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US 10,837,500 B2Granted
Fluid friction clutch
AssigneeBorgWarner Ludwigsburg GmbH
InventorsThomas Buchholz, Wolfgang U. Sorg
Life of this patent
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Abstract
This disclosure relates to a fluid friction clutch having a housing, a clutch disc which is arranged at one end of a shaft which is mounted within the housing, a working chamber which is configured between the housing and the clutch disc, a storage chamber for clutch fluid, and at least one feed duct which leads from the storage chamber to the working chamber. Moreover, a pressure relief device for discharging clutch fluid from the feed duct into the storage chamber is provided.
Claims17
A fluid friction clutch, comprising:
- a housing;
- a shaft mounted within the housing;
- a clutch disc arranged at one end of the shaft;
- a working chamber between the housing and the clutch disc;
- a storage chamber configured to store clutch fluid;
- a feed duct leading from the storage chamber to the working chamber;
- a pressure relief configured for discharging clutch fluid from the feed duct into the storage chamber wherein the pressure relief comprises a pressure relief opening in the clutch disc in a region of the feed duct and a valve having a closing device for closing the relief opening;
- an outlet opening in the clutch disc located in a region of a radial end of the working chamber, the closing device configured to also close the outlet opening;
- and
- wherein the valve is configured to close the pressure relief opening and the outlet opening of the working chamber with a single closing movement of the closing device to thereby fill the working chamber.
7 more elements
A fluid friction clutch, comprising:
- a housing;
- a shaft mounted within the housing;
- a clutch disc arranged at one end of the shaft;
- a working chamber between the housing and the clutch disc;
- a storage chamber configured to store clutch fluid;
- a feed duct leading from the storage chamber to the working chamber;
- wherein the storage chamber is divided into a filling chamber and a retaining chamber and
- an annular retaining panel arranged in the storage chamber that divides the storage chamber into the filling chamber and the retaining chamber, wherein engagement of the retaining panel with a housing cover and a housing body centers the retaining panel with regard to a rotational axis of the shaft.
5 more elements
Dependencies are inferred from the claim text.