDI engine having the fuel supply device, wherein the high pressure fuel pump receives and compresses fuel to a pressure higher than a pressure at which fuel has been supplied, wherein the high pressure fuel rail buffers and supplies fuel to a direct injector that injects fuel directly into a combustion chamber, wherein the return line is connected to the supply line through the high pressure fuel pump to form a low pressure line, allowing a surplus portion of fuel supplied to the high pressure fuel pump from the fuel tank to return to the fuel tank, and wherein a first valve is disposed on the return line to control the flow rate of returning fuel. 1. A fuel supply device for a liquefied petroleum direct injection engine , the fuel supply device comprising:a high pressure fuel pump configured for receiving fuel supplied through a supply line from a fuel tank and configured for compressing the fuel to a pressure higher than a pressure at which the fuel has been supplied;a high pressure fuel rail configured for buffering the fuel compressed by the high pressure fuel pump and supplying buffered fuel to a direct injector that injects the buffered fuel directly into a combustion chamber;a return line connected to the supply line through the high pressure fuel pump to form a low pressure line, the return line allowing a surplus portion of fuel supplied to the high pressure fuel pump from the fuel tank that has not been supplied to the high pressure fuel rail to return to the fuel tank; anda first valve disposed on the return line to control a flow rate of returning fuel.2. The fuel supply device according to claim 1 , further comprising:a low pressure fuel pump pumping fuel from the fuel tank to feed to the high pressure fuel pump through the supply line;a second valve ...

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Номер записи: 14
21-01-2016 дата публикации

Method And System For Delivering A Gaseous Fuel Into The Air Intake System Of An Internal Combustion Engine

Номер: US20160017835A1
Автор: Anderson Stephen C., Garner Gage D.
Принадлежит:

A method and system delivers a cryogenically stored fuel in a gaseous state into the air intake system of a gaseous fuelled internal combustion engine. The method involves measuring the pressure in the vapor space of the cryogenic storage vessel, comparing the measured pressure to a required fuel supply pressure and supplying fuel in gaseous state directly from the vapor space of the cryogenic storage vessel to the fuel delivery line that supplies fuel to the engine, when the pressure measured in the vapor space of the cryogenic storage vessel is equal to or higher than the required fuel supply pressure. The method further involves activating a cryogenic pump to deliver fuel to the internal combustion engine from the liquid space of the cryogenic storage vessel when the measured pressure in the vapor space is lower than the required fuel supply pressure. 1. A method for delivering a fuel in a gaseous state into an air intake system of a gaseous fuelled internal combustion engine , the method comprising:(a) determining a required fuel supply pressure according to an operating condition of said engine;(b) measuring pressure in a vapor space of a storage vessel which stores said fuel;(c) comparing said measured pressure to said required fuel supply pressure; and either of:(d) supplying said fuel in said gaseous state from said vapor space in said storage vessel when said measured pressure is equal to or higher than said required fuel supply pressure; or(e) activating a fuel pump and delivering fuel from a liquid space in said storage vessel when said measured pressure is lower than said required fuel supply pressure.2. The method of claim 1 , wherein determining said required fuel supply pressure comprises first determining a required engine intake pressure as a function of engine operating conditions and then adding to it a predetermined pressure threshold.3. The method of claim 2 , further comprising determining said predetermined pressure threshold as a function of ...

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Номер записи: 15
18-01-2018 дата публикации

APPARATUS AND METHOD FOR PREVENTING OVERFLOW OF FUEL FROM VEHICLE FUEL TANK

Номер: US20180017009A1
Автор: KIM Keun Soo, Lee Seung Kyun, PARK Chang Han, PARK Chang Jun, Park June Young
Принадлежит: HYUNDAI MOTOR COMPANY

An apparatus and a method for preventing overflow of fuel from a vehicle fuel tank are provided may prevent liquid fuel from overflowing into a canister by for a predetermined time storing liquid fuel, which overflows from a fuel tank through a vent valve while the vehicle is traveling, in a fuel overflow prevention chamber, and by returning the fuel in the fuel overflow prevention chamber to the fuel tank by driving a fuel pump in a reverse direction when an engine is turned off. 1. An apparatus for preventing overflow of fuel from a fuel tank , comprising:a fuel overflow prevention chamber configured to store liquid fuel leaking through a vent valve mounted to the fuel tank while a vehicle travels; anda fuel pump driven in a reverse direction for a predetermined time when an engine is turned off, to collect the liquid fuel stored in the fuel overflow prevention chamber.2. The apparatus of claim 1 , wherein the vent valve is connected with a vent line through which fuel evaporation gas generated in the fuel tank flows to a canister claim 1 , and the fuel overflow prevention chamber is connected to a central portion of the vent line to fluidically-communicate therewith.3. The apparatus of claim 1 , wherein a return line is mounted between the fuel overflow prevention chamber and the fuel pump to return the fuel from the fuel overflow prevention chamber to the fuel tank when the fuel pump is driven in the reverse direction.4. The apparatus of claim 3 , wherein a reverse check valve is mounted in the return line to prevent the fuel in the fuel tank from flowing into the fuel overflow prevention chamber when the fuel pump is driven in a forward direction.5. The apparatus of claim 1 , wherein a forward check valve is mounted in a discharge port of the fuel pump to prevent a fuel remaining in a feed line claim 1 , mounted between the fuel pump and the engine claim 1 , from flowing into the fuel tank when the fuel pump is driven in the reverse direction.6. A method of ...

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Номер записи: 16
17-01-2019 дата публикации

CONTROL DEVICE FOR RECOGNIZING FUEL TYPE, A FUEL PUMP CONTROL SYSTEM HAVING THE SAME, AND A METHOD THEREOF

Номер: US20190017458A1
Автор: Ham Chang Ho
Принадлежит:

A control device, a method, and a fuel pump control system are configured to recognize a fuel type. The control device for recognizing the fuel type includes a communication signal reception unit that receives a fuel type communication signal from a vehicle control device, a fuel type information storage unit that stores fuel type information determined at every vehicle start-up, and a fuel type determination unit that determines the fuel type by using the fuel type communication signal or the fuel type information stored in the fuel type information storage unit at and/or before the vehicle start-up.

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Номер записи: 17
17-01-2019 дата публикации

CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20190017461A1
Автор: MUKAIHARA Osamu, TOYOHARA Masahiro, YUFU Shigeyuki
Принадлежит: Hitachi Automotive Systems, Ltd.

Provided is a control apparatus for an internal combustion engine which can achieve required torque and avoid the risk of an accidental fire even in the case where an error occurs in final injection termination timing. A microcomputer calculates T which has been further advanced from T which precedes ignition timing by time required for vaporization of fuel injected into a cylinder of an internal combustion engine. The microcomputer determines whether final injection termination timing (T) comes after T or T. When it has been determined that final injection termination timing (T) comes after T or T, the microcomputer controls an injector or an ignition device so as to secure time for vaporization of the fuel injected into the cylinder of the internal combustion engine while satisfying a fuel injection amount required in one combustion cycle. 1. A control apparatus for an internal combustion engine , comprising:a calculation part which calculates second timing which has been further advanced from first timing which precedes ignition timing by time required for vaporization of fuel injected into a cylinder of an internal combustion engine;a determination part which determines whether final injection termination timing, which indicates timing of termination of final fuel injection in one combustion cycle, comes after the first timing or the second timing; anda first control part which controls an injector or an ignition device so as to secure time for vaporization of the fuel injected into the cylinder of the internal combustion engine while satisfying a fuel injection amount required in the one combustion cycle when it has been determined that the final injection termination timing comes after the first timing or the second timing.2. The control apparatus for an internal combustion engine according to claim 1 , whereinthe first control part advances timing at which initial fuel injection starts in the one combustion cycle when it has been determined that the final ...

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Номер записи: 18
17-01-2019 дата публикации

Fuel supply device

Номер: US20190017474A1
Автор: Norihiro Hayashi, Rui Adachi, Shingo Fukuoka, Tadashi Hazama, Takashi Akiba
Принадлежит: Denso Corp

A fuel supply device configured to supply fuel from an inside of a fuel tank to an internal combustion engine includes: a cover body that is installed to an upper wall of the fuel tank; a pump unit that is placed on a bottom wall of the fuel tank and is configured to discharge the fuel from the inside of the fuel tank toward the internal combustion engine; and a coupling stay that couples between the cover body and the pump unit. The coupling stay includes: an upper stay that extends on a lower side of the cover body; and a lower stay that is installed to the pump unit and is slidably fitted to the upper stay in a top-to-bottom direction. A stress concentrating portion, which reduces a section modulus to concentrate a stress around the stress concentrating portion, is formed at a specific location of the lower stay.

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Номер записи: 19
17-01-2019 дата публикации

FUEL PUMP, FUEL SUPPLY DEVICE, AND FUEL SUPPLY CONTROL SYSTEM

Номер: US20190017475A1
Автор: FUKUOKA Shingo, HIDAKA Yuuji, Nagata Kiyoshi, SAKAI Hiromi
Принадлежит:

A fuel pump has a pump function of sucking fuel in a fuel tank and discharging fuel, and a detection function of detecting a capacitance correlated to a concentration of alcohol in fuel in the fuel tank. The fuel pump includes a pump main body that is received in the fuel tank to perform the pump function, a housing electrode that covers the pump main body in the fuel tank, and an outside electrode that is located outside of the housing electrode in the fuel tank. A gap is formed between the outside electrode and the housing electrode to give the capacitance. 1. A fuel pump that has:a pump function of sucking fuel in a fuel tank and discharging fuel; anda detection function of detecting a capacitance correlated to a concentration of alcohol in fuel in the fuel tank, the fuel pump comprising:a pump main body that is received in the fuel tank to perform the pump function;a housing electrode that covers the pump main body in the fuel tank; andan outside electrode that is located outside of the housing electrode in the fuel tank, wherein a gap is formed between the outside electrode and the housing electrode to give the capacitance.2. The fuel pump according to claim 1 , wherein the housing electrode and the outside electrode are arranged in a double-cylindrical shape in the fuel tank.3. The fuel pump according to claim 1 , further comprising a spacer that separates the housing electrode from the outside electrode to secure the gap.4. The fuel pump according to claim 1 , further comprising a filter casing claim 1 , and a filter element disposed in the filter casing to filter the discharged fuel claim 1 , wherein:the pump main body is held by the filter casing; andthe outside electrode is covered by the filter casing.5. A fuel supply device comprising: a pump function of sucking fuel in a fuel tank and discharging fuel; and', 'a detection function of detecting a capacitance correlated to a concentration of alcohol in fuel in the fuel tank; and, 'a fuel pump that hasa ...

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Номер записи: 20
28-01-2016 дата публикации

CURRENT PULSING CONTROL METHODS FOR LIFT FUEL PUMPS

Номер: US20160025030A1
Автор: Pursifull Ross Dykstra, Ulrey Joseph Norman
Принадлежит:

Methods are provided for controlling a lift fuel pump configured to provide pressurized fuel to a direct injection fuel pump that further pressurizes the fuel to be sent to a plurality of direct injectors. Control strategies are needed that provide reliable and robust operation of the lift fuel pump by selectively providing current to the pump while optimizing energy consumption. To maintain a desired range of lift fuel pump operation, methods are proposed that involve sending current pulses to the lift fuel pump and switching to continuous current when fuel vapor is detected at an inlet of the direct injection fuel pump. 1. A method , comprising:operating a lift fuel pump in a pulsed energy mode for a discrete time duration only upon detection of a threshold fuel volume expelled by a direct injection fuel pump positioned downstream of the lift fuel pump; andswitching operation of the lift fuel pump to a continuous energy mode when vapor pressure is detected at an inlet of the direct injection fuel pump.2. The method of claim 1 , wherein the pulsed energy mode includes sending a series of discrete electrical signals to a power input of the lift fuel pump to initiate operation of the lift fuel pump.3. The method of claim 1 , wherein the continuous mode energy mode includes sending a substantially continuous electrical signal to a power input of the lift fuel pump to initiate operation of the lift fuel pump.4. The method of claim 1 , wherein the discrete time duration is 200 milliseconds and the threshold fuel volume is 3 cubic centimeters.5. The method of claim 1 , further comprising estimating the presence of vapor pressure via a pressure sensor located in a low-pressure fuel passage connecting the lift fuel pump to the direct injection fuel pump.6. The method of claim 1 , further comprising estimating the presence of vapor pressure via timing energy pulsation events and the time in between events.7. The method of claim 1 , wherein the lift fuel pump is an ...

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Номер записи: 21
26-01-2017 дата публикации

APPARATUS FOR PREVENTING JACKRABBIT ACCIDENT USING VEHICLE BLACK BOX

Номер: US20170022925A1
Автор: KIM Il-Wong
Принадлежит:

An apparatus for preventing a jackrabbit accident using a vehicle black box includes a jackrabbit accident prevention unit that is provided in the vehicle black box, synchronizes an accelerator position signal with a vertical synchronization signal for recording of an image to generate first jackrabbit analysis information to be transmitted to an accident record unit, combines the accelerator position signal with a throttle position signal to be transmitted to the accident record unit as second jackrabbit analysis information and to determine jackrabbit based on the second jackrabbit analysis information, and prevents the jackrabbit accident by automatically shutting off driving power to a fuel pump in the jackrabbit state, and the accident recording unit that provides horizontal and vertical synchronization signals for storing of an image to the jackrabbit accident prevention unit, maps the first jackrabbit analysis information with a recorded image, and stores the mapping result in a memory card. 1. An apparatus for preventing a jackrabbit accident using a vehicle black box , the apparatus comprising:a jackrabbit accident prevention unit that is provided in the vehicle black box, synchronizes an accelerator position signal with a vertical synchronization signal for recording of an image to generate first jackrabbit analysis information combines the accelerator position signal with a throttle position signal to generate second jackrabbit analysis information, and prevents the jackrabbit accident by automatically shutting off driving power to a fuel pump when determination of the jackrabbit is made; andan accident recording unit that is provided in the vehicle black box, provides horizontal and vertical synchronization signals for storing of an image to the jackrabbit accident prevention unit, maps the first jackrabbit analysis information provided by the jackrabbit accident prevention unit with a recorded image, and stores the mapping result in a memory card, an ...

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Номер записи: 22
01-02-2018 дата публикации

Method for regulating a fuel feed pump

Номер: US20180030917A1
Автор: BLUDAU Matthias, Graf Rolf
Принадлежит:

A method for operating a fuel feed pump, the fuel feed pump having a pump system and an electrically commutated electric motor, the pump system being drivable by the electric motor, includes: detecting fluctuation in circular motion of the pump system over a rotational speed of the pump system to obtain a value of the fluctuation; standardizing the detected value of the fluctuation to obtain a standardized valise; and in a case in which a predefinable limit is exceeded by the standardized value, limiting a gradient of change in the rotational speed of the pump system. 112-. (canceled)13. A method for operating a fuel feed pump , the fuel feed pump having a pump system and an electrically commutated electric motor , the pump system being drivable by the electric motor , the method comprising:detecting fluctuation in circular motion of the pump system aver a rotational speed of the pump system to obtain a value of the fluctuation;standardizing the detected value of the fluctuation to obtain a standardized value; andin a case in which a predefinable limit is exceeded by the standardized value, limiting a gradient of change m the rotational speed of the pump system.14. The method as claimed in claim 13 , wherein the detecting of the fluctuation in the circular motion of the pump system includes continuously detecting period lengths of the electrical commutation of the electric motor claim 13 , wherein the detected period lengths of the electrical commutation are compared with period lengths of preceding electrical commutations claim 13 , the difference between the compared period lengths being used to form the value for the fluctuation In the circular motion of the pump system.15. The method as claimed in claim 14 , wherein the difference is detected by comparing a detected period length of the electrical commutation with a mean value generated from a multiplicity of preceding period lengths of the electrical commutation.16. The method as claimed in claim 14 , wherein ...

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Номер записи: 23
31-01-2019 дата публикации

Electrical control panel for fueling components

Номер: US20190031495A1
Автор: Donald E. Williamson
Принадлежит: Hill Phoenix Inc

A fuel dispensing system includes a plurality of fuel dispensers, at least one tank configured to store fuel, at least one pump configured to pump the fuel from the tank to at least one of the fuel dispensers, and a fuel panel assembly configured to supply electric power to each of the fuel dispensers. The fuel panel assembly includes a plurality of overcurrent protection breakers, each overcurrent protection breaker provided for one of the fuel dispensers. The fuel panel assembly further includes a plurality of disconnect devices, each disconnect device provided for one of the fuel dispensers. The fuel panel assembly is provided within a single control panel enclosure.

