With Accumulator Patents (Class 123/447)
  • Patent number: 10787987
    Abstract: A method for operating an internal combustion engine having an injection system which has a high-pressure accumulator, wherein a high pressure in the high-pressure accumulator is regulated via a suction throttle on the low-pressure side as a first pressure control member in a first high-pressure control loop, wherein in a normal operation a high-pressure disturbance variable is produced via a pressure control valve on the high-pressure side as a second pressure control member, via which fuel is redirected from the high-pressure accumulator to a fuel reservoir. For this purpose, the high pressure in a safety operation is regulated by the pressure control valve via a second high-pressure control loop, or, in the safety operation, a maximum fuel volume flow is continuously redirected from the high-pressure accumulator to the fuel reservoir via the pressure control valve.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 29, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker
  • Patent number: 10781780
    Abstract: The disclosure relates to a fuel injection system having a valve arrangement for connecting a pressure chamber of a high-pressure fuel pump to a high-pressure accumulator. The valve arrangement has an outlet valve and a pressure-limiting valve. An outlet valve seat and a pressure-limiting valve seat are formed on a common valve seat element which is formed in one piece, and are arranged eccentrically with respect to one another.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: September 22, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Yury Mikhaylov, Yavuz Kurt
  • Patent number: 10731592
    Abstract: Various embodiments include a method for adjusting an initial attenuation current for an injection valve comprising: moving a piston to a TDC; while moving the piston, closing an inlet valve; expelling the fluid; moving the piston away from TDC and applying an attenuation current to an electromagnet with the inlet valve still closed; switching a source for the attenuation current off; detecting an induction pulse resulting from an opening movement of the inlet valve by monitoring a current intensity signal of a subsequent decay in the current; adjusting a current intensity over a plurality of pump cycles to a current intensity level; checking for each current intensity level whether a time profile of the induction pulse satisfies a predetermined detention criterion; and when the detention criterion is satisfied, adjusting the current intensity level for future pump cycles to a lower current intensity level than the most recent level.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: August 4, 2020
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Tet Kong Brian Chia, Dmitriy Kogan
  • Patent number: 10724517
    Abstract: A proportional metering pump includes a hydraulic machine, a metering mechanism provided with a nozzle, and a unit for attaching the nozzle to the pipe for access to the cavity inside the hydraulic machine, including a securing ring mounted in rotation about one of the ends of the nozzle, a locking ring mounted so as to be able to translate along the longitudinal axis around the pipe for access to the mixing chamber and is pressed, in the direction of the metering mechanism, against a shoulder created on the access pipe by a spring, the securing ring and the pipe being able to engage following a screw connection at the end of which they are secured in rotation so as to prevent unscrewing of the securing ring. Also disclosed is a method for assembling and disassembling a metering mechanism on a hydraulic machine of such a pump.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: July 28, 2020
    Assignee: DOSATRON INTERNATIONAL
    Inventors: Najib Laatiaoui, Christophe Charriere
  • Patent number: 10648416
    Abstract: An internal combustion engine is provided. The internal combustion engine includes a control device, and at least one injector for liquid fuel that includes a discharge opening for the liquid fuel. The at least one injector is connected to a collection volume by means of a line for liquid fuel. Liquid fuel can flow through the line for liquid fuel from the at least one injector to the collection volume. A control element that can be adjusted by the control device via a control signal is also provided. Via the control element, a back pressure in the line for liquid fuel can be adjusted in order to adjust an amount of liquid fuel discharged through the discharge opening of the at least one injector. Also provided is a method for operating an internal combustion engine and an injector.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: May 12, 2020
    Assignee: INNIO JENBACHER & GMBH CO OG
    Inventors: Raphael Burgmair, Medy Satria, Dino Imhof, Stephan Laiminger
  • Patent number: 10641199
    Abstract: A method for operating an internal combustion engine having a number of cylinders and an injection system having an injection system that has a common rail and a number of injectors associated with the cylinders, wherein an individual accumulator is associated with each injector and stores fuel from the common rail for the injector. The method has the following steps: starting the internal combustion engine, operating the internal combustion engine, shutting off the internal combustion engine. The following steps are also provided: a state indicating an engine standstill is detected, in particular after the internal combustion engine has been shut off, a high-pressure limit value is defined and a target high pressure is specified, a leakage is produced in the common rail without injection, the fuel pressure in the common rail is reduced to the defined high-pressure limit value below the target high pressure by way of the leakage.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: May 5, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Armin Dölker
  • Patent number: 10590900
