Monostable Multivibrator Controls Timing Of Coil Primary Current Patents (Class 123/629)
  • Patent number: 9341155
    Abstract: An ignition apparatus for an internal combustion engine, comprising at least one ignition plug, an actuating circuit provided with first and second coil pairs corresponding to one ignition plug for generating spark discharge in the at least one ignition plug. First and second ignition signals respectively supplied to the first and second coil pair are generated so that a first discharge period and a second discharge period partially overlap with each other during an overlap discharge period, the overlap discharge period is made equal to a set overlap period, and a start timing of the first discharge period is prior to a start timing of the second discharge period. The first and second discharge periods are time periods of electric discharges generated by the first and second coil pairs. The set overlap period is set according to the first discharge period, a temporary cut threshold value, and a discharge start current value at the start timing of the first discharge period.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: May 17, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Makoto Kurahashi, Noritaka Kimura
  • Patent number: 7552724
    Abstract: A multi-spark ignition system for an internal combustion engine includes ignition coils each of which is mounted on one of spark plugs of an engine, an energy storing circuit, switching elements that repeatedly discharge electric energy stored by the energy storing circuit into the primary coil of the ignition coils; and a control circuit that controls the energy storing circuit and the switching elements according to consolidated signals each of which includes an energy storing command signal for storing electric energy into the energy storing circuit and a joint energy discharging period command signal for discharging the electric energy by the one of the spark plugs.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: June 30, 2009
    Inventor: Yuuki Yamauchi
  • Patent number: 4787360
    Abstract: The present invention relates to an electronically-controlled plasma ignition device for internal combustion engines.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: November 29, 1988
    Assignee: EL.EN.A. S.p.A.
    Inventor: Claudio Filippone
  • Patent number: 4408592
    Abstract: An ignition system for internal combustion engines of the type in which after the energizing current flow to the primary winding of an ignition coil has been interrupted and an ignition spark generating high voltage has been produced in the secondary winding, the primary winding is energized again to interrupt the ignition spark. The ignition spark is interrupted at around the TDC only when the engine is at high speed operating conditions and the deenergizing current in the primary winding is not interrupted in a moment but decreased gradually. Also, the ignition spark is interrupted only when the ignition spark is to continue beyond the top dead center.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: October 11, 1983
    Assignee: Nippon Soken, Inc.
    Inventors: Toru Yoshinaga, Toshihiko Igashira, Kouichi Mori, Hisasi Kawai, Seiji Morino
  • Patent number: 4406273
    Abstract: An ignition system for the internal combustion engine comprising a high voltage circuit for generating a spark, having the primary and secondary windings. In response to a first signal, the current in the primary winding is cut off thereby to generate a high voltage at the secondary winding. In response to a subsequent second signal, the primary winding is shorted thereby to cut off the high voltage thus far generated in the secondary winding, thus properly regulating the duration of the spark generated.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: September 27, 1983
    Assignee: Nippon Soken, Inc.
    Inventors: Toru Yoshinaga, Toshihiko Igashira, Kouichi Mori, Hisasi Kawai, Seiji Morino