Regulating Means Adjusts Fuel Pressure Patents (Class 123/457)
  • Patent number: 10563610
    Abstract: Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: February 18, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Paul Hollar, Mary Catherine Farmer, Ethan D. Sanborn, Daniel Dusa, Joseph Lyle Thomas
  • Patent number: 10563601
    Abstract: A method for correcting a deviation of static flow rates of GDI injectors is provided. The method includes calculating a target pressure drop amount for each cylinder and a relative pressure drop amount for each cylinder from a detected pressure drop amount. An injection correction factor for each cylinder is primarily adjusted by comparing the relative pressure drop amount for each cylinder, with an average of relative pressure drop amounts of all cylinders. The injection correction factor is then secondarily adjusted by comparing an average of injection correction factors of all cylinders with 1.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: February 18, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Kyung-Ho Ahn
  • Patent number: 10526994
    Abstract: Various methods and systems are provided for health assessments of a fuel system. In one example, a fuel system includes a high-pressure fuel pump operable to increase fuel pressure from a first pressure to a second pressure, a common fuel rail fluidly coupling the high-pressure fuel pump to a plurality of fuel injectors each of which is operable to inject fuel to individual cylinders of an engine, a pressure sensor operable to detect a pressure of fuel at the common fuel rail, and a controller operable to diagnose a condition of the high-pressure fuel pump based on output from the pressure sensor.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: January 7, 2020
    Assignee: Transportation IP Holdings, LLC
    Inventors: Morse N. Taxon, Pradheepram Ottikkutti
  • Patent number: 10513998
    Abstract: Methods and systems are provided for calibrating a fuel lift pump. While operating in a pulsed mode, a duty cycle of the pulse is ramped in. Based on the ramp rate of the applied voltage or current relative to a resulting rate of change of the fuel pressure, a calibration gain or transfer function value is estimated and applied during subsequent fuel pump operation.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: December 24, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Uhrich, Ross Pursifull
  • Patent number: 10487769
    Abstract: A fuel injection control apparatus for an internal combustion engine includes a low pressure fuel pump, a low pressure fuel passage, a high pressure fuel pump, a high pressure fuel passage, a fuel injection valve, a high pressure controller, and a low pressure controller. The low pressure controller calculates a feedforward correction amount that increases as a request injection amount of the fuel injection valve increases and an increase rate of the high pressure target value increases when a high pressure target value increases. The low pressure controller calculates a feedback correction amount based on a low-side pressure deviation when the high pressure target value increases. The low pressure controller controls driving of the low pressure fuel pump based on a sum of the feedforward correction amount and the feedback correction amount.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: November 26, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sohichi Imai, Motohiro Sugimoto, Masanao Idogawa
  • Patent number: 10473065
    Abstract: A fuel return device includes a fuel collector and a return system. The fuel collector is located in a passage between a fuel tank and a vapor fuel processing device that processes vapor fuel discharged from the fuel tank. The fuel collector collects the fuel and stores the collected fuel as a storage fuel. The return system extends from the fuel collector, and is connected to a low-pressure generation part that generates a low pressure by a flow of fuel refueled through a filler pipe into the fuel tank, to return the storage fuel to the fuel tank.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: November 12, 2019
    Assignee: KYOSAN DENKI CO., LTD.
    Inventor: Tetsuya Takahashi
  • Patent number: 10443552
    Abstract: A fuel supply device includes a pump unit that sucks stored fuel in a fuel tank from a suction port and discharges the fuel to an outside of the fuel tank. A pressure regulating valve performs pressure regulation of fuel discharged from the pump unit. The pressure regulating valve includes a return port having an opening facing in a separating direction away from the suction port, and returns surplus fuel generated by the pressure regulation from the return port into the fuel tank. A suction filter encloses an internal space where the suction port is open, and filters the stored fuel entering the internal space. The suction filter includes an expansion part to which the internal space is extended, and the expansion part is on a side of the return port that faces in the separating direction.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: October 15, 2019
    Assignees: DENSO CORPORATION, KYOSAN DENKI CO., LTD.
