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:
Apr. 28, 2015
Filed:
Jun. 28, 2006
Yuji Katsumata, Kawasaki, JP;
Satoshi Segawa, Atsugi, JP;
Yuji Katsumata, Kawasaki, JP;
Satoshi Segawa, Atsugi, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A torque converter () connecting an engine () and a transmission () of a vehicle is provided with a lockup clutch (), and a controller () is programmed to increase an engagement force of a lockup clutch () under open loop control before shifting to feedback control of the engaging force using a target slip rotation speed. When an engine output torque rapidly decreases during open loop control (S, S), the controller () decreases the engaging force according to a variation amount of the engine output torque (S, S), thereby preventing an unintentional sudden engagement of the lockup clutch () due to decrease in the engine output torque.