Having A Specific Ignition Coil Patents (Class 123/634)
  • Patent number: 10338130
    Abstract: A spark detector indicates the presence of a spark by analyzing sound waves generated when an electrical spark is produced from an electrical spark generator located on an igniter rod. The spark detector includes an acoustic sensor that is in communication with the igniter rod to determine the time for the spark sound wave to travel through the igniter rod to the acoustic sensor. If a spark is not detected, the spark detector may output a signal indicating at least one of (i) the spark was not detected, (ii) to replace the electrical spark generator immediately, or (iii) replace the electrical spark generator soon such as at the next scheduled maintenance. Furthermore, the spark detector may be calibrated based on current temperature of the igniter rod based upon time of propagation of a pulse sound wave, generated by a pulse-echo generator, to reflect off an end of the igniter rod.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: July 2, 2019
    Assignee: Chentronics, LLC
    Inventors: Alex Chernyshov, Reichl B. Haskell, Marko Spiegel, Andrew Strong
  • Patent number: 10291000
    Abstract: An ignition apparatus includes a spark plug and an ignition coil. The spark plug has a plug terminal protruding proximalward from an insulator. The ignition coil includes a coil main body, which includes a primary coil and a secondary coil, and a helical spring that electrically connects the secondary coil and the plug terminal. The plug terminal is made of a material that is both electrically conductive and magnetic. The plug terminal includes a terminal main body, which has an outer diameter greater than an inner diameter of the spring, and a terminal extension portion that has an outer diameter less than the inner diameter of the spring and extends proximalward from the terminal main body. A distal end portion of the spring abuts the terminal main body. The terminal extension portion is inserted and arranged in the spring. Between an outer circumferential surface of the terminal extension portion and an inner circumferential surface of the spring, there is interposed an insulating member.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: May 14, 2019
    Assignee: DENSO CORPORATION
    Inventors: Akimitsu Sugiura, Kenji Hattori, Shunichi Takeda, Kaori Doi, Ryota Wakasugi
  • Patent number: 10263396
    Abstract: A problem exists in that, as a loop through which high frequency energy conducts is long, it is difficult to suppress noise generated from the loop and suppress an influence thereof on peripheral equipment. A high frequency discharge ignition device according to this invention is a structure integrally constituted by a second housing into which a high frequency energy supply circuit is built and a first housing into which an output circuit is built, wherein the high frequency energy supply circuit is connected to the output circuit by a connection terminal so as to be connected to a spark plug which is mounted on a grounded object. Further, the high frequency energy supply circuit is grounded via a conducting member disposed in a through hole provided in the first housing.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: April 16, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaaki Tanaka, Yasuyuki Shimizu
  • Patent number: 10164598
    Abstract: A power filter arrangement includes a toroidal package having a toroid and a resistive element. The resistive element is disposed about an outer circumference of the toroid and is joined to the toroid. The resistive element is wound about the toroid. The resistive element is provided with a first resistive pattern having an even number of total turns.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: December 25, 2018
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Huazhen Chai, Eric A. Carter, John Huss
  • Patent number: 10064623
    Abstract: Some embodiments relate to a clip comprising: a base portion; first and second opposed arms coupled to the base portion; and first and second opposed jaws coupled to the respective first and second arms, the first and second opposed jaws each having an inwardly extending portion that extends towards the base portion; wherein at least the base portion is formed of a shape memory alloy tending to force the first and second arms toward each other when a temperature of the base portion meets or exceeds a transformation temperature of the base portion.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: September 4, 2018
    Assignees: Globetek 2000 Pty Ltd, The Federal State Autonomous Educational Institution of the Higher Professional Education “National University of Science and Technology”
    Inventors: Mikhail Soutorine, Artem Nikolaevich Chemov-Haraev, Sergei Dimitrievich Prokoshin, Elena Prokopievna Ryklina, Irina Yurievna Khmelvskaya, Andrey Victorovich Korotitskiy, Rouslan Valereevich Ipatkin
  • Patent number: 10036363
    Abstract: In an ignition coil for an internal combustion engine, a coil case includes a housing section and a high-voltage tower section. The housing section houses a primary coil, a secondary coil, a center core, and an outer peripheral core, and is arranged outside a plug hole in a cylinder of an internal combustion engine in which an ignition plug is arranged. The high-voltage tower section protrudes from the housing section, and is disposed within the plug hole. A pole joint is disposed within the plug hole, and is mounted to the high-voltage tower section via a seal rubber. The pole joint is provided with a rib that protrudes to an outer periphery and faces an inner peripheral surface of the plug hole. The inner peripheral side of the rib faces the high-voltage tower section via the seal rubber.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: July 31, 2018
    Assignee: DENSO CORPORATION