    Inventors: Shingo Fukuoka, Kiyoshi Nagata, Norihiro Hayashi, Katsuhisa Yamada
  • Patent number: 10253741
    Abstract: An object is to suppress cavitation generated at a distal end portion of a seat face when a valve body and a seat portion collide with each other. In a relief valve of a fuel pump, an intersection between the seat face and a flow channel hole is formed at a position more distant than the seat portion formed of the valve body in a valve closing state and the seat face in order to suppress generation of cavitation bubbles when the valve body improves and releases high-pressure fuel.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: April 9, 2019
    Assignee: Hitachi Automotive Systems, Ltd
    Inventors: Moritsugu Akiyama, Shigehiko Omata, Katsutoshi Kobayashi, Kenichiro Tokuo
  • Patent number: 10233861
    Abstract: A method and apparatus are disclosed for determining the fuel quantity that is actually injected by a fuel injector in an internal combustion engine. A fuel injector is operated to perform a fuel injection. The first discharge stroke of the fuel pump is deactivated following a start of the fuel injection for preventing the discharge stroke from delivering fuel into the fuel rail. A value of a pressure drop caused into the fuel rail by the fuel injection is calculated. A value of a fuel quantity injected by the fuel injection is calculated on the basis of the calculated value of the pressure drop.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: March 19, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATONS LLC
    Inventors: Stefano Nieddu, Andrea Mollar
  • Patent number: 10202921
    Abstract: A method controls a system for supplying diesel fuel on a motor vehicle. The system includes a fuel tank, a first pump that is a low-pressure pump taking fuel from the tank and delivering the fuel to a second pump that is a high-pressure pump. The method includes controlling the first pump to regulate the quantity of fuel provided as a function of the needs of the second pump, and determining a geographical position of the vehicle. The first pump is controlled to a maximum pressure level when the vehicle is in one of several predefined probable stopping zones.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: February 12, 2019
    Assignee: RENAULT S.A.S.
    Inventor: Frederic Lavoisier
  • Patent number: 10091901
    Abstract: To completely prevent air from leaking out from a conduit tube, which protects an electrical wire connecting an electrical equipment and a power source, and to easily and reliably electrically connect the electrical equipment and the power source in an air shelter. A pump and a motor are covered with a cover body, and an electrical wire that connects an explosion proof connector and a power source is not protected with a flexible conduit tube in the inside of the cover body, and protected with the flexible conduit tube only on the outer side of a conduit tube connector arranged on a side wall of a base.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: October 2, 2018
    Assignee: SHOWA KIKI KOGYO. CO. LTD.
    Inventor: Shinsuke Maeshiba
  • Patent number: 9995263
    Abstract: Fuel nozzle assemblies are flushed after ultrasonic cleaning. In one embodiment, a method includes: cleaning a fuel nozzle assembly by ultrasonic cleaning; and after the ultrasonic cleaning, flushing the fuel nozzle assembly using a solution, the fuel nozzle assembly comprising a valve located in an interior of the fuel nozzle assembly, the solution flowing through the interior of the fuel nozzle assembly, and the flowing of the solution controlled by the valve.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: June 12, 2018
    Assignee: STANDARD AERO (SAN ANTONIO) INC.
    Inventors: Daniel Rodriguez, Ulises Noguera
  • Patent number: 9932949
    Abstract: A partitioning portion partitions a fuel chamber into a first space, which receives a pressurizing chamber forming portion and is communicated with an inflow pipe, and a second space, which is communicated with an outflow pipe. A flow passage forming portion extends from the partitioning portion toward the first space side and forms a communicating flow passage, which communicates between the first space and the second space. Thereby, vapor contained in the fuel, which is returned from a pressurizing chamber to the fuel chamber, is accumulated as bubbles in the first space, which receives the pressurizing chamber forming portion. The first space is communicated with the outside through the communicating flow passage and the second space. Therefore, outputting of air bubbles of the first space to the outside can be effectively limited in comparison to a case where the fuel chamber is directly communicated with the outside.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: April 3, 2018
    Assignee: DENSO CORPORATION
    Inventors: Tetsuharu Matsuo, Hiroatsu Yamada, Noriya Matsumoto, Seiji Tanizawa, Shinobu Oikawa
  • Patent number: 9638348
    Abstract: System and methods for controlling a flow of fluid in a fuel system are disclosed. In an aspect, a gas admission system includes a gas admission valve assembly having an inlet, an outlet, and a valve configured to control a flow of fluid between the inlet and the outlet and a flow limiter assembly in fluid communication with the inlet of the gas admission valve assembly.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: May 2, 2017
    Assignee: Caterpillar Inc.
