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:
Jun. 09, 2009
Filed:
Jun. 08, 2006
Applicants:
Makoto Nakayashiki, Toyota, JP;
Kazuyuki Watanabe, Anjo, JP;
Inventors:
Makoto Nakayashiki, Toyota, JP;
Kazuyuki Watanabe, Anjo, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/20 (2006.01); F16H 59/72 (2006.01);
U.S. Cl.
CPC ...
Abstract
The temperature of a friction engagement device of an automatic transmission is estimated, and the target speed ratio of a torque converter increases as the estimated temperature of the friction engagement device increases. The engagement load of the friction engagement device is then controlled so as to achieve the increased target speed ratio of the torque converter.