Torsional vibration damping device, particularly for crankshaft of internal-combustion engine, has electrical power unit provided to generate electrical power by relative motion between internal element and external element

摘要

The torsional vibration damping device has an internal element (2) and an external element (3), which is rotatably arranged to the internal element. An electrical power unit (4) is provided to generate an electrical power by a relative motion between the internal element and the external element. The power unit has a permanent magnet unit (5).