Elongated Armature With Integral Projection Patents (Class 239/585.4)
  • Patent number: 12031509
    Abstract: A fuel injector assembly includes a valve housing, a valve stem that is disposed in the valve housing, a magnetic coil that surrounds the valve housing and is used to displace the valve stem within the valve housing, and a terminal blade. The terminal blade includes a bus bar that provides an electrical connection between the magnetic coil and an external connector. In addition, the terminal blade includes a clip that is connected to the bus bar at a clip first end and to the valve housing at a clip second end. The clip includes a sacrificial portion that is configured to part, for example by dissolving, when the terminal blade undergoes an overmolding process. As a result of the overmolding process, the clip is separated into multiple, spaced portions.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: July 9, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Sebastian Wieschollek, Manoj Menon
  • Patent number: 12006902
    Abstract: A fuel system for an internal combustion engine includes a pressurized fuel supply, and a fuel injector fluidly connected to the pressurized fuel supply. The fuel injector includes a valve seat plate forming a valve seat, an injection control valve, and a nozzle cavity. A filter, which can include a 2-dimensional filter, is positioned partially within the valve seat plate and partially within an injector body to filter an incoming flow of high-pressure fuel. The valve seat plate and filter are integrated in a valve seat plate and filter assembly.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: June 11, 2024
    Assignee: Caterpillar Inc.
    Inventors: Manjunath Bannur Nagaraja, Benjamin Ray Tower, Venkata R. Tatikonda, Adam Charles Hill
  • Patent number: 11878673
    Abstract: A cutoff valve comprises a coil wound around an outer periphery of a bobbin, a cylinder in contact with a protruding portion formed in an inner side of the bobbin, and an armature disposed inside the cylinder and moved in a winding axis direction of the coil by energization of the coil.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 23, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Hiromasa Yamasaki, Masaki Misuno, Chiharu Nakazawa
  • Patent number: 11867142
    Abstract: A multi-fuel injector assembly in one embodiment includes a first fuel injector assembly to deliver a first type of fuel and a second fuel delivery system to deliver a second type of fuel. The first fuel injector includes a first nozzle, at least one first needle, and at least one first actuator configured to move the at least one first needle. The at least one first actuator moves the at least one first needle to a first fuel delivery configuration that corresponds to a first fuel mixture composition, and a second fuel delivery configuration that corresponds to a second fuel mixture composition.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: January 9, 2024
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: Victor Manuel Salazar, Adam Edgar Klingbeil, Pradheepram Ottikkutti
  • Patent number: 11749507
    Abstract: According to one embodiment, a semiconductor manufacturing apparatus member is used inside a chamber of a semiconductor manufacturing apparatus. The member includes a base material and a ceramic layer. The base material includes a first surface, a second surface, and at least one hole. The at least one hole extends through the first and second surfaces. The ceramic layer is located on the first surface. The at least one hole includes an oblique surface and a perpendicular surface. The oblique surface is continuous with the first surface and is oblique to a first direction from the first surface toward the second surface. The perpendicular surface is positioned between the second surface and the oblique surface in the first direction and extends along the first direction. An angle between the first surface and the oblique surface is greater than an angle between the perpendicular surface and the oblique surface.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: September 5, 2023
    Assignee: Toto Ltd.
    Inventors: Ryunosuke Nakagawa, Tatsuya Koga
  • Patent number: 11703022
    Abstract: A fuel injector is configured such that a non-magnetic member constituting a magnetic circuit is deformed by an axial force generated when the non-magnetic member is combined with a cover and a housing, thereby providing airtight contact. The fuel injector is a device that injects fuel into an engine by raising a needle. A magnetic field generated from a coil forms a magnetic circuit when the coil is magnetized, and the magnetic circuit raises the needle. The fuel injector includes a block ring disposed inside the coil, a cover disposed at an upper end of the block ring, and a housing disposed at a lower end of the block ring. The block ring is made of a non-magnetic material and configured to extend the magnetic circuit. When the cover and the housing are combined by being screwed together, the upper end and the lower end of the block ring are deformed to provide airtight contact with respect to the cover and the housing, respectively.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: July 18, 2023
    Assignee: Hyundai Kefico Corporation
    Inventors: Dong-Hyun Kim, Hyung-Ik Kim, Hyun-Jick Lee
  • Patent number: 11674487
    Abstract: A fuel injector includes a needle valve including a spring-retaining section and a guide section that is adjacent to the spring-retaining section. The spring-retaining section includes an elongated portion and a flange that are together configured to support a spring assembly. The guide section includes a plurality of constricted portions alternatingly arranged with a plurality of expanded portions to define an undulating shape of the guide section. Each of the plurality of expanded portions includes a plurality of indentations to permit fuel to travel therealong to exit an outlet of the fuel injector. The guide section has a length that is substantially equal to a length of the spring-retaining section.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: June 13, 2023
    Assignee: Caterpillar Inc.
