Spring Type Or Biased Regulator* Patents (Class 239/533.9)
  • Patent number: 10155233
    Abstract: A splash plate assembly is retained in a rotary bell cup by a barbed skirt that interfaces with an inner surface of the bell cup. The splash plate assembly includes a splash plate or deflector that is secured to the front side of an insert. The insert has barbed extensions that may form a skirt around an outer periphery thereof. The insert is snapped into the front bell opening of a bell cup, and the barbed extensions elastically deform and snap back outwardly to interface with a shoulder formed in the bell cup inner surface.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: December 18, 2018
    Assignee: CARLISLE FLUID TECHNOLOGIES, INC.
    Inventors: David M. Seitz, Joe Louis Bates, Kurt Granville Miller
  • Patent number: 9964088
    Abstract: Methods and systems are provided for direct fuel injection. In one example, a fuel injector system includes an injector needle with an injector pin with a curved fuel channel around the outer circumference of the injector pin, fluidically connected along the length of the curved fuel channel with a fuel reservoir inside the injector pin. An actuator coupled to the injector needle may sequentially move and position the injector needle to establish fluidic connection between the curved fuel channel and with one or more nozzle holes of the fuel injector at each position, discharging fuel from only those nozzle holes, thereby minimizing fuel spray interaction.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: May 8, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 9470197
    Abstract: A nozzle for a fuel injector is disclosed. The nozzle may have an internal axial nozzle bore. The nozzle may also have at least one orifice passing from the nozzle bore radially outward through a wall of the nozzle at a tip end. Further, the nozzle may have a sac volume formed in the tip end and defined by a bore radius and a tip radius. The bore radius may be generally perpendicular to the central bore. The tip radius may be generally parallel to the central bore. The tip radius may be less than the bore radius.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 18, 2016
    Assignee: Caterpillar Inc.
    Inventors: Bryan D. Moore, Sana Mahmood, Daniel R. Ibrahim
  • Patent number: 9429122
    Abstract: In a fuel injection device having a sensor for detecting a state in the combustion chamber in a free end thereof, the sensor signal transmitting member for transmitting the sensor signal is protected from vibrations and moisture. The fuel injection device comprises: a valve body (33) having a free end exposed to the combustion chamber (7) defined in the engine main body (3) and a base end located outside of the engine main body; a sensor (38) supported at the free end of the valve body to detect a state of the combustion chamber; a sensor signal transmitting member (91) extending from the sensor to the base end of the valve body along an exterior of the valve body to transmit a signal from the sensor; and a second resin portion (40) and/or a bonding agent (100) covering the sensor signal transmitting member and securing the sensor signal transmitting member onto an exterior of the valve body.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: August 30, 2016
    Assignees: Honda Motor Co., Ltd., Hitachi Automotive Systems, LTD.
