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:
Aug. 21, 2001
Filed:
Mar. 22, 2000
Masahiko Hayashi, Fujisawa, JP;
Junichi Imai, Fujisawa, JP;
Kazuhiko Kobayashi, Kawasaki, JP;
Hiroyuki Arai, Kawasaki, JP;
Other;
Abstract
A method for automatic control of a friction clutch (,) in a vehicle, which clutch is designed to be disengaged and engaged by a clutch actuator (,) under automatic control. An initial partially engaged clutch stroke position (Q,) and an initial clutch stroke position (P,) at which fluid pressure in the clutch actuator reaches a prescribed value are detected to obtain a difference (R,) between said two clutch stroke positions prior to initiation of automatic clutch control. The friction clutch wears as it is used. Therefore, both of the partially engaged clutch stroke position and the clutch stroke position attaining the prescribed fluid pressure value change while the automatic clutch engagement/disengagement control is being performed. However, the difference between these two clutch stroke positions does not change. A current clutch stroke position attaining the predetermined fluid pressure is only detected during the automatic clutch control, and a current partially engaged clutch stroke position (Q,) is determined by adding the difference (R,) to the detected clutch stroke position (P,).