Fuel Injection Pump Patents (Class 123/179.17)
-
Patent number: 7966984Abstract: A method of operating a fuel delivery system for an internal combustion engine is described. The method may include, after or during engine shutdown, and during a fuel system cool down, activating the first pump; and varying the activation of the first pump responsive to temperature to maintain a higher pressure for high temperatures. By utilizing the pump to generate increased pressure at an appropriate condition during the cool down, for example, the pressures in the system can be managed to reduce the likelihood of fuel migrating to the rail.Type: GrantFiled: October 26, 2007Date of Patent: June 28, 2011Assignee: Ford Global Technologies, LLCInventors: Joseph Norman Ulrey, Eric Matthew Storhok, Ross Dykstra Pursifull, Frank Gonzales, Jr.
-
Patent number: 7905217Abstract: An electronic fuel injection control device of the present invention has at least a fuel injection device for injecting a fuel devoted to a combustion, and a power source circuit for rectifying and stabilizing an alternating-current voltage generated, based on a rotation of a crank shaft; controls the fuel injection device in an internal combustion engine started by rotating the crank shaft through a manual operation; and further has a power source voltage detection mechanism for detecting a value of a power source voltage supplied to the injection device by the circuit, and an Information processing mechanism for starting an operation when receiving a supply of a direct-current voltage from the circuit, initializing itself, inputting a power source voltage value detected by the detection mechanism, and instructing a first fuel injection for the fuel injection device when the input voltage value attains a predetermined voltage value.Type: GrantFiled: August 2, 2006Date of Patent: March 15, 2011Assignee: Keihin CorporationInventors: Takashi Namari, Masato Ono
-
Patent number: 7891340Abstract: A method for operating a fuel delivery system with a first pressure pump fluidly coupled to a second higher pressure pump is described. In one example, the fuel pumps are adjusted based on measured fuel pressure during a first condition. The fuel pumps are adjusted independent of the measured fuel pressure during a second condition.Type: GrantFiled: April 30, 2008Date of Patent: February 22, 2011Assignee: Ford Global Technologies, LLCInventors: Gopichandra Surnilla, David George Farmer, Davor David Hrovat
-
Patent number: 7832375Abstract: An engine system and a method of starting an internal combustion engine of the engine system are described. In one embodiment, the method includes adjusting a fuel pressure within a fuel rail to exceed a pressure of a pressure relief valve. The method may be particularly useful during degradation of a fuel pressure sensor.Type: GrantFiled: November 6, 2008Date of Patent: November 16, 2010Assignee: Ford Global Technologies, LLCInventors: Daniel Dusa, Joseph Lyle Thomas, Gopichandra Surnilla, Joseph Norman Ulrey, Ross Dykstra Pursifull
-
Patent number: 7810464Abstract: Procedure for starting a combustion engine with at least one combustion chamber, whereby injections from the high pressure system are deposited into the combustion chamber during the starting process, is thereby characterized, in that at least one injection into the combustion engine can be blanked out in order to limit a pressure drop in the high pressure system.Type: GrantFiled: November 20, 2008Date of Patent: October 12, 2010Assignee: Robert Bosch GmbHInventors: Wolfgang Samenfink, Andreas Kufferath
-
Patent number: 7801672Abstract: A pressure reducing valve is provided for reducing fuel pressure in a high-pressure fuel system, which supplies high-pressure fuel from a high-pressure pump to an injector, after an engine stops. An ECU detects or estimates an engine stop position when the engine stops and sets after-stop target fuel pressure in accordance with the detected or estimated engine stop position. The ECU controls a valve opening action of the pressure reducing valve to reduce the fuel pressure in the high-pressure fuel system to the after-stop target fuel pressure after the engine stops. In the control, the ECU sets the after-stop target fuel pressure to be lower as a piston position of a cylinder in a compression stroke at the engine stop position is closer to a top dead center.Type: GrantFiled: November 5, 2008Date of Patent: September 21, 2010Assignee: Denso CorporationInventor: Kuniaki Ueda
-