    Inventors: Cory Andrew Brown, Adam L. Stecklein
  • Patent number: 11572858
    Abstract: A fuel injector includes an injector body which accommodates a pole piece of a solenoid actuator. A top portion of the injector body includes a cylindrically formed generally open-ended recessed portion. The recessed portions accommodates a generally cylindrical pole piece, wherein the pole piece includes a bore located along a central axis to provide a fuel flow path. The top portion of the pole piece includes a cylindrically formed recess so as to form a sleeve or lip portion.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: February 7, 2023
    Assignee: DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA
    Inventors: Arnaud Leblay, Cas Breedijk
  • Patent number: 11525421
    Abstract: A high-pressure pump includes a pressurizing chamber forming portion, a suction passage forming portion, a seat member, a valve member, a cylindrical member, a needle, a movable core, a biasing member, a fixed core, and a coil including a winding portion. The coil generates an attractive force between the fixed core and the movable core when the winding portion is energized. The coil includes an outer cylindrical surface and multiple inner cylindrical surfaces that have different diameters. The multiple inner cylindrical surfaces are arranged in order of increasing diameter in a direction toward a pressurizing chamber. The movable core has an end surface that faces the fixed core, and the end surface of the movable core is located between a center, in an axial direction, of a smallest diameter one of the plurality of inner cylindrical surfaces and a center, in an axial direction, of the outer cylindrical surface.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: December 13, 2022
    Assignee: DENSO CORPORATION
    Inventors: Keita Kurigami, Shinichiro Koshimoto, Yoshihito Suzuki, Hiroshi Inoue, Tatsumi Oguri, Keigo Ohata, Takayuki Makihara, Taiki Kukita
  • Patent number: 11435006
    Abstract: An electromagnetic actuating device is described. The electromagnetic actuating device includes a pole sleeve, an armature disposed radially within the pole sleeve and a coil form of an electromagnetic coil disposed radially outside of the pole sleeve. The armature has a first armature end face at one end and a second armature end face at the opposite end. On or in the coil-form wall, the coil form has a longitudinal channel extending along the longitudinal direction of the coil form, by which a flow connection is created between the armature end faces.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: September 6, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Klaus Schudt, Bernhard Gnamm, Ursula Luetzelberger
  • Patent number: 11384709
    Abstract: Provided is a fuel injection control device that controls a fuel injection amount at higher accuracy. The fuel injection control device includes: a base waveform acquisition section 823 that generates a control current S9 for controlling a fuel injector 400; an A/D converter 824 that acquires a drive current P for the fuel injector 400 (controlled based on the control current S9) at each of measurement timings t1 to t6 based on a counter cycle; and an arithmetic operation section 821 that, based on a drive current P1 at a first measurement timing t1 and a drive current P2 at a second measurement timing t2 later than the first measurement timing t1, both acquired by the base waveform acquisition section 823, predicts a drive current P3 at a third measurement timing t3 later than the second measurement timing.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: July 12, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Eiichiro Ohata
  • Patent number: 11378200
    Abstract: The electromagnetically operated valve includes a valve body, a plunger member, electromagnetic driving means for driving the plunger member along a flow direction inside the valve body into at least an open position in which a fluid is allowed to flow through the valve body and into a closed position in which the fluid is not, wherein the plunger member is arranged to be forced by a pressure of flowing fluid into the closed position, and to be driven by the electromagnetic driving means into the open position.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: July 5, 2022
    Assignee: FICO TRANSPAR, S.A.