    Abstract: A pump device for an internal combustion engine, having a high-pressure fuel pump for supplying fuel to a first injection device, having at least one low-pressure inlet, via which the fuel is fed to the high-pressure fuel pump from a low-pressure fuel pump, having at least one low-pressure outlet for conducting the fuel conveyed by the low-pressure fuel pump and fed via the low-pressure inlet to the high-pressure fuel pump out of the high-pressure fuel pump, and having at least one low-pressure port, for conducting fuel conveyed by the low-pressure fuel pump to a second injection device. At least one mixing region mixes the fuel flowing through the low-pressure outlet with fuel fed to the mixing region from the low-pressure fuel pump upstream of the high-pressure fuel pump. The low-pressure port is fluidically connected to the mixing region, and the low-pressure inlet is supplied with fuel from the mixing region.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: March 17, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Yavuz Kurt, Michael Mauer
  • Patent number: 10584622
    Abstract: The invention relates to an expansion body having an equalization chamber, which is separated by an elastic diaphragm from a fluid which flows through part of the expansion body. A mechanical spring applies an additional spring force to the diaphragm, wherein the spring has mechanical prestress. In addition, the invention relates to an SCR system with such an expansion body, and a method for monitoring a pressure sensor in such a SCR system with an expansion body. The method comprises the following steps: first, an anticipated characteristic pressure at which the spring force of the spring of the expansion body is overcome is defined by setting the prestress of the spring in the expansion body.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: March 10, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Farr, Claus Linsenmaier
  • Patent number: 10550808
    Abstract: A fuel injection system of an internal combustion engine includes: an injector having a hydraulic control chamber controlling the delivery of fuel through the injector, an actively controlled first valve system controlling the pressure relief from the control chamber, movable between: a first position in which the first valve system closes the injector by deterring the pressure from being relieved from the control chamber through the first relief circuit, and a second position in which the first valve system opens the injector by allowing the pressure to be relieved from the control chamber through the first relief circuit. A second relief circuit allows the pressure to be relieved from the control chamber through the second relief circuit. The second relief circuit includes a second valve system passively controlled by the fuel pressure and movable between two positions deterring or allowing the pressure to be relieved from the control chamber through the second relief circuit.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: February 4, 2020
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Guillaume Millet
  • Patent number: 10527005
    Abstract: An improved body defining a restricted fluid flow passage in a fuel supply system for delivering a gaseous fuel to an internal combustion engine. The body is formed for installation between and fluidly connecting a gaseous fuel supply conduit and a gaseous fuel flow passage that defines a predetermined volume between the restricted fluid flow passage and a nozzle chamber of a fuel injector from which the gaseous fuel is injected into the internal combustion engine. The restricted fluid flow passage has the smallest effective flow area between the gaseous fuel supply conduit and the nozzle chamber. The restricted fluid flow passage is located a predetermined distance from an injection valve seal within the fuel injector. The predetermined distance is calculated as a function of the speed of sound in the gaseous fuel and an opened time of the fuel injector.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: January 7, 2020
    Assignee: WESTPORT POWER INC.
    Inventors: Ashish Singh, Alain M. J. Touchette, David K. Mumford, Guowei Li, Michael C. Wickstone, Christopher J. B. Dicken
  • Patent number: 10465644
    Abstract: A high pressure pump for complex injection engines is provided. A body of the high pressure pump includes a first flow path that transports the low pressure fuel flowing in through the low pressure fuel inlet and a low pressure fuel storage chamber that is disposed in a lower portion of the body to store the low pressure fuel transported from the first flow path. A second flow path transports the low pressure fuel stored in the low pressure fuel storage chamber and a flow control valve is disposed over the low pressure fuel storage chamber to discharge the low pressure fuel, transported through the second flow path, to the pressure unit or the damper disposed in an upper portion of the body based on an opening or closing operation. A low pressure fuel outlet discharges the low pressure fuel, transported through the damper, to a low pressure fuel rail.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: November 5, 2019
    Assignee: Hyundai Kefico Corporation
    Inventors: Eun Woo Nah, Kyung Chul Han, Chun Ky Hong
  • Patent number: 10465577
    Abstract: A fuel supply device (2), in particular for use in a motor vehicle comprising an internal combustion engine (20), has a fuel supply pump (4) which is designed to remove fuel (28) from a fuel tank (6) and to release said fuel under increased pressure through an outlet; a first fluid connection (7) which is provided for connecting an exhaust line metering device (8) and; a second fluid connection (10) which is provided for connecting an engine injection device (12). The first fluid connection (7) is directly connected to the outlet of the fuel supply pump (4). A fluid choke (16) is arranged between the outlet of the fuel supply pump (4) and the second fluid connection (10). The invention enables an exhaust line metering device (8) and an engine injection device (12) to be operated reliably on a common fuel supply device (2).
