Electrically Actuated Injector Patents (Class 123/472)
  • Patent number: 10309360
    Abstract: A valve assembly for an injection valve is disclosed, including a valve body with a cavity, a valve needle axially moveable in the cavity, the valve needle being fixedly connected to a retaining element which extends in radial direction and is arranged in an axial region of the valve needle facing away from the fluid outlet portion, and an armature being able to slide on the valve needle and acting on the needle by way of the retaining element. A conical spring is arranged between the retaining element and a top side of the armature facing the retaining element, biasing the armature away from the retaining element.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: June 4, 2019
    Assignee: CPT Group GmbH
    Inventors: Filippo Falaschi, Christoph Hamann, Luigi Marchi
  • Patent number: 10247125
    Abstract: The purpose of the present invention is to provide a fuel injection valve control device with which variability in the injection amount with respect to drive pulse width can be kept to a satisfactory level in each of a plurality of fuel injection devices. The present invention provides a fuel injection valve control device for controlling a plurality of fuel injection devices each equipped with a valve body and a solenoid for opening the valve body, characterized in that the device is configured such that, a prescribed time after voltage has been applied to the solenoid, a holding current is applied, the prescribed time and the holding current being corrected for each of the fuel injection devices, on the basis of the operating characteristics of the fuel injection device.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 2, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Toshihiro Aono, Motoyuki Abe, Masahiro Toyohara, Osamu Mukaihara
  • Patent number: 10240547
    Abstract: Provided is a fuel injection control device capable of accurately detecting a valve opening delay time of a fuel injection valve, and implementing high-precision minute injection control. A valve opening delay time of a fuel injection valve is estimated on the basis of a plurality of valve closing delay times obtained when the fuel injection valve is operated with injection pulse widths that are different injection pulse widths from each other and with which the fuel injection valve is in an intermediate lift state.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: March 26, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Haoyun Shi, Yuuki Okuda, Masahiro Toyohara
  • Patent number: 10167807
    Abstract: Control device of an internal combustion engine, namely, for controlling injectors or gas valves of a fuel supply system of the internal combustion engine, wherein the control device controls each injector for opening the same such that the voltage present at the respective injector changes between different voltage levels in a boost phase of the control as well as in a hold phase of the control, and wherein the control device controls the respective injector in the boost phase such that after reaching a defined boost current level the voltage present at the respective injector changes between a relatively low boost voltage level which is greater than zero volts and a relatively high boost voltage level which is greater than a supply voltage of the control device.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: January 1, 2019
    Assignee: MAN Energy Solutions SE
    Inventor: Ulrich Probst
  • Patent number: 10167761
    Abstract: An injection device (14), for introducing a reducing agent (11) into an exhaust gas stream (8) of an exhaust system (7) of an internal combustion engine (1), has an exhaust pipe (15) for guiding the exhaust gas stream (8), which has a connecting piece opening (18) in a wall (17). A connecting piece (16) is inserted with an inner end (19) into the connecting piece opening (18) and is provided for connecting an injector (10) at an outer end (20). Simplified assembly is achieved if the connecting piece (16) has, at an inner end (19), a laterally projecting, fully circumferentially extending collar (22). The collar (22) is in contact, on an inner side (23) of the wall (17), with an opening edge (24) enclosing the connecting piece opening (18) and is welded to the wall (17).
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: January 1, 2019
    Assignee: Eberspächer Exhaust Technology GmbH & Co.KG
    Inventors: Jürgen Kobe, Frank Berkemer, Konrad Klausa, David Binder, Felix Hackländer
  • Patent number: 10081440
    Abstract: A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle including a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a toggle actuator, including an actuation source, and a stroke amplifier, including a piston coupled to the actuation source, a first hydraulic chamber having a first diameter in fluid communication with the piston, a second hydraulic chamber having a second diameter in fluid communication with the first hydraulic chamber, and a plunger in fluid communication with the second chamber, wherein a diameter ratio between the first hydraulic chamber and the second hydraulic chamber amplifies a displacement of the actuation source to displace the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: September 25, 2018
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: David G. Bannon
  • Patent number: 10066521
    Abstract: An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f1). The engine has a second valve, which controls the quantity of fuel supplied into the intake channel. The quantity of fuel is controlled by controlling the time interval during which the second valve is open during each engine cycle (x). A control device is provided to control the quantity of fuel supplied. In a first operating state, the second valve is opened at a second frequency (f2, f3, f4) which is coordinated with the first frequency (f1). In a second operating state, the second valve is opened independently of the first frequency (f1).
