Fuel Pump Flow Regulation Patents (Class 123/446)
  • Patent number: 11047331
    Abstract: In at least some implementations, a system includes a pump having an electric motor and a pump outlet, a controller coupled to the pump to vary the power provided to the motor to vary the flow rate of liquid discharged from the pump outlet, a pressure regulator having an inlet communicated with the pump outlet, a regulator outlet from which liquid is discharged from the regulator, a bypass outlet through which liquid is discharged from the regulator, and a pressure responsive valve that opens to permit liquid flow through the bypass outlet, and a flow sensor. The flow sensor is communicated with the bypass outlet to sense or determine a flow rate of liquid at or downstream of the bypass outlet, the flow sensor also communicated with the controller to provide an indication of the bypassed liquid flow rate to the controller.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: June 29, 2021
    Assignee: WALBRO LLC
    Inventor: Edward J. Talaski
  • Patent number: 11047380
    Abstract: A high pressure fuel pump includes a pump housing, pressure and damper chambers, a metal diaphragm, a press-fitted portion, and a weld portion. The pressure chamber is provided in the pump housing. The damper chamber is formed by the pump housing and a damper cover. The metal diaphragm damper is arranged in the damper chamber. At the press-fitted portion, an annular surface of the damper cover is press fitted to an annular surface of the pump housing. The weld portion fixes the damper cover to the pump housing at an entire circumference of the press-fitted portion.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: June 29, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi Usui, Shingo Tamura, Katsumi Miyazaki, Sunao Takahashi, Masayuki Suganami, Minoru Hashida
  • Patent number: 11041447
    Abstract: The invention relates to a method to control a fuel pump for a direct injection system of a heat engine provided with a common rail comprising the steps of determining a minimum threshold based on the pressure in the common rail and on the speed of the heat engine, on the temperature of the high-pressure pump and on the inlet pressure of the high-pressure pump; calculating the objective fuel flow rate to be fed by the high-pressure pump to the common rail instant by instant in order to have the desired pressure value inside the common rail; comparing the objective fuel flow rate with the minimum threshold; and controlling the high-pressure pump based on the comparison between the objective fuel flow rate and the minimum threshold.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: June 22, 2021
    Assignee: MARELLI EUROPE S.p.A.
    Inventors: Marco Parotto, Matteo De Cesare, Marco Morelli, Giovanni Prodi, Tommaso Cardellini
  • Patent number: 11015548
    Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 25, 2021
    Assignee: Cummins Inc.
    Inventors: David M. Carey, Syed Shah Jalal, Richard J. Dudek, Ulf Carlsson, Paul Peavler
  • Patent number: 10982637
    Abstract: The invention relates to a roller tappet (1) for a piston pump, in particular for a high-pressure fuel pump, for supporting a pump piston (2) which can move in a reciprocating motion on a cam (3) or eccentric of a drive shaft (4), comprising a tappet body (5) with an end-side recess (6) and two radial bores (7) which lie diametrically opposite one another at the recess (6) and receive a pin (8), on which a roller (10) is rotatably mounted directly or indirectly via a bearing bush (9), wherein at least one radially or obliquely running feed bore (12) is configured in the tappet body (5) in order to supply a lubricating medium to a radial bearing gap (11) which is configured between the roller (10) and the pin (8) or between the roller (10) and the bearing bush (9), which feed bore (12) opens into the recess (6) in the region of an axial bearing gap (13) between the roller (10) and the tappet body (5).
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 20, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Dutt, Florian Fritz, Gerhard Meier, Markus Majer, Martin Hoeller
  • Patent number: 10954870
    Abstract: Disclosed is a method for detecting the direction of rotation of a crankshaft of an engine of a motor vehicle. The detection method includes in particular, when the crankshaft is in a second predetermined angular position between a low angular position and a high angular position of the crankshaft, a step of commanding the closure of a control valve for the intake of fuel into the high-pressure pump, a step of measuring a second pressure value in the high-pressure rail, and a step of detecting a nominal direction of rotation of the crankshaft if the second pressure value measured is greater than or equal to an expected pressure value or of detecting a reverse direction of rotation of the crankshaft if the second pressure value measured is less than the expected pressure value.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: March 23, 2021
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Yves Agnus, Julien Lefevre
  • Patent number: 10946406
    Abstract: The invention relates to an apparatus for metering a medium comprising a base element provided for fastening to a robot, a metering valve movably supported at the base element, and at least one piezo actuator by which the metering valve is movable relative to the base element.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: March 16, 2021
    Inventors: Martin Reuter, Paul Reuter
  • Patent number: 10941738
    Abstract: A method of injecting fuel with a fuel injector includes applying a spill valve current to close a spill valve and applying a control valve current to move a control valve to an injection position. The method also includes discontinuing the application of the spill valve current to open the spill valve and preventing a return of the control valve to a non-injection position while detecting a timing when the spill valve opens.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: March 9, 2021
    Assignee: Caterpillar Inc.