    Inventors: Olallo Alcaide Hernández, Jose Luis Villarubia Guarino, Sergi Civil Paulí
  • Patent number: 11253875
    Abstract: A fluid injector for injecting fluid is disclosed, including a body; a fluid passageway defined in the body and extending from an inlet to an outlet of the fluid injector; a valve seat disposed internally of the body and forming part of the passageway; a valve element that is selectively reciprocated relative to the valve seat to close and open the passageway to fluid flow by seating and unseating the valve element on and from the valve seat, respectively; and an orifice disc disposed in the passageway downstream of the valve seat in a direction of the fluid flow through the fluid injector, the orifice disc including a plurality of dimples and a plurality of orifices defined through the orifice disc, each dimple including at least one orifice located thereon and each dimple having an asymmetrical cross-section.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: February 22, 2022
    Assignee: Vitesco Technologies USA, LLC
    Inventors: Andreas Wolfgang Wildgen, Robert Wayne McFarland, Dennis Brian Dezern
  • Patent number: 11073120
    Abstract: A fuel injector, including a valve insert and a plug extrusion coating, is described, the valve insert including a valve sear and a valve housing. The valve housing has an alignment device, which is equipped to align the valve insert in an injection molding die, and the plastic extrusion coating has a second alignment device which is equipped to align the fuel injector during assembly in an internal combustion engine.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: July 27, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Rainer Naumann, Johann Bayer
  • Patent number: 11067045
    Abstract: In a fuel injection device, a driving unit structure has a magnetic aperture, in which an inner diameter is gradually enlarged toward the mover side, provided in an inner peripheral surface of the magnetic core. It is possible to reduce magnetic delay time upon valve opening from the supply of the electric current to the coil to the rise of magnetic flux and magnetic delay time upon valve closing from the stoppage of the electric current to the coil to reduction of magnetic flux, by providing a magnetic aperture in the inner peripheral surface of the magnetic core. Thus it is possible to improve the dynamic responsiveness upon valve opening and valve closing.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: July 20, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Tohru Ishikawa, Noriyuki Maekawa, Masahiro Soma, Takao Miyake, Yasuo Namaizawa
  • Patent number: 10995715
    Abstract: A coil assembly in a fuel injector includes a magnetic core and; a winding wound around the core, the winding being overmoulded and forming a cylindrical overmoulding. An axial blind hole extends towards the interior of the coil assembly from a first surface to a distal end, the blind hole being suitable for housing at least one spring for loading a magnetic armature. The coil assembly is provided with a degassing hole passing through the core and the overmoulding from the blind axial hole to an axial outer cylindrical surface, the degassing hole being provided in the magnetic core and having a restriction that is arranged in a first section that is proximal to the blind axial hole.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: May 4, 2021
    Inventors: Philippe Legrand, Bruno Bimbenet, Stéphanie Lefevre
  • Patent number: 10760561
    Abstract: The present disclosure relates to a solenoid valve having a ventilation structure, in which a connection passage for connecting a first space that is an operating space of an armature and a second space that is a lower space of a bobbin is formed on a bottom surface of a housing. The second space of the bobbin is connected with an outer space of the housing by a communication path. Accordingly, by connecting the first space that is the operating space of the armature with an outer space of the solenoid valve, a negative pressure can be avoided in the operating space of the armature, thus preventing the performance of the armature from being deteriorated.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: September 1, 2020
    Assignee: HYUNDAI KEFICO CORPORATION
    Inventors: Jae Kyung Lee, Ho Yeon Kim
  • Patent number: 10711749
    Abstract: The disclosure relates to a fuel injection valve that includes a valve needle, a closing spring applying a spring force to the valve needle, which spring force loads the valve needle in the direction of a closing position, and an actuator assembly. A coil of the actuator assembly produces a magnetic force on a magnet armature of the actuator assembly such that, as the magnet armature travels toward a pole piece of the actuator assembly, the magnet armature covers an idle stroke to a stop element of the valve needle and then carries the valve needle toward the pole piece. A spring constant of the closing spring and the magnetic force are matched such that the magnitude of the resultant force of the spring force and the magnetic force decreases with increasing distance of the valve needle from the closing position and remains the same with increasing the distance.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 14, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Dejan Jovovic, Hong Zhang, Xaver Gebhardt
  • Patent number: 10648440
    Abstract: A fuel injection valve includes a valve housing having an injection hole and a valve seat surface tapering toward a downstream side, a valve component that is accommodated in the valve housing and is coaxially separated from or seated on the valve seat surface, and an elastic component biasing the valve component toward the valve seat surface. The valve component includes an inner convex surface curved in a partial spherical shape with a predetermined curvature radius, and an outer convex surface that is provided continuously to the outer peripheral side of the inner convex surface and curved in a partial spherical shape having a smaller curvature radius than the inner convex surface. A boundary portion between the inner convex surface and the outer convex surface protrudes toward the valve seat surface so as to be able to be separated from or seated on the valve seat surface.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: May 12, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yuusuke Toda, Shuichi Matsumoto, Yoshinori Yamashita
