Device to suppress firing impulse torque induced vibrations in internal combustion engines

摘要

A device is set forth to suppress vibrations relating to intermittent or uneven piston firing impulse torque in an internal combustion engine. The device is particularly adapted as an after market device for motorcycle engines and includes first and second plates secured to the engine crankshaft and to the engine's drive sprocket. Inertial rings are biased to, in cooperation with friction discs, frictionally couple the plates and rings for mutual rotation below pre-selected shaft torques. Firing impulses resulting in torques exceeding the predetermined value will cause the plates to rotate, restrained by friction, relative to inertial rings to suppress torque related vibration.