    Inventors: Daniel R. Puckett, Andrew O. Marrack
  • Patent number: 10907600
    Abstract: A fuel pump includes a fuel pump housing with a pumping chamber and an outlet valve bore extending along an outlet valve bore axis; a pumping plunger which reciprocates within a plunger bore along a plunger bore axis which is traverse to the outlet valve bore axis; and an outlet valve assembly. The outlet valve assembly includes an outlet valve seat with an outlet flow passage, wherein a first portion of the outlet valve seat is aligned with the pumping plunger in a direction parallel to the plunger bore axis and wherein a second portion of the outlet valve seat is not aligned with the pumping plunger in a direction parallel to the plunger bore axis and an outlet valve member which is moveable between an unseated position which provides fluid communication through the outlet flow passage and a seated position which prevents fluid communication through the outlet flow passage.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: February 2, 2021
    Inventor: Chad E. Uckermark
  • Patent number: 10883462
    Abstract: A damper device is provided in a flow passage of a fluid. The damper device includes a plurality of diaphragm dampers that are stacked together. Each of the plurality of diaphragm dampers includes a first flexible portion, a second flexible portion, and a rim including a welded portion. A peripheral edge of the first flexible portion and a peripheral edge of the second flexible portion are welded together in the welded portion. Each of the plurality of diaphragm dampers is configured to seal a gas in an inner region between the first flexible portion and the second flexible portion. A coupler that couples the plurality of diaphragm dampers together includes holders that hold the rims of the plurality of diaphragm dampers. A gap is provided between the holder of the coupler and the welded portion of each of the plurality of diaphragm dampers.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: January 5, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, EAGLE INDUSTRY CO., LTD.
    Inventors: Takeyuki Yabuuchi, Shinichi Sugimoto, Osamu Hishinuma, Hiroatsu Yamada, Toshiaki Iwa, Yoshihiro Ogawa, Yusuke Sato
  • Patent number: 10871136
    Abstract: A fuel pump includes a fuel pump housing with a pumping chamber; a pumping plunger which reciprocates within a plunger bore; and an inlet valve. The inlet valve includes a valve body having a valve body bore; an inlet passage; and an outlet passage. The inlet valve also includes a check valve which moves between a seated position and an unseated position, wherein the seated position prevents flow through the outlet passage into the valve body bore and the unseated position permits flow through the outlet passage such that the valve body bore is in fluid communication with the pumping chamber. The inlet valve also includes a valve spool which moves between a first position where the valve spool maintains the check valve member in the unseated position and a second position where the check valve member is able to move to the seated position.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: December 22, 2020
    Inventors: Kenneth J. Dauer, Timothy D. Spegar
  • Patent number: 10865727
    Abstract: A method for controlling at least one switchable valve, a brake impulse that slows down the valve movement being produced during the controlling of the at least one valve. At least one parameter of the brake impulse determines the position and/or the duration of the brake impulse. A parameter is modified, and the reaction of a measurement quantity or of a characteristic feature derived from the measurement quantity is evaluated.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: December 15, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Stephan Jahn, Juergen Graner, Haris Hamedovic, Christian Steinbrecher, Bastian Reineke, Wolfgang Fischer, Andreas Rupp
  • Patent number: 10851767
    Abstract: A pump for supplying high-pressure includes a plunger, a cylinder, a body, and a holder. The uppermost end surface of the cylinder is an end of the cylinder that is closest to the pressurizing chamber. A first gap formed between the outer periphery of the cylinder and the body in the radial direction is smaller than a second gap formed in the radial direction between the inner diameter of the pressurizing chamber and the outer diameter of the plunger. A radial gap is formed in an entire area of the cylinder in an axial direction thereof.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: December 1, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shunsuke Aritomi, Kenichirou Tokuo, Satoshi Usui, Shingo Tamura
  • Patent number: 10837390
