Patent ID: 6640946
Filing Date: 2003-11-04
Classification: F16H

Abstract:
A hydrodynamic clutch arrangement comprising a housing arrangement, a turbine wheel in said housing arrangement, and a lock-up clutch arrangement for selectively producing a torque transmitting connection between the turbine wheel and the housing arrangement, said lock-up clutch arrangement comprisingtwo friction members which are rotationally fixed with respect to one of said housing arrangement and said turbine wheel, said friction members having friction surface regions, said friction surface regions having an outer radius ra and an inner radius ri, a counter-friction member which is interposed between said friction members and is rotationally fixed with respect to the other of said housing arrangement and said turbine wheel, said counter-friction member having friction surface regions which can be brought into contact with said friction surface regions of said friction members, said counter friction member comprising an annular counter-friction member body having an outer radius Ra and an inner radius Ri, wherein at least one of the following relationships holds: Ra/ra=1.1 to 1.5, and Ri/ri=0.4 to 0.8.