Patents by Inventor Yuuji Ishiwatari

Yuuji Ishiwatari 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).

  • Controller for turbocharger with electric motor
    Publication number: 20080047268
    Abstract: A controller controls an electrically assisted turbocharger including a turbocharger body and an assist electric motor for assisting the turbocharger body in driving. The controller controls the operation of the assist electric motor. The controller compares a target power value of the assist electric motor with an actual power value actually supplied to the assist electric motor, and computes the differential between them. The controller compensates a torque error of the assist electric motor due to the differential (updating a correction coefficient) based on the differential.
    Type: Application
    Filed: August 14, 2007
    Publication date: February 28, 2008
    Applicant: DENSO CORPORATION
    Inventors: Nobumasa Isogai, Yuuji Ishiwatari, Hisaharu Morita