    Inventors: Sunil Bean, Andrew Neaville, Joshua Steffen
  • Patent number: 9611796
    Abstract: A cylinder-injection-engine control apparatus includes a fuel injection controller that executes air purge control for performing fuel injection in an intake stroke if fuel pressure is below a predetermined pressure when an engine starts. When executing the air purge control, the fuel injection controller makes a fuel injection time of an injector longer than when the fuel pressure is higher than or equal to the predetermined pressure. When executing the air purge control, if the amount of fuel in a fuel tank is larger than or equal to a predetermined amount and an integrated value of a fuel injection amount (integrated injection amount) since start of the fuel injection is larger than or equal to a predetermined value, the fuel injection controller stops the air purge control.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: April 4, 2017
    Assignee: FUJI JUKOGYO KABUSHIKI KAISHA
    Inventor: Yoshitaka Namekawa
  • Patent number: 9453475
    Abstract: Methods and systems are provided for operating a fuel system configured to deliver a gaseous fuel to an engine. Following tank refilling, the fuel composition is selectively updated based on fuel tank pressure, temperature, and air content data. When the engine is subsequently restarted, the fuel rail is primed for a duration based on the updated composition.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: September 27, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Adam Nolan, Jamie Terence Slaymaker, Andrew Paul Chee Aun Wong, Phuoc Buiquang
  • Patent number: 9291117
    Abstract: A method of controlling a low pressure fuel pump of a gasoline direct injection (GDI) engine includes receiving failure related information of a high pressure fuel pump, boosting, if the high pressure fuel pump is failed based on the failure related information of the high pressure fuel pump, a fuel pressure of the low pressure fuel pump to a setting pressure and controlling, if the high pressure fuel pump is not failed, the fuel pressure of the low pressure fuel pump based on a measured fuel pressure with respect to a target fuel pressure of the high pressure fuel pump or a change of a control value of the GDI engine. A corresponding control system includes a fuel supply pressure controller, among other components, which is operated by a predetermined program for executing the method of controlling the low pressure fuel pump of the GDI engine.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: March 22, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Bumky Lee, Heesup Kim
  • Patent number: 9261036
    Abstract: A method to minimize common rail pressure irregularities due to aliasing effect on battery voltage monitoring in a digital electronic control unit that is capable of PWM (Pulse Width Modulation) regulations of a metering valve unit in a diesel common-rail power-train system. At least an engine rotary speed signal is detected and at least a battery voltage signal is monitored, the method includes, but is not limited to calculating the aliasing frequency on said battery voltage signal as a function of said engine rotary speed signal, filtering the battery voltage signal before it is input to said controller module with at least one digital non-linear notch filter, the at least one digital non-linear notch filter centered about the first harmonic of the aliasing frequency, and input the filtered battery voltage signal, at least with the engine rotary speed signal, to the controller module for PWM regulating the metering valve unit.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: February 16, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Stefano Nieddu, Maura Dintino
  • Patent number: 9188077
    Abstract: A fuel injection control system for an internal combustion engine in which a driving signal for a high pressure fuel pump is calculated by using proportional plus integral control based on a difference between a delivery pressure of the high pressure fuel pump and a target pressure thereof. A delivery pressure of a low pressure fuel pump is caused to decrease when an amount of change per unit time of an integral term shows a decreasing tendency or zero, whereas the delivery pressure of the low pressure fuel pump is caused to increase when the amount of change per unit time of the integral term shows an increasing tendency. In cases where an increase in the integral term resulting from a change in the target delivery pressure of the high pressure fuel pump has occurred, the increase in the delivery pressure of the low pressure fuel pump is prohibited.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 17, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Susumu Kojima
