Electric Regulator Patents (Class 123/458)
  • Patent number: 10309547
    Abstract: A solenoid includes a molded coil having a hole at the center of a coil of a plurality of turns, a solenoid body having a case covering the outer perimeter of the molded coil, a movable plunger inserted in the hole, and a magnetic attraction portion disposed in a direction in which the plunger is moved and attracted by magnetic force produced by the coil, an annular plate adjacent to the coil of the molded coil opposite to the solenoid body, and a sleeve facing the magnetic attraction portion via an air gap and supporting one end of a rod connected to the plunger, in which a magnetic circuit L is formed through the magnetic attraction portion, the case, the sleeve, and the plunger, and back to the magnetic attraction portion, and the plunger has at least one outer edge extension formed by an outer edge portion extended axially.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: June 4, 2019
    Assignee: EAGLES INDUSTRY CO., LTD.
    Inventor: Shuji Fukunaga
  • Patent number: 10247126
    Abstract: 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.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: April 2, 2019
    Assignee: Continental Automotive GmbH
    Inventor: Gerald Behrendt
  • Patent number: 10072558
    Abstract: A compression-ignition low octane gasoline engine. The engine uses low octane gasoline and a compression-ignition method, does not require a spark plug, and compared with ordinary gasoline engines, increases thermal efficiency by approximately 40% and reduces green-house effects caused by emissions by approximately 45%. The “compression-ignition” of the low octane gasoline engine is a diffusion charge compression-ignition, differing from a homogeneous charge compression-ignition. The compression ratio in a cylinder can be 14 to 22, while an ordinary gasoline engine has a compression ratio of 7 to 11. The low octane gasoline engine has a simple structure, easy combustion control, a low noise level, and a low failure rate. As the low octane gasoline can be free of aromatic hydrocarbons, and not require the addition of antiknock agents such as MTBE and MMT, the present novel gasoline engine is a highly efficient, clean, and environmentally friendly internal combustion engine.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: September 11, 2018
    Inventor: Xiangjin Zhou
  • Patent number: 10030648
    Abstract: Fault detection and response systems and processes can be used for pumps, e.g., pump/motors used in hybrid vehicles. The fault detection systems determine when certain operating conditions, which may affect the proper operation of the system, occur. The response systems take appropriate action based on which fault conditions are triggered. Example fault detection systems and processes include detection systems for different types of leaks, sensor malfunctions, or operation errors.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: July 24, 2018
    Assignee: Eaton Intelligent Power Limited
    Inventors: Michael Anthony Stoner, Thomas D. Hawkins, Douglas D. Simpson
  • Patent number: 10030649
    Abstract: A high-pressure pump includes a plunger, a cylinder, a pressuring chamber, a pump body, a main fuel chamber, an auxiliary fuel chamber and a return passage. The cylinder slidably houses the plunger therein. The pump body houses the cylinder and has an end surface on an opposite side of the pump body relative to the pressurizing chamber in an axial direction. The main fuel chamber is in the pump body. The auxiliary fuel chamber has a side defined by one end of the cylinder on an opposite side of the cylinder relative to the pressurizing chamber. The return passage is inside the pump body and is in fluid communication with an external cooling unit. Fuel leaking out from the pressurizing chamber through a clearance between the cylinder and the plunger is collected inside the auxiliary fuel chamber, and the collected fuel flows toward the external cooling unit through the return passage.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: July 24, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hideaki Ukai, Eiji Itoh, Hiroshi Inoue
  • Patent number: 9920703
    Abstract: At least after off of an injection pulse of partial lift injection, a first filtered voltage Vsm1 being a negative terminal voltage Vm of a fuel injection valve filtered by a first low-pass filter having a first frequency f1 as a cutoff frequency, the first frequency f1 being lower than a frequency of a noise component, is acquired, and a second filtered voltage Vsm2 being the negative terminal voltage Vm filtered by a second low-pass filter having a second frequency f2 as a cutoff frequency, the second frequency f2 being lower than the first frequency f1, is acquired. Time from a predetermined reference timing to a timing when a difference Vdiff (=Vsm1?Vsm2) between the filtered voltages has an inflection point is calculated as voltage inflection time Tdiff, and the injection pulse of the partial lift injection is corrected based on the voltage inflection time Tdiff.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: March 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Katsurahara, Nobuyuki Satake
