Patents by Inventor Syuji Tomura

Syuji Tomura 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).

  • Torque transmission device and method of reducing effects of torque pulsations
    Patent number: 7121975
    Abstract: Torque pulsations generated in the torque of an engine are obtained from detection signals from a crankshaft angle detection sensor and an engine water temperature detection sensor at the time of an engine starting operation. A control unit controls an MG1 via a drive circuit so that a damping torque of the same phase as the torque pulsations is generated, and ensures that the torque pulsations of the engine are not transmitted to a ring gear from a planetary carrier.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: October 17, 2006
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha
    Inventors: Syuji Tomura, Yoshiaki Ito, Eiji Sato, Shoichi Sasaki
  • Torque transmission device and method of reducing effects of torque pulsations
    Publication number: 20040142790
    Abstract: Torque pulsations generated in the torque of an engine are obtained from detection signals from a crankshaft angle detection sensor and an engine water temperature detection sensor at the time of an engine starting operation. A control unit controls an MG1 via a drive circuit so that a damping torque of the same phase as the torque pulsations is generated, and ensures that the torque pulsations of the engine are not transmitted to a ring gear from a planetary carrier.
    Type: Application
    Filed: November 5, 2003
    Publication date: July 22, 2004
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Syuji Tomura, Yoshiaki Ito, Eiji Sato, Shoichi Sasaki