    Abstract: A method for ascertaining a setpoint value for a manipulated variable for the actuation of a low-pressure pump in a fuel-supply system for an internal combustion engine having a high-pressure accumulator and a high-pressure pump, the high-pressure pump being operated in a full delivery mode, and the low-pressure pump being actuated so that a pressure provided by the low-pressure pump is reduced, and the setpoint value at which a dip in a delivery quantity of the high-pressure pump is detected is ascertained while taking into account an actuation value of the manipulated variable.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: November 17, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Joerg Kuempel, Alexander Schenck Zu Schweinsberg, Burkhard Hiller, Hans-Friedrich Schwarz, Klaus Joos, Michael Bauer, Werner Hess
  • Patent number: 10837383
    Abstract: Disclosed is a method for estimating an angular position of top dead center for a high-pressure fuel injection pump that forms part of a system for injecting fuel into a motor vehicle engine, the pump including at least one piston moving in a chamber between the top and the bottom dead center, the pump being equipped with a digital control valve for controlling a quantity of fuel, an electrical current being applied to the digital valve as it closes then removed in order to open the digital valve, a movement of the digital valve in the direction of opening creating an induced current which makes it possible to detect a position of start-of-opening of the digital valve. An instant at which the pump piston passes through top dead center is estimated as a function of an instant at which the position of start-of-opening of the digital valve appears.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 17, 2020
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Yves Agnus, Nicolas Girard
  • Patent number: 10808644
    Abstract: A method of preventing an engine stall of a vehicle having a fuel injection device for pressurizing fuel stored in a fuel tank by a high-pressure fuel pump to transmit the fuel to a common rail, and injecting the fuel temporarily stored in the common rail into an engine through an injector may include steps of determining whether or not a drift occurs in an output signal of a high-pressure fuel pressure sensor for measuring fuel pressure at a downstream side of the high-pressure fuel pump, and performing a fuel pressure control by replacing a high-pressure fuel pressure value with a predetermined pressure value based on the output signal of the high-pressure fuel pressure sensor.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: October 20, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jung-Sup Byun, Bon-Chang Koo
  • Patent number: 10731671
    Abstract: In order to improve a compensation reservoir for a hydraulic operating system, in particular for a hydraulic brake system or a clutch system, comprising a housing in the interior of which a storage chamber which is provided for storing hydraulic medium is bounded by a separating element which changes its shape in accordance with a volume of the storage chamber, it is proposed that the housing engages over the separating element in all of its shapes, which correspond to possible volumes of the storage chamber, in a protective manner, that a filling level-indicating region of the separating element changes its position in the housing when the volume which is taken up by the hydraulic medium which is stored in the storage chamber changes, and this position in each case represents a filling level-indicating position, and that the filling level-indicating position which is situated within the housing is visible from outside the housing through a viewing region of the housing.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 4, 2020
    Assignee: Gustav Magenwirth GmbH & Co. KG
    Inventor: Christian Neutsch
  • Patent number: 10711912
    Abstract: (Problem) The invention is to provide to a solenoid valve drive control device, in which though the magnetic path is normally composed (i.e. the plunger is attached to the attracting member), it is never determined by mistake as the dropout, and it is never entered into the reabsorption mode of the plunger. (Resolution Approach) The invention is a solenoid valve drive control device of the invention, in which by controlling of the zero cross timing generation device 72, after application of the electric current to the solenoid 66 is started at zero cross timing by the switching device 68, when the current value that flows to the solenoid 66 detected by the electric current sensing device 78 reaches the circuit protection electric current value Ic (?A), a stabilization mode that repeats the ON-OFF cycle plural times (four times of the total in the Embodiment of FIG. 4), in which application of the electric current to the solenoid 66 is interrupted by the switching means 84, is operated (see A5-A8 in FIG. 4).
    Type: Grant
    Filed: September 3, 2016
    Date of Patent: July 14, 2020
    Assignee: SAGINOMIYA SEISAKUSHO, INC.
    Inventors: Yuji Kanai, Ryusuke Suzuki
  • Patent number: 10662889
    Abstract: The disclosure relates to a control method for controlling at least one injector valve in a fuel injection system of an internal combustion engine. An opening time of the injector valve is selected such that, in a fault situation in the fuel injection system, an opening time of the injector valve is situated in a pressure valley of a pressure oscillation prevailing in a high-pressure region of the fuel injection system.