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: September 4, 2018
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Christian Eberle, Markus Weinig, Claus Naegele, Mark Reichler
  • Patent number: 10030563
    Abstract: Provided is a gasket effectively suppressing heat transfer from an exhaust pipe with an injector retention section to a reducing-agent injector. The gasket includes a first plate to contact a retaining wall of the injector retention section, the first plate having a first opening allowing the reducing agent to be injected and a first bolt insert-through hole, a second plate disposed closer to the reducing-agent injector than the first plate, the second plate having a second opening allowing the reducing agent to be injected and a second bolt insert-through hole, and a spacing keeping member that retains a spacing between the first and second plates to form a heat insulation space therebetween. The heat insulation space has a shape allowing at least a part of the heat insulation space to communicate with the outside of the gasket between the first and second plates.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 24, 2018
    Assignee: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Michio Hirayama, Taisuke Ikeda, Seiichi Onishi
  • Patent number: 9920720
    Abstract: A blowby gas treatment device is configured to discharge blowby gas inside an internal combustion engine to an intake passage inside an intake manifold. The blowby gas treatment device includes a blowby gas passage, a flow control valve, a communication hole, and a lid. The blowby gas passage includes an engine gas passage and an intake manifold gas passage. The communication hole is provided in the intake manifold. The communication hole is configured to connect outside of the intake manifold and a part of the intake manifold gas passage on a downstream side of the flow control valve in a gas flow direction. The communication hole opens the intake manifold gas passage to the atmosphere. A lid is configured to open and close the communication hole.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: March 20, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yukio Iwazume, Hideto Yano
  • Patent number: 9915219
    Abstract: Methods and systems are provided for injecting fuel into a combustion chamber of an engine. In one example, a system may include a hollow cone-shaped injector and a control unit to control the injector. The control unit may detect the position of an inlet valve and trigger the injection process, wherein the injector may be configured to spray fuel out of an inlet duct, through an annular gap, and into the combustion chamber of an engine in an injection process.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: March 13, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Oliver Berkemeier, Helmut Hans Ruhland, Robin Ivo Lawther
  • Patent number: 9745930
    Abstract: A method for repolarizing a piezoelectric actuator associated with an injector mounted on an internal combustion engine of a vehicle, the piezoelectric actuator having undergone initial polarization before the vehicle was used, includes with the engine stopped: applying a first polarization voltage to the terminals of the piezoelectric actuator during a first specified time interval of not less than ten minutes, stopping the application of the first polarization voltage during a second time interval, following the first time interval and at least equal to the latter, applying a second polarization voltage to the terminals of the piezoelectric actuator during a third specified time interval, following the second time interval, stopping the application of the second polarization voltage to the terminals of the piezoelectric actuator after the third time interval, the successive first, second and third time intervals defining a repolarization sequence of the piezoelectric actuator.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: August 29, 2017
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Michael Leblon, Alain Atanasyan, Yves Agnus
  • Patent number: 9745938
    Abstract: An injector system which is in particular used as an injector block for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines includes a fuel distribution rail, a counter bracket, a first injector, and at least one second injector. Here, the counter bracket has a first connecting piece and a second connecting piece. The first injector is joined to the counter bracket on an input side of the first connecting piece with the aid of an elastic sealing ring. The second injector is joined to the counter bracket on an input side of the second connecting piece with the aid of an elastic sealing ring. In this case, the counter bracket is connected to the fuel distribution rail. The fuel distribution rail is used for distributing compressed natural gas to the injectors. The injector system has a compact design.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: August 29, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Wolf Stahr, Martin Haug, Horst Kirschner, Frank Miller
  • Patent number: 9696069
    Abstract: An ejector has a primary inlet, a secondary inlet, and an outlet. A primary flowpath extends from the primary inlet to the outlet and a secondary flowpath extends from the secondary inlet to the outlet, merging with the primary flowpath. A motive nozzle surrounds the primary flowpath upstream of a junction with the secondary flowpath. The motive nozzle has a throat and an exit. In one group of embodiments, an effective area of the exit is variable. In others, the needle may extend downstream from a flow control portion or may have an upstream convergent surface of a flow control portion.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: July 4, 2017
    Assignee: Carrier Corporation
    Inventors: Hongsheng Liu, Jiang Zou, Frederick J. Cogswell, Jinliang Wang, Parmesh Verma
  • Patent number: 9695955
    Abstract: A valve for metering fluid under pressure includes: a valve housing having an inlet opening and a metering opening for the fluid; an outward-opening valve needle pressure equalized via an elastic hollow body which is subject to the fluid pressure; and an electromagnet which lifts the valve needle up from the metering opening against the force of a valve closing spring. The valve housing is assembled from a valve tube and one valve body on the metering end and another on the inlet end, each being connected in a fluid-tight manner to the valve tube at the tube ends. The magnet pot including the enclosed solenoid coil is secured on the valve tube on the outside by the electromagnet, and the magnetic core is secured on the valve tube on the inside in such a way that it surrounds a needle section of the valve needle.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: July 4, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Dietmar Schmieder, Tilo Landenfeld
  • Patent number: 9677524
    Abstract: A nozzle able to be arranged in a diesel injection system of the internal combustion engine of a vehicle comprises a fixed member provided with a nozzle seat at the center of which there opens a discharge orifice, the fixed member comprising a cylindrical tubular part defining an inner guide cylinder extending axially from an open first end as far as the seat that forms the closed end of the guide cylinder, and a shut-off member arranged and guided in the guide cylinder, the shut-off member being able to move between a closed state (EF) when the shut-off member is in abutment against the seat and an open state (EO) when the shut-off member opens the discharge orifice.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 13, 2017
    Assignee: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L.
