| 摘要 |
A vehicular centrifugally operated master friction clutch (20) for coupling an engine (18) to a transmission input shaft (28). The clutch includes flyweights (110) pivoted to a driving member (60) rotatable with the engine. Rollers (120) fixed to the flyweights act on ramp surfaces (148) to apply an axial clamping force (CF) to friction member of the clutch driving and driven member. The clamping force is applied through a spring compression (132) to limit the magnitude of clamping force.
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