    Inventors: Shusuke Akazaki, Masahiro Soma, Atsushi Takaoku
  • Patent number: 9206779
    Abstract: The invention relates to an injection device, in particular for injecting fluid into an exhaust tract of an internal combustion engine, having a valve unit which comprises a valve needle, an injection chamber having at least one injection opening, and a control chamber, wherein the injection device is designed so that a pressure differential between the injection chamber and the control chamber brings about a displacement of the valve needle between an open position in which the valve needle releases a fluid flow through the injection opening, and a closed position in which the valve needle closes off the injection opening. The injection device also has a pump unit integrated in the injection device. The pump unit is designed so as to draw in fluid from the fluid inlet during operation and to provide said fluid to the valve unit under increased pressure.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: December 8, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Nestor Rodriguez-Amaya, Jochen Doehring, Juergen Hanneke, Godehard Nentwig
  • Patent number: 9080539
    Abstract: In an electromagnetic fuel injection valve which is configured to absorb an unbalanced load applied to sliding portions between a fixed core and a valve stem, thereby enabling a reduction in a frictional resistance of the sliding portions, a guide bush is press fitted in an inner peripheral surface of the fixed core, the valve element includes a valve part configured to cooperate with the valve seat, and the valve stem continuously provided to the valve part and extending toward the guide bush, a sliding member configured to be slidably fitted to an inner peripheral surface of the guide bush is press fitted on the valve stem, wherein an annular gap is provided at least at one of a location between the fixed core and the guide bush and a location between the valve stem and the sliding member, within sliding regions of the guide bush and the sliding member.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: July 14, 2015
    Assignee: Keihin Corporation
    Inventors: Junya Suzaka, Keisuke Machida, Daisuke Kondo, Ryosuke Takenaka
  • Patent number: 9038930
    Abstract: In a fuel injection device, a pressing surface of a pressing member presses an opening wall surface to interrupt communication between an inflow port and a pressure control chamber when communication between an outflow port and a return channel is made by a pressure control valve, and the pressing surface of the pressing member is displaced and separated from the opening wall surface to open the inflow port of the opening wall surface to the pressure control chamber when the communication between the outflow port and the return channel is interrupted by the pressure control valve. One of the pressing surface of the pressing member and the opening wall surface of the control body is provided with an inflow depressed portion and an outflow depressed portion partitioned from each other, and a depressed dimension of the inflow depressed portion is larger than a depressed dimension of the outflow depressed portion.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: May 26, 2015
    Assignee: DENSO CORPORATION
    Inventors: Yukihiro Fukuta, Tsukasa Yamashita
  • Patent number: 9016603
    Abstract: A common rail fuel injector includes a control valve member unattached to, but trapped between, a push pin and a seat of an injector body. The push pin has a head that includes a contact surface and a crown that includes a stop surface. An air gap surface of an armature is located between a top of the head and the stop surface of the crown when the contact surface of the push pin is in contact with the armature. The stop surface of the crown is located between an air gap plane of a stator assembly and the air gap surface of the armature. The push pin, the armature and the control valve member are movable among a rest configuration, an injection configuration, and an over travel configuration.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 28, 2015
    Assignee: Caterpillar Inc.
    Inventor: Richard Holtman
  • Patent number: 8991783
    Abstract: In a fuel injection valve, it is intended to enhance valve-closing responsivity while maintaining durability (anti wear property) of a collision portion between a stationary core and a movable core and valve-opening responsivity. An annular end face 106A of the movable core 106 in the fuel injection valve is provided with a collision portion 106C that collides to a stationary core 107 when the movable core is magnetically attracted toward the stationary core side and a non-collision portion that keeps a fluid gap between both cores at an area of an outer side or an inner side from the collision portion. The annular end faces of the stationary core and the movable core are coated with platings 30, 31 having anti wear property, and at least one of the platings of the stationary core and the movable core is formed in such a manner that the thickness thereof at the collision portion 106C is to be thicker and the thickness thereof at the non-collision portion is to be thinner.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: March 31, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Motoyuki Abe, Masahiko Hayatani, Tohru Ishikawa, Takehiko Kowatari, Atsushi Takaoku, Yasuo Namaizawa, Yusuke Irino
  • Patent number: 8967500
    Abstract: An injection hole inlet is disposed at the upstream side face of the injection hole plate in such a way that, assuming that ? denotes the angle between respective lines obtained by vertically projecting a straight line that passes through the center of the injection hole inlet and the center of the valve seat and the major axis of the injection hole inlet onto a perpendicular plane that passes through the center of the injection hole inlet and is perpendicular to the center axis of the valve seat and assuming that ? denotes the angle between respective lines obtained by vertically projecting the straight line that passes through the center of the injection hole inlet and the center of the valve seat and the minor axis of the injection hole inlet onto the perpendicular plane, ?<? is satisfied.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoya Hashii, Tsuyoshi Munezane