    Inventors: Michel Marechal, Frederic Sauvage
  • Patent number: 9664161
    Abstract: An injection valve assembly includes a valve body having a cavity with a fluid inlet and a fluid outlet, a valve needle axially movable in the cavity to control fluid flow through the fluid outlet, an electro-magnetic actuator unit having an armature axially movable in the cavity and having a main body and a flange axially distanced from and fixedly coupled to the main body, and a stop element fixed to the valve needle and arranged in the cavity between the main body and the flange. An armature spring in the cavity forces the stop element into contact with an inner surface of the flange. An overlapping area of the stop element and the inner surface is bounded by an inner contour and an outer contour, and an area enclosed by the outer contour is at least three times as large as an area enclosed by the inner contour.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: May 30, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Ivano Izzo, Mose Gado, Matteo Soriani
  • Patent number: 9624820
    Abstract: A control device for direct injection gasoline engines includes a fuel injection control part (engine control device) composed to control a fuel injection aspect of an injector. The fuel injection control part changes an injection mode of the injector by changing the lift amount of the injector and the injection interval of the fuel respectively. The fuel injection control part switches between a first injection mode, which includes multiple times of the fuel injection with the small lift amount of the injector and the small interval of the fuel injection, and a second injection mode, which includes multiple times of the fuel injection with the bigger lift amount of the injector and the larger interval of the fuel injection than those of the first injection mode, according to an operating state of the engine body.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: April 18, 2017
    Assignee: Mazda Motor Corporation
    Inventors: Yuji Harada, Tatsuya Tanaka, Masatoshi Seto, Hiroyuki Yamashita, Tsugio Fukube
  • Patent number: 9528480
    Abstract: A valve assembly includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity to control a fluid flow through the fluid outlet portion, a guide coupled to the valve needle, an electro-magnetic actuator unit configured to actuate the valve needle and comprising an armature axially moveable in the cavity relative to the valve needle, the armature configured to be coupled to the guide when the valve needle leaves the closing position and configured to mechanically decouple from the guide due to its inertia when the valve needle reaches the closing position, and an armature spring coupled to the armature to provide a force to the armature contributing coupling the armature with the valve needle. A block-shaped stop element axially adjacent the armature and coupled to the valve body limits the axial movement of the armature.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: December 27, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Marco Omeri
  • Patent number: 9482198
    Abstract: An electronic fuel injection throttle body unit has a core body with two side components. The two side components each including a fuel delivery passage. Four air intake passages extending vertically through the throttle body. Valves are rotatable within the air intake passages. The valves being connected to valve shafts that rotate about respective valve shaft axes. The valve shaft axes and the fuel delivery passages are perpendicular to each other.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 1, 2016
    Assignee: Fuel Injection Technology Inc.
    Inventors: Kenneth William Farrell, Jeremy Lynn Schmidt
  • Patent number: 9446750
    Abstract: A valve system of a braking device provided with a stroke simulator that is connected via a connection passage with a pipe for making a master cylinder communicate with a wheel cylinder; and a third shut-off valve that is a solenoid valve and performs opening and closing of a communication between the master cylinder and the stroke simulator, wherein the third shut-off valve is a normally closed valve; and the valve system opens the third shut-off valve by applying a start-up voltage, thereafter keeps the open state of the third shut-off valve by alternately applying a holding voltage that is lower than the start-up voltage and the start-up voltage, in order to prevent heat generated in the valve from becoming excessively high even while keeping the open state of the valve.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: September 20, 2016
    Assignees: Honda Motor Co., Ltd., Nissin Kogyo Co., Ltd.