  • Patent number: 9920704
    Abstract: At least after off of an injection pulse of partial lift injection, a difference between a first filtered voltage being a negative terminal voltage of a fuel injection valve filtered by a first low-pass filter and a second filtered voltage being the terminal voltage filtered by a second low-pass filter is calculated, and time from a predetermined reference timing to a timing when the difference between the filtered voltages has an inflection point is calculated as voltage inflection time. Subsequently, an injection quantity corresponding to current voltage inflection time is estimated for each of injection pulse widths with a relationship between the voltage inflection time and the injection quantity, the relationship being beforehand stored for each of the injection pulse widths.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: March 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Katsurahara, Nobuyuki Satake, Keisuke Yanoto
  • Patent number: 9920683
    Abstract: Various methods and systems are provided for maintaining combustion stability in a multi-fuel engine. In one example, a system comprises a first fuel system to deliver liquid fuel to at least one cylinder of an engine, a second fuel system to deliver gaseous fuel to the at least one cylinder, and a controller. The controller is configured to supply the gaseous fuel to the at least one cylinder, inject the liquid fuel to the at least one cylinder thereby to ignite the liquid fuel and the gaseous fuel in the at least one cylinder via compression-ignition, and adjust an amount of the gaseous fuel relative to an amount of the liquid fuel based on a measured parameter associated with auto-ignition of end gases subsequent to the compression-ignition of the liquid fuel.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: March 20, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Daniel Yerace, Adam Edgar Klingbeil, James Robert Mischler
  • Patent number: 9920727
    Abstract: To reduce collision noise created by the operation of an electromagnetic suction valve provided on a high pressure fuel supply pump. In the present invention, in order to achieve the above object, the mass of a member which collides by magnetic attractive force is reduced to reduce the noise to be generated. The thus configured present invention provides the following advantageous effects. The noise generated when a core and an anchor collide with each other by magnetic attractive force depends on the magnitude of the kinetic energy of a moving element. The kinetic energy to be consumed in the collision is only the kinetic energy of the anchor. The kinetic energy of a rod, being absorbed by a spring, does not contribute to the noise; thus, the energy when the anchor and the core collide with each other can be reduced, whereby the noise to be created can be reduced.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: March 20, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tatsuo Kawano, Kenichiro Tokuo, Satoshi Usui, Hiroyuki Yamada, Katsumi Miyazaki
  • Patent number: 9897016
    Abstract: On the basis of a decrease in a high-pressure detection value and a low-pressure detection value during fuel control using a CNG injector, an electronic control unit automatically switches the combustion control to combustion control using a gasoline injector even when the amount of CNG remaining is insufficient. When the first shutoff valve is forcibly switched to an closed state by inputting a forcible shutoff command of a first shutoff valve to a terminal and the combustion control using the CNG injector is performed, a switching process to the combustion control using the gasoline injector is inhibited regardless of the decrease in the high-pressure detection value and the low-pressure detection value.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: February 20, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Akito Onishi, Hirotaka Shirasawa
  • Patent number: 9885310
    Abstract: Methods and systems are provided for operating a lift pump of an engine fuel system. In one example, a method may comprise closed loop operating a lift pump of a fuel system based on a difference between a desired fuel rail pressure and an estimated fuel rail pressure, and open loop operating the lift pump to the desired fuel rail pressure in response to a fuel flow rate in a direction of a fuel rail through a check valve positioned between the lift pump and the fuel rail decreasing to a threshold. Thus, outputs from a fuel rail pressure sensor may not be used to adjust lift pump operation when an amount of fuel flowing to the fuel rail decreases to a threshold.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 6, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Justin Trzeciak, Joseph Norman Ulrey
