Patents by Inventor Mutsuro Sameshima

Mutsuro Sameshima 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).

  • Fuel injection control means for internal combustion engines
    Patent number: 4641620
    Abstract: An engine intake system including a primary and secondary intake passages which are separated from each other and are respectively provided with a primary and a secondary fuel injection valve. The secondary intake passage is closed and the secondary fuel injection valve is inoperable for light load engine operation. When the secondary fuel injection valve is restarted to operate for heavy load engine operation, the quantity of fuel supply is momentarily increased to avoid any stepwise change in the engine output torque. The amount of the increase in the fuel supply is increased in response to a decrease in the engine speed. When operation of the secondary fuel injection valve is stopped, the fuel supply is decreased.
    Type: Grant
    Filed: August 13, 1985
    Date of Patent: February 10, 1987
    Assignee: Mazda Motor Corporation
    Inventors: Takeshi Yoshimura, Mutsuro Sameshima, Toru Nakanishi, Shigeo Kato