Unitary Injection Nozzle And Pump Or Accumulator Plunger Patents (Class 239/88)
  • Patent number: 10174730
    Abstract: A fuel injector for use in delivering fuel to an internal combustion engine includes a nozzle having a valve needle which is moveable with respect to a valve needle seating through a range of movement between a fully-closed position and a fully-open position to control fuel delivery through at least one nozzle outlet, whereby movement of the nozzle needle is controlled by fuel pressure within a control chamber. A nozzle control valve controls fuel flow into and out of the control chamber to pressurize and depressurize the control chamber, respectively. The fuel injector also includes a variable flow passage in communication with the control chamber through which fuel flows out of the control chamber at a variable rate throughout the range of movement of the valve needle so that movement of the valve needle is damped to a greater extent as it approaches the fully-open position.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: January 8, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventor: Anthony Thomas Harcombe
  • Patent number: 10024285
    Abstract: A piezo injector includes a piezo actuator arranged in an actuator chamber and a valve plunger arranged in a valve plunger bore and having a first end face facing the piezo actuator. The valve plunger is arranged between a first control chamber defined by a valve plunger bore portion delimited by the first end face and a spring chamber formed by a valve plunger bore portion opposite the first control chamber. A second control chamber is delimited by a second face of a nozzle needle and a sleeve guided by the nozzle needle. A leakage pin is arranged in a leakage pin bore between the piezo actuator and the first end face of the valve plunger. The leakage pin bore is formed in an intermediate plate arranged on a side of a control plate facing the piezo actuator, the valve plunger bore being formed in said control plate.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: July 17, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Willibald Schuerz
  • Patent number: 9976669
    Abstract: A container treatment plant and a method for displacing an element of a valve or a diverting unit of a container treatment plant. The container treatment plant comprises at least one element for treating containers. The element is part of a valve or a diverting unit. The container treatment plant also comprises a displacing unit for displacing the element between a first position and a second position, wherein the displacing unit comprises a magnetically operating actuator such that a rotary motion caused by the actuator displaces the element with the aid of a mechanism between its first and second positions.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: May 22, 2018
    Assignee: KRONES AG
    Inventors: Wolfgang Hahn, Eduard Handschuh, Klaus Voth, Dieter Finger, Florian Geltinger, Hartmut Davidson, Martin Seger
  • Patent number: 9863385
    Abstract: The present invention relates to a fuel injector for use in delivering fuel to an internal combustion engine. The fuel injector includes a nozzle having a valve needle which is movable with respect to a valve needle seat. The valve needle travels through a range of movement between a closed position and an open position to control fuel delivery through at least one nozzle outlet. The valve needle cooperates with a needle sleeve or a control member which is located in a piston guide. The valve needle is movable relative to the needle sleeve or the control member. The needle sleeve or the control member is movable relative to the piston guide. The invention also relates to a method of operating a fuel injector; and a fuel injector control unit.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: January 9, 2018
    Assignee: DELPHI INTERNATIONAL OPERATIONS S.A.R.L.
    Inventor: Mark S. Graham
  • Patent number: 9714633
    Abstract: The present invention relates to a control valve for a fuel injector. The control valve has a control valve body which defines a supply passage for high pressure fuel. A control chamber and a pressure compensating chamber are provided in the control valve. The control chamber and the pressure compensating chamber are both in fluid communication with the supply passage. A control valve member is provided for controlling fuel pressure in the control chamber. The pressure compensating chamber is spaced radially outwardly from the control chamber. The invention also relates to a control valve member having a pressure compensating cavity.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: July 25, 2017
    Assignee: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L.
    Inventors: Richard Denis Jacques Alain Enters, David Bonneau, Thierry Thibault, Jean-Christophe Oge, Philippe Legrand
  • Patent number: 9679690
    Abstract: A solenoid (30) is provided. The solenoid (30) includes a magnetic core (304). The solenoid (30) also includes a pole piece (305) positioned substantially coaxially with the magnetic core (304). An over-molded component (303) is provided that is over-molded around at least a portion of the magnetic core (304) and at least a portion of the pole piece (305).