    Inventor: Masafuyu Sano
  • Patent number: 10012203
    Abstract: In an ignition coil for an internal combustion engine, a resistor is disposed in a tower insertion hole of a high-voltage tower section. A coil spring is inserted in the tower insertion hole. An inner diameter of a proximal end side portion of the tower insertion hole is larger than an outer diameter of a maximum outer diameter portion of the resistor. An inner diameter of the distal end side portion of the tower insertion hole is larger than an outer diameter of a proximal end side portion of the coil spring, and is smaller than the outer diameter of the maximum outer diameter portion. In a state where the coil spring is pulled out from the tower insertion hole, the maximum outer diameter portion is restrained by the distal end side portion of the tower insertion hole, and a gap is formed between the resistor and a high-voltage cap.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: July 3, 2018
    Assignee: DENSO CORPORATION
    Inventors: Masafuyu Sano, Junichi Wada
  • Patent number: 10008830
    Abstract: An extender for connecting a high-voltage source to a spark plug has a spring adapted to electrically connect with the high-voltage source and the spark plug, a tube having said spring positioned within an interior passageway thereof, and a boot affixed over an exterior of the tube. The boot is formed of a material having a rigidity less than a rigidity of a material of the tube. The boot has a first end adapted to be connected with the high-voltage source and a second end adapted to be connected to the spark plug such that the spring is in direct electrical connection with the spark plug and the high-voltage source. The tube has one end that is spaced inwardly of the first end of the boot and an opposite end of the spaced inwardly of the second end of the boot.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: June 26, 2018
    Assignee: MARSHALL ELECTRIC CORP.
    Inventors: Thomas C. Marrs, Donald Recupido
  • Patent number: 9966928
    Abstract: There is provided a signal splitter comprising at least four outputs and a plurality of step-up transformers, wherein each step-up transformer has less than seven turns. A first step-up transformer is connected to a common port and positioned between the input and second and third step-up transformers. The first step-up transformer has a different number of turns to the second and third step-up transformers.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: May 8, 2018
    Assignee: Technetix B.V.
    Inventor: Martien Rijssemus
  • Patent number: 9947463
    Abstract: An ignition coil for internal combustion engines is provided which includes magnetically coupled primary and secondary coils, a case, a high-voltage tower, a resistor, and resin packed in the case. The case has the primary coil and the secondary coil disposed therein. The high-voltage tower is attached to a tower mount formed on a front end of the case. The resistor is embedded in the high-voltage tower with a front and a base end surfaces thereof exposed from the high-voltage tower. The resin is packed in the case to seal the primary coil and the secondary coil. This structure enhances the productivity of an assembly of the high-voltage tower and the resistor.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: April 17, 2018
    Assignee: DENSO CORPORATION
    Inventor: Katsunori Akimoto
  • Patent number: 9938952
    Abstract: An ignition coil for internal combustion engines is provided which includes a primary and a secondary coils magnetically coupled with each other, a case, a resistor, and a resinous filler. The case includes a case body in which the primary and secondary coils are disposed and a tubular high-voltage tower extending from the case body toward a head of the ignition coil. The resistor 3 is press-fitted into the high-voltage tower and electrically connected to the secondary coil. The resinous filler is packed in the case body to hermetically seal the primary coil and the secondary coil. The resistor includes a resinous coating which covers an outer circumference of the resistor and is press-fit in the high-voltage tower through the resinous coating. This facilitates hermetically sealing a gap between the resistor body and the case and ensures the stability of the sealing.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: April 10, 2018
    Assignee: DENSO CORPORATION
    Inventor: Katsunori Akimoto
  • Patent number: 9941769
    Abstract: A reluctance motor includes a ferromagnetic seat, a non-magnetic sleeve sleeved on the seat, a magnetizing coil wound around the sleeve, a magnetic core surrounding the sleeve, a ferromagnetic cover covering the sleeve, and a ferromagnetic pseudo piston partly disposed in the sleeve and axially movable relative to the sleeve.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: April 10, 2018
    Inventors: Fu-Tzu Hsu, Chieh-Sen Tu
  • Patent number: 9435314
    Abstract: An ignition coil assembly with extension for electrical connection of an ignition plug of an endothermic engine, wherein the extension (10) comprises an essentially tubular hollow body (11) having a first end area (10.1) engaged, in a detachable manner, on the free end of an ignition plug, and electrical connections (10.26, 20, 10.36), provided for the transmission of high voltage electrical energy between an electrical/electronic member of the ignition coil and the ignition plug. The electrical connections (10.26, 20, 10.36) comprise at least one filter (20) of the high frequency electromagnetic disturbances produced by the operation of the coil, wherein a winding of electrically conductive wire surrounds a central core (20.3) in ferromagnetic material dispersed in a polymer base.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: September 6, 2016
    Assignee: ELDOR CORPORATION S.P.A.
