Patent ID: 11002336

Abstract:
The invention relates to a torsional damper (210) in a clutch disc arrangement (200) arranged to indicate damping performance of the torsional damper (210). The torsional damper (210) comprises a driven plate (211), an output hub (212), intermediate friction plates (213) arranged on either side of the driven plate (211) and a resilient member (214) arranged to press the intermediate friction plates (213) against the driven plate (211) or against the output hub (212) with a pressure force. The intermediate friction plates (213) and the resilient member (214) are rotationally fixed to the output hub (212) or the driven plate (211) forming a rotationally fixed stack (213, 214, 212; 213, 214, 211). The rotationally fixed stack (213, 214, 212; 213, 214, 211) comprises a detection friction plate (215) rotatably decoupled from the rotationally fixed stack (213, 214, 212; 213, 214, 211) and arranged in the rotationally fixed stack (213, 214, 212; 213, 214, 211).