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: June 13, 2017
    Assignees: Norgren GmbH, Norgren GT Development Corporation
    Inventors: Vasile Nila, Gerhard Uiselt, John Michael Morris
  • Patent number: 9670890
    Abstract: A fuel injector comprises a supply means for high pressure fuel, an injection nozzle including a valve needle engageable with a valve needle seating to control fuel delivery from the injector, a first filling flow path providing flow from the supply means into a control chamber, and a control valve for controlling fuel pressure within the control chamber. The control valve comprises a control valve member slidable within a guide bore of a valve housing. The injector further comprises a drain flow path including a drain restriction and permitting flow from the control chamber to a second valve chamber when the control valve member is in a second state, and a second filling flow path permitting flow from a first valve chamber into the control chamber when the control valve member is in a first state, wherein the second filling flow path bypasses the drain restriction.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: June 6, 2017
    Assignee: Delphi Inernational Operations Luxembourg S.A.R.L.
    Inventors: Andrew J. Limmer, Christopher S. Hardy, Joseph M. Luck
  • Patent number: 9541041
    Abstract: An injection valve for injecting fuel into a combustion chamber of an internal combustion engine comprises a valve seat, a valve element, at least one injection opening formed in the valve seat and leading to the combustion chamber, the at least one injection opening opened or closed by a stroke motion of the valve element, a catalytic coating provided in a region of the injection valve which faces the combustion chamber, and at least one protuberance which is elongated in a direction of the combustion chamber and projects into the combustion chamber.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: January 10, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Klemens Grieser, Oliver Berkemeier, Jens Wojahn, Jan Linsel, Kay Hohenboeken
  • Patent number: 9500170
    Abstract: A fuel injector is provided. The fuel injector includes a sleeve having a first end proximate an outlet; a piston slidingly received in the sleeve, the piston having a first end proximate the outlet; a pumping chamber at least partially defined by the sleeve between the first end of the piston and the outlet; and a normally-open inlet valve through which fuel passes to enter the pumping chamber.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: November 22, 2016
    Assignee: PICOSPRAY, LLC
    Inventor: Lihang Nong
  • Patent number: 9464613
    Abstract: A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis to control the opening/closing of a nozzle that injects fuel into a cylinder of the engine; the injector body houses a metering servovalve having a control chamber, which is axially delimited by the control rod and communicates with an inlet and with a discharge channel; the metering servovalve is provided with a shutter, which slides axially on an axial guide, from which the discharge channel exits, to open and close the discharge channel and, in consequence, vary the pressure in the control chamber; the discharge channel has three restrictions having calibrated passage sections and arranged in series with each other to divide the pressure drop along the discharge channel.
    Type: Grant
    Filed: December 8, 2012
    Date of Patent: October 11, 2016
    Assignee: C.R.F. SOCIETA CONSORTILE PER AZIONI
    Inventors: Mario Ricco, Raffaele Ricco, Sergio Stucchi, Onofrio De Michele
  • Patent number: 9453483
    Abstract: A duel fuel system includes a plurality of fuel injectors that have a non-injection configuration, a liquid fuel injection configuration, a gaseous fuel injection configuration and a combined fuel injection configuration. Each of the fuel injectors is fluidly connected to a gaseous fuel common rail and a liquid fuel common rail. Each of the fuel injectors includes a three way gas control valve and a three way liquid control valve that move along a common centerline. A gas control chamber of each fuel injector is fluidly connected to the liquid fuel common rail by two passages in parallel when the gas control valve member is in a first position corresponding to the non-injection configuration. The liquid control chamber of each fuel injector is also fluidly connected to the liquid fuel common rail by two passages in parallel when the liquid control valve is in a first position, again corresponding to the non-injection configuration.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: September 27, 2016
    Assignee: Caterpillar Inc.
    Inventor: Hoisan Kim
  • Patent number: 9200606
    Abstract: An electronically controlled fuel injection valve can independently control the time to inject fuel and the amount of fuel to be injected in response to a control signal sent from the operating condition of an engine unlike a traditional mechanical fuel injection valve, and employs a control method for fuel injection that increases the force of lifting up a cutoff needle of an injection controller by delivering high-pressure fuel to a lower pressure chamber via a control needle, thereby rapidly controlling fuel injection. The electronically controlled fuel injection valve prevents a nozzle part from being constantly subjected to high pressure due to the nozzle part being not supplied with fuel when fuel is not injected, prevents a large amount of fuel from leaking into a combustion chamber when a part such as a needle is damaged, and simplifies the structure of a second flow path, thereby facilitating fabrication.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: December 1, 2015
    Assignee: HYUNDAI HEAVY INDUSTRIES, CO., LTD.
