Patents by Inventor Haruo Yonezawa

Haruo Yonezawa 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).

  • Split mode internal combustion engine with improved NO.sub.x reduction means
    Patent number: 4303053
    Abstract: Under light load condition wherein only selected cylinders are fired or operate, low temperature exhaust gas gathering in an exhaust chamber for the unused cylinders is introduced into an intake chamber for the firing cylinders thereby to allow the firing cylinders to produce a less amount of NO.sub.x.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: December 1, 1981
    Assignee: Nissan Motor Company, Limited
    Inventors: Yukihiro Etoh, Toshiaki Tanaka, Haruo Yonezawa, Yoshikatsu Sakamoto