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Номер записи: 24
31-01-2019 дата публикации

SYSTEM AND METHOD FOR STARTING A DIESEL ENGINE

Номер: US20190032581A1
Автор: Kurtz Eric Matthew
Принадлежит:

Methods and systems for starting and stopping a diesel engine are presented. In one example, a cetane enhancer is selectively mixed with diesel fuel to provide a cetane enhanced diesel fuel. A diesel engine may be supplied the cetane enhanced diesel fuel after an engine cold start to improve catalyst light off time and engine emissions. 1. An engine method , comprising:mixing a cetane enhancing fluid with diesel fuel having a first cetane number to provide diesel fuel having a second cetane number;pumping the diesel fuel having the second cetane number to a high pressure fuel pump via a low pressure fuel pump; andinjecting the diesel fuel having the second cetane number to an engine in response to starting the engine when a catalyst temperature is less than a threshold.2. The method of claim 1 , where the cetane enhancing fluid is comprised from one of alkyl nitrates claim 1 , peroxides claim 1 , tetraazoles claim 1 , and thioaldehydes.3. The method of claim 1 , where mixing a cetane enhancing fluid with diesel fuel having a first cetane number includes pumping the cetane enhancing fluid from a cetane enhancer tank and pumping the diesel fuel having the first cetane number from a diesel fuel tank.4. The method of claim 3 , where the mixing the cetane enhancing fluid includes mixing the cetane enhancing fluid and the diesel fuel having a first cetane number via a venturi.5. The method of claim 4 , where the mixing the cetane enhancing fluid includes opening a valve between a venturi and the cetane enhancer tank.6. The method of claim 1 , where the low pressure fuel pump is electrically driven.7. The method of claim 1 , where the high pressure fuel pump is mechanically driven via the engine.8. An engine method claim 1 , comprising:mixing a cetane enhancing fluid with diesel fuel having a first cetane number to provide diesel fuel having a second cetane number and pumping the diesel fuel having the second cetane number to a high pressure fuel pump via a low pressure ...

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Номер записи: 25
09-02-2017 дата публикации

PRESSURE CONTROL BY PHASE CURRENT AND INITIAL ADJUSTMENT AT CAR LINE

Номер: US20170037808A1
Автор: Sausner Andreas, Völker Marc
Принадлежит: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.

A closed loop control system for a fuel pump based on characteristics of speed, pressure, and current. The pressure generated by the pump system is increased at the point in time when the pump system is working against a dead head system (i.e., coasting) to a level that a calibration valve is opened to a determined working point. By measuring the characteristic phase current as a function of the speed, the characteristic is able to be compared, with the pre-calibrated value of the hardware to perform an error compensation algorithm. The error compensation is overlaid with the standard pressure characteristic as a function of speed and phase current, and uses the pre-calibrated opening pressure value (i.e., the inflection point) of the calibration valve and/or in addition the change of the speed to the initial (first calibration), or to a sliding average therefrom. 1. An apparatus , comprising: a motor;', 'a device for generating a pumping action to transfer fluid, the device connected to and powered by the motor; and', 'a valve in fluid communication with the device;', 'wherein the device transfers the fluid at a selected pressure, and the selected pressure is based on the measured current applied to the motor, and the valve opens when the device pumps the fluid at a predetermined pressure, providing a calibration function., 'a pump system having a closed loop function, including2. The apparatus of claim 1 , further comprising:an inlet conduit in fluid communication with the motor, such that the fluid is transferred from the inlet conduit to the device as the motor powers the device;an outlet conduit in fluid communication with the device, such that the fluid flowing into the outlet conduit is pressurized by the device, and the pressure of the fluid in the outlet conduit is controlled by the device; anda secondary conduit in fluid communication with the outlet conduit;wherein the portion of the fluid in the secondary conduit is at substantially the same pressure as ...

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Номер записи: 26
06-02-2020 дата публикации

A Pressure Sensor of a High-Pressure Injection System, Control Device, High-Pressure Injection System, and Motor Vehicle

Номер: US20200040837A1
Автор: CHIA Tet Kong Brian, Kogan Dmitriy
Принадлежит: CPT Group GmbH

Various embodiments include a method comprising: moving a piston toward TDC in successive pump cycles; during the movement, closing an inlet valve by applying current to an electromagnet; generating a pressure signal downstream of the outlet; applying a measurement current to the electromagnet when the inlet valve is closed; while the piston moves away from TDC, detecting an opening position at which an opening movement of the inlet valve begins on the basis of a predetermined change with respect to time of the measurement current; checking whether a value sequence of the ascertained opening positions over multiple pump cycles satisfies a predetermined discrepancy criterion with regard to the sensor signal; and if the discrepancy criterion is satisfied, generating a fault signal relating to the pressure sensor. 1. A method for checking a pressure sensor of a high-pressure injection system of an internal combustion engine of a motor vehicle , the method comprising:moving a piston toward a top dead center within a compression chamber of a high-pressure pump in successive pump cycles during an expulsion phase, expelling a fluid from the compression chamber;during movement of the piston toward top dead center, closing an inlet valve using a control device by applying current to an electromagnet, wherein the expelled fluid generates a fluid pressure downstream of the outlet valve in a high-pressure region;{'b': '35', 'generating a pressure signal using the pressure sensor () is arranged downstream of the outlet valve;'}applying a measurement current to the electromagnet using the control device when the inlet valve is closed;while the piston moves away from top dead center, detecting an opening position of the piston at which an opening movement of the inlet valve begins on the basis of a predetermined change with respect to time of the measurement current;checking whether a value sequence of the ascertained opening positions over multiple pump cycles satisfies a ...

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Номер записи: 27
01-05-2014 дата публикации

Fuel Pump Control Method for Vehicle

Номер: US20140121949A1
Автор: Cheol Hun Cho, Ju Tae Song
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A fuel pump control method can improve acceleration response and operability of a vehicle by allowing a rapid increase in fuel pressure of a low-pressure pump in re-acceleration after fuel cut in a vehicle equipped with a fuel supply system where a low-pressure pump and a high-pressure pump, which are variably controlled, are connected in series.

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Номер записи: 28
14-02-2019 дата публикации

METHOD FOR OPERATING AN ELECTRIC FUEL PUMP

Номер: US20190048821A1
Автор: Joos Klaus, Kuempel Joerg
Принадлежит:

A method is described for operating an electric fuel pump constituting a low-pressure pump in a fuel supply system for an internal combustion engine, having a high-pressure reservoir and a high-pressure pump, of a motor vehicle. The electric fuel pump is operated at least temporarily, during a time period during which the internal combustion engine is switched off during operation of the motor vehicle, with a minimum value for a control application variable for the electric fuel pump. 112.-. (canceled)13. A method for operating an electric fuel pump having a low-pressure pump in a fuel supply system for an internal combustion engine of a motor vehicle , the fuel supply system including a high-pressure reservoir and a high-pressure pump , the method comprising:operating electric fuel pump at least temporarily, during a time period during which the internal combustion engine is switched off during operation of the motor vehicle, with a minimum value for a control application variable for the electric fuel pump.14. The method as recited in claim 13 , wherein the electric fuel pump is operated for the time period at the minimum value only upon exceedance of a threshold value for at least one of a pressure and a temperature in a fuel tank in which the electric fuel pump is disposed.15. The method as recited in claim 14 , further comprising: a temperature outside the motor vehicle,', 'a speed of the motor vehicle,', 'a fill level of the fuel tank,', 'a control application current to the electric fuel pump,', 'a delivery volume of the electric fuel pump,', 'an exhaust gas mass flow,', 'a temperature of the exhaust gas,', 'a detection of a fueling operation,', 'a duration of a most recent complete shutoff of the motor vehicle,', 'a pressure outside the motor vehicle, and', 'a composition of a fuel in the fuel tank., 'ascertaining the at least one of the pressure and the temperature by way of a model and by way of at least one of the following variables16. The method as ...

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Номер записи: 29
13-02-2020 дата публикации

Method and apparatus for correction of pressure wave affected fuel injection

Номер: US20200049098A1
Автор: Andreas Kapp, Leigh Deissenroth
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A fuel injection system ( 1 ) of a combustion engine includes: at least one fuel injection actuator ( 3 ) to inject fuel into a cylinder ( 2 ) of the combustion engine, a high pressure fuel supply system to supply the fuel injection actuators ( 3 ) with fuel, and a control logic device ( 12 ) including an artificial neural network ( 12 A) to calculate pressure correction data (pcd) used to correct pressure waves, PW, generated by at least one actuator of the fuel injection system ( 1 ).

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Номер записи: 30
23-02-2017 дата публикации

Method for operating a dual lift pump system

Номер: US20170051701A1
Автор: Joseph Lyle Thomas, Ross Dykstra Pursifull
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are described for a fuel system in an engine comprising two lift pumps. One example method comprises deactivating one of a first lift pump and a second lift pump if fuel fill level in a common reservoir decreases below a threshold fill level, wherein the first lift pump and the second lift pump are positioned in the common reservoir. By deactivating one of the two lift pumps, the two lift pumps may be protected from degradation due to fuel starvation.

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Номер записи: 31
03-03-2016 дата публикации

FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION SYSTEM

Номер: US20160061139A1
Автор: Imai Keita, ITOH Eiji, NAGATOMO Hiroaki
Принадлежит:

A fuel injection control device is adapted for a fuel injection system including an injector and a high-pressure pump that raises pressure of fuel and supplies the fuel to the injector. The fuel injection control device includes a selecting unit for selecting by which one of full lift injection and partial injection to inject fuel, and a pump control unit for controlling operation of the high-pressure pump such that a pressure of fuel supplied to the injector coincides with a target pressure. The selecting unit selects the partial injection when a required injection quantity of fuel is equal to or smaller than a partial maximum injection quantity. A fuel injection system includes the fuel injection control device, the injector, and the high-pressure pump. 1. A fuel injection control device adapted for a fuel injection system including:an injector that is provided for an internal-combustion engine and includes a valving element and a nozzle hole, the injector configured to open the valving element and to inject fuel through the nozzle hole; anda high-pressure pump configured to raise pressure of fuel and to supply the fuel to the injector, the fuel injection control device comprising:a selecting means for selecting by which one of full lift injection and partial injection to inject fuel, wherein:by the full lift injection, the valving element starts to be opened, and reaches its full lift position, and then starts to be closed; andby the partial injection, the valving element starts to be opened, but does not reach its full lift position, and then starts to be closed; anda pump control means for controlling operation of the high-pressure pump such that a pressure of fuel supplied to the injector coincides with a target pressure, wherein:a maximum injection quantity of fuel when the partial injection is performed at a maximum value of the target pressure that the fuel injection system is capable of taking is referred to as a partial maximum injection quantity of fuel; ...

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Номер записи: 32
02-03-2017 дата публикации

AIR/FUEL MIXTURE CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINES

Номер: US20170058818A1
Автор: Halsmer John Peter
Принадлежит:

A control system for automatically adjusting air/fuel mixture in an internal combustion engine having a mechanical fuel injector system. The automatic air/fuel mixture control system has an electronic control unit which controls the quantity of fuel provided to the combustion chamber in response to sensor inputs in accordance with desired parameters. 1. An air/fuel mixture control system for an internal combustion engine having a fixed orifice fuel injector system , said mixture control system comprising an electronic control unit having a plurality of sensors and operatively connected to control pressure of fuel flowing to each said injector.2. An air/fuel mixture control system as in claim 1 , said mixture control system comprising an electronic control unit having a plurality of sensors and operatively connected to a flow control valve through which fuel flows to said injector claim 1 , said electronic control unit reducing pressure of fuel flowing through said valve.3. The air/fuel mixture control system of wherein said system comprises a pulse width modulated fuel pump in fluid communication with said injector claim 1 , said electronic control unit being operatively connected to said fuel pump to control fuel pressure ouput of said fuel pump.4. The air/fuel mixture control system of wherein said system comprises a fuel bleed valve in fluid communication with a fuel divider providing fuel to a plurality of fuel injectors; said fuel bleed valve being controlled by said electronic control unit to adjust fuel flow to said fuel divider.5. The air/fuel mixture control system of wherein said system comprises a fuel bleed valve in fluid communication between a fuel divider and each one of a plurality of fuel injectors claim 1 , said fuel bleed valves being controlled by said electronic control unit to adjust fuel flow to each of said fuel injectors.6. The air/fuel mixture control system of wherein said system comprises a vacuum bleed valve in fluid communication ...

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Номер записи: 33
02-03-2017 дата публикации

CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

Номер: US20170058819A1
Автор: Murakami Tomoyuki, Nakamura Yoshitatsu
Принадлежит: Hitachi Automotive Systems, Ltd.

The present invention relates to a control device and a control method for an internal combustion engine including a fuel injection valve and an electric fuel pump. In stopping the internal combustion engine, the control device stops driving of the fuel pump and then fuel injection by the fuel injection valve, and increases the total amount of fuel injection by the fuel injection valve after stopping of driving of the fuel pump as the temperature of fuel in stopping the internal combustion engine decreases, thereby reducing a fuel pressure in a stop period. In this manner, fuel leakage from the fuel injection valve in the stop period can be reduced with a simple configuration. 1. A control device for an internal combustion engine including a fuel injection valve and an electric fuel pump that pumps fuel to the fuel injection valve , the control device comprising:an injection control unit that stops driving of the fuel pump and then stops fuel injection by the fuel injection valve in stopping an operation of the internal combustion engine.2. The control device for the internal combustion engine according to claim 1 , wherein the injection control unit increases a total amount of fuel injection by the fuel injection valve after stopping of driving of the fuel pump as a temperature of fuel in stopping the operation of the internal combustion engine decreases.3. The control device for the internal combustion engine according to claim 1 , wherein the injection control unit increases the number of fuel injections by the fuel injection valve after stopping of driving of the fuel pump as a temperature of fuel in stopping the operation of the internal combustion engine decreases.4. The control device for the internal combustion engine according to claim 1 , wherein the injection control unit increases an amount of fuel injection at each injection operation by the fuel injection valve after stopping of driving of the fuel pump as a temperature of fuel in stopping the ...

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Номер записи: 34
20-02-2020 дата публикации

METHOD FOR CONTROLLING A DIGITAL HIGH-PRESSURE PUMP

Номер: US20200056561A1
Автор: CHIA Tet Kong Brian, Girard Nicolas
Принадлежит:

A method for controlling a digital high-pressure pump, the control method including the following consecutive steps when the internal combustion engine does not manage to start during the starting procedure: checking the external parameters of the internal combustion engine; measuring a physical parameter at the high-pressure output, applying an electrical detachment control signal as a replacement for the electrical control signal to the high-pressure pump during the starting procedure when the physical parameter measured at the high-pressure output is less than or equal to a reference value, and stopping the starting procedure after a given time when the physical parameter measured at the high-pressure output is greater than the reference value. 1. A method for controlling a digital high-pressure pump controlled for example by a peak and hold control signal , including a low-pressure input designed to receive a fuel , a high-pressure output designed to deliver pressurized fuel , at least one chamber designed to receive a piston , the piston being able to move and allowing the fuel in the high-pressure pump to be pressurized toward its high-pressure output , a valve including a valve head , the valve being designed to move from a first position to a second position , the second position making it possible to keep the fuel pressurized in order to be delivered into a common rail through its high-pressure output , the high-pressure pump being activated inter alia during a starting procedure of an internal combustion engine , the control method including the following consecutive steps when the internal combustion engine does not manage to start during the starting procedure:checking external parameters of the internal combustion engine, and then whether at least one external parameter is validated;measuring a physical parameter at the high-pressure output,applying an electrical detachment control signal as a replacement for the electrical control signal to the high- ...

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Номер записи: 35
17-03-2016 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20160076475A1
Автор: NAGAKURA Keisuke, Suzuki Takashi, Suzuki Tomoya
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An engine includes a low-pressure delivery pipe that stores fuel to be injected from port injection valves, a feed pump that supplies the fuel to the low-pressure delivery pipe, a high-pressure delivery pipe that stores the fuel to be injected from in-cylinder injection valves, a high-pressure pump driven in response to rotation of the engine, and a fuel pressure sensor that detects a pressure of the fuel stored in the low-pressure delivery pipe. An engine ECU controls the feed pump based on a detection value from a fuel pressure sensor, and when the engine ECU executes an abnormality diagnosis of the fuel pressure sensor, the engine ECU increases a rotational speed of the engine to be higher than a rotational speed when the engine ECU does not execute an abnormality diagnosis of the fuel pressure sensor. This improves the accuracy of an abnormality determination of the fuel pressure sensor. 1. A control device for an internal combustion engine ,said internal combustion engine comprising:a storage section that stores fuel to be injected into an intake passage;a feed pump that pressurizes and supplies the fuel to said storage section;a high-pressure storage section that stores the fuel to be injected into a cylinder;a high-pressure pump that is driven in response to rotation of said internal combustion engine, and pressurizes and supplies the fuel to said high-pressure storage section; anda fuel pressure sensor that detects a pressure of the fuel stored in said storage section,a pressure in said storage section being set to be lower than a pressure in said high-pressure storage section, andsaid control device controlling said feed pump based on a detection value from said fuel pressure sensor, and when said control device executes an abnormality diagnosis of said fuel pressure sensor, said control device increasing a rotational speed of said internal combustion engine to be higher than a rotational speed when said control device does not execute an abnormality ...

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Номер записи: 36
17-03-2016 дата публикации

SYSTEM FOR SUPPLYING FUEL TO AN ENGINE

Номер: US20160076495A1
Автор: AKITA Minoru, TAGAWA Naoyuki
Принадлежит:

A fuel-supply system has a fuel pump, a pressure controller, a signal output device and a power switch. The pressure controller adjusts the observed fuel pressure of the fuel and may electronically communicate with a motor driving the fuel pump to regulate the supply of fuel from a fuel tank of the fuel-supply system to an engine. In detail, the pressure controller performs feedback control of a voltage applied to the motor such that the pressure of a fuel pumped from the fuel pump approaches to have a first target and/or ideal fuel pressure value. Further, the signal output device outputs the first target fuel pressure value to the pressure controller. Activation of the power switch supplies power, from a power source, to the pressure controller, the motor and the signal output device. Further, the pressure controller may perform feedback control based on a second target fuel pressure value. 1. A fuel-supply system , comprising:a fuel pump powered by a motor wherein the fuel pump supplies fuel from a fuel tank to an engine;a pressure controller that performs feedback control of a voltage of an electric power applied to the motor to adjust an observed fuel pressure of the fuel to approach a first target fuel pressure value;a signal output device that outputs the first target fuel pressure value to the pressure controller; anda power switch coupled to a power source that is configured to supply the electric power wherein activation of the power switch allows the electric power to be supplied to the pressure controller, the motor and the signal output device; andfurther wherein the pressure controller is configured to perform feedback control of the voltage applied to the motor based on a second target fuel pressure value to adjust the observed fuel pressure of the fuel until the first target fuel pressure value is outputted from the signal output device to the pressure controller after the power switch is activated.2. The fuel-supply system of wherein the pressure ...