  • Patent number: 9874128
    Abstract: A fluid injector includes a valve assembly constructed and arranged to control flow of fluid from an inlet to an outlet of the injector. A metal housing surrounds at least a portion of the valve assembly. A plastic body is molded over at least a portion of the housing. A distal end of the body defines an integral stepped portion extending from the body. A carrier surrounds at least the distal end of the body. A seal member is in contact with at least the stepped portion and a surface of the carrier to prevent liquid from entering a space between the housing and the body.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: January 23, 2018
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Robert W. McFarland, Todd M. Detweiler, Keith A. Shaw
  • Patent number: 9856844
    Abstract: A fuel pump for a direct injection system having: a pumping chamber; a piston, which is mounted in a sliding manner on the inside of the pumping chamber; an intake channel, which originates from a wall of the pumping chamber and has a housing portion; an intake valve, which is inserted into the housing portion of the intake channel; and a locking ring nut with an annular shape, which is threaded and is screwed into the housing portion of the intake channel so as to strike against the intake valve; the housing portion has an annular abutment, which reduces the diameter of the housing portion and against which the intake valve strikes; the locking ring nut is screwed into the housing portion with a tightening force that is sufficient to determine a plastic deformation of the annular abutment against the intake valve.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: January 2, 2018
    Assignee: MAGNETI MARELLI S.p.A.
    Inventors: Michele Petrone, Enrico Vezzani, Massimo Mattioli
  • Patent number: 9850867
    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: Grant
    Filed: December 19, 2012
    Date of Patent: December 26, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Kouseki Sugiyama, Satoshi Taniguchi, Masahiko Masubuchi, Hiroshi Eto
  • Patent number: 9845778
    Abstract: A vehicle includes a residual pressure holding valve provided downstream a feed pump of a fuel to hold a pressure in a fuel pipe leading to the port injection valve. Residual pressure holding valve is opened to return the fuel in the fuel pipe to the fuel tank when the pressure in the fuel pipe exceeds a valve opening pressure, and closed when the pressure in the fuel pipe is lower than the valve opening pressure. At the time of a request to reduce a target pressure of the fuel to be supplied to the electric feed pump, a control device refrains from causing the target pressure to decrease when a load of the engine is smaller than a prescribed value, and causes the target pressure to decrease when the load of the engine is greater than the prescribed value.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: December 19, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Ryuhei Mitsuoka
  • Patent number: 9831508
    Abstract: A fuel injection apparatus includes a valve element provided with a flow passage allowing a fuel to flow therethrough, a valve seat which the valve element will contact with or separate from, and a casing accommodating therein the valve element and the valve seat. During valve opening in which the valve element is separated from the valve seat, the fuel flowing through the flow passage is discharged through a gap between the valve element and the valve seat. A direction in which the valve seat is placed relative to the valve element is the same as a direction of the fuel flowing in the flow passage. The fuel injection apparatus further includes a discharge-side flow passage in which the fuel to be discharged during valve opening is allowed flow. The discharge-side flow passage is formed outside an outer peripheral portion of the valve seat.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 28, 2017
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: Sadatsugu Nagata
  • Patent number: 9745937
    Abstract: The required fuel supply amount of an internal combustion engine is reduced by limiting the throttle opening when a high-pressure fuel pump is required to discharge fuel that exceeds the fuel delivery capacity thereof. Further, when the throttle opening is limited, the operation of a return valve, through which fuel and vapor thereof can be discharged from the high-pressure fuel pump, is prohibited. By performing the abovementioned control, a reduction in the fuel delivery amount of the high-pressure fuel pump due to the operation of the return valve is prevented when there is a possibility that the fuel deliver amount of the high-pressure fuel pump runs short and the fuel supply amount of the internal combustion engine runs short.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: August 29, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Tokuda
