| 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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