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Номер записи: 37
15-03-2018 дата публикации

Method For Regulating A Fuel Delivery Pump

Номер: US20180073498A1
Автор: BEHRENDT Gerald
Принадлежит:

A method for regulating a fuel delivery system, having a fuel delivery pump and an electric motor. The fuel delivery pump is driven by the electric motor, which is actuated by an actuation current. At a predefinable time the actual volume (delivered by the fuel delivery pump is determined at an actual pressure that prevails at this time. A target rotational speed for the electric motor driving the fuel delivery pump is derived from the determined actual volume and a target pressure. 110.-. (canceled)11. A method for regulating a fuel delivery system , having a fuel delivery pump and an electric motor , wherein the fuel delivery pump is driven by the electric motor and the electric motor is actuated by an actuation current , comprising:determining, at a predefinable time, an actual volume delivered by the fuel delivery pump at an actual pressure that prevails at the predefinable time; andderiving a target rotational speed for the electric motor driving the fuel delivery pump from the determined actual volume and a target pressure.12. The method as claimed in claim 11 , wherein the actual volume delivered by the fuel delivery pump at the predefinable time is acquired from a known characteristic diagram based on a prevailing actual pressure and a present actual rotational speed.13. The method as claimed in claim 11 , wherein the actual volume is acquired from a known characteristic diagram based on an actual pressure and an actual actuation current.14. The method as claimed in claim 11 , wherein a target rotational speed of the electric motor is acquired from a characteristic diagram based on the determined actual volume and the target pressure.15. The method as claimed in claim 11 , wherein the determined actual volume and the target rotational speed are acquired from a same characteristic diagram.16. The method as claimed in claim 11 , wherein the determined actual volume is processed in a correction module claim 11 , wherein the actual pressure and the target ...

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Номер записи: 38
24-03-2022 дата публикации

VEHICLE SAFETY DEVICE FOR ENGINE SHUT-OFF AND EMERGENCY ASSISTANCE

Номер: US20220090551A1
Автор: Clark Carl M., Lynn Randall S.
Принадлежит:

A vehicle safety device for detecting vehicle tilt automatically shuts-off power to an ignition system and fuel pump and summons emergency assistance using a bistable switch circuit that toggles between a first bistable switch position in response to a reset signal and a second bistable switch position in response to an alert signal. The safety device can remain in the bistable switch positions without a power source and employ an encrypted bi-directional protocol to summon emergency assistance and generate the reset signal without vehicle operator intervention. 1a tilt sensor that generates an alert signal in response to vehicle tilt; and selectively connect a power source to an ignition system and a fuel pump in the first bistable switch position in response to a reset signal; and', 'selectively disconnect the power source from the ignition system and the fuel pump and generate a notification signal in the second bistable switch position in response to the alert signal to shut off the engine and summon emergency assistance at a remote location., 'a bistable switch circuit that toggles between a first bistable switch position and a second bistable switch position to. A vehicle safety device, comprising: This application is a continuation and claims benefit of U.S. patent application Ser. No. 16/746,474 filed Jan. 17, 2020, which is a continuation-in-part and claims benefit of U.S. patent application Ser. No. 15/872,829 filed Jan. 16, 2018 (now U.S. Pat. No 10,539,084), which is a continuation-in-part and claims benefit of U.S. patent application Ser. No. 14/944,818 filed Nov. 18, 2015 (now U.S. Pat. No 9,869,286), which is a non-provisional and claims benefit of U.S. Provisional Application No. 62/081,127, filed Nov. 18, 2014, the specification(s) of which is/are incorporated herein in their entirety by reference.Also, U.S. patent application Ser. No. 15/872,829 is a non-provisional and claims benefit of U.S. Provisional Patent Application No. 62/516,351 filed Jun. ...

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Номер записи: 39
24-03-2022 дата публикации

METHOD FOR MANAGING A PISTON PUMP FOR A HEAT ENGINE

Номер: US20220090557A1
Автор: MOINE Xavier
Принадлежит:

Disclosed is a method for managing a piston pump using a computer of a vehicle, the pump including a guide, a piston slidably mounted in the guide, and a solenoid, suitable for moving the piston, the method including, as long as the fuel pressure in the compression chamber of the pump is below a predetermined pressure threshold, a step of the computer controlling the solenoid in order to move the piston to its high position, and a step of the computer detecting that the predetermined pressure threshold has been exceeded when the current value, measured after a predetermined period, is greater than or equal to a predetermined reference value so that the computer ceases to control the solenoid. 1. A method for managing a piston pump of a fuel injection system on board a combustion engine vehicle using a computer of said vehicle , in the starting phase of the vehicle during which the pump operates to pressurize the fuel when the combustion engine has not yet started , said pump comprising a guide , a piston slidably mounted in said guide in order to form a fuel compression chamber , and a solenoid suitable for , when a control current generated by the computer passes through the solenoid , moving the piston between a low position in which the compression chamber is suitable for being emptied of fuel and a high position in which the compression chamber is suitable for being filled with fuel— the intake phase— and a return spring acting on the piston to return the piston to the low position in the absence of said control current passing through the solenoid— the compression phase— said method comprising , as long as the fuel pressure in the compression chamber is below a predetermined pressure threshold:the piston initially being under the effect of the return spring, causing the computer controlling the solenoid to move the piston to the piston's high position,after a predetermined period, causing the computer to measure a value of the intensity of the current passing ...

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Номер записи: 40
16-03-2017 дата публикации

FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20170074202A1
Автор: ASAYAMA Kazuhiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A fuel supply apparatus for an internal combustion engine includes a motor, a fuel pump, an alternator, a centrifugal clutch, and an electronic control unit. The centrifugal clutch is configured to, when the rotation speed of the output shaft of the motor is higher than or equal to an engaging rotation speed, connect the output shaft of the motor with the rotary shaft of the alternator. The engaging rotation speed is a rotation speed higher than a rotation speed of the rotary shaft at which torque that acts on the rotary shaft as a result of generation of electric power by the alternator becomes maximum and is a rotation speed lower than a rotation speed at which torque for driving the high-pressure fuel pump cannot be provided by only the motor at the time when the motor is driven at rated output power. 1. A fuel supply apparatus for an internal combustion engine , the fuel supply apparatus comprising:a motor including an output shaft;a fuel pump configured to be driven by rotation of the output shaft of the motor, the fuel pump being configured to supply pressurized fuel to the internal combustion engine;an alternator including a rotary shaft that rotates with rotation of a crankshaft of the internal combustion engine, the alternator being configured to generate electric power as the rotary shaft is rotated;a centrifugal clutch interposed between the output shaft of the motor and the rotary shaft of the alternator, the centrifugal clutch being configured to, when a rotation speed of the output shaft of the motor is higher than or equal to an engaging rotation speed, connect the output shaft of the motor with the rotary shaft of the alternator, the centrifugal clutch being configured to, when the rotation speed of the output shaft of the motor is lower than the engaging rotation speed, disconnect the output shaft of the motor from the rotary shaft of the alternator, the engaging rotation speed being a rotation speed higher than a rotation speed of the rotary shaft ...

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Номер записи: 41
14-03-2019 дата публикации

METHODS AND SYSTEMS FOR HIGH PRESSURE FUEL PUMP COOLING

Номер: US20190078531A1
Автор: Pierce Michael Anthony, Sanborn Ethan D., Thomas Joseph Lyle
Принадлежит:

Methods and systems are provided for temperature control of a high pressure pump (HPP) of a direct injection system. When direct injection is disabled, the HPP and the associated direct injectors are intermittently operated when the HPP temperature rises above a modeled threshold temperature. The HPP and injectors are operated until the HPP temperature falls below the modeled threshold temperature. 1. A method , comprising:during an engine warm idling condition,modeling a temperature of a high pressure pump configured to deliver fuel to direct injectors as a function of each of measured engine coolant temperature and an amount of time elapsed since a last deactivation of each of the direct injectors; andtemporarily reactivating each of the direct injectors and the high pressure fuel pump responsive to the modeled temperature exceeding a threshold.2. The method of claim 1 , further comprising claim 1 , maintaining each of the direct injectors and the high pressure fuel pump reactivated until the modeled temperature of the pump is lower than the threshold.3. The method of claim 1 , wherein the engine is a boosted engine claim 1 , and wherein the warm idling condition includes operating the engine below a threshold engine speed and supplying fuel to the engine via port injectors only.4. The method of claim 3 , wherein the warm idling condition further includes after a catalyst light-off temperature has been exceeded and an engine cold-start has been completed.5. The method of claim 1 , wherein the modeled temperature is further based on one or more of direct injection fuel rail temperature and director injector tip temperature.6. The method of claim 1 , wherein the temporarily reactivating includes intermittently injecting fuel via the direct injectors and the high pressure fuel pump until the modeled temperature is below the threshold.7. The method of claim 1 , wherein the temporarily reactivating includes determining a fuel flow through an activated high pressure ...

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Номер записи: 42
24-03-2016 дата публикации

METHOD FOR CONTROLLING A LOW PRESSURE CIRCUIT BY EMPLOYING FUTURE CONDITIONS

Номер: US20160084188A1
Автор: CEDFORS Dan, FOGELBERG Patrik, FORSBERG Carina, Jonsson Anders, Kylström Kim
Принадлежит:

A method and a system for control of a low-pressure circuit in a fuel system of a vehicle, which circuit is arranged to provide the vehicle's engine with fuel from at least one fuel tank via a pressure change system. The system includes a determination unit to make a determination of a future working point for the engine. The determination unit bases this determination on information about a section of road ahead. The system also has a pump operating unit which operates at least one controllable fuel pump which is part of the low-pressure circuit. The pump operating unit bases this operation on the future working point. 1. A method for controlling a low-pressure circuit in a fuel system of a vehicle , the vehicle including a combustion engine , the method comprising:operating the circuit for providing the engine with fuel from at least one fuel tank and via a pressure change system;obtaining information about a section of road ahead of the vehicle;determining a future working point for the engine based on the information about a section of road ahead of the vehicle, andcontrolling at least one controllable fuel pump which forms part of the low-pressure circuit based on the future working point.2. A method according to claim 1 , further comprising controlling a flow of fuel through the at least one fuel pump independently of a speed ω of the engine.3. A method according to claim 1 , wherein the at least one fuel pump comprises an engine fuel pump which pumps fuel from the at least one fuel tank to the pressure change system.4. A method according to claim 3 , further comprising increasing a feed pressure Pfor the engine fuel pump if the future working point for the engine indicates an increase in torque offtake and/or acceleration.5. A method according to claim 3 , further comprising reducing a feed pressure Pfor the engine fuel pump if the future working point for the engine indicates a decrease in torque offtake and/or a retardation.6. A method according to claim 3 ...

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Номер записи: 43
25-03-2021 дата публикации

System For Adapting An Internal Combustion Engine To Be Powered By Gaseous Fuel In Gas Phase And By Gaseous Fuel In Liquid Phase

Номер: US20210088003A1
Автор: Cybulko Tomasz, Dobrogowski Piotr, Sadowski Andrzej, Trocki Marcin
Принадлежит:

System for adapting an internal combustion engine to be powered by gaseous fuel in gas phase and by gaseous fuel, an internal combustion engine arrangement comprising the system and a method for adapting an internal combustion liquid fuel engine to be powered by gaseous fuel in gas phase and gaseous fuel in liquid phase. 1. A system for adapting an internal combustion engine to be powered by gaseous fuel in gas phase and by gaseous fuel in liquid phase at the same time , comprising at least one cylinder and at least one liquid fuel injector for injecting liquid fuel directly into the at least one cylinder , wherein the system comprises:a tank of gaseous fuel in liquid phase,a pump of gaseous fuel in liquid phase in fluid communication with the tank of gaseous fuel in liquid phase for pumping gaseous fuel in liquid phase from the tank,at least one gaseous fuel injector for injecting gaseous fuel in gas phase,a gaseous fuel reducer for bringing gaseous fuel from liquid into gas phase, with the reducer in fluid communication with the gaseous fuel pump for receiving gaseous fuel in liquid phase, and with the at least one gaseous fuel injectors for being fed with gaseous fuel in gas phase,the system is adapted to be in fluid communication between the pump of gaseous fuel in liquid phase and the at least one liquid fuel injector for supplying by the injector the gaseous fuel in liquid phase and for injecting gaseous fuel in liquid phase directly into the at least one cylinder through the at least one liquid fuel injector.2. The system according to claim 1 , further comprising a control arrangement for controlling the system.3. The system according to claim 2 , wherein the control arrangement comprises a controller for controlling the pump of gaseous fuel in liquid state.4. The system according to claim 2 , wherein the control arrangement comprises a controller of gaseous fuel for controlling the system.5. The system according to claim 2 , wherein the system comprises a ...

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Номер записи: 44
29-03-2018 дата публикации

Method For Controlling A Fuel Delivery System

Номер: US20180087458A1
Автор: BEHRENDT Gerald
Принадлежит:

A method for controlling a fuel delivery system of an internal combustion engine, having a fuel delivery pump that is driven by an electric motor. The pressure that prevails in the fuel delivery system is determined by a volume difference between the fuel quantity delivered by the fuel delivery pump and the fuel requirement of the internal combustion engine and/or of the fuel delivery system. 110.-. (canceled)11. A method for controlling a fuel delivery system of an internal combustion engine , having a fuel delivery pump that is driven by an electric motor , comprising:determining a volume difference between a fuel quantity delivered by the fuel delivery pump and a fuel requirement of at least one of the internal combustion engine and the fuel delivery system; anddetermining a pressure that prevails in the fuel delivery system is determined based on the volume difference between the fuel quantity which is delivered by the fuel delivery pump and the fuel requirement of at least one of the internal combustion engine and the fuel delivery system.12. The method as claimed in claim 11 , further comprising:performing a calibration to determine the pressure that prevails in the fuel delivery system;setting an operating point for calibration purposes at which operating point the fuel requirement of the internal combustion engine is substantially identical to the fuel quantity delivered by the fuel delivery pump, wherein a known pressure prevails in the fuel delivery system at the operating point for calibration.13. The method as claimed in claim 12 , wherein claim 12 , starting from the calibration point claim 12 , a change in the pressure is determined in a manner dependent on a fuel quantity delivered by the fuel delivery pump.14. The method as claimed in claim 12 , wherein the pressure in the fuel delivery system is determined within a predefinable operating range of the fuel delivery pump based at least in part on a change in the fuel delivery quantity claim 12 , ...

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Номер записи: 45
29-03-2018 дата публикации

Fuel injection system for engine

Номер: US20180087464A1
Автор: Tomoaki Sekita
Принадлежит: Mahle Electric Drives Japan Corp

A battery-less fuel injection system, provided with an injector for injecting fuel supplied to an engine, a fuel pump for supplying fuel to the injector, and an ECU for controlling the injector, wherein a fuel pressure sensor for detecting the fuel pressure given to the injector is provided, and the ECU controls the fuel injection in the process of starting the engine, so that execution of fuel injection is suspended when the fuel pressure detected by the fuel pressure sensor is a set pressure or less, until it is confirmed that the detected fuel pressure has exceeded the set pressure.

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Номер записи: 46
29-03-2018 дата публикации

METHODS AND SYSTEMS FOR HIGH PRESSURE FUEL PUMP COOLING

Номер: US20180087465A1
Автор: Pierce Michael Anthony, Sanborn Ethan D., Thomas Joseph Lyle
Принадлежит:

Methods and systems are provided for temperature control of a high pressure pump (HPP) of a direct injection system. When direct injection is disabled, the HPP and the associated direct injectors are intermittently operated when the HPP temperature rises above a modeled threshold temperature. The HPP and injectors are operated until the HPP temperature falls below the modeled threshold temperature. 1. A method , comprising:during an engine warm idling condition,maintaining each of engine direct injectors and a high pressure fuel pump delivering fuel to the direct injectors disabled until a modeled temperature of the pump is higher than a threshold; andthen temporarily reactivating each of the engine direct injectors and the high pressure fuel pump until the modeled temperature is below the threshold.2. The method of claim 1 , wherein the warm idling condition includes operating the engine below a threshold engine speed and supplying fuel to the engine via port injectors only.3. The method of claim 1 , wherein each of the engine direct injectors and the high pressure fuel pump is maintained disabled until the modeled temperature is higher than an upper threshold claim 1 , and wherein the temporarily reactivating is performed until the modeled temperature is below a lower threshold.4. The method of claim 1 , wherein the modeled temperature of the pump is based on each of an engine coolant temperature and a duration of deactivation of the engine direct injectors.5. The method of claim 2 , wherein the reactivating includes intermittently injecting fuel via the direct injectors and the high pressure fuel pump until the modeled temperature is below the threshold.6. The method of claim 5 , wherein the reactivating includes adjusting a fuel pulse-width and interval of the intermittently injecting based on a difference between the modeled temperature and the threshold.7. The method of claim 5 , further comprising claim 5 , adjusting fueling via the port injectors based on ...