  • Patent number: 9657700
    Abstract: An inlet valve arrangement for a pump head of a fuel pump for use in a common rail fuel injection system comprises an inlet valve member moveable between open and closed positions to control the flow from a source of low-pressure fuel to a pumping chamber of the fuel pump. The inlet valve member is arranged to open in response to the pressure difference between the fluid pressure of fuel on an inlet side of the inlet valve member and the fluid pressure in the pumping chamber exceeding a threshold value. The inlet valve arrangement comprises means for selectively applying a closing force on the inlet valve member to bias it toward the closed position, such that, in use, the application of the closing force by said means acts to increase the threshold value of the pressure difference at which the inlet valve member opens.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: May 23, 2017
    Assignee: Delphi International Operations Luxembourg SARL
    Inventors: Robert Schanz, Paul Buckley, Rainer Jorach
  • Patent number: 9624867
    Abstract: Proposed is a method for open-loop and closed-loop control of an internal combustion engine (1), the rail pressure (pCR) being controlled via a low pressure-side suction throttle valve (4) as the first pressure-adjusting element in a rail pressure control loop. The invention is characterized in that a rail pressure disturbance variable is generated to influence the rail pressure (pCR) via a high pressure-side pressure control valve (12) as the second pressure-adjusting element, by means of which fuel is redirected from the rail (6) into a fuel tank (2).
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: April 18, 2017
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker
  • Patent number: 9587578
    Abstract: 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.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: March 7, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Mark Meinhart, Joseph F. Basmaji, Ross Dykstra Pursifull, Hao Zhang
  • Patent number: 9528610
    Abstract: An injection valve assembly includes a valve body having a central longitudinal axis and a cavity with fluid inlet and outlet portions, a valve needle axially movable in the cavity to control a fluid flow through the fluid outlet portion. The valve needle includes a radially extending retainer element. An electro-magnetic actuator unit including an armature axially movable in the cavity and designed to actuate the valve needle via the retainer element, and a pole piece fixedly coupled to the valve body and including an inner recess, the retainer element being at least partially arranged in the inner recess. The pole piece includes a stop element extending radially into the inner recess of the pole piece. The stop element has a stop surface facing the fluid outlet portion and the retainer element. The stop surface of the stop element limits the axial movement of the retainer element.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: December 27, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Francesco Lenzi, Valerio Polidori, Stefano Filippi
  • Patent number: 9506428
    Abstract: A system which includes a turbo bypass switching valve (BSV) positioned at a beneficial location as a direct mount on an air box to achieve compliance to OBD hose-off requirement via electronic actuation of the BSV and monitoring of the fuel tank pressure sensor for pressure change. When the turbocharger unit is generating pressurized air, the turbo BSV is open, and vapor is passing through the purge valve, some level of vacuum in the fuel tank is sensed. By closing the BSV, flow through the venturi is reduced, producing both less vacuum and a change in fuel tank pressure. The pressure change does not occur if any of the hoses become disconnected. This results in a simple OBD “venture hose off” check without additional components.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: November 29, 2016
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Robert Douglas Jefford, Benjamin Dominick Manton Williams, David William Balsdon, David Rene Forgeron, Adrian Ovidiu Crisan
  • Patent number: 9494116
    Abstract: The invention relates to a fuel injector having a nozzle body (I) and having an injector body (2). In the nozzle body (I) there is formed a high-pressure bore (3) for accommodating a nozzle needle (4) which can perform a stroke movement and via the stroke movement of which at least one injection opening (5) can be opened up or closed off, the fuel injector further including a low pressure chamber (6) coupled to the needle (4) via a coupling device (8) having a first and a second disk-shaped coupler body (9, 10), the low pressure chamber (6) accommodating a piezoelectric actuator (7).
