Hydrodynamic clutch device

Details Hydrodynamic clutch device Hydrodynamic clutch device

2008-06-24

2008-06-24

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

C192S070280, C192S113360

Reexamination Certificate

active

07389861

ABSTRACT:
A hydrodynamic clutch device includes a clutch housing connected to a drive, a pump wheel connected to the clutch housing, and a turbine wheel connected to a takeoff, the turbine wheel and the pump wheel forming a hydrodynamic circuit. A bridging clutch which is essentially surrounded by the hydrodynamic circuit includes a piston and at least one friction surface which can be acted on by the piston to connect the drive to the takeoff independently of the hydrodynamic circuit, the piston having one surface facing the hydrodynamic circuit and an opposite surface facing a pressure space. A pressure circuit includes a first pressure medium line to supply the hydrodynamic circuit with clutch fluid and a second pressure medium line to supply the pressure space with clutch fluid. A seal at least reduces the exchange of fluid between the hydrodynamic circuit and the pressure space, and a throttle allows a defined exchange of fluid between the hydrodynamic circuit and the pressure space.

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Search Report dated Dec. 12, 2004 for German Application No. 10 2004 060 256.5.
Search Report dated Mar. 22, 2006 for the corresponding European Application No. 05 026 295.5-2421.

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