Vehicle`s torsional vibration damper, has damping unit for coupling two masses along rotational axis of engine crankshaft, and friction part to rub against inner wall and outer wall of ring shaped chamber

摘要

The damper has a damping unit for coupling two masses in a rotational manner about a rotational axis of an engine crankshaft (12).The damping unit comprises a set of coil springs situated in series and disposed within the divided portions of a ring-shaped chamber (25). A friction part slidably disposed between neighboring coil springs rub against an inner wall and an outer wall of the ring shaped chamber.