Patents by Inventor Yoshiji Miyamoto

Yoshiji Miyamoto 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).

  • Patent number: 7280910
    Abstract: A method and an apparatus for protecting an engine are disclosed which are capable of preventing damage to the engine or associated parts thereof. The engine is provided with an electronic control fuel injection system. A quasi-abnormality of at least one of variables in connection with the engine and the associated parts thereof, such as an engine cooling water, a fuel pressure or the like is detected by a sensor. When the quasi-abnormality of the variable and such a quasi-abnormal state lasts for a predetermined period of time, a throttle opening of an electronic control throttle is regulated so as to limit an engine rotational speed to a low rate.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: October 9, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yoshiji Miyamoto, Toshihiro Kobayashi
  • Patent number: 6912999
    Abstract: A method of controlling fuel injection is disclosed which enables highly accurate fuel injection and an enhanced durability of fuel injection valves in an internal combustion engine using an SPI system. The engine has a plurality of fuel injection valves disposed in an intake passage on an upstream side of a collector portion of an intake manifold of the internal combustion engine so that fuel is supplied to a plurality of cylinders of the engine by fuel injection from the fuel injection valves. The method includes alternately operating the plurality of fuel injection valves so as to supply the fuel when an intake airflow is a low flow rate equal to or less than a predetermined value, and simultaneously operating the plurality of fuel injection valves so as to supply the fuel when the intake airflow is a high flow rate more than the predetermined value.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: July 5, 2005
    Assignee: Nissan Kohki Co., Ltd.
    Inventors: Yoshiji Miyamoto, Toshihiro Kobayashi
  • Publication number: 20040244777
    Abstract: A method of controlling fuel injection is disclosed which enables highly accurate fuel injection and an enhanced durability of fuel injection valves in an internal combustion engine using an SPI system. The engine has a plurality of fuel injection valves disposed in an intake passage on an upstream side of a collector portion of an intake manifold of the internal combustion engine so that fuel is supplied to a plurality of cylinders of the engine by fuel injection from the fuel injection valves. The method includes alternately operating the plurality of fuel injection valves so as to supply the fuel when an intake airflow is a low flow rate equal to or less than a predetermined value, and simultaneously operating the plurality of fuel injection valves so as to supply the fuel when the intake airflow is a high flow rate more than the predetermined value.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 9, 2004
    Inventors: Yoshiji Miyamoto, Toshihiro Kobayashi
  • Publication number: 20040245034
    Abstract: A method and an apparatus for protecting an engine are disclosed which are capable of preventing damage to the engine or associated parts thereof. The engine is provided with an electronic control fuel injection system. A quasi-abnormality of at least one of variables in connection with the engine and the associated parts thereof, such as an engine cooling water, a fuel pressure or the like is detected by a sensor. When the quasi-abnormality of the variable and such a quasi-abnormal state lasts for a predetermined period of time, a throttle opening of an electronic control throttle is regulated so as to limit an engine rotational speed to a low rate.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 9, 2004
    Inventors: Yoshiji Miyamoto, Toshihiro Kobayashi