Patents by Inventor Jiro Watase

Jiro Watase 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).

  • Intake control system for engine
    Patent number: 5775283
    Abstract: A number of embodiments of induction systems for internal combustion engines that permit operation on the Miller cycle without introducing pumping losses or by substantially minimizing the pumping losses. Basically, the system provides a variable volume air chamber that supplies the major portion of the intake charge or all of the intake charge under low-speed, low-load conditions. Various valving and variable volume chamber constructions are illustrated. In addition, embodiments using air-assisted fuel injection are also disclosed.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 7, 1998
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Seiji Sawai, Kunihiko Nakajima, Jiro Watase