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: November 15, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Nadja Eisenmenger, Hans-Christoph Magel
  • Patent number: 9470191
    Abstract: A pneumatic fuel pressure regulator and a mechanical fuel pressure regulator are disclosed wherein the pneumatic fuel pressure regulator uses a mechanical adjustment screw to position a spring locator and spring force exerted on a diaphragm assembly controlling flow through a base fuel block. The mechanical fuel pressure regulator includes a stepper motor and a threaded drive shaft to control pressure exerted on a diaphragm assembly to regulate passage through a base fuel block. A dual stage system combines the pneumatic and mechanical regulators in a dual base unit having two ports separately controlled by the separate regulators.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: October 18, 2016
    Inventor: Serge V. Monros
  • Patent number: 9429094
    Abstract: A module for managing mass flow and dampening pressure pulsations in the supply line of a gaseous fuelled internal combustion engine comprises a hollow body defining an expanded volume that is fluidly connected directly to a pressure sensor and a temperature sensor. The module is placed along the supply line of a gaseous fuel engine between a fuel pressure increasing device and the fuel rail that supplies fuel to the engine. The module can comprise a filter that filters the impurities from the gaseous fuel supplied to the engine and an overpressure protection device that can vent some of the gaseous fuel from the module to protect it from over-pressurization.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 30, 2016
    Assignee: WESTPORT POWER INC.
    Inventors: Derek S. Newcombe, Buerebista Ursu, Gregory A. Batenburg
  • Patent number: 9394857
    Abstract: A fuel system includes a low pressure fuel system, a high-pressure fuel pump, a common rail, at least one fuel injector, and an engine management system. The engine management system may initiate a recirculating cooling fuel flow through the high-pressure fuel pump for avoiding fuel boiling by either increasing the target pressure of the fuel within the common rail above a threshold level, which triggers opening a high-pressure fuel relief valve, such that fuel supplied by the high-pressure fuel pump is returned to the low pressure fuel system via the high-pressure fuel relief valve, or providing increased internal fuel leakage within the at least one fuel injector, such that fuel supplied by the high-pressure fuel pump is returned to the low pressure fuel system by a return line.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: July 19, 2016
    Assignee: Volvo Lastvagnar AB
    Inventor: Sergi Yudanov
  • Patent number: 9388760
    Abstract: When a given learning performance condition is met, a partial lift injection for opening a fuel injector is performed by an injection pulse which brings about a partial lift state in which a lift quantity of a valve body of the fuel injector does not reach a full lift position, and an integrated value of a drive current is calculated which flows through a drive coil of the fuel injector after an injection pulse of the partial lift injection is turned off. An inductance of the drive coil is calculated in consideration of a direct current superposition characteristic of the drive coil on the basis of the integrated value of the drive current, whereby the inductance of the drive coil is calculated with high accuracy. Then, the lift quantity of the valve body is estimated on the basis of the inductance, whereby the lift quantity of the valve body is estimated with high accuracy.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: July 12, 2016
    Assignee: DENSO CORPORATION
    Inventor: Hiroshi Katsurahara
  • Patent number: 9303601
    Abstract: The evaporative fuel treatment apparatus includes: a fuel tank configured to store fuel for an engine; a sub-tank that communicates with the fuel tank; an adsorber provided inside the sub-tank and configured to adsorb evaporative fuel generated inside at least one of the fuel tank and the sub-tank; a purge mechanism configured to carry out purging for introducing evaporative fuel from the adsorber into the engine; and an in-tank fuel adjustment unit configured to adjust an amount of fuel inside the sub-tank in response to an operating state of the engine, the in-tank fuel adjustment unit including a fuel introduction pump configured to be able to introduce fuel from an outside of the sub-tank to an inside of the sub-tank, the fuel introduction pump being formed of a jet pump configured to be driven by at least part of fuel discharged from the fuel pump.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: April 5, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shuichi Aso
  • Patent number: 9267496