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Номер записи: 47
30-03-2017 дата публикации

HIGH PRESSURE PUMP CONTROLLER

Номер: US20170089291A1
Автор: Suzuki Masahiko
Принадлежит:

When a plunger of a high pressure pump is rising, a high pressure pump controller closes a regulator valve by energizing a solenoid of an electromagnetic actuator of the high pressure pump to discharge fuel into a delivery pipe. Further, this fuel discharge energization is stopped before the plunger reaches top dead center at a pump TDC timing. Further, a fuel pressure of the delivery pipe is detected at the pump TDC timing, and based on that detected value, a time Td from the pump TDC timing until a valve opening timing of the regulator valve is estimated. Once the estimated time Td elapses from the pump TDC timing, the solenoid is reenergized to removed a movement speed of a movable portion in a direction that pushes the regulator valve in an opening direction. 1. A high pressure pump controller for controlling a high pressure pump , comprising:a discharge energizer;an estimator; anda reenergizer, wherein a pump chamber having an inlet and an outlet for fuel,', 'a plunger that reciprocates within the pump chamber,', 'a regulator valve that opens and closes a fuel passage connected to the inlet,', 'a first spring that biases the regulator valve in a closing direction along a movement direction of the regulator valve, the regulator valve configured to close the fuel passage in the closing direction, and', 'an electromagnetic actuator that causes the regulator valve to move to open and close,, 'the high pressure pump includes'} a movable portion biased by a second spring in an opening actuation direction to push the regulator valve in an opening direction, the opening direction being opposite to the closing direction, and', 'a solenoid that, when energized, attracts the movable portion in a direction opposite to the opening actuation direction,, 'the electromagnetic actuator includes'}the outlet is connected to a fuel storage unit which stores fuel to be supplied to an injector,a plunger rise period is defined as when the plunger is rising from bottom dead center to ...

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Номер записи: 48
16-04-2015 дата публикации

Diagnosing fault in common rail fuel system

Номер: US20150106040A1
Автор: Daniel R. Puckett, Nandagopal Methil
Принадлежит: Caterpillar Inc

A method of diagnosing a fault in a common rail fuel system having a proportional-integral-derivative (PID) controller includes determining a first integral output corresponding to a first fuel flow condition and a first rail pressure setting. The method includes comparing the first integral output with a threshold integral output and determining a second integral output corresponding to a second fuel flow condition and the first rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes determining a third integral output corresponding to the first fuel flow condition and a second rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes identifying a failure in at least one of a flow control valve arrangement and a pressure relief valve of the common rail fuel system based on the first, second, and the third integral outputs.

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Номер записи: 49
13-04-2017 дата публикации

REGULATION OF FUEL RAIL PRESSURE USING ELECTRONIC FUEL TRANSFER PUMP IN LOW PRESSURE FUEL CIRCUITS

Номер: US20170101959A1
Автор: Blizard Norman C., Linen Edward Nathan, MISHRA Shounak, Worthington Joseph Andrew
Принадлежит:

Systems and related methods for regulating fuel rail pressure for internal combustion engines utilizing an electronic fuel transfer pump (eFTP) on the low side to provide robust control of fuel pressure on the high side. The eFTP is in fluid communication with a low-pressure fuel circuit for providing a low-pressure fuel flow at a low pressure to a high-pressure pump. Upon failure of a fuel control valve, a pressure-responsive valve, and/or a pressure sensor impacting the high-side fuel pressure, the eFTP modulates the low-side fuel flow and/or low-side fuel pressure to mitigate damage to the engine. A controller in operative communication with the eFTP and/or one or more sensors is configured to provide a pump command to the eFTP in response to a failure condition impacting the high-side fuel pressure. 1. A method for operating a fuel system of an internal combustion engine comprising:providing a low-pressure (LP) fuel flow from an electronic fuel transfer pump to an inlet of a high-pressure (HP) pump fluidly coupled to an HP fuel circuit;monitoring a condition of the HP fuel circuit;detecting whether a failure condition is impacting a high-side fuel pressure;determining an electronic fuel transfer pump target value in response to the failure condition;commanding the electronic fuel transfer pump to provide a modulated LP fuel flow; andregulating a low-side fuel pressure in response to the electronic fuel transfer pump target value.2. The method of claim 1 , wherein the failure condition includes at least one of a press-responsive valve tripping claim 1 , a failure of the HP pump claim 1 , a failure of a fuel control valve claim 1 , or a failure of a HP sensor.3. The method of claim 2 , wherein determining the electronic fuel transfer pump target value comprises at least one of:in response to the pressure-responsive valve tripping, increasing at least one of an electronic fuel transfer pump flow, an electronic fuel transfer pump speed, or the low-side fuel pressure ...

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Номер записи: 50
26-04-2018 дата публикации

SYSTEMS AND METHODS FOR CONTROLLING A FUEL PUMP IN START/STOP AND HYBRID ELECTRIC VEHICLES

Номер: US20180112619A1
Автор: Doan Jacob, Pifher Kenneth L., Wroza Larry J., Yang Dennis Seung-Man
Принадлежит:

Methods and systems are provided for controlling a vehicle fuel pump at a fuel shut-off event based at least in part on whether combustion stability issues, or potential stall conditions, are indicated in a drive cycle prior to the fuel shut-off event. In one example, a method may include maintaining power to the fuel pump responsive to the potential stall condition being indicated, and independent of an indicated pressure in a fuel rail configured to receive pressurized fuel from the fuel pump, and where the fuel shut-off event includes a deceleration fuel shut-off event or an idle stop event. In this way, fuel may be kept flowing across the fuel pump during fuel shut-off events, responsive to indications of combustion stability issues, such that fuel pump cavitation and other engine and fuel pump-related complications may be avoided. 1. A method comprising:propelling a vehicle at least in part by an engine that combusts fuel provided to the engine via a fuel pump;controlling fuel injection to one or more engine cylinders via one or more fuel injectors;monitoring the engine for a potential stall condition while the engine is combusting fuel; andcontrolling the fuel pump at a fuel shut-off event based on whether the potential stall condition is indicated.2. The method of claim 1 , further comprising:monitoring acceleration of a crankshaft coupled to one or more pistons of the engine via a crankshaft sensor; andwherein the potential stall condition includes one of at least multiple misfire events, and loss of engine torque, where misfire events and loss of engine torque are indicated via the crankshaft sensor.3. The method of claim 1 , further comprising;routing exhaust gas generated by the engine combusting fuel to an exhaust manifold;indicating an exhaust gas air/fuel ratio via an exhaust gas oxygen sensor; andwherein the potential stall condition includes an indication of a disturbance to the exhaust gas air/fuel ratio.4. The method of claim 1 , wherein the ...

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Номер записи: 51
26-04-2018 дата публикации

Method for Regulating a Fuel Delivery System

Номер: US20180112620A1
Автор: BEHRENDT Gerald
Принадлежит:

A method for regulating a fuel delivery system of an internal combustion engine in a motor vehicle having a fuel delivery pump for supplying the internal combustion engine with fuel, the fuel delivery pump having a pump mechanism driveable by an electric motor actuable by a control signal, and a pressure-sensor-free pressure monitor being provided in the fuel delivery system, includes: predefining a target rotational speed for the electric motor based on the control signal; predefining an upper rotational speed limit and/or a lower rotational speed limit for the target rotational speed, wherein the upper rotational speed limit depends on the maximum fuel requirement of the internal combustion engine, and the lower rotational speed limit depends on the minimum fuel requirement of the internal combustion engine; and determining the target rotational speed by a pressure-sensor-free calculation method. 112-. (canceled)13. A method for regulating a fuel delivery system of an internal combustion engine in a motor vehicle having a fuel delivery pump for supplying the internal combustion engine with fuel , the fuel delivery pump having a pump mechanism driveable by an electric motor actuable by a control signal , and a pressure-sensor-free pressure monitor being provided in the fuel delivery system , the method comprising:predefining a target rotational speed for the electric motor based on the control signal;predefining an upper rotational speed limit and/or a lower rotational speed limit for the target rotational speed, wherein the upper rotational speed limit depends on the maximum fuel requirement of the internal combustion engine, and the lower rotational speed limit depends on the minimum fuel requirement of the internal combustion engine; anddetermining the target rotational speed by a pressure-sensor-free calculation method.14. The method as claimed in claim 13 , further comprising changing the rotational speed of the electric motor if the determined target ...

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Номер записи: 52
05-05-2016 дата публикации

METHOD AND SYSTEM FOR SUPPLYING LIQUEFIED PETROLEUM GAS TO A DIRECT FUEL INJECTED ENGINE

Номер: US20160123244A1
Автор: Pursifull Ross Dykstra
Принадлежит:

A method for supplying fuel to a direct injection fuel pump of an internal combustion engine is described. In one example, pressure and/or temperature of a fuel supplied to the direct injection fuel pump may be adjusted to ensure liquid fuel is supplied to the direct injection fuel pump so that the possibility of engine air-fuel ratio errors may be reduced. 1. A method , comprising:increasing cooling of fuel supplied to a direct injection fuel pump in response to direct injection fuel pump volumetric efficiency being less than a threshold.2. The method of claim 1 , further comprising increasing pressure of fuel supplied to the direct injection fuel pump in response to the direct injection fuel pump volumetric efficiency being less than the threshold value.3. The method of claim 1 , further comprising determining a volumetric efficiency error and adjusting cooling of fuel supplied to the direct injection fuel pump in response to the volumetric efficiency error.4. The method of claim 1 , where cooling of fuel supplied to the direct injection fuel pump is performed via injecting a fuel into a cooling chamber.5. The method of claim 4 , further comprising supplying the fuel to an engine via a port fuel injector.6. The method of claim 4 , further comprising returning the fuel to a fuel tank.7. The method of claim 1 , where the volumetric efficiency is based on engine speed claim 1 , a direct injection fuel pump command claim 1 , and a fuel injection volume.8. A method claim 1 , comprising:increasing cooling of fuel supplied to a direct injection fuel pump in response to direct injection fuel pump volumetric efficiency being less than a threshold without increasing fuel pressure supplied to the direct injection fuel pump, in a first mode; andincreasing pressure of fuel supplied to the direct injection fuel pump in response to direct injection fuel pump volumetric efficiency being less than the threshold without decreasing temperature of fuel supplied to the direct ...

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Номер записи: 53
05-05-2016 дата публикации

METHOD AND APPARATUS FOR OPERATING AN EC-FUEL PUMP

Номер: US20160123267A1
Автор: KAHLERT Andreas
Принадлежит:

A method for operating an electronically commutated fuel pump with an upstream fuel pump electronics unit of a motor vehicle, wherein the fuel pump is operated at a predefined speed, the method includes detecting a speed irregularity of the electronically commutated fuel pump, the speed irregularity being determined by examining the synchronicity between rotary field and rotor of the fuel pump, and switching over the speed of the electronically commutated fuel pump to a higher speed value than the predefined speed until a stable operation of the fuel pump without loss of synchronicity between rotary field and rotor of the fuel pump is achieved, the switchover of the fuel pump to the higher speed is performed by a predefined speed jump or is performed at predefined speed steps, the speed being increased until stable operation of the fuel pump is achieved. 1. A method for operating an electronically commutated fuel pump with an upstream fuel pump electronics unit of a motor vehicle , the fuel pump being operated at a predefined speed , the method comprising:detecting a speed irregularity of the electronically commutated fuel pump, the speed irregularity being determined by examining the synchronicity between rotary field and rotor of the fuel pump; andswitching over the speed of the electronically commutated fuel pump to a higher speed value than the predefined speed until a stable operation of the fuel pump without loss of synchronicity between rotary field and rotor of the fuel pump is achieved, the switchover of the fuel pump to the higher speed being performed in one step by a predefined speed jump or being performed at predefined speed steps, the speed being increased until stable operation of the fuel pump is achieved.2. The method of claim 1 , wherein the speed of the fuel pump is lowered again after a predefined time once a speed value for stable operation has been reached.3. The method of claim 1 , wherein the fuel pump is operated again at the predefined ...

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Номер записи: 54
03-05-2018 дата публикации

Feedback Control Method For A Fuel Delivery System

Номер: US20180119633A1
Автор: BEHRENDT Gerald
Принадлежит:

A feedback control method for a fuel delivery system of an internal combustion engine, having a fuel delivery pump for supplying fuel, the fuel delivery pump having a pump mechanism driven by an electric motor, which is controlled by a generated control signal. The current fuel volume delivered by the fuel delivery pump and the prevailing fuel requirement of the internal combustion engine are included in the control signal. The prevailing fuel requirement is determined using characteristic variables that characterize the operating state of the internal combustion engine. 110.-. (canceled)11. A feedback control method for a fuel delivery system of an internal combustion engine in a motor vehicle , having a fuel delivery pump that supplies the internal combustion engine with fuel , the fuel delivery pump has a pump mechanism driven by an electric motor , the electric motor controlled by a control signal , comprising:generating the control signal for the electric motor, wherein a current fuel volume delivered by the fuel delivery pump and a prevailing fuel requirement of the internal combustion engine are included in the control signal;determining the prevailing fuel requirement based at least in part on characteristic variables that characterize an operating state of at least one of the internal combustion engine and the motor vehicle.12. The method as claimed in claim 11 , further comprising:determining the current fuel volume delivered by the fuel delivery pump from a current pressure prevailing in the fuel delivery system and a current rotational speed of the pump mechanism of the fuel delivery pump based at least in part on at least one characteristic map.13. The method as claimed in claim 12 , further comprising:determining the prevailing fuel requirement of the internal combustion engine based at least in part on at least one of:a gas pedal position,a charging pressure of a turbocharger,a rotational speed of the internal combustion engine,a delivered air mass,a ...

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Номер записи: 55
14-05-2015 дата публикации

FUEL INJECTION DEVICE

Номер: US20150128914A1
Автор: NONAKA Takumi, Watanabe Hideki
Принадлежит:

A fuel injection device comprising electricity-generating means generating electricity by rotation of an engine and outputting a predetermined signal, and a solenoid valve injecting fuel; the valve being opened as a result of a drive current applied to a coil, and the fuel being injected into an intake passage of the engine at a predetermined timing during the rotation of the engine; to ensure that the flow rate required during high-speed operation ca be adequately provided in a fuel injection device for injecting/supplying fuel to an engine. The electricity-generating means is an alternating current generation means attached to the engine in a crank angle position at which an output is generated in synchronization with the intake timing of the engine; the signal is an injection command signal applied to the solenoid valve as an alternating-current drive current; and the applied voltage increases with increased engine speed. 1. A fuel injection device:a solenoid valve for injecting fuel, the valve being opened as a result of a drive current being applied to a coil, and the fuel being injected into an intake passage of a engine at a predetermined timing during the rotation period of the engine, andan alternating-current generator having an electromotive coil at a predetermined position on the external periphery of a flywheel disposed on an engine shaft and provided with a magnet in an area along the edge, the alternating-current generator generating electricity by the rotation of the engine and outputting a predetermined signal, the electromotive coil is disposed at a predetermined position along the external periphery of the flywheel in a crank angle position at which an output is generated in synchronization with the intake timing of the engine used, the signal is an injection command signal applied to the solenoid valve as an alternating-current drive current, and the applied voltage increases with increased engine speed.2. The fuel injection device of claim 1 , ...

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Номер записи: 56
27-05-2021 дата публикации

SYSTEMS AND METHODS FOR REDUCING RELEASE OF UNDESIRED EVAPORATIVE EMISSIONS IN PLUG-IN HYBRID ELECTRIC VEHICLES

Номер: US20210156331A1
Автор: Culbertson Tom Raymond, Pifher Kenneth L., Pursifull Ross Dykstra
Принадлежит:

Methods and systems are provided for reducing a potential for release of undesired evaporative emissions to atmosphere for vehicles that rely primarily on an electric-only mode of operation for vehicle propulsion. In one example, a method may include in response to a vehicle-on request via a driver of a vehicle, maintaining off a fuel pump that supplies a fuel to a set of port fuel injectors, and re-pressurizing the set of port fuel injectors via operation of the fuel pump based on a predicted engine-start request during a drive cycle following the vehicle-on request. In this way, escape of fuel from pressurized port fuel injectors may be reduced or avoided during engine-off conditions, which may reduce opportunity for release of undesired evaporative emissions to atmosphere. 1. A method comprising:in response to a vehicle-on request via a driver of a vehicle, maintaining off a fuel pump that supplies a fuel to a fuel rail that in turn supplies the fuel to a set of fuel injectors for providing the fuel to an engine; andcommanding on the fuel pump based on a predicted engine-start request during a drive cycle following the vehicle-on request.2. The method of claim 1 , wherein the driver is an autonomous driver.3. The method of claim 1 , wherein the set of fuel injectors are port fuel injectors.4. The method of claim 1 , wherein the vehicle is a plug-in hybrid electric vehicle.5. The method of claim 1 , wherein the predicted engine-start request is based on driver demand.6. The method of claim 1 , wherein the predicted engine-start request is based on an available amount of a motor torque contributable via a motor that is used to propel the vehicle in an absence of operation of the engine.7. The method of claim 1 , further comprising maintaining off the fuel pump for an entirety of the drive cycle responsive to an absence of the predicted engine-start request during the drive cycle.8. The method of claim 1 , further comprising learning a set of commonly traveled ...