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: November 5, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Roberto Scarfone
  • Patent number: 10450984
    Abstract: A control device for an internal combustion engine includes a fuel tank, a high pressure fuel passage, a pressure increasing device, a switching device, a low pressure fuel passage, a temperature sensor, a fuel injector, and an electronic control unit. The electronic control unit is configured to determine that there is an abnormality in the switching device when a temperature measured by the temperature sensor when the pressure increase signal is output is not higher than a temperature measured by the temperature sensor when the pressure increase signal is not output. The electronic control unit is configured to stop fuel pressure increase by the pressure increasing device by stopping an output of the pressure increase signal regardless of the engine operation state when the electronic control unit determines that there is the abnormality in the switching device.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: October 22, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takahiro Hirano
  • Patent number: 10428758
    Abstract: A fuel injection controller for an internal combustion engine includes first and second calculation sections. The first calculation section acquires a fuel pressure at a predetermined point of time before an injection starting point of time and calculates an injection time using the acquired fuel pressure. The second calculation section acquires a fuel pressure when the injection starting point of time arrives and calculates the injection time by using the acquired fuel pressure. The controller is configured to, before starting the energization to the injector, set a point of time to stop energization to an injector based on a calculation result of the injection time by the first calculation section. The controller is also configured to, after starting the energization to the injector, reset the point of time to stop the energization to the injector based on a calculation result of the injection time by the second calculation section.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: October 1, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sohichi Imai, Masanao Idogawa
  • Patent number: 10378524
    Abstract: A high-pressure fuel pump capable of reducing the number of components and decreasing the manufacturing cost by processing of a pump body is provided. The high-pressure fuel pump includes a metal damper, a pump body in which a damper housing that houses the metal damper is formed, a damper cover attached to the pump body, covering the damper housing, and holding the metal damper between the pump body and the damper cover, and a holding member fixed to the damper cover and holding the metal damper from a side opposite to the damper cover. The holding member is provided with an elastic portion that urges the pump body so that the metal damper is urged toward the damper cover.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: August 13, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Atsuji Saito, Satoshi Usui, Masamichi Yagai, Minoru Hashida, Masayuki Suganami, Kenichiro Tokuo, Atsushi Hohkita, Yuta Saso, Kazuaki Tokumaru
  • Patent number: 10371084
    Abstract: A method for detecting variations between the quantities of fuel injected into cylinders by fuel injection devices and correcting the fuel injection quantity variation while minimizing the computational load on a drive device and the level of performance required of a pressure sensor includes a drive device for fuel injection control, wherein movable valves are driven so that predetermined quantities of fuel are injected by applying, for the duration of a set energization time, a current that will reach an energization current to solenoids of a plurality of fuel injection devices which open/close fuel flow paths. The drive device is characterized in that the set energization time or energization current is corrected on the basis of a pressure detection value from a pressure sensor that is attached to a fuel supply pipe disposed upstream of the plurality of fuel injection devices.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: August 6, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Toshihiro Aono, Takashi Okamoto
  • Patent number: 10371111
    Abstract: A device for injecting fuel into the combustion chamber of an internal combustion engine comprising at least one injector. The injector includes an injector body, a high-pressure accumulator integrated into the injector body, an injection nozzle, a high-pressure bore, and a feed bore. The injection nozzle defines a nozzle chamber and has a nozzle needle configured to be guided in an axially movable manner and that is surrounded by the nozzle chamber. The high-pressure bore is connected to the high-pressure accumulator and the nozzle chamber. The feed bore is configured to feed high-pressure fuel to the high-pressure accumulator. Additionally, the feed bore has a lance connection positioned laterally on the injector body, is formed as a bore separate from the high-pressure bore, and connects the lance connection directly to the high-pressure accumulator.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: August 6, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Johannes Schnedt
  • Patent number: 10344698
    Abstract: The present disclosure provides a method for operating injectors of an injection system, which has a pressure accumulator (rail), of an internal combustion engine, in which needle movement of the injectors is controlled directly by way of an actuator. The method may comprise: determining an actual injection quantity of each injector of the injection system via a fuel quantity which is requested at a pump of the injection system for each injector for a predefined time period or via a pressure loss in the pressure accumulator, the pressure loss brought about by way of the injection operation; comparing the determined actual fuel quantity with a setpoint fuel quantity; and if a deviation is determined in an injector, carrying out an open/closed loop control method for reducing/eliminating the determined deviation.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: July 9, 2019