    Type: Grant
    Filed: February 18, 2018
    Date of Patent: May 26, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Tobias Ritsch, Heiko Zabich, Matthias Bauer
  • Patent number: 10626811
    Abstract: Methods and systems for providing exhaust gas recirculation to a two stroke opposed piston diesel engine are described. In one example, high and low pressure exhaust gas recirculation systems may be activated or deactivated in response to exhaust gas hydrocarbon concentration and particulate matter flow rate from the engine. In addition, operation of the low and high pressure exhaust gas recirculation systems may be responsive to an operating state of a supercharger compressor.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: April 21, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Styles, Eric Matthew Kurtz
  • Patent number: 10612485
    Abstract: Various embodiments may include a method for operating a piezo-actuator in a piezo-operated injector for a fuel injection system comprising: producing a measuring pulse at a position at which the usable signal which is to be measured is expected; then producing a reference pulse which corresponds to the measuring pulse, in the same cycle; subtracting a first actuator voltage measured during the reference pulse from a second actuator voltage measured during the measuring pulse; using a resulting voltage signal difference to calculate a force sensed by the piezo-actuator; and using the force sensed to correct an injection amount for the injector.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: April 7, 2020
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Janos Radeczky, Matthias Scheid
  • Patent number: 10598118
    Abstract: A high-pressure pump includes: a low-pressure chamber, into which low-pressure fuel discharged from a low-pressure pump flows; a pressurizing chamber, which pressurizes the low-low-pressure fuel; and a leak chamber, into which leaked fuel from the pressurizing chamber flows. The leaked fuel of the leak chamber is suctioned into and is pressurized in the pressurizing chamber together with the low-pressure fuel of the low-pressure chamber, so that the leaked fuel is discharged to an outside of the high-pressure pump as high-pressure fuel. Furthermore, a suction check valve, which is placed between the low-pressure chamber and the leak chamber, limits backflow of the leaked fuel of the leak chamber to the low-pressure chamber when the high-pressure pump does not supply the high-pressure fuel.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: March 24, 2020
    Assignee: DENSO CORPORATION
    Inventor: Masaharu Nakaoka
  • Patent number: 10557437
    Abstract: A fuel injection pump (100) provided in a diesel engine, including: an electromagnetic spill valve (20) configured to adjust a fuel injection amount by releasing a pressurized fuel with opening/closing of a spill valve body (23); and an ECU (Engine Control Unit, 50) configured to form a current waveform of drive current of the electromagnetic spill valve (20). The ECU (50), during the warm state, detects a valve-close timing of the electromagnetic spill valve (20), forms an optimum current waveform of drive current based on the detected valve-close timing, and applies drive current with thus formed optimum current waveform to the electromagnetic spill valve (20), whereas, during the cold state, the ECU (50) applies only drive current with a pre-set current waveform to the electromagnetic spill valve (20).
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 11, 2020
    Assignee: YANMAR CO., LTD.
    Inventors: Ryota Iwano, Satoshi Hiroya, Hiroyuki Machiyama, Kosuke Hara, Ryosuke Okamoto
  • Patent number: 10551227
    Abstract: Disclosed is a monitored proportional metering device including a liquid metering pump having an inlet, an outlet, a suction nozzle, and a mechanism for adjusting the flow in the nozzle. The metering device is also includes a detection assembly, the assembly including at least a unit for detecting the pressure variation in the nozzle, which unit is arranged between the first suction valve and the mixing chamber, a water meter at the inlet, a probe for measuring the level in the container of material to be suctioned, a unit for determining the position of the mechanism for adjusting the volume to be suctioned, and a man/machine interface for processing, recording, and displaying the data from the detection unit. Also disclosed are methods for monitoring a metering pump implementing the proportional metering device.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 4, 2020
    Assignee: DOSATRON INTERNATIONAL
    Inventors: Gregory Lucas, Christophe Charriere
  • Patent number: 10539090
    Abstract: A fuel delivery system for a vehicle having an engine configured to selectively operate between a port fuel injection (PFI) mode and a gasoline direct injection (GDI) mode includes a PFI fuel rail having a plurality of PFI injectors configured to supply fuel to the engine during the PFI mode, a GDI fuel rail having a plurality of GDI injectors configured to supply fuel to the engine during the GDI mode, a first GDI fuel supply line fluidly coupled to the GDI fuel rail, a first deactivating GDI fuel pump assembly disposed on the first GDI fuel supply line. The first deactivating GDI fuel pump assembly is configured to selectively transition between an activated mode and a deactivated mode.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: January 21, 2020
    Assignee: FCA US LLC
    Inventors: Kevin B Refalo, Scott K Fisher
  • Patent number: 10519907
    Abstract: A fuel system for a vehicle, where the fuel system comprises a first fuel pump and a second fuel pump, and where the capacity of the first fuel pump is lower than the capacity of the second fuel pump. The advantage of the disclosure is that the supply of fuel to the combustion engine from the fuel system can be optimized with respect to energy usage.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 31, 2019
    Assignee: VOLVO CAR CORPORATION
