Magnetically Actuated Switching Patents (Class 123/476)
  • Patent number: 12163807
    Abstract: A hybrid position sensor for determining a position of a hybrid target includes a conductive target and a magnet configuration which are rigidly connected and at least partially overlapping. The position sensor has a first transducer configured for generating a first signal induced by the conductive target and indicative for the position of the hybrid target; a second transducer, at least partially overlapping with the first transducer, and configured for generating a second signal induced by the magnet configuration and indicative for the position of the hybrid target; a processing device configured for receiving the first signal to determine a first position of the hybrid target and for receiving the second signal to determine a second position of the hybrid target and for determining reliability of the position sensor based on the determined first and second position.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: December 10, 2024
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Bruno Brajon, Gael Close, Lorenzo Lugani, Lionel Tombez
  • Patent number: 11391188
    Abstract: A method for verifying a CVVD location learning result may include performing a learning value verification control by confirming a position of a control shaft connected to a motor with a signal value of an auxiliary cam sensor for a rotation of a camshaft if a controller determines that a learning value acquired in a short duration and a long duration of a CVVD system is desired to be verified.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: July 19, 2022
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventor: Bon-Chang Koo
  • Patent number: 11137319
    Abstract: A method for updating a crank position tooth number in a crank position sensor signal obtained from a crankshaft position sensor of an engine of a vehicle includes: calculating, in platform software of an engine control unit (ECU), a pulse width of a crank position sensor signal, determining, in the platform software of the ECU, a forward rotation and a reverse rotation of an engine, and updating, in the platform software of the ECU, the crank position tooth number.
    Type: Grant
    Filed: November 4, 2018
    Date of Patent: October 5, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hyeokjun Kwon, Kyongduck Park, Jung-Suk Han
  • Patent number: 10808662
    Abstract: An inner side wall surface of a gap forming member, which is opposed to a flange outer wall surface of a flange of a needle, is slidable relative to the flange outer wall surface. Also, an outer side wall surface of the gap forming member, which is opposed to a stationary core inner wall surface of a stationary core, is slidable relative to the stationary core inner wall surface. The flange outer wall surface and the outer side wall surface are curved to project in a radially outer direction of a housing in a cross section thereof taken along an imaginary plane, which includes an axis of the housing.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: October 20, 2020
    Assignee: DENSO CORPORATION
    Inventors: Shinsuke Yamamoto, Shinobu Oikawa, Tomoji Matsukawa, Moriyasu Gotoh, Eiji Itoh
  • Patent number: 10570838
    Abstract: To provide sensing system layout structure of an internal combustion engine that enables increasing a degree of freedom in laying out a sensing system. In sensing system layout structure of an internal combustion engine provided with a sensing system for sensing rotation of a camshaft, the internal combustion engine is provided with a driving shaft rotated in synchronization with the camshaft, the sensing system is provided with a driving shaft rotation detecting sensor arranged opposite to a rotated portion on a side of the driving shaft, and rotation of the driving shaft is sensed by the driving shaft rotation detecting sensor.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: February 25, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuya Miyamura, Hodaka Mukohara, Tomokazu Kobayashi
  • Patent number: 10563603
    Abstract: A method of controlling an internal combustion engine having a plurality of cylinders, in particular a stationary internal combustion engine, wherein actuators of the internal combustion engine are actuable in crank angle-dependent relationship and/or sensor signals of the internal combustion engine can be ascertained in crank angle-dependent relationship, for compensation of a torsion of a crankshaft, by which torsion deviations in the crank angle occur between a twisted and an untwisted condition of the crankshaft, wherein for at least two of the cylinders a cylinder-individual value of the angle deviation is ascertained and the crank angle-dependent actuator or sensor signals are corrected in dependence on the detected angle deviation.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: February 18, 2020
    Assignee: INNIO JENBACHER GMBH & CO OG
    Inventors: Moritz Froehlich, Herbert Kopecek, Herbert Schaumberger, Nikolaus Spyra
  • Patent number: 10184860
    Abstract: Embodiments of the present disclosure relate to methods, system, and devices for synchronizing angular position information between a first and a second semiconductor chip used for engine management in an automobile is described. In accordance with one embodiment, a system for synchronizing angular position information between a first and a second semiconductor chip comprises the first and the second semiconductor chip and a digital real-time communication link connecting the first and the second semiconductor chip. The second semiconductor chip comprise a master angle estimation circuit, which is configured to estimate an angular position of the engine based on at least one angular position sensor signal. The first semiconductor chip comprises a slave angle estimation circuit, which is configured to estimate an angular position of the engine based on information concerning angular position received form the master angle estimation circuit via the communication link.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: January 22, 2019
    Assignee: Infineon Technologies AG
    Inventors: Christian Schweikert, Patrick Leteinturier
  • Patent number: 9790831
    Abstract: A valve solenoid includes a coil pot having an internal volume. A coil is positioned concentrically within the internal volume. An outer tube is positioned concentrically within the coil. A pole core is positioned concentrically within the outer tube. An armature includes an armature first portion positioned distal from the pole core and an armature second portion at least a portion of which is positioned concentrically within the outer tube. An inner tube is positioned concentrically within the channel defined by the armature such that the at least a portion of the armature second portion is positioned concentrically between the outer tube and the inner tube. An armature pin is fixedly coupled to the armature. A biasing member is positioned within the channel. A first end of the biasing member is coupled to the armature pin and a second end of the biasing member coupled to the pole core.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: October 17, 2017
    Assignee: CUMMINS EMISSION SOLUTIONS, INC.
