Patents by Inventor Akinobu Yoshibe

Akinobu Yoshibe 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).

  • Compression ratio control for internal combustion engine
    Patent number: 5450824
    Abstract: An internal combustion engine has an intake valve and an exhaust valve. When the engine operates at low speed with low and medium load, the intake valve is operated to close at a relatively advanced timing for increased volumetric effeciency and increased real compression ratio. When the engine operates at low speeds with high load, the exhaust valve is operated to close at a relatively retarded timing with the intake valve being operated to close at the relatively advanced timing, whereby the volumetric efficiency is subject to a drop to prevent occurrence of knocking.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: September 19, 1995
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Michihiro Yamane, Akinobu Yoshibe, Shuichi Nishimura