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. 14, 2011
Filed:
Jul. 25, 2007
Tomoaki Honma, Kanagawa, JP;
Masaaki Uchida, Kanagawa, JP;
Shusaku Katakura, Kanagawa, JP;
Yoshinobu Kawamoto, Kanagawa, JP;
Sadamu Fujiwara, Kanagawa, JP;
Tomoaki Honma, Kanagawa, JP;
Masaaki Uchida, Kanagawa, JP;
Shusaku Katakura, Kanagawa, JP;
Yoshinobu Kawamoto, Kanagawa, JP;
Sadamu Fujiwara, Kanagawa, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
A control apparatus for an automatic transmission includes a target-value setting section configured to set a target rotational-speed difference between input and output rotational speeds of at least one of first and second friction-engagement elements; a total torque-capacity calculating section configured to calculate a total torque capacity of the first and second friction-engagement elements by adding a transmission input torque to a correction value calculated from a deviation between the target rotational-speed difference and an actual rotational-speed difference; a distribution-ratio setting section configured to set a distribution ratio; an individual torque-capacity calculating section configured to calculate individual torque capacities of both second friction-engagement elements on the basis of the total torque capacity and the distribution ratio; and an engagement control section configured to control engagement states of the both friction-engagement elements in accordance with the individual torque capacities.