    Inventors: Stefano Silva, Pasquale Forte
  • Patent number: 9366221
    Abstract: The invention relates to a corona ignition device for igniting fuel in a combustion chamber of an engine by means of a corona discharge, said corona ignition device comprising an insulator, a center electrode, which is held in the insulator, a housing, in which the insulator is held, and coil turns, which are disposed in a cylindrical main part of the housing and are connected to the center electrode. According to an aspect of this disclosure, the housing widens on the side of the main part remote from the insulator and further coil turns are disposed there, in a wider housing part.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: June 14, 2016
    Assignee: BorgWarner Ludwigsburg GmbH
    Inventors: Timo Stifel, Andreas Ehrhardt
  • Patent number: 9341371
    Abstract: The invention relates to corona ignition device comprising a housing, an insulator surrounded by the housing, an inner conductor leading through the insulator to an ignition tip, and a coil connected to the inner conductor, the coil comprising an elongate coil former and a winding formed from wire wound onto the coil former, wherein the coil former comprises at least one indentation filled with adhesive, and the wire crosses the indention such that wire portions which are arranged above the indentation are adhesively bonded to the coil former by means of the adhesive arranged in the indentation.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: May 17, 2016
    Assignee: BorgWarner Ludwigsburg GmbH
    Inventor: Timo Stifel
  • Patent number: 9271422
    Abstract: A drive apparatus includes a power module, a connector and a heat sink. The connector is used for electric connection to an external side and has a flange, which is formed on its peripheral wall. The heat sink is formed to have a module holding part for holding the power module and a fitting hole for fitting with the flange and has a connector holding part for holding a connector. The flange is formed along a first surface, which faces the connector holding part of the peripheral wall, and side surfaces, which are formed on both sides of the first surface. Thus, water droplets are prevented from entering into a control unit through a clearance between the connector and the heat sink without adding other members such as a water preventing cover.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 23, 2016
    Assignee: DENSO CORPORATION
    Inventor: Masashi Yamasaki
  • Publication number: 20150136098
    Abstract: The following invention relates to an ignition coil assembly for an ignition system comprising an ignition coil where said assembly has a main axis and is configured for insertion into and/or removal out of a well associated with an internal combustion engine, wherein the assembly comprises an elongated extension body made of flexible material, said extension body comprising an upper end portion and a lower end portion wherein the extension body is arranged to be transversally bendable in relation to the main axis so that the upper end portion and the lower end portion may assume an angle (?) in relation to each other.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 21, 2015
    Applicant: SEM AB
    Inventors: Lars-Ake Andersson, Jorgen Bengtsson, Bert Gustafsson
  • Patent number: 9022010
    Abstract: An ignition system is provided, which can restrict decreasing of constant-voltage duration of a spark plug and effectively prevents the occurrence of an accidental fire in an engine. A typical ignition system includes a secondary coil having one end connected to a positive side of a battery via a low-voltage side path and the other end connected to a center electrode via a connecting path which connects the secondary coil and the spark plug. A constant-voltage path having a grounded end is connected to the connecting path. A block diode is arranged between the secondary coil and a point where the constant-voltage path is connected with the connecting path. A Zener diode is disposed within the constant-voltage path. Each anode of the block diode and the Zener diode is mutually connected.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: May 5, 2015
    Assignee: Denso Corporation
    Inventors: Masamichi Shibata, Yuji Kajita, Atsuya Mizutani, Koichi Hattori, Yasuomi Imanaka
  • Patent number: 9010306
    Abstract: In an ignition coil for an internal combustion engine, a column section and a notched section are provided in a side wall section of a case section of the ignition coil. A ventilation opening is formed in an up/down direction in the column section. The ventilation opening communicates with a ventilation passage formed between a sealing rubber and the case section and is open in an upper end section. A cover surrounding the column section and covering the upper end section is provided in the side wall section. A sealing section sealing the notched section is provided in the cover. The ignition coil has a filler resin that fills a space within the case section being in continuous contact with the sealing section and the side wall section and fixing the cover to the side wall section.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: April 21, 2015
    Assignees: Denso Corporation, Honda Motor Co., Ltd.