  • Patent number: 9074550
    Abstract: An object of the invention is to provide a technology that enables to make the feed pressure as low as possible without inviting a misfire or a deviation of the air-fuel ratio, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. According to the invention, to achieve the object, in a fuel injection control system for an internal combustion engine in which fuel discharged from a low pressure fuel pump is supplied to a fuel injection valve with its pressure boosted by a high pressure fuel pump, while a lowering process of lowering feed pressure or the discharge pressure of a the low pressure fuel pump, the lowering process is suspended and restarted with reference to the tendency of change in an integral term used in a proportional-integral control of the duty cycle of the high pressure fuel pump.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: July 7, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Susumu Kojima
  • Patent number: 9074565
    Abstract: A fuel delivery system including a fuel line and a damper. The fuel line extends to a fuel injector and defines a fuel path. The damper is along the fuel path and includes a flexible member and a stop. A first side of the flexible member faces the fuel path and a second side of the flexible member faces the stop.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: July 7, 2015
    Assignees: DENSO International America, Inc., DENSO CORPORATION
    Inventors: Dhyana Ramamurthy, Steve Roseborsky, Tetsuo Ogato
  • Patent number: 9027534
    Abstract: A compression ignition dual fuel engine supplies natural gas fuel and liquid diesel fuel to each engine cylinder from a common fuel injector. Each fuel injector is fluidly connected to both a liquid fuel common rail and a gaseous fuel common rail. The engine includes a surplus gas system for capturing surplus gas, such as evaporated gas from the gaseous fuel supply and pressure control system, or left over pressurized natural gas produced by engine shut down. Rather than being vented to atmosphere, the surplus gas can be burned in the engine when operating conditions present burn opportunities.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: May 12, 2015
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Alan Stockner, Mark F. Sommars
  • Publication number: 20150114351
    Abstract: An improved multi-fuel supply and co-injection system and method for powering internal combustion and turbine engines, whereby various combinations of fuels, both liquid and gaseous, may be mixed together and fed into the system, under the real-time control of a microprocessor responding to a variety of sensors and acting on a variety of control devices, all working together in a manner designed to enhance the utilization of the thermal content of the various fuels, and in particular to enhance the combustion efficiency and increase the power output while decreasing the consumption of fuel, calculated both by quantity and by cost and whereby the liquid fuel lubricates the moving parts of the injection system.
    Type: Application
    Filed: January 6, 2015
    Publication date: April 30, 2015
    Inventor: Morten A. Lund
  • Patent number: 9016261
    Abstract: For a pressure relief device of an injection system of an internal combustion engine, for an injection system of an internal combustion engine having a pressure relief device and in a pressure relief method of an injection system of an internal combustion engine, a defined fuel pressure of the injection system is reduced to a defined fuel residual pressure upon exceeding a pressure limit above a defined fuel pressure, permitting emergency operation of the internal combustion engine.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: April 28, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Daniel Anetsberger, Reinhard Barth
  • Publication number: 20150096536
    Abstract: Disclosed is a pulse damper using a composite spring device for eliminating pulse waves in a plunger pump for supplying fuel, which includes a spring body, and a body for receiving an O-ring spacer supported by an internal O-ring cap, wherein a low pressure coil spring and a high pressure disc spring are arranged in a line inside the spring body so that the low pressure oil spring primarily works and then stops by making a low pressure spring cover and a low pressure spring pad contact a low pressure spring stopper, and secondarily the high pressure disc spring works and then stops by making a high pressure spring pad mounted on one end of a spring guide shaft connected to a piston contact a high pressure spring stopper.
