Alternator's rotating shaft decoupling device for motor vehicle, has friction and centrifugal clutches allowing motor and alternator to rotate rotating and crank shafts when speed of motor is higher and lower than preset value, respectively

摘要

The device (62) has a primary decoupling unit i.e. single disc electromagnetic type controlled friction clutch (64) permitting a motor to drive a rotating shaft (60) of an alternator when the rotation speed of the motor is higher than a preset value. A secondary decoupling unit i.e. centrifugal clutch (64) permits the alternator to rotate a crank shaft of a combustion engine, when the rotation speed of the motor is lower then the value. A control unit of the premier unit controls the decoupling of the rotational shaft when the speed of the motor is higher than the value.