    Inventors: Kazuhide Kawai, Katsunori Akimoto, Gakuji Moriya, Makoto Kurahashi
  • Patent number: 8991371
    Abstract: An ignition coil for an internal combustion engine includes a magnetically-permeable core extending along a core longitudinal axis, the core having a pair of end surfaces on axially-opposite ends thereof. The ignition coil also includes a primary winding disposed outward of the core, a secondary winding disposed outward of the primary winding, and a structure comprising magnetically-permeable steel laminations having a base and a pair of legs, the structure defining a magnetic return path. The core is disposed between the pair of legs such that the core longitudinal axis extends through the legs and the end surfaces face toward the legs and at least one of the end surfaces of the core is spaced apart from a respective one of the legs to define an air gap. The structure is over-molded with an over-molding material such that the over-molding material fills at least a portion of the air gap.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: March 31, 2015
    Assignee: Delphi Technologies, Inc.
    Inventors: Albert A. Skinner, Harry O. Levers, Andre V. Scaff
  • Patent number: 8939133
    Abstract: An outboard motor includes an engine and a casing. The engine includes a cylinder unit, ahead cover and an ignition coil device. The cylinder unit is made of metal. The head cover is made of resin and is attached to the cylinder unit. The ignition coil device is attached to the head cover. The casing is made of resin and covers the engine. The coil ignition device includes a radiated noise reducer portion. The radiated noise reducer portion is configured to reduce noise that is radiated from the ignition coil device.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: January 27, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazuyuki Agemura
  • Patent number: 8939132
    Abstract: Ignition is performed in such a way that a bias voltage is applied to a first electrode of an ignition plug and a current detection device detects a current that flows in the first electrode, that based on the value of the detected current, a smolder level detection device detects the level of a smolder produced in the ignition plug, and that a control device controls, based on the detected smolder level, at least one of the timing of ignition, the number of ignition events per power stroke of an internal combustion engine, and the amount of energy accumulated in an ignition coil device.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: January 27, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kimihiko Tanaya
  • Patent number: 8925533
    Abstract: An ignition coil for the internal combustion engine has a cylinder portion and a head portion. A pillar portion that forms a part of a ventilation passage that communicates inside and outside of a plug hole via a sealing member, and a cover portion that covers the pillar portion without blockading an upper opening of a ventilation opening of the pillar portion are formed on a side of the head portion.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: January 6, 2015
    Assignee: Denso Corporation
    Inventors: Kengo Nakao, Kazuhide Kawai, Katsunori Akimoto
  • Patent number: 8922324
    Abstract: An ignition coil for internal combustion engine includes: a center core disposed on an inner side of a primary coil and a secondary coil and a side core disposed on an outer side of the primary and secondary coils whose one end face abuts on one end face of the center core and the other end face abuts on the other end face of the center core via a magnet. The side core is formed of a plurality of side core portions obtained by dividing laminated magnetic steel plates at different positions in a longitudinal direction thereof and has a superimposed portion in which the magnetic steel plates of the adjacent side core portions mutually superimpose between the different positions in the longitudinal direction. It thus becomes possible to provide an ignition coil for internal combustion engine capable of suppressing an increase of magnetic circuit resistance markedly without deteriorating assembly workability.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Idogawa, Takeshi Shimizu, Shuichi Tamura, Koji Takaba
  • Publication number: 20140345582
    Abstract: An ignition coil for an internal combustion engine is provided with a coil section that includes a primary coil and a secondary coil, and a connector case section. The primary coil is formed by winding a primary electric wire about the outer periphery of a primary spool made of a resin. The connector case section is provided with terminals each formed of a conductor and arranged from a fitting hole of the connector case section to a connector portion. In each terminal, an insertion portion arranged in the fitting hole is formed with an insertion slit in a fitting direction in which the coil section is fitted to the connector case section. Each winding end portion is drawn out substantially along a winding direction of the primary electric wire and inserted into the insertion slit in the fitting direction.
