Drip Prevention Means At Injector Nozzle Patents (Class 123/467)
  • Patent number: 10344858
    Abstract: A park valve includes a slidable end-cap. Under normal circumstances, the end-cap is held in a nominal position by a spring, such as a Belleville spring. The park valve performs a multi-plexing function in which an out-of-park circuit is connected to line pressure when the valve is in an out-of-park position and is vented when the valve is in a park position. In an intermediate position, a hydraulic lock condition may potentially occur. When engaging park, the hydraulic lock condition is prevented by the slidable end-cap.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: July 9, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Scott Joseph Gittins, Matthew Scott Malnar, Allison Lynch, Lisa Waldock, Alexander Phillip McDonnell
  • Patent number: 10233885
    Abstract: The present disclosure relates to internal combustion engines. The teachings thereof may be embodied in injection valves with servo-valve control for injecting fuel into the combustion chamber. For example, an injection valve may include a valve pin connected to a valve body and an actuator preloaded by an actuator spring. The valve pin is fitted with a very small clearance to form a sealing gap between the valve pin and the valve body which includes bores. The lower end of the valve pin forms a coupling volume between the valve pin and the valve body, connected via the sealing gap and the bores to the valve chamber. The sealing gap provides a fluidic connection between the coupling volume and the valve chamber, but, during the short time of valve actuation, practically no exchange of fluid can take place between coupling volume and valve chamber so that the coupling volume does not substantially change in said short time.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: March 19, 2019
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Willibald Schuerz
  • Patent number: 10156216
    Abstract: An enclosure member includes a throughhole that penetrates a cover portion. The cover portion includes a blocking portion that receives an abutment by a wall portion to close an opening of an outflow passage with respect to spaces outside of the enclosure member. The blocking portion is provided so as to surround an opening of the throughhole, and the throughhole is in communication with the outflow passage even when the blocking portion is abutting the wall portion. Further, a spring is outside of a back pressure chamber to bias the enclosure member. The enclosure member itself blocks outside spaces from the back pressure chamber, so the expenditure of high pressure fuel may be controlled, and an injection hole may be opened and closed by a needle.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 18, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hiroki Tanada, Daiji Ueda
  • Patent number: 10100774
    Abstract: Methods and systems are provided for pressurizing a step chamber of a direct injection fuel pump. In one example, the step chamber may be pressurized to a pressure higher than an output pressure of a lift pump, the lift pump supplying fuel to the direct injection fuel pump. The pressurization of the step chamber may occur during at least a portion of a pump stroke of the direct injection fuel pump.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: October 16, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph F. Basmaji, Ross Dykstra Pursifull, Gopichandra Surnilla, Mark Meinhart, Hao Zhang
  • Patent number: 10094346
    Abstract: Fuel pump for a direct-injection system and having: a pumping chamber; a piston; an intake channel regulated by an intake valve; a delivery channel regulated by a delivery valve; and a drain channel that originates in the delivery channel and is regulated by a maximum-pressure valve having: a shutter, a valve body provided with a valve seat, a calibrated spring for pushing the shutter against the valve seat, and a plate that is arranged in contact with the shutter on the opposite side of the valve seat; the plate of the maximum-pressure valve has a first annular groove, which is arranged around the shutter; and the valve body of the maximum-pressure valve has a second annular groove, which is arranged around the shutter and at least partially faces the first annular groove of the plate.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: October 9, 2018
    Assignee: MAGNETI MARELLI S.p.A.
