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. 23, 2012
Filed:
Aug. 27, 2008
Sei Kojima, Okazaki, JP;
Satoshi Kamijo, Nishikamo-gun, JP;
Shinya Toyoda, Nisshin, JP;
Susumu Moritomo, Toyota, JP;
Sei Kojima, Okazaki, JP;
Satoshi Kamijo, Nishikamo-gun, JP;
Shinya Toyoda, Nisshin, JP;
Susumu Moritomo, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An ECU executes a program including the steps of: learning a differential pressure of a lock-up clutch; determining whether or not learning has been completed when a vehicle is in a coasting state and a brake is applied; lowering the lock-up differential pressure such that the lock-up clutch can be disengaged immediately and prohibiting or suppressing control for increasing transmission gain when learning has been completed; and increasing a lower limit guard value for the lock-up differential pressure and performing control for increasing the transmission gain when learning has not been completed.