Dry clutch control system using idle drive torque so as to provide vehicle crawl speed

摘要

A control for a vehicle drive line system including an automated vehicle dry master clutch 14 interposed between a fuel controlled engine 12 and an input shaft of a mechanical transmission. At sensed idle conditions THL > REF and OS < REF, if the vehicles brakes are not applied, the engine 12 is commanded to generate an output torque TFW equal to a selected idle drive torque TIDLE at idle speed ES = IDLE, the engine is commanded to rotate at idle speed and the clutch is caused to engage with a torque capacity equal to the idle drive torque of the engine.