    Type: Application
    Filed: October 4, 2012
    Publication date: November 27, 2014
    Inventors: Yuhki Yamauchi, Shouichi Takeyama
  • Patent number: 8854169
    Abstract: In a spark plug ignition assembly for a spark plug, an ignition coil assembly has a steel laminated core, said core having a first core portion and a second core portion, and a primary winding around the first core portion and a secondary winding around the primary winding. A spark plug connecting member is provided for connecting the coil assembly to the spark plug. At least one of the first and second core portions has a slot therein with a magnet located in the slot.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Tempel Steel Company
    Inventor: Charles R. Frontczak
  • Publication number: 20140209077
    Abstract: In accordance with one embodiment, an ignition coil assembly includes an ignition coil cover, a boot, and an ignition coil. The ignition coil cover includes a plurality of fins, an opening, and a channel. The boot includes a slotted opening and a centralized orifice and is configured to be disposed within the opening of the ignition coil cover. The ignition coil includes a seat and a tab. The ignition coil is configured to be disposed within the centralized orifice. The seat is capable of supporting the ignition coil within the centralized orifice of the boot. The tab is configured to be inserted into the slotted opening and the channel when the ignition coil is disposed within the centralized office and the boot is disposed within the opening.
    Type: Application
    Filed: January 31, 2014
    Publication date: July 31, 2014
    Applicant: PRESTOLITE PERFORMANCE, LLC
    Inventors: Jason Ellison, Jon Arotarenza
  • Patent number: 8786392
    Abstract: A corona igniter 20 includes a coil 24 with a plurality of copper windings 26 extending longitudinally along a coil center axis ac. A magnetic core 30 is disposed along the coil center axis ac between the windings 26 and includes a plurality of discrete sections 32. The discrete sections 32 are spaced axially from one another by a core gap 34 filled with a non-magnetic gap filler 78. The magnetic core 30 has a core length lm and the coil 24 has a coil length lc less than the core length lm. A coil former 62 having a former thickness tf spaces the coil 24 from the magnetic core 30. A length difference ld between the core length lm and the coil length lc is preferably equal to or greater than the former thickness tf.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: July 22, 2014
    Assignee: Federal-Mogul Ignition Company
    Inventor: John Antony Burrows
  • Publication number: 20140137845
    Abstract: The invention relates to a corona ignition device for igniting fuel in an internal combustion engine by means of a corona discharge, comprising a central electrode, an insulator, into which the central electrode plugs, a housing, into which the insulator plugs, a bobbin, onto which a coil which is attached to the central electrode is wound, and a shield cap, which is plugged onto an end portion of the bobbin facing the insulator. According to the invention, a portion of the central electrode protrudes through a bottom of the shield cap, or a circumferential wall of the shield cap has one or more slots, or the shield cap has a circumferential wall, which protrudes only on one side beyond the bottom of the shield cap only on one side.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 22, 2014
    Inventors: Tom Achtstätter, Timo Stifel
  • Publication number: 20140116405
    Abstract: An ignition coil apparatus for high-frequency discharge includes: a primary coil that generates and accumulates a flux; a secondary coil that is magnetically coupled to the primary coil so as to generate a predetermined high voltage when energy of the accumulated flux is released and connected at one end to a high-voltage terminal used to supply energy to an external apparatus; a capacitor that is connected to the high-voltage terminal and prevents passing of the high voltage; and an inductor that, together with the capacitor, allows passing of a predetermined frequency component alone. The primary coil, the secondary coil, the capacitor, and the inductor are installed within a same package.
    Type: Application
    Filed: March 7, 2013
    Publication date: May 1, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Kimihiko TANAYA
  • Publication number: 20140102430
    Abstract: An ignition coil for an internal combustion engine is equipped with an assembly of a connector casing and a coil body. The coil body includes a primary winding wound around a primary spool. The connector casing has terminals each of which is equipped with a conductor fastener. The conductor fastener has a slit in which one of ends of the primary winding is fit to make an electric connection between the terminal and the primary winding. The primary spool has conductor guides and a backup support to establish alignment of each of the ends of the primary winding with one of the conductor fasteners and also to facilitate insertion of each of the ends of the primary winding into one of the conductor fasteners when the coil body is fitted into the connector casing, thereby ensuring the stability of electric connection between the primary winding and the terminal.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: DENSO CORPORATION
    Inventor: Masafuyu SANO
  • Publication number: 20140020667
    Abstract: A spark plug for an internal combustion engine has a cylindrical insulator, a center electrode held inside of the insulator, and, a terminal portion held inside of the insulator and electrically connected to the center electrode. The insulator has a insertion portion arranged closer to the base end side than the housing is, the insertion portion being inserted into a cylindrical plug cap. The insertion portion has a non-fit portion formed at the base end of the insulator, and, a fit portion formed to the head end side of the non-fit portion, an outer diameter of the non-fit portion being equal to or smaller than an inner diameter of the plug cap, the fit portion being fitted in the inner periphery surface of the plug cap.