    Abstract: To reduce collision noise created by the operation of an electromagnetic suction valve provided on a high pressure fuel supply pump. In the present invention, in order to achieve the above object, the mass of a member which collides by magnetic attractive force is reduced to reduce the noise to be generated. The thus configured present invention provides the following advantageous effects. The noise generated when a core and an anchor collide with each other by magnetic attractive force depends on the magnitude of the kinetic energy of a moving element. The kinetic energy to be consumed in the collision is only the kinetic energy of the anchor. The kinetic energy of a rod, being absorbed by a spring, does not contribute to the noise; thus, the energy when the anchor and the core collide with each other can be reduced, whereby the noise to be created can be reduced.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: February 23, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tatsuo Kawano, Kenichiro Tokuo, Satoshi Usui, Hiroyuki Yamada, Katsumi Miyazaki
  • Patent number: 9243588
    Abstract: Methods and systems are provided for varying fuel injection pressure in a gaseous-fueled vehicle. A mechanical pressure regulator may be modified to regulate the pressure of gaseous fuel to varying pressures based on electronic pressure feedback and engine operating conditions. In one example, a regulating pressure in a low pressure chamber of a pressure regulator may be varied by controllably flowing gaseous fuel into or out of a reference chamber of the pressure regulator, and the gaseous fuel exhausted from the reference chamber may be directed to the engine for combustion.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: January 26, 2016
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 9080527
    Abstract: In a fuel injection system of an internal combustion engine, fuel is delivered from a high-pressure pump into a fuel rail. The quantity of the delivered fuel is influenced by a quantity control valve which is activated by an electromagnetic actuating device. The level of control of the quantity control valve during the transition from the closed state to the open state of the quantity control valve is provided in the form of a sufficiently flat, descending progression which allows a robust control of the opening motion with regard to the varying specimen properties.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: July 14, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Rainer Wilms, Matthias Schumacher, Joerg Kuempel, Matthias Maess
  • Patent number: 9032933
    Abstract: Provided is a fuel supply control device that performs power supply control of a shut-off valve including a first valve body that is disposed at a fuel supply path ranging from a gaseous fuel tank to a regulator and is opened in advance during power supply, and a second valve body that is opened due to a decrease in a differential pressure between upstream and downstream after the first valve body is opened, and fuel injection control. The fuel supply control device includes a control unit that sets a delay time from an initiation time of power supply to the shut-off valve to an initiation time of fuel injection in correspondence with a first fuel pressure upstream of the shut-off valve and a second fuel pressure downstream of the regulator, and initiates fuel injection after the delay time has passed after the initiation of the power supply to the shut-off valve.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: May 19, 2015
    Assignee: KEIHIN CORPORATION
    Inventors: Yoshio Saito, Yohei Kuriyagawa
  • Patent number: 9004044
    Abstract: The invention relates to a method for supplying a high-pressure pump (1) in a fuel injection system of an internal combustion engine with fuel, wherein for delivery and for controlling the delivered quantity a delivery pump (3) is used, wherein said delivery pump is arranged in a low-pressure circuit (2) and operated by an electric motor and by means of which, depending on the respective selected engine speed, a certain quantity of fuel is fed to the high-pressure pump (1), in which the fuel is first compressed and then fed to a fuel high-pressure accumulator (4). According to the invention, the fuel pressure on the intake side of the high-pressure pump (1) is controlled by means of a pressure control valve (5), wherein a supply of the high-pressure pump (1) with fuel for lubrication and/or cooling via the low-pressure circuit (2) and the delivery pump (3) is assured when the pressure control valve (5) is in the closed position. The invention further relates to a fuel injection system.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: April 14, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Christian Langenbach, Marcus Kristen
  • Publication number: 20150090228
