Electromagnetically Operated Valve (e.g., Ball-type) Patents (Class 239/585.1)
  • Patent number: 10634106
    Abstract: The invention relates to a method for determining an electrical resistance value for a fuel injector having a solenoid drive. The method comprises the following: (a) applying a voltage pulse to the solenoid drive of the fuel injector, (b) sensing a temporal progression of the current intensity of a current (I) flowing through the solenoid drive, (c) calculating a series of linked fluxes (?) as a function of current intensity (I), wherein each linked flux (?) is calculated on the basis of the temporal progression of voltage and current intensity (I) and on the basis of a hypothetical resistance value from a series of hypothetical resistance values, and (d) selecting one of the hypothetical resistance values as a determined resistance value on the basis of an analysis of the calculated series of linked fluxes (?). The invention further relates to a method for determining a temperature of a coil of a fuel injector having a solenoid drive, to a motor controller, and to a computer program.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: April 28, 2020
    Assignee: Vitesco Technologies GmbH
    Inventor: Frank Denk
  • Patent number: 10598114
    Abstract: A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: March 24, 2020
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 10563788
    Abstract: The invention is an electromagnetic valve, comprising at least one valve seat arranged between at least one inlet channel and at least one outlet channel, a sealing element by which the valve seat can be closed, and an actuating element by which the sealing element can be moved in order to close the valve seat, with the actuating element comprising at its end pointing to the sealing element a cup-shaped seat, with a support element being arranged in said cup-shaped seat, and a sealing element that is connected fixed to the support element.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: February 18, 2020
    Assignee: KENDRION (VILLINGEN) GMBH
    Inventors: Joachim Fluehs, Holger Brandenburg, Bjoern Bergfeld, Frank Zelano
  • Patent number: 10502170
    Abstract: A mobile valve member designed to be arranged in the nozzle body of a fuel injector, extends along a main axis and includes a piston formed of a first male cylinder of effective diameter forming the top end of the mobile member and of a second cylinder provided with an internal cylindrical bore of the effective diameter and a shutoff member including a male cylindrical shaft of the effective diameter that fits slidingly in the internal bore, and of a member extending as far as a pointed end provided with a mobile seat and forming the bottom end of the mobile member. The mobile member is hydraulically balanced and the length between the top end and the bottom end thereof is variable as a result of the sliding of the cylindrical shaft in the internal bore of the piston.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: December 10, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Thierry Thibault, Nicolas Rodier
  • Patent number: 10487787
    Abstract: An injector tip for a fuel injector includes an exterior surface, and an interior surface defining a sac region therein. The injector tip is also configured to define at least one orifice radially extending from the interior surface to the exterior surface. The orifice is disposed in communication with the sac region located adjacent to the interior surface. Further, the injector tip also includes a mound that is defined on the interior surface such that the mound is integrally formed with the interior surface adjacent to the sac region. The mound is configured to extend along an axis of the sac region and terminate prior to a perimeter of the at least one orifice.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: November 26, 2019
    Assignee: Caterpillar Inc.
