Patents by Inventor Akira Shimoura

Akira Shimoura 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).

  • Gasoline engine fed with lean mixture only
    Patent number: 4092969
    Abstract: A gasoline engine fed with lean mixture only is improved for practical use. The cylinder head of the engine has an area providing intense turbulance in cooperation with the top surface of the piston. It is provided, further, with a torch chamber which emits torch flames sharing the combustion of lean mixture so that the flame propagation distance is decreased. Among the torch flame, one passes through a portion of the combustion chamber just below the center of the head of the suction valve, and another passes through a portion of the combustion chamber just below the center of the head of the exhaust valve.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: June 6, 1978
    Assignee: Daihatsu Kogyo Kabushiki Kaisha
    Inventors: Junichi Ono, Akira Shimoura, Yukiyasu Tanaka