    Inventor: Jakob Stang
  • Patent number: 9490776
    Abstract: A pulse width modulation controller (PWM) is disclosed which has a MOSFET (15) responsive to the error voltage (Verror) signal from the PWM amplifier (17) to detect a transient condition without delay ?Td. The MOSFET drain generates and applies a detection signal (S) to a delaying circuit (D). The delaying circuit (D) is responsive to the transient detection signal (S) to asynchronously output two latch signals (S1) and (S2) which on application to respective latch circuits (L1, L2) cause a change in conduction state of PMOS (8) and NMOS (9). This arrangement reduces voltage undershoot.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: November 8, 2016
    Assignee: ST-ERICSSON SA
    Inventor: Philippe Pignolo
  • Publication number: 20150000641
    Abstract: A method for injecting a gaseous medium, in particular a gaseous fuel, into an intake tract (1) of a gas engine or diesel-gas engine using an electromagnetically actuable gas valve (2). In order to increase the flow speed, the gaseous medium is injected into the intake tract (1) via at least two throttling points (3, 4) positioned in series.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Roland Mitter, Uwe Gordon
  • Publication number: 20140311456
    Abstract: The disclosure relates to a method for operating a fuel delivery device of an internal combustion engine, in which method an electromagnetic actuating device of a volume control valve is switched such as to set a delivery volume, wherein an intensity of an energy that is supplied to the electromagnetic actuating device for switching purposes, in particular of a current supplied to the electromagnetic actuating device and/or a level of a voltage applied to the electromagnetic actuating device, depends at least intermittently on a rotational speed of the internal combustion engine.
    Type: Application
    Filed: May 2, 2012
    Publication date: October 23, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Uwe Richter, Burkhard Hiller, Joerg Kuempel, Rainer Winkler, Heiko Roth
  • Publication number: 20140261334
    Abstract: The present invention relates to a fuel injector configuration that treats a dielectric fluid such as gasoline fuel with strong electric and, optionally, magnetic fields to form a homogeneous charged fuel or fuel/air mixture for combustion in an internal combustion engine. The electric field is supplied by a triboelectric dipole and the magnetic field is supplied by permanent magnets. Small charged fuel particles are produced and combust more readily than untreated particles. Fuel efficiency is increased and emissions are reduced.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 18, 2014
    Applicant: RONNELL COMPANY, INC.
    Inventor: Ronald A. Tamol
  • Publication number: 20140224222
    Abstract: The disclosure relates to a method for operating a fuel delivery device of an internal combustion engine, in which method an electromagnetic actuating device of a volume control valve is switched such as to set a delivery volume, wherein a control of the electromagnetic actuating device for moving an armature of the electromagnetic actuating device from a first position to a second position comprises at least three phases, wherein in a first phase a coil of the electromagnetic actuating device is permanently connected to a voltage, and wherein in a second phase the coil is periodically connected to the voltage with a first frequency and with a first duty factor, and wherein in a third phase the coil is periodically connected to the voltage with a second frequency and with a second duty factor.