    Inventor: Glen Clifford Martin
  • Patent number: 10465582
    Abstract: An injector for injecting a reagent into an exhaust stream includes an outer tube extending through an electromagnet and surrounding an inner tube. A first end of the inner tube is sealingly fixed to an inner surface of the outer tube. A guide member and an orifice plate are each sealingly fixed to the inner surface of the outer tube. A second end of the inner tube is aligned by the guide member. A moveable valve member includes a pintle head guided by the inner surface of the outer tube to align the valve member with an orifice extending through the orifice plate.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: November 5, 2019
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Keith Olivier, Thomas P. Mallin, Matthew L. Roessle, Rick Simpson
  • Patent number: 10428710
    Abstract: An injector for adding a liquid additive into an exhaust gas treatment apparatus includes at least one nozzle having a spray disc configured to inject the liquid additive into the exhaust gas treatment apparatus. The spray disc has: at least one spray duct, through which flow of the liquid additive can pass, the spray duct having an outlet opening configured to shape a spray jet of the liquid additive. The spray disc has a reinforcing structure arranged downstream of the outlet opening, the reinforcing structure being configured such that it is not wetted by the spray jet.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: October 1, 2019
    Assignee: Continental Automotive GmbH
    Inventors: Sven Schepers, Rolf Brück
  • Patent number: 10428778
    Abstract: A fuel injection valve includes: a housing that includes an injection hole and a valve seat; a needle that includes a flange at a radially outer side of the needle and opens or closes the injection hole; a movable core that is installed on the valve seat side of the flange; a first spring that urges the needle toward the valve seat side; a second spring that urges the movable core toward an opposite side, which is opposite from the valve seat; and a limiting member that is installed on a radially outer side of the needle such that the limiting member enables movement of the movable core between the limiting member and the flange on the valve seat side of the flange. The limiting member includes an outside projection, which supports the second spring; and a tubular portion and an inside projection, which are contactable with the movable core.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: October 1, 2019
    Assignee: DENSO CORPORATION
    Inventors: Shinsuke Yamamoto, Kouichi Mochizuki
  • Patent number: 10415523
    Abstract: Fuel injection valve having a magnet armature (18) which interacts with a valve seat (19), which is formed on a valve piece (15), in order to open and close an outflow opening (20), wherein the magnet armature (18) can be moved away from the valve seat (19) by an electromagnet (24). A valve piece (15) delimits a control chamber (12), wherein the outflow opening (20) opens into the control chamber (12), and the control chamber (12) can be charged with fuel at high pressure that exerts a hydraulic force on the valve piece (15). Between the magnet armature (18) and the valve piece (15), there is arranged a bracing element (30) which is preloaded against the valve piece (15) and which exerts a force on the valve piece (15) in the region of the outflow opening (20) in the direction of the control chamber (12).
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 17, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Blatterer, Gerhard Girlinger, Roland Mitter
  • Patent number: 10400723
    Abstract: A first spring axially urges a needle valve toward an injection hole. A second spring axially urges a movable core toward a stationary core with an urging force that is smaller than an urging force of the first spring. A stopper is placed on one axial side of the movable core where the injection hole is located. The stopper limits movement of the movable core toward the injection hole to limit an amount of compression of the second spring.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: September 3, 2019
    Assignee: DENSO CORPORATION
    Inventors: Haruki Suzuki, Akinori Harada
  • Patent number: 10316982
    Abstract: A solenoid actuator is provided that includes a casing. A coil is positioned within the casing. A flux tube and axially separated pole piece are encircled by the coil. An armature is slidably mounted within bores of the flux tube and pole piece. The flux tube and pole piece are separated by a flux choke. A core shunt juxtaposes the pole piece from the flux choke. The core shunt, on major cross-sectional tubular thickness and a minor cross-sectional tubular thickness has an outer diameter of a curved shunt to provide enhanced performance stability.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: June 11, 2019
    Assignee: BorgWarner Inc.
    Inventor: Daniel L. Deland
  • Patent number: 10309356
    Abstract: A gap forming member has: a plate portion that is placed on an opposite side of a needle, which is opposite from a valve seat; and an extending portion that is formed to extend from the plate portion toward the valve seat, while an opposite end part of the extending portion, which is opposite from the plate portion, is contactable with a movable core. A first wall surface of the gap forming member, which is a wall surface opposed to an outer wall of the flange, is slidable relative to the outer wall of the flange, and a second wall surface of the gap forming member, which is a wall surface opposed to an inner wall of a stationary core, forms a radial gap, which is a gap in a radial direction, between the second wall surface and the inner wall of the stationary core.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: June 4, 2019
    Assignee: DENSO CORPORATION
    Inventors: Shinobu Oikawa, Tomoji Matsukawa, Shinsuke Yamamoto, Moriyasu Gotoh, Eiji Itoh
  • Patent number: 10288027
    Abstract: The present application concerns a fuel-injection metering device for a motor vehicle. The fuel-injection device include a main body with at least one through-hole, whereby the main body forms a valve seat on its inner face that is provided to interact with a valve body, whereby the inner face of the main body is electrochemically machined. The application also concerns a mold, a production method, and a fuel-injection nozzle.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: May 14, 2019
    Assignee: STOBA HOLDING GMBH & CO., KG
    Inventors: Oliver Günther, Markus Günther, Thomas Hög, Hans-Joachim Konietzni, Matthias Leichtle, Klaus Pfendtner, Ulrich Wagner
  • Patent number: 10242787
    Abstract: A solenoid device includes two electromagnetic coils, two stationary cores, two plungers and a yoke that surrounds the two electromagnetic coils. When a first electromagnetic coil is energized, magnetic flux flows through a first magnetic circuit that includes the first stationary core. When the two electromagnetic coils are energized, magnetic flux of the first electromagnetic coil flows through the first magnetic circuit, and magnetic flux of the second electromagnetic coil flows through a second magnetic circuit that includes a second stationary core. When energization of the first electromagnetic coil is stopped while maintaining energization of the second electromagnetic coil, the magnetic flux of the second electromagnetic coil continues to flow through the second magnetic circuit and a third magnetic circuit that includes the two stationary cores. A magnetism limiting portion is disposed in a portion of the second magnetic circuit that does not overlap the third magnetic circuit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: March 26, 2019
    Assignees: NIPPON SOKEN, INC., DENSO CORPORATION, ANDEN CO., LTD.
