Control system for an electromagnetic clutch for a vehicle.

摘要

A system for controlling a drag torque of an electromagnetic clutch during idling operation of the engine for a motor vehicle with a continuously variable belt drive transmission. A detector is provided for detecting whether engine speed is higher or lower than a predetermined idling speed. When the engine speed is above the predetermined speed, a standard current is passed through the coil of the clutch. Below the predetermined speed the drag current is gradually reduced until the engine speed increases to the predetermined idling speed.