  • Patent number: 8967502
    Abstract: A dual fuel injector may be used to injector both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: March 3, 2015
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark F. Sommars, Xiangdong Ding
  • Patent number: 8905334
    Abstract: A stroke translator or an injector having a solid-state actuator for generating a stroke and a hydraulic system for the hydraulic transmission of the stroke of the solid-state actuator to a control element such as a jet needle of a valve. The hydraulic system has hydraulic volumes hermetically sealed to the outside by metal bellows and constitute a hydraulic bearing with compensation for play. The advantages over known hydraulic levers are such that a complete metal seal is provided, and that a lower-wear design can be realized. Furthermore, a modular structure can be produced.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: December 9, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Georg Bachmaier, Gerit Ebelsberger, Bernhard Fischer, Matthias Gerlich, Michael Höge, Wolfgang Zöls
  • 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: 8840048
    Abstract: An injection valve for injecting fluid has a housing with an injection valve cavity. The injection valve has a needle being axially moveable within the cavity. The needle has a needle body with a valve needle cavity and a separation element being fixedly arranged within the needle cavity and being adopted to divide the valve needle cavity into a first and second fluid volume. The separation element has at least one fluid passage with a predetermined passage opening to hydraulically connect the first fluid volume with the second fluid volume. The valve needle has a sealing element being arranged to predetermine the first fluid volume and preventing a fluid injection in a closing position and permitting the fluid injection in further positions. In addition, the valve needle has at least one spring element being preloaded and acting on the sealing element towards a maximum axial expansion of the valve needle.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: September 23, 2014
    Assignee: Continental Automotive GmbH
    Inventors: Antonio Agresta, Gianbattista Fischetti, Luigi Gargiulo, Marco Mechi
  • Patent number: 8752774
    Abstract: A tubular outer needle, slidably housed in a body, can communicate nozzle and suck chambers R1, R2 with each other and shut them from each other, and defines nozzle and suck chambers R1, R3. A rod-like inner needle, coaxially slidably housed in the outer needle, has a tip end portion movable into the suck chamber R2 at its lowermost position. In the range of small inner lift amount, an annular clearance is formed between an inner peripheral surface of an inner side wall defines the suck chamber R2 and an outer peripheral surface of an outer side wall of the needle tip end portion. Outer and inner lift amounts are regulated such that when fuel injection is started, the outer and inner lift amounts simultaneously increase from zero while when fuel injection is terminated, the inner lift amount returns to zero after the outer lift amount returns zero.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 17, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yuki Haba
  • Patent number: 8720802
    Abstract: The invention relates to a fuel injection valve for internal combustion engines having a valve body in which a blind hole is formed, with at least one injection opening proceeding from said blind hole. A longitudinally displaceable needle in the valve body has a valve sealing face formed at its end which faces towards the blind hole. The valve sealing face is formed from one or more conical faces, and the valve needle interacting, by means of a body seat, with said valve sealing face to control a fuel flow to the at least one injection opening. A needle tip adjoining the valve sealing face dips into the blind hole when the valve needle bears against the body seat, the needle tip being curved in a concave fashion directly adjacent to the valve sealing face.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: May 13, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Kerst, Gerhard Suenderhauf, Roland Schulz
  • 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: 8695899
    Abstract: A fuel injector has a housing with a central longitudinal axis having a first cavity and may be coupled to a fuel rail having a fluid inlet portion and outlet portion. The fuel injector has a valve needle arranged at least partly within the housing axially movable in the first cavity facing the fluid outlet portion, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing it through the fluid outlet portion in further positions. The fuel injector has a spring arranged within the first cavity for exerting a spring force on the valve needle along the central longitudinal axis for preventing the fluid flow through the fluid outlet portion. Additionally, the fuel injector has an adjusting element for adjusting an axial position regarding the central longitudinal axis of a spring rest depending on a pressure acting on the adjusting element.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: April 15, 2014
    Assignee: Continental Automotive GmbH
    Inventor: Marco Maragliulo
  • Patent number: 8662420
    Abstract: A fluid injector has a housing, an actuator unit and a valve body. The valve body has a needle (22) and a cartridge (21) with a recess, which takes in the needle (22) and which has on one of its ends a seat plate (213), that has a needle seat (2132) for the inward-opening needle (22), with the needle (22) further having a seat part (221) with a sealing area (222), that is destined to rest on the needle seat (2132) if it is pushed against the needle seat (2132), with the seat part (221) having a cavity radially inwards and in proximity to the sealing area (222).