    Inventors: Dong-Hun Kim, Seung-Hyup Ryu, Tae-Hyung Park
  • Patent number: 9169813
    Abstract: A movable plate is movably accommodated in a pressure control chamber. A fixed plate is arranged above the movable plate, so that the movable plate is brought into contact with the fixed plate. The fixed plate has a high pressure passage for supplying fuel into the pressure control chamber and a low pressure passage for discharging the fuel from the pressure control chamber. A high pressure port and a low pressure port are formed at a lower end surface of the fixed plate. A first contacting surface is formed at the lower end surface and a first groove is formed in the first contacting surface for holding a part of fuel in a plate-contacted condition.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: October 27, 2015
    Assignee: DENSO CORPORATION
    Inventor: Naofumi Adachi
  • Patent number: 9133805
    Abstract: The invention relates to a fuel injector comprising an actuator module 2 arranged in a holding body 1, wherein the holding body 1 is braced by means of a tension nut 13 to a nozzle body 12 by means of at least one interposed intermediate body designed as a throttle plate 11, wherein the throttle plate 11 is penetrated by at least one high pressure channel 16, an inflow channel 18 having an inflow throttle, and an outflow channel 19 having an outflow throttle, and wherein a valve actuated by the actuator module 2, said valve having at least one valve pin 4 and a sealing sleeve 5, is arranged between the actuator module 2 and the throttle plate 11, forming a leakage chamber 21 facing the throttle plate 11. According to the invention, a fuel injector is provided, wherein the leakage discharge out of the leakage chamber 21 is ensured without impairing the tightness of the fuel injector in the areas adjacent to the throttle plate 11.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: September 15, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Uhlmann
  • Patent number: 9003775
    Abstract: A mounting arrangement for attaching a pump arrangement to an exhaust pipe at a boss includes a delivery nozzle section and a remaining section including a pump body. The mounting arrangement includes a packing for supporting the pump body at the remaining section of the pump arrangement.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: April 14, 2015
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Keith E. Wright, Michael Peter Cooke, Phillip D. Thompson, Simon Coster, Nick J. Oldfield, Martin Paul Hardy
  • Patent number: 8919677
    Abstract: An injection nozzle comprising a nozzle body provided with a bore within which a valve needle is moveable, the valve needle being engageable with a valve seating to control fuel delivery through a set of nozzle outlets, said nozzle outlets including respective entry openings defined in a wall of a sac volume of the nozzle body, wherein the valve needle includes a first valve region, a second valve region and a seat region defined by a transition between the first and second valve regions which seats against the valve seating when the nozzle is in a non-injecting state. The valve needle comprises a third valve region adjacent the second valve region, the third valve region having an outer surface defining a curved profile, the end of the outer surface terminating substantially in alignment with the entry openings when the valve needle is engaged with the valve seating.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: December 30, 2014
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Cecilia C. E. Soteriou, Marion L. Balin
  • Patent number: 8881709
    Abstract: A common rail single fluid injection system includes fuel injectors ramp shaped injection curves at both the front and back ends of an injection event. This is accomplished by including a check speed control device fixed in position within the check control chamber of a fuel injector. The check speed control device controls the speed of a check by restricting fuel flowing into and out of the check control chamber.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: November 11, 2014
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark F. Sommars
  • Patent number: 8864054
    Abstract: The invention relates to a fuel injector and, in particular, to a common-rail injector for injecting fuel into a combustion chamber of an internal combustion engine with a multi-part injection valve element, which can be adjusted between an open position and a closed position. A first part and a second part of the injection valve element are coupled to one another via a hydraulic coupler, which is bounded radially by a first guide for the first part and by a second guide for the second part. According to the invention, at least some sections of the first and the second guide are surrounded at their outer radii by fuel under high pressure, and the pressure realized in the hydraulic coupler is lower than the pressure radially outside the guides.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: October 21, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Matthias Burger, Hans-Christoph Magel
  • Patent number: 8863501
    Abstract: The invention relates to an injection system for injecting a fluid into a filter provided in an exhaust system, comprising at least two modules and at least one pressure compensation volume (44, 46, 48, 54, 56, 58), which is designed for feeding fluid to at least one of the modules and hydraulically connects at least two of the modules. Each module comprises at least one injection unit (40, 50, 60) designed for injecting fluid into the exhaust system.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: October 21, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Volker Reusing, Chris Weirauch, Stefan Stein
  • Patent number: 8733671