    Inventors: Kjell Fischer, Stella Johnsson, Joel Johansson, Christoffer Kallerman, Michael Zach
  • Patent number: 10519894
    Abstract: A control device is applied for an internal combustion engine which is provided with a high-pressure fuel pump driven by a driving shaft of the internal combustion engine to discharge a fuel pressurized in a pressurizing chamber, an accumulator accumulating a high-pressure fuel discharged from the high-pressure fuel pump, and a relief valve which is opened when a fuel pressure in the accumulator is higher than a specified pressure in order to return the fuel in the accumulator to a specified chamber where a fuel has lower pressure than a fuel in the pressurizing chamber. An idle speed of the internal combustion engine is increased to a specified speed when the fuel pressure in the accumulator has been higher than a determination pressure, which is lower than the specified pressure, for a first period or longer.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 31, 2019
    Assignee: DENSO CORPORATION
    Inventor: Yasuo Hirata
  • Patent number: 10495020
    Abstract: A control system includes an internal combustion engine and a control device. The internal combustion engine includes a pressurization device. The pressurization device includes a housing having a cylindrical shape, a piston, a pressurization chamber, a piston chamber, a pressurization control chamber, and a switching device configured to selectively connect the pressurization control chamber with a high pressure fuel channel or a low pressure fuel channel. The control device estimates the temperature of the low pressure fuel channel. When the estimated temperature of the low pressure fuel channel is lower than the temperature of the pressurization device, and the temperature of the pressurization device is higher than a predetermined cooling request temperature, the control device controls the switching device to connect the pressurization control chamber with the low pressure fuel channel.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: December 3, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masato Ikemoto
  • Patent number: 10473077
    Abstract: A control device includes a control amount change part that changes an energization control amount of a control valve, an operation detection part that detects an operating condition of the control valve when the energization control amount is changed, a learning part that learns the energization control amount based on the operating condition of the control valve to reduce an operating noise of a high-pressure pump, and a determination part that determines whether or not an operating time of the control valve for the energization control amount is shorter than a time that allows for the detection of the operating condition of the control valve. The learning part prohibits the learning when the operating time of the control valve for the energization control amount is determined to be shorter than the time that allows for the detection of the operating condition of the control valve.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: November 12, 2019
    Assignee: DENSO CORPORATION
    Inventor: Hiroshi Yamaguchi
  • Patent number: 10458379
    Abstract: A fuel injector includes an injector body with a bore; an injector needle located within the bore and engageable with a needle seat to control fuel injection through an injector outlet; an armature member, the armature member being engageable with an armature seat on the injector needle, the injector needle in part and the armature member in part defining a control chamber; an actuator arrangement arranged to control fuel pressure within the control chamber such that fuel pressure variations within the control chamber controls movement of the injector needle relative to the needle seat wherein the actuator arrangement is arranged to be capable of moving the armature member from a seated position in which it engages the armature seat to an unseated position in which the armature member has moved relative to the armature seat in order to bring the control chamber into fluid communication with a low pressure drain.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: October 29, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Thierry Thibault, Cyrille Lesieur, Rodolphe Dratch
  • Patent number: 10428970
    Abstract: A circuit and a method for a digital inlet valve having a shutter moveable between a closed and an open position and actuated by a linear electromagnetic actuator including a movable needle located inside a coil winding connected to a power source by a first electronic switch. An electric current is supplied to the coil winding. A parameter indicative of a movement of the needle is monitored. The electric current supply is adjusted when the monitored parameter exceeds a predetermined value.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 1, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Stefano Nieddu, Andrea Mollar, Tiziano Sorrentino
  • Patent number: 10415520
    Abstract: A fuel supply device supplying a fuel stored in a fuel tank to an engine includes a low-pressure pump configured to feed the fuel, a high-pressure pump configured to compress the fuel discharged from the low-pressure pump and to feed to the engine, a first low-pressure passage member configured to define a first fuel passage from the low-pressure pump to the high-pressure pump, and a second low-pressure passage member configured to define a second fuel passage branched from the first fuel passage at a low-pressure junction portion and joining the first fuel passage at a low-pressure confluence portion, wherein the first fuel passage and the second fuel passage are different in at least one of (i) temperatures of the fuels that flow through the fuel passages and (ii) passage lengths of the fuel passages from the low-pressure junction portion to the low-pressure confluence portion.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: September 17, 2019
    Assignee: DENSO CORPORATION
    Inventors: Masaaki Kato, Hisaharu Takeuchi