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Reinhard Barth, Roman Etlender
  • Patent number: 10344703
    Abstract: A method for operating a combustion engine is provided. A fuel injector is operated to perform a fuel injection, a sequence of pressure signals of the fuel rail pressure during the fuel injection is sampled and filtered and a total pressure difference between a first sample after a top dead center of the fuel pump and before the fuel injection has started and a chosen second sample after the injection and before a next pumping stroke is determined. A linear pressure slope at the second sample and a leakage pressure difference between the first sample and the second sample based on the linear pressure slope is calculated, leading to calculating an injection pressure difference as the difference between total pressure difference and the leakage pressure difference. With this, a value of a fuel quantity injected as a function of the injection pressure difference can be determined, while leakages are compensated.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: July 9, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Stefano Nieddu, Andrea Mollar
  • Patent number: 10294884
    Abstract: System for controlling an injection of fuel in an engine is disclosed. The engine includes a cylinder and a first fuel injector to inject a first fuel in the cylinder. The system includes a sensor disposed on or proximate to the first fuel injector and configured to generate an electrical signal indicative of at least one of a start of the injection and an end of the injection of the first fuel. The system further includes a controller configured to adjust at least one of a mass and the start of injection of the first fuel to be injected by the first fuel injector based on the electrical signal. A dual-fuel engine employing the system for controlling an injection of fuel in an engine is also disclosed. Moreover, method and non-transitory computer readable media for controlling an injection of the fuel are also disclosed.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: May 21, 2019
    Assignee: GE Global Sourcing LLC
    Inventors: Jassin Marcel Fritz, Dino Matthias Imhof
  • Patent number: 10260447
    Abstract: An apparatus includes an input module structured to interpret a fuel pressure command indicative of a target fuel pressure within an accumulator and a target fuel injection characteristic, a pump module structured to control a pump assembly to provide fuel to the accumulator to maintain the target fuel pressure within the accumulator, an injector module structured to control a plurality of fuel injectors to inject fuel into an engine based on the target fuel injection characteristic, a pressure module structured to interpret pressure data regarding an actual fuel pressure within the accumulator and to determine a pressure difference between the target fuel pressure and the actual fuel pressure, and a modulation module structured to determine a final fuel injection command responsive to the pressure difference exceeding a first magnitude threshold where the final fuel injection command is based on the pressure difference and the target fuel injection characteristic.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 16, 2019
    Assignee: Cummins, Inc.
    Inventors: Mark N. Bays, Michael R. Tidwell
  • Patent number: 10253719
    Abstract: A method for starting a direct-injection internal combustion engine of a vehicle includes: rotating the high-pressure injection pump by a starter; measuring fuel pressure delivered by the pump, taken at two successive compression top dead centers of the pump operating in maximum output mode; establishing the pressure gradient of the fuel, on an angular reference system, based on the two successive pressure measurements; comparing the established gradient with a predefined bijective table that respectively matches a plurality of quantities of fuel to be injected and a plurality of pressure gradients; and adapting the quantity of fuel injected during the starting phase before the engine reaches steady operating speed, depending on the result of the comparison, in order to inject a quantity of fuel that corresponds, in the predefined bijective table, to the established pressure gradient, upon authorization of the first injection given by the engine control unit.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: April 9, 2019
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Claude Courtiel, Philippe Serrecchia, Renaud Andre
  • Patent number: 10247127
    Abstract: A fuel injection equipment for an internal combustion engine is piloted by a central electronic unit, the equipment includes a piloted low pressure pump drawing the fuel from a low pressure tank and sending the fuel toward a piloted inlet valve controlling the inlet of a high pressure pump which pressurizes the fuel and sends it pressurized toward a manifold to which is connected at least one injector. The equipment also includes a high pressure accumulator, distinct from the manifold, and a piloted high pressure valve in fluid communication between the outlet of the high pressure pump and the manifold so that the high pressure accumulator stores and delivers pressurized fuel to the manifold.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: April 2, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventor: Noureddine Guerrassi
  • Patent number: 10197001