    Abstract: Fuel injectors with intensified fuel storage and methods of operating an engine therewith. At least one storage cavity is provided in the intensifier type fuel injector, with a check valve between the intensifier and the needle chamber and storage cavity preventing loss of injection pressure while the intensifier plunger cylinder is refilling with fuel. This provides very efficient injector operation, particularly at low engine loads, by eliminating the wasted energy of compressing, venting and recompressing fuel for injection. Various injector designs and methods of operating the same in an engine are disclosed.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 27, 2014
    Assignee: Sturman Digital Systems, LLC
    Inventor: Oded Eddie Sturman
  • Patent number: 8708247
    Abstract: In a method for injecting fuel into the combustion chamber of an internal combustion engine, the fuel is fed by at least one prefeed pump from a tank to at least one high-pressure pump and the high-pressure fuel fed by the high-pressure pump is supplied to the injector, wherein the injector has an injection nozzle with an axially movable nozzle needle protruding into a control chamber which can be fed with fuel under pressure and whose pressure is controlled by a control valve which opens or closes at least one inflow or outflow duct for fuel. Between the prefeed pump and the high-pressure pump, a partial volume of the fuel is branched off as a flushing volume and supplied to a flushing channel of the injector, wherein the flushing volume is directly supplied to the control valve such that the flushing volume flows at least partially through the control valve and preferably mixes with the fuel from the inflow or outflow duct, respectively.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: April 29, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Martin Bernhaupt, Jaroslav Hlousek, Christian Meisl
  • Patent number: 8708249
    Abstract: A fuel injector for a compression ignition internal combustion engine which comprises a fuel injection valve having an injection valve member which is moveable in use, under the influence of fuel pressure within an injection valve member control chamber acting upon it, between a closed position and an open position. The fuel injector further comprises a high pressure fuel supply passage to the injection valve member control chamber, and an actuator operable to open and close a discharge valve connected between the injection valve member control chamber and a fuel outlet passage to a low pressure reservoir or drain. A shut-off valve is provided in the high pressure fuel supply passage and the shut-off valve has a shut-off valve member which is moveable in use, under the influence of fuel pressure within a shut-off valve member control chamber acting upon it, between a closed position and an open position.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: April 29, 2014
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Eric Lecluse, Richard Denis Jacques Alain Enters, Eric Charleux
  • Patent number: 8708250
    Abstract: A fuel injection device includes a cylinder that defines a pressure chamber at an end portion of a nozzle needle. A floating plate as a control member is placed in the cylinder. A cutout portion and multiple grooves are formed in the floating plate. The cutout portion and the grooves causes a gap between a large-diameter inner circumferential surface and an outer circumferential surface to communicate with the pressure chamber. The cutout portion and the grooves reduce a contact surface portion between the cylinder and the floating plate and divide the contact surface portion into multiple island portions. As a result, it is possible to reduce the contact surface portion.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: April 29, 2014
    Assignee: Denso Corporation
    Inventors: Tsukasa Yamashita, Naofumi Adachi
  • Patent number: 8695892
    Abstract: In a fuel injection device, a control body has a pressure control chamber, an inflow port and an outflow port. The inflow port and the outflow port are opened at an abutting surface exposed to the pressure control chamber. In the pressure control chamber is arranged a floating plate for pressing the abutting surface by a pressing surface with the pressure of the fuel to interrupt communication between the inflow port and the pressure control chamber. The abutting surface of the control body is provided with an outer opposite surface portion opposite to an outer edge of the pressing surface in a displacement axis direction of the floating plate, and the outer opposite surface portion has a special depressed portion that is depressed in the displacement axis direction and that extends along the shape of the outer edge of the pressing surface.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: April 15, 2014
    Assignee: Denso Corporation
    Inventors: Yoichi Kobane, Shuichi Matsumoto, Naofumi Adachi, Tsukasa Yamashita, Fumihiro Fujikake
  • Patent number: 8690075
    Abstract: A common rail fuel injector includes a needle valve member that moves to open and close nozzle outlets for a fuel injection event responsive to pressure in a needle control chamber. Between injection events, the needle control chamber is fluidly connected to the fuel inlet by a first pathway that includes a Z orifice, and fluidly connected to the fuel inlet by a second pathway that includes an F orifice, an intermediate chamber and an A orifice. During an injection event, the needle control chamber is fluidly connected to a drain outlet by a third pathway that includes the A orifice, the intermediate chamber an E orifice and a buffer chamber, which may assist in avoiding cavitation erosion in a sensitive area associated with a flat control valve seat. Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: April 8, 2014
    Assignee: Caterpillar Inc.