    Inventors: Daniele De Vita, Tommaso Neri
  • Patent number: 10006429
    Abstract: A fuel injector includes a housing defining a longitudinal bore having a proximal end and a distal end, a high pressure fuel duct in communication with the longitudinal bore and a valve seat including a valve seat surface and an aperture at the distal end of the longitudinal bore. A poppet valve is disposed in the longitudinal bore and includes a valve head that is engageable with the valve seat surface. An actuator device is disposed at the proximal end of the longitudinal bore and a hydraulic coupler is disposed between the actuator and the poppet valve within the longitudinal bore. The hydraulic coupler defines a chamber that receives low pressure fuel for providing a hydraulic lash adjuster between the actuator and the poppet valve.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: June 26, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Paul A. Battiston, Robert D. Straub
  • Patent number: 9995240
    Abstract: A method for regulating a common rail injector, the method including acquiring a signal of a sensor, which signal is proportional to a pressure in a valve space of the common rail injector; evaluating a change in the signal over time in order to detect at least one operating event of the common rail injector; and modifying at least one operating variable of the common rail injector as a function of the at least one operating event, the at least one operating variable being selected from an opening duration, a closing duration, an opening point in time, and a closing point in time of a switching valve of the common rail injector, and from an opening duration, an opening point in time, and a closing point in time of a needle valve of the common rail injector.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: June 12, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Ralph Kober, Holger Rapp, Fabian Fischer, Marco Beier, Stefan Stein
  • Patent number: 9976505
    Abstract: The present disclosure teaches a method for operating an injector with piezoelectric direct drive of an injection system of an internal combustion engine. The method may comprise providing a current to the piezoelectric actuator at a first level, then quickly reducing the current for charging the piezoelectric actuator before or after the opening of the nozzle needle and before the mechanical impacting of the needle or the hydraulic equilibrium point of the needle, the current reduced to such an extent that the sum of the forces acting on the nozzle needle become approximately zero in the case of a small needle lift (part lift), and after reducing the current, supplying a low current in a constant or ramp-shaped fashion until a predetermined setpoint energy is reached.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: May 22, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Hong Zhang
  • Patent number: 9909547
    Abstract: In a quantity limiting valve for a fuel injection system of an internal combustion engine including a cylinder with an inflow region and an outflow region separated by a piston axially movably disposed in the cylinder and a flow limiting fluid flow path extending along the piston between the inflow and outflow regions wherein the piston is biased with its front surface into contact with a stop element, the contact area between the front surface and the stop surface includes between the piston and the stop element a contact structure providing for an intermediate space which is in communication with the inflow region thereby to expose the front surface of the piston to the pressure of the fluid in the inflow region.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: March 6, 2018
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Robby Gerbeth, Michael Walder, Andreas Mehr, Markus Staudt, Frank Mlicki
  • Patent number: 9897060
    Abstract: Methods and systems are provided for an injector arrangement for an internal combustion engine. In one example, an injector arrangement may include an actuator positioned between a fuel injector and a cylinder head, with the actuator configured to adjust a position of the fuel injector relative to the cylinder head in order to adjust a protrusion amount of a fuel nozzle tip within a combustion chamber.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: February 20, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Frank Wunderlich, Joerg Kemmerling, Leonhard Bartsch, Juergen Karl Stief, Guohui Chen, Werner Willems
  • Patent number: 9810162
    Abstract: An actuating device (11) is provided for changeover valves (10) of an internal combustion engine having an adjustable compression ratio. Each changeover valve (10) is used to control a hydraulic oil flow in hydraulic chambers of an eccentric adjusting device of a respective connecting rod (1) of the internal combustion engine. Each changeover valve (10) has a pick-off element (12) that can be actuated by the actuating device (11). The actuating device (11) has a selector fork (13) for each changeover valve (10) and hence for each pick-off element (12) to be actuated. The selector forks are secured on a support structure (14) and can be moved from a first selection position into a second selection position against the restoring force of a return element (22), and wherein the restoring force of the return element (22) moves the selector forks (13) automatically in the direction of the first selection position.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: November 7, 2017
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventor: Michael Paul
  • Patent number: 9709011
    Abstract: A high-pressure-side valve portion makes contact with and moves from a high-pressure seat surface formed in a body to control communication between a control chamber communication passage and a high-pressure passage. A low-pressure-side valve portion makes contact with and moves from a low-pressure seat surface formed in the body to control communication between an exhaust passage and a second intermediate chamber. A releasing portion in the high-pressure-side valve portion communicates with the control chamber communication passage when the high-pressure seat surface is in contact with the high-pressure-side valve portion to block the control chamber communication passage from the high-pressure passage. A valve element internal passage is formed in the valve element to communicate the releasing portion with the second intermediate chamber.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: July 18, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiroki Tanada, Daiji Ueda, Motoya Kanbara
