Vibrations that occur in the drivetrain of a vehicle can be heard as low engine-speed rattle and droning. To counteract this, LuK developed the dual-mass flywheel and made it production-ready back in 1985. It reduces vibrations in the drivetrain and delivers smooth operation.A conventional flywheel consists of a single rigid part. A DMF, on the other hand, consists of two masses mounted so they can rotate against each other.Integrated into the DMF is a spring and damper systems that almost completely absorbs the torsional vibration from the engine.This way, the DMF meets increasing demands from car owners for driving comfort.