Glossary “viscous friction” Definition:
Friction between layers of a liquid.

Glossary “viscous drive fan clutch” Definition:
Belt driven, water-pump mounted, liquid-filled or thermostatically controlled cooling fan clutch that drives the fan fast at high temperatures and slow at low temperatures.

Glossary “viscous converter clutch (VCC)” Definition:
Torque converter clutch that uses a silicone fluid to transfer and multiply torque, the silicon absorbs shock and dampens engine vibration during clutch application.

Glossary “viscous fan” Definition:
Cooling fan attached to a viscous coupling.

Glossary “viscous coupling” Definition:
Coupling device having input and output shafts fitted with thin, alternating discs in a closed chamber filled with a viscous fluid.

Glossary “viscous damper” Definition:
Type of crankshaft harmonic balancer that contains a liquid to control engine vibration.