Patent number: 7784441Abstract: A vehicle includes a direct start engine, an automatic transmission having a threshold fluid pressure sufficient for enabling operation of the transmission when the engine is off, a controller, and a fuel delivery system. The controller determines the presence of predetermined engine states, and optimizes a stop-and-go functionality of the engine. The fuel delivery system includes a motor and an integrated pump assembly having a secondary high-pressure (HP) fuel pump which is selectively connectable to a rotatable shaft of the motor, and a secondary low-pressure (LP) fluid pump which is continuously connected to the shaft. The motor continuously energizes the secondary LP fluid pump via the rotatable shaft to thereby maintain the threshold fluid pressure during a first or second engine state, and selectively energizes the secondary HP fuel pump via the rotatable shaft to maintain the threshold fuel pressure during the second engine state.Type: GrantFiled: December 18, 2009Date of Patent: August 31, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Qi Ma, Hsu-Chiang Miao, Kenneth J. Shoemaker, Thomas R. Brown
-
Publication number: 20100206257Abstract: In a method for starting an internal combustion engine, immediately before a predetermined idling speed is reached for the first time, a rate of injection of fuel into at least one combustion chamber of the internal combustion engine is reduced for at least one cycle of the internal combustion engine.Type: ApplicationFiled: November 12, 2009Publication date: August 19, 2010Applicant: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFTInventor: Ruben Van den Bergh
-
Publication number: 20100154752Abstract: A fuel delivery system is provided for a combustion engine having an exhaust treatment device. The fuel delivery system includes a fuel supply, an injector configured to pressurize fuel and inject the pressurized fuel into the combustion engine, and a transfer pump configured to direct fuel from the fuel supply to the injector. The fuel delivery system also includes an electric pump configured to selectively direct fuel from the fuel supply to the injector during a priming event, and to selectively direct fuel from the fuel supply to the exhaust treatment device.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Inventors: Joseph Shane Burkitt, Ye Tian, Drew Christopher Donnelli
-
Patent number: 7735472Abstract: In an internal combustion engine provided with a high-pressure fuel pump, if the discharging rate of the high-pressure fuel pump is greater than the injection quantity of fuel injected from a injector with the high-pressure fuel pump remaining uncontrollable due to failure or the like, it is probable that the fuel pressure in a common rail unintentionally rises to affect the injector. A high-pressure fuel supply apparatus is provided to solve such a problem. A high-pressure fuel supply apparatus according to the present invention is configured such that if the high-pressure fuel supply apparatus or a control apparatus thereof causes malfunction to increase the pressure in the common rail, the pressure in the common rail does not exceed pressure affecting the flow characteristic and spray characteristic of the injector after recovery from the malfunctioning state.Type: GrantFiled: November 25, 2008Date of Patent: June 15, 2010Assignee: Hitachi, Ltd.Inventors: Takashi Okamoto, Shinsaku Tsukada, Hideharu Ehara, Masahiro Toyohara
-
Patent number: 7717077Abstract: A starting system is provided for delivering pressurized fuel to an engine to start the engine without a starter. The starting system includes an accumulator for storing pressurized fuel during engine operation and engine shut-down. During engine start-up, the accumulator delivers the stored pressurized fuel to the engine to start the engine. The accumulator is in fluid communication with a low pressure fuel reservoir and the engine. The accumulator includes an accumulator housing defining an accumulator cavity and including an accumulator piston and spring assembly, which is moveable longitudinally within the accumulator cavity. An electronic control module (ECM) is in electronic control with the starting system and the engine. The ECM is operable to activate the accumulator, forcing pressurized fuel stored within the accumulator into a high-pressure fuel line for injection into the engine, to generate at least one starting combustion event to start the engine without a starter.Type: GrantFiled: November 13, 2007Date of Patent: May 18, 2010Assignee: GM Global Technology Operations, Inc.Inventor: Gregory P. Prior
-
Patent number: 7712445Abstract: An apparatus for providing pressurized fuel for an engine includes an engine starting apparatus including an electric motor operative to crank the engine and a fuel pump operatively coupled to the electric motor.Type: GrantFiled: October 31, 2007Date of Patent: May 11, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Qi Ma, William C. Albertson, Frederick J. Rozario
-
Patent number: 7690354Abstract: A system and method to heat a fuel injector is described. Resistive heating may be selectively applied to improve the performance of a fuel injector. Specifically, current can be supplied to an electrically operable mechanical valve to improve the operation of the valve at lower temperatures. The method can improve engine performance and lower emissions, at least under some conditions.Type: GrantFiled: December 5, 2006Date of Patent: April 6, 2010Assignee: Ford Global Technologies, LLCInventors: Allan Gale, Larry Elie, Clay Maranville