    Inventors: Ken Tanaka, Shota Iguchi, Tomoaki Tanaka
  • Patent number: 10202051
    Abstract: A back-drive speed control system for incorporation into an actuated vehicle seating system includes an actuator having a permanent magnet and a coil that can move relative to each other to create a voltage across a first terminal and a second terminal. The actuator is adapted to move a linkage in an actuated vehicle seating system. A biasing member moves one or both of the permanent magnet and the coil such that the first terminal has a positive potential relative to the second terminal. The back-drive speed control system further includes a first diode and a Zener diode in series connected across the first terminal and the second terminal such that the forward current direction of the first diode is oriented in the opposite direction to the forward current direction of the Zener diode.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: February 12, 2019
    Assignee: LEAR CORPORATION
    Inventors: Curtis Hudson, Craig Elder, Mark R. Keyser
  • Patent number: 10197179
    Abstract: An electromechanical actuator for controlling the delivery rate of reciprocating compressors, comprising: a movable rod designed to cooperate at one end with a suction valve of a reciprocating compressor and at the other with a moving element made of a magnetizable material; at least one chamber in which said moving element is housed and onto which at least one winding of an electromagnet positioned inside a seat facing said chamber protrudes, there being positioned between said winding and said chamber at least one protective element made of a non-magnetic material and provided with static sealing elements and designed to keep the winding of the electromagnet separated from the chamber in which said moving element is housed, characterized in that said protective element made of a non-magnetic material comprises at least two series of static sealing elements, a first series being positioned internally to the protective element and a second series being positioned externally to the protective element, with gas
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: February 5, 2019
    Assignee: DOTT. ING. MARIO COZZANI S.R.L.
    Inventors: Massimo Schiavone, Andrea Raggi
  • Patent number: 10197028
    Abstract: A fuel injector is provided. A movable iron core is provided relatively displaceable to a valve body. A fixed iron core is opposed to the movable iron core. A first spring member energizes the valve body in a valve closing direction. A second spring member energizes the movable iron core in a valve closing direction. Contact portions are in contact with each other in a case where the movable iron core displaces in a valve opening direction with respect to the valve body. A gap is formed between the contact portions in a valve closing state. In a state in which the movable iron core and the valve body move in different directions after the movable iron core collides with the fixed iron core while a valve is opened, a spring force is not applied between the movable iron core and the valve body.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: February 5, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD
    Inventors: Yoshihito Yasukawa, Takao Miyake, Atsushi Nakai, Masashi Sugaya, Akiyasu Miyamoto, Kiyotaka Ogura, Motoyuki Abe
  • Patent number: 10167817
    Abstract: Disclosed is a compressed natural gas injector. The injector includes: a housing provided at a fuel supply pipe of an engine; a needle valve provided at a lower portion of the housing, and having an injection nozzle; a solenoid having a coil provided in the housing and generating a magnetomotive force by receiving power, and a core generating an attraction force due to the magnetomotive force; a reciprocating plunger provided below the solenoid; and an elastic member placed on the plunger and including a contact portion provided in parallel to a lower surface of the core, and a protruding portion inclinedly protruding upwards and outwards from the contact portion.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: January 1, 2019
    Assignee: DONGBANGTECH CO., LTD.
