Viscous clutch drive with electromagnetic activation and wiper on clutch disk

摘要

Viscous fan drive systems with wiper members positioned on the OD of the clutch disks, and which rotate at high speed. The fluid reservoir also rotates at input speed. The wiper member directs viscous fluid radially back to the fluid reservoir. The valves in the viscous fan drive systems can be activated by an electromagnetic mechanism.

主权项

1. A viscous clutch drive comprising:
a housing, said housing being an output of said viscous clutch drive; a rotatable clutch disk member positioned in said housing, said clutch disk member being coupled for rotation with an input of said viscous clutch drive; a working chamber comprising said housing and said clutch disk member; a fluid reservoir cover coupled to said clutch disk member and rotatable therewith, said clutch disk member and said fluid reservoir cover cooperating to define a fluid reservoir; a wiper member located on an outer circumferential surface of said clutch disk member; a valve member in said fluid reservoir and disposed in a fluid communication path between said fluid reservoir and said working chamber; and a solenoid assembly having a coil and a solenoid output member, wherein said valve member is coupled to said solenoid output member for movement therewith.