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:
Aug. 10, 2010
Filed:
Jul. 03, 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 of an automatic transmission having first and second frictional engagement elements that achieve lower and higher speed gear stages respectively, includes a target value determination section setting a rotation speed difference between input and output sides of the frictional engagement element, a total torque capacity calculation section calculating a total torque capacity, a distribution ratio determination section setting a distribution ratio of the total torque capacity to the first and second frictional engagement elements, an individual torque capacity calculation section calculating individual torque capacities respectively required of the first and second frictional engagement elements, and an engagement control section controlling engagement conditions of the first and second frictional engagement elements in accordance with the individual torque capacity. The automatic transmission realizes an up-shift by changeover between first and second frictional engagement elements based on the individual torque capacity during a vehicle power-on travel.