    Inventors: Dong Jo Kim, Jong Wan Lim
  • Patent number: 10107243
    Abstract: A fuel injection valve includes: a holder which accommodates a valve body, has a surface magnetically facing the outer periphery of an armature, and is joined to a core; a housing which is press-fitted onto the outer periphery of the holder and accommodates a coil; and a cap which covers the fuel upstream side of the coil in a lid shape and is press-fitted onto the outer periphery of the core. The lower surface of the cap is brought into contact with the upper end surface of the housing in a radially slidable state and then an outer peripheral portion of a contact surface between the cap and the housing is joined by laser welding.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Norihisa Fukutomi, Akio Shingu, Kyosuke Watanabe, Tsuyoshi Munezane, Manabu Hirai
  • Patent number: 9982616
    Abstract: A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: May 29, 2018
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 9951731
    Abstract: A holder of a fuel injection valve is press-inserted to a housing of the fuel injection valve so as to be fixed to the housing, a cap of the fuel injection valve includes a notch portion for notching an annular portion, and is arranged in such a way that an inner circumference surface of the cap is faced to an outer circumference surface of a core of the fuel injection valve via a gap, and an electrode terminal of the fuel injection valve is connected to a terminal of a solenoid of the fuel injection valve via the notch portion of the cap.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: April 24, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akio Shingu, Norihisa Fukutomi, Manabu Hirai, Tsuyoshi Munezane
  • Patent number: 9897033
    Abstract: The present disclosure provides a fuel injector for an internal combustion engine with a fuel injector body having a valve chamber, a first conduit in fluid communication with the valve chamber for a first flow of fuel having a first pressure, and a second conduit in fluid communication with the valve chamber for a second flow of fuel having a second pressure. The fuel injector further includes a valve member configured to move between the first conduit and the second conduit. Additionally, an actuator of the fuel injector is configured to move the valve member during a fuel injection cycle. The fuel injector is configured to operate in at least three modes.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: February 20, 2018
    Assignee: CUMMINS INC.
    Inventors: Lester L. Peters, David L. Buchanan, Bradlee J. Stroia, William David Daniel, Rajesh K. Garg, Richard D. Thomas
  • Patent number: 9863383
    Abstract: A valve assembly for a fluid injection valve contains a hollow valve body which hydraulically connects a fluid inlet to an injection orifice and has a longitudinal axis. A valve needle is received in the valve body in an axially displaceable fashion for sealing the injection orifice in a closing position. An electromagnetic actuator assembly is provided for displacing the valve needle away from the closing position, the actuator assembly containing a movable armature and a pole piece which is positionally fixed relative to the valve body. A guide element is positionally fixed relative to the pole piece, has a first guide surface for axially guiding the armature and a second guide surface for axially guiding the valve needle.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: January 9, 2018
    Assignee: Continental Automotive GmbH
    Inventor: Ivano Izzo
  • Patent number: 9856772
    Abstract: A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module. The feed line is connected to the dosing module with a fluid connector. The fluid connector includes a body made from a first material that has a low heat conductivity and an insert made from a second material that has a greater heat conductivity than that of the first material. The insert extends from the body of the fluid connector into a storage chamber of the dosing module, and conducts heat from heated reductant in the feed line to the reductant stored in the storage chamber.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 2, 2018
    Assignee: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: John Heichelbech, James F. Burke, John Anthis, Andrew Myer
  • Patent number: 9812248
    Abstract: An ignition coil for delivering a spark-generating current to a spark plug includes a magnetically-permeable core; a primary winding disposed outward of the core; and a secondary winding radially surrounding the primary winding and inductively coupled to the primary winding, the secondary winding having a low-voltage end and a high-voltage end. The secondary winding includes a secondary winding first section proximal to the low-voltage end and having a first thickness. The secondary winding also includes a secondary winding second section proximal to the high-voltage end and having a second thickness that is less than the first thickness of the secondary winding first section.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: November 7, 2017
    Assignee: DELPHI TECHNOLOGIES, INC.