  • Patent number: 10371143
    Abstract: A system for determining health of a component is provided. The system includes an operational parameter module associated with the component and in communication with a controller. The controller is configured to receive an operating parameter signal from the operational parameter module. The controller is configured to monitor a change of the operating parameter over a predetermined time period. The controller is configured to compare the monitored operating parameter with a first predetermined threshold. The controller is configured to determine a rate of change of the monitored operating parameter over the predetermined time period. The controller is also configured to compare the determined rate of change with a second predetermined threshold. The controller is further configured to determine the health of the component based, at least in part, on the comparisons with the first and second predetermined thresholds respectively and one or more additional parameters associated with the component.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 6, 2019
    Assignee: Caterpillar Inc.
    Inventors: Andrew W. Billing, Brian G. Wheeler, Michael J. Campagna, Dereck G. Heffron
  • Patent number: 10352254
    Abstract: An internal combustion engine control device for a dual-injection internal combustion engine acquires first and second increase values, which are fuel increase ratios according to respective alcohol concentrations of a fuel injected by cylinder injection and a fuel injected by port injection. The control device determines a basic total injection amount of fuel that should be supplied to each cylinder in the case where the alcohol concentration of the fuel is zero. An amount of fuel injected from a cylinder injection valve is determined as if the alcohol concentration of the fuel were zero. A total injection amount is to correspond to an amount in accordance with the basic total injection amount and both, the first increase value and the second increase value, so that the increase in injected fuel amount is borne by port injection.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: July 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kazuhiro Wakao
  • Patent number: 10337445
    Abstract: A method of operating an engine with dual fuel injection capabilities to address fuel rail over-pressure due to stagnating hot fuel is shown. The method comprises operating an engine cylinder with only port injection, and selectively activating and deactivating the second injector in response to a rail pressure increase of a fuel rail, the fuel rail coupled to the second injector, and deactivating the second injector in response to a rail pressure decrease of the fuel rail to a lower threshold determined based on engine operating conditions. In this way, degradation of the second injector may be reduced while maintaining a desired level of engine performance.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: July 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ethan D. Sanborn, Joseph Lyle Thomas, Daniel Dusa
  • Patent number: 10316787
    Abstract: Provided is a fuel supply device for an internal combustion engine. When fuel pressure in a high-pressure fuel pipe changes as a result of the driving of a high-pressure pump, the changing fuel pressure propagates as pulsation into a low-pressure fuel pipe. A degree of influence of propagation of pulsation decreases as fuel pressure in the low-pressure fuel pipe increases. When the high-pressure pump is in an operating state where the degree of influence of the pulsation of the fuel pressure propagating from the high-pressure fuel pipe on the fuel pressure in the low-pressure fuel pipe is high, boost control for driving a feed pump to raise the fuel pressure in the low-pressure fuel pipe is executed.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: June 11, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Aso, Hideaki Hayashi
  • Patent number: 10273921
    Abstract: A fuel pump unit includes a pump head provided with an axial blind bore within which is arranged a piston extending from an inner end, inside the bore, to an outer end, outside the head, the outer end cooperating with a cam follower and a cam of which rotations reciprocally displace the piston. The pump unit also includes a coil spring axially compressed between pump head and the cam follower and a tubular turret assembly extending toward the cam and provided with a through bore through which extends the piston, the final spirals of the spring being slipped around the outer surface of the turret. The turret is an added part, non-integral to the pump head and, arranged in abutment against an under face of the pump head, the blind bore being coaxial to the through bore arranged in the turret.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: April 30, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventor: Christopher J. McCrindle
  • Patent number: 10273916
    Abstract: An internal combustion engine including an intake passage fuel injection valve for injecting fuel into an intake passage and a cylinder inside fuel injection valve for injecting fuel into a combustion chamber, includes: a fuel pump pressurizing and feeding fuel, which is fed from a fuel tank, to the cylinder inside fuel injection valve; a securing part provided on a cylinder head member of the internal combustion engine to secure the fuel pump; an introducing member having heat conductivity, the introducing member connected to the fuel pump and formed with: a first introducing path for introducing fuel from the fuel tank to the fuel pump; and a second introducing path for introducing fuel from the fuel tank to the intake passage fuel injection valve; and a heat transmitting member transmitting heat between the introducing member and the securing part.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 30, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Kenichi Nozu, Tadanori Minoura, Takeshi Ohshima, Genki Kurimoto
  • Patent number: 10267279
