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:
May. 15, 2007
Filed:
Sep. 10, 2002
Hideyuki Saeki, Kanagawa, JP;
Kouichi Shimizu, Kanagawa, JP;
Hideyuki Saeki, Kanagawa, JP;
Kouichi Shimizu, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A vehicle comprises a motor () and a wet clutch () for transmission of torque output of the motor to road wheels of the vehicle and transmission of road load from the road wheels to the motor (). The wet clutch is disengaged in response to a clutch disengagement control signal. Accounting for clutch drag state of the wet clutch, a controller () selects one out of various values as threshold (Voff). The controller () determines that the wet clutch be disengaged when a parameter indicative of the actual vehicle speed has a predetermined relationship with the threshold. The controller () generates the clutch disengagement control signal upon determining that the wet clutch be disengaged.