Auxiliary machine drive system of automatic engine stop-restart system equipped automotive vehicle

摘要

In an auxiliary machine drive system of an automatic engine stop-restart system equipped automotive vehicle capable of automatically stopping or restarting an engine (10) depending on vehicle operating conditions, an electromagnetic clutch (26) is disposed between the engine and at least one auxiliary machine (20) for connecting and disconnecting an engine crankshaft (10a) to and from the auxiliary machine. An electromagnetic clutch control unit (35) deenergizes the electromagnetic clutch at least in an engine running state, and energizes it only when a predetermined energizing condition is satisfied. The predetermined energizing condition includes at least an engine stopped state. The electromagnetic clutch is comprised of a normally-engaged electromagnetic clutch that is engaged when deenergized, and disengaged when energized.