    Inventors: Sana Mahmood, Zhenyu Li, Michael Curtis Herr, Gregory William Hefler, Linda Angharad Williams
  • Patent number: 8684284
    Abstract: Methods, processes, and apparatuses for the large scale synthesis of carbon nanostructures are provided. The apparatus for continuous large scale production of SWNTs includes a chamber. Positioned in one end of the chamber is a piston and at the other end is a tangential vortex created by gases forced into the chamber from opposite sides of the chamber walls. The chamber can be heated to reduce or eliminate agglomeration of small particles. The piston is used to push the catalyst towards the vortex, and the injection rate is controlled by the speed of the piston and the gas flow rate to create the vortex that also act as the transport gas. Thus, greater than 1 kg/h of an aerosolized, deagglomerated dry powder catalyst can be delivered to the reactor at a constant flow rate.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: April 1, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Avetik R. Harutyunyan
  • Patent number: 8662411
    Abstract: A fuel injection valve includes a nozzle needle interacting with a valve seat by longitudinal movements thereof, thus opening/closing an injection opening. The nozzle needle undergoes a locking force toward the valve seat pressure in a control space. A control valve adjusts pressure in the control space. The control valve has a control valve space connected to the control space, in which a control valve member is disposed longitudinally movably, and opens and closes a connection of the control valve space to a leakage oil space by longitudinal movement. The control valve member is surrounded by pressure in the control valve space and configured such that no or very little resulting hydraulic force acts upon the control valve member in the movement direction by the pressure in the control space, if the control valve member closes the connection of the control valve space to the leakage oil space.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: March 4, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Andreas Gruenberger
  • Patent number: 8622315
    Abstract: With reference to FIG. 1, the present invention provides a fuel injector (19) comprising a reed valve (35). The reed valve has at least one orifice and at least one reed valve blade, the or each reed valve blade having a valve head attached to at least one resilient spring arm. The or each valve head opens and closes a respective orifice in the valve seat. A support surrounds the reed valve blade(s). Each spring arm extending inwardly from the support. Each spring arm is curved.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: January 7, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Paul Bartholomew Ravenhill, Richard Matthew Hoolahan, Jeffrey Allen, Steven Barraclough
  • Patent number: 8602322
    Abstract: Providing a fuel injection valve of the accumulator injection system, whereby the surge pressure caused by the change of the fuel injection rate when the nozzle needle begin to be seated on is reduced or lessened; the deterioration as to the fuel injection performance and the strength of the injection valve components the deterioration which is caused by the surge pressures is prevented. A fuel injection valve of the accumulator injection system, the fuel injection valve including: a nozzle 1, a nozzle needle 2, and a control rod 23; wherein, the control rod is provided with a groove whereby the groove communicates the high pressure fuel passage prior to a fuel injection shot; the groove is disconnected to the high pressure fuel passage and the fuel is injected into an engine combustion chamber during the fuel injection shot; the groove communicates with the high pressure fuel passage at the end of the injection shot.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: December 10, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Hisao Ogawa
  • Patent number: 8602321
    Abstract: The invention relates to a ball valve for adjusting a flow of a fluid medium. The ball valve includes a valve seat and a rounded closing element, in particular a valve ball. Furthermore, the ball valve has an inlet with a choke valve and one diffuser arranged between the choke valve and the valve seat. The diffuser includes a constriction on the side facing the valve seat.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: December 10, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Gerhard Girlinger, Frank Traxel, Roland Mitter
  • Patent number: 8579207
    Abstract: Multiple intensifier injectors with positive needle control and methods of injection that reduce injector energy consumption. The intensifiers are disposed about the axis of the injectors, leaving the center free for direct needle control down the center of the injector. Also disclosed is a boost system, increasing the needle closing velocity but without adding mass to the needle when finally closing. Direct needle control allows maintaining injection pressure on the fuel between injection events if the control system determines that enough fuel has been pressurized for the next injection, thus saving substantial energy when operating an engine at less than maximum power, by not venting and re-pressurizing on every injection event.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: November 12, 2013
    Assignee: Sturman Digital Systems, LLC
    Inventor: Oded Eddie Sturman
  • Patent number: 8544767
    Abstract: A fuel injection device has therein a recovery channel provided in a first valve body, and a fuel channel provided in the first valve body and a second valve body. The fuel channel is opened by openings at a first end surface of the first valve body and a second end surface of the second valve body. One of the first end surface and the second end surface is provided with an end surface groove connected to the recovery channel. In the fuel injection device, the end surface groove is provided to enclose at least a part of the opening and is separated from the opening by a clearance, and one of the first valve body and the second valve body has a side surface groove extending in a circumferential direction at an outer periphery of the one of the first valve body and the second valve body.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: October 1, 2013
    Assignee: Denso Corporation
    Inventors: Naofumi Adachi, Tsukasa Yamashita
  • Patent number: 8500036
    Abstract: A component includes a transmission arrangement for transmitting a force between an actuator and a control valve. The transmission arrangement includes a post that is associated with the actuator. The control valve is displaceable to an open position from a closed position when an opening force is applied to the control valve that is greater than a closing force provided to the control valve. The transmission arrangement is disposed in the component between the post and the control valve actuator and arranged to mechanically transmit by physical contact an actuator force from the post to the control valve when the post begins to travel towards the extended stroke position, and hydraulically amplify the actuator stroke between the post and the control valve when the post travels from the retracted stroke position to the extended stroke position.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: August 6, 2013
    Assignee: Caterpillar Inc.