-
Patent number: 7690344Abstract: A vehicle includes a direct-start engine and a fuel rail with a threshold fuel pressure, a transmission having a threshold fluid pressure, and a fuel delivery system. The system has a controller, a motor having a shaft, and an integrated pump assembly including a high-pressure (HP) fuel pump and a low-pressure (LP) fluid pump each connected to the shaft. Threshold pressures are maintained during the predetermined engine state, which includes an engine idling and an engine cranking state. A method for providing stop-and-go functionality in a vehicle having a direct-start engine includes detecting a current engine state, rotating a motor shaft to energize a secondary HP fuel pump at a first threshold pressure during engine cranking, and rotating the shaft to energize an LP fluid pump at a second threshold pressure during engine idling and engine cranking. The secondary pumps can also be used when primary pumps are temporarily inoperable.Type: GrantFiled: July 24, 2008Date of Patent: April 6, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Qi Ma, Hsu-Chiang Miao, Kenneth J. Shoemaker, Thomas R. Brown
-
Patent number: 7689346Abstract: A fuel injection device of a diesel engine capable of smoothly starting the diesel engine to match an environment around the engine by saving fuel, reducing the exhaustion of carbon dioxide, and suppressing black smoke in starting the diesel engine. A rack is operated by an actuator from a lowest rack position to a starting increased fuel amount position at a lower speed than that at which the rack is operated by the actuator from the lowest rack position to the starting increased fuel amount position at the maximum operating speed. The operating speed of the rack is set in two stages, and the later operating speed of the rack is reduced less than the operating speed of the rack up to a set intermediate rack target value P2. Then, the operating amount of the rack per hour is reduced after the ignition of the engine is recognized. Also, the operating speed of the rack is controlled according to an atmospheric temperature in starting the engine.Type: GrantFiled: January 19, 2006Date of Patent: March 30, 2010Assignee: Yanmar Co., Ltd.Inventors: Hiroyuki Machiyama, Nobuyoshi Fukae, Shigeki Tada, Hideo Shiomi
-
Publication number: 20100000496Abstract: In known methods for carrying out a high-pressure start of an internal combustion engine, inconvenient starting behaviour can sometimes occur. A method for carrying out a high-pressure start of an internal combustion engine (1) is provided, in which method a high-pressure pump (22) is used to feed fuel from a fuel tank (17) to a pressure accumulator (20) and a pressure adjusting means (23) is used to control the pressure in the pressure accumulator (20)), wherein the high-pressure pump (22) is operated before carrying out a fuel injection into a combustion chamber of the internal combustion engine (1), and the pressure adjusting means (23) is activated in such a way that, during the operation of the high-pressure pump (22), the pressure build-up in the pressure accumulator (20) above a pressure limit value pTHRES, upon the exceedance of which the fuel injection is enabled, is retarded.Type: ApplicationFiled: September 14, 2007Publication date: January 7, 2010Inventors: Martin Bretl, Benoit Chapuis, Martin Cwielong, Matthias Wiese
-
Patent number: 7591239Abstract: A high-pressure fuel pump control device is capable of reducing current consumption, increasing pump durability, and promoting a rise of fuel pressure from startup. The high-pressure fuel pump control device comprises a fuel injector valve for directly injecting fuel in a common rail into a combustion chamber and a high-pressure fuel pump for feeding the fuel under pressure to the common rail. The high-pressure fuel pump comprises a pressurization chamber, a plunger for pressurizing the fuel in the pressurization chamber, a fuel passage valve disposed in the pressurization chamber, and an actuator for actuating the fuel passage valve. The control device includes a control unit for executing output control of a drive signal for the actuator to vary a discharge rate of the high-pressure fuel pump.Type: GrantFiled: November 13, 2007Date of Patent: September 22, 2009Assignee: Hitachi, Ltd.Inventor: Takashi Okamoto
-
Patent number: 7568471Abstract: A fuel injection priming system includes a fuel supply line connected to a fuel supply rail. A plurality of piezoelectric fuel injectors are connected to the fuel supply rail. An injector return fuel line is connected to the fuel injectors and in communication with a fuel supply line via a diverter valve to allow pressure fuel from the high pressure fuel pump return line to pressurize the injector return fuel line to backfill the injectors during a priming operation. A fuel restriction device is in communication with the diverter valve to restrict fuel flow through the injector return line to provide sufficient backfill for the fuel injectors during the priming operation and to allow fuel to pass to the fuel tank from the injector return fuel line during normal operation.Type: GrantFiled: September 4, 2008Date of Patent: August 4, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Henry W Harper, Peter Hubl, Bryan A Kuieck