    Inventors: Albert A. Skinner, Colin Hamer, Harry O. Levers, Jr.
  • Patent number: 9759172
    Abstract: A fuel injector which includes an actuator having an electrical contact element, a plug, a fuel supply pipe, and an injection-molded housing part. The plug has a base body, an electrical connection element for an electrical connection with the electrical contact element of the actuator, and a rib which projects from the base body, the injection-molded housing part surrounding the electrical connection element of the plug and being injection-molded on the rib of the plug and the fuel supply pipe.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: September 12, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Wolff, Martin Scheffel, Sebastian Wieschollek, Axel Bormann, Johann Bayer
  • Patent number: 9702476
    Abstract: An injector having a tube attached to an armature. The injector includes a solenoid portion and a valve portion controlled by the solenoid portion. The armature includes a small diameter portion. Also included is a tube having a cavity, a first end of the tube is connected to the small diameter portion, and a ball is connected to a second end of the tube, such that the ball is selectively in contact with a valve seat. A hermetic weld connects the ball to the second end, and at least one heat affected zone is located in proximity to the hermetic weld. A coating substantially surrounds the heat affected zone and at least a portion of the ball, such that the coating prevents the heat affected zone from being exposed to diesel exhaust fluid and thus subsequent corrosion.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 11, 2017
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Robert Wayne McFarland
  • Patent number: 9689293
    Abstract: A reductant delivery unit reduces nitrogen oxide (NOx) emissions from a vehicle. The delivery unit includes a solenoid operated fluid injector having a fluid inlet and a fluid outlet. The inlet receives a source of reducing agent and the outlet communicates with an exhaust gas flow path of the vehicle so that the fluid injector controls injection of the reducing agent into the exhaust gas flow path. The fluid injector has an inlet tube for directing the reducing agent between the inlet and the outlet. A coil heater is integral with the fluid injector and is constructed and arranged, when energized, to inductively heat the inlet tube and thus at least a portion of the reducing agent so that an unheated volume, of the reducing agent in the inlet tube, which is adjacent to the fluid outlet, is less than about 100 mm3.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: June 27, 2017
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Willem Nicolaas van Vuuren, Stephen C Bugos, Michael J Hornby
  • Patent number: 9677522
    Abstract: The invention relates to a fuel injector (1) for an internal combustion engine. The fuel injector (1) is comprised of an injector body (5) with an injector tip (6). The injector tip (6) is used for the injection of fuel into the combustion chamber (4) of the internal combustion engine. For this reason, the injector tip (6) is designed so as to be at least partially extended into the combustion chamber (4). If the injector tip (6) is designed to be flush with the surface of the combustion chamber (4), the injector tip (6) is arranged so that it directly faces toward the combustion chamber (4). Furthermore, the injector tip (6) is at least partially coated with a first oxide layer (9). According to the invention, a catalytic second oxide coating (10) composed of cerium oxide (CeO2), praseodymium oxide (PrO2), zirconium oxide (ZrO2), or any bi-component combination thereof is applied on top of the first oxide coating (9).