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: March 4, 2014
    Assignee: Continental Automotive Italy S.p.A.
    Inventor: Alessandro Facchin
  • Patent number: 8646704
    Abstract: An injector includes a housing, a fixed core, a movable core, a valve member, and a resilient member pressing the valve member toward a nozzle hole. An inner peripheral surface of the housing axially guides an outer peripheral surface of the movable core. The inner peripheral surface and the outer peripheral surface define an outer clearance therebetween. The valve member includes a shaft-shaped portion and a stopper portion, which contacts the movable core and has a stopper inclined surface. An outer peripheral surface of the shaft-shaped portion and an inner peripheral surface of an insertion hole of the movable core define an inner clearance therebetween. The stopper inclined surface inclines radially inward of the shaft-shaped portion axially toward the nozzle hole. An axial clearance is formed between the stopper inclined surface and the movable core radially outward of a contact portion between the stopper inclined surface and the movable core.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: February 11, 2014
    Assignee: Denso Corporation
    Inventors: Kazuo Yamamoto, Jun Yamashita
  • Patent number: 8628031
    Abstract: Method and apparatus for controlling needle seat load in very high pressure diesel injectors. In accordance with the method, a needle control piston responsive to hydraulic forces for controllably forcing the injector needle against the needle seat is provided, as is a stop for the needle control piston to limit the needle control piston movement toward the needle seat. This provides a stop for the needle control piston, so that the compressive deflection between the needle control piston and the needle seat limits the force of the injector needle on the needle seat against increasing hydraulic forces on the needle control piston once the needle control piston reaches the needle control piston seat.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: January 14, 2014
    Assignee: Sturman Industries, Inc.
    Inventor: Tibor Kiss
  • Patent number: 8602328
    Abstract: The invention has an object for improving response of a fuel injection device. A flow-in recessed portion and a flow-out recessed portion are formed at a press-contacting surface of a floating plate, which is movably accommodated in a pressure control chamber. A flow-in port and a flow-out port are formed at a pressure control surface of a valve body. The flow-in port is opened to the flow-in recessed portion, while the flow-out port is opened to the flow-out recessed portion. When the floating plate is moved upwardly and the press-contacting surface is brought into contact with the pressure control surface, the flow-in port is surely closed.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: December 10, 2013
    Assignee: Denso Corporation
    Inventors: Naofumi Adachi, Shuichi Matsumoto, Keisuke Suzuki, Tomoyuki Tsuda, Yoichi Kobane, Yoshinori Okuno
  • Patent number: 8602319
    Abstract: A fuel injector includes an injector body with a tip component that defines at least one nozzle outlet. A needle valve member is positioned in the injector body and includes a frustoconical segment positioned in a frustoconical bore to separate a needle control chamber from a nozzle chamber. The needle valve member 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. The frustoconical bore and the frustoconical segment have a narrowing taper in the direction of an injector tip. The frustoconical features tend to slow the initial opening of the nozzle outlets, and hasten their closure relative to a counterpart injector with cylindrical needle guide features.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: December 10, 2013
    Assignee: Caterpillar Inc.
    Inventor: Jeffrey De Payva
  • Patent number: 8584965
    Abstract: The invention relates to a device for introducing (1) a carrier gas (2) and liquid compounds (3) or a liquid solution into an evaporation chamber (4), comprising a mixing chamber (10), including at least: —a first inlet (8) for the admission of said compounds or said solution (3), —a second inlet (9) for the admission of the carrier gas (2), —and an outlet (13) connected to an inlet of an injector (14), so that a mixture of carrier gas and droplets of said compounds or of said solution is periodically injected, through a single injector outlet (14), into the evaporation chamber (4).
