초록 ▼

A clutch arrangement, especially for a motor vehicle, comprising a housing arrangement (12) which is filled or which can be filled with fluid, at least one first friction element (22) which can be jointly rotated with the housing arrangement (12) and at least one second friction organ (24) which can

A clutch arrangement, especially for a motor vehicle, comprising a housing arrangement (12) which is filled or which can be filled with fluid, at least one first friction element (22) which can be jointly rotated with the housing arrangement (12) and at least one second friction organ (24) which can be jointly rotated with an output element (18) and which can be brought to rest against the at least one first friction element (22) in order to produce at least one interactive friction effect. At least one friction element (22, 24) is embodied in such a way that fluid can circulate around at least certain areas of the friction elements (22, 24).

대표청구항 ▼

1. A clutch arrangement comprising:a housing which can rotate about an axis and is at least substantially filled with fluid; at least one first friction element which is fixed against rotation with respect to the housing; an output element which can rotate about said axis with respect to said housin

1. A clutch arrangement comprising:a housing which can rotate about an axis and is at least substantially filled with fluid; at least one first friction element which is fixed against rotation with respect to the housing; an output element which can rotate about said axis with respect to said housing; and at least one second friction element which is fixed against rotation with respect to the output element and can frictionally engage at least one said first friction element; wherein at least one said first friction element and at least one said second friction element each have a plurality of fluid conveying surfaces and a plurality of axially extending fluid passage openings, said fluid conveying surfaces each having a radial component and an axial component, said fluid conveying surfaces of said first friction element guiding fluid radially outward and said fluid conveying surfaces of said second friction element conducting the fluid radially inward when the housing rotates faster than the output element, thereby causing a circulation of fluid around at least some areas of said friction elements via said fluid passage openings. 2. A clutch arrangement as in claim 1, wherein each said fluid conveying surface has at least one region with a surface perpendicular oriented tangentially to a circumferential circular line.3. A clutch arrangement as in claim 1, wherein at least one of said first and second friction elements has at least one axial side provided with a friction lining having at least one said fluid conveying surface.4. A clutch arrangement as in claim 3, wherein each said friction lining has a groove-like channel with at least one circumferentially extending wall forming a respective said fluid conveying surface.5. A clutch arrangement as in claim 3, wherein at least one of said first and second friction elements has a friction lining having at least one fluid conveying surface provided on both axial sides.6. A clutch arrangement as in claim 3, wherein at least one of said first and second friction elements has a first axial side provided with a friction lining having at least one said fluid conveying surface, and a second axial side without friction lining, a further at least one of said friction elements having a friction lining facing said second axial side.7. A clutch arrangement as in claim 1, wherein at least one of said first and second friction elements comprises a friction lining carrier having at least one axial side carrying a friction lining and having at least one said fluid conveying surface.8. A friction clutch arrangement as in claim 7, wherein each said friction lining carrier has a plurality of circumferentially arranged lining carrying sections connected by connecting sections so that adjacent lining carrying sections are axially offset, each said connecting section providing a respective said fluid conveying surface.9. A friction clutch arrangement as in claim 8, wherein each said friction lining carrier is formed from an essentially ring-like sheet metal blank.10. A friction clutch arrangement as in claim 8, wherein said friction lining comprises a plurality of lining segments and wherein adjacent lining carrying sections have oppositely facing axial sides, each said side carrying a respective lining segment.11. A fluid clutch arrangement as in claim 1, wherein said fluid conveying surfaces are circumferentially arranged.12. A fluid clutch arrangement as in claim 1, further comprising a pressing element for bringing said first and second friction elements into frictional engagement, said housing having an interior region which is divided into a first space region and a second space region by said pressing element, said first space region containing said friction elements.13. A fluid clutch arrangement as in claim 12, further comprising a fluid flow arrangement which can feed fluid into said first space region and remove fluid from said first space region essentially independently of said circulation of fluid.14. A fluid clutch arrangement as in claim 12, wherein said first space region is sealed off from said second space region with respect to fluid exchange.15. A fluid clutch arrangement as in claim 12, further comprising means for introducing fluid into said second space region so that said pressing element produces said frictional engagement.16. A friction clutch arrangement as in claim 12, further comprising an actuating arrangement provided outside of said housing for acting on said pressing element in order to produce said frictional engagement.17. A friction clutch arrangement as in claim 1, wherein at least one of said first and second friction elements comprises a friction lining carrier having a tab-like bent section which causes said fluid to circulate.18. A friction clutch arrangement as in claim 1, wherein each said at least one of said first and second friction elements comprises 6 to 48 fluid conveying surfaces.19. A fluid clutch arrangement as in claim 1, wherein each said fluid-conveying surface has an internal diameter d, an external diameter D, and a ratio d/D of 0.35 to 0.85, said fluid clutch arrangement further comprising an outer fluid deflecting space lying outside of said fluid conveying surface and having an external diameter D, with a ratio Da/D of 1.03 to 1.20, and an internal fluid-deflecting space with an internal diameter di with a ratio di/d of 0.4 to 0.9.20. A fluid clutch arrangement as in claim 1, wherein each said first friction element has a region of axial extent contributing to said circulation and having a first axial dimension, and wherein each said second friction element has a region of axial extent contributing to said circulation and having a second axial dimension, the ratio of the first axial dimension to the second axial dimension being 0.5 to 1.2.21. A clutch arrangement as in claim 1, further comprising a friction lining arrangement provided on at least one of said first and second friction elements, said friction lining having an internal dimension dB and an external dimension DB in a ratio dB/DB of 0.6 to 0.9.22. A friction clutch arrangement as in claim 1 wherein said housing is completely filled with said fluid.23. A friction clutch arrangement as in claim 1 wherein said fluid is an oil-like liquid.24. A friction clutch arrangement as in claim 1 wherein each said first friction element has a plurality of radially outward extending coupling projections which engage said housing.25. A friction clutch arrangement as in claim 24 wherein said axial through passages of said at least one first friction element are between said coupling projections.26. A friction clutch arrangement as in claim 1 wherein each said second friction element has a plurality of radially inward extending coupling projections which engage said output element.27. A friction clutch arrangement as in claim 26 wherein said axial through passages of said at least one second friction element are between said coupling projections.28. A clutch arrangement comprising:a housing which can rotate about an axis and is at least substantially filled with fluid; at least one first friction element which is fixed against rotation with respect to the housing; an output element which can rotate about said axis with respect to said housing; and at least one second friction element which is fixed against rotation with respect to the output element and can frictionally engage at least one said first friction element; a pressing element arranged displaceably in said housing for bringing said first and second friction elements into frictional engagement, and an actuating arrangement provided outside of said housing for acting on said pressing element in order to produce said frictional engagement; wherein at least one said first friction element and at least one said second friction element each have a plurality of fluid conveying surfaces and a plurality of axially extending fluid passage openings said fluid conveying surfaces each having a radial component and an axial component, said fluid conveying surfaces of said first friction element guiding fluid radially outward and said fluid conveying surfaces of said second friction element conducting the fluid radially inward when the housing rotates faster than the output element, thereby causing a circulation of fluid around at least some areas of said friction elements via said fluid passage openings. 29. A friction clutch arrangement as in claim 28, wherein said housing is sealed off with respect to exchange of fluid.30. A clutch arrangement as in claim 28, further comprising a torsional vibration damper in at least one of a torque transmission path between a drive element to be coupled to the housing and the at least one first friction element, and a torque transmission path between the at least one second friction element and the output element.31. A clutch arrangement as in claim 28, further comprising a starter generator arrangement comprising a rotor having a plurality of permanent magnets coupled to the housing for rotation with said housing.