    Type: Application
    Filed: May 2, 2012
    Publication date: August 14, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Uwe Richter, Joerg Kuempel
  • Patent number: 8640675
    Abstract: A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis for controlling opening/closing of a nozzle that injects fuel in an engine cylinder; the injector body houses a metering servovalve, provided with a control chamber and with an open/close element of a balanced type, axial sliding of which causes a variation in pressure in the control chamber; the metering servovalve comprises a valve body made of two pieces coaxially coupled to one another via a deformable ring, which defines also a gasket for guaranteeing fluid tightness between the two pieces and maintains in a fixed position a disk on which a calibrated restriction is made.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: February 4, 2014
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Raffaele Ricco, Sergio Stucchi, Onofrio De Michele
  • Patent number: 8418676
    Abstract: An apparatus for injecting fuel into a combustion chamber of an internal combustion engine. The apparatus includes a solid magnetostrictive material with a favored direction of magnetostrictive response formed into a shape with ends that are substantially parallel to each other and substantially perpendicular to the favored direction of magnetostrictive response. A fuel control valve element is located coaxial to the favored direction of magnetoelastic response of the magnetostrictive material, the element opening inwardly. A solenoid coil is located concentric with the magnetostrictive material and coaxial to the favored direction of magnetoelastic response, the solenoid coil adapted to excite the magnetostrictive material into mechanical motion.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 16, 2013
    Assignee: Great Plains Diesel Technologies, L.C.
    Inventor: Charles B. Bright
  • Patent number: 8230839
    Abstract: In a fuel injection valve used for an internal combustion engine, a valve closing lag time due to fluid resistance in a fuel path is shortened to decrease a minimum injection limit. More specifically, in the fuel injection valve in which an anchor is attracted to an end face part of a stationary core having a fuel path formed at a center part thereof by means of electromagnetic force, and in which a fuel injection hole is opened and closed by controlling a valve disc driven in conjunction with the anchor, there are provided a fuel reservoir part at a center part of an upper end face part of the anchor, a through hole extending axially in a fashion that an end part thereof is open to the fuel reservoir part, and a fuel path extending radially outward from the fuel reservoir part so that fuel is fed to a magnetic attraction gap between an upper end face part of the anchor and a lower end face part of the stationary core.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: July 31, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Hayatani, Motoyuki Abe, Toru Ishikawa, Eiichi Kubota, Takehiko Kowatari
  • Publication number: 20120037125
    Abstract: An apparatus for injecting fuel into a combustion chamber of an internal combustion engine. The apparatus includes a solid magnetostrictive material with a favored direction of magnetostrictive response formed into a shape with ends that are substantially parallel to each other and substantially perpendicular to the favored direction of magnetostrictive response. A fuel control valve element is located coaxial to the favored direction of magnetoelastic response of the magnetostrictive material, the element opening inwardly. A solenoid coil is located concentric with the magnetostrictive material and coaxial to the favored direction of magnetoelastic response, the solenoid coil adapted to excite the magnetostrictive material into mechanical motion. An excitation signal is provided within the solenoid coil consisting of a main current signal with a superposed alternating signal approximately the width of a hysteresis loop of the solid magnetostrictive material.
    Type: Application
    Filed: August 10, 2010
    Publication date: February 16, 2012
    Inventor: Charles B. Bright
  • Publication number: 20120037127
    Abstract: A programmable diesel fuel injector that increases frequency response and control precision over desired fuel flow rates throughout each injection event. All valve frequency and motional requirements are met by a compensated direct drive, which is enabled by the durable capability of a rare earth alloy to lengthen in a magnetic field. A continuously variable electrical input waveform is predetermined to result in the desired fuel injection rate shape. A magnetostrictive transducer converts voltage and current into continuously variable force and displacement of a master piston acting upon fuel within a closed chamber. A slave piston responds to the fuel pressure changes within the closed chamber and acts upon the spool of a spool valve to eject fuel.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Applicant: GREAT PLAINS DIESEL TECHNOLOGIES, L.C.
    Inventor: Charles B. Bright
  • Publication number: 20120037126
    Abstract: An apparatus for injecting fuel into a combustion chamber of an internal combustion engine. The apparatus includes a solid magnetostrictive material with a favored direction of magnetostrictive response formed into a shape with ends that are substantially parallel to each other and substantially perpendicular to the favored direction of magnetostrictive response. A fuel control valve element is located coaxial to the favored direction of magnetoelastic response of the magnetostrictive material, the element opening inwardly. A solenoid coil is located concentric with the magnetostrictive material and coaxial to the favored direction of magnetoelastic response, the solenoid coil adapted to excite the magnetostrictive material into mechanical motion.
    Type: Application
    Filed: August 10, 2010
    Publication date: February 16, 2012
    Inventor: Charles B. Bright
  • Publication number: 20120037128
    Abstract: The present invention relates to a fuel injector configuration that treats a dielectric fluid such as gasoline fuel with strong electric and, optionally, magnetic fields to form a homogeneous charged fuel or fuel/air mixture for combustion in an internal combustion engine. The electric field is supplied by a triboelectric dipole and the magnetic field is supplied by permanent magnets. Small charged fuel particles are produced and combust more readily than untreated particles. Fuel efficiency is increased and emissions are reduced.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Applicant: Ronnell Company, Inc.
