Patents by Inventor Yoshiharu Sudani

Yoshiharu Sudani 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).

  • Valve timing control system for internal combustion engine
    Patent number: 6367437
    Abstract: There is provided a valve timing control system for an internal combustion engine, which is capable of suitably controlling a hydraulic pressure control valve 10 for control of a cam phase irrespective of a temperature condition of a coil 100 of the control valve 10, thereby enhancing the accuracy of feedback control of the cam phase. The control valve 10 drives a cam phase change mechanism 8 according to an amount of current flowing through the coil 100. An ECU 2 feedback-controls a provisional duty factor DOUTVT for controlling the amount of current such that an actual cam phase CAIN becomes equal to a desired cam phase CAINCMD. The ECU 2 sets a desired current amount VTCIOBJ based on the provisional duty factor obtained by the feedback control. The ECU 2 feedback-controls an output duty factor DDOUT for control of the amount of current supplied to the control valve 10 such that an actual current amount VTCIACT becomes equal to a desired current amount VTCIOBJ.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: April 9, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Mitsuhiro Nakamura, Yoshiharu Sudani
  • Valve timing control system for internal combustion engine
    Publication number: 20010020459
    Abstract: There is provided a valve timing control system for an internal combustion engine, which is capable of suitably controlling a hydraulic pressure control valve 10 for control of a cam phase irrespective of a temperature condition of a coil 100 of the control valve 10, thereby enhancing the accuracy of feedback control of the cam phase. The control valve 10 drives a cam phase change mechanism 8 according to an amount of current flowing through the coil 100. An ECU 2 feedback-controls a provisional duty factor DOUTVT for controlling the amount of current such that an actual cam phase CAIN becomes equal to a desired cam phase CAINCMD. The ECU 2 sets a desired current amount VTCIOBJ based on the provisional duty factor obtained by the feedback control. The ECU 2 feedback-controls an output duty factor DDOUT for control of the amount of current supplied to the control valve 10 such that an actual current amount VTCIACT becomes equal to a desired current amount VTCIOBJ.
    Type: Application
    Filed: March 2, 2001
    Publication date: September 13, 2001
    Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHA
    Inventors: Mitsuhiro Nakamura, Yoshiharu Sudani