    Abstract: A method for correcting an injector characteristic defining a relationship between an injector injection time and a valve closing time for a cylinder of an internal combustion engine by sensing an injector closing time includes steps of: sensing the injector closing time; determining a compensation amount for compensating for a commanded injection time using a number of sensing failures or a result of a learning of a relationship between a required commanded injection time and the injector closing time in a relevant cylinder, in addition to the number of sensing failures when there is a failure to sense the injector closing time; and controlling a commanded injection time according to an amount of required fuel injection in the relevant cylinder, based on the determined compensation amount.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: February 5, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Kyung-Ho Ahn, Min-Kyu Han
  • Patent number: 10132266
    Abstract: A controller is provided that performs first injection that executes fuel injection with lower injection rate and subsequently performs second injection with higher injection rate. The controller configured to determine a target value for fuel pressure drop amount or difference between pressure of fuel within a fuel injection valve at starting point of the first injection and pressure of fuel within the fuel injection valve while the first injection is performed, and stop supply of command signal to the fuel injection valve once fuel pressure drop amount in the first injection becomes greater than target value for the fuel pressure drop amount, and supply command signal once the fuel pressure drop amount in the first injection becomes smaller than the target value for the fuel pressure drop amount.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: November 20, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Naoyoshi Matsubara
  • Patent number: 10113522
    Abstract: Provided is an end seal structure of a fuel rail for a gasoline direct injection engine, the end seal structure being characterized in that: a pressure receiving surface is formed on an inner wall surface of the end cap having the cap-nut shape, the pressure receiving surface defining a seat surface; a pressing surface is formed at an end of the rail body, the pressing surface defining a seat surface facing the pressure receiving surface; the end cap having the cap-nut shape and including the pressure receiving surface is screwed and fixed to the rail body; and the pressure receiving surface of the end cap is brought into pressure contact with the pressing surface of the rail body by an axial force created by tightening of the end cap having the cap-nut shape so as to seal the end of the rail body.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: October 30, 2018
    Assignee: USUI KOKUSAI SANGYO KAISHA LTD.
    Inventor: Daisuke Asahi
  • Patent number: 10106032
    Abstract: A refuse vehicle includes a chassis having an engine, a body assembly, a tailgate pivotally attached to the body assembly, a CNG fuel system having a CNG fuel tank coupled to the tailgate and moveable therewith, the engine configured to be powered by the CNG fuel system, at least one of one a non-structural conduit, a non-structural raceway, and a non-structural channel configured to contain at least one of wiring and a hydraulic line, and an impact mitigation system. The impact mitigation system is a passive system and includes a skeleton. The skeleton includes a plurality of structural frame members positioned to direct impact loads around the CNG fuel tank. The impact mitigation system provides a protected region within which the CNG fuel tank is disposed.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: October 23, 2018
    Assignee: Oshkosh Corporation
    Inventors: Lucas D. Crist, Grant D. Wildgrube, Jarud H. Hoefker, Leslie H. Schwartz
  • Patent number: 10077748
    Abstract: A fuel injector, comprising an injector body having a longitudinal axis, an injector cavity, an injector orifice at a distal end of the injector cavity, and an inlet conduit configured to supply fuel into the injector cavity, a nozzle valve in the injector cavity, a drain circuit configured to drain fuel from the injector cavity to a low pressure drain, a pilot valve in flow communication with the drain circuit, a chamber housing having an inlet passage to receive fuel from the injector cavity, a return port in flow communication with the pilot valve to drain fuel to the drain circuit, and an abutting surface surrounding the return port, and a control body slidably disposed in the chamber housing, the control body having, a distal end, a proximal end, and a longitudinal axis parallel with the injector body longitudinal axis, a first depression at the distal end defining a first control chamber in which one end of the nozzle valve is guided, a second depression at the proximal end defining a second control cha
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: September 18, 2018
    Assignee: Cummins Inc.
    Inventors: Donald J. Benson, Ahmad M. Sabri, Hanumantharao Konakanchi
  • Patent number: 9964083
    Abstract: A fuel injection system for a reciprocating engine, comprising injectors for injecting pressurized fuel into the cylinders of the engine, a high pressure pump for pressurizing fuel to be injected, a supply pipe for feeding fuel from the high pressure pump toward the injectors and feed pipes for feeding fuel from the supply pipe to the injectors. The first ends of the feed pipes are connected to the injectors and the second ends to the supply pipe. Each fuel injector is provided with a pressure accumulator.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: May 8, 2018
    Assignee: WARTSILA FINLAND OY
    Inventors: Kjell Eklund, Mikael Troberg, Anton Wintersteller, Vesa Voutilainen
  • Patent number: 9945308
    Abstract: A system and method for automatically calibrating an engine operating with a first fuel and a second fuel includes comparing each of a plurality of engine operating parameters with a corresponding limit, determining whether any of the plurality of engine operating parameters has exceeded its corresponding limit and, while none of the plurality of engine operating parameters has exceeded its corresponding limit, automatically and incrementally advance start of injection timing.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: April 17, 2018
    Assignee: Caterpillar Inc.