  • Patent number: 9695789
    Abstract: A valve cylinder partitions a first intermediate chamber from a second intermediate chamber. A first valve element in the first intermediate chamber includes a tubular high-pressure-side valve portion to control communication between a control chamber communication passage and the first intermediate chamber. A second valve element in the second intermediate chamber includes a low-pressure-side valve portion to control communication between an exhaust passage and the second intermediate chamber. A columnar rod portion located between the first valve element and the second valve element is slidably held at a cylinder hole of the valve cylinder. An internal passage communicates the control chamber communication passage with the second intermediate chamber. The high-pressure-side valve portion has an outer diameter greater than an outer diameter of the rod portion.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: July 4, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiroki Tanada, Daiji Ueda, Motoya Kanbara
  • Patent number: 9664165
    Abstract: A plug-in pump for a common-rail system has a pump housing having a cylinder formed therein and a piston guided in the cylinder, a fuel inlet, and a fuel outlet. The pump housing also includes a plug-in section for inserting the pump housing into an opening of an engine component, and a flange that delimits the plug-in section, for fastening the pump housing to the engine component. To cool the plug-in pump, the pump housing has at least one flow duct with a separate fluid inlet and a separate fluid outlet. The fluid inlet is connectable to a fluid-discharging line of the internal combustion engine, and the fluid outlet is connectable to a fluid-receiving line of the internal combustion engine.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: May 30, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Uwe Nigrin, Ngoc-Tam Vu, Andreas Ederer
  • Patent number: 9664167
    Abstract: A valve arrangement comprising: a valve outlet for communication with a low pressure drain; a valve housing provided with a bore for receiving fuel from an accumulator volume; and a valve member having a closed position in which it engages a valve seating defined by the bore to prevent fuel flow from the accumulator volume to the valve outlet. The valve arrangement further comprises a first restricted flow means for restricting the flow of fuel between the accumulator volume and the valve outlet during a first stage of valve opening movement; a second restricted flow means effective during a second stage of valve opening movement to provide a greater restriction than during the first stage; and a third restricted flow means effective during a third stage of valve opening movement to provide a variable restriction to fuel flow dependent on the extent of opening movement of the valve member.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: May 30, 2017
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Raphael Rouillon, Etienne Pereira, Guillaume Trenado, Jean-Luc Rouet
  • Patent number: 9599078
    Abstract: A fuel supply device includes a leaked fuel collection unit and a check valve. When fuel passes through a first seal member to leak out from a cam chamber into an inter-seal space, the leaked fuel collection unit sucks in this fuel to extract the fuel from the inter-seal space, then pressurizes and returns the fuel to a fuel tank. The check valve prevents the fuel from flowing in reverse from the fuel tank to the inter-seal space. Accordingly, regardless of the pressure in the fuel tank and the pressure in the inter-seal space, fuel that leaks into the inter-seal space may be actively returned to the fuel tank. Further, the check valve prevents pressure in the fuel tank from acting on seal members. Accordingly, fuel that leaks into the inter-seal space may be collected into the fuel tank.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: March 21, 2017
    Assignee: DENSO CORPORATION
    Inventor: Masaaki Kato
  • Patent number: 9556814
    Abstract: A method for controlling pressure in a high-pressure region of an internal combustion engine includes adjusting a fuel outflow from the high-pressure region into a low-pressure region by means of an injector, which has a control valve adjusted by a piezo actuator and a control chamber. The method includes charging the piezo actuator by a first signal such that the control valve is moved from a closed position to a partially open position and fuel flows out from the high-pressure region into the low-pressure region, discharging the piezo actuator by a second signal such that the control valve is moved into the closed position, and partially discharging the piezo actuator by a third signal after the first signal and before the second signal. The method provides pressure control in the high-pressure region via an injector with high reliability even at high rail pressure.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: January 31, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Janos Radeczky
  • Patent number: 9394849
    Abstract: An electronically controlled fuel injection valve can control the time to inject fuel and the amount of fuel to be injected in response to a control signal independently from the operating condition of an engine unlike a traditional mechanical fuel injection valve. The electronically controlled fuel injection valve 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, has a simple structure making it easy to assemble, replace and precisely machine parts, and has a simple flow path structure which facilitates fabrication.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: July 19, 2016
    Assignee: HYUNDAI HEAVY INDUSTRIES, CO., LTD.
