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:
Mar. 22, 2011
Filed:
Oct. 10, 2007
Tomoaki Honma, Isehara, JP;
Masaaki Uchida, Yokosuka, JP;
Shusaku Katakura, Fujisawa, JP;
Yoshinobu Kawamoto, Atsugi, JP;
Sadamu Fujiwara, Atsugi, JP;
Tomoaki Honma, Isehara, JP;
Masaaki Uchida, Yokosuka, JP;
Shusaku Katakura, Fujisawa, JP;
Yoshinobu Kawamoto, Atsugi, JP;
Sadamu Fujiwara, Atsugi, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
An automatic transmission control apparatus is provided with a control scheme that focuses on the rotational speed differences of the frictional engaging elements and the distribution of torque transferred by the frictional engaging elements. When the automatic transmission is upshifted while in a power-off state, the individual torque capacity of a frictional engaging element being released and the individual torque capacity of a frictional engaging element being connected are corrected by adding a prescribed torque capacity amount to each of the individual torque capacities during an inertia phase of the shift control in which a compensation is executed for inertia related to changing the gear ratio. In this way, frictional losses are induced in the frictional engaging elements so as to absorb the inertia torque and lower the input rotational speed more quickly.