    Inventor: Ronald A. Tamol
  • Patent number: 8061333
    Abstract: A circuit and a method for operating an inductive load, for example a fuel injector, in which rapid response of the load can be realized and, at the same time, small electrical power loss. A functional isolation of the rapid current buildup at the beginning of an energizing phase and a subsequent setting of the load current is provided, wherein the supply to the load takes place during the first operating phase from a “boost voltage” and during the second operating phase from the comparatively lower second operating voltage. In the second operating phase, a desired load current is set by suitably switching the second operating voltage on an off at the load. This intermittent operation causes lower switching losses, which are yet further reduced by the second operating voltage being matched, i.e. not being fixedly predetermined but being changed if necessary on the basis of monitoring of the load current.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: November 22, 2011
    Assignee: Continental Automotive GmbH
    Inventor: Stephan Bolz
  • Publication number: 20110239991
    Abstract: A fuel injector may include a housing, a poppet valve assembly, and an actuation assembly. The housing may define a longitudinal bore, a high pressure fuel duct in communication with the longitudinal bore and a valve seat including a valve seat surface and an aperture. The poppet valve assembly may include a stem and a valve head, be disposed within the longitudinal bore and be variably displaceable between a first position and a second position. In the first position, the valve head may abut the valve seat to seal the aperture. In the second position, the valve head may be displaced from the valve seat to open the aperture. The actuation assembly may operate to move the poppet valve assembly between the first position and the second position. The high pressure fuel duct may carry pressurized fuel that biases the poppet valve assembly to be in the first position.
    Type: Application
    Filed: April 1, 2010
    Publication date: October 6, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventor: ROBERT D. STRAUB
  • Patent number: 7938102
    Abstract: A diesel engine coupled to a transmission and having a fuel injector control system which among other things monitors the load on the engine by measuring the transmission line pressure, a higher pressure being indicative of a greater load. When the pressure is below a preset value and the engine is sufficiently warm, the normal injector firing sequence is altered by not actuating injectors at spaced intervals in the firing sequence. As the pressure and therefore the load decreases, the intervals between which injectors are not actuated are decreased so that in a given number of engine rotations there are fewer injector actuations and as a result of corresponding cylinders being idle, less fuel is supplied to the engine at lighter loads.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: May 10, 2011
    Assignee: William Sherry
    Inventor: William Joseph Sherry
  • Publication number: 20110106404
    Abstract: Described is a method for controlling a magnet valve for controlling the injection of fuel into an internal combustion engine, which method permits precise fuel metering in the no-load running or in the lower partial load range without changes to the hardware of the fuel injection system being necessary.
    Type: Application
    Filed: March 20, 2007
    Publication date: May 5, 2011
    Applicant: Robert Bosch GmbH
    Inventors: Matthias Boee, Helerson Kemmer, Anh-Tuan Hoang, Achim Deistler
  • Publication number: 20100294243
    Abstract: Disclosed is a fuel injection valve (4) comprising a control member (70) that is provided with a control passageway (114) which is arranged eccentrically relative to the housing axis (8) and can be opened and closed by a closure piece (96) with the aid of an actuator assembly (26) in order to obtain intermittent injections. The control member (70) is positioned by means of a centering pin (124) in order to define the circumferential position of the eccentric control passageway (114). The centering pin (124) is guided within a pocket bore of the control member (70) as well as within a bore of an intermediate plate (12), a cylindrical element (13), or a spacing sleeve (202). The actuator assembly (26) is designed as an electromagnetic actuator (80) in which the stop (98; 99) for limiting the lift of the pilot valve member is designed as a monolithic component of the intermediate plate (12) or as a flat stop disk (97) in a separate workpiece.
    Type: Application
    Filed: October 15, 2007
    Publication date: November 25, 2010
    Inventors: Marco Ganser, Ulrich Moser
  • Publication number: 20100263632
    Abstract: Even when a current waveform and a current value of a current which is supplied to an injector is changed in order to extend a dynamic range of the injector, fuel injection quantity precision is maintained and enhanced. A correction time for correcting an opening/closing delay of the aforementioned injector is variably set by a valve response delay time calculating unit 103 and a selector unit 106 in accordance with change of setting of the current waveform and the current value.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 21, 2010
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Takao MIYAKE, Masahiro Toyohara, Yasunaga Hamada
  • Publication number: 20100236526
    Abstract: The present invention relates to a common rail electronic control injector, which belongs to the electronic control fuel injection system technology. The injector includes an oil inlet joint, an oil inlet located at outside the oil inlet joint, an electromagnet device, a nozzle body, a needle valve, a valve seat and spray holes, wherein the electromagnet device includes a static core, an armature and a coil, wherein a working gap between the static core and the armature is H, the armature is moveably connected with the needle valve along an axial direction. The present invention further includes a compression spring applying a force to the needle valve, a force mechanism applying a force to the armature, and a block mechanism providing an axial anti-thrust while the armature is reset. The present invention has advantages of lower manufacturing cost, better reliability and smaller driving energy.