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: June 13, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert Ukropec, Oliver Berkemeier, Clemens Maria Verpoort
  • Patent number: 9599083
    Abstract: In a fuel injection valve used in an internal combustion engine, fuel spray travel distance is shortened.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: March 21, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Eiji Ishii, Motoyuki Abe, Yoshihito Yasukawa, Kiyotaka Ogura, Hideharu Ehara, Tohru Ishikawa
  • Patent number: 9528482
    Abstract: Provided is an electromagnetic fuel injection valve in which in both operations of opening and closing a valve, a movable element is made to free run before a valve element starts to operate, and bounding motion of the movable element occurring at the time of the valve opening operation is reduced, thereby balancing improvement of responsiveness and improvement of stability of operation. There are equipped with: a first movable element 105, which is biased by a first spring 106 biasing in a valve closing direction, as a movable element which opens and closes a valve when being attracted by a magnetic core 109 of the electromagnetic fuel injection valve; and a second movable element 104 biased toward the magnetic core 109 by a second spring 112 biasing in a valve opening direction.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: December 27, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Motoyuki Abe, Ryo Kusakabe, Hideharu Ehara, Yoshihito Yasukawa
  • Patent number: 9518542
    Abstract: An injection valve is provided for injecting a medium, especially for injecting fuel into a combustion chamber, including: a housing having at least one spray orifice on a discharge side, a solenoid coil, a magneto armature, which is linearly movable by the solenoid coil, a linearly movable valve needle for opening and closing the spray orifice, a first stop on a side of the magneto armature facing away from the discharge side, and a second stop on a side of the magneto armature facing the discharge side, the magneto armature being linearly movable between the first stop and the second stop with respect to the valve needle, and a guide element which is joined to the valve needle, an outer area of the guide element serving as guide for the linear motion of the magneto armature, and the second stop being an integral part of the guide element.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: December 13, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Philipp Rogler, Martin Scheffel
  • Patent number: 9494117
    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 hollow valve needle axially movable in the cavity between open and closed positions to control fluid flow through the fluid outlet portion, wherein fluid can flow from the fluid inlet portion into the hollow valve needle; and an actuator assembly that actuates the valve needle and includes an axially movable armature. The valve needle includes first orifice(s) between the armature and the fluid outlet portion and second orifice(s) located adjacent or upstream of the armature. The first and second orifices allow fluid flow between the hollow valve needle and the cavity. A first gap defined between the valve needle and the armature allows fluid flow from the hollow valve needle via the second orifice into the first gap and further into the cavity.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 15, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Luigi Gargiulo, Marco Mechi, Nicola Iannaccone
  • Patent number: 9476376
    Abstract: A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: October 25, 2016
    Assignee: DENSO CORPORATION
    Inventor: Keita Imai
  • Patent number: 9441594
    Abstract: A valve actuator assembly includes a valve member movable between a first seat and a second seat. A spring member biases the valve member toward the first seat, and an actuator is positioned to move the valve member toward the second seat against the bias of the spring member when the actuator is energized. A controller is in control communication with the actuator and is configured to provide a first current to the actuator for an energizing period, identify a lack of return contact between the valve member and the first seat during a post-energizing period, and provide a second current to the actuator that is higher than the first current in response to the lack of return contact.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: September 13, 2016
    Assignee: Caterpillar Inc.
    Inventor: Sudhindra Keshav Ayanji
  • Patent number: 9399941
    Abstract: A system for exhaust gas treatment for internal combustion engines has a pump (1) for metered supply of a freezable substance, particularly a urea solution, to a supply device (23) introducing the substance into the exhaust gas flow. A compensation device (25) is provided as protection against damage to the system due to volume expansion when the substance freezes. The compensation device compensates for the volume expansion accompanying an increase of the fluid pressure when the substance freezes.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: July 26, 2016
    Assignee: HYDAC ELECTRONIC GMBH
    Inventors: Christian Groh, Frank Kattler
  • Patent number: 9399975
    Abstract: A fluid injector includes a valve structure movable in the passageway between a first position and a second position. The valve structure includes a hollow tube having a longitudinal axis and a valve member connected to an end of the tube by a weld, with a weld zone being defined inside of the tube generally adjacent to the weld. The tube has surfaces defining a through-hole that is disposed transversely with respect to the longitudinal axis of the tube. The through-hole permits the fluid to enter an interior of the tube. Corrosion prevention structure is disposed in the tube between the through-hole and the valve member to prevent the fluid in the tube from accessing the weld zone.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: July 26, 2016
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Michael J. Hornby, Carl F. Hayden
  • Patent number: 9387528
    Abstract: Provided is a nozzle incorporating a valve, which easily improves durability. The nozzle for spraying water to a targeted object, including a nozzle body provided with a passage of water and a valve arranged inside the passage of the nozzle body, wherein at least a part of an inner surface of the passage including a portion to have contact with the valve is coated by diamond-like carbon.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 12, 2016
    Assignee: PRIMETALS TECHNOLOGIES JAPAN, LTD.