-
Patent number: 7567866Abstract: A fuel injection control device of an internal combustion engine capable of using multiple kinds of fuel includes an ECU with a ROM for storing multiple reference fuel injection quantity maps corresponding to mixture concentrations of the multiple kinds of fuels. A control program of the CPU stores which of the multiple reference fuel injection quantity map is used out of the maps in an EEP-ROM, performs starting control of an engine using the reference fuel injection quantity map which is used immediately before stopping previous time at the time of initiating the starting based on the stored maps and, at the same time, performs the starting control by gradually increasing the fuel injection quantity until the starting of an engine is finished. As a result, control of fuel supply is optimized in response to mixing different kinds of fuels, and the engine starting time is shortened.Type: GrantFiled: August 23, 2007Date of Patent: July 28, 2009Assignee: Honda Motor Co., Ltd.Inventor: Shiro Kokubu
-
Publication number: 20090183707Abstract: An operation control system for an engine having at least one piston includes an engine control unit which drives a fuel pump for supplying fuel to an injector. The engine control unit is configured to perform a control function to cut the electric power supply to the fuel pump when the piston arrives at a position in the vicinity of compression top dead center in the cylinder of the engine.Type: ApplicationFiled: January 9, 2009Publication date: July 23, 2009Inventor: Yuichi Sasaki
-
Publication number: 20090120397Abstract: A starting system is provided for delivering pressurized fuel to an engine to start the engine without a starter. The starting system includes an accumulator for storing pressurized fuel during engine operation and engine shut-down. During engine start-up, the accumulator delivers the stored pressurized fuel to the engine to start the engine. The accumulator is in fluid communication with a low pressure fuel reservoir and the engine. The accumulator includes an accumulator housing defining an accumulator cavity and including an accumulator piston and spring assembly, which is moveable longitudinally within the accumulator cavity. An electronic control module (ECM) is in electronic control with the starting system and the engine. The ECM is operable to activate the accumulator, forcing pressurized fuel stored within the accumulator into a high-pressure fuel line for injection into the engine, to generate at least one starting combustion event to start the engine without a starter.Type: ApplicationFiled: November 13, 2007Publication date: May 14, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Gregory P. Prior
-
Publication number: 20090107442Abstract: An apparatus for providing pressurized fuel for an engine includes an electric motor operative to crank said engine, a fuel pump, and a gear reduction device. This gear reduction device includes a worm and worm wheel and operates to receive a high speed input from said electric motor and to deliver a low speed output to said fuel pump.Type: ApplicationFiled: October 31, 2007Publication date: April 30, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Qi Ma, Hsu-Chiang Miao
-
Patent number: 7478625Abstract: An engine cranking system includes fuel injectors that are associated with multiple combustion chambers of an engine. The fuel injectors include a first fuel injector that is associated with a first combustion chamber. A second fuel injector is associated with a second combustion chamber. A control module is coupled to the fuel injectors and operates the first fuel injector in a deactivated state for a first chamber cycle during cranking of said engine. The first chamber cycle includes intake and exhaust strokes and is associated with a first combustion chamber.Type: GrantFiled: September 11, 2007Date of Patent: January 20, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Jesse M. Gwidt, Jonathan T. Shibata, Vijay Ramappan, Stuart R. Smith, Michael J. Lucido
-
Patent number: 7475534Abstract: The invention is directed to a method for controlling fuel injection in an internal combustion engine (10) having at least one electric machine (26), wherein a direct injection system (18) for direct injection of fuel into at least one combustion chamber (54) of the internal combustion engine (10) is associated with the internal combustion engine (10), the direct injection system (18) including a mechanically driven high-pressure fuel pump (22) for generating a fuel pressure in an accumulator volume (20) upstream of the at least one combustion chamber (54).Type: GrantFiled: December 15, 2005Date of Patent: January 13, 2009Assignees: Volkswagen Aktiengesellschaft, Skoda Auto a.s.Inventors: Ekkehard Pott, Matthias Holz, Michael Zillmer, David Prochazka
