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:
Apr. 15, 2014
Filed:
Jan. 29, 2009
Daisaku Sawada, Gotenba, JP;
Eiichi Kamiyama, Mishima, JP;
Takashi Kawasaki, Susono, JP;
Yukihiro Nakasaka, Suntou-Gun, JP;
Daisuke Akihisa, Susono, JP;
Naoto Hisaminato, Susono, JP;
Daisaku Sawada, Gotenba, JP;
Eiichi Kamiyama, Mishima, JP;
Takashi Kawasaki, Susono, JP;
Yukihiro Nakasaka, Suntou-Gun, JP;
Daisuke Akihisa, Susono, JP;
Naoto Hisaminato, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A high expansion ratio internal combustion engine includes: a variable compression ratio mechanism that varies a mechanical compression ratio of the internal combustion engine; and a variable valve train in which some valve(s) of a plurality of intake valves is phase-variable and the remaining valve(s) is phase-fixed, the variable valve train being configured such that a working angle of the phase-variable intake valve is larger than a working angle of the phase-fixed intake valve, wherein a valve-open timing of the phase-variable intake valve is retarded after a valve-open timing of the phase-fixed intake valve when the internal combustion engine is under low-load operating state.