    Inventors: Dong-Hun Kim, Seung-Hyup Ryu, Tae-Hyung Park
  • Patent number: 9328707
    Abstract: The invention relates to a control chamber, the pressure of which determines the strokes or positions of a nozzle needle, and which is assigned to a force or pressure sensor in order to detect the progression of the control chamber pressure. Because the control chamber pressure significantly changes during the closing of the nozzle needle, the operating phases of the injector can be exactly determined from the sensor data and supplied to an engine controller.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 3, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Nestor Rodriguez-Amaya, Siegfried Ruthardt, Holger Rapp, Wolfgang Stoecklein, Bernd Berghaenel, Marco Beier
  • Patent number: 9297344
    Abstract: A fuel injection valve for an internal combustion engine may include an injector body having a receiving hole for an injector needle. The receiving hole may be implemented as a blind hole and may form an injector ring chamber in the injector shaft and a cone-shaped valve seat at the base thereof, and a blind injector hole at the tip of the valve seat cone, from which at least one injector hole extends. The injector needle may include an at least partially cone-shaped needle tip and may seal off the blind injector hole, and thus the at least one injector hole, from the injector ring chamber. The needle tip may include a needle pilot adapted in contour and extent to the blind injector hole in the valve seat, the pilot protruding into the blind injector hole and thus reducing a compression volume formed between the valve seat and injector hole.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: March 29, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Wolfgang Gerber, Thomas Hofmann, Uwe Leuteritz
  • Patent number: 9279401
    Abstract: An injection device for injecting fuel, including a fuel supply path, through which fuel is able to be supplied, an injector having a spray orifice, from which the supplied fuel is ejected, a valve element, which is movable using an actuator, for opening the spray orifice and for closing it, and a throttle, which is situated in the fuel supply path, a distance of the throttle from the spray orifice along the fuel path having a length which is equivalent to the wavelength of a characteristic frequency of the injection device.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: March 8, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventor: Philipp Rogler
  • Patent number: 9279400
    Abstract: The invention relates to an injection device (1), designed in particular for injecting fluid into an exhaust tract of an internal combustion engine, having a valve needle (14), an injection chamber (12) having at least one injection opening (44), and a control chamber (20). The injection device (1) is designed such that a pressure differential between the injection chamber (12) and the control chamber (20) brings about a displacement of the valve needle (14) between an open position in which a fluid flow through the injection opening (44) from the injection chamber (12) is released, and a closed position, in which the injection opening (44) is closed off.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: March 8, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Jochen Doehring, Wolfgang Ripper, Juergen Hanneke, Godehard Nentwig
  • Patent number: 9243597
    Abstract: A fuel injection pump is provided which can be manufactured without an increase in the manufacturing cost and which is configured so that the sealing performance of an electromagnetic spill valve can be maintained with minimum maintenance cost.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: January 26, 2016
    Assignees: Yanmar Co., Ltd., Woodward, Inc.
    Inventors: Takanori Egashira, Kazutaka Sone, Shinya Umeda, Stefan Kiechle
  • Patent number: 9234487
    Abstract: An injection nozzle for injecting fuel into a combustion chamber of an internal combustion engine comprises a nozzle body having a bore for receiving fuel from a supply line for pressurized fuel, an outlet from the bore for delivering fuel to the combustion chamber, in use, and a valve needle defining a needle axis and being slidable within the bore. The needle comprises a needle guide portion arranged to guide the needle within the bore. The injection nozzle further comprises a restriction within the bore for restricting fuel flow through the bore, and a restrictive element moveable with the needle and located upstream of the needle guide portion. At least a part of a downstream side of the restrictive element comprises a bevelled surface that extends to a peripheral edge of the restrictive element, the bevelled surface being non-perpendicular to the needle axis.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: January 12, 2016
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventor: Michael Peter Cooke
  • Patent number: 9038601
    Abstract: A flow limiter for a fuel system is provided. The flow limiter includes a self-contained portion that enables testing of the flow limiter prior to assembly into a fuel system. A housing of the flow limiter is arranged to provide reduced or no pressure differential across a wall of the housing, permitting the housing to be reduced in size and thickness and providing improved consistency of operation.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: May 26, 2015
    Assignee: Cummins Inc.
    Inventors: Corydon E. Morris, David L. Buchanan
  • Patent number: 8997716
    Abstract: A nozzle injection apparatus for use in internal combustion engines includes a fuel pump for intermittently pressurizing fuel, an injection conduit in fluid communication with the fuel pump, the injection conduit permitting the pressurized fuel to be communicated to a fuel injection nozzle a control valve in fluid communication with the nozzle, wherein the control valve dynamically and selectively controls a pressure of said pressurized fuel within the injection conduit.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: April 7, 2015
    Assignee: Governors America Corp.