    Inventors: Koichi Sakamoto, Yoichi Haraguchi, Yuji Ikemoto
  • Patent number: 9366355
    Abstract: An injector having a tube attached to an armature. The injector includes a solenoid portion and a valve portion controlled by the solenoid portion. The armature includes a small diameter portion. Also included is a tube having a cavity, a first end of the tube is connected to the small diameter portion, and a ball is connected to a second end of the tube, such that the ball is selectively in contact with a valve seat. A hermetic weld connects the ball to the second end, and at least one heat affected zone is located in proximity to the hermetic weld. A coating substantially surrounds the heat affected zone and at least a portion of the ball, such that the coating prevents the heat affected zone from being exposed to diesel exhaust fluid and thus subsequent corrosion.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: June 14, 2016
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Robert Wayne McFarland
  • Patent number: 9341154
    Abstract: A valve assembly includes a valve body, a movable valve needle, a movable armature, and an elastic member. The armature is axially moveable with respect to the needle so that, when the needle is in the closing position, the armature is movable from a first position further in the second direction to a second position against the bias of the elastic member. The elastic member has a plurality of beams, each beam having a first end and a second end which are axially and radially offset with respect to each other, and the armature is operable to reduce the axial offset between the first end and the second end when moving from the first to the second position.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: May 17, 2016
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Ileana Romeo, Matteo Soriani, Francesco Lenzi
  • Patent number: 9334842
    Abstract: A stationary core includes a holding hole that receives and holds a portion of the magnetic spring, which is located on a valve opening side. A solenoid device includes a magnetic yoke that extends in an axial direction and has an axial extent, which overlaps with an entire axial extent of the holding hole. The magnetic yoke has a predetermined portion, which reduces an amount of the magnetic flux that passes through the magnetic yoke in a radial direction in comparison to the rest of the magnetic yoke.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: May 10, 2016
    Assignee: DENSO CORPORATION
    Inventors: Keita Imai, Eiji Itoh, Hiroaki Nagatomo
  • Patent number: 9322374
    Abstract: The present invention relates to a fuel injector. The fuel injector is provided with an injection nozzle, an injection valve, and an electromagnetic actuator. The injection valve has a movable needle to adjust the flow of fuel through the injection nozzle. The electromagnetic actuator is adapted to move the needle between a closing position and an opening position of the injection valve and is provided with a movable plunger which is mechanically connected to the needle and has at least one feeding through hole for the passage of fuel towards the injection nozzle. The plunger is provided with a hydraulic type braking device, which is coupled to the feeding hole and hydraulically dissipates kinetic energy to slow down the opening stroke of the needle when the needle moves towards the opening position of the injection valve.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: April 26, 2016
    Assignee: MAGNETI MARELLI S.P.A.
    Inventors: Stefano Petrecchia, Massimo Lolli, Massimo Mattioli, Enrico Vezzani, Daniele De Vita
  • Patent number: 9291135
    Abstract: Provided is an electromagnetic fuel injection valve such that the collision faces of a chrome-coated movable element with respect to a stationary core and a valve body are flat, and change in the fuel injection quantity can be suppressed. The electromagnetic fuel injection valve is provided with a movable element having a cylindrical structure, and a valve body which is separated from the movable element and provided on the hollow portion side of the movable element so as to reciprocate. The movable element has a first collision face which collides with an end face of a stationary core, and a second collision face which collides with an end face of the valve body, said first collision face and second collision face coated with a chrome coating layer, and said chrome coating layer applied by disposing a positive electrode on the center axis of the movable element.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: March 22, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hisashi Ohwada, Tohru Ishikawa, Motoyuki Abe
  • Patent number: 9214684
    Abstract: The present invention provides a fuel control system and method, e.g., for a vehicle fuel cell system, which can efficiently supply hydrogen to a fuel cell stack and increase the efficiency of an ejector. For this purpose, the present invention provides a fuel control system having a series-connected multi-stage pressure control structure, in which an additional injector is provided in series between an injector for controlling the pressure of hydrogen supplied, a pressure control valve, or a pressure control actuator and a hydrogen recirculation ejector in a hydrogen supply passage, through which hydrogen is supplied from a hydrogen supply unit to a fuel cell stack, such that the pressure of hydrogen supplied is controlled in stages.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 15, 2015
