Fluid clutch i.e. viscous clutch, for drive train of road vehicle, has working chamber that is emptyable completely or upto preset balance fluid quantity, and auxiliary chamber connected with chamber by fluid-conductive connection

摘要

The clutch has a drivable primary wheel (1) and a secondary wheel (2) drivable by the primary wheel. The wheels together form a working chamber (3) that causes a transmission of a drive power from the primary wheel to the secondary wheel upon filling with a fluid i.e. rheological fluid, whose viscosity is changeable by applying a magnetic/electrical field. The working chamber is selectively emptyable completely or upto a preset balance fluid quantity. An auxiliary chamber is connected with the working chamber by a fluid-conductive connection. An independent claim is also included for a method for controlling a fluid clutch.