    Inventors: William Ferry, Martin G. Riccitelli, Richard Vanderpoel
  • Patent number: 8783229
    Abstract: A gaseous fuel internal combustion engine includes an engine housing defining at least one cylinder, and an intake housing defining an intake passage fluidly connecting with the at least one cylinder. The engine includes a gaseous fuel delivery mechanism coupled with the engine housing and a distributed ignition promoting mechanism having a bead presentation device extending into the intake passage and configured to present a liquid bead of distributed ignition promoting material therein such as engine lubricating oil. During operation, gases passing through the intake passage dislodge the liquid bead from the bead presentation device and carry the distributed ignition promoting material into the cylinder for distributively igniting therein a mixture containing a gaseous fuel, air and the distributed ignition promoting material.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: July 22, 2014
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark Sommars, Martin Willi, Scott Fiveland
  • 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: 8689772
    Abstract: A common rail fuel injector includes a fuel inlet, a set of nozzle outlets, a drain outlet, a nozzle chamber and a needle control chamber. A needle control valve includes a ceramic control valve member movable between a closed position in contact with a flat valve seat to block the needle control chamber from the drain outlet, and an open position at which the needle control chamber is fluidly connected to the drain outlet. A solenoid actuator is mounted in the injector body and includes an armature movable between an overtravel position and an energized position, but the armature has a stable un-energized position between the overtravel position and the energized position. A needle valve member is positioned in the injector body and includes an opening hydraulic surface exposed to fluid pressure in the nozzle chamber, and a closing hydraulic surface exposed to fluid pressure in the needle control chamber.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: April 8, 2014
    Assignee: Caterpillar Inc.
    Inventors: Gregory William Hefler, Adam Leonard Stecklein, Daniel Richard Ibrahim
  • Patent number: 8683978
    Abstract: A fuel injection system is described, and which has an upstream portion and a downstream portion. The upstream portion includes a source of fuel, the fuel inlet of a fuel injection servo or flow regulator, and a first fuel flow line connected in fuel flowing relation relative to the source of fuel and to the fuel inlet of the fuel injection servo. The downstream portion includes a flow divider, at least one fuel outlet of the fuel injection servo, and a second fuel flow line connected in fuel flowing relation relative to the flow divider and the fuel outlet of the fuel injection servo. A fuel accumulator pressure damper is mounted in fuel flowing relation relative to the downstream portion of the fuel injection system so as to substantially reduce standing waves in the fuel injection system.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: April 1, 2014
    Assignee: Turn and Bank Holdings, Inc.
    Inventor: Jim Gregoire
  • Patent number: 8678298
    Abstract: A method and system ensures that a certain amount of fuel is delivered by a fuel injector at each injection cycle over the life of the fuel injector. The injector has an armature that moves between open and close positions. A base time for the armature to move from the open position to the close position is established. A present time for the armature to move from the open position to the close position is compared to the base time. If the present time is greater than the base time by a predetermined amount, then 1) a present injector duration time is set to be greater than an original injector duration time to ensure that the certain amount of fuel is delivered by the fuel injector, or 2) a change in service condition is indicated for the fuel injector.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: March 25, 2014
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Anup Vijaykumar Gongle
  • Patent number: 8640675
    Abstract: A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis for controlling opening/closing of a nozzle that injects fuel in an engine cylinder; the injector body houses a metering servovalve, provided with a control chamber and with an open/close element of a balanced type, axial sliding of which causes a variation in pressure in the control chamber; the metering servovalve comprises a valve body made of two pieces coaxially coupled to one another via a deformable ring, which defines also a gasket for guaranteeing fluid tightness between the two pieces and maintains in a fixed position a disk on which a calibrated restriction is made.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: February 4, 2014
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Raffaele Ricco, Sergio Stucchi, Onofrio De Michele
  • Patent number: 8622046
    Abstract: A fuel system for an engine is disclosed. The fuel system may have a pump, a plurality of fuel injectors, and a plurality of fuel accumulators. Each of the plurality of fuel accumulators may be disposed at least partially within a different cylinder head of the engine in fluid communication with an associated fuel injector of the plurality of fuel injectors. Each of the plurality of fuel accumulators may also be in fluid communication with adjacent fuel accumulators of the plurality of fuel accumulators. At least one of the plurality of fuel accumulators may also be in fluid communication with the pump. The fuel system may further have a plurality of flow limiters. Each of the plurality of flow limiters may be disposed between an associated fuel accumulator of the plurality of fuel accumulators and an associated fuel injector of the plurality of fuel injectors.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: January 7, 2014
    Assignee: Caterpillar Inc.