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Номер записи: 57
11-05-2017 дата публикации

FUEL SYSTEM FOR INTERNAL COMBUSTION ENGINE AND A METHOD TO LESSEN PRESSURE FLUCTUATIONS IN A FUEL FILTER DEVICE IN A FUEL SYSTEM

Номер: US20170130665A1
Автор: CEDFORS Dan
Принадлежит:

A fuel system for an internal combustion engine is provided, which comprises a first fuel tank, a fuel filter device, arranged between a low pressure pump operated by an electric motor and a high pressure pump, a first fuel conduit, through which the low pressure pump is arranged to supply fuel to the fuel filter device, and a control device, arranged in connection with an electric motor operating the low pressure pump. An overflow conduit is arranged in connection with a deaeration outlet, arranged in the fuel filter device and the first fuel tank, and the control device is arranged to control the electric motor, in such a way that the low pressure pump is active when the internal combustion engine is turned off for a limited period, whereby fuel may flow from the fuel filter device via the deaeration outlet and the overflow conduit, back to the first fuel tank. 1. A fuel system for an internal combustion engine , which fuel system comprises:a first fuel tank;a fuel filter device, arranged between a low pressure pump operated by an electric motor and a high pressure pump;a first fuel conduit, through which the low pressure pump is arranged to supply fuel to the fuel filter device; anda deaeration outlet associated with the fuel filter device;an overflow conduit arranged in connection with the deaeration outlet and the first fuel tank; anda control device arranged in connection with an electric motor, operating the low pressure pump,wherein the control device is arranged to control the electric motor, in such a way that the low pressure pump is active when the internal combustion engine is turned off for a limited period, whereby fuel may flow from the fuel filter device, via the deaeration outlet and the overflow conduit, back to the first fuel tank.2. A fuel system according to claim 1 , wherein the control device is arranged to deactivate the low pressure pump when the internal combustion engine has been turned off for a predetermined period.3. A fuel system ...

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Номер записи: 58
02-05-2019 дата публикации

VARIABLE OUTPUT FUEL PUMP HAVING A BLDC MOTOR AND CONTROL MODULE THEREFOR

Номер: US20190128207A1
Автор: Blackman Troy, Gebhardt Wally, Vandre Dan
Принадлежит:

A variable output fuel pump includes a BLDC motor and a control module to supply three power phases A, B and C to the motor, wherein the control module connects to a power supply connection of a vehicle, and to a vehicle communications network such as a CANbus to control operation of the BLDC motor. The motor is driven by a motor driver that is connected to a micro-controller and in turn, the micro-controller is connected to a communications or CANbus I/F module. In this manner, the micro-controller can be operated by the vehicle control system such as an engine control unit (ECU) through a connection with the vehicle CANbus or other vehicle communications network. The motor driver also detects characteristics of the power used in the three power phases of the motor so that the system is operated with or without motor sensors located within the motor. By connection to the vehicle CANbus or other vehicle communications network, the vehicle ECU can be used to remotely control the fuel pump motor speed and other operational parameters of the motor to thereby provide a variable operate fuel pump. 1. A variable output fuel pump for a vehicle comprising:a pump unita brushless DC (BLDC) motor drivingly connected to said pump unit wherein said motor receives a motor power supply that is variable to generate a variable motor speed that varies a resultant pump output of fluid pumped by said pump unit; anda motor control module operatively connected to said motor, wherein said motor control unit is adapted to operatively connect to and be controlled by a vehicle communications network for controlling and varying said motor speed and said resultant pump output, said motor control module including a micro-controller operatively controlling operation of said motor by controlling said motor power supply; andsaid motor control module further comprising a network interface module which comprises a power supply connection connectable to power supply terminals of a vehicle power ...

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Номер записи: 59
19-05-2016 дата публикации

HIGH-PRESSURE PUMP AND FUEL INJECTION SYSTEM HAVING A HIGH-PRESSURE PUMP

Номер: US20160138489A1
Автор: Lamm Marco
Принадлежит:

A high-pressure pump (), which is used in particular as a radial or in-line piston pump for fuel injection systems of air-compressing, auto-ignition internal combustion engines (), comprises a first pump assembly (), a second pump assembly (), and a drive shaft (), which is used to drive the first pump assembly () and the second pump assembly (). Furthermore, a first inlet valve () for a pump working chamber () of the first pump assembly () and at least one second inlet valve () for a pump working chamber () of the second pump assembly () are provided. The first inlet valve () is designed as a controlled inlet valve (), wherein fuel pumping by the first pump assembly () can be at least substantially interrupted by the first inlet valve () in a partial-load operating mode. The invention further relates to a fuel injection system () having such a high-pressure pump (). 1289891011814159. A high-pressure pump () , comprising a first pump assembly () , at least one second pump assembly () , a drive shaft configured to drive the first pump assembly () and the second pump assembly () , a first inlet valve () for a pump working chamber () of the first pump assembly () , and at least one second inlet valve () for a pump working chamber () of the second pump assembly () ,characterized{'b': 10', '10', '8', '10, 'in that at least the first inlet valve () is a controlled inlet valve () and that fuel pumping by the first pump assembly () can be at least substantially interrupted by the first inlet valve () in a partial-load operating mode.'}2. The high-pressure pump according to claim 1 ,characterized{'b': 10', '10', '14', '14, 'in that the first inlet valve () is an electrically actuated suction valve () and/or that the second inlet valve () is an electrically actuated suction valve ().'}3. The high-pressure pump according to claim 1 ,characterized{'b': 6', '7', '8', '9, 'in that the drive shaft () has a cam () which is configured to drive the first pump assembly () and to drive ...

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Номер записи: 60
17-05-2018 дата публикации

Method For Regulating A Fuel Delivery System

Номер: US20180135549A1
Автор: BEHRENDT Gerald
Принадлежит:

A method for regulating a fuel delivery system without a pressure sensor. The fuel delivery system has a fuel delivery pump, an electric motor, and an evaluation unit. The fuel delivery pump is driven by the electric motor, which is actuated using control variables such that a prespecifiable fuel delivery is achieved. At least two different submethods are executed for ascertaining control variables, which are ascertained in the respective submethod and are supplied to an evaluation unit. The control variables are evaluated regarding their plausibility in the evaluation unit and the electric motor is actuated based on the ascertained control variables from only one or a plurality of submethods. 110.-. (canceled)11. A method for regulating a fuel delivery system without a pressure sensor , wherein the fuel delivery system has a fuel delivery pump , an electric motor that drives the fuel delivery pump , and an evaluation unit , wherein the electric motor is actuated using control variables such that a prespecifiable fuel delivery is achieved , comprising:executing at least two different submethods to ascertain the control variables;supplying the the control variables which are ascertained to an evaluation unit;evaluating the control variables regarding their plausibility in the evaluation unit; andactuating the electric motor based at least in part on the ascertained control variables from only one of the at least two different submethods or from the at least two different submethods.12. The method as claimed in claim 11 , wherein the submethods are executed at least one of in parallel and in series.13. The method as claimed in claim 11 , further comprising:evaluating the plausibility of the control variables with aid of external state variables;determining a current operating state based at least in part on the external state variables; andderiving limit values for the control variables from the current operating state that is currently established.14. The method as ...

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Номер записи: 61
17-05-2018 дата публикации

SYSTEMS AND METHODS FOR OPERATING A LIFT PUMP

Номер: US20180135550A1
Автор: Pursifull Ross Dykstra, Trzeciak Justin, Ulrey Joseph Norman
Принадлежит:

Methods and systems are provided for operating a lift pump of an engine fuel system. In one example, a method may comprise limiting a lift pump voltage to a lower first level when powering on a lift pump from off. The method may further comprise maintaining the lift pump voltage at the lower first level for a duration before increasing the lift pump voltage above the first level. 1. A method comprising:limiting a lift pump voltage to a lower first level when powering on a lift pump from off, and maintaining the lift pump voltage at the first level for a duration; andincreasing the lift pump voltage above the first level.2. The method of claim 1 , wherein the first level is less than a maximum voltage level of the lift pump.3. The method of claim 1 , wherein the first duration during which the lift pump voltage is maintained at the first level ends when a pressure upstream of a check valve positioned between the lift pump and a fuel rail increases to within a threshold difference of a pressure downstream of the check valve claim 1 , such that the maintaining the lift pump voltage at the first level for the duration comprises maintaining the lift pump voltage at the first level until the pressure upstream of the check valve increases to within the threshold difference of the pressure downstream of the check valve.4. The method of claim 1 , wherein the increasing the lift pump voltage is initiated after the maintaining the lift pump voltage at the first level for the duration.5. The method of claim 1 , wherein the increasing the lift pump voltage above the first level commences only after the lift pump begins adding pressure to the fuel rail.6. The method of claim 1 , wherein the increasing the lift pump voltage comprises ramping up the lift pump voltage at a desired ramp rate claim 1 , where the ramp rate is determined based on intake manifold pressure.7. The method of claim 5 , where the desired ramp rate is less than or equal to a maximum rate of intake manifold ...

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Номер записи: 62
17-05-2018 дата публикации

SYSTEMS AND METHODS FOR OPERATING A LIFT PUMP

Номер: US20180135551A1
Автор: Pursifull Ross Dykstra, Trzeciak Justin, Ulrey Joseph Norman
Принадлежит:

Methods and systems are provided for operating a lift pump of an engine fuel system. In one example, a method may comprise predicting when a fuel rail pressure will decrease below a threshold assuming that a lift pump remains off. The method may further comprise powering on the lift pump before the fuel rail pressure decreases below to the threshold to prevent fuel rail pressure from decreasing below the threshold. 1. A method comprising:maintaining a lift pump off that supplies fuel to a fuel rail;assuming that the lift pump is maintained off, predicting when a fuel rail pressure will decrease below a threshold based on fuel injection rates; andpowering on the lift pump before the fuel rail pressure decreases below the threshold such that actual fuel rail pressures do not decrease below the threshold.2. The method of claim 1 , further comprising estimating what a minimum future fuel rail pressure would be were the lift pump to be powered on at a current instance based on one or more of fuel line stiffness claim 1 , fuel injection rates claim 1 , and a lift pump spin-up period claim 1 , where the minimum future fuel rail pressure is a fuel rail pressure at which the lift pump would begin to add pressure to the fuel rail.3. The method of claim 2 , wherein the powering on the lift pump is initiated in response to the minimum future fuel rail pressure decreasing to within a threshold difference of the threshold claim 2 , such that future fuel rail pressures do not decrease below the threshold.4. The method of claim 2 , where the lift pump spin-up period is estimated based on one or more of a predicted fuel rail pressure profile and an amount of electrical power to be supplied to the lift pump when powering on the lift pump.5. The method of claim 2 , wherein the minimum future fuel rail pressure decreases for increases in one or more of the fuel line stiffness claim 2 , fuel injection rates claim 2 , and lift pump spin-up period.6. The method of claim 2 , further ...

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Номер записи: 63
26-05-2016 дата публикации

CONTROL DEVICE FOR VEHICLE

Номер: US20160146129A1
Автор: Suzuki Takashi
Принадлежит:

A control device causes the engine to start with a throttle valve being set to a first throttle position when required power required in an engine is smaller than a first threshold value and a detected fuel pressure detected by a low-pressure fuel sensor is lower than a second threshold value. The control device causes the engine to start with the throttle valve being set to a position larger than the first throttle position when the required power is smaller than the first threshold value and the detected fuel pressure is higher than the second threshold value. With this structure, a control device for a vehicle can be provided which allows intermittent operation of the engine with reduced variation in air-fuel ratio. 1. A control device for a vehicle equipped with an internal combustion engine ,said internal combustion engine including:a port injection valve that injects fuel into an intake passage;a fuel tank that stores the fuel to be injected from said port injection valve;a feed pump that sucks the fuel from said fuel tank and supplies the fuel to said port injection valve; anda throttle valve that is provided along said intake passage to adjust an amount of air,said control device comprising:a fuel pressure sensor that detects a pressure of the fuel supplied to said port injection valve; anda control unit that controls said feed pump based on a detected value from said fuel pressure sensor,said control unit changing a throttle position at the start of said internal combustion engine, in accordance with the fuel pressure detected by said fuel pressure sensor at the start of said internal combustion engine.2. The control device for a vehicle according to claim 1 , whereinwhen required power required in said internal combustion engine is smaller than a first threshold value and the detected fuel pressure detected by said fuel pressure sensor is lower than a second threshold value, said control unit causes said internal combustion engine to start with said ...

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Номер записи: 64
26-05-2016 дата публикации

METHOD AND SYSTEM FOR FUEL SYSTEM CONTROL

Номер: US20160146146A1
Автор: Pursifull Ross Dykstra
Принадлежит:

Methods and systems are provided for enforcing a minimum fuel lift pump commanded voltage that is determined as a function of commanded lift pump pressure and fuel flow rate. The minimum fuel lift pump voltage is applied when the commanded voltage is lower than the minimum voltage. The approach reduces engine stalls induced by ingestion of fuel vapors at an injection pump coupled downstream of the lift pump. 1. A method , comprising:adjusting fuel lift pump operation in response to a lift pump pressure sensor downstream of the lift pump and upstream of a high pressure pump; andoperating the lift pump with a minimum lift pump voltage when a commanded lift pump voltage is below the minimum lift pump voltage.2. The method of claim 1 , wherein the adjusting includes decreasing a lift pump voltage as an output of the pressure sensor increases and increasing a lift pump voltage as the output of the pressure sensor decreases.3. The method of claim 1 , wherein the minimum lift pump voltage is based on each of commanded lift pump pressure and fuel flow rate.4. The method of claim 1 , wherein the minimum lift pump voltage maintains lift pump pressure above fuel vapor pressure.5. The method of claim 1 , further comprising claim 1 , operating the fuel lift pump with the commanded lift pump voltage when the commanded lift pump voltage is above the minimum lift pump voltage.6. The method of claim 1 , wherein the lift pump delivers fuel from a fuel tank to the high pressure pump claim 1 , the high pressure pump delivering fuel to fuel injectors.7. The method of claim 1 , further comprising claim 1 , operating the fuel lift pump with a maximum lift pump voltage when the commanded lift pump voltage remains above the maximum lift pump voltage for more than a threshold duration.8. The method of claim 7 , further comprising claim 7 , operating the fuel lift pump with the commanded lift pump voltage when the commanded lift pump voltage remains above the maximum lift pump voltage for ...

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Номер записи: 65
24-05-2018 дата публикации

METHOD AND APPARATUS FOR CONTROLLING FUEL PRESSURE

Номер: US20180142642A1
Автор: De Blois Yvan, Grime Thomas L.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An engine fuel system includes a fuel delivery system including a first fuel pump that is coupled to a pressure relief valve that is arranged in parallel with a second fuel pump. The first fuel pump is disposed to deliver pressurized fuel to the second fuel pump and the pressure relief valve, and the second fuel pump is disposed to deliver pressurized fuel to the fuel rail. A controller characterizes the first fuel pump to determine a relationship between a fuel pump speed and a fuel pump current at a setpoint pressure for the pressure relief valve. A feed-forward pump speed command is determined based upon a target fuel pressure and a fuel flowrate. A closed-loop pump speed is commanded based upon the characterization of the fuel pump. The first fuel pump is controlled to deliver fuel to the second fuel pump based thereon. 1. A fuel system for an internal combustion engine , comprising:a fuel delivery system including a first fuel pump that is fluidly coupled to a pressure relief valve that is fluidly disposed in parallel with a second fuel pump; wherein the first fuel pump is disposed to deliver pressurized fuel to the second fuel pump and the pressure relief valve, and wherein the second fuel pump is disposed to deliver pressurized fuel to a fuel rail; and characterize the first fuel pump to determine a relationship between a fuel pump speed and a fuel pump current at a setpoint pressure for the pressure relief valve;', 'determine a target fuel pressure and a fuel flowrate;', 'determine a feed-forward pump speed command based upon the target fuel pressure and the fuel flowrate;', 'determine a closed-loop pump speed command based upon the target fuel pressure, the fuel flowrate and the relationship between fuel pump speed and fuel pump current of the first fuel pump at the setpoint pressure for the pressure relief valve; and', 'control operation of the first fuel pump to deliver fuel to the second fuel pump based upon the feed-forward pump speed command and the ...

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Номер записи: 66
04-06-2015 дата публикации

CONTROLLER INTEGRATED FUEL PUMP MODULE

Номер: US20150152805A1
Автор: LEE Byung Cheol, SONG Ju Tae
Принадлежит:

A controller integrated fuel pump module may include a receiving part formed on an outer surface of a flange assembled in a fuel tank, a PCB assembly configured by mounting elements of a controller to a PCB, wherein the PCB assembly is molded by a molding part while being received in the receiving part, and a convexo-concave portion having a shape in which recesses and bosses, the convexo-concave portion being repeatedly formed on an inner surface of the receiving part, such that a bonding force between the receiving part and the molding part is increased by the convexo-concave portion. 1. A controller integrated fuel pump module , wherein a receiving part is formed on an outer surface of a flange assembled in a fuel tank , the fuel pump module has a controller integrated structure in which a PCB assembly configured by mounting elements of a controller to a PCB is molded by a molding part while being received in the receiving part , and a convexo-concave portion having a shape in which recesses and bosses are repeated is formed on an inner surface of the receiving part such that a bonding force between the receiving part and the molding part is increased by the convexo-concave portion.2. The fuel pump module of claim 1 , wherein the recesses and bosses of the convexo-concave portion are repeated along a periphery of an inner surface of the receiving part and are formed lengthily on the inner surface of the receiving part.3. The fuel pump module of claim 2 , wherein upper ends of the recesses and the bosses are located above the inner surface of the receiving part.4. The fuel pump module of claim 2 , wherein the upper ends of the recesses and the bosses are formed above a location of the PCB or at a height of the PCB.5. The fuel pump module of claim 1 , wherein a side wall of the receiving part includes an outer wall and a partition wall separated inwards from the outer wall and the convexo-concave portion is formed on an inner surface of the partition wall.6. The ...