    Type: Application
    Filed: March 1, 2010
    Publication date: September 23, 2010
    Inventors: Yang Wang, Xiao Zhang, Tao Zhu, Shuaiqing Xu, Qian Xiong, Mingfa Yao, Qingyun Tian, Fang He, Zhong Zhang
  • Publication number: 20100206280
    Abstract: A vehicle-mounted engine control apparatus can accurately measure the resistance value of a label resistor arranged in an exhaust gas sensor for correcting characteristic variation thereof by using a reduced number of wires. An electric heater of the exhaust gas sensor, which is powered from a second power supply wire, as well as the label resistor and air fuel ratio measurement elements are connected to the apparatus which is powered from an on-vehicle battery through a first power supply wire. A power feed voltage of the apparatus is input to a multichannel AD converter through voltage dividing resistors, so that a positive end potential of the label resistor is measured alternatively. A negative end potential of the label resistor is input to the converter as a divided voltage thereof with a fixed resistor. The label resistance value is calculated from a fixed resistor current and a label resistor voltage.
    Type: Application
    Filed: September 8, 2009
    Publication date: August 19, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masahiko Nomura, Koji Hashimoto
  • Publication number: 20100147267
    Abstract: To provide a fuel injection system that can efficiently supply high pressure fuel to fuel injectors of an internal combustion engine, whose design and manufacture are made easy by simplifying its mechanical configuration, and which has excellent maintainability during repair and detachment.
    Type: Application
    Filed: January 19, 2007
    Publication date: June 17, 2010
    Inventors: Hiroaki Kato, Takao Iwasaki, Teruo Ohsawa, Hiroyuki Yano
  • Publication number: 20100126471
    Abstract: The present invention is provides a fuel injector having a hydraulically actuated injection pin, also referred to as an injector stem. In accordance with invention, the fuel injector provides for more efficient fuel combustion within internal combustion engines, such as vehicle engines. According to various embodiments of the invention, the fuel injector achieves efficient fuel combustion by (i) fast and responsive actuation, (ii) heating the fuel to a supercritical temperature, (iii) maintaining fuel at a supercritical pressure, and (iv) using a catalyst in the oxidization of the fuel. Some embodiments of the invention utilize a dual solenoid to actuate the fuel injector pin and a heating element to heat the fuel to a supercritical temperature.
    Type: Application
    Filed: November 4, 2009
    Publication date: May 27, 2010
    Inventors: Michael C. Cheiky, David L. Grottenthaler
  • Patent number: 7703709
    Abstract: An electromagnetic fuel injection valve in which a first resin-molded layer that is made of a synthetic resin, covers a solenoid section, and forms a coupler main portion that defines a coupler is covered by a second resin-molded layer different from that of the first resin-molded layer so that an outer face of the coupler main portion is exposed from a middle part up to the extremity of the coupler main portion. An endless engagement groove is provided on the outer periphery of the middle pad of the coupler main portion of the first resin-molded layer, the second resin-molded layer engaging with the endless engagement groove. An extending portion extending further outward than the engagement groove is formed in the second resin-molded layer so that the extending portion makes contact with an outer face of the coupler main portion when in a non-engaged state and covers the coupler main portion.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: April 27, 2010
    Assignee: Keihin Corporation
    Inventors: Akira Akabane, Hirokazu Tanuma
  • Publication number: 20100071665
    Abstract: The invention relates to an injector for injecting fuel into combustion chambers. According to the invention, a valve piston of a control valve is provided with low pressure on both faces thereof. The valve piston is arranged in a valve chamber hydraulically connected to a control chamber and is guided inside a sleeve received in the valve chamber. The valve chamber contains a spring supported on one end against the sleeve and on the other end on the valve piston such that the spring presses the valve piston onto a valve seat and the sleeve onto an opposing bottom surface. The valve piston diameter inside the sleeve corresponds to the effective valve piston diameter at the valve seat.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 25, 2010
    Inventors: Francois Rossignol, Stephan Amelang, Friedrich Howey, Olivier Charvet, Tony Dumont
  • Publication number: 20100065021
    Abstract: In a fuel injection valve used for an internal combustion engine, a valve closing lag time due to fluid resistance in a fuel path is shortened to decrease a minimum injection limit. More specifically, in the fuel injection valve in which an anchor is attracted to an end face part of a stationary core having a fuel path formed at a center part thereof by means of electromagnetic force, and in which a fuel injection hole is opened and closed by controlling a valve disc driven in conjunction with the anchor, there are provided a fuel reservoir part at a center part of an upper end face part of the anchor, a through hole extending axially in a fashion that an end part thereof is open to the fuel reservoir part, and a fuel path extending radially outward from the fuel reservoir part so that fuel is fed to a magnetic attraction gap between an upper end face part of the anchor and a lower end face part of the stationary core.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 18, 2010
    Applicant: HITACHI, LTD.
