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. 09, 2003
Filed:
Jun. 19, 2001
Masahiko Hayashi, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
Clutch disengagement shock resulting from the sudden release of torsional torque is prevented and ride-feeling at the time of changing gears or starting at a low-speed gear stage in an automatic clutch vehicle is improved. In a clutch control arrangement for controlling the engagement and disengagement of a friction-type clutch ( ) by means of a clutch actuator ( ) and a control unit ( ), clutch disengagement speed is reduced when, at least, a gear-changing operation by a driver is detected, and the transmission ( ) is in a low-speed gear stage. Even when the clutch is automatically disengaged at gear change, since disengagement speed is reduced if the current gear stage is a low-speed gear stage, the clutch ( ) is not abruptly disengaged, enabling the prevention of clutch disengagement shock due to the sudden release of torsional torque. Because high torsional torque is normally transmitted to the drive system when either the clutch is in a partly engaged state or the accelerator stroke is large, it is desirable to reduce disengagement speed in these states.