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:
Oct. 01, 2013
Filed:
Nov. 15, 2010
Go Endo, Yokohama, JP;
Masami Suzuki, Mishima, JP;
Go Endo, Yokohama, JP;
Masami Suzuki, Mishima, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
A control system for controlling an automatic transmission that is capable of establishing a given speed stage by engaging a given frictional element. The control system comprises an actual time lag measuring section that measures an actual time lag from the time when a speed change instruction for the given speed stage is issued to the time when a gear ratio of the automatic transmission starts to change for the purpose of establishing the given speed stage, a torque detecting section that detects a torque from an engine, a time lag map that provides a suitable time lag in accordance with the detected torque from the engine, a learning correction section that corrects, by learning control, an instruction value for the hydraulic pressure led to the frictional element in a manner to cause the actual time lag to have the same value as the suitable time lag; and a time lag map correcting section that corrects the suitable time lag in accordance with an operation condition of an associated motor vehicle.