    Inventors: Masahiko Hayatani, Motoyuki Abe, Toru Ishikawa, Eiichi Kubota, Takehiko Kowatari
  • Publication number: 20100043757
    Abstract: A circuit and a method for operating an inductive load, for example a fuel injector, in which rapid response of the load can be realized and, at the same time, small electrical power loss. A functional isolation of the rapid current buildup at the beginning of an energizing phase and a subsequent setting of the load current is provided, wherein the supply to the load takes place during the first operating phase from a “boost voltage” and during the second operating phase from the comparatively lower second operating voltage. In the second operating phase, a desired load current is set by suitably switching the second operating voltage on an off at the load. This intermittent operation causes lower switching losses, which are yet further reduced by the second operating voltage being matched, i.e. not being fixedly predetermined but being changed if necessary on the basis of monitoring of the load current.
    Type: Application
    Filed: January 28, 2008
    Publication date: February 25, 2010
    Applicant: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Stephan Bolz
  • Patent number: 7644700
    Abstract: The fuel injection system has at least two electrically actuated control valves for controlling the fuel injection; the control valves are each connected via electric lines to an electric control unit. In the fuel injection system, terminal elements for connection of the electric lines are provided. For a first of the control valves, a structural element is provided, on which the terminal elements for all the control valves are disposed, and which can be secured to a housing part of the fuel injection system. At least one electric connecting line from the terminal elements to the second control valve disposed inside a housing part of the fuel injection system is integrated with the structural element.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: January 12, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Francois Rossignol, Olivier Charvet
  • Publication number: 20090308354
    Abstract: The invention relates to an injector for injecting fuel into a combustion chamber of an internal combustion engine. According to the invention, an injection valve member, which opens or closes at least one injection opening, is controlled by a control valve. The control valve opens or closes a connection from a control chamber into a fuel return line by the positioning of a closing element in a seat or by the opening of the seat. A bore is embodied in the closing element, and a pin is received in the bore. The diameter of the bore essentially corresponds to the diameter of the seat. The pin is supported on one side against a pressure rod, against a spring seat, or against the injector housing.
    Type: Application
    Filed: March 19, 2007
    Publication date: December 17, 2009
    Inventor: Nadja Eisenmenger
  • Publication number: 20090301441
    Abstract: A movable portion is movable from a closed position, in which the movable portion is in contact with a valve element, to an opened position so as to supply fuel from a fuel portion to a compression chamber through a fuel passage. A drive control unit supplies of a small driving current, which is sufficient to maintain the movable portion at the closed position, to a coil portion so as to move the movable portion from the opened position to the closed position. The drive control unit switches the supply of the small driving current to supply of the large driving current in the course of the movement of the movable portion to the closed position by supplying the small driving current.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 10, 2009
    Applicant: DENSO CORPORATION
    Inventors: Jun Hasegawa, Masahiro Yokoi, Yoshihito Suzuki, Kaoru Oda
  • Publication number: 20090281707
    Abstract: An ECU estimates a variation amount of fuel which is actually suctioned by a fuel pump based on a fuel pressure in a common rail. Even though the fuel pressure in the common rail deviates from a target fuel pressure, when the estimated variation amount of fuel is substantially zero, an energization quantity to a solenoid of a flow control valve is compulsorily reduced.
    Type: Application
    Filed: April 7, 2009
    Publication date: November 12, 2009
    Applicant: DENSO CORPORATION
    Inventor: Ryo KATSURA
  • Publication number: 20090241908
    Abstract: A controlling apparatus of a variable capacity type fuel pump, for avoiding noises caused due to drive of the fuel pump and noises caused due to drive of injectors from overlapping or duplicating with each other in the timing thereof, wherein signals for driving the pump reduced, or the timing thereof is shifted forward/backward, within a specific timing where the o overlapping can be prospected, or a specific timing where they are determined to overlap or duplicate with each other.
