Patents by Inventor Yukio Ohtaka

Yukio Ohtaka 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).

  • Device for controlling a multi-cylinder engine
    Patent number: 5372112
    Abstract: An engine including at least two digital computers wherein controlled systems each including a switching unit, an ignitor, and a spark plug are independently provided for each cylinder, and controlled systems each including a switching unit, a drive circuit, and a fuel injector are independently provided for each cylinder. The controlled systems are normally controlled by one of the digital computers, but when one of the digital computers malfunctions, the controlled systems are controlled by the other digital computer.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: December 13, 1994
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippondenso Co. Ltd.
    Inventors: Yukio Ohtaka, Kazuhiro Sakurai, Yutaka Obuchi, Shigetaka Tanaka, Takashi Mori