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:
Sep. 17, 2013
Filed:
May. 28, 2008
Tetsuro Shibata, Toyota, JP;
Hideaki Otsubo, Aichi-ken, JP;
Toshiya Oishi, Toyota, JP;
Kiyoshi Kobayashi, Toyota, JP;
Tetsuro Shibata, Toyota, JP;
Hideaki Otsubo, Aichi-ken, JP;
Toshiya Oishi, Toyota, JP;
Kiyoshi Kobayashi, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A control device for a vehicular automatic transmission is provided which can preferably execute backpressure control of accumulators and torque-up control so as to minimize the occurrence of interference between learning on these controls during a gearshift operation. With the control device for the vehicular automatic transmission including the accumulators (and) operative to control a hydraulic pressure supplied to second and third clutches (Cand C) and a third brake (B), the backpressure control is executed for controlling a backpressure of the accumulators (and) during the gearshift operation while the torque-up control is executed for raising torque output from an engine (). Completion of learning on the backpressure control is determined when no completion of learning on the backpressure control is determined, learning on the backpressure control is executed with no execution of the torque-up control. Thus, no interference occur between learning on the backpressure control and the torque-up control.