Patents by Inventor Toshihiko Nisimura

Toshihiko Nisimura 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).

  • Diagnostic apparatus for valve timing control system
    Patent number: 7036358
    Abstract: A diagnostic apparatus of a valve timing control system in which a valve timing is variably controlled by changing a rotational phase between a crankshaft and a cam shaft of an engine. The apparatus has a detector for detecting a fluctuation of engine speeds of the engine following a change of engine operating conditions and for calculating a diagnosis value based on the fluctuation; and a comparator for comparing the diagnosis value with a preestablished threshold value and for judging that a failure occurs in the valve timing control system, in case where the diagnosis value exceeds the threshold value.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: May 2, 2006
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Toshihiko Nisimura
  • Diagnostic apparatus for valve timing control system
    Publication number: 20040187566
    Abstract: A diagnostic apparatus of a valve timing control system in which a valve timing is variably controlled by changing a rotational phase between a crankshaft and a cam shaft of an engine, comprises means for detecting a fluctuation of engine speeds of the engine following a change of engine operating conditions and for calculating a diagnosis value based on the fluctuation; and means for comparing the diagnosis value with a preestablished threshold value and for judging that a failure occurs in the valve timing control system, in case where the diagnosis value exceeds the threshold value.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 30, 2004
    Applicant: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Toshihiko Nisimura