-
Publication number: 20080276910Abstract: An apparatus for providing pressurized fuel for an engine includes an engine starting apparatus including an electric motor operative to crank the engine and a fuel pump operatively coupled to the electric motor.Type: ApplicationFiled: October 31, 2007Publication date: November 13, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Qi Ma, William C. Albertson, Frederick J. Rozario
-
Patent number: 7448361Abstract: A method is described for operating a fuel system during start up, the system utilizing gasoline direct injection for an internal combustion engine including a first pump and second pump, an electromechanical valve, and a check valve fluidly coupled downstream of the first pump. The fuel system further includes a fuel rail downstream of the check valve and direct fuel injectors coupled to the engine. The method includes generating a flow of fuel in the fuel system via the first pump during an engine start before ignition of the engine; actuating the valve during the fuel flow to generate a pressure wave that travels through the fuel system past the check valve; and injecting fuel via the direct fuel injectors at an increased pressure generated by the pressure wave and held in the fuel rail via the check valve.Type: GrantFiled: October 23, 2007Date of Patent: November 11, 2008Assignee: Ford Global Technologies, LLCInventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
-
Patent number: 7448363Abstract: A fuel delivery system for an engine. The fuel delivery system includes a fuel tank, at least one fuel injector, a fuel pump, a pressure sensor, a temperature sensor, and an engine control module. The fuel pump is configured to draw fuel from the fuel tank and provide the fuel to the at least one fuel injector. The pressure sensor is configured to sense a pressure of the fuel being provided to the at least one fuel injector. The temperature sensor is configured to sense a temperature of the engine. And the engine control module is configured to control the fuel pump based on the sensed pressure and the sensed temperature.Type: GrantFiled: July 2, 2007Date of Patent: November 11, 2008Assignee: Buell Motorcycle CompanyInventors: Matt Rasmussen, Daniel Hurda
-
Patent number: 7383804Abstract: A procedure to recognize a depressurized fuel system of a motor vehicle with an internal combustion engine that includes a parameter characterizing the fuel system temperature is acquired when turning off the internal combustion engine; a parameter characterizing the fuel system temperature is acquired in the immediately subsequent driving cycle when starting the internal combustion engine; and from the difference between the shut-down temperature and the starting temperature, the pressure in the fuel system is inferred.Type: GrantFiled: November 9, 2006Date of Patent: June 10, 2008Assignee: Robert Bosch GmbHInventors: Jens Wolber, Karsten Hinn, Timm Hollmann, Matthias Walz, Marcel Matischok
-
Patent number: 7380537Abstract: In a vehicle incorporating an internal combustion engine having in-cylinder injectors and intake manifold injectors and performing engine intermittent operation control, at the end of vehicle operation, the fuel pressure is decreased in both a high-pressure delivery pipe and a low-pressure delivery pipe by actuation (opening) of an electromagnetic relief valve and by stop of operation of a low-pressure fuel pump. This prevents deterioration in emission performance at the next engine start attributable to fuel leakage due to degradation in oil tightness of the injectors during the operation stop period. When the engine is temporarily stopped by engine intermittent operation control, while the low-pressure fuel pump is stopped, actuation (opening) of the electromagnetic relief valve is prohibited. At the engine restart after temporary stop, the fuel in the high-pressure delivery pipe having its pressure secured at a certain level is injected to quickly start the engine.Type: GrantFiled: August 6, 2007Date of Patent: June 3, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Katsuhiko Yamaguchi, Toshio Inoue, Mamoru Tomatsuri, Keiko Hasegawa, Keita Fukui
-
Publication number: 20080087256Abstract: An advance arrangement for use in controlling timing of fuel delivery by a fuel pump for use in an engine comprises an advance piston (12) which is slidable within a first bore (14) and which cooperates, in use, with a cam arrangement of a fuel pump to adjust the timing of fuel delivery by the pump. A surface associated with the advance piston (12) is exposed to fuel pressure within a first control chamber (38). The pressure of fuel within the first control chamber (38) is controlled by means of a servo piston (24) which is slidable within a further bore (22) provided in the advance piston (12). The servo piston (24) is responsive to speed dependent fuel pressure variations within a servo control chamber (37), thereby to permit adjustment of the timing in response to engine speed.Type: ApplicationFiled: October 12, 2006Publication date: April 17, 2008Inventors: Leslie Edwin Chapman, Rodney Dyason
-
Patent number: 7350503Abstract: A fuel injection pump 100 comprises a thermoelement CSD 47 for advancing injection timing in a cold temperature condition. The CSD 47 uses a piston 46 for opening and closing a sub port 42 formed in a plunger barrel 8. An electronic governor 2 is provided with a mechanism for decreasing an injected fuel quantity when an engine starts in a cold temperature condition. The mechanism shifts a rack position in a fuel-decrease direction in a cold temperature condition, and switches the rack position to a normal position in a normal temperature condition. A timing TR for shifting the rack position is set before or simultaneous to a timing TC for switch-off of the CSD 47.Type: GrantFiled: November 14, 2003Date of Patent: April 1, 2008Assignee: Yanmar Co., Ltd.Inventors: Masamichi Tanaka, Tohru Ogawa, Satoshi Hattori
-
Patent number: 7331333Abstract: A direct fuel injection/spark ignition engine control device is configured to enable compression stroke injection when the fuel pressure is low at startup and immediately after startup, and to reduce the wall flow and amount of HC exhaust. When the catalyst requires warming, fuel is injected in the compression stroke, and the fuel injection timing in the compression stroke is set in accordance with the fuel pressure. When the fuel pressure is low, the fuel injection timing injects fuel in the first half of the compression stroke. The fuel injection timing is delayed as the fuel pressure increases until the optimum fuel injection timing is reached.Type: GrantFiled: January 11, 2005Date of Patent: February 19, 2008Assignee: Nissan Motor Co., Ltd.Inventor: Takao Maitani
-
Publication number: 20070227502Abstract: An engine comprises an upstream interlocking portion (1) near a crank shaft, which is interlockingly connected through a timer (20) to a downstream interlocking portion (2). The timer (20) is provided with a temperature-sensing operation means (7). During a cold-starting term while the temperature-sensing operation means (7) senses a temperature of a value less than a predetermined one, the downstream interlocking portion (2) advances by an advancing operation of the timer (20) based on an operation that the temperature-sensing operation mean (7) makes upon sensing the temperature. While the engine is warm, the temperature-sensing operation means (7) senses a temperature of a value not less than the predetermined one, the downstream interlocking portion (2) cancels an advancement by an advancement-cancellation operation of the timer (20) based on another operation that the temperature-sensing operation mean (7) makes upon sensing the temperature.Type: ApplicationFiled: March 14, 2007Publication date: October 4, 2007Applicant: KUBOTA CORPORATIONInventors: Masayasu TAKAMI, Tadao YAMATO, Tetsuya KOSAKA, Yoshikazu TAKEMOTO
-
Patent number: 7255081Abstract: The present invention relates to methods for charging at least one combustion chamber (12) of a spark-ignition combustion engine (10) with fuel and air. At least one combustion chamber charge is produced during a shutoff phase of the internal-combustion engine (10) and is ignited when the internal-combustion engine (10) is subsequently started. The methods are characterized in that, during the shutoff phase, at least one measure is taken to produce a high percentage of fuel vapor in the combustion chamber charge. The present invention also relates to a control unit for controlling the methods.Type: GrantFiled: March 4, 2004Date of Patent: August 14, 2007Assignee: Robert Bosch GmbHInventors: Udo Sieber, Jochen Laubender, Andre-Francisco Casal Kulzer
-
Patent number: 7231910Abstract: The invention relates to a method for setting the feed rate of a fuel pump unit, which sucks up fuel from a fuel tank 8, as a function of the feed pressure, which is built up by the fuel pump unit, in an outlet 25 of the fuel pump unit, which outlet leads to an internal combustion engine. The fuel pump unit has a first pump stage and a second pump stage, the two pump stages being connected in parallel below a defined feed pressure in the outlet 25 of the fuel pump unit and being connected in series above the defined feed pressure.Type: GrantFiled: January 12, 2005Date of Patent: June 19, 2007Assignee: Siemens AktiengesellschaftInventor: Gunter Wagner
-
Patent number: 7222611Abstract: When an engine operation is stopped, a bypass passage returning fuel in a fuel supply passage into a fuel tank is opened to return a part of the fuel in the fuel supply passage, and a fuel pressure in the fuel supply passage is lowered to a predetermined fuel pressure higher than the atmospheric pressure, to be regulated.Type: GrantFiled: September 9, 2004Date of Patent: May 29, 2007Assignee: Hitachi Ltd.Inventors: Nobuaki Sekiya, Hiroshi Yamada
-
Patent number: 7216614Abstract: A fuel supply device can have a low pressure fuel pump that supplies fuel to a vapor separator tank positioned adjacent to an engine from a main fuel tank disposed in a hull. An electrically operated primary fuel pump (e.g., a primer pump) and a check valve can both be positioned parallel to each other and between the main fuel tank and the low pressure fuel pump. A control device can be connected to the primary fuel pump for operating the primary fuel pump only for a preset fuel supply time when starting the engine is attempted and prior to the start of the engine.Type: GrantFiled: September 16, 2005Date of Patent: May 15, 2007Assignee: Yamaha Marine Kabushiki KaishaInventors: Yasuhiko Shibata, Katsumi Ochiai
-
Patent number: 7201128Abstract: In a fuel supply system for an internal combustion engine with direct fuel injection including a fuel supply pump and, downstream thereof, a high pressure pump for supplying high pressure fuel to a plurality of injectors and, parallel to the high pressure fuel pump, a hydraulic transmission operated by the low pressure fuel of the fuel supply pump for generating initially high pressure fuel to the fuel injectors so as to permit instant engine startup upon actuation of a valve disposed in the fuel supply line from the fuel supply pump to the hydraulic transmission.Type: GrantFiled: June 22, 2005Date of Patent: April 10, 2007Assignee: DaimlerChrysler AGInventor: Normann Freisinger
-
Patent number: 7152585Abstract: A fuel injection pump comprises: a barrel formed with a main port 39 and a sub port 36a; a plunger 32; and a CSD 30 including an injection-advancing actuator 38 which operates a piston 35 for opening or closing sub port 36a so as to change an injection timing. Plunger 32 is moved to connect or separate sub port 36a and main port 39 to and from a fuel compression chamber 17. The barrel is further formed with at least one exclusive overflowing sub port 36b constantly opened regardless of the operational state of the piston 35.Type: GrantFiled: December 7, 2005Date of Patent: December 26, 2006Assignee: Yanmar Co., Ltd.Inventor: Masamichi Tanaka
-
Patent number: 7134413Abstract: A method for determining a malfunction of a pressure sensor determines that a stick malfunction occurs in the pressure sensor by an ECU calculating a difference between a maximum value and a minimum value of a voltage value output from the pressure sensor mounted in a fuel tank and determining that a malfunction has occurred in a case that the difference is less than a predetermined value.Type: GrantFiled: December 12, 2005Date of Patent: November 14, 2006Assignee: Hyundai Motor CompanyInventor: Joon Kwan Cho
-
Patent number: 7121245Abstract: In an injection control device for a fuel injection pump comprising: a water temperature sensor; a cold start device (CSD) for advancing a fuel injection timing to an engine when started up in a low temperature; and a controller, the controller recognizes a value T of water temperature by a signal from the water temperature sensor, and activates the CSD when the engine is started up and when the value of water temperature recognized by the controller (recognized value T of water temperature) is lower than a threshold value Tc of water temperature.Type: GrantFiled: December 7, 2005Date of Patent: October 17, 2006Assignee: Yanmar Co., Ltd.Inventors: Masamichi Tanaka, Hajimu Imanaka
-
Patent number: 7093576Abstract: A method for priming a fuel injected internal combustion engine with a returnless fuel system having a check valve and initiating a fuel pump with a command signal. After said initiation, adjusting said command signal as a sensed fuel pressure varies to achieve a fuel pressure and holding said command signal for a hold period after achieving said fuel pressure.Type: GrantFiled: June 15, 2004Date of Patent: August 22, 2006Assignee: Ford Global Technologies, LLCInventor: Scott DeRaad
-
Patent number: 7089914Abstract: A method for operating an internal combustion engine, in particular of a motor vehicle including at least one fuel pump delivers the fuel from a fuel tank into a fuel line. The pressure of the fuel, at least in a region of the fuel line, is increased as a function of an operating state. In order to assure a reliable starting of the engine, the pressure of the fuel, at least In the above-mentioned region of the fuel line is at least intermittently increased when the engine is not running.Type: GrantFiled: December 6, 2001Date of Patent: August 15, 2006Assignee: Robert Bosch GmbHInventors: Klaus Joos, Jens Wolber, Thomas Frenz, Markus Amler, Hansjoerg Bochum
-
Patent number: 7080630Abstract: A system and method to control fuel delivery to an engine at startup includes a crank sensor that determines a rotational position of the engine. A control module calculates an air mass of a first cylinder based on the rotational position of the engine and delivers fuel to the first cylinder based on the air mass. The air mass is based on a volume, a pressure and a temperature of the first cylinder.Type: GrantFiled: September 1, 2005Date of Patent: July 25, 2006Assignee: GM Global Technology Operations, Inc.Inventors: Kenneth J. Buslepp, Douglas R. Verner, David P. Sczomak