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: November 19, 2013
    Assignee: Kemstream
    Inventors: Hervé Guillon, Samuel Bonnafous, Jean Manuel Decams, Frédéric Poignant
  • Patent number: 8579253
    Abstract: A fuel injector valve (1) of a piston engine, which comprises a fuel chamber (3) for the fuel to be injected, a valve needle (9) for guiding the fuel injection from the fuel chamber (3) into the cylinder (4) of the engine, a spring (10) for pressing the valve needle (9) towards the closed position, and a piezoelectric actuator (11) for guiding the valve needle (9). Additionally, the injector valve (1) comprises a drawbar (22), which is loosely coupled to the valve needle (9), a second drawbar (23), which is attached to the piezoelectric actuator (11) and loosely coupled to the drawbar (22), and that the injector valve (1) comprises a second spring (24) fitted in connection with the drawbar (22) for pressing the valve needle (9) towards the closed position and a third spring (25) fitted in connection with the second drawbar (23) for pressing the valve needle (9) towards the closed position.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 12, 2013
    Assignee: Wartsila Finland Oy
    Inventors: Wiliam Brace, Pekka Hautala, Jukka Kiijarvi, Markus Niemi
  • Patent number: 8573513
    Abstract: An inlet check valve assembly with flame arresting feature. An internal flame arresting feature utilizes a flame arrester body attached to a valve member which protrudes into the valve throat. An external flame arresting feature utilizes a hood concentrically disposed relative to the valve member. The flame arresting feature is configured relative to movement of the valve member with respect to the throat such that fluidic communication between the fuel fill pipe and the fuel tank is limited to less than the minimum flame propagation distance of the fuel and air mixture in which a combustible mixture may exist in the fuel fill pipe, whereby any flame front in the fuel fill pipe will quench thereat before reaching the fuel tank.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: November 5, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Vincent J. Marsala, Scott W. Jorgensen, Robert Halsall
  • Publication number: 20130200174
    Abstract: The present invention relates to a two-stage fuel injection valve. The two-stage fuel injection valve of the present invention is configured such that the pressure of main fuel delivered from an injection pump is applied to a plunger in a main fuel chamber, and subsequently delivered to an ancillary fuel pressure chamber via the plunger so as to compress ancillary fuel, such that a needle is retracted in a manner similar to those of slide valves by means of the pressure of the ancillary fuel so as to open an ancillary fuel nozzle hole and inject the ancillary fuel, and a main fuel nozzle hole is opened after the injection of the ancillary fuel so as to inject the main fuel, thereby conducting two-stage fuel injection.
    Type: Application
    Filed: August 11, 2011
    Publication date: August 8, 2013
    Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventors: Byung Hyun Jeon, Ju Tae Kim, Kwang Hean An, Seung Jin Kim
  • Patent number: 8496192
    Abstract: A fuel injector provided with: an injection valve comprising an injection nozzle; a mobile needle for regulating the fuel flow through the injection valve and ending with a shutting head, which engages a valve seat of the injection valve, is arranged externally with respect to injection valve and presents a predetermined sealing diameter; an actuator for displacing the needle between a closing position and an opening position of the injection valve; a closing spring which tends to maintain the needle in the closing position of the injection valve pushing the shutting head against the valve seat itself in a sense contrary to the feeding sense of the fuel; and a supporting body having a tubular shape and presenting a feeding channel within which a needle is arranged; the needle, at an opposite end of the shutting head, is coupled to a balancing channel, which is at ambient pressure.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: July 30, 2013
    Assignee: Magneti Marelli Powertrain, S.p.A.