    Inventors: Michael D. Gerstner, Kenneth C. Adams, Benjamin R. Tower, Bharath Chandrashekar, Zhenyu Li
  • 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: 8573186
    Abstract: The invention relates to an injector for injecting fuel into combustion chambers of internal combustion engines. According to the invention, a valve seat of a control valve is designed as a flat seat that has a planar valve seat surface. A circumferential edge located on the face of a sleeve of the control valve rests on the planar valve seat surface when the control valve is closed.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: November 5, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Rettich, Friedrich Boecking
  • 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: 8516994
    Abstract: A fuel injection system is described, and which has an upstream portion and a downstream portion. The upstream portion includes a source of fuel, the fuel inlet of a fuel injection servo or flow regulator, and a first fuel flow line connected in fuel flowing relation relative to the source of fuel and to the fuel inlet of the fuel injection servo. The downstream portion includes a flow divider, at least one fuel outlet of the fuel injection servo, and a second fuel flow line connected in fuel flowing relation relative to the flow divider and the fuel outlet of the fuel injection servo. A fuel accumulator pressure damper is mounted in fuel flowing relation relative to the downstream portion of the fuel injection system so as to substantially reduce standing waves in the fuel injection system.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: August 27, 2013
    Assignee: Turn and Bank Holdings, Inc.
    Inventor: Jim Gregoire
  • Patent number: 8511284
    Abstract: A fuel supply apparatus of an internal combustion engine is provided which can discharge air bubbles or air from within fuel supply paths while increasing pressure within a common rail up to a predetermined pressure level before a start of the internal combustion engine, can reduce a period of time of cranking from when an ignition switch is switched on and which can reduce noise that occurs when the air bubbles or air are being discharged. The fuel supply apparatus is provided with a flow rate control valve that adjusts a flow rate of fuel supplied to the common rail and a pressure control valve that reduces the pressure within the common rail.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: August 20, 2013
    Assignee: Bosch Corporation
    Inventors: Hiroshi Matsuki, Hirotaka Kaneko, Muneyuki Yoshida
  • Patent number: 8504277
    Abstract: In a method for determining a control parameter for a fuel injector of an internal combustion engine, the problem of enabling more precise determination of the control parameter, even if the fuel pressure (FUP) present on the fuel injector varies, is solved in that the fuel pressure (FUP) present on the fuel injector during the injection (I1, I2, I1?, I1?) is concluded while allowing for the time of the fuel pressure value detection and/or the crankshaft angle position of the internal combustion engine during the detection of the fuel pressure value, and that the control parameter is determined based on the fuel pressure (FUP) that was concluded.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: August 6, 2013
    Assignee: Continental Automotive GmbH
    Inventors: Dirk Baranowski, Klaus Hengl-Betz, Thorsten Lauer
  • Patent number: 8460422
    Abstract: An exhaust aftertreatment system includes a combustion head housing defining a plenum, and an air supply system including an air conduit fluidly connected with the plenum. The aftertreatment system further includes a fuel system having a fuel supply housing defining a fuel passage, a control valve positioned within the fuel passage and a fuel filtering mechanism having a filtering component positioned within the fuel passage fluidly between a fuel inlet and the control valve. A nozzle is mounted within the combustion head housing and defines a nozzle outlet, and a fuel conduit extends between the fuel supply housing and the combustion head housing. The control valve includes an open state in which the fuel system defines an unobstructed fuel flow path from the fuel inlet to the nozzle outlet.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: June 11, 2013
    Assignee: Caterpillar Inc.
