The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2011
Filed:
Jan. 26, 2009
Applicants:
Yoshiyuki Higaki, Iwata, JP;
Osamu Takii, Iwata, JP;
Hirofumi Serikawa, Iwata, JP;
Inventors:
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 47/10 (2006.01); F02M 25/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
A four stroke internal combustion engine has a gas reserving chamberwhich communicates with an exhaust portand is configured to reserve burned gas discharged from a combustion chamber. The burned gas flows into the gas reserving chamberwhile an exhaust valve including a valve headand a stemis opened in an expansion stroke. The burned gas reserved in the gas reserving chamberis discharged to the combustion chamber while the exhaust valve is opened in an intake stroke.