  • Patent number: 10641221
    Abstract: The present disclosure relates to internal combustion engines. Various embodiments may include an electromagnetic injection valve, particularly a solenoid type fluid injection valve for automotive applications. For example, an electromagnetic injection valve may include: an inlet tube; a valve body having a longitudinal axis and a cavity in which a valve needle moves; an upper magnetic ring press-fitted with the inlet tube or the valve body; a lower magnetic ring press-fitted with the valve body; and a housing part surrounding an electromagnetic actuator unit for moving the valve needle. The lower magnetic ring is positioned on the valve body in such a way that an upper side of the lower magnetic ring is in close contact with an underside of the housing part. The electromagnetic actuator unit abuts the upper magnetic ring and the lower magnetic ring on opposite axial sides. The housing part and/or the lower magnetic ring comprises a cut extending along the axis.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: May 5, 2020
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Stefano Carmela Filippi, Mauro Grandi, Francesco Lenzi, Valerio Polidori
  • Patent number: 10637317
    Abstract: The present disclosure provides an electromagnetic actuator that drives an armature by an electromagnetic force. The electromagnetic actuator includes a stator, a coil, and an insulator. The stator is formed of a magnetic material and has a cylindrical portion. The coil is disposed outside of the stator. The coil generates a magnetic field when being energized. The insulator is disposed in a particular region of the stator facing the coil in a radial direction. The insulator extends partially along the stator in a circumferential direction and suppresses a current flowing through the stator in the circumferential direction. The stator is continuously formed entirely along the circumferential direction by the magnetic material.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: April 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kazuya Sassa, Naofumi Adachi, Shingo Kitani
  • Patent number: 10563609
    Abstract: A fuel injector includes a nozzle having at least one first orifice. The at least one first orifice selectively injects a first fuel. An outer check is located movably within the nozzle. The outer check includes at least one second orifice. The at least one second orifice selectively injects a second fuel. An inner check is located movably and concentrically within the outer check. The at least one first orifice is adapted to selectively inject at least one of the first fuel and the second fuel therethrough based on a position of each of the outer check and the inner check.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: February 18, 2020
    Assignee: Caterpillar Inc.
    Inventors: Bobby John, Glen Clifford Martin, Jonathan W. Anders, Robert M. Campion
  • Patent number: 10563631
    Abstract: The present disclosure relates to filters in general, and the teachings may be applied to a filter assembly for use in a fuel injector, the fuel injector, and internal combustion engines. A filter assembly may include: a filter element with a frame having an axial end and a tubular filter housing receiving the filter element. The filter housing may have a side wall with a taper supporting the axial end. The taper may have the shape of a conic section with an opening angle ? of less than 180°. The outer circumferential surface of the frame may include a first section in the section of the taper having the shape of a conic section with an opening angle ? of less than 180°.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: February 18, 2020
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Ivano Izzo, Cedric Louis Adrien Leger-Cartier, Gianluigi Manzo, Luca Matteucci, Marco Mechi
  • Patent number: 10550809
    Abstract: A valve assembly for an injection valve is disclosed. The valve assembly includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle, an armature which is able to slide on the valve needle, and a disc element positioned to limit axial displaceability of the armature relative to the valve needle. The disc element includes a plurality of passages extending in axial direction through a disc-shaped part of the disc element. The passages provide a first flow resistance for a fluid passing in a direction away from the fluid outlet passage and a second flow resistance in a direction towards the fluid outlet passage, wherein the second flow resistance is larger than the first flow resistance.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 4, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Ivano Izzo, Filippo Falaschi
  • Patent number: 10502112
    Abstract: A fluid injector, including a fluid inlet, a fluid outlet and a fluid path from the fluid inlet to the fluid outlet; a tube having an end at the fluid inlet; a filter disposed in the tube proximal to the fluid inlet; and a volume reduction member disposed in the tube downstream of the filter, contacting an inner surface of the tube and including a through-bore defining at least a portion of the fluid path, the bore having a smaller diameter than an inner diameter of the tube and the volume reduction member occupying a volume in the tube such that the volume reduction member reduces an amount of space for fluid in the fluid injector. A cap member, in which the filter is disposed, engages with the volume reduction member such that the filter, the volume reduction member and the cap form a single assembly member.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: December 10, 2019
    Assignee: Vitesco Technologies USA, LLC
    Inventors: Josh Lee Hatfield, Stephen C Bugos
  • Patent number: 10288022
    Abstract: In an electromagnetic fuel injection which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core, and a non-magnetic portion made of a metal material is provided between both end surfaces, an object of the present invention is to realize a structure of the electromagnetic fuel injector in which a surface of a target object is unlikely to be affected by a heat treatment with the surface facing the movable iron core.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: May 14, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshihito Yasukawa, Hideharu Ehara, Tohru Ishikawa, Kiyotaka Ogura, Motoyuki Abe, Ryo Kusakabe, Akiyasu Miyamoto