    Abstract: A control valve assembly for controlling fuel pressure in a control chamber of a fuel injector. The control valve assembly comprising a valve member arranged in a bore provided in a valve housing, at least one of the valve member and the valve housing being moveable with respect to the other, wherein the valve member comprises a fuel-receiving cavity arranged to receive fuel that distorts at least a portion of the valve member so as to increase an external dimension thereof.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: April 23, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Ludovic Sauvetre, David Bonneau, Philippe Barbier, Philippe Legrand
  • Patent number: 10260444
    Abstract: A direct injection fuel supply system, in one exemplary implementation, includes a lift fuel pump, a positive displacement pump, at least one fuel injector and an accumulator assembly. The lift pump is adapted to be in fluid communication with a supply of fuel and the positive displacement pump is in fluid communication with and downstream of the lift pump. The at least one injector is in fluid communication with an outlet of the positive displacement pump via a high pressure fuel line. The accumulator assembly includes an accumulator and a valve, where the valve is in direct fluid communication with the high pressure fuel line and the injector. The valve is selectively controlled to at least one of an open state providing fluid communication between the accumulator and the high pressure fuel line and a closed state blocking fluid communication between the accumulator and the high pressure fuel line.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 16, 2019
    Assignee: FCA US LLC
    Inventor: Russell J Wakeman
  • Patent number: 10247181
    Abstract: A high-pressure fuel pump includes a pressurizing chamber for pressurizing fuel, an outlet valve for discharging the fuel pressurized in the pressurizing chamber to an outlet passage, a relief passage for connecting the outlet passage located downstream of the outlet valve and the pressurizing chamber with each other while bypassing the outlet valve. A relief valve device is provided in the relief passage and adapted to open when an internal pressure of the outlet passage becomes higher than that of the pressurizing chamber, thereby providing communication between the outlet passage and the pressurizing chamber. The relief valve includes a relief spring mechanism for pressing a relief valve to a relief valve seat. At least the relief spring mechanism among members of the relief valve device is provided outside the pressurizing chamber in the pump body.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: April 2, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Usui, Hiroyuki Yamada, Kenichiro Tokuo, Toru Onose, Masami Abe
  • Patent number: 10233847
    Abstract: A method for controlling a fuel delivery system of an internal combustion engine, having a fuel delivery pump that is driven by an electric motor. The pressure that prevails in the fuel delivery system is determined by a volume difference between the fuel quantity delivered by the fuel delivery pump and the fuel requirement of the internal combustion engine and/or of the fuel delivery system.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: March 19, 2019
    Assignee: Continental Automotive GmbH
    Inventor: Gerald Behrendt
  • Patent number: 10221803
    Abstract: The pressure of the fuel is increased at a constant pressure intensification ratio after operating the pressure reducing device so that the pressure difference between the fuel passage and the control chamber after the operation has a value smaller than the predetermined pressure difference, if the required pressure of the fuel is higher than a reference pressure and lower than a pressure obtained by multiplying the reference pressure by a constant pressure intensification ratio.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: March 5, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masato Ikemoto
  • Patent number: 10208700
    Abstract: Methods and systems are provided for direct fuel injection. In one example, a fuel injector system includes an injector needle with an injector pin with a curved fuel channel of non-uniform width around the outer circumference of the injector pin, fluidically connected along the length of the curved fuel channel with a fuel reservoir inside the injector pin. An actuator coupled to the injector needle may sequentially move and position the injector needle to establish fluidic connection between the curved fuel channel and with one or more nozzle holes of the fuel injector at each position, where a duration of the fluidic connection at each position is based on a width of the curved fuel channel, and may determine the volume of fuel being discharged from only those nozzle holes, thereby reducing fuel spray interaction and increasing fuel spray atomization.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: February 19, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 10208727
    Abstract: A fluid conditioning module having a fluid inlet and a fluid outlet is provided. The fluid conditioning module includes a first pump element, a second pump element, a pressure regulator, a controller, and a prime mover to impart rotational motion in the first and second pump elements. A first pump inlet is in fluid communication with the fluid inlet. A filter inlet is in fluid communication with a first pump outlet and a second pump outlet, and a filter outlet is in fluid communication with the fluid outlet. A pressure regulator inlet and a pressure regulator outlet are in fluid communication with the filter outlet and a recirculation conduit, respectively. The control valve has a first position and a second position, which allows fluid flow through the recirculation conduit. The controller adjusts operation of one or more of the prime mover and the control valve based upon a predetermined parameter.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 19, 2019
    Assignee: Caterpillar Inc.