    Type: Application
    Filed: June 5, 2009
    Publication date: October 1, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Kenichiro TOKUO, Satoshi Usui, Hiroyuki Yamada
  • Publication number: 20090229578
    Abstract: A control device enabling integrated operation of vehicle electric system and engine electric solenoid fuel injection and ignition systems includes a timing circuit for driving a pulse generator to generate a pulse signal. The pulse generated by the pulse generator is limited and then phase-shifted and amplified. The pulse signal for switching operation is then loaded into a positive terminal of a power supply on a motor vehicle by another power device. The control device may further include an automatic distinguishing unit for setting the control device to start and stop working at preset voltages. The transient pulse generated by the control device at engine start enables the spark plug to be instantaneously ignited, and may be stably maintained at a constant transient voltage value to stably supply transient voltage and current to the spark plug and the fuel injector needle valve of the motor vehicle fuel injection system.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 17, 2009
    Inventor: Ming Hui LIN
  • Publication number: 20090229577
    Abstract: The fuel injection system has at least two electrically actuated control valves for controlling the fuel injection; the control valves are each connected via electric lines to an electric control unit. In the fuel injection system, terminal elements for connection of the electric lines are provided. For a first of the control valves, a structural element is provided, on which the terminal elements for all the control valves are disposed, and which can be secured to a housing part of the fuel injection system. At least one electric connecting line from the terminal elements to the second control valve disposed inside a housing part of the fuel injection system is integrated with the structural element.
    Type: Application
    Filed: November 22, 2005
    Publication date: September 17, 2009
    Inventors: Francois Rossignol, Olivier Charvet
  • Publication number: 20090205614
    Abstract: In a device for the injection of fuel into the combustion chamber of an internal combustion engine, including an injector nozzle (5) and a nozzle needle (7) which is guided in a longitudinally displaceable manner within the injector nozzle (5) and, for the control of its opening and closing movements, is capable of being pressurized in the axial direction by the pressure prevailing in a control chamber (12) filled with fuel, wherein the control chamber (12) communicates with a supply line (14) and a discharge line (19), and a magnetic control valve (16) is arranged in at least one of the two lines, said magnetic control valve comprising a valve-closing member (25) coupled with an actuating member (21) and pressable against a valve seat (26), and said actuating member (21) being separated from the closing member (25) and the valve seat (26) by a bellows seal (28), the valve-closing member is configured as a valve ball and pressable against a conical valve seat (26).
    Type: Application
    Filed: July 29, 2005
    Publication date: August 20, 2009
    Applicant: Robert Bosch GmbH
    Inventors: Jaroslav Hlousek, Franz Guggenbichler, Helmut Giessauf, Joachim Lackner, Bernd Kogler
  • Publication number: 20090165750
    Abstract: A fuel injection valve is provided that includes an electromagnetic actuator (A1) that moves a valve body (10) in an inwardly-opening direction, and a magnetostrictive actuator (A2) that, by passing current therethrough, elongates a movable part assembly (43) extending from the valve body (10) to a movable core (24) of the electromagnetic actuator (A1), wherein the magnetostrictive actuator (A2) is formed from a solid magnetostrictive element (15) provided between the valve body (10) and the movable core (24) of the electromagnetic actuator (A1) so as to couple the valve body (10) and the movable core (24), a preload spring (13) provided between the valve body (10) and the movable core (24) so as to apply a compressive preload in the axial direction of the valve body (10) to the magnetostrictive element (15), and a second coil (42) mounted on a valve housing (H) housing the valve body (10), the movable core (24), the magnetostrictive element (15), and the preload spring (13), the second coil (42) elongating t
    Type: Application
    Filed: February 2, 2007
    Publication date: July 2, 2009
    Applicant: Keihin Corporation
    Inventors: Tadao Tsuchiya, Koji Sonoda, Manabu Shoji
  • Publication number: 20090139491
    Abstract: A solenoid assembly is disclosed. The solenoid assembly has a housing having a cavity disposed therein. The solenoid assembly also has a unitary stator having a plurality of separated portions. The separated portions are held together by at least one lip located on an outer periphery of the stator. The stator is sized to fit within the cavity disposed in the housing.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 4, 2009
    Inventors: Mandar A. Joshi, Harish Krishnaswamy, Dana R. Coldren, Nadeem N. Bunni
  • Patent number: 7536250
    Abstract: A device (1) for determining the position of an internal combustion engine, includes an incremental-type sensor (2) having a rotary part (8) which is connected to the rotary body, and a fixed part (6) which is provided with first elements for detecting the rotation of an increment between the mobile part (8) and the fixed part (6), second elements for detecting the direction of rotation between the mobile part (8) and the fixed part (6), and analysis elements which are connected to the first elements and the second elements and are used to determine the angular position of the rotary body in relation to the reference position. The device also includes engine controlling elements (4) which are connected to the analysis elements (12) of the sensor (2), and the sensor (2) is permanently electrically (34) fed in the device.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: May 19, 2009