    Inventors: Takashi Shimada, Hiroaki Tokoi, Takaaki Komaba
  • Patent number: 9440835
    Abstract: A fluid dispensing assembly, including a valve, a housing, a user interface, and a fitting to couple to a fluid source. The valve may include a first sensor detecting proper placement of the fluid container based on a magnetic material positioned at the bottom of the fluid container, a plunger having a plunger shaft coupled thereto, the plunger selectively placing the valve in fluid communication with the fluid container, and a solenoid coupled to the plunger shaft and moving the plunger shaft to transition the plunger between an open position and a closed position. The user interface may be coupled to the valve to enable selection of at least a fluid container size and a dispensing mode.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: September 13, 2016
    Assignee: GrinOn Industries
    Inventor: Joshua Springer
  • Patent number: 9435289
    Abstract: A voltage measuring module measures first and second voltages at first and second electrical connectors of a fuel injector of an engine. A first summer module determines a first sum of (i) a difference between the first and second voltages and (ii) N previous values of the difference between the first and second voltages, wherein N is an integer greater than or equal to one. A second summer module determines a second sum of (i) the first sum and (ii) M previous values of the first sum, wherein M is an integer greater than or equal to one. A first difference module determines a first difference based on the second sum. A second difference module determines a second difference between (i) the first difference and (ii) a previous value of the first difference. An injector driver module selectively applies power to the fuel injector based on the second difference.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: September 6, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Jonathan T. Shibata, Michael J. Lucido
  • Patent number: 9429095
    Abstract: A method of operating an internal combustion engine is provided. An air/fuel ratio of the internal combustion engine is determined. At least one of a fuel injection quantity and an intake air flow is adjusted to provide an air/fuel ratio between about 15 and about 18. A compression ratio within a cylinder of the engine is determined. Droplet size of fuel provided by a fuel injector is adjusted based upon the compression ratio determined within the cylinder of the engine.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: August 30, 2016
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventor: Russell P. Zukouski
  • Patent number: 9404456
    Abstract: One passage for swirling is formed in an orifice plate fixed on a nozzle body. Two swirl chambers in which fuel is caused to swirl so that the fuel has swirling force are provided at an end of the one passage for swirling on the downstream side of the flow direction of fuel. Therefore, the collision between the swirling flow in the swirl chamber and the fuel flowing in the passage for swirling is mitigated, and the swirling flow can be smoothly produced to promote pulverization of sprays injected from fuel injection ports.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: August 2, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshio Okamoto, Yoshihito Yasukawa, Noriyuki Maekawa, Nobuaki Kobayashi, Takahiro Saito
  • Patent number: 9371824
    Abstract: The present invention relates to a dosing valve and to a dosing device (15) for introducing a liquid medium into an exhaust-gas stream of an internal combustion engine (1) of a motor vehicle. The dosing device (15) has a pump (23) for delivering the liquid medium. The medium is injected into the exhaust-gas stream by means of a dosing valve (13) which can be controlled by way of an electromagnet (65). The dosing device (13) comprises a housing (33) with a stepped bore (34, 34.1, 34.2, 34.3, 34.4), wherein a pump sleeve (47) is guided sealingly in one portion (34.4) of the stepped bore (34). A hollow-bored piston (49) is guided sealingly in a central bore (48) of the pump sleeve (47). In a low-pressure chamber (61), an armature (69) is fastened to the piston (49), and furthermore a magnet sleeve (67) is fastened to the housing (33).
