Patents by Inventor Kenichirou Hanada

Kenichirou Hanada 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: 4807581
    Abstract: A system for controlling the operation of an internal combustion engine on the basis of air/fuel ratios and engine loads. A flow rate of intake air sucked into the engine and the cycle of engine revolutions are detected to determine an average flow rate of intake air, which is then used in cooperation with a compression ratio and an engine displacement to determine a net flow rate of intake air or the charging efficiency of the engine. This parameter represents a precise engine load and is used to regulate fuel injected into the engine. As a result, engine operations may be optimally controlled even during transitional operating states of the engine.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: February 28, 1989
    Assignees: Mazda Motor Corporation, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshihide Nishikawa, Kenichirou Hanada, Yukinobu Nishimura, Setsuhiro Shimomura
  • Patent number: 4706634
    Abstract: A novel and improved fuel-injection control system for an internal combustion engine capable of effecting minute or fine revisions of acceleration of an engine by appropriately processing an output signal from an AFS without employing a throttle sensor for detecting the opening degree of a throttle valve. The width of a basic injection pulse is calculated from the amount of intake air sucked into an internal combustion engine and the number of engine revolutions so that between the injection pulses synchronized with the number of engine revolutions, a series of special injection pulses having the calculated pulse width are generated for revision of engine acceleration.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: November 17, 1987
    Assignees: Mazda Motor Corporation, Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshihide Nishikawa, Kenichirou Hanada, Yukinobu Nishimura, Setsuhiro Shimomura