    Assignees: Continental Automotive France, Bayerische Motoren Werke AG
    Inventors: Markus Eisenkölbl, Willem Johan Anton Teulings, Frédéric Galtier
  • Patent number: 7527039
    Abstract: A fuel injection control apparatus of an internal combustion engine is disclosed. This apparatus is provided with a crank angle detector that includes a signal rotor having a number of tooth portions and a toothless portion. The crank angle detector outputs a first signal corresponding to each tooth portion and a second signal corresponding to the toothless portion. A control computer selectively carries out a first calculation process for calculating the timing of fuel injection using the first signal and a second calculation process for calculating the timing of fuel injection using the second signal. When carrying out the second calculation process, the control computer calculates the timing of fuel injection using the length of time gained by dividing the length of time gained through detection of the toothless portion by the number of tooth portions which can be aligned in the toothless portion.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: May 5, 2009
    Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiya Yamamura, Yoshiyasu Ito
  • Publication number: 20090107463
    Abstract: A valve element is movable in a main body for opening and closing the nozzle hole. A pressure control chamber is formed at an end of the valve element and configured to receive high-pressure fuel to bias the valve element so as to close a nozzle hole. A first communication passage communicates the pressure control chamber with a low pressure side. An accommodating chamber is located downstream of the first communication passage and acommodates a valve member. A low-pressure opening is for exhausting fuel from the accommodating chamber. The valve member has a valve portion to control fuel flowing from the pressure control chamber to the low pressure side. The accommodating chamber and the low-pressure opening therebetween has a passage, which defines a throttle portion.
    Type: Application
    Filed: September 2, 2008
    Publication date: April 30, 2009
    Applicant: DENSO CORPORATION
    Inventor: Kazufumi SERIZAWA
  • Publication number: 20090020101
    Abstract: A fuel injector of a fuel injecting device that is known is provided with an intensifier piston, which intensifies the pressure of the liquid supplied to the fuel injector from a rail pressure to a higher pressure by hydraulic transmission. The disadvantage is that this type of pressure intensification is very expensive and complicated. In the device according to the present invention, the pressure intensification is simpler and more economical. The present invention provides for at least one electromagnetic pressure intensifier to be provided on at least one fuel injector.
    Type: Application
    Filed: February 21, 2006
    Publication date: January 22, 2009
    Inventors: Andreas Posselt, Susanne Friedle, Andreas Gutscher
  • Publication number: 20090007887
    Abstract: A fuel injection valve is provided with a main body and a valve member. The main body has a fuel passage and a fuel injection opening formed at the downstream-end of the fuel passage. The valve member is provided in the fuel passage. The valve member is configured to move between a first position in which the valve member closes the fuel injection opening and a second position in which the valve member opens the fuel injection opening. A hardened layer is formed on abutment surfaces of the valve member and the main body that abut with each other. The hardness of this hardened layer is lower in its surface side than in its bottom side. According to this structure, the stress generated inside the hardened layer is suppressed, and breakage and detachment of the hardened layer are prevented.
    Type: Application
    Filed: June 30, 2008
    Publication date: January 8, 2009
    Applicant: Aisan Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki FUJIMOTO, Hiroshi KAWAZOE
  • Publication number: 20090007886
    Abstract: In an electromagnetic fuel injection valve in which a first resin-molded layer that is made of a synthetic resin, covers a solenoid section, and forms a coupler main portion that defines a framework of a power-receiving coupler is covered by a second resin-molded layer made of a synthetic resin that is different from that of the first resin-molded layer so that an outer face of the coupler main portion is exposed from a middle part up to the extremity of the coupler main portion, an endless engagement groove (45) is provided on the outer periphery of the middle part of the coupler main portion (40a) of the first resin-molded layer (41), the second resin-molded layer (42) engaging with the endless engagement groove (45), and an extending portion (42b) extending further outward than the engagement groove (45) is formed in the second resin-molded layer (42) so that the extending portion (42b) makes contact with an outer face of the coupler main portion (40a) when in a non-engaged state and covers the coupler mai
    Type: Application
    Filed: September 22, 2005
    Publication date: January 8, 2009
    Inventors: Akira Akabane, Hirokazu Tanuma