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: June 21, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Matthias Burger
  • Patent number: 9359983
    Abstract: An actuator arrangement for an electromagnetically operated fuel injector includes a pole member having a first end face and defining an aperture extending from the first end face and an actuator core received within the aperture. The actuator core carries at least one contact member having a contact face that is exposed through the aperture. An encapsulating member is received within the aperture and surrounds the at least one contact member. The first end face of the pole member, the contact face and the encapsulating member are arranged to provide the actuator arrangement with a substantially planar surface for mating with an adjacent component, in use.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: June 7, 2016
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Thomas W. Canepa-Anson, Bashir Khan, Anthony Thomas Harcombe, Mark S. Harper, Mark S. Graham, Stephen K. Bowers
  • Patent number: 9347393
    Abstract: A method of controlling a fuel injection device that can control a small amount of injection is provided. A fuel injection device for use in an internal combustion engine, includes: a valve body that can open and close a fuel passage, a needle that transfers a force with the valve body, and executes valve opening/closing operation, and an electromagnet that includes a coil and a magnetic core provided as a driver for driving the needle, and a cylindrical nozzle holder disposed on an outer periphery of the magnetic core and the needle, in which a current is supplied to the coil to exert a magnetic attractive force between the magnetic core and the needle to open the valve body.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 24, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Yoshihito Yasukawa, Noriyuki Maekawa, Takuya Mayuzumi, Tohru Ishikawa
  • Patent number: 9016603
    Abstract: A common rail fuel injector includes a control valve member unattached to, but trapped between, a push pin and a seat of an injector body. The push pin has a head that includes a contact surface and a crown that includes a stop surface. An air gap surface of an armature is located between a top of the head and the stop surface of the crown when the contact surface of the push pin is in contact with the armature. The stop surface of the crown is located between an air gap plane of a stator assembly and the air gap surface of the armature. The push pin, the armature and the control valve member are movable among a rest configuration, an injection configuration, and an over travel configuration.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 28, 2015
    Assignee: Caterpillar Inc.
    Inventor: Richard Holtman
  • Patent number: 8997718
    Abstract: The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One such injector/igniter can include a body having a base portion opposite a nozzle portion. The base portion receives fuel into the body and the nozzle portion can be positioned adjacent the combustion chamber. The injector further includes a valve carried by the nozzle portion that is movable between a closed position and an open position to inject the fuel into the combustion chamber. An actuator is coupled to the valve and extends longitudinally through the body towards the base portion, and a driver is carried by the body and is movable between a first position and a second position. In the first position the driver does not move the actuator and in the second position the driver moves the actuator to move the valve to the open position.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: April 7, 2015
    Assignee: McAlister Technologies, LLC
    Inventor: Roy Edward McAlister
  • Patent number: 8960157
    Abstract: The drive device is configured to, during a time interval between an earlier fuel injection (first fuel injection) and a later fuel injection (second fuel injection), supply an electromagnetic coil with an intermediate current at a voltage with a level of not opening the valve. Further, the drive device sets a voltage application for supplying the intermediate current to initiate before a valve closing in the earlier fuel injection and terminate before half a period of time between a first instant when the valve is closed in the earlier fuel injection and a second instant when a supply of a drive current for opening the valve is initiated in the later fuel injection.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: February 24, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Hideharu Ehara, Tohru Ishikawa, Noriyuki Maekawa, Takuya Mayuzumi
  • Publication number: 20150040869
    Abstract: A fluid injector includes a valve body, a valve needle and axially moveable in the valve body between a closing position that prevents a fluid injection and further positions that permit the fluid injection, an armature coupled to the valve needle for displacing the valve needle away from the closing position, and a solenoid assembly including at least a first and second coil and operable to magnetically actuate the armature via an electrical signal. A method for operating the fluid injector includes applying the electrical signal to the first coil to generate a magnetic field to move the armature for displacing the valve needle away from the closing position, evaluating a voltage across terminals of the first coil, and controlling the second coil with a further electrical signal to saturate a magnetic field in a portion of the valve body between the armature and solenoid assembly during evaluating the voltage.
    Type: Application
    Filed: June 2, 2014
    Publication date: February 12, 2015
    Inventors: Stefano Filippi, Mauro Grandi, Francesco Lenzi, Valerio Polidori
  • Publication number: 20150007797
    Abstract: A method for operating a fuel system for an internal combustion engine during engine start, is disclosed. The fuel system includes a fuel supply system in fluid communication with a fuel delivery system and a cooling circuit. The cooling circuit is configured to transfer heat from the fuel delivery system. The method includes provision of fuel to the fuel delivery system and isolation of the fuel from the cooling circuit. Thereafter, a pressure between the fuel supply system and the fuel delivery system is sensed. Determination is carried out when the pressure is greater than a predetermined threshold fuel pressure. Subsequently, based on the determined pressure, fuel to the cooling circuit is provided.
    Type: Application
    Filed: September 23, 2014
    Publication date: January 8, 2015
    Applicant: Caterpillar Inc.
