CONTROL METHOD FOR CLUTCH

摘要

PROBLEM TO BE SOLVED: To stabilize feeling and provide compatibility between engagement shock and engagement time during clutch gentle contact irrespective of individual differences or the like of clutches. SOLUTION: The method controls engagement and disengagement of a wet friction clutch by changing a working fluid pressure for driving the engagement and disengagement of the clutch in response to a duty pulse outputted from an electronic control unit. In engagement of the clutch, first a start duty Dst of largely contacting the clutch until it is near a torque point is outputted and then a gradual contact duty Dk of gradually contacting the clutch is outputted every predetermined timeΔt. A value of the gradual contact duty is determined on the basis of an input and output side rotational differenceΔN of the clutch. Since the clutch can be gradually contacted while constantly monitoring an engagement state of the clutch, dispersion of engagement shocks and engagement times due to individual differences or the like can be resolved and feeling can be stabilized.