    Inventors: Michael D. Gough, Nathan Atterberry, Jeff Howard, Brian Bell, Hua Xu
  • Patent number: 9903306
    Abstract: A system and method for measuring fuel pressure decreases in a fuel accumulator caused by a fuel injector of an internal combustion engine is provided. The system includes the ability to stop a fuel flow to a fuel accumulator of the engine. Pressure signals are transmitted to a control system of the engine until the fuel pressure in the fuel accumulator drops by a predetermined amount, at which time fuel flow is re-enabled. The pressure signals are then analyzed to determine the amount or quantity of fuel delivered by each fuel injector. The system and method maintain engine and emissions performance by limiting the amount of fuel pressure decrease in the fuel accumulator.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: February 27, 2018
    Assignee: CUMMINS INC.
    Inventors: David M. Carey, Paul V. Moonjelly
  • Patent number: 9897058
    Abstract: A fuel injector for use in an internal combustion engine includes a valve member that is moveable within a bore of an injection nozzle so as to be engageable with a valve seat region to control fuel delivery through one or more nozzle outlets, an injector body housing an actuator that is operable to move the valve member within the bore, and defining an accumulator volume for storing high pressure fuel. The fuel injector includes a damping chamber in fluid communication with the accumulator volume through a fluid passage, the damping chamber serving to reduce pressure wave activity within the accumulator volume.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: February 20, 2018
    Assignee: DELPHI INTERNATIONAL OPERATIONS S.A.R.L.
    Inventors: Christophe Tapin, Stephane Van Den Hende, Julien Roussilhe
  • Patent number: 9828988
    Abstract: A damper for a high-pressure pump includes a housing and a cover that can be coupled to the housing to form a damping space. The cover has an elevation including a plurality of concave regions and a plurality of convex regions, wherein the concave and convex regions are arranged about a central region of the elevation. Each of the concave regions is arranged between two of the convex regions in order to scatter sound.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 28, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Mario Koehler, Michael Mauer, Peter Voigt, Eugenia Herdt, Uwe Kasper, Stefan Kulzer
  • Patent number: 9790908
    Abstract: A common rail fuel injection device includes first and second flow rate regulating valves for regulating a delivery volume of a pressurized fuel feed pump that feeds pressurized fuel to a common rail, a pressure reducing valve for reducing a common rail pressure, and a control device. The control device for the common rail fuel injection device includes a first drive controlling unit that controls a first electromagnetic driving unit for the second flow rate regulating valve and a second electromagnetic driving unit for the pressure reducing valve, and a second drive controlling unit that controls a third electromagnetic driving unit for the first flow rate regulating valve. The first drive controlling unit prohibits a drive instruction from being sent to the second flow rate regulating valve when the first drive controlling unit sends a drive instruction to the pressure reducing valve.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: October 17, 2017
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Takahiro Nagasaki, Kazuyoshi Narita, Kenta Suzuki
  • Patent number: 9777663
    Abstract: A method for controlling an internal combustion engine provides that the internal combustion engine is operated based on a first injection pattern in a first operating state, and based on a second injection pattern in a second operating state. At least one parameter of the injection patterns in the transition from the first to the second operating state is selected in such a way that the noise emission remains constant. In the transition to the injection pattern having greater noise, first the at least one parameter of the first injection pattern is varied, whereupon the switchover takes place. In the transition to the injection pattern having the lower noise, first the switchover is implemented, whereupon the at least one parameter of the second injection pattern is varied.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: October 3, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Markus Hernier, Udo Schulz, Johannes-Joerg Rueger
  • Patent number: 9777879
    Abstract: A pulsation damper is disposed within a fluid volume defined by a fluid volume wall such that the pulsation damper is exposed to pressure pulsations within the fluid volume. The pulsation damper includes a pulsation damper first half having a first damper wall which is flexible in response to the pressure pulsations; a pulsation damper second half having a second damper wall which is flexible in response to the pressure pulsations; and a damping volume defined between the pulsation damper first half and the pulsation damper second half such that the damping volume is fluidly segregated from the fluid volume. One of the pulsation damper first half and the pulsation damper second half defines a spacing member which maintains separation between the fluid volume wall and one of the first damper wall and the second damper wall.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: October 3, 2017
    Assignee: DELPHI TECHNOLOGIES, INC.
