Patents by Inventor Shiro Shimada

Shiro Shimada 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).

  • Ignition timing controller for multi-cylinder engine
    Patent number: 4760828
    Abstract: An ignition timing control arrangement for an internal combustion engine having a plurality of cylinders. It is determined whether the same cylinder is knocking on successive engine cycles or whether different cylinders are knocking. The ignition timing of only a single cylinder is retarded to cause a non-knocking ignition if the same cylinder is knocking on successive engine cycles. However, ignition timing of all cylinders is retarded to minimize the knocking and maximize the engine torque if different cylinders are knocking.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: August 2, 1988
    Assignee: Nippondenso Co., Ltd.
    Inventors: Shiro Shimada, Hiroshi Haraguchi, Toshiharu Iwata