TORQUE TRANSMISSION START POINT LEARNING METHOD AND TORQUE TRANSMISSION START POINT LEARNING DEVICE FOR AUTOMATIC CLUTCH

摘要

PROBLEM TO BE SOLVED: To provide a torque transmission start point learning method and a torque transmission start point learning device for an automatic clutch without giving discomfort feeling to an occupant while implementing the learning operation of the torque transmission start point during the travel of a vehicle.;SOLUTION: A clutch stroke position as of an engine speed change in the disconnection operation of the automatic clutch 2 is acquired as a torque transmission end temporary point. The torque transmission end temporary point is corrected according to an engine drive state such as an engine speed to calculate a torque transmission end point. The clutch stroke position is acquired by correcting the torque transmission end point by using an amount of hysteresis in the connection operation and disconnection operation of the clutch as a correction amount, and the clutch stroke position is learned as a torque transmission start point.;COPYRIGHT: (C)2009,JPO&INPIT