  • Patent number: 10280886
    Abstract: An object of the present invention is to provide a fuel injection valve which has a structure where failure hardly occurs in a valve member and a peripheral member thereof at the time of press-fitting of a fixed core. The present invention provides a fuel injection valve that includes: a valve member 114A; an anchor 102 which is relatively displaceable with respect to the valve member 114A; a fixed core 107 in which a through-hole 107A is formed; a gap forming member 133 which forms a gap between an engagement portion 129B on the valve member side and an engagement portion 102D on the anchor side; and a biasing spring 134 which biases the gap forming member 133 in a valve closing direction. The engagement portions 102D and 129B are provided in both the anchor 102 and the valve member 114A so as to be engaged with each other when the anchor 102 is displaced in a valve opening direction with respect to the valve member 114A, thereby regulating the displacement of the anchor 102 in the valve opening direction.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: May 7, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Masashi Sugaya, Kiyotaka Ogura, Takao Miyake, Yoshihito Yasukawa, Ryo Kusakabe, Atsushi Nakai
  • Patent number: 10113524
    Abstract: A fuel injector, including a valve insert and a plug extrusion coating, is described, the valve insert including a valve seat and a valve housing. The valve housing has an alignment device, which is equipped to align the valve insert in an injection molding die, and the plastic extrusion coating has a second alignment device which is equipped to align the fuel injector during assembly in an internal combustion engine.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: October 30, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Rainer Naumann, Johann Bayer
  • Patent number: 10082117
    Abstract: A method of controlling a fuel injection device that can control a small amount of injection is provided. A fuel injection device for use in an internal combustion engine, includes: a valve body that can open and close a fuel passage, a needle that transfers a force with the valve body, and executes valve opening/closing operation, and an electromagnet that includes a coil and a magnetic core provided as a driver for driving the needle, and a cylindrical nozzle holder disposed on an outer periphery of the magnetic core and the needle, in which a current is supplied to the coil to exert a magnetic attractive force between the magnetic core and the needle to open the valve body.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: September 25, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ryo Kusakabe, Motoyuki Abe, Yoshihito Yasukawa, Noriyuki Maekawa, Takuya Mayuzumi, Tohru Ishikawa
  • Patent number: 9903327
    Abstract: A fuel injector includes a valve with a needle that is movable along a longitudinal axis between an open position and a closed position, for opening or closing the valve. The fuel injector also includes an actuator including an armature and a pole piece, the armature being axially movable and operable to interact mechanically with the needle, such that the needle is moved towards the open position by a movement of the armature in axial direction towards the pole piece. The fuel injector also includes a first spring for biasing the armature in axial direction away from the pole piece. The spring force of the first spring is configured to stop said movement of the armature when the needle is in the open position.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: February 27, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Ivano Izzo, Marco Mechi
  • Patent number: 9863333
    Abstract: A dual fuel injector may be used to inject 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: January 23, 2015
    Date of Patent: January 9, 2018
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark F. Sommars, Xiangdong Ding
  • Patent number: 9856989
    Abstract: A valve body for an electromechanically operable valve is produced by providing a base element with a circumferential sidewall having a first portion, a second portion, and a third portion, the sidewall being made of a ferromagnetic material and enclosing a cavity extending along a longitudinal axis. The third portion is positioned in longitudinal direction between the first portion and the second portion. A thickness of the third portion is smaller than a thickness of the first portion and the second portion. Hardening the third portion is achieved by laser heating, which transforms a material structure of the third portion into a martensitic structure. The locally decreased thickness creates a bottleneck for a magnetic flux, and a magnetic flux bypass in the valve body is reduced due to magnetic saturation; however, a structural resistance of the valve body remains high due to the laser induced hardening.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: January 2, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Francesco Lenzi, Stefano Filippi, Mauro Grandi
  • Patent number: 9771907
    Abstract: A fuel injector for an internal combustion engine includes an injector body, a first actuator for controlling movement of a first valve needle for injecting a first fuel into a cylinder of the engine, and a second actuator for controlling movement of a second valve needle for injecting a second fuel into the cylinder. Each of the actuators are axially spaced along a longitudinal axis of the injector body and has a respective conductive element for carrying current to the actuator, the injector further includes an electrical connector module which has first and second electrical connectors for connection with an associated one of the conductive elements for the actuators. The electrical connector module is mounted between the first and second actuators along the longitudinal axis of the injector body.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 26, 2017
    Assignees: Westport Power Inc., Delphi International Operations Luxembourg S.A.R.L.