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Номер записи: 67
21-08-2014 дата публикации

Fuel injection control system for an internal combustion engine

Номер: US20140230791A1
Автор: Susumu Kojima, Tomojiro Sugimoto
Принадлежит: Toyota Motor Corp

In a fuel injection control system for an internal combustion engine provided with a low pressure fuel pump and a high pressure fuel pump, proportional plus integral control of a high pressure fuel pump is carried out to make a pressure of fuel come close to a target value between the high pressure fuel pump and fuel injection valves. In cases where the high pressure fuel pump is in operation, a feed pressure, which is a pressure of fuel between a low pressure fuel pump and the high pressure fuel pump, is caused to go down when an integral term in the proportional plus integral control does not change or is decreasing, and the feed pressure is caused to go up when the integral term is increasing. In cases where the high pressure fuel pump is in a stopped state, the feed pressure is made higher than before the high pressure fuel pump is stopped.

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Номер записи: 68
02-06-2016 дата публикации

OPTIMIZING INTERMITTENT FUEL PUMP CONTROL

Номер: US20160153383A1
Автор: Pursifull Ross Dykstra, Ulrey Joseph Norman
Принадлежит:

Various methods are provided for operating a fuel pump. In one example, a method of operating a fuel pump comprises iteratively reducing an on-duration of a low pressure fuel pump pulse, until a peak outlet pressure of the fuel pump decreases from a peak outlet pressure corresponding to a previous pulse, to identify a minimum pulse duration, and applying a pulse having the minimum pulse duration to the fuel pump. 1. A method of operating a fuel pump , comprising:iteratively reducing an on-duration of a low pressure fuel pump pulse, until a peak outlet pressure of the fuel pump decreases from a peak outlet pressure corresponding to a previous pulse, to identify a minimum pulse duration; andapplying a pulse having the minimum pulse duration to the fuel pump.2. The method of claim 1 , wherein applying the pulse having the minimum pulse duration to the fuel pump causes the fuel pump to pump a desired fuel volume.3. The method of claim 1 , wherein the on-duration of the fuel pump pulse is iteratively reduced until a duration for which the fuel pump outputs the peak outlet pressure falls below a threshold.4. The method of claim 1 , further comprising continually applying pulses having the minimum pulse duration to the fuel pump while one or both of an engine load and an engine speed are below respective thresholds.5. The method of claim 4 , further comprising operating the lift pump in a continuous operating mode while one or both of the engine load and the engine speed are equal to or above the respective thresholds.6. The method of claim 1 , wherein the pulse having the minimum pulse duration is applied to the fuel pump responsive to an outlet pressure of the fuel pump falling to a lower threshold pressure.7. The method of claim 1 , wherein the pulse having the minimum pulse duration is applied to the fuel pump responsive to a fuel volume being pumped.8. The method of claim 7 , wherein the fuel volume is less than a desired fuel volume claim 7 , that when pumped by the ...

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Номер записи: 69
02-06-2016 дата публикации

SYSTEMS AND METHODS FOR SENSING FUEL VAPOR PRESSURE

Номер: US20160153384A1
Автор: Kumar Pankaj, Makki Imad Hassan, Pursifull Ross Dykstra, Ulrey Joseph Norman
Принадлежит:

Systems and methods for sensing fuel vapor pressure are provided. In one example, a method for a vehicle comprises: during an engine start after the engine has been off for at least a minimum duration, actively controlling fuel pressure in the fuel system to a vapor-liquid volume ratio greater than zero and then recording sensed fuel pressure and temperature in the fuel system. In this way, the vapor pressure of a fuel at a given temperature may be accurately measured during isothermal conditions, thereby improving an estimation of fuel volatility. 1. A method for a vehicle , comprising:during an engine start after the engine has been off for at least a minimum duration, actively controlling fuel pressure in a fuel system to a vapor-liquid volume ratio greater than zero and then recording sensed fuel pressure and temperature in the fuel system.2. The method of claim 1 , wherein actively controlling the fuel pressure comprises pulsing a fuel pump.3. The method of claim 1 , wherein recording the sensed fuel pressure and temperature is performed responsive to a detection of fuel vapor.4. The method of claim 3 , wherein the detection of fuel vapor comprises sensing a decrease in volumetric efficiency of the fuel pump.5. The method of claim 3 , further comprising actively controlling the fuel pressure after recording and in response to the sensed fuel pressure and temperature.6. The method of claim 1 , further comprising determining fuel volatility based on the recorded sensed fuel pressure and temperature claim 1 , and adjusting engine operation during subsequent engine combustion conditions based on the determined fuel volatility via an engine controller.7. The method of claim 1 , further comprising determining fuel composition based on the recorded sensed fuel pressure and temperature claim 1 , and adjusting engine operation during subsequent engine combustion conditions based on the determined fuel composition via an engine controller.8. The method of claim 1 , ...

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Номер записи: 70
02-06-2016 дата публикации

METHOD FOR LIFT PUMP CONTROL

Номер: US20160153385A1
Автор: Pursifull Ross Dykstra
Принадлежит:

Methods and systems are provided for controlling a low pressure pump in port fuel direct injection (PFDI) engines. One method includes, when operating a high pressure pump in a default pressure mode, pulsing the low pressure pump when pressure in a high pressure fuel rail decreases below a threshold. The method further includes, when operating the high pressure pump in a variable pressure mode, pulsing the low pressure pump based on presence of fuel vapor at an inlet of the high pressure pump. 1. A method , comprising: 'pulsing a low pressure pump when pressure in a high pressure fuel rail decreases below a threshold; and', 'when operating a high pressure pump in a default pressure mode,'} 'pulsing the low pressure pump based on presence of fuel vapor at an inlet of the high pressure pump.', 'when operating the high pressure pump in a variable pressure mode,'}2. The method of claim 1 , wherein an electronically-controlled solenoid valve is deactivated when the high pressure pump is operated in default pressure mode.3. The method of claim 2 , wherein the electronically-controlled solenoid valve is activated when the high pressure pump is operated in variable pressure mode claim 2 , and wherein the pressure in the high pressure fuel rail is regulated via the electronically-controlled solenoid valve.4. The method of claim 1 , wherein pulsing the low pressure pump includes pulsing the low pressure pump at full voltage.5. The method of claim 1 , wherein pulsing the low pressure pump includes pulsing the low pressure pump for short durations.6. The method of claim 1 , further comprising claim 1 , when operating the high pressure pump in variable pressure mode claim 1 , not pulsing the low pressure pump when pressure in the high pressure fuel rail decreases below the threshold.7. The method of claim 1 , wherein when operating the high pressure pump in the variable pressure mode claim 1 , presence of fuel vapor at the inlet of the high pressure pump is determined when an ...

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Номер записи: 71
02-06-2016 дата публикации

Identifying fuel system degradation

Номер: US20160153388A1
Автор: Ethan D. Sanborn, Imad Hassan Makki, Pankaj Kumar, Ross Dykstra Pursifull
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Various methods are thus provided for identifying degradation in a fuel system. In one embodiment, a method of operating a fuel system comprises applying a pulse to a fuel pump responsive to detecting that lift pump pressure corresponds to a fuel vapor pressure, ceasing application of the pulse responsive to detecting that the lift pump pressure corresponds to a relief setpoint pressure, and indicating degradation in the fuel system if the detected lift pump pressure deviates from an expected fuel rail pressure, including distinguishing among degradation in the fuel pump, a lower pressure fuel pressure sensor, a fuel rail pressure sensor, and a pressure relief valve.

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Номер записи: 72
02-06-2016 дата публикации

SYSTEM AND METHOD FOR FUEL INJECTOR ON-TIME CALCULATION USING FUEL SYSTEM PRESSURE PREDICTION

Номер: US20160153389A1
Автор: LANA Carlos A.
Принадлежит:

The disclosure provides a system and method to calculate an actual on-time of a fuel injector. The system may include one or more modules located in a control system. The control system uses information available before the fuel injection signal is transmitted to the fuel injector to model and predict a pressure profile in a fuel system that provides high-pressure fuel to the fuel injector, and uses that information along with a fueling command to calculate an actual on-time for the fuel injector. 1. A fuel assembly for an engine , comprising:a fuel accumulator;at least one fuel injector fluidly coupled to the fuel accumulator, the fuel injector being configured to move between an open position permitting fuel to flow from the fuel injector and a closed position inhibiting fuel flow from the injector, each movement between the open and closed positions defining a fuel injection cycle, and the fuel injector being configured for a plurality of fuel injection cycles; anda control system having a controller operably coupled to the fuel injector, the controller being configured to receive at least one parameter of the fuel assembly, wherein before each of the fuel injection cycles, the controller is configured to adjust an amount of time the fuel injector remains in the open position during each of the fuel injection cycles in response to the parameter.2. The fuel assembly of claim 1 , wherein the control system includes at least one module for predicting a pressure profile of the fuel assembly.3. The fuel assembly of claim 2 , further comprising a fuel pump claim 2 , a fuel pump sensor operably coupled to the fuel pump claim 2 , and a fuel accumulator sensor operably coupled to the fuel accumulator claim 2 , and the at least one module is configured to receive signals from the fuel pump sensor and the fuel accumulator sensor to predict the pressure profile of the fuel assembly.4. The fuel assembly of claim 1 , wherein the at least one parameter includes at least one of ...

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Номер записи: 73
31-05-2018 дата публикации

IDENTIFYING IN-RANGE FUEL PRESSURE SENSOR ERROR

Номер: US20180148037A1
Автор: Pursifull Ross Dykstra, Woodring Christopher Arnold
Принадлежит:

Methods and systems are provided for diagnosing an in-range error of a pressure sensor arranged downstream of a lift pump in a fuel system of a vehicle. In one example, a method may include performing feedback control of the lift pump based on output of the pressure sensor, monitoring the pressure sensor output for flattening during the application of the voltage pulses, and adjusting operation of the fuel system depending on whether the pressure sensor output flattens for at least a threshold duration, which is indicative of an in-range error. The method may further include dynamically learning a setpoint pressure of a pressure relief valve of the fuel system and a fuel vapor pressure within the fuel system by monitoring pressure sensor output while adjusting the duty cycle of voltage pulses applied to the lift pump. 1. A method of operating an engine fuel system , comprising:during pulsed mode operation of a lift pump, adjusting a level of voltage applied to the lift pump based on an output signal of a pressure sensor downstream of the lift pump and monitoring the output signal for flattening;in response to a detection of flattening, indicating a pressure sensor error and operating the lift pump independent of the output signal of the pressure sensor.2. The method of claim 1 , wherein monitoring the output signal for flattening comprises comparing a duration of time during which a slope of the output signal is zero to a threshold duration.3. The method of claim 2 , wherein operating the lift pump independent of the output signal of the pressure sensor comprises operating the lift pump in a continuous mode in which a constant non-zero voltage is applied to the lift pump.4. The method of claim 2 , wherein operating the lift pump independent of the output signal of the pressure sensor comprises operating the lift pump in a pulsed mode in which the level of voltage applied to the lift pump is not adjusted based on the output signal of the pressure sensor.5. The method ...

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Номер записи: 74
31-05-2018 дата публикации

IDENTIFYING IN-RANGE FUEL PRESSURE SENSOR ERROR

Номер: US20180148038A1
Автор: Pursifull Ross Dykstra, Ulrey Joseph Norman, Woodring Christopher Arnold
Принадлежит:

Methods and systems are provided for diagnosing an in-range error of a pressure sensor arranged downstream of a lift pump in a fuel system of a vehicle. In one example, a method may include performing feedback control of the lift pump based on output of the pressure sensor, monitoring the pressure sensor output for flattening during the application of the voltage pulses, and adjusting operation of the fuel system depending on whether the pressure sensor output flattens for at least a threshold duration, which is indicative of an in-range error. The method may further include dynamically learning a setpoint pressure of a pressure relief valve of the fuel system and a fuel vapor pressure within the fuel system by monitoring pressure sensor output while adjusting the duty cycle of voltage pulses applied to the lift pump. 1. A method of operating an engine fuel system , comprising:during pulsed operation of a lift pump, turning the lift pump OFF when a sensed delivery pressure increases to a desired peak pressure or an ON time of the lift pump reaches a calibrated maximum and turning the lift pump ON when either the sensed delivery pressure decreases to a desired trough pressure or a volume of fuel ingested by the engine reaches a predetermined volume.2. The method of claim 1 , further comprising determining the predetermined volume as a function of a difference between the desired peak pressure and the desired trough pressure and a stiffness of the fuel system.3. The method of claim 2 , wherein the predetermined volume is set equal to the quotient of the difference between the desired peak pressure and the desired trough pressure and the stiffness of the fuel system.4. The method of claim 3 , further comprising determining the stiffness of the fuel system as a function of a density of fluid within the fuel system.5. The method of claim 1 , further comprising claim 1 , in response to the ON time of the lift pump reaching the calibrated maximum claim 1 , indicating an in ...

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Номер записи: 75
07-05-2020 дата публикации

EMERGENCY OPERATION METHOD FOR ACTUATING A FUEL PUMP

Номер: US20200141374A1
Автор: Graf Rolf
Принадлежит:

An emergency operation method for actuating a fuel pump after a first temperature threshold for an actuation electronics system of the fuel pump has been exceeded including reducing a power consumption of an electric motor that drives a pump stage by the actuation electronics system by reducing a rotational speed until a monitored temperature value falls below a second temperature threshold below the first temperature threshold. Emergency operation method is initiated after the first temperature threshold is exceeded by a fault signal output by the actuation electronics system to an engine control unit is communicatively connected to the actuation electronics system. The fault signal, as long as it is output, is used to suppress a specification for the rotational speed of the electric motor on the part of the engine control unit and instead to specify the rotational speed by way of the actuation electronics system. 111-. (canceled)12. An emergency operation method to actuate a fuel pump , comprising:monitoring a temperature value of an actuation electronics system for the fuel pump;determining if a first temperature threshold of the actuation electronics system of the fuel pump has been exceeded;initiating the emergency operation method after the first temperature threshold is exceeded by outputting a fault signal by the actuation electronics system to an engine control unit of an internal combustion engine, which engine control unit is communicatively connected to the actuation electronics system; andreducing a power consumption of an electric motor that drives a pump stage by the actuation electronics system by reducing a rotational speed of the electric motor until the monitored temperature value falls below a second temperature threshold, which is below the first temperature threshold, after the emergency operation method is initiated;supressing a specification for the rotational speed of the electric motor by the engine control unit due to the fault signal, as ...

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Номер записи: 76
11-06-2015 дата публикации

ADAPTIVE LEARNING OF DUTY CYCLE FOR A HIGH PRESSURE FUEL PUMP

Номер: US20150159576A1
Автор: Basmaji Joseph F., Meinhart Mark, Pursifull Ross Dykstra, Surnilla Gopichandra, ZHANG Hao
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Methods and systems are provided for closed loop operation of a high pressure fuel pump connected to the direct injectors of an internal combustion engine. During operation of the high pressure pump a dead zone may exist where a substantial change in the pump duty cycle does not correspond to a substantial change in the fuel rail pressure. To operate outside the dead zone, a relationship between the pump duty cycle and fuel rail pressure is learned upon completion of several pump and engine conditions, thereby improving high pressure pump operation and reducing pump degradation. 1. A method , comprising:decreasing fuel rail pressure below a threshold; thenwhile not direct injecting fuel into an engine, learning a dead zone for a high pressure fuel pump based on a change in pump duty cycle relative to a resulting change in fuel rail pressure; andwhile direct injecting fuel into the engine, adjusting the pump duty cycle to stay above the learned dead zone.2. The method of claim 1 , wherein the direct injecting fuel into the engine occurs during closed loop control of the fuel rail pressure.3. The method of claim 2 , wherein learning the dead zone based on the change in pump duty cycle relative to the resulting change in fuel rail pressure includes:commanding a first duty cycle and determining a first fuel rail pressure;then commanding a second, higher duty cycle and determining a second fuel rail pressure; andlearning the dead zone based on a difference between the first and second fuel rail pressure relative to a difference between the commanded first and second duty cycles.4. The method of claim 1 , wherein the high pressure fuel pump is coupled to a direct fuel injector of the engine claim 1 , the engine further including a port fuel injector coupled to a low pressure fuel pump claim 1 , and wherein not direct injecting fuel into the engine includes only port injecting fuel into the engine.5. The method of claim 1 , wherein the high pressure fuel pump is coupled to ...

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Номер записи: 77
11-06-2015 дата публикации

FUEL SUPPLY SYSTEM

Номер: US20150159577A1
Автор: AKITA Minoru, TAGAWA Naoyuki
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

A fuel supply system for an internal combustion engine has a fuel pump capable of pumping fuel from a fuel tank to the internal combustion engine, a motor driving the fuel pump, a pressure sensor configured to detect pressure of the fuel pumped from the fuel pump, and a control unit configured to output control signals to the motor. The control unit is configured to perform feedback control of duty ratio of the control signals for the motor, and to control the duty lower limit guard value in order to limit an amount of decreases of the duty lower limit guard value in the step-like manner when a duty lower limit guard value decreases. 1. A fuel supply system for an internal combustion engine , comprising:a fuel pump capable of pumping fuel from a fuel tank to the internal combustion engine;a motor driving the fuel pump;a pressure sensor configured to detect pressure of the fuel pumped from the fuel pump; anda control unit configured to output control signals to the motor, to perform feedback control of duty ratio of the control signals for the motor such that the pressure of the pumped fuel comes close to a predetermined target fuel pressure, to receive information relating to pressure of the fuel discharged from the fuel pump and information relating to an operating condition of the internal combustion engine, to calculate the duty ratio of the control signals such that discharge fuel pressure based on the information relating to the pressure of the fuel discharged from the fuel pump comes close to the predetermined target fuel pressure, to output control signals corresponding to the calculated duty ratio to the motor, to calculate duty lower limit guard value depending on the operating condition of the internal combustion engine based on the information relating to the operating condition of the internal combustion engine, to guard the lower limit value of the duty ratio with the duty lower limit guard value when outputting the control signals corresponding to the ...

