Crankshaft belt pulley for transmitting torque between crankshaft and belt drive in drive train of motor vehicle, has switchable freewheel that is arranged between planetary gear and crankshaft

摘要

The crankshaft belt pulley (1) has a belt pulley, a planetary gear (21) and a clutch or braking device (10,28). A switchable freewheel (23) is arranged between the planetary gear and a crankshaft (2). The switchable freewheel is arranged between a sun gear (32) and a planetary carrier (35) of the planetary gear. The planetary carrier is connected with the crankshaft over an outer ring (42) of the switchable freewheel in rotary manner.