    Inventors: Luca Mancini, Michele Petrone, Marcello Cristiani
  • Publication number: 20130126641
    Abstract: A machined spring for injector applications includes opposed first and second spring bases separated apart along a longitudinal axis. A spring body connects the first and second spring bases. The spring body includes a generally annular wall with a plurality of spring channels defined therethrough, such as machined channels. Exemplary applications for such machined springs include liquid strainers, valve components, and structural components for accommodating thermal expansion in injectors.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 23, 2013
    Applicant: Delavan Inc
    Inventors: Brett A. Pfeffer, Mark A. Caples
  • Publication number: 20130119162
    Abstract: A fuel injector that includes an injector control valve assembly. The injector control valve assembly includes a contact spring positioned between a fuel injector upper body and the injector control valve assembly to isolate a stator housing from clamping forces that occur during fuel injector assembly and clamping in an internal combustion engine. The injector control valve assembly further includes a cartridge configuration that permits preassembly of the injector control valve assembly prior to mounting in the fuel injector.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 16, 2013
    Applicant: CUMMINS INC.
    Inventor: Cummins Inc.
  • 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: 8371515
    Abstract: An injector used for an internal combustion engine includes a valve needle which closes a fuel passage by contacting a valve seat and opens the fuel passage by separating from the valve seat. A coil and a magnetic core are provided to drive the valve needle, and an anchor is held in a relatively displaceable state with respect to the valve needle. A first biasing device biases the valve needle in a direction opposite to a direction of a drive force, and a second biasing device biases the anchor in the direction of the drive force with a set load smaller than that of the first biasing device. A restricting feature restricts relative displacement of the anchor with respect to the valve needle in the direction of the drive force.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: February 12, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Motoyuki Abe, Masahiko Hayatani, Atsushi Sekine, Yasuo Namaizawa, Tohru Ishikawa, Noriyuki Maekawa
  • Patent number: 8371516
    Abstract: In a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, an injection valve member for opening and closing at least one injection opening is triggered by a control valve embodied as a magnet valve. On the armature of the magnet valve, a sealing face is embodied that for closing the control valve is positionable into a valve seat. The armature of the magnet valve is movable, without armature guidance, between an upper and a lower stroke stop. Because the sealing face, which for closing the control valve is positionable into the valve seat, is embodied on the armature, an additional closing element of the kind provided in the prior art can be dispensed with.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: February 12, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Nadja Eisenmenger
  • 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: 8292199
    Abstract: A locking element for a dispenser for discharging a medium, with an insert body, which has an outlet channel and an exit opening for the medium to be discharged, and a piston element which has a piston head co-operating with a piston seat and at least one elastic resilient leg, characterized in that a sealing element is arranged in the outlet channel, which forms the piston seat, and the piston element with the at least one resilient leg is arranged in an enlarging channel portion of the outlet channel, wherein the piston head is pre-tensioned against the piston seat and is pushed out of the piston seat by the exiting medium.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: October 23, 2012
    Assignee: Lindal Ventil GmbH
    Inventors: Michael Horn, Rudiger Belau
  • Patent number: 8286896
    Abstract: A fuel injector is provided with a fuel inlet, a fuel outlet, and a fuel passage for communicating fuel from the inlet to the outlet. A valve and valve seat assembly is provided for selectively preventing and permitting fuel to pass from the fuel inlet to the fuel outlet. The valve seat is defined by a tubular body and a valve seat that traverses an inside wall surface of the tubular body. An upstream face of the valve seat is downstream of an upstream end of the tubular body and a downstream face of the valve seat is upstream of a downstream end of the tubular body. At least one passage is provided through the tubular body beginning downstream of the downstream face of the valve seat and upstream of the downstream end of the tubular body. A cover may be disposed at the downstream end of the tubular body.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: October 16, 2012
    Assignee: Delphi Technologies, Inc.