    Inventor: Chad F. Ahmad
  • Patent number: 8925524
    Abstract: A fuel injector includes a nozzle body with a nozzle bore, a first valve needle received within the nozzle bore and being engageable with a first seat region to control fuel delivery through a first set of nozzle outlets, and a second valve needle received within a valve bore provided in the first valve needle and being engageable with a second seat region arranged to control fuel delivery through a second set of nozzle outlets. A control chamber for fuel is provided between the first valve needle and the second valve needle, wherein movement of the first valve needle is responsive to fuel pressure in the control chamber, and wherein movement of the second valve needle is mechanically coupled to an armature of the first actuator arrangement. A second actuator arrangement controls movement of the first valve needle by controlling fuel flow into the control chamber.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: January 6, 2015
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventor: Michael Peter Cooke
  • Publication number: 20140366846
    Abstract: A control apparatus for an internal combustion engine includes a fuel injection valve having a nozzle body that includes a fuel receiving part provided at a downstream side of a seat part with which a seat contact part comes into contact, and a plurality of nozzle holes. The control apparatus executes one or a plurality of small injections during one cycle in addition to main injection. Further, the control apparatus increases fuel injection amount of a first small injection at the current cycle at the time of low load operation while decreases the fuel injection amount of the first small injection at the time of high load operation, when post injection has not been executed in the last cycle and the small injection is executed first at the current cycle in a case in which a variation in the learned value for fuel injection amount is present.
    Type: Application
    Filed: January 26, 2012
    Publication date: December 18, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masato Ikemoto
  • Patent number: 8910882
    Abstract: A fuel injector for an engine is disclosed. The fuel injector may have a fuel nozzle with at least one injection orifice, and a needle element movable within the fuel nozzle between a first position at which the needle element inhibits fuel flow and a second position at which fuel flow is substantially uninhibited. The fuel injector may also have a control chamber located at a base end of the needle element, a body, and a control valve disposed within the body and movable to selectively drain the control chamber, thereby causing the needle element to move between the first and second positions. The fuel injector may further have an armature disposed within an armature cavity of the body and selectively energized to move the control valve, and a pressure reducer disposed within the body and configured to reduce a pressure of the armature cavity.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: December 16, 2014
    Assignee: Caterpillar Inc.
    Inventors: Bryan D. Moore, Daniel R. Ibrahim, Sana Mahmood, Adam Duresky, Christopher D. Hanson
  • Publication number: 20140360472
    Abstract: A fuel injection device for smooth discharge of a gas accumulated therein comprising a fuel pump, a solenoid valve for injecting pressurized fuel into the intake passage of an engine, a high-pressure fuel passage extending from the fuel pump to the solenoid valve and has a medially positioned constant-pressure chamber, and a fuel return passage connected to a fuel return pipe, with the fuel return passage extending from the constant-pressure chamber and having a medially positioned priming pump. The constant-pressure chamber is configured with the top wall in the upper space thereof disposed above the opening of the high-pressure fuel passage opposite the solenoid valve, the fuel return passage opens into the upper space at a position above the opening of the high-pressure fuel passage, and the gas accumulating in the constant-pressure chamber is discharged from the upper space toward the fuel tank via the fuel return passage.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 11, 2014
    Inventors: Takumi Nonaka, Hideki Watanabe
  • Patent number: 8905003
    Abstract: In a fuel injector, a body has formed therein a spray hole and a fuel supply passage. Fuel supplied to the fuel supply passage is delivered to the spray hole. A fuel pressure sensor produces a signal indicative of a pressure of the fuel. First terminals are attached to the fuel pressure sensor and include a terminal for outputting the signal. The fuel pressure sensor is threadedly installed in the body while the first terminals are rotated. A connector includes a housing attached to the body, and second terminals supported by the housing for external electric connection of the fuel pressure sensor. Wires are operative to establish electrical connection between the first terminals and the second terminals. A wire holder is configured to hold each of the plurality of wires at least partly around the fuel pressure sensor.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: December 9, 2014
    Assignee: Denso Corporation
    Inventors: Kouji Morita, Yutaka Miyamoto, Jun Kondo, Tomoki Fujino
  • Publication number: 20140311455
    Abstract: A dual fuel injector utilizes first and second control valves to open and close first and second nozzle outlet sets to inject a first fuel and a second fuel, respectively. The first and second fuels may be natural gas and liquid diesel, respectively. Control over liquid and diesel fuel injection events includes control lines that include F, A and Z orifices.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 23, 2014
    Applicant: Caterpillar, Inc.