    Inventors: George A. Meek, Lukhbir Panesar
  • Patent number: 9677520
    Abstract: A valve for metering fluid is reported which has a valve housing having a valve opening and a valve seat, a valve needle, which is provided for the alternating closing and opening of the valve using a closing member cooperating with the valve seat, a resetting element that acts on the valve needle for closing the valve and an electromagnet that is able to have current applied to it, having a magnet armature that is drivable to a lift motion, which sits axially displaceably on the valve needle and carries along the valve needle in the lift direction for opening the valve via a driving flange situated on it. To simplify production and the assembly of the valve while achieving the advantages characteristic in valves having a prestroke spring and an armature free path, the magnet armature is supported on the valve housing using a diaphragm spring.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: June 13, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Martin Buehner, Michael Mayer, Michael Knorpp
  • Patent number: 9611951
    Abstract: A solenoid valve has: a valve body; a moving core with a valve body on one end; a guide tube slidably enclosing the moving core; a stationary core disposed in an inner circumference of an opposite end portion of the guide tube so as to face an opposite end of the moving core; a valve spring to urge the moving core in a direction away from the stationary core; an electromagnetic coil disposed to enclose the guide tube; and a magnetic plate disposed on an opposite end of the guide tube having a caulked portion. The guide tube has a caulked portion formed to fix in position the stationary core by engagement of the caulked portion with a recessed groove formed on an outer periphery of the stationary core. When the stationary core is fixed in position by the caulked portion, that surface of the stationary core which faces the magnetic plate is either flush with, or is protruding beyond, the opposite end of the guide tube.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: April 4, 2017
    Assignee: RINNAI CORPORATION
    Inventor: Kimihiro Yoshimura
  • Patent number: 9546627
    Abstract: In a support structure of a direct fuel injection valve capable of supporting a fuel injection valve stably for a long period of time, a valve housing is made of a metal and is provided with a first load bearing portion which is to be supported by an engine in an axial direction of the valve housing, a rear end portion of the fixed core is provided with a second load bearing portion which is to be supported by a resilient holding member in the axial direction, and the first and second load bearing portions are held between the engine and the resilient holding members with a forward set load applied to the resilient holding member by a fuel distribution pipe fitted to a fuel inlet tube and fixed to the engine.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: January 17, 2017
    Assignee: Keihin Corporation
    Inventors: Atsushi Okamoto, Atsushi Kamahora, Junichi Miyashita, Noriaki Sumisya
  • Patent number: 9429128
    Abstract: An objection of the present invention is to provide a fuel injection valve with a reduced variation in an injection amount and, in order to achieve this object, a method for adjusting stroke, the method being able to correct change in an amount of stroke caused by welding. In the method for adjusting the amount of stroke of a movable member of a fuel injection valve including a nozzle member having a seat face, a nozzle holder member to which the nozzle member is joined by welding, and the movable member having a valve seat portion for coming in contact with the seat face, the amount of stroke of the movable member is adjusted by plastically deforming a deformable portion provided to the nozzle holder member after joining the nozzle member and the nozzle holder member by welding.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: August 30, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kenichi Gunji, Shin Onose, Takeshi Matsumaru, Katsuya Oonuki, Makoto Matsutate
  • Patent number: 9382884
    Abstract: A valve for metering fluid under pressure includes: a valve housing which has an inlet opening and a metering opening as well as a valve seat enclosing the metering opening having an outwardly pointing seat surface; a valve needle carrying a closing head; a valve-closing spring acting on the valve needle and applying the closing head to the valve seat; and an electrical actuator, which applies a compressive force to the valve needle, lifting the closing head outwardly away from the valve seat. To prevent transverse forces on the valve needle, which can cause a deflection of the valve needle, a gimbal-mounted spring disk, which is pushed onto the valve needle, is used as the valve-closing spring.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: July 5, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Dietmar Schmieder, Tilo Landenfeld
  • Patent number: 9366270
