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:
Oct. 25, 2011
Filed:
Feb. 21, 2007
Yasumichi Inoue, Toyota, JP;
Zenichiro Mashiki, Nisshin, JP;
Mitsuhiro Nomura, Toyota, JP;
Haruyuki Urushihata, Chiryu, JP;
Yasumichi Inoue, Toyota, JP;
Zenichiro Mashiki, Nisshin, JP;
Mitsuhiro Nomura, Toyota, JP;
Haruyuki Urushihata, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Denso Corporation, Aichi-ken, JP;
Abstract
In a variable valve timing apparatus having a VVT mechanism in each of a plurality of banks, start of a valve timing control is not permitted until reference position learning of valve timing is completed in the corresponding bank and in other banks. Accordingly, the plurality of banks come to have matching valve timing setting at the time of valve timing control, whereby variation in the amount of air introduced to cylinders can be suppressed, and satisfactory combustion characteristics can be maintained.