    Inventors: Jay Venkataraghavan, Alan R. Stockner
  • Patent number: 8480009
    Abstract: A low leakage large bore fuel system includes a common rail fluidly connected to at least one of a source of heavy fuel oil and a source of distillate diesel fuel. A plurality of fuel injectors are fluidly connected to the common rail and each include a cooling inlet and a cooling outlet. Each fuel injector also includes an electrical actuator coupled to a direct operated nozzle check valve by a pilot valve member and a control valve member. Fuel leakage is reduced between injection events by equalizing pressures in a pilot control chamber and an intermediate control chamber that are separated by a guide surface of the control valve member. Also, between injection events the pilot valve member blocks a drain outlet from a common rail inlet of the fuel injector.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 9, 2013
    Assignee: Caterpillar Inc.
    Inventors: Christopher D. Hanson, Stephen Lewis, Qursheed Hussain Mohammed
  • Patent number: 8474734
    Abstract: An injector includes a nozzle body, a main body including a supply port on the outer peripheral surface of the main body and a high pressure passage, and a fuel pressure sensor on an outer peripheral surface of the main body to detect fuel pressure. The high pressure passage has a first passage extending from the supply port in a radial direction of the main body, and a second passage extending from a fuel downstream end portion of the first passage toward an injection hole in an insertion direction of the nozzle body. The supply port and the sensor are diametrically opposed to each other. The main body includes a sensor passage, which branches from the high pressure passage to extend from the fuel downstream end portion of the first passage in an imaginary extension of the first passage so that fuel flows into the sensor through the sensor passage.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: July 2, 2013
    Assignee: Denso Corporation
    Inventors: Jun Kondo, Tomoki Fujino, Shu Kagami
  • Patent number: 8459576
    Abstract: A dual fuel common rail fuel injector includes a first and second control valve assembly and a first and second check needle. The dual fuel injector is capable of selectively injecting two different fuels such as diesel and liquid natural gas. The first and second control valve assemblies operate using a single fuel, such as diesel, as the control medium. The dual fuel common rail injector further includes a hydraulic lock assembly.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: June 11, 2013
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark Sommars, Xiangdong Ding
  • Patent number: 8448878
    Abstract: A common rail fuel injector includes a needle valve member that moves to open and close nozzle outlets for a fuel injection event responsive to pressure in a needle control chamber. Between injection events, the needle control chamber is fluidly connected to the fuel inlet by a first pathway that includes a Z orifice, and fluidly connected to the fuel inlet by a second pathway that includes an F orifice, an intermediate chamber and an A orifice. During an injection event, the needle control chamber is fluidly connected to a drain outlet by a third pathway that includes the A orifice, the intermediate chamber and an E orifice. Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: May 28, 2013
    Assignee: Caterpillar Inc.