    Abstract: A damping valve arrangement is provided for controlling a pilot pressure that exerts influence on a control chamber of a damping device of a vibration damper through a control fluid, with an armature that is displaceable by the activity of an electrically energizable coil and provided in a housing, which armature includes a guide pin on which a first spring washer is provided and braces the guide pin. The first spring washer is designed for changing the area of a flow-through opening of the damping valve arrangement through which a control fluid is able to flow.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 14, 2016
    Assignee: WP Performance Systems GmbH
    Inventor: Johannes Wimmer
  • Patent number: 9316191
    Abstract: A valve assembly for an injection valve may comprise a valve body including a central longitudinal axis, the valve body comprising a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in further positions, the valve needle comprising a ring element extending radially and arranged at an axial end of the valve needle facing away from the fluid outlet portion, and an electro-magnetic actuator unit being designed to actuate the valve needle.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: April 19, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Mauro Grandi
  • Patent number: 9188094
    Abstract: A fuel injector for fuel-injection systems of internal combustion engines includes an electromagnetic actuating element having a solenoid coil, a fixed core, an outer magnetic circuit component, and a movable armature for actuating a valve-closure element, which cooperates with a valve-seat surface provided on a valve-seat element. The injector is characterized by its extremely small outer dimensions. The flexibility in the installation of fuel injectors of varying valve lengths, which is made possible very simply due to the special modular design, is significantly increased in this manner. An optimized dimensioning of the electromagnetic circuit allows for a DFR (dynamic flow range) greater than 17, the DFR being defined as the quotient of qmax/qmin.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: November 17, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Juergen Graner, Martin Maier, Takuya Mizobe, Bernd Rieg, Volker Sohm, Juergen Lander
  • Patent number: 9127633
    Abstract: An actuator arrangement for an electromagnetically operated fuel injector includes a generally cylindrical actuator core having a longitudinal axis and defining an inner pole face of the actuator arrangement. The actuator core is formed of a bespoke magnetic material. A wire coil is disposed around the actuator core arranged to be connected to a power source to generate a magnetic field around the coil. A pole member is formed of a high strength material and defines an aperture for receiving the actuator core. The pole member defines an outer pole face of the actuator arrangement substantially co-planar with the inner pole face. An armature is movable in a direction parallel to the longitudinal axis in response to the magnetic field. The magnetic field passes into the armature in the region of the inner pole face and into the armature in the region of the outer pole face.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: September 8, 2015
    Assignee: Delphi International Operations Luxembourg S.A.R.L.
    Inventors: Thomas W. Canepa-Anson, Anthony Thomas Harcombe, Bashir Khan, Mark S. Graham, Mark S. Harper
  • Patent number: 9027859
    Abstract: A gas fuel injection valve is provided in which a circular recess is formed in a front end face of a valve plunger, the circular recess being surrounded by an annular land part, which is an outer peripheral part of the front end face, an inner peripheral face of the circular recess is formed in a tapered shape so as to increase in diameter in going from a base of the circular recess toward the annular land part, an annular lip is formed on a seating member, the annular lip being joined from the inner peripheral face through to the annular land part and being seated on a valve seat, and the annular lip is disposed so that an annular ridge line of an apex of the annular lip is positioned, in a projection in the axial direction of the valve plunger, above the inner peripheral face.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: May 12, 2015
    Assignee: Keihin Corporation
    Inventor: Naoto Takiguchi
  • Publication number: 20150102135
    Abstract: A valve assembly for an injection valve includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity between a closing position preventing a fluid flow through the fluid outlet portion and further positions releasing the fluid flow through the fluid outlet portion, an electro-magnetic actuator unit that actuates the valve needle, and includes an axially movable armature in the cavity and a disc element fixedly coupled to the valve needle and configured to limit the axial movement of the armature relative to the valve needle towards the fluid outlet portion. An armature spring biases the armature away from the disc element for establishing a fluid-filled gap between the armature and the disc element. The armature is axially displaceable towards the disc element against the armature spring bias to reduce an axial size of the gap.