    Inventor: Thomas R. McClure
  • Patent number: 8459232
    Abstract: An injection system for injecting fuel has an actuator, a pilot valve with a valve mushroom, and a supply throttle. The control chamber encompasses a control piston, a first discharge throttle, a first sealing edge for forming a first sealing seat along with the valve mushroom, a second sealing edge of a piston chamber with a valve piston, the second sealing edge forming a second sealing seat along with the valve piston during a maximum actuator working lift for sealing the piston chamber and the valve chamber from each other; and a second discharge throttle connecting the piston chamber to the low-pressure zone between the first and the second sealing edge, wherein d1>d2>d3, d1 are the minimum diameter of the first discharge throttle, d2 being the minimum diameter of the second discharge throttle, and d3 being the minimum diameter of the supply throttle.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: June 11, 2013
    Assignee: Continental Automotive GmbH
    Inventors: Fredrik Borchsenius, Uwe Jung, Grit Kr├╝ger, Eberhard Kull, Volker Mohr
  • Publication number: 20130104853
    Abstract: A flow limiter for a fuel system is provided. The flow limiter includes a self-contained portion that enables testing of the flow limiter prior to assembly into a fuel system. A housing of the flow limiter is arranged to provide reduced or no pressure differential across a wall of the housing, permitting the housing to be reduced in size and thickness and providing improved consistency of operation.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 2, 2013
    Applicant: CUMMINS INC.
    Inventor: Cummins INC.
  • Patent number: 8402947
    Abstract: A fuel rail includes an elongated tube having an inlet and a plurality of outlets. The elongated tube defines a fuel passageway for directing fuel toward the plurality of outlets. The fuel rail also includes a plurality of immovable baffles positioned within the elongated tube to divide the fuel passageway into a plurality of chambers such that each outlet is positioned in one of the plurality of chambers. The plurality of baffles restricts fluid flow between adjacent chambers. A majority of the plurality of outlets are located essentially at an acoustic node of each corresponding chamber to reduce noise generated by the fuel rail.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 26, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Venkatesh Kannan, Jason Schwanke, Chad D. Ormsbee, John P. Casari
  • 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: 8297254
    Abstract: A system for safe storage and efficient utilization of a variety of fuel selections that range in composition and phase from cryogenic mixtures of solids and liquids to elevated temperature gases is provided for unique applications with various types of heat engines and fuel cells including hybridized combinations.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: October 30, 2012
    Assignee: McAlister Technologies, LLC
    Inventor: Roy McAlister
  • Patent number: 8251047
    Abstract: A fuel rail includes an elongated tube having an inlet and a plurality of outlets. The elongated tube defines a fuel passageway for directing fuel toward the plurality of outlets. The fuel rail also includes a plurality of baffles positioned within the elongated tube to divide the fuel passageway into a plurality of chambers such that each outlet is positioned in one of the plurality of chambers. The plurality of baffles restricts fluid flow between adjacent chambers. A majority of the plurality of outlets are located essentially at an acoustic node of each corresponding chamber to reduce noise generated by the fuel rail.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: August 28, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Venkatesh Kannan, Jason Schwanke, Chad D. Ormsbee, John P. Casari
  • Patent number: 8215100
    Abstract: An exhaust treatment device for a combustion system is disclosed. The exhaust treatment device may have a housing, and an injector disposed within the housing to deliver an injection fluid into a flow of exhaust. The exhaust treatment device may also have at least one fluid supply passage that is disposed within the housing and being in fluid communication with the injector to supply the injector with injection fluid. The exhaust treatment device may further have at least one purge passage disposed within the housing and in fluid communication with the injector to supply the injector with a purge fluid. The exhaust treatment device may additionally have a first valve element that is mounted to the housing and disposed at an entrance of the at least one purge passage The first valve element may be configured to provide a unidirectional flow of purge fluid to the at least one purge passage.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: July 10, 2012
    Assignee: Caterpillar Inc.
    Inventors: Robert L. Miller, Stephen M. Wiley, Glenn B. Cox, Thomas Randall McClure
  • Patent number: 8196565
    Abstract: A fluid injector assembly has a fluid injector (14) with a fluid inlet portion (16), a fluid injector cup (18) with an inner surface (30), an outer surface (28) and a heating device (32). The fluid inlet portion (16) of the fluid injector (14) has a sealing ring (26) being arranged and designed to sealingly engage the inner surface (30) of the fluid injector cup (18). The fluid injector cup (18) is designed to couple the heating device (32) thermally to the sealing ring (26) of the inlet portion (16) and to couple the fluid inlet portion (16) mechanically.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: June 12, 2012
    Assignee: Continental Automotive GmbH
    Inventors: Edoardo Giorgetti, Daniel Marc
  • Patent number: 8196567
    Abstract: Fuel is evacuated from a fuel rail by directing liquid fuel from the fuel rail to a fuel tank and then by directing gaseous fuel from the fuel rail to a fuel vapor canister.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: June 12, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey