Fluid coupling i.e. viscous coupling, for use in drive train, has chamber causing transmission of drive power from primary wheel to secondary wheel, and lockup clutch mechanically locking primary and secondary wheels against each other

摘要

The coupling has a primary wheel (1) for driving a secondary wheel (2), where the primary and secondary wheels together form a working chamber (3). A lockup clutch (4) mechanically locks the primary and secondary wheels against each other. The chamber causes transmission of drive power from the primary wheel to the secondary wheel by filling the chamber with a rheologic fluid, where viscosity of the fluid is changeable by applying a magnetic and/or electrical field. The lockup clutch is closed by the primary and secondary wheels during synchronous speed. An independent claim is also included for a method for filling a pressure system i.e. compressed air system.