    Type: Application
    Filed: April 12, 2013
    Publication date: April 9, 2015
    Inventor: Byoung-Chan Hwang
  • Patent number: 8950379
    Abstract: A system for a vehicle includes a pump control module, an adjustment determination module, and an adjusting module. The pump control module selectively disables pumping of a fuel pump that is driven by a spark ignition direct injection (SIDI) engine. A predetermined period after the pumping of the fuel pump is disabled, the adjustment determination module determines a pressure adjustment for a first fuel rail pressure measured using a fuel rail pressure sensor. The adjusting module generates a second fuel rail pressure based on the pressure adjustment and the first fuel rail pressure.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: February 10, 2015
    Inventors: Rafat F. Hattar, Jeffrey M. Hutmacher, Paul D. Donar, Alexander Michel, Daniel Weinand, Dieter Wiedenhöft
  • Patent number: 8954258
    Abstract: A pressure-reducing regulator for CNG fuel includes a high pressure sensor that detects fuel pressure at an inlet, a filter element that filters fuel, an orifice that provides access to a pressure reduction chamber, and a movable pintle located within the orifice, such that a flow rate of fuel through the orifice varies according to a position of the pintle within the orifice. The pressure-reducing regulator further includes a motor that moves the pintle, a low pressure sensor that detects fuel pressure at an outlet and a control unit comprising a processor. The process is configured for reading data from the high pressure sensor, data from the low pressure sensor and vehicle data from an engine, calculating a desired position of the pintle based on the sensor data and the vehicle data, and transmitting a signal to the motor for moving the pintle to the desired position.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: February 10, 2015
    Inventors: Roger Mark Toale, George Takahiro Suzuki
  • Patent number: 8950381
    Abstract: A fuel supply unit (1) is provided e.g. a carburetor or a low pressure injection system of an internal combustion engine. The fuel supply unit (1) includes a main air passage (3), which has a throttle valve (8, 9) mounted therein and the throttle valve (8, 9) includes a throttle shaft (8) extending between two to one another opposite located shaft sides (6, 7). A control module (2) for the fuel supply (2) is mounted to one (7) of the shaft sides (6, 7), which control module (2) includes throttle position detecting means (30; 300) for monitoring the position of the throttle valve (8, 9), and fuel valve means (60) for controlling the fuel supply to the main air passage (3). Also, an ignition system is provided which is able to control the ignition timing with respect to status of the at least one of the means (30; 300, 40, 60, 100) in the control module (2) in order to at least control the idle speed of the engine.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: February 10, 2015
    Assignee: Husqvarna AB
    Inventors: Mikael Larsson, Bo Carlsson, Björn Landén, Mats Lavenius
  • Patent number: 8944030
    Abstract: The fuel supply apparatus optimizes the timing of performing the fuel pressure change indication and the fuel injection timing to suppress the real fuel injection amount from being differentiated from the target fuel injection amount even at the time of the fuel pressure being changed, thereby improving fuel consumption. The ECU judges that the fuel pressure change request is generated (“YES” in Step S11), and calculates the change retarding time t1 (Step S12) when the fuel pressure is at the low pressure side, and the ECU determines that the vehicle is in the warming-up state, or that the fuel is at the high temperature. The ECU sets the change timing to avoid the timing of injecting the fuel from overlapping the changing timing of the fuel pressure with reference to the injection timing of the fuel injection control (Step S13).
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: February 3, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toru Suda, Koji Yoshida, Katsunori Kamiya
  • Publication number: 20150027412
    Abstract: An engine fuel control system includes a fuel metering valve operable to control the flow of fuel between a supply line and a delivery line. The delivery line is configured to receive fuel from one or more fuel pumps. The engine fuel control system further includes a pressure raising arrangement which receives the fuel flow from the delivery line and raises the fuel pressure therein. The engine fuel control system further includes a pressure sensor arranged to sense the pressure of the fuel in the supply line between the one or more fuel pumps and the fuel metering valve, or to sense the pressure of the fuel in the delivery line between the fuel metering valve and the pressure raising arrangement.
    Type: Application
    Filed: June 4, 2014
    Publication date: January 29, 2015
    Inventor: Nigel HENSON
  • Patent number: 8935078
    Abstract: A bi-fuel and dual-fuel engine variable pressure fuel system is presented facilitating individual or simultaneous use of liquid and gaseous fuels including natural gas and gasoline, through employment of a variable output pressure gaseous fuel regulator incorporating an attached hydraulic amplifying structure communicating with a relatively low pressure hydraulic servo circuit that may in turn communicate with a variable pressure automotive liquid fuel system to facilitate relatively high pressure gaseous fuel injection.
    Type: Grant
    Filed: January 14, 2012
    Date of Patent: January 13, 2015
    Inventor: Anthony Richard Lorts
  • Patent number: 8931261
    Abstract: A pump component is removed from a port of a suction-side fluid cavity of a high-pressure fluid pump. The pump component performs a pump function for the high-pressure fluid pump. A primary coupler connects to the port. The pump component connects to the primary coupler. A diverter fluid passage diverts a low-pressure fluid from the primary coupler to an auxiliary fluid delivery system. The primary coupler communicates the low-pressure fluid through the pump component and primary coupler to the port.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: January 13, 2015
    Assignee: Cummins Emission Solutions Inc.
    Inventors: John T. Carroll, III, Laszlo D. Tikk
  • Publication number: 20140366845
    Abstract: A method, comprising: during engine cylinder operation with fuel from a first injector and not a second injector: increasing a rail pressure of a fuel rail coupled to the second injector in response to a temperature increase of a tip of the second injector. In this way, by raising the rail pressure of a fuel rail coupled to the second injector in response to a temperature increase of a tip of the second injector, the method may be utilized to prevent a vapor space from forming within the tip of the second injector which is exposed to the heat of combustion within the engine cylinder. By preventing a vapor space from forming, the method may be used to prevent fuel distillation in the tip of the second injector during periods where the engine cylinder is operating with fuel from a first injector and not the second injector.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 18, 2014
    Inventors: Ulrich Kramer, Michael Damian Czekala, Ross Dykstra Pursifull
  • Publication number: 20140360471
    Abstract: In a control system that includes a pressure accumulating portion that supplies CNG to a fuel injection valve and a regulator that adjusts a pressure in the pressure accumulating portion to a set pressure and of which a valve element opens when CNG is supplied to the pressure accumulating portion and closes when supply of CNG to the pressure accumulating portion is shut off, a control parameter relating to a combustion state in an internal combustion engine is controlled on the basis of a length of a period during which an opening degree of the valve element reduces from a first predetermined opening degree to a second predetermined opening degree when the pressure in the pressure accumulating portion is adjusted to the set pressure by the regulator.
    Type: Application
    Filed: December 19, 2012
    Publication date: December 11, 2014
    Applicants: AISAN KOGYO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kouseki Sugiyama, Satoshi Taniguchi, Masahiko Masubuchi, Hiroshi Eto
  • Patent number: 8905001
    Abstract: A fuel-pumping system for a fuel includes at least one reservoir providing a first volume for the fuel and a second volume for a compression fluid, a separator membrane between the first volume and the second volume, an inlet port of the at least one reservoir for feeding the fuel to the first volume, an outlet port of the at least one reservoir for discharging the fuel at a high pressure from the first volume, a fluid port of the at least one reservoir for supplying or removing the compression fluid to or from the second volume. An operating method and a fuel-injection system are also disclosed.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: December 9, 2014
    Assignee: Volvo Technology Corporation
    Inventor: Staffan Lundgren
  • Patent number: 8899202
    Abstract: 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 can 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.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: December 2, 2014
    Assignee: Zama Japan Kabushiki Kaisha
    Inventors: Takumi Nonaka, Hideki Watanabe
  • Patent number: 8903630
    Abstract: Methods and systems are provided for fuel systems including a gaseous fuel. Temporary flow restrictions in the fuel line of a first gaseous fuel may be addressed by temporarily shifting to cylinder operation with a second liquid fuel. Upon resumption of first fuel operation, if the flow restriction persists, a diagnostic code may be set and cylinder operation with the second fuel may be restarted.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 2, 2014
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 8886439
    Abstract: Disclosed is a method for the control and regulation of an internal combustion engine (1), comprising an independent common rail system on the A-side and an independent common rail system on the B-side. During normal operation, the rail pressure (pCR(A), pCR(B)) is controlled in each common rail system via a low pressure-side suction throttle (4A, 4B) as the first pressure-adjusting element in a rail pressure control loop and, at the same time, the rail pressure (pCR(A), pCR(B)) is subjected to a rail pressure disturbance variable via a high pressure-side pressure control valve (11A, 11B) as a second pressure-adjusting element, by means of which a pressure control valve volume flow is redirected via the high pressure-side pressure control valve (11A, 11B) from the rail (6A, 6B) into a fuel tank (2).