    Inventors: Hoisan Kim, Mark F. Sommars
  • Patent number: 8863727
    Abstract: This disclosure provides a fuel injector system and method in which the timing of events in during period of fuel injection of a piezoelectric-actuated fuel injector are estimated based on sensed forces within the injector. The force sensor is positioned between a piezoelectric actuator and a hydraulic link assembly mechanically coupled with the piezoelectric actuator, and the force sensor operable to output a signal corresponding to forces between the piezoelectric actuator and the hydraulic link assembly. From information contained in the sensor output signal, timing in the injection period of at least one fueling characteristic based can be estimated to allow for adjusting fuel injector characteristics to compensate for variations affecting fuel injection, such as manufacturing tolerances, environmental conditions, and deterioration/wear.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: October 21, 2014
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: Syed S. Jalal, Douglas W. Memering, Richard E. Reisinger, Edward Benjamin Manring, Jesus Carmona-Valdes, Anthony A. Shaull, Shankar Venkataraman, William David Daniel
  • Publication number: 20140290623
    Abstract: A fuel injection timing management system for a dual fuel engine is configured to determine a first diesel injection timing corresponding to a first mode of operation of the engine system and a second diesel injection timing corresponding to a second mode of operation. Further, determine a direction of change in a mode of operation of the engine system, and selectively perform a change in the diesel injection timing from the first diesel injection timing to the second diesel injection timing at a first rate of transition or a second rate of transition, based on the direction of change in a mode of operation of the engine system.
    Type: Application
    Filed: April 1, 2013
    Publication date: October 2, 2014
    Applicant: Caterpillar Inc.
    Inventors: Arvind Sivasubramanian, David J. Lin, Keith A. Intveld, Jeffrey A. Howard, Christopher F. Gallmeyer
  • Patent number: 8839765
    Abstract: An apparatus for injecting fuel into the combustion chamber of an internal combustion engine includes an injection nozzle (5) having an axially displaceable nozzle needle (17) to which the pressure present in a control chamber (13) when filled with fuel, can be applied in the axial direction to control the opening and closing movements of the needle. The pressure in the control camber (13) is controlled via a solenoid valve (7) opening or closing at least one inlet or outlet duct for fuel. A magnetic coil (28) cooperates with an armature (27) and a valve-closing member is coupled to the armature (27) and that can be pressed against a valve seat (15). The armature (27) is disposed in an armature chamber (19) into which the inlet or outlet duct (14) opens. The magnetic coil (28) is covered by a metal protective plate (30) on the side of the armature chamber.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: September 23, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Franz Guggenbichler
  • Publication number: 20140261333
    Abstract: A control system for an engine is disclosed. The control system may have a first gaseous-fuel injector configured to inject gaseous fuel into a first intake passage associated with at least a first cylinder and a second gaseous-fuel injector configured to inject gaseous fuel into a second intake passage associated with at least a second cylinder. The control system may also have a variable orifice disposed within the second intake passage upstream of the first gaseous fuel injector. The control system may additionally have a sensor configured to provide a signal indicative of a performance parameter of the engine and a controller electronically connected to the variable orifice and the sensor. The controller may be configured to move the variable orifice to adjust a ratio of air-to-fuel in the first and second intake passages based on the signal.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: ELECTRO-MOTIVE DIESEL, INC.
    Inventors: AAron G. Foege, David T. Montgomery
  • Publication number: 20140251278
    Abstract: A fuel injection method in an internal combustion engine and an internal combustion engine for performing the fuel injection method. The method includes heating fuel to a temperature between 300° F. and 840° F. (150 and 450° C.); pressurizing the fuel to a pressure exceeding 40 bar; pre-injecting at least 10% of the fuel charge as a pre-injected fuel during the intake stroke; injecting a fuel charge over at least part of the compression stroke into the cylinder; and injecting an ignition-injection of at least 10% of the fuel in a supercritical condition during the compression stroke at a rotational angle between 90° BTDCF and TDCF into the cylinder. The method and related combustion engine create a good mix of premix combustion and diffusion combustion increasing efficiency and consequently reducing emissions to the environment while also keeping noise and vibrations low.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: Transonic Combustion, Inc.
