Coupling arrangement for transferring drive torque from drive shaft to fan wheel for internal combustion engine cooling system of motor vehicle, has liquid friction clutch transmitting drive torque from drive shaft to output element

摘要

The arrangement (1) has a liquid friction clutch (4) transmitting drive torque from a drive shaft (2) to an output element (8) i.e. pulley. The friction clutch is arranged parallel to a friction disk clutch (10) such that the torque is transmitted through the friction clutch when the disk clutch is disengaged. The friction clutch is bypassed by the disk clutch. The output element is coupled to a secondary side (5) i.e. power takeoff side, of the friction clutch. The secondary side is frictionally coupled with the drive shaft by the disk clutch. The friction disk clutch is designed as a single-stage clutch such as single-stage electromagnetic clutch, or a multi-stage clutch. The liquid friction clutch is designed as a visco clutch, a hydraulically or pneumatically steered clutch, an uncontrolled clutch, a bimetal steered clutch or an electromagnet-steered clutch.