    Inventors: Mahoro M. Fujita, Allan Richard Wells
  • 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: 8226018
    Abstract: The invention relates to a fuel injector with an injector housing which has a high-pressure fuel connection which is connected to a central high-pressure fuel source outside the injector housing, and with a pressure chamber within the injector housing. According to the pressure in a coupling chamber, fuel under a high pressure is injected from the pressure chamber into a combustion chamber of an internal combustion engine when a nozzle valve opens. The nozzle valve has a combustion chamber-remote end with a control pressure surface which is acted upon in the coupling chamber by the coupling chamber pressure. In order to create a fuel injector which can be produced inexpensively, the nozzle valve has at least one low-pressure surface which is averted from the combustion chamber and acted upon with low pressure.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: July 24, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Hans-Christoph Magel
  • Publication number: 20120180754
    Abstract: Disclosed is an electromagnetic fuel injection valve capable of reducing dynamic flow variation relative to the pulse widths of individual units in a lower pulse region than under idling conditions under which the dynamic flow is adjusted. Also disclosed is an internal combustion engine control device that utilizes the electromagnetic fuel injection valve. The electromagnetic fuel injection valve includes a fixed core, a coil disposed at the periphery of the fixed core, an anchor facing the lower end of the fixed core, a movable element with a valve seat formed on its lower end, and a regulator press-fit into a through-hole in the fixed core, the fixed core being a central shaft of the electromagnetic fuel injection valve.
    Type: Application
    Filed: January 11, 2012
    Publication date: July 19, 2012
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Atsushi Takaoku, Motoyuki Abe, Yasuo Namaizawa
  • Patent number: 8146839
    Abstract: A fuel injection device for an internal combustion engine includes a housing and a valve element which is arranged in the housing. The valve element interacts, in the region of a fuel outlet opening, with a valve seat. The valve element is embodied by at least one first part and at least one second part which are coupled to one another by means of a hydraulic coupler. The hydraulic coupler has a coupling chamber which is delimited at least partially by a sleeve which is guided on the first part of the valve element. Additionally a guide element guides an end region of the first part of the valve element, which end region being oriented toward the second part of the valve element.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: April 3, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Braun, Dirk Vahle, Martin Katz, Alexander Wernau
  • Patent number: 8123150
    Abstract: A nozzle is provided and includes a circuit by which fuel is delivered to a nozzle part and a valve, interposed between the circuit and the nozzle part and upon which the fuel impinges, an opening and closing of the valve being passively responsive to a fuel pressure in the circuit such that the valve thereby modulates a size of an area through which a corresponding quantity of the fuel flows from the circuit to the nozzle part.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 28, 2012
    Assignee: General Electric Company
    Inventors: Abdul Rafey Khan, Joseph Citeno, Christian Xavier Stevenson, Baifang Zuo
  • Patent number: 8087598
    Abstract: A nozzle module for an injection valve has a nozzle body with a recess with a wall, being operable to hydraulically couple the recess to a high pressure fluid circuit, a seal seat embodied on the wall, at least one nozzle needle arranged in an axially moveable fashion in the recess. The needle has a seat area with a sealing surface interacting with the seal seat to open and close the valve, respectively, and a supporting area, arranged radially outside and axially at a distance from the seat area and supporting the needle against the wall when the needle closes. The needle has at least one needle recess, which when the supporting area rests against the wall of the body recess, an area of the body recess facing axially away from the seat area is hydraulically coupled to an area of the body recess which axially faces the seat area.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: January 3, 2012
    Assignee: Continental Automotive GmbH
    Inventors: Uwe Leuteritz, Ferdinand Löbbering
  • Patent number: 8069653
    Abstract: A dispensing module having a dispenser body having a liquid passageway, a valve element movably mounted within the liquid passageway, and a nozzle removably coupled with the dispenser body. The nozzle has a valve seat contacted by a tip of the valve element for modulating liquid flow through the liquid passageway. The tip may be made of a harder material than the valve seat and may have a surface finish characterized by an Ra less than or equal to about 32 microinches. The tip may have a compound angle provided by contiguous frustoconical surfaces of differing included angles in which one frustoconical surface contacts the valve seat. The nozzle is configured to be attached to the dispenser body so that the valve seat and a sealing surface of the valve element tip form a circular line of contact when among multiple different nozzles and dispenser bodies.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: December 6, 2011
    Assignee: Nordson Corporation
    Inventor: Charles P. Ganzer
  • Patent number: 8061632
    Abstract: A fuel injector for internal combustion engines provided with a fuel feeding channel, the feeding channel having an axis and an injection outlet; an injection valve to control the outlet; an injection valve having a shutter arranged inside the feeding channel to define, within the feeding channel, a first fuel introduction section, the shutter being movable from and to a closing position along the feeding channel, which has a second section; and an annular sealing seat arranged on the feeding channel upstream of the outlet; an elastic member for normally keeping the shutter in the closing position; an actuator mechanism connected to the shutter to displace the shutter itself from the closing position and to an opening position of the outlet; and a hydraulic resistance that is provided along the feeding channel upstream of the annular sealing seat to balance the forces acting upon the shutter.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: November 22, 2011
    Assignee: Magneti Marelli S.p.A.