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: November 11, 2014
    Assignee: MTU Friedrichshafen GmbH
    Inventor: Armin Dölker
  • Patent number: 8863501
    Abstract: The invention relates to an injection system for injecting a fluid into a filter provided in an exhaust system, comprising at least two modules and at least one pressure compensation volume (44, 46, 48, 54, 56, 58), which is designed for feeding fluid to at least one of the modules and hydraulically connects at least two of the modules. Each module comprises at least one injection unit (40, 50, 60) designed for injecting fluid into the exhaust system.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: October 21, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Volker Reusing, Chris Weirauch, Stefan Stein
  • Patent number: 8844501
    Abstract: The invention relates to a control and regulation method for an internal combustion engine having a common rail system, wherein a rail pressure is regulated in normal operation in that a first actual rail pressure is determined via a first filter from the rail pressure, an offset is calculated from a target rail pressure and the first actual rail pressure, a variable is calculated via a pressure regulator from the offset and a PWM signal having a first PWM frequency (f1) for activation of a control process is determined in dependence on the variable.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: September 30, 2014
    Assignee: MTU Friedrichshafen GmbH
    Inventor: Armin Dölker
  • Patent number: 8844503
    Abstract: 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.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 30, 2014
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Joseph A. Worthington, Norman C. Blizard, David P. Genter, Gregory S. Franks, Michael F. Mattern, Thomas O. Hahn, James L. Walls, Edward N. Linen
  • Patent number: 8849547
    Abstract: In a common rail system having two electrically controlled actuating elements, e.g., a metering unit at the input side of a high-pressure pump and a pressure regulating valve on the common rail, different fuel delivery quantities are able to be set in the common rail system while the vehicle is stationary, independent of the current engine load, by controlling operating points via one of the actuating elements and subsequently regulating the other actuating element. Control currents of the actuating elements correspond to the operating points. These control currents, or differences of control currents, are compared to target values to enable an evaluation of the common rail system.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: September 30, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Michael Hackner, Stefan Hoerenberg
  • Patent number: 8838364
    Abstract: A control device of a spark-ignition gasoline engine is provided. The control device includes a controller for operating the engine body by controlling at least a fuel injection valve, an ignition plug, and a fuel pressure variable mechanism. Depending on the engine load range, the controller sets the combustion mode to a compression-ignition mode or a spark-ignition mode. In each mode, the controller also controls the fuel pressure, and the timing of fuel injection and ignition. The controller may also performs external EGR control in each mode.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: September 16, 2014
    Assignee: Mazda Motor Corporation
    Inventors: Kazuhiro Nagatsu, Masahisa Yamakawa, Kouhei Iwai, Yoshihisa Nou, Noriyuki Ota, Kazutoyo Watanabe, Naoya Watanabe, Hiroyuki Kurita, Shuji Oba, Tatsuya Koga
  • Patent number: 8833343
    Abstract: A system and method for operating a fuel system that supplies fuel to a plurality of injectors in an internal combustion engine via a first pump and a second pump with a bypass circuit returning fuel from between the first and second pumps to a fuel tank, the pumps connected in series, is provided. The bypass circuit increases its restriction to increase injection pressure during selected conditions.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: September 16, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Dequan Yu
  • Publication number: 20140251277
    Abstract: A quill connector for a fuel system in an engine includes an elongate quill body defining a fuel conduit having a proximal accumulator segment, and a flow limiter subassembly, for limiting oversupplying of a pressurized fuel, positioned at least partially within the accumulator segment. The subassembly includes a seat component attached to the elongate quill body and supporting a guide component wherein a hydraulically actuated valve and a biaser are disposed. The valve is movable to a closed position during supplying pressurized fuel to a fuel injector, to interrupt a flow of the pressurized fuel thereto.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: CATERPILLAR, INC.
