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:
Jan. 17, 2017
Filed:
Mar. 23, 2012
Applicants:
Hisaki Ito, Gotenba, JP;
Takashi Ogawa, Susono, JP;
Inventors:
Hisaki Ito, Gotenba, JP;
Takashi Ogawa, Susono, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02D 13/02 (2006.01); F02D 41/00 (2006.01); F01L 13/00 (2006.01); F02B 31/00 (2006.01);
U.S. Cl.
CPC ...
F02D 13/0226 (2013.01); F01L 13/0036 (2013.01); F01L 13/0063 (2013.01); F02D 13/0234 (2013.01); F02D 41/0002 (2013.01); F01L 2013/0073 (2013.01); F02B 2031/006 (2013.01); F02D 2041/001 (2013.01); F02D 2041/0015 (2013.01); Y02T 10/18 (2013.01); Y02T 10/42 (2013.01);
Abstract
A variable valve device for an internal combustion engine is equipped with a variable valve mechanism capable of changing the working angle of an intake valve while holding the maximum lift amount of the intake valve constant. The variable valve device retards the timing for closing the intake valve as the load of the internal combustion engine rises, and enlarges the working angle, while holding the timing for opening the intake valve constant. Operating characteristics of the intake valve are provided in accordance with the load of the internal combustion engine.