    Inventors: Stefano Petrecchia, Andrea Cobianchi
  • Publication number: 20110240769
    Abstract: A nozzle is provided and includes a circuit by which fuel is delivered to a nozzle part and a valve, interposed between the circuit and the nozzle part and upon which the fuel impinges, an opening and closing of the valve being passively responsive to a fuel pressure in the circuit such that the valve thereby modulates a size of an area through which a corresponding quantity of the fuel flows from the circuit to the nozzle part.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 6, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Abdul Rafey Khan, Joseph Citeno, Christian Xavier Stevenson, Baifang Zuo
  • Patent number: 7963464
    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: January 23, 2008
    Date of Patent: June 21, 2011
    Assignee: Caterpillar Inc.
    Inventors: Stephen R. Lewis, Shriprasad Lakhapati, Christopher D. Hanson, Avinash Manubolu, Daniel R. Ibrahim
  • Patent number: 7950414
    Abstract: A valve chamber is defined in a valve body of the regulating check valve. A first communicating hole and a second communicating hole communicate the valve chamber with a first flow passage and with a the second flow passage, respectively. A valve element is slidably installed in the valve chamber to seat on or lift away from a valve seat to close or open the first communicating hole. A pressure in the first flow passage urges the valve element away from the valve seat, and a pressure in the second flow passage urges the valve element toward the valve seat. The spring is interposed between the valve element and the valve body to urge the valve element away from the valve seat.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: May 31, 2011
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Takashi Suzuki, Kouichi Mochizuki
  • Patent number: 7950596
    Abstract: A fuel injector includes a fuel injector body defining a fuel inlet and at least one fuel outlet, a valve having a first valve state and a second valve state and an actuator for the valve. The fuel injector includes a biasing spring including a cylindrical rolled sheet having a first spring end, a second spring end and defining a longitudinal center axis. The cylindrical rolled sheet is configured to change in length to bias the actuator toward the first actuator position and includes a helical seam located between the first spring end and a second spring end which has a shape adapted to reduce non-uniformity in a spring constant via distributing stiffness about the longitudinal center axis.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 31, 2011
    Assignee: Caterpillar Inc.
    Inventors: Jay Venkataraghavan, Michael Long, Zhenlong Xu, Stephen Lewis
  • Patent number: 7946509
    Abstract: The invention relates to an injector for injecting fuel into a combustion chamber of an internal combustion engine. The injector is actuated by an actuator and is connected to a fuel supply line via which fuel is supplied under system pressure. At least one injection opening can be opened or closed off by an injection valve member, which is activated by a control piston via a control chamber to which the control piston and a piston section of the injection valve member are exposed with respective pressure faces. The control piston is a valve piston of a control valve. The pressure face of the control piston and the pressure face of the piston section of the injection valve member are exposed to the control chamber at the same side. The control piston and the piston section of the injection valve member also enclose a further control chamber which is connected to a fuel return line when the control valve is open and to the fuel supply line when the control valve is closed.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: May 24, 2011
    Assignee: Robert Bosch GmbH
    Inventor: Friedrich Boecking