Patents by Inventor Yoshitaka Kakuhama

Yoshitaka Kakuhama 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).

  • Method and device for integrative control of gas engine
    Patent number: 7747378
    Abstract: An integrative control method and device for controlling gas engines is proposed which is improved load responsivity of the engine while maintaining air fuel ratio control.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: June 29, 2010
    Assignee: Mitsubishi Heavy Industries Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for controlling starting of gas engine
    Patent number: 7654247
    Abstract: A gas engine has a starting operation mode in which fuel gas flow is controlled based on actual mixture flow rate and adequate excess air ratio prescribed for each of detected values of operating conditions of the engine and then mixture flow is controlled so that engine rotation speed approaches a target rotation speed, and a normal operation mode in which fuel gas flow is controlled so that engine rotation speed approaches the target rotation speed and then mixture flow rate is controlled so that air fuel ratio of the mixture coincides with an adequate value prescribed for each of detected values of operating conditions of the gas engine with the fuel gas flow flowing at the commanded fuel gas flow rate, and a switchover rotation speed is predetermined so that operation mode is switched from starting mode to normal mode when engine speed reaches the switchover rotation speed.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: February 2, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for integrative control of gas engine
    Patent number: 7650222
    Abstract: An integrative control method and device for controlling gas engines is proposed which is improved load responsivity of the engine in transient operation.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: January 19, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for integrative control of gas engine
    Patent number: 7650223
    Abstract: An integrative control method and device for controlling gas engines is proposed which load responsivity of the engine is improved while maintaining air fuel ratio control and stable control is performed when fuel gas of different calorific value is used.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: January 19, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for controlling starting of gas engine
    Publication number: 20090071438
    Abstract: A method and device for controlling starting of a gas engine is proposed which is superior in starting performance and improved in load responsivity while maintaining air fuel ratio control.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 19, 2009
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for integrative control of gas engine
    Publication number: 20090071439
    Abstract: An integrative control method and device for controlling gas engines is proposed which is improved load responsivity of the engine while maintaining air fuel ratio control.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 19, 2009
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for integrative control of gas engine
    Publication number: 20090076709
    Abstract: An integrative control method and device for controlling gas engines is proposed which load responsivity of the engine is improved while maintaining air fuel ratio control and stable control is performed when fuel gas of different calorific value is used.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 19, 2009
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura
  • Method and device for integrative control of gas engine
    Publication number: 20090076708
    Abstract: An integrative control method and device for controlling gas engines is proposed which is improved load responsivity of the engine in transient operation.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 19, 2009
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masataka Shiraishi, Yoshitaka Kakuhama, Kei Sakai, Yosuke Kitamura