    Abstract: Engines and methods execute a high efficiency hybrid cycle, which is implemented in a volume within an engine. The cycle includes isochoric heat addition and over-expansion of the volume within the engine, wherein the volume is reduced in a compression portion of the cycle from a first quantity to a second quantity, the volume is held substantially constant at the second quantity during a heat addition portion of the cycle, and the volume is increased in an expansion portion of the cycle to a third quantity, the third quantity being larger than the first quantity.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 2, 2015
    Inventors: Nikolay Shkolnik, Alexander C. Shkolnik
  • Patent number: 8992185
    Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: March 31, 2015
    Assignee: Denso Corporation
    Inventor: Hiroshi Inoue
  • 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: 8950380
    Abstract: An internal combustion engine has a fuel pressure sensor, the measured value of which represents a fuel pressure in a fuel reservoir of the internal combustion engine. Fuel is metered from the fuel reservoir into a combustion chamber. In a predefined idle operating state (LBZ) of the internal combustion engine, a speed of the internal combustion engine is regulated so as to reach a specific idling speed. During the regulation process, a value of a manipulated variable for metering the fuel is determined, the value being required to reach the specific idling speed. Furthermore, it is concluded that the measured fuel pressure value contains an error (ERR) when the determined required value of the manipulated variable differs from a reference value (REF) predefined for the predefined idle operating state (LBZ) of the internal combustion engine by at least a given amount or factor.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 10, 2015
    Assignee: Continental Automotive GmbH
    Inventor: Christoph Adler
  • 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
  • Patent number: 8925522
    Abstract: The present invention relates to a fuel metering device for a fuel injection system for internal combustion engines having a plastic housing. According to the invention, the fuel metering device includes a control valve having a valve piston which is actuated by an actuating device. Furthermore, the plastic housing can be produced by spray-coating.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: January 6, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Landenberger, Tilman Miehle, Jochen Wessner
  • Patent number: 8919325
    Abstract: Methods and systems are provided for fuel systems including a gaseous fuel. Fuel rail over-pressure may be addressed by temporarily closing a fuel tank valve of the gaseous fuel and initiating diagnostics routines to determine if a pressure regulator is degraded. If the pressure regulator is degraded, one or more fuel system components may be adjusted to enable fuel rail pressure control.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: December 30, 2014
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 8886441
    Abstract: The invention relates to a method for the open-loop control and the closed-loop control of an internal combustion engine (1), the rail pressure (pCR) being controlled in a closed loop mode in the normal operating state and an emergency operation mode being activated once a defective rail pressure sensor (9) is detected, in which emergency operation the rail pressure (pCR) is controlled in an open loop mode. The invention is characterized in that in the emergency operation mode, the rail pressure (pCR) is gradually increased until a passive pressure relief valve (11) is activated which redirects fuel from the rail (6) to the fuel tank (2) when it is open.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: November 11, 2014
    Assignee: MTU Friedrichshafen GmbH
    Inventor: Armin Dölker
  • Patent number: 8881707
    Abstract: A fuel pressure varies according to whether a fuel pressure sensor and a high-pressure pump have a malfunction or not. In view of this, a first threshold Perr1 is defined for determining whether the fuel pressure sensor has a malfunction and a second threshold Perr2 is defined for determining whether the high-pressure pump has a malfunction. The second threshold Perr2 is greater than the first threshold Perr1. By comparing a detection value of the fuel pressure sensor with the first and the second threshold, a malfunction in the fuel pressure sensor and a malfunction in the high-pressure pump are distinguished from each other. A first fail-safe control or a second fail-safe control is executed according to a portion having a malfunction.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: November 11, 2014
    Assignee: Denso Corporation
    Inventor: Hiroshi Katsurahara
  • 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: 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
  • Patent number: 8833147