    Type: Application
    Filed: June 5, 2013
    Publication date: January 23, 2014
    Inventor: Hiroya ISHIGURO
  • Publication number: 20130312721
    Abstract: An ignition coil for an internal combustion engine is provided which includes a body with a metallic hollow cylinder and a high-voltage portion joined to an end of the cylinder. The hollow cylinder has a primary winding and a secondary winding disposed therein. The high-voltage portion is made of a resin material and includes an inner cylinder and an outer cylinder disposed outside the inner cylinder through a gap. The inner cylinder has disposed therein a conductive elastic member which establishes an electric connection to a spark plug. A resinous insulator is disposed in a gap between the first and second cylinders. The resinous insulator is higher in insulation strength than the resin material of the high-voltage portion, thereby improving the degree of electric insulation between the metallic hollow cylinder and the conductive elastic member.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 28, 2013
    Applicant: DENSO CORPORATION
    Inventor: Yuki YAMAUCHI
  • Patent number: 8590518
    Abstract: An ignition coil for an Otto engine for an high-voltage winding has a conductive, laminar component, which is at a specified distance from the high-voltage winding and which is electrically connected to a terminal of the ignition coil. In a method for the capacitive coupling of the high-voltage winding of an ignition coil for diagnostic purposes, a conductive, laminar component of the ignition coil, which is at a specified distance from the high-voltage winding and which is electrically connected to a terminal of the ignition coil, is used as a capacitive coupling element.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: November 26, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Klaus Lerchenmueller
  • Publication number: 20130291844
    Abstract: An ignition coil for an internal combustion engine includes a magnetically-permeable core extending along a core longitudinal axis, the core having a pair of end surfaces on axially-opposite ends thereof. The ignition coil also includes a primary winding disposed outward of the core, a secondary winding disposed outward of the primary winding, and a structure comprising magnetically-permeable steel laminations having a base and a pair of legs, the structure defining a magnetic return path. The core is disposed between the pair of legs such that the core longitudinal axis extends through the legs and the end surfaces face toward the legs and at least one of the end surfaces of the core is spaced apart from a respective one of the legs to define an air gap. The structure is over-molded with an over-molding material such that the over-molding material fills at least a portion of the air gap.
    Type: Application
    Filed: May 1, 2012
    Publication date: November 7, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: ALBERT A. SKINNER, HARRY O. LEVERS, ANDRE V. SCAFF
  • Publication number: 20130284157
    Abstract: An ignition coil for an internal combustion engine is provided which is equipped with a high-voltage connector terminal and a high-voltage output terminal. The high-voltage connector terminal is connected to a secondary coil. The high-voltage output terminal is to be joined to a spark plug. The high-voltage connector terminal has a tip portion with a rounded surface which elastically establishes an electrical contact with the surface of the high-voltage output terminal. The rounded surface serves to minimize the wear of the high-voltage connector terminal and the high-voltage output terminal which arises from rubbing therebetween during assembling or operation of the ignition coil, thus avoiding the adhesion of foreign objects to the contact surfaces and ensuring the stability of electric communication between the high-voltage connector terminal and the high-voltage output terminal.
    Type: Application
    Filed: April 17, 2013
    Publication date: October 31, 2013
    Applicant: Denso Corporation
    Inventor: Masataka DEGUCHI
  • Patent number: 8561591
    Abstract: Embodiments of injectors configured for adaptively injecting and igniting various fuels in a combustion chamber are disclosed herein. An injector according to one embodiment includes an end portion configured to be positioned adjacent to a combustion chamber, and an ignition feature carried by the end portion and configured to generate an ignition event. The injector also includes a force generator assembly and a movable valve. The force generator assembly includes a first force generator separate from a second force generator. The first force generator creates a motive force to move the valve between the closed and open positions into the combustion chamber. The second force generator is electrically coupled to the ignition feature and provides voltage to the ignition feature to at least partially generate the ignition event.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: October 22, 2013
    Assignee: McAlister Technologies, LLC
    Inventor: Roy E. McAlister
  • Patent number: 8564392
    Abstract: An ignition coil includes a central core, a primary winding, a spool, a secondary winding, and a case outward of the core, spool, primary winding, and secondary winding. The secondary winding is wound on the spool and includes a high voltage end. The ignition coil also includes a cup formed of a metal material in electrical communication with the high voltage end of the secondary winding and is configured to be contacted by a conductive connector that is suitable for connection to a spark plug. The cup includes a generally cylindrical first sidewall press fit with the case and defining a press fit area at the interface of the first sidewall and the case, a generally cylindrical second sidewall spaced radially from the first sidewall, and an annular space defined between the press fit area and the second sidewall.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 22, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Albert A. Skinner, Harry O. Levers
  • Publication number: 20130269665
    Abstract: In an automotive plug ignition coil core system and method, a first core is formed of stacked laminations each of which comprises a segmented lamination strip folded around to create an enclosed loop shape. Each strip has four segments and a hinge web is provided between first and second, second and third, and third and fourth segments. A grain direction of electrical steel runs lengthwise in each of the segments. A second core inside of the closed loop first core is formed of a plurality of stacked laminations, each lamination having a grain direction of electrical steel running lengthwise.