    Inventors: Christopher de Boer, Shizuo Sasaki
  • Patent number: 8807120
    Abstract: An internal combustion engine has at least one injection valve for delivering fluid, which has an electromagnetic actuator. A final stage unit is designed for creating a current profile for triggering the electromagnetic actuator with at least one given profile parameter (PP). Upon achieving magnetic saturation of a magnetic circuit of the electromagnetic actuator an assigned saturation current (I_sat_mes) is determined and at least one profile parameter (PP) is adjusted depending on the saturation current (I_sat_mes) thus determined and a given reference saturation current.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: August 19, 2014
    Assignee: Continental Automotive GmbH
    Inventors: Johannes Beer, Milos Tichy
  • Patent number: 8805608
    Abstract: In a crawler construction machine including an engine and a fuel adjustment dial that adjusts a speed of the engine according to operation loads of the working equipment, the fuel adjustment dial is a rotary notchless dial that is continuously variably adjustable. The crawler construction machine includes: an adjustment position detector that detects a rotation adjustment position of the fuel adjustment dial; an engine controller that is connected to the adjustment position detector and controls the speed of the engine based on an adjustment position of the fuel adjustment dial; and a display device that is connected to the engine controller and displays on a screen a percentage value of the adjustment position of the fuel adjustment dial in which the maximum rotation position of the fuel adjustment dial is defined as 100%.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 12, 2014
    Assignee: Komatsu Ltd.
    Inventors: Hayato Matsumoto, Hiroshi Sawada, Kazuyoshi Morimoto
  • Publication number: 20140196687
    Abstract: A dual fuel engine utilizes a compression ignited pilot injection of liquid diesel fuel to ignite a mixture of gaseous fuel and air in each engine cylinder. The gaseous fuel is injected at a relatively low pressure directly into the engine cylinder from a fuel injector. The liquid diesel fuel is injected directly into the engine cylinder from the same fuel injector. In-cylinder dynamic gas blending during the compression stroke can reduce potential hydrocarbon slip that could occur when unburned fuel resides in crevice volumes within the engine cylinder.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 17, 2014
    Applicant: Caterpillar, Inc.
    Inventors: Dana R. Coldren, Cory A. Brown
  • Publication number: 20140190452
    Abstract: An internal combustion engine has an ignition promotion unit that has a function of promoting ignition of fuel sprays formed by the small quantity injections by supplying the fuel sprays with electric energy. The engine is provided with a control device which has a combustion control unit that carries out processing of causing the fuel injection valve to perform the plurality of times of small quantity injections so that fuel sprays formed by the first-time small quantity injection from among the plurality of times of small quantity injections are connected with one another by the fuel sprays formed by the subsequent small quantity injections from among the plurality of times of small quantity injections.
    Type: Application
    Filed: June 29, 2012
    Publication date: July 10, 2014
    Applicant: IMAGINEERING, INC.
    Inventors: Yuji Ikeda, Naoki Toda, Shigeo Nomura
  • Publication number: 20140182558
    Abstract: Disclosed herein is a novel ICE termed the Leaschauer Engine (LE). The Leaschauer Engine (LE) is a single or multiple step compression cycle ICE machine, employing the Pressure/Heat Detonation Principle (Diesel Principle). The Leaschauer Engine differs significantly from a conventional ICE machine by its ability to employ extreme combustion pressure to achieve high combustion efficiency operation without risking a pre-detonation condition.
    Type: Application
    Filed: February 4, 2014
    Publication date: July 3, 2014
    Inventor: Eitan Leaschauer
  • Publication number: 20140182557
    Abstract: Provided with a control device for an in-cylinder injection type internal combustion engine that reduces an amount of fuel attaching to and remaining on a piston crown surface and a cylinder bore wall surface so as to suppress an increase in the number of exhaust particles of PM when fuel injection is performed a plurality of times in one burning cycle. In divided multi-stage injection in which the fuel to be injected in one burning cycle is divided into a plurality of times, an injection amount rate of injection at an early timing among injections divided into the plurality of times is set according to a fuel cut continuous time at a timing when the fuel injection is resumed from a fuel cut state.
    Type: Application
    Filed: May 18, 2012
    Publication date: July 3, 2014
    Inventor: Yoshinobu Arihara
  • Publication number: 20140174405
    Abstract: A sub out-orifice and an in-orifice are respectively formed in a low pressure passage and a high pressure passage of a fixed plate. A control valve is provided at an outlet port of the low pressure passage. In a normal control, the control valve starts its control-valve opening operation when a movable plate is in contact with the fixed plate. In an interval-shortening control, the control valve starts the control-valve opening operation at an earlier timing than that in the normal control, namely during a course in which a valve body is still in its valve-body closing operation.
    Type: Application
    Filed: December 26, 2013
    Publication date: June 26, 2014
    Applicant: DENSO CORPORATION
    Inventor: Naofumi ADACHI