    Abstract: Based on a detection signal of a fuel pressure sensor provided in a first fuel injector, an ECU determines whether a fuel pressure in a first fuel injector is increased over a specified amount when a second fuel injector provided with no fuel pressure sensor terminates a fuel injection. When the ECU determines that the fuel pressure in the first fuel injector is increased over a specified amount, it is diagnosed that the second fuel injector does not have a malfunction of continuous injection.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: September 16, 2014
    Assignee: Denso Corporation
    Inventor: Toyomori Tsuiki
  • Patent number: 8833342
    Abstract: A method for regulating a fuel injection system of an internal combustion engine, wherein the fuel injection system includes a high-pressure pump which is associated with a quantity control valve having a solenoid valve electromagnetically operable by a coil for supplying fuel, the quantity control valve regulating the fuel quantity pumped by the high pressure pump and the coil of the solenoid valve being energized according to a setpoint current value in order to close the valve for supplying fuel to the high-pressure pump; when the solenoid valve closes, the setpoint current value is reduced from a first current setpoint value to a second current setpoint value so that an emission of audible noise generated when the solenoid valve closes during operation of the internal combustion engine is at least partially reduced.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 16, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Richter, Peter Roth, Joerg Kuempel, Matthias Maess
  • Patent number: 8826889
    Abstract: The invention relates to a machine tool having working field illumination disposed in a housing, having an illumination mechanism and a transparent element which allows the light from the illumination mechanism to be led out toward the working field. A light beam can be deflected between the illumination mechanism and the transparent element. According to the invention, the transparent element forms a region of the housing.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: September 9, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Brigitte Roth
  • Publication number: 20140238353
    Abstract: Methods and systems for detecting leakage of a liquid fuel into a gas fuel rail of a dual-fuel system for an internal combustion engine are disclosed. The methods and systems include sending an injection signal from a controller to a fuel injector and subsequently injecting gas fuel and liquid fuel into a cylinder for combustion. A pressure in the gas rail detects the pressure in the gas rail over a pre-determined time period after the injection event. A controller measures pressure fluctuations in the gas rail over a pre-determined time period after the injection event. If the pressure in the gas rail fluctuates by more than the pre-determined amount, the controller is programmed to take at least one mitigating action to prevent or limit damage to the engine.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: CATERPILLAR INC.
    Inventors: Cory A. Brown, Michael A. Brown, Steven Thomas Grant, Daniel Reese Puckett, Jr.
  • Patent number: 8793059
    Abstract: In a method for controlling a fuel injection system (10) of an internal combustion engine, wherein the fuel injection system (10) comprises a manifold (24) and a high-pressure pump (20) and a fuel dosing unit (16) is associated with the high-pressure pump (20), wherein the fuel dosing unit (16) controls the amount of fuel delivered, an amount of fuel required for the operation of the internal combustion engine is determined as a function of a correction factor, which is based on a fuel pressure at the inlet of the high-pressure pump (20) and/or on a vapor pressure of the fuel to be delivered.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: July 29, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Albrecht, Frank Mueller, Bernd Schroeder, Jens Wolber, Markus Amler, Timm Hollmann, Christian Wiedmann
  • Publication number: 20140175313
    Abstract: An electro-valve for discharging a common rail while maintaining a minimum pressure, comprising an electro-magnetic coil inside which is arranged a movable plunger, controlling the displacements of a movable axis engaging a ball valve, said movable plunger being urged in the closing position of the ball valve by a spring housed inside a bearing cap, wherein a bottom wall of the bearing cap surrounds an external surface of the movable plunger, wherein a clearance between the external surface of the plunger and an internal wall of the bearing cap is filled with a film of fuel, the opening movement of the plunger causing the fuel to flow from a room situated on top of the plunger to a bore in which the axis is arranged, wherein a sleeve of a controlled thickness is arranged around the plunger within the clearance to set the thickness of said film of fuel.
    Type: Application
    Filed: June 13, 2012
    Publication date: June 26, 2014
    Applicant: Delphi Technologies Holding S.A.R.I.
    Inventors: Michel Marechal, Frederic Sauvage, Christophe Cardon