Patents by Inventor Tosiyuki Maehara

Tosiyuki Maehara 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 device for a diesel engine
    Patent number: 5908022
    Abstract: The present invention provides a fuel-injection control device for a diesel engine which uses a combination of a common-rail-type fuel-injection pump and an EGR control for exhaust gas purification.In a fuel-injection control device for a diesel engine having a common-rail-type fuel-injection pump comprising a means for controlling fuel-injection pressure according to engine load and an EGR control means for adjusting the EGR ratio according to engine load, where the EGR can be reduced to zero, the means for controlling fuel-injection pressure includes a correcting function to correct the fuel-injection pressure in response to the EGR ratio.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: June 1, 1999
    Assignee: Toyota A. Aoki & Associates
    Inventors: Sigeru Aoki, Tosiyuki Maehara