    Type: Application
    Filed: April 16, 2012
    Publication date: October 17, 2013
    Inventor: Mark Bender
  • Publication number: 20130206123
    Abstract: A capacitive ignition system for an internal combustion engine includes a voltage converter which has two primary terminals and two secondary terminals a primary voltage source has two voltage source terminals (A+, A?) which are connected in each instance to one of the primary terminals so that a primary circuit is formed; a switch which is incorporated within the primary circuit and a controller so that the switch can be closed and opened; a first control device constructed to actuate the controller in accordance with an ignition pattern for closing and/or opening; an electrical capacitance (C1, C2) within the primary circuit; and a second control device (25) constructed to maintain constant a voltage rise at the secondary terminals, which occurs in order to reach the ignition voltage, as the ignition energy requirement of an ignition device connected to the secondary terminals changes.
    Type: Application
    Filed: January 16, 2013
    Publication date: August 15, 2013
    Applicant: MAN Diesel & Turbo SE
    Inventor: MAN Diesel & Turbo SE
  • Publication number: 20130199510
    Abstract: An ignition system is provided, in which a Zener diode is connected in parallel with a spark plug, to suppress torque variation from becoming large in an engine when deterioration of the spark plug is advanced. Specifically, the ignition system includes a secondary coil having an end connected to a center electrode of the spark plug via a connecting path. The connecting path is connected to a constant-voltage path having a grounded end and including the Zener diode. The time from when an ignition signal is switched off until when ignition timing occurs is measured for a plurality of times. The difference between a maximum value and a minimum value among the plurality of measurements is defined to be a variation range. A breakdown voltage of the Zener diode is adjusted based on requirements such as for rendering the variation range to be a predetermined time or smaller.
    Type: Application
    Filed: December 20, 2012
    Publication date: August 8, 2013
    Applicant: DENSO CORPORATION
    Inventor: DENSO CORPORATION
  • Patent number: 8499751
    Abstract: An ignition coil device according to the present invention is provided with a primary coil to which a primary current is applied; a secondary coil that is magnetically coupled with the primary coil and generates an ignition voltage when the primary current is cut off, so as to produce a spark discharge between a pair of electrodes of an ignition plug; a noise suppression element electrically connected between the secondary coil and one of the electrodes of the ignition plug; and a case made of an insulating material having a noise suppression element containing unit. The device is characterized by including ribs disposed in the noise suppression element containing unit and arranged in such a way as to face the outer circumferential surface of the noise suppression element and a resin insulating material that is filled into the containing unit and makes contact with the ribs and the noise suppression element.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 6, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Idogawa, Takeshi Shimizu
  • Publication number: 20130192571
    Abstract: There are provided a first coil device (102) that releases accumulated energy so as to generate a predetermined high voltage and supplies the predetermined high voltage to a first electrode (101a) of an ignition plug (101) so that a spark discharge path is formed in a gap between the first electrode (101a) and a second electrode (101b), and a second coil device (103, 301) that supplies a current to the spark discharge path formed in the gap by releasing accumulated energy; a large AC discharge current is supplied in a short cycle to the gap between the electrodes of the ignition plug (101).
