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. 04, 2007
Filed:
Sep. 22, 2005
Yuzuru Tohta, Yokohama, JP;
Hiroyuki Takenaka, Yamato, JP;
Kenichiro Murakami, Atsugi, JP;
Osamu Sato, Fujisawa, JP;
Yuzuru Tohta, Yokohama, JP;
Hiroyuki Takenaka, Yamato, JP;
Kenichiro Murakami, Atsugi, JP;
Osamu Sato, Fujisawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
JATCO Ltd, Fuji-shi, JP;
Abstract
A torque converter lockup capacity control device is configured to conduct coast-time lockup control during coast-running in order to prevent engine stall, shock from occurring in the output shaft of a transmission due to lockup when a driver releases an acceleration pedal and the running condition switches from a drive running condition to a coast-running condition. Torque converter lockup occurs because the engine output torque drops from a time on when the throttle opening degree becomes zero. Thus, during a period from the time on until fuel cut-in at time, the lockup capacity is lowered to a minimum capacity corresponding to a standby pressure and lockup is avoided. The lockup capacity is raised to a larger value from the predetermined time on, and ordinary coast-time lockup control is executed.