NOTE: This file replaces the file ViscoKupplung.gif by a vector image file (SVG)
Schematics of a viscous coupling which transfers torque and rpm from the input shaft (2) to the differential (D) at the axle.

The viscous coupling consists of a housing (2), which also the carrier for the outer plates (3) and the output shaft. The coupling is filled with a viscous fluid (5, mostly silicon oil). The outer plates (3) and the inner plates (4) are normally not in contact (except when hump effect is active). An inner plate carrier (6) carries the inner plates and serves at the same time as input shaft. A sealing (7) prevents leakage of fluid and contamination with dust.
Own work
Ralf Pfeifer