Patents by Inventor Shogo Oomori

Shogo Oomori 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).

  • Exhaust-gas recirculation system for internal combustion engine
    Patent number: 4534334
    Abstract: An exhaust-gas recirculation (EGR) system has a main control device that supplies a control signal to an EGR valve actuating device that opens an EGR valve to a desired extent. Under normal conditions, a pulse actuating signal having a time-width corresponding to a difference between the actual opening of the EGR valve and the desired opening is supplied to the valve actuating device. Then, the next actuating signal is fed to the valve actuating device after a given length of quiescent time. When the desired opening changes suddenly, however, the normal operation is discontinued and an actuating signal corresponding to a new desired opening is supplied to the valve actuating device. By so doing, the EGR valve is at all times opened to the desired extent, not only under normal conditions but also when the desired amount of valve opening changes suddenly.
    Type: Grant
    Filed: February 14, 1984
    Date of Patent: August 13, 1985
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Nobuaki Murakami, Shogo Oomori