    Type: Application
    Filed: May 7, 2013
    Publication date: April 16, 2015
    Inventor: Ileana Romeo
  • Patent number: 8998114
    Abstract: A reagent injector with a cartridge design has a body with a reagent inlet, outlet, and a swirl chamber, which has an exit orifice that may be covered and uncovered by a solid, movable pintle. Reagent flows through the injector when the exit orifice is covered and uncovered to cool the injector. An insulator may be disposed between the injector body and a mounting flange connectable to an exhaust system. A flow path ensures cooling of an electromagnetic actuator. Reagent may bypass an orifice swirl chamber when the pintle blocks the exit orifice. Fluid may flow between an outside diameter of a pole piece and an inside diameter of an electromagnetic actuator, through an orifice chamber and return through a central bore housing a solid pintle, around which fluid may flow. Different inner injector body passages may direct fluid into an orifice distribution chamber and out to the solid pintle.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: April 7, 2015
    Assignee: Tenneco Automotive Operating Company, Inc.
    Inventors: Keith Olivier, Stephen Thomas, John Lowry
  • Patent number: 8998116
    Abstract: An injector for injecting a reagent includes an electromagnet and an axially translatable valve member positioned within a housing. The valve member is moveable from a seated position to an unseated position in response to energizing the electromagnet. The valve member includes a hollow tube including a curled end having a reduced diameter sized to allow a ball to partially extend beyond the tube end but not pass through the tube. The tube includes an inwardly extending detent restricting the ball from movement within the tube. A pintle head is fixed to the tube and positioned proximate the electromagnet.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: April 7, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: John M. Lowry, David Blumhardt, Eric Grant
  • Publication number: 20150060576
    Abstract: A fuel injector includes a body, a main valve body, a sub valve body, an electric actuator, and a valve-opening force transmission mechanism. The body houses a main passage through which fuel flows to an injection, and a sub passage branched from the main passage and through which the fuel flows to the injection port. The main valve body opens or closes the main passage, and the sub valve body opens or closes the sub passage. The electric actuator applies a valve-opening force to the sub valve body. The valve-opening force transmission mechanism transmits the valve-opening force of the sub valve body to the main valve body to open the main valve body in a condition that a valve-opening stroke of the sub valve body is greater than or equal to a predetermined amount.
    Type: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventors: Yoshiharu NONOYAMA, Hiroaki NAGATOMO
  • 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: 8931718
    Abstract: A valve assembly for an injection valve may include a valve body comprising a cavity with a fluid inlet portion and a fluid outlet, and a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet in a closing position and releasing the fluid flow through the fluid outlet in further positions, the valve needle comprising a radially extending protrusion and an electro-magnetic actuator unit configured to actuate the valve needle and comprising an armature in the cavity. The armature comprises an armature cavity having a first stop surface and a second stop surface that faces the first stop surface. The protrusion of the valve needle is arranged in the armature cavity axially between the first stop surface and the second stop surface such that a relative movement between the valve needle and the armature in axial direction is limited.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: January 13, 2015
    Assignee: Continental Automotive GmbH
    Inventors: Mauro Grandi, Valerio Polidori, Cristiano Mannucci
  • Patent number: 8919674
    Abstract: A fuel injection valve that promotes formation of thin membranes of fuel within injection holes and promotes atomization of spray is obtained. Holes provided in an injection hole plate 11 are combined injection holes 16 formed by partially overlapping two or more single injection holes 15a, 15b, 15c from an upstream side to a downstream side of the injection hole plate 11, each of the single injection holes is a circular hole, the single injection hole has an injection hole angle ? defined by a tilt angle of a center axis line connecting an entrance part center and an exit part center relative to a plate thickness direction of the injection hole plate 11, areas of exit parts 16b are larger than areas of entrance parts 16a in the combined injection holes 16, and the combined injection holes 16 are formed by press working.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kyosuke Watanabe, Naoya Hashii, Tsuyoshi Munezane