    Inventors: Andrew O. Marrack, Scott F. Shafer, Martin A. Lehman, Kenneth C. Adams
  • Patent number: 10190553
    Abstract: A pumping unit has a fuel storage tank (2), a piston pump (6) for feeding the fuel to an internal combustion engine (3); a gear pump (7) for feeding the fuel from the storage tank (2) to the piston pump (6), and a hydraulic circuit (46) which connects together the storage tank (2) and the internal combustion engine (3), extends through a pump body (8) of the piston pump (6) so as to lubricate an actuating shaft (36) of the piston pump (6) and has a collection branch (55) for collecting the fuel leaks resulting from the lubrication of said actuating shaft (36); the collection branch (55) being connected to an intake (37a) of the gear pump (7) so as to lubricate an actuating shaft (42) of the gear pump (7) with the fuel from said collection branch (55).
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: January 29, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Giuseppe Ficarella, Nello Medoro
  • Patent number: 10180123
    Abstract: A method is provided for pairing at least two injectors, e.g., two fuel injectors for a direct injection system of an internal combustion engine, wherein a criterion for the pairing of the at least two injectors is a total leakage and/or a pressure difference at a transfer pin of the respective injector. A method for producing an injector, e.g., a fuel injector for a direct injection system of an internal combustion engine, is also provided, wherein at least two instances of mechanical backlash, e.g., instances of pairing backlash, that are relevant to injection amounts, leakage amounts, and/or pressure differences of the injector are paired with each other.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: January 15, 2019
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Willibald Schuerz, Roman Etlender, Werner Reim
  • Patent number: 10125749
    Abstract: A pump has at least one pump element that comprises a pump piston that is driven in a reciprocating movement by a drive shaft having at least one cam and that defines a pump working chamber which, during the suction stroke of the pump piston is selectively filled with pumped medium via an inlet valve. The at least one cam is a multiple cam having multiple cam delivery areas for the delivery strokes of the pump piston. The inlet valve is configured to be electrically actuated. The inlet valve is closed when the pump piston is situated in the cam delivery area to be used for the delivery. The inlet valve is opened when the pump piston is situated in a cam delivery area that is not to be used for the delivery. Cam profiles of the cam delivery areas of at least one multiple cam are of different design.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 13, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Otto Mueller, Georg Woesten, Juergen Schneck
  • Patent number: 10113498
    Abstract: A method to control a fuel pump for a direct injection system provided with a common rail comprising the steps of calculating the objective fuel flow rate to be fed by the high pressure pump to the common rail instant by instant to have the desired pressure value inside the common rail; comparing the objective fuel flow rate with the maximum flow rate that can be delivered by the high pressure pump; and, based on the comparison between the objective fuel flow rate and the maximum flow rate that can be delivered by the high pressure pump, controlling the high pressure pump so as to alternate operating cycles of the high pressure pump with the maximum flow rate that can be delivered and idle operating cycles of the high pressure pump.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: October 30, 2018
    Assignee: MAGNETI MARELLI S.p.A.
    Inventors: Luca Mancini, Paolo Pasquali, Riccardo Marianello
  • Patent number: 10107244
    Abstract: A pump unit for supplying fuel, preferably diesel oil, to an internal combustion engine has at least two cylinders (10), which are formed in at least one head (9), are slidingly engaged by respective pistons (13), and communicate hydraulically with respective fuel inlets (11) in the cylinders (10) via respective interposed intake valves (15) provided with respective valve bodies (16) incorporated in the head (9); the inlets (11) of all the cylinders (10) being closed by a single cover (33) fixed to the head (9).
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: October 23, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Alessandro De Luca, Vincenzo Minunno