| 摘要 |
<p>The clutch releaser of a friction clutch is positionable by means of a positioning servo-drive (15, 17) in dependence upon the position of a clutch pedal detected by means of a position indicator (23). A slip regulator circuit is provided which through the positioning servo-drive (15, 17) regulates a predetermined slip of the clutch in dependence upon the engine rotation rate and the gear input rotation rate for the reduction of torsional vibrations and noises. The slip regulator circuit (51) is an averaging circuit which generates a mean value signal corresponding to the mean value in time of the rotation rate difference between the engine rotation rate and the gear input rotation rate and controls the positioning servo-drive (15, 17) in dependence upon the mean value signal, A control signal disengaging the clutch is generated when the vehicle speed is lower than walking speed and at the same time the gear rotation rate is greater than a comparatively small rotation rate value not occurring in normal driving operation, and further the clutch pedal is not actuated. <IMAGE></p> |
