Behr Gmbh Co. Kg

Roland Baumgartner

Ralf Maus

Gerold Schultheiss

A controllable drive () suitable for a motor vehicle coolant pump () comprises a rotatably mounted shaft (), a driven member () which is rotationally fixedly mounted on the shaft (), a driving member () which is mounted so as to be rotatable relative to the shaft (), and a coupling region () which is arranged between the driving and driven members () and holds a viscous fluid. At least one first flow path and at least one second flow path connect a fluid reservoir to the coupling region (), and an actuation device () changes at least one passage opening of at least one flow path. A coupling housing () is connected to the driving member (), and the actuator () is arranged within the coupling housing ().

Controllable drive for a motor vehicle, in particular for a coolant pump

A regulatable drive for a motor vehicle, in particular for a water pump in a motor vehicle, has a rotatably mounted shaft, on which is located a rotatably mounted drive member and a rotationally fixed driven member. Between the drive member and driven member, a coupling region is defined, which can receive a viscous fluid for selectively coupling the drive member and driven member. The regulatable drive includes at least one first and at least one second flow path, which connect a fluid storage space to the coupling region, and it has a device which can be varied in its position by means of at least one actuator and which varies at least one passage orifice of at least one of the flow paths.

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Vaihingenenz, Germany

Roland Baumgartner