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Номер записи: 78
01-06-2017 дата публикации

Fuel System with a Fuel Pump Control Module and a Heat Sink

Номер: US20170152823A1
Автор: Dorado Ricardo R., Hiner Gary A., McGrew Jeffrey L., MCHALE MICHAEL J., Quiroz Raul I., Vas Timothy A.
Принадлежит:

A fuel system for an internal combustion engine includes an electric fuel pump; a conduit which defines a flow path through which fuel flows from the electric fuel pump to the internal combustion engine; a fuel pump control module with electronics which drive the electric fuel pump, the fuel pump control module being disposed within a compartment defined by a wall; and a heat sink in thermal contact with the fuel pump control module and extending out of the compartment through an aperture of the wall and into the flow path such that the heat sink is sealed to the wall, thereby preventing fluid communication through the aperture. 1. A fuel system for an internal combustion engine , said fuel system comprising:an electric fuel pump;a conduit which defines a flow path through which fuel flows from said electric fuel pump to said internal combustion engine;a fuel pump control module with electronics which drive said electric fuel pump, said fuel pump control module being disposed within a compartment defined by a wall; anda heat sink in thermal contact with said fuel pump control module and extending out of said compartment through an aperture of said wall and into said flow path such that said heat sink is sealed to said wall, thereby preventing fluid communication through said aperture.2. A fuel system as in further comprising:a fuel tank configured to hold a volume of fuel to be pumped by said electric fuel pump, said electric fuel pump being disposed within said fuel tank, and said fuel tank having a fuel tank opening therein which accommodates insertion of said electric fuel pump within said fuel tank; anda cover which closes off said fuel tank opening;wherein said cover defines said wall.3. A fuel system as in wherein said heat sink includes a main body such that the circumference of said main body is in intimate claim 1 , uninterrupted circumferential contact with said aperture claim 1 , thereby preventing fluid communication through said aperture.4. A fuel ...

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Номер записи: 79
09-06-2016 дата публикации

DIRECT INJECTION PUMP CONTROL

Номер: US20160160790A1
Автор: Pursifull Ross Dykstra
Принадлежит:

Methods are provided for controlling a solenoid spill valve of a direct injection fuel pump, wherein the solenoid spill valve is energized and de-energized according to certain conditions. An example control strategy is provided for operating the direct injection fuel pump when fuel vapor is detected at an inlet of the direct injection fuel pump. To ensure pump effectiveness during the presence of fuel vapor, the solenoid spill valve may be maintained energized for a minimum angular duration past a top-dead-center position of a piston in the direct injection fuel pump. 1. A method , comprising:energizing a solenoid spill valve of a direct injection fuel pump for an angle past top center of a piston in the direct injection fuel pump in response to fuel vapor detected at an inlet of the direct injection fuel pump.2. The method of claim 1 , wherein fuel vapor is detected based on fuel capacitance.3. The method of claim 2 , wherein the fuel capacitance is measured via a fuel composition sensor positioned downstream of a lift pump and upstream of the direct injection fuel pump claim 2 , the lift pump supplying fuel to the direct injection fuel pump.4. The method of claim 1 , wherein the fuel vapor is detected based on a difference between a commanded fuel amount and an actual fuel amount pumped; and wherein the actual fuel amount pumped is based on a FRP change and a fuel injection amount over a period.5. The method of claim 1 , wherein the solenoid spill valve is maintained energized until after a top-dead-center position of the piston is reached.6. The method of claim 1 , wherein energizing the solenoid spill valve includes sending signals to the solenoid spill valve from a controller.7. The method of claim 6 , wherein the controller further detects angular position of a driving cam that powers the direct injection fuel pump in order to synchronize energizing the solenoid spill valve.8. The method of claim 1 , further comprising claim 1 , when fuel vapor is not ...

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Номер записи: 80
07-06-2018 дата публикации

Control device for high-pressure pump

Номер: US20180156152A1
Автор: Hiroshi Yamaguchi, Takahisa Natori, Tomoyuki Takagawa, Yasuo Hirata
Принадлежит: Denso Corp

A control device for a high-pressure pump includes: a determination unit, an acquisition unit, and an electric power setting unit. The determination unit determines whether a movable portion of an electromagnetic valve has been moved to a closed position to close the electromagnetic valve when the electromagnetic valve is energized. The acquisition unit acquires, as an electromagnetic-valve response time, a period of time from a start of the energization of the electromagnetic valve until when it is determined that the electromagnetic valve has been closed. The electric power setting unit sets a supply power to the electromagnetic valve by repeating a process in which the supply power to the electromagnetic valve is reduced so as to be smaller than a previous value until the electromagnetic-valve response time reaches a predefined upper limit value.

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Номер записи: 81
14-05-2020 дата публикации

VEHICLE SAFETY DEVICE FOR ENGINE SHUT-OFF AND EMERGENCY ASSISTANCE

Номер: US20200149489A1
Автор: Clark Carl M., Lynn Randall S.
Принадлежит:

A vehicle safety device for detecting vehicle tilt automatically shuts-off power to an ignition system and fuel pump and summons emergency assistance using a bistable switch circuit that toggles between a first bistable switch position in response to a reset signal and a second bistable switch position in response to an alert signal. The safety device can remain in the bistable switch positions without a power source and employ an encrypted bi-directional protocol to summon emergency assistance and generate the reset signal without vehicle operator intervention. 1. A vehicle safety device , comprising:a tilt sensor that generates an alert signal in response to vehicle tilt; and selectively connect a power source to an ignition system and a fuel pump in the first bistable switch position in response to a reset signal; and', 'selectively disconnect the power source from the ignition system and the fuel pump and generate a notification signal in the second bistable switch position in response to the alert signal to shut off the engine and summon emergency assistance at a remote location., 'a bistable switch circuit that toggles between a first bistable switch position and a second bistable switch position to2. The device of claim 1 , wherein the bistable switch circuit includes:a relay switch that connects the power source at an input to the ignition system and the fuel pump at a first output and disconnects the power source from a notification signal line at a second output in response to the reset signal and selectively disconnects the power source from the ignition system and the fuel pump and connects the power source to the notification signal line in response to the alert signal.3. The device of claim 1 , where n the bistable switch circuit includes:a first relay switch that connects the power source to the ignition system and the fuel pump in response to the reset signal and disconnects the power source from the ignition system and the fuel pump in response to ...

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Номер записи: 82
14-06-2018 дата публикации

METHOD OF IMPROVING ENGINE STARTABILITY USING HARDWARE WAKE-UP PERIOD CONTROL AND VEHICLE USING THE SAME

Номер: US20180163655A1
Автор: KOO Bon-Chang
Принадлежит:

Disclosed herein is a vehicle having improved engine startability using hardware wake-up period control by performing a vehicle state detection mode to which a battery voltage, an engine oil temperature, and an engine coolant temperature are applied by a controller in a key-off state of an engine, a wake-up fuel pressure control mode for determining whether a soaking time reaches a wake-up set time by the count of a key-off timer for 80 minutes, a pump operation control mode for operating a low-pressure fuel pump for approximately 1 second by the current supplied in response to a key-off output signal over the period of 80 minutes, and a wake-up repetition control mode for repeating a number of times the low-pressure fuel pump is operated to maximum 6 times. 1. A method of improving engine startability , comprising:performing a vehicle state detection mode in which a battery voltage detection value, an engine oil temperature detection value, and an engine coolant temperature detection value are read by a controller in a key-off state of an engine, a soaking time is stored, and a count of a key-off timer is initiated;performing a wake-up fuel pressure control mode in which when each of the battery voltage detection value, the engine oil temperature detection value, and the engine coolant temperature detection value satisfies a set condition, whether the soaking time reaches a wake-up set time is determined by the count of the key-off timer;performing a pump operation control mode in which key-off output is sent in response to a signal of the key-off timer when the soaking time reaches the wake-up set time, and after a low-pressure fuel pump is operated by a current supplied thereto for a time at which the key-off output is maintained, the operation of the low-pressure fuel pump is configured to be stopped by cut-off of the key-off output; andperforming a wake-up repetition control mode in which a number of times the low-pressure fuel pump is operated is counted as 1, ...

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Номер записи: 83
15-06-2017 дата публикации

METHOD AND SYSTEM FOR CONTROLLING MOTOR OF FUEL PUMP

Номер: US20170167426A1
Автор: Jang Sang Hyun, Kim Sun Woo, LEE Hee Jun
Принадлежит:

A method for controlling a motor of a vehicle fuel pump includes a duty calculation step of calculating, by a motor controller, a duty value of the motor to satisfy a hydraulic pressure of fuel required in accordance with a travel situation of the vehicle, receiving the duty value calculated by the motor controller at the duty calculation step, and determining, by the monitoring unit, whether or not the received duty value is lower than a critical value set in the monitoring unit, and a forced driving step of preventing, by the monitoring unit, a duty value signal from the motor controller from being sent to the motor and directly connecting the motor to a power source, thereby forcibly driving the motor to generate power at a predetermined level when the monitoring unit determines that the duty value calculated by the motor controller is lower than the critical value. 1. A method for controlling a motor of a vehicle fuel pump comprising:a duty calculation step of calculating, by a motor controller, a duty value of the motor to satisfy a hydraulic pressure of fuel required in accordance with a travel situation of the vehicle;a critical state determination step of receiving, by a monitoring unit, the duty value calculated by the motor controller at the duty calculation step, and determining, by the monitoring unit, whether or not the received duty value is lower than a critical value set in the monitoring unit; anda forced driving step of preventing, by the monitoring unit, a duty value signal from the motor controller from being sent to the motor and directly connecting the motor to a power source, by the monitoring unit, thereby forcibly driving the motor to generate power at a predetermined level when the monitoring unit determines at the critical state determination step that the duty value calculated by the motor controller is lower than the critical value.2. The method according to claim 1 , further comprising:a motor driving step of sending the duty value ...

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Номер записи: 84
15-06-2017 дата публикации

FUEL SUPPLY SYSTEM, MARINE PROPULSION DEVICE AND OUTBOARD MOTOR

Номер: US20170167427A1
Автор: KADOBAYASHI Yoshiyuki
Принадлежит:

A fuel supply system includes a sub fuel tank, a booster pump, a fuel pipe, a fuel pressure sensor and a controller. The sub fuel tank stores a fuel supplied thereto from a main fuel tank. The booster pump is disposed inside the sub fuel tank. The fuel pipe has a returnless structure and supplies the fuel with a pressure increased by the booster pump to a fuel injection device of an engine. The fuel pressure sensor detects the pressure of the fuel inside the fuel pipe. The controller is configured or programmed to perform a feedback control of the booster pump based on a value of the pressure of the fuel detected by the fuel pressure sensor such that the pressure of the fuel inside the fuel pipe becomes greater than or equal to a first threshold. 1. A fuel supply system comprising;a sub fuel tank that stores a fuel supplied thereto from a main fuel tank;a booster pump disposed inside the sub fuel tank;a fuel pipe with a returnless structure, the fuel pipe supplying the fuel with a pressure increased by the booster pump to a fuel injection device of an engine;a fuel pressure sensor that detects a pressure of the fuel inside the fuel pipe; anda controller configured or programmed to perform a feedback control of the booster pump based on a value of the pressure of the fuel detected by the fuel pressure sensor such that the pressure of the fuel inside the fuel pipe becomes greater than or equal to a first threshold.2. The fuel supply system according to claim 1 , wherein the sub fuel tank is not provided with a return pipe connected thereto.3. The fuel supply system according to claim 1 , wherein the fuel injection device is not provided with a return pipe connected thereto.4. The fuel supply system according to claim 1 , wherein all of the fuel to be discharged from the sub fuel tank to the fuel pipe is discharged outside of the fuel pipe from the fuel injection device.5. The fuel supply system according to claim 1 , wherein the controller is configured or programmed ...

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Номер записи: 85
21-05-2020 дата публикации

SECURED BACKUP FEATURE FOR AN EMBEDDED SYSTEM

Номер: US20200156805A1
Автор: Andrus Dawn Kay, Bitz Daniel John, Skertic Richard Joseph
Принадлежит:

A system is described that includes a controllable component of an engine configured to regulate fuel flow to the engine, a digital control unit configured to control the engine by at least communicating with the controllable component of the engine, and a protection component configured to disable communication between the digital control unit and the controllable component of the engine. The system further includes an analog control unit configured to control the engine by at least communicating with the controllable component of the engine in response to the protection component disabling communication between the digital control unit and the controllable component of the engine. 1. A system comprising:a controllable component of an engine configured to regulate fuel flow to the engine;a digital control unit configured to control the engine by at least communicating with the controllable component of the engine;a protection component configured to disable communication between the digital control unit and the controllable component of the engine; andan analog control unit configured to control the engine by at least communicating with the controllable component of the engine in response to the protection component disabling communication between the digital control unit and the controllable component of the engine.2. The system of claim 1 , wherein the protection component is configured to disable communication between the digital control unit and the controllable component of the engine by irreversibly disabling an electric interface between the digital control unit and the controllable component of the engine.3. The system of claim 1 , wherein the protection component is further configured to enable communication between the analog control unit and the controllable component of the engine while disabling communication between the digital control unit and the controllable component of the engine.4. The system of claim 3 , wherein the protection component is ...

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Номер записи: 86
30-05-2019 дата публикации

FUEL PUMP CONTROLLER AND CONTROL METHOD FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20190162132A1
Автор: IDOGAWA Masanao, MURAKAMI Narumi, SUGIMOTO Motohiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An electronic control unit is configured to switch a drive mode of a first high-pressure fuel pump and a second high-pressure fuel pump, in accordance with an operating state of an internal combustion engine, either to a twin-drive mode, in which both the first high-pressure fuel pump and the second high-pressure fuel pump are driven, or to a single-drive mode, in which either one of the first high-pressure fuel pump and the second high-pressure fuel pump is driven. The electronic control unit is configured to determine whether or not a pump ambient temperature, which is the ambient temperature of the first high-pressure fuel pump and the second high-pressure fuel pump, is equal to or higher than a predetermined first temperature. In a case where the pump ambient temperature is equal to or higher than the first temperature, the electronic control unit turns ON a twin-drive mode request flag. 1. A fuel pump controller adapted for an internal combustion engine , wherein a first fuel pump configured to discharge fuel by increasing pressure,', 'a first fuel passage, through which the fuel discharged by the first fuel pump flows,', 'a first fuel injection valve configured to inject the fuel supplied from the first fuel passage,', 'a second fuel pump configured to discharge fuel by increasing pressure,', 'a second fuel passage, through which the fuel discharged by the second fuel pump flows,', 'a second fuel injection valve configured to inject the fuel supplied from the second fuel passage,', 'a connecting passage, which connects the first fuel passage and the second fuel passage to each other, and', 'a temperature sensor configured to detect an ambient temperature of the first fuel pump or the second fuel pump, wherein, 'the internal combustion engine includes'}the fuel pump controller comprises a pump switching unit configured to switch a drive mode of the first fuel pump and the second fuel pump, in accordance with an operating state of the internal combustion engine, ...

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Номер записи: 87
21-05-2020 дата публикации

ENGINE SYSTEM

Номер: US20200158067A1
Автор: Fukumoto Wataru, Nakada Yasuhiro, SHIBATA Kenji
Принадлежит:

The present invention provides a batteryless engine system comprising a first detection unit configured to detect a rotation speed of an internal combustion engine, a second detection unit configured to detect a voltage of a capacitor in which charges are accumulated, and a control unit operated by a power supplied from a generator and configured to control supply of a power from the generator to an injector, a fuel pump, and an ignition device based on the rotation speed detected by the first detection unit and the voltage detected by the second detection unit in a starting period of the internal combustion engine by a recoil starter. 1. A batteryless engine system comprising:an internal combustion engine;a fuel tank configured to store fuel of the internal combustion engine;a generator configured to be driven by the internal combustion engine and generate power;a recoil starter configured to start the internal combustion engine;a capacitor configured to accumulate charges generated by the power generation;a first detection unit configured to detect a rotation speed of the internal combustion engine;a second detection unit configured to detect a voltage of the capacitor in which the charges are accumulated;an injector operated by the power supplied from the generator and configured to supply the fuel to the internal combustion engine;a fuel pump operated by the power supplied from the generator and configured to supply the fuel stored in the fuel tank to the injector;an ignition device operated by the power supplied from the generator and configured to ignite the fuel compressed by the internal combustion engine; anda control unit operated by the power supplied from the generator and configured to control supply of the power from the generator to the injector, the fuel pump, and the ignition device based on the rotation speed detected by the first detection unit and the voltage detected by the second detection unit in a starting period of the internal combustion ...