    Inventors: Mahoro M. Fujita, Kenneth J. Dauer, Daniel F. Kabasin, Ravish S. Masti, Youssef Kazour
  • Patent number: 9777689
    Abstract: A valve for injecting fuel in an internal combustion engine includes a housing having an inflow section and an outflow section for the fuel and a drive section situated between the inflow section and the outflow section. A first control element is provided which is assigned to the inflow section and which enables or prevents the supply of the fuel in a manner dependent on a switching position of the first control element. A second control element is provided which is assigned to the outflow section and which enables or prevents the discharge of the fuel in a manner dependent on a switching position of the second control element. An actuating drive is provided which is arranged in the drive section and which is coupled to both control elements such that the control elements can be moved into an open position independently of one another.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: October 3, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Harry Schuele
  • Patent number: 9739209
    Abstract: A method for operating a fuel injection system of an internal combustion engine is disclosed. The fuel injection system comprises a high pressure accumulator (rail) and a high-pressure fuel pump with a digital inlet valve and which guides fuel into the high pressure accumulator. The number of the control pulses for the digital inlet valve and thus the number of the pump delivery strokes is reduced with respect to the number of the injection steps of an injector of the injection system, in order to thereby reduce the noise and the energy consumption of the high-pressure pump.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: August 22, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Hans Riepl, Tobias Ritsch
  • Patent number: 9677519
    Abstract: A device for decreasing fuel pulsation of an LPG vehicle may include a bombe storing LPG fuel therein, a regulator connected to the bombe and adjusting a temperature and pressure of the LPG fuel, an injector spraying the LPG fuel supplied from the regulator to an engine, a fuel line connecting the bombe, the regulator, and the injector to supply or collect the fuel, and a pulsation damper provided between the regulator and the injector in the fuel line and have a plurality of pistons slidably coupled each other for decreasing the fuel pulsation.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: June 13, 2017
    Assignees: Kia Motors Corporation, Hyundai Motor Company
    Inventor: Jin Oh Song
  • Patent number: 9664166
    Abstract: An internal combustion engine includes a port injection valve and a feed pump that pressurizes the fuel. An engine ECU performs a stuck abnormality diagnosis of the fuel pressure sensor based on detection values of the fuel pressure sensor in first processing and second processing. The first processing includes setting a target pressure of the fuel in the storage section to a first pressure, and detecting a pressure of the fuel with the fuel pressure sensor. The second processing includes setting the target pressure of the fuel in a low-pressure delivery pipe to a second pressure lower than the first pressure, and detecting a pressure of the fuel. The engine ECU causes the first processing to be performed in response to a start signal that starts an internal combustion engine, and causes the second processing to be performed subsequent to the first processing.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: May 30, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Nagakura, Toshitake Sasaki, Kazuya Miyaji, Takashi Suzuki
  • Patent number: 9657653
    Abstract: A system and method for detecting pressure deviation of a first fluid in an engine is disclosed. The method may comprise calculating, for each of a plurality of measurements, a delta between an actual first fluid pressure and a target pressure, summing each delta obtained from the calculating, and determining pressure deviation of the first fluid based on a cumulative sum of the deltas. In an embodiment, the first fluid may be natural gas.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: May 23, 2017
    Assignee: Caterpillar Inc.
    Inventors: Behnaz Ensan, Steven Thomas Grant, Matthew Benjamin Yandell, Hardikkumar Shah, Sunil Jefferey Bean
  • Patent number: 9638154
    Abstract: A fuel pump manifold pressure control system may be effective to provide a compact and more effective fuel pump mechanism for compression ignition engines, such as diesel and some natural gas engines. The fuel pump manifold pressure control system includes a fuel pump manifold, at least one fuel injection accumulator adapted for supplying pressurized fuel to at least one fuel injector, a pressure control valve, a pressure sensor, and a pressure relief valve, all contained within a compact fuel pump housing. The pressure control valve and pressure sensor are each adapted for signal communication with electronic controller, and for fuel communication with the fuel pump manifold. The pressure relief valve is adapted for fuel communication with the fuel pump manifold. Each of the control valve, sensor, and relief valve are fixedly mounted to and internally contained within the housing.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 2, 2017
    Assignee: Caterpillar Inc.