    Inventor: Michael D. Gerstner
  • Patent number: 8831857
    Abstract: Methods and systems are provided for operating a fuel system configured to deliver a gaseous fuel to an engine. Following tank refilling, the fuel composition is selectively updated based on fuel tank pressure, temperature, and air content data. When the engine is subsequently restarted, the fuel rail is primed for a duration based on the updated composition.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: September 9, 2014
    Assignee: Ford Motor Company of Australia Limited
    Inventors: Adam Nolan, Jamie Terence Slaymaker, Andrew Paul Chee Aun Wong, Phuoc Bui Buiquang
  • Patent number: 8820299
    Abstract: An object of the invention is to detect, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump, a failure in the fuel injection system including the high pressure fuel pump with high accuracy. To achieve the object, in the fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump according to the invention, when a discharge failure in the high pressure fuel pump is detected, the discharge pressure of the low pressure fuel pump is increased. Then, it is determined whether a discharge failure in the high pressure fuel pump occurs or not. If occurs, it is concluded that the fuel injection system including the high pressure fuel pump is in failure.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: September 2, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Susumu Kojima
  • Patent number: 8807121
    Abstract: A pressure control device controls a pressure of fuel supplied from a fuel tank to an engine via a fuel pump. The pressure control device includes a valve device, a first force-applying device and a second force-applying device. The valve device is provided in a path of the fuel from the fuel pump to the engine and comprising a valve and a spring. The valve is movable in an opening direction and a closing direction for permitting and preventing flow of the fuel from the fuel pump to the engine, respectively. The spring applies a first force to the valve in the closing direction. The first force-applying device is operable to apply a second force to the valve in the opening direction depending on the pressure of the fuel supplied from the fuel pump.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: August 19, 2014
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventor: Masaki Ikeya
  • Patent number: 8812215
    Abstract: A fuel injection system for an internal combustion engine is provided which calculates the quantity of fuel required to bring the pressure in a fuel accumulator into agreement with a target pressure and then control an operation of a high-pressure pump based on the required quantity. Even in the absence of a change in pressure in the accumulator, the system controls the high-pressure pump based on the required quantity. Specifically, the system calculates a feedback fuel quantity required to compensate for a difference between the required quantity and a quantity of the fuel actually supplied to the accumulator, in other words, leans such a quantity difference to correct the required quantity, thus resulting in an enhanced response of the system to control the high-pressure pump to a change in pressure in the accumulator.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: August 19, 2014
    Assignee: Denso Corporation
    Inventors: Kouichi Sugiyama, Koji Ishizuka
  • Publication number: 20140209066
    Abstract: A control system for a dual-fuel engine is disclosed. The control system may have a gaseous fuel injector having a nozzle located at a first air intake port of a cylinder of the engine and configured to inject a variable amount of gaseous fuel radially into the cylinder based on at least one of a load and speed of the engine. The control system may also have a liquid fuel injector configured to inject a fixed amount of liquid fuel axially into the cylinder based on the at least one of the load and speed of the engine. The control system may additionally have a regulator configured to selectively adjust a flow of gaseous fuel to the gaseous fuel injector and at least one sensor configured to generate a signal indicative of a performance parameter of the engine. The control system may also have a controller in communication with the regulator and the at least one sensor. The controller may be configured to selectively cause the regulator to adjust the flow of gaseous fuel based on the signal.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: ELECTRO-MOTIVE DIESEL, INC.
    Inventors: Scott B. Fiveland, Deep Bandyopadhyay, Edward J. Cryer