    Assignee: Hyundai Motor Company
    Inventors: Bu Kil Kwon, Hyun Joon Lee, Ho June Bae
  • Patent number: 9194280
    Abstract: Systems and methods are provided for reducing coking residues on an injection device of an applied-ignition, direct injection engine. An example system comprises an injection device; an electric heating device integrated with the injection device; a catalytic coating on a surface of the injection device; and a controller suitable to initiate a cleaning mode of the injection device wherein the electric heating device raises the temperature of the injection device. Heating the injection device allows coking residues on the injection device to oxidize in the presence of the catalytic coating.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 24, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Oliver Berkemeier, Klemens Grieser, Kay Hohenboeken, Jens Wojahn
  • Patent number: 9181890
    Abstract: Methods of operating fuel injectors with intensified fuel storage. At least one storage volume is provided in the intensifier type fuel injector, with a check valve between the intensifier and the needle chamber and storage volume preventing loss of injection pressure while the intensifier plunger cylinder is refilling with fuel. Using the check valve to isolate the storage volume from the intensifier to reduce and control pressure spikes that effect injector operation. This provides very efficient injector operation, particularly at low engine loads, by eliminating the wasted energy of compressing, venting and recompressing fuel for injection and reducing and controlling pressure spikes that effect injector operation.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: November 10, 2015
    Assignee: Sturman Digital Systems, LLC
    Inventor: Oded Eddie Sturman
  • Patent number: 9163746
    Abstract: The invention relates to an electromagnetic valve, comprising a valve tappet, which is arranged in a valve housing and which can open or close a valve passage in the valve housing, a magnet armature, which is provided in order to actuate the valve tappet and through which a hole passes for accommodating the valve tappet, and a restoring spring, which acts on the valve tappet and the spring end of which facing away from the magnet armature is supported on a magnet core in the valve housing. For precise valve adjustment, an adjustment sleeve is fixed in the hole of the magnet armature, in which adjustment sleeve the valve tappet is fastened in some sections at the same time.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: October 20, 2015
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Christoph Voss, Christian Courth
  • Patent number: 9127629
    Abstract: A fuel injection device (100) includes a control body (40) provided with an injection hole (44), a nozzle needle (60) that opens or closes the injection hole (44), a pressure control chamber (53) controlling a movement of the nozzle needle (60), an inflow channel (52) through which high-pressure fuel is introduced to the pressure control chamber (53), an outflow channel (54) through which the fuel from the pressure control chamber (53) is discharged, and a floating plate (70) that opens or closes the inflow channel (52).
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: September 8, 2015
    Assignee: DENSO CORPORATION
    Inventors: Masato Yamada, Yoichi Kobane, Naofumi Adachi, Tsukasa Yamashita
  • Patent number: 9115678
    Abstract: Systems and methods for a permanently magnetized valve mechanism and/or valve mechanism seat for a fuel injector are disclosed. In one example approach, a fuel injector comprises a valve mechanism and a valve mechanism seat, wherein at least one of the valve mechanism and the valve mechanism seat is permanently magnetized; an injector driver circuit for actuating the valve mechanism; and a spring biasing the valve mechanism in a closed position against the valve mechanism seat. For example, a first amount of current may be supplied in a first direction to the injector driver to lift a permanently magnetized injector valve mechanism from the injector valve mechanism seat, and a second amount of current may be supplied in a second direction to the injector driver to close the permanently magnetized injector valve mechanism onto the injector valve mechanism seat.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: August 25, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Basmaji, Gopichandra Surnilla, Anand Gandhi
  • Publication number: 20150136878
    Abstract: A device for injecting fuel includes an electrodynamic drive having a movably situated coil, an inwardly opening needle which opens and closes injection holes on a valve seat, a connecting element which connects the needle to the movably situated coil, and a pressure chamber which is situated at the needle upstream from the valve seat and contains pressurized fuel.
    Type: Application
    Filed: December 15, 2014
    Publication date: May 21, 2015
    Inventors: Juergen GRANER, Martin MAIER, Guenther HOHL