    Inventors: Daniel Richard Ibrahim, Bryan David Moore, Christopher D. Hanson, Avinash Reddy Manubolu
  • Patent number: 8444070
    Abstract: A unit fuel injector (10) has a control valve (40) in which a valve spool (92) is displaceable within a bore (91) of a valve body (90) between a limit of displacement that fully opens an oil outlet port (42) to an oil inlet port (44) while closing an oil drain port (106) to the oil outlet port and a limit of displacement that closes the oil outlet port to the oil inlet port while opening the oil outlet port to the oil drain port. The valve spool has a spool body (96) whose geometry defines an exterior envelope of the valve spool. Permanent magnets (98, 100) are disposed within a bore of the spool body inside of the exterior envelope, and electromagnets (102, 104) are electromagnetically coupled with the permanent magnets for displacing the valve spool within the valve body bore.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: May 21, 2013
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Mahmoud S. El-Beshbeeshy, Grzegorz Siuchta, Rakesh Malhotra
  • Patent number: 8444060
    Abstract: A fuel injection apparatus with a deterioration detection device that includes a volume changing chamber, the volume of which is determined by fuel pressure inside the injector. After injector nozzle opens, the time for the volume changing chamber to change from an initial volume to a target volume is measured and used for calculating changes in nozzle orifice size. The value of orifice size change can be used for both diagnosing injector deterioration and compensating fuel flow rate in a feedback control. In addition to detecting injector deterioration and failures, the volume changing device also dampens effects of noise in fuel pressure to fuel flow rate control and decreases chances of after-injection and second injection.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: May 21, 2013
    Inventor: Mi Yan
  • Patent number: 8418941
    Abstract: The invention relates to an injector for a fuel injection system of an internal combustion engine, particularly in a motor vehicle, with an injector body which has a pressure booster section and a needle section. At least one injection hole is provided in the needle section. A nozzle needle which has an adjustable stroke is disposed in the needle section for controlling an injection of fuel through the at least one injection hole. A pressure booster is provided for increasing a fuel injection pressure relative to a system pressure. For this purpose, the pressure booster has a double-diameter or stepped piston, a control rod, and a pressure booster bottom which together form the boundary of a coupling chamber. A coupling path extends into the control rod and connects the coupling chamber, over a valve device which is located outside or within the injector, to a high-pressure supply of fuel.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: April 16, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Markus Melzer, Joachim Boltz
  • Patent number: 8413913
    Abstract: A unit fuel injector (30) has a boundary edge filter. A first endless annular internal space (100) is open to a holes (92) forming a fuel inlet port, a second endless annular internal space (102) that is spaced axially of the first endless annular internal space and through which fuel is supplied to an injection mechanism, and a series of circumferentially spaced apart, axially extending channels (104) through which fuel can pass from the first endless annular internal space to the second endless annular internal space.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: April 9, 2013
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventor: Erik Jordan Hansen
  • Patent number: 8398002
    Abstract: A fuel injection device includes a pressure control portion for controlling operation of a nozzle, and a body portion having therein a bent lead wire hole through which two lead wires of the pressure control portion are introduced to exterior. A first guide member having therein a pair of first guide grooves partitioned by a first partition member is inserted into the lead wire hole from one end side, a second guide member having therein a pair of second guide grooves partitioned by a second partition member is inserted into the lead wire hole from the other end side. The first partition member protrudes from one end portion of the first guide member to have a protrusion portion, which is fitted with a recess portion of the second partition portion at one end portion of the second guide member when the first and second guide members contact.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: March 19, 2013
    Assignee: Denso Corporation
    Inventors: Shu Kagami, Jun Kondo, Tomoki Fujino
  • Patent number: 8382006
    Abstract: A control valve includes a main body, the first coil assembly arranged on the first side of the main body and having the first contact surface and the first through hole extending from the first contact surface, the second coil assembly arranged on the second side of the main body and having the second contact surface and the second through hole extending from the second contact surface, and a spool arranged within the main body and configured to move between the first and second contact surfaces. The spool has the third contact surface facing the first contact surface, the fourth contact surface facing the second contact surface, and the third through hole extending from the third contact surface to the fourth contact surface.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: February 26, 2013
    Inventors: Jens Gebhardt, Martin Luedicke, Bernd Niethammer, Greg Hafner, Robert Roy
  • Patent number: 8366018
    Abstract: Oil intensified common rail injectors that combine a common-rail non-intensified injector with an oil-intensified injector. The invention also uses fuel (common rail) pumps that are commercially available since the injector does not rely on this pump for intensification function. Also, since the pressure of the fuel pump is limited to lower than the intensified pressure, the injected pressure is limited to the unit injector; this eases the rail and tube requirements to this lower fuel rail pressure. The injector operates up to this limited pressure with no intensification. Also a separate oil system is configured to operate a hydraulic intensifier. Thus the system is able to achieve very high injection pressure without common rail pump, rail, fitting and jumper tube limits. The oil system does not need to operate or run unless these elevated pressures are required. Embodiments using direct needle control are disclosed.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: February 5, 2013
    Assignee: Sturman Industries, Inc.
