A method for limiting the amount of energy dissipated in a friction clutch during engagement of the clutch

摘要

Limiting the amount of energy dissipated in a friction clutch 13 drivingly connecting an engine 10 to a transmission 12 in which a target engine speed NT is set and the engine 10 is controlled based upon the set target engine speed NT. The target engine speed NT is not fixed but variable based at least partially upon the input speed to the transmission 12 and the engagement state of the clutch 13 so as to smoothly transition the engine speed NE towards the speed NI of an input to the transmission 12. As the clutch 13 is engaged the target engine speed NT converges with an input speed NI of the transmission 12 to a value slightly above the input speed NI of the transmission 12. The engine speed may be controlled to match the current and target engine speeds of the motor vehicle. The system may work in conjunction with a launch system.