    Inventor: Michael D. Gerstner
  • Patent number: 9638128
    Abstract: A compression ignition engine (10) operates to fuel an engine cylinder (12) to create an in-cylinder air-fuel charge and to cause that charge to autoignite. A fuel injector (20) operates to inject fuel into the engine cylinder for substantially the entire duration of a first phase (24) of fuel injection at substantially the maximum injection pressure that the fuel injector can deliver to create a premixed fraction of the in-cylinder air-fuel charge prior to autoignition. As the first phase ends, fuel injection transitions to a second phase (26) which commences in advance of autoignition. During the second phase, the fuel injector injects fuel into the engine cylinder at a rate of injection that is significantly less than the rate of injection used during the first phase.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: May 2, 2017
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventors: Mahmoud S. El-Beshbeeshy, Grzegorz Siuchta
  • Patent number: 9593653
    Abstract: Systems and methods are provided for operating a direct injection fuel pump. One example system comprises an accumulator positioned within a bore of the direct injection fuel pump in a coaxial manner wherein the accumulator is positioned downstream from a solenoid activated check valve. The accumulator may regulate pressure in a compression chamber of the direct injection fuel pump and a high pressure fuel rail when the direct injection fuel pump is operating in a default pressure mode.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: March 14, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Brad Alan VanDerWege
  • Patent number: 9551631
    Abstract: A system and method for is provided to determine a fuel flow cutout delay between transmitting a signal to stop a fuel flow to a fuel accumulator of a fuel system and the actual stop of fuel flow to the fuel accumulator. The fuel flow cutout delay is used to determine when pressure data from a sensor associated with the fuel accumulator is unaffected by fuel flow to the fuel accumulator.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: January 24, 2017
    Assignee: Cummins Inc.
    Inventors: David M. Carey, Donald J. Benson, Sanjay Manglam, Paul V. Moonjelly, Richard E. Reisinger
  • Patent number: 9525274
    Abstract: A corona discharge ignition system comprising a plurality of corona igniters is provided. The system includes a control and drive electronics unit for directing the energy from a power supply toward the corona igniters; and a single transformer disposed between the control and drive electronics unit and the plurality of corona igniters. A plurality of igniter switching units is connected to the control and drive electronics unit and each igniter switching unit is connected to a separate one of the corona igniters. Each igniter switching unit allows current to travel from the transformer to the one connected corona igniter when activated and prevents current from traveling from the transformer to the one connected corona igniter and from the one connected corona igniter toward the transformer when deactivated. Only one of the igniter switching units is activated at any given time during operation of the system.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: December 20, 2016
    Assignee: Federal-Mogul Ignition Company
    Inventors: John Antony Burrows, Zdenek Svimbersky, Robert Emil Ratz
  • Patent number: 9518528
    Abstract: The disclosure provides a system and method to calculate an actual on-time of a fuel injector. The system may include one or more modules located in a control system. The control system uses information available before the fuel injection signal is transmitted to the fuel injector to model and predict a pressure profile in a fuel system that provides high-pressure fuel to the fuel injector, and uses that information along with a fueling command to calculate an actual on-time for the fuel injector.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: December 13, 2016
    Assignee: CUMMINS INC.
    Inventor: Carlos A. Lana
  • Patent number: 9518527
    Abstract: A method for function control of a high pressure pump (5) in a system for fuel injection in a combustion engine: The method is carried out during stationary operating conditions in the combustion engine, with a constantly requested reference value for the fuel pressure in an accumulator tank (6). A feeding pump (2) in a low pressure part (3) of the system is controlled so that the fuel pressure in the low pressure part at the inlet to the high pressure pump falls, and at the same time this fuel pressure is measured, as is the fuel pressure in the accumulator tank. The development of the measured fuel pressure in the accumulator tank is compared to the reference value during the pressure reduction in the low pressure part, for the generation of information about the high pressure pump's functionality.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: December 13, 2016
    Assignee: SCANIA CV AB
    Inventor: Kim Kylström
  • Patent number: 9506440
    Abstract: A direct fuel injection system including a common rail and control unit, a pump, an on/off valve, controlled by the control unit, to regulate the volume of fuel sent to the pump to be fed into the common rail, the control unit including: first determination elements for determining a peak phase duration during which a command must be applied to the valve to obtain a peak current to cause a change of state of the valve; second determination elements for determining a holding ratio according to which a command must be applied to the valve, after its change of state, to maintain a holding current necessary to maintain the state of the valve; application elements for applying the command to the valve first continuously during the peak phase duration and then by pulse width modulation according to the holding ratio; and at least one recurrent and automatic adaptation element.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: November 29, 2016
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Jérôme Lachaize
  • Patent number: 9494102
    Abstract: A method for operating a fuel injection system of an internal combustion engine is described in which pressurized fuel is provided in a pressure storage device and a fuel pressure prevailing in pressure storage device is regulated with the aid of a pressure regulation, during a first measuring interval at least one fuel withdrawal from the pressure storage device taking place, and during a second measuring interval no fuel withdrawal from the pressure storage device of this type taking place, and during the first and the second measuring intervals a performance quantity of the pressure regulation being ascertained in each case, and the fuel quantity withdrawn during the first measuring interval being ascertained for the at least one withdrawal from a difference of the ascertained performance quantities of the pressure regulation.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: November 15, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Markus Strasser