Patents by Inventor Sinobu Hirayama

Sinobu Hirayama 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 apparatus for an internal combustion engine
    Patent number: 5772122
    Abstract: Fuel injected from the cylindrical hole of a valve body passes through holes of an orifice plate and fuel holes of an assist sleeve. Collided and thus diverted first air flows collide with second air flows so as to sandwich fuel flows therebetween in a space at the upstream portions of the fuel holes. Each fuel flow is finely atomized while yet still maintaining directional control effected by the upstream orifice plate holes. Wall flow along the inner wall of a flow separator is suppressed, thus providing a fuel spray with improved atomization.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: June 30, 1998
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masanari Sugiura, Sinobu Hirayama, Kaoru Oda