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Номер записи: 88
23-06-2016 дата публикации

METHOD FOR DIRECT INJECTION OF SUPERCRITICAL FUELS

Номер: US20160177860A1
Автор: Kramer Ulrich, Pursifull Ross Dykstra
Принадлежит:

Methods are provided for improving delivery of supercritical fuels via a direct injector. An injector control parameter is adjusted based on one of a fuel pump gain, an injected fuel mass, or a change in pressure in the fuel rail, and the engine operates the injector based on the adjusted parameter. Injector control parameters are only adjusted when fluid is subcritical at the fuel pump and when injector overlap is not present. 1. A method for a fuel system , comprising:adjusting a fuel injector control parameter based on an exhaust air-fuel ratio;selectively adjusting the fuel injector control parameter further based on a fuel pump gain; andoperating a fuel injector based on the fuel injector control parameter.2. The method of claim 1 , wherein the fuel injector control parameter is applied to a direct fuel injector and wherein the fuel pump gain is of a direct fuel injector pump.3. The method of claim 1 , wherein the fuel is LPG.4. The method of claim 1 , wherein the selective adjusting includes:adjusting the fuel injector control parameter further based on the fuel pump gain in response to a determination that the fuel is subcritical at the fuel pump; andnot adjusting the fuel injector control parameter further based on the fuel pump gain in response to a determination that the fuel is supercritical at the fuel pump.5. The method of claim 1 , wherein the gain of the fuel pump is estimated a number of times and wherein the fuel injector control parameter is adjusted further based on an average of the estimated gain of the fuel pump.6. The method of claim 1 , wherein the fuel injector control parameter controls an injection pulsewidth.7. The method of claim 1 , wherein the fuel pump gain is a slope of a fuel rail pressure rise versus a commanded pumping volume.8. The method of claim 6 , wherein the adjusting further based on the fuel pump gain includes:as the fuel pump gain decreases, increasing the fuel injector control parameter; andas the fuel pump gain ...

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Номер записи: 89
21-06-2018 дата публикации

CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

Номер: US20180171927A1
Автор: NAGATA Tetsuji, SUDA Toru, TACHIBANA Rintarou
Принадлежит:

A controller of a control device of an internal combustion engine includes: a storage configured to store fuel pressure detected during injection of one port injection valve of port injection valves in association with another port injection valve, of the port injection valves, scheduled to inject fuel after one or two cycles of the fuel pressure pulsation elapsing from injection of the one port injection valve; and a calculator configured to calculate an energization period of the another port injection valve based on the stored fuel pressure. 1. A control device of an internal combustion engine comprising:cylinder injection valves that respectively inject fuel into cylinders of the internal combustion engine;port injection valves that respectively inject fuel toward intake ports of the internal combustion engine;a feed pump that pressurizes fuel;a low pressure fuel passage that supplies fuel pressurized by the feed pump to the port injection valves;a high pressure pump that further pressurizes fuel supplied from the low pressure fuel passage;a high pressure fuel passage that branches off from the low pressure fuel passage and supplies fuel pressurized by the high pressure pump to the cylinder injection valves;a fuel pressure sensor that detects fuel pressure in the low pressure fuel passage;a crank angle sensor that detects a rotational angle of a crankshaft of the internal combustion engine; anda controller configured to calculate each energization period of the port injection valves corresponding to required injection quantity and to energize the port injection valves in an order at a predetermined crank angle interval only for the calculated energization period,whereinthe high pressure pump is driven in conjunction with the crankshaft and generates fuel pressure pulsation in the low pressure fuel passage, and a storage configured to store fuel pressure detected during injection of one port injection valve of the port injection valves in association with another ...

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Номер записи: 90
06-06-2019 дата публикации

CONTROL DEVICE OF FUEL PUMP

Номер: US20190170079A1
Автор: Kawamura Kazunori, Kobayashi Akira, Kobayashi Kazuhiro, SASAKI Shoji
Принадлежит: HONDA MOTOR CO., LTD.

In the communication interruption state in which the transmission of a drive control command value DUTY from an engine control unit (ECU) to a fuel pump driver (FPD) is disabled, the FPD is configured so as to drive a fuel pump by using the maximum command value DTYMAX (100%) as a drive control command value DUTY. A stop state of the fuel pump is maintained even if the drive control command value DUTY is the maximum command value DTYMAX when an ignition switch is in the OFF State so as to have stopped the fuel pump , while the fuel pump is driven when the ignition switch is in the ON state and the drive control command value DUTY is the maximum command value DTYMAX. 1. A control device of a fuel pump for supplying fuel from a fuel tank to an internal combustion engine , the control device comprising:a fuel pump driver configured to control supply of electrical power to the fuel pump for driving the fuel pump; and start and drive the fuel pump when an ignition switch configured to switch connection and disconnection of an electrical power source to the engine control unit is in an ON state and stop the fuel pump when the ignition switch is in an OFF state, thereby controlling the engine, and', 'generate a drive control command value which is transmitted to the fuel pump driver such that operation of the fuel pump is controlled by the fuel pump driver based on the transmitted drive control command value,, 'an engine control unit configured to'}wherein the fuel pump driver is configured to drive the fuel pump by using a specific drive command value preset as the drive control command value when a communication interruption state in which transmission of the drive control command value is interrupted is detected, andwherein the stop state of the fuel pump is maintained even when the ignition switch is in the OFF state and the drive control command value is set to the specific drive command value, and the fuel pump is driven when the ignition switch is in the ON state ...

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Номер записи: 91
08-07-2021 дата публикации

FUEL PUMP CONTROL SYSTEM AND METHOD FOR DETECTING INDICATION OF ABNORMALITY IN FUEL PUMP

Номер: US20210207552A1
Автор: HIDAKA Yuuji, NAKANO Tomoaki, TOYODA Hirokazu
Принадлежит:

A pump control unit controls a fuel pump based on a control target value of an engine. A pump characteristic detection unit acquires a pump characteristic value among pump characteristic values, which indicate an operating state of a fuel pump and include a supplied current to the fuel pump, an applied voltage to the fuel pump, a generated voltage of the fuel pump, and a rotation speed of the fuel pump. A pump characteristic storage unit stores the acquired pump characteristic value together with the control target value. A determination threshold set unit sets a determination threshold value by using at least one of the stored pump characteristic value, the control target value, and a combination of at least two of the control target values. A fuel pump deterioration determination unit determines deterioration of the fuel pump by using the stored pump characteristic value and the determination threshold value. 1. A fuel pump control system comprising:a fuel pump configured to supply fuel from a fuel tank to an internal combustion engine;a pump control unit configured to control the fuel pump based on a control target value of at least one target item of the internal combustion engine;a pump characteristic detection unit configured to acquire a pump characteristic value, which is required to determine deterioration of the fuel pump, among pump characteristic values, which indicate an operating state of the fuel pump and include a supplied current to the fuel pump, an applied voltage to the fuel pump, a generated voltage of the fuel pump, and a rotation speed of the fuel pump;a pump characteristic storage unit configured to store, together with the control target value, the pump characteristic value acquired by the pump characteristic detection unit;a determination threshold set unit configured to set a determination threshold value, which is for determining deterioration of the fuel pump, by using at least one of the stored pump characteristic value, the control ...

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Номер записи: 92
30-06-2016 дата публикации

ZERO FLOW LUBRICATION FOR A HIGH PRESSURE FUEL PUMP

Номер: US20160186682A1
Автор: Meinhart Mark, Surnilla Gopichandra, ZHANG Hao
Принадлежит:

Methods and systems are providing for improving zero flow lubrication (ZFL) of a high pressure fuel pump coupled to direct fuel injectors via a direct injection fuel rail. A ZFL transfer function for the fuel pump is learned while fuel is at non-nominal fuel bulk modulus conditions and corrected for variations from a nominal fuel bulk modulus estimate. When zero flow lubrication of the pump is requested, the pump is operated with a duty cycle based on the learned transfer function and an instantaneous estimate of the fuel bulk modulus to compensate for differences in fuel condition from the nominal fuel bulk modulus estimate. 1. A method for a fuel system , comprising:learning a transfer function between duty cycle for a high pressure fuel pump and fuel rail pressure for a direct fuel injector for nominal bulk modulus conditions; andduring conditions when not direct injecting fuel into an engine, operating the fuel pump with a duty cycle based on the learned transfer function and an instantaneous bulk modulus estimate.2. The method of claim 1 , wherein the instantaneous bulk modulus estimate is based on fuel conditions including one or more of fuel temperature claim 1 , fuel pressure claim 1 , and fuel composition.3. The method of claim 2 , wherein the fuel composition includes a fuel alcohol content.4. The method of claim 1 , wherein the transfer function includes an affine relationship.5. The method of claim 1 , wherein the operating includes operating the fuel pump with a duty cycle based on an updated transfer function claim 1 , the updated transfer function including the learned transfer function adjusted with a correction factor claim 1 , the correction factor based on the instantaneous bulk modulus estimate relative to the nominal bulk modulus.6. The method of claim 1 , wherein the direct fuel injector is coupled to the high pressure fuel pump claim 1 , and wherein the engine further includes a port fuel injector claim 1 , and wherein during the conditions ...

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Номер записи: 93
13-06-2019 дата публикации

Control device and control method for fuel pump

Номер: US20190178197A1
Автор: Seiji Okamura
Принадлежит: Toyota Motor Corp

A control device for a motor-driven fuel pump adapted for an internal combustion engine is provided. The fuel pump includes a cylinder, a mover in the cylinder, and an electric actuator configured to move the mover. The control device is configured to perform energization control on the electric actuator to reciprocate the mover so that the fuel pump draws in and discharges fuel. The control device is also configured to control a discharge count and a unit discharge amount based on an operating state of the internal combustion engine. The discharge count is a number of times of discharging fuel from the fuel pump to the fuel pipe during a period between a fuel injection from the fuel injection valve and the next fuel injection, and the unit discharge amount is an amount of fuel for one fuel discharge from the fuel pump.

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Номер записи: 94
13-06-2019 дата публикации

Control device for fuel pump and control method thereof

Номер: US20190178198A1
Автор: Seiji Okamura
Принадлежит: Toyota Motor Corp

A control device for an fuel pump includes an electronic control unit. The fuel pump is an electric fuel pump configured to supply fuel to a fuel pipe to which a fuel injection valve disposed within a cylinder of an engine is coupled. The electronic control unit executes an inter-injection discharge control of executing fuel discharge from the fuel pump at a predetermined timing between an Nth fuel injection and an (N+1)th fuel injection from the fuel injection valve. The electronic control unit changes a discharge ratio in accordance with an operational state of the internal combustion engine during the execution of the inter-injection discharge control. The discharge ratio is a ratio of the number of times of fuel discharge from the high-pressure fuel pump to the number of times of fuel injection from the fuel injection valve.

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Номер записи: 95
13-06-2019 дата публикации

SYSTEMS AND METHODS FOR PERFORMING PROGNOSIS OF FUEL DELIVERY SYSTEMS USING SOLENOID CURRENT FEEDBACK

Номер: US20190178215A1
Автор: Lu Xiangxing, Mehdi Syed B., Sankavaram Chaitanya, Sarwar Azeem
Принадлежит:

An engine fuel delivery system, prognosis system, and method of conducting a fuel pump solenoid prognosis are provided. The engine fuel delivery system includes a fuel pump having a pumping chamber, a closeable inlet valve (such as a fuel pump control solenoid), and a fuel rail to communicate pressurized fuel received from the fuel pump to at least one engine cylinder. The engine fuel delivery system, prognosis system, and method are configured to determine a solenoid current feedback of a fuel pump control solenoid and a variation in the feedback. The fuel delivery system, prognosis system, and method are further configured to indicate a potential solenoid electrical connection fault if the solenoid current feedback is less than a predetermined current threshold and less than a predetermined variation threshold, and to indicate a potential solenoid weakened electromagnetic field fault if the solenoid current feedback is greater than the predetermined variation threshold. 1. A method of conducting a fuel pump solenoid prognosis , the method comprising:determining a solenoid current feedback of a fuel pump control solenoid;determining whether the solenoid current feedback is less than a predetermined low current threshold;determining a magnitude of variation of the solenoid current feedback;determining whether the magnitude of variation of the solenoid current feedback exceeds a predetermined variation threshold;indicating a potential solenoid electrical connection fault if the solenoid current feedback is less than the predetermined low current threshold and less than the predetermined variation threshold; andindicating a potential solenoid weakened electromagnetic field fault if the solenoid current feedback is greater than the predetermined variation threshold.2. The method of claim 1 , wherein the step of determining a solenoid current feedback includes determining a mean of the solenoid current feedback claim 1 , the method further comprising:determining whether ...

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Номер записи: 96
04-06-2020 дата публикации

Evaporation gas active purge system and active purge method

Номер: US20200173383A1
Автор: Young-Kyu OH
Принадлежит: Hyundai Motor Co, Kia Motors Corp

An evaporation gas active purge system may include a purge line of connecting a canister for absorbing an evaporation gas of a fuel tank to an intake pipe; a purge pump mounted on the purge line; a purge valve mounted on the purge line to be disposed between the purge pump and the intake pipe; a pressure sensor mounted on the purge line to be disposed between the purge pump and the purge valve; and a control unit of receiving a signal from the pressure sensor, and transmitting an operating signal to the purge pump and the purge valve, wherein the control unit controls the purge pump and the purge valve by an engine condition and a vehicle speed.

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Номер записи: 97
12-07-2018 дата публикации

FUEL SYSTEM HAVING PUMP PROGNOSTIC FUNCTIONALITY

Номер: US20180195458A1
Автор: BASHORE Bradley Scott, MARCHIONDA Michael Scott, Nellutla Kranti Kumar, Puckett Daniel Reese, Rayasam Sasidhar, SATTLER Michael Edward
Принадлежит: CATERPILLAR INC.

A fuel system is disclosed for use with an engine. The fuel system may have a plurality of fuel injectors, a common rail fluidly, a pump, and an outlet valve associated with the pump. The fuel system may also have a sensor configured to generate a signal indicative of a pressure of fuel in the common rail, and an electronic control module. The electronic control module may be configured to detect a zero-fueling condition, to determine a first pressure decay rate of the common rail during the zero-fueling condition while the pump is rotating, and to determine a second pressure decay rate of the common rail during the zero-fueling condition after the pump has stopped rotating. The electronic control module may also be configured to selectively generate a diagnostic flag associated with wear of the outlet valve based on the first and second pressure decay rates. 1. A fuel system for an engine , comprising:a plurality of fuel injectors;a common rail fluidly connected to the plurality of fuel injectors;a pump configured to pressurize the common rail;an outlet valve associated with the pump;a sensor configured to generate a signal indicative of a pressure of fuel in the common rail; and detect a zero-fueling condition;', 'determine a first pressure decay rate of the common rail during the zero-fueling condition while the pump is rotating;', 'determine a second pressure decay rate of the common rail during the zero-fueling condition after the pump has stopped rotating; and', 'selectively generate a diagnostic flag associated with wear of the outlet valve based on the first and second pressure decay rates., 'an electronic control module in communication with the sensor and configured to2. The fuel system of claim 1 , wherein the electronic control module is further configured to:determine a third pressure decay rate of the common rail during the zero-fueling condition after the pump has stopped rotating; andselectively generate the diagnostic flag associated with wear of ...

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Номер записи: 98
12-07-2018 дата публикации

ENGINE SYSTEM AND CONTROL METHOD FOR ENGINE SYSTEM

Номер: US20180195459A1
Автор: Ando Daigo, Genko Takeshi, Kondo Shinya, NISHIGAKI Takahiro, WATANABE Chisa
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An engine system includes an engine that, a fuel supply device, and an electronic control unit. The electronic control unit is configured to control the fuel supply device and to perform operation control of the engine by adjusting an injection ratio between fuel injection from an in-cylinder injection valve and a port injection valve according to the operation state of the engine. The electronic control unit is configured to perform imbalance determination. The electronic control unit is configured to change a region of fuel injection from a first fuel injection region to a second fuel injection region when the electronic control unit determines that a lean imbalance is occurred with respect to the fuel injection in which the fuel injection from the port injection valve is performed. 1. An engine system comprising:an engine having a plurality of cylinders, the engine including an in-cylinder injection valve and a port injection valve, the in-cylinder injection valve being configured to inject fuel into each cylinder of the engine, and the port injection valve being configured to inject fuel into an intake port of the engine;a fuel supply device including a first pump and a second pump, the first pump being configured to apply a pressure to fuel from a fuel tank such that the fuel is supplied to a first supply flow path to which the port injection valve is connected, and the second pump being configured to apply a pressure to the fuel in the first supply flow path such that the fuel is supplied to a second supply flow path to which the in-cylinder injection valve is connected; andan electronic control unit configured to control the fuel supply device and to perform operation control of the engine by adjusting an injection ratio between fuel injection from the in-cylinder injection valve and fuel injection from the port injection valve according to an operation state of the engine,the electronic control unit being configured to perform imbalance determination based ...

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Номер записи: 99
13-07-2017 дата публикации

Fuel System Flush Circuitry and Method for Operating the Same

Номер: US20170198633A1
Автор: David E. Hackett, Martin Lehman, Scott F. Shafer
Принадлежит: Caterpillar Inc

A fluid injection system includes a fluid injector assembly, a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly via an injector assembly inlet conduit. The fluid injection system further includes a flush conduit fluidly coupled to the outlet port of the fluid conditioning module, a flush valve disposed in the flush conduit and configured to control a flowrate of fluid therethrough, and a controller operatively coupled to the fluid conditioning module and the flush valve, the controller being configured to adjust a flowrate of a fluid through the injector assembly inlet conduit by controlling a flowrate of fluid through the flush conduit.

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Номер записи: 100