-
Patent number: 7072757Abstract: An apparatus and method of controlling an engine by determining the state of an ignition command device and the speed of an engine and operating a fuel pump during a predetermined period in response to the ignition command device being in a predetermined state and the speed being substantially zero.Type: GrantFiled: October 29, 2001Date of Patent: July 4, 2006Assignee: Caterpillar Inc.Inventors: Robert E. Adams, Douglas M. Chevalier, Jeffery T. Fischer, Robert C. Griffith, Jr., Bin He, Diane M. Laugel
-
Patent number: 7066126Abstract: To perform fuel injection under fuel pressure as high as needed in an operation range of from cranking to self-sustaining operation via full expansion. A fuel supply fuel system for a direct fuel injection type internal combustion engine is provided with a high-pressure fuel pump to directly inject fuel, which has been pressurized by the high-pressure fuel pump, from injectors into combustion chambers of the engine. An electromotor is arranged to auxilially drive the high-pressure fuel pump At the time of a start-up of the engine, driving of the high-pressure fuel pump or an assist to drive torque for the high-pressure fuel pump is performed by the auxiliary power means.Type: GrantFiled: April 20, 2004Date of Patent: June 27, 2006Assignee: Hitachi, Ltd.Inventors: Noboru Tokuyasu, Toshiharu Nogi, Takashi Yoshida
-
Patent number: 7051706Abstract: A control mechanism for a fuel injection pump comprises: an electronic governor which actuates a rack actuator by a controller for controlling a governing rack; and a cold start device which actuates an injection-quickening actuator by the controller for opening or closing a draining sub port formed in a plunger barrel so as to advance injection timing when an engine is cold. Different settings about control degree of the governing rack controlled by the controller are prepared for a case where the injection-quickening actuator is actuated to switch on the cold start device (as characteristic curve 61a), and for a case where the injection-quickening actuator is disactuated to switch off the cold start device (as characteristic curve 61b), respectively.Type: GrantFiled: October 6, 2005Date of Patent: May 30, 2006Assignee: Yanmar Co., Ltd.Inventors: Masamichi Tanaka, Hajimu Imanaka
-
Patent number: 7025028Abstract: For controlling and regulating the startup operation of an internal combustion engine (1) a method is proposed in which a rail pressure is compared with a limit value on activation of the startup operation. Depending on this comparison, a first or second mode is set, whereby the rail pressure (pCR) for the startup operation is controlled in the first mode and is regulated in the second mode. It is provided according to this invention that after the initial setting of the second mode, that mode is retained for the remaining startup operation. This achieves the advantage that high-pressure fluctuations due to alternating modes are effectively prevented.Type: GrantFiled: November 12, 2002Date of Patent: April 11, 2006Assignee: MTU Friedrichshafen GmbHInventor: Armin Dölker
-
Patent number: 7021261Abstract: In an internal combustion engine, the fuel is conveyed by an electrically driven fuel pump. The intake side of this pump is connected to a fuel tank and its outlet side is connected to a pressure region. A prerun of the electrically driven fuel pump may be performed before the startup of the internal combustion engine. In order to increase the service life of the fuel pump, an actual pressure (pactual) in the pressure region may be detected by a pressure sensor and the execution of the prerun be a function of at least the signal of the pressure sensor.Type: GrantFiled: September 14, 2002Date of Patent: April 4, 2006Assignee: Robert Bosch GbmHInventors: Klaus Joos, Jens Wolber, Thomas Frenz, Markus Amler, Karsten Hinn
-
Patent number: 7007672Abstract: The invention relates to a starting system (1) for an internal combustion engine comprising pressurized fuel supply means (3), an accumulator means (2), which is supplied with pressurized fuel by said supply means, and at least one injection means (4) which is supplied with fuel by the accumulator means (2). According to the invention, the system also comprises a device for storing pressurized fuel (5), which is supplied due to the pressure in the accumulator means. At start-up, the aforementioned fuel storage device can supply the stored fuel in such a way as to provide a second fuel compression means which enables the engine to start up more rapidly. The invention is particularly suitable for use in the area of common-rail engines.Type: GrantFiled: January 8, 2003Date of Patent: March 7, 2006Assignee: Peugeot Citroen Automobiles SAInventors: Eric Condemine, Vincent Basso