VS - Transmission Systems Dual-Mass Flywheel DMF valeoscope

8.3 Flexible flywheel The crankshaft bends under the force of the strong combustions inside the engine cylinders. This generates an axis wobbling on the flywheel, which is bolted to the end of the crankshaft. Stress occurs between the bearings and the crankshaft, generating vibrations. If not filtered, the result is a roaring noise caused by the engine, a flywheel axial vibration and a potential increased vibration on the clutch pedal.

The flexible flywheel filters the axial vibrations transmitted through the engine crankshaft. This is achieved by adding a flexible plate at the engine side of the flywheel mass. Deformation of the crankshaft continues, but is not transmitted to the flywheel thanks to the flexible plate. l Reduced engine noise at high engine speeds l Reduced bending stress on crankshaft l Reduced level of vibration on the clutch pedal

System without flexible flywheel

System with flexible flywheel

Flexible flywheel, view from the crankshaft side

Flexible flywheel, view from the clutch side

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