    Type: Application
    Filed: June 11, 2012
    Publication date: August 1, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Kimihiko TANAYA
  • Patent number: 8474428
    Abstract: An ignitor assembly constructed in accordance with one aspect of the invention has an upper inductor subassembly coupled to a lower firing end subassembly for relative pivot movement between the subassemblies. The upper inductor subassembly includes a tubular housing with inductor windings received therein with an upper electrical connector adjacent an upper end of the housing and a lower electrical connector adjacent a lower end of the housing. The lower firing end subassembly includes a ceramic insulator and a metal housing surrounding at least a portion of the ceramic insulator. The ceramic insulator has an electrical terminal extending from a terminal end and an electrode extending from a firing end. A flexible tube couples the upper inductor subassembly to the lower firing end subassembly and maintains the electrical terminal of the lower firing end subassembly in electrical contact with the lower electrical connector of the upper at a pivot joint.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: July 2, 2013
    Assignee: Federal-Mogul Ignition Company
    Inventors: James D Lykowski, Keith Hampton
  • Patent number: 8439023
    Abstract: An ignition coil, in particular for an internal combustion engine of a motor vehicle, having a secondary winding situated on a coil body for the production of a high voltage at a spark plug, having a contact sleeve that electrically contacts the secondary winding and that is capable of being pushed over an end area of the coil body and that has at least one contact element for the secondary winding, and having a holding-down element that can be pushed over the contact sleeve and that acts on the at least one contact element of the contact sleeve. In its end position, the holding-down element protrudes beyond the at least one contact element of the contact sleeve, seen in the axial direction of the coil body, and covers the at least one contact element.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 14, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Konstantin Lindenthal, Johannes Kappeler, Holger Raaf, Thomas Breckle
  • Publication number: 20130104863
    Abstract: An ignition coil assembly and a method of assembling the ignition coil assembly including a first spool, a first coil, and a second spool. The first coil is wound around a first spool outer surface. The first spool and the first coil are disposed within a cavity of the second spool and an electrically insulating material injected into an annular space defined between a first coil outer surface and a second spool inner surface. The first spool is configured to allow a decrease of a circumference of the first spool when the first coil is wound around an outer surface of the first spool. Decreasing the circumference of the first spool increases the annular space sufficient to inject the electrically insulating material into the annular space without creating substantial voids in the electrically insulating material.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 2, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Luis Arturo ARROYO, Jose J. GALICIA
  • Publication number: 20130092136
    Abstract: Ignition is performed in such a way that a bias voltage is applied to a first electrode of an ignition plug and a current detection device detects a current that flows in the first electrode, that based on the value of the detected current, a smolder level detection device detects the level of a smolder produced in the ignition plug, and that a control device controls, based on the detected smolder level, at least one of the timing of ignition, the number of ignition events per power stroke of an internal combustion engine, and the amount of energy accumulated in an ignition coil device.
    Type: Application
    Filed: March 19, 2012
    Publication date: April 18, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Kimihiko TANAYA
  • Patent number: 8397703
    Abstract: A high voltage resonator-amplifier for a radiofrequency ignition system that can be used in an internal combustion engine, the resonator-amplifier including at least two electrodes, a coil arranged in alignment with the electrodes along a longitudinal axis, and a linking mechanism retaining the coil and the electrodes in a relatively fixed position. The coil is wound around a closed bend which in turn wraps around the longitudinal axis.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: March 19, 2013
    Assignee: Renault S.A.S.
    Inventors: Xavier Jaffrezic, Marc Pariente, Andre Agneray
  • Publication number: 20130061834
    Abstract: A spark ignition engine capable of fixing an ignition coil case even in a small engine includes an intake manifold 9 attached to a cylinder head 1, a coil case attachment stay 10 attached to the intake manifold 9, a cylinder portion through hole 12 formed on a board 11 of the coil case attachment stay 10, and a coil case attaching portion 13 provided in an upper part of the board 11. A flexible cylinder portion is caused to penetrate through a cylinder portion through hole, a tongue piece 15 is caused to protrude from a coil case peripheral wall 14 of an ignition coil case 7. The tongue piece 15 is mounted on the coil case attaching portion 13 and the coil case peripheral wall 14 is caused to abut on an edge portion 16 of the coil case attaching portion 13.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 14, 2013
    Applicant: KUBOTA CORPORATION
    Inventors: Hiroshi INOUE, Masaharu OHNO, Yutaka TERUUMI, Hiroyuki TSUDA
  • Patent number: 8387598
    Abstract: This document discusses, among other things, a system and method for detecting an open secondary condition in a secondary coil of an ignition coil using a control signal received from a control input of a switch configured to control the flow of current to a primary coil of the ignition coil. In an example, the flow of current in the primary coil of the ignition coil can be controlled using an insulated gate bipolar junction transistor (IGBT), and the open secondary condition in the secondary coil of the ignition coil can be detected using a received gate voltage of the IGBT.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: March 5, 2013
    Assignee: Fairchild Semiconductor Corporation
    Inventors: James Edward Gillberg, Jack Edward Wojslawowicz