    Inventors: Daniel Donald Giordano, Tibor Kiss, James A. Peña, John Mathew Quinlan
  • Patent number: 8342424
    Abstract: A needle is received in a nozzle body and is adapted to reciprocate relative to an injection hole to open and close the injection hole. A pressure chamber receives the fuel and exerts a pressure against the needle in an opening direction away from the injection hole upon increasing of the pressure of the fuel in the pressure chamber. A damper arrangement is actuated upon increasing of the pressure in the pressure chamber to alleviate a change in the pressure in the pressure chamber. A pressurizing piston reciprocates to increase and decrease the pressure of the fuel in the pressure chamber.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: January 1, 2013
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Takashi Suzuki, Kouichi Mochizuki
  • Patent number: 8342423
    Abstract: A fuel injection apparatus for an internal combustion engine includes a fuel supply passage and a valve arrangement for controlling fuel pressure within the fuel supply passage. The valve arrangement includes a valve member movable between an open position in which the fuel supply passage communicates with a low pressure fuel drain and a closed position in which communication between the fuel supply passage and the low pressure fuel drain is prevented. The valve arrangement comprises damping means for controlling and/or damping movement of the valve member between the closed and open positions.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: January 1, 2013
    Assignee: Delphi Technologies Holding S.arl
    Inventors: Stephen K. Bowers, Anthony T Harcombe
  • Publication number: 20120312892
    Abstract: An exhaust gas aftertreatment system and method are provided. The system comprises a controller, a pump, and a volume quantity dispensing unit. The volume quantity dispensing unit comprises a pressure transducer comprising an electric pressure sensor, at least one fine atomizing nozzle for apportioning the aqueous solution directly into an exhaust gas flow, and at least one means for changing a pressure value. The means changes the pressure value in such a way that a pressure output signal from the pressure transducer to the controller is modified from an actual pressure value sensed by the pressure sensor. A first signal provided by the controller to the pump and a second signal provided by the controller to the volume quantity dispensing unit are adapted based on the output signal from the pressure transducer and a further signal indicative of an operating state of the internal combustion engine.
    Type: Application
    Filed: August 17, 2012
    Publication date: December 13, 2012
    Inventors: Friedrich Zapf, Thorsten Pelz, Heico Stegmann
  • Patent number: 8282020
    Abstract: Three-way valves having reduced leakage and fuel injectors using the same. Three-way spool poppet valves are disclosed having a spool with a poppet valve thereon cooperating with a seat on the valve housing to provide a substantially leak free valve closing in one direction characteristic of a poppet valve while preserving the advantages of a spool valve. Three-way ball valves are also disclosed having substantially leak free valves closing in both directions, but further including reduced short circuit losses due to direct flow from a high pressure source to a low pressure vent during transition of the ball from one position to the opposite position. Fuel injectors with direct needle control using the three-way valves of the present invention are also disclosed.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: October 9, 2012
    Assignee: Sturman Industries, Inc.
    Inventors: Tibor Kiss, Randall James Strauss, James A. Pena, John Mathew Quinlan
  • Patent number: 8267333
    Abstract: A fuel injector and a method of assembly includes a determination of various flow areas through clearances or openings formed in various components of the injector. With the various flow areas determined, the various components can be classified according to their flow areas such that sets of components can be selected having desirable flow area characteristics for assembly of the fuel injector.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: September 18, 2012
    Assignee: Caterpillar Inc.
    Inventors: Stephen R. Lewis, Shriprasad Lakhapati, Christopher D. Hanson, Avinash Manubolu, Daniel R. Ibrahim
  • Patent number: 8245402
    Abstract: The method for manufacturing a solid housing, in particular a valve housing for an electromagnetically operable valve, is characterized in that the following method steps are used: a) providing a sheet metal strip made of a magnetic or magnetizable material, b) introducing an additive into a middle area of the sheet metal strip and fusing there for forming a non-magnetizable structure, c) cutting the sheet metal strip into a sheet metal piece of desired width, d) deforming the sheet metal piece into a sleeve shape, e) mutual fastening of the cut edges now facing each other and running in the longitudinal direction of the sleeve for forming a sleeve blank, f) final machining of the sleeve blank until a desired geometry of the housing is achieved. The housing is suitable in particular for use in fuel injectors in fuel injector systems of mixture-compressing spark-ignition internal combustion engines.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: August 21, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Max Seitter, Juergen Graner, Tilla Haubold, Stefan Oetinger