Patents by Inventor Hiroshi Shimanuki

Hiroshi Shimanuki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5574617
    Abstract: A fuel injection valve drive control apparatus in which an opening current is supplied to an excitation coil to open an electromagnetic fuel injection valve, and thereafter a holding current is supplied to keeping the valve open, comprising a first switch connected in series with the coil, a valve driver for controlling conduction of the first switch, and a flywheel circuit and a second switch in parallel with the coil. The second switch is turned on a predetermined time following the start of supply of the holding current. A timer, provided to measure the predetermined time, starts clocking in response to the supply of the holding current or the valve opening current, or turning off of the first switch. The activation time of the second switch is shortened, whereby power consumption is reduced.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: November 12, 1996
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Shimanuki, Toshiaki Ariyoshi