Flywheel device with a torsional damper

A flywheel device with a torsional damper comprising:

• a driving side flywheel;
• a driven side flywheel arranged coaxially with respect to the driving side flywheel and rotatable relative to the driving side flywheel;
• a first spring mechanism directly connecting the driving and driven side flywheels, the first spring mechanism including at least one combination of two first coil springs which are arranged in series with each other as a spring arrangement and which are operatively related to each other so that when a torsional angle between the driving and driven side flywheels increases, both of the first coil springs operate, in combination, up to a predetermined torsional angle and only one of the first coil springs operates above the predetermined torsional angle, the first spring mechanism further including spring seats provided at each end of each first coil spring;
• a second spring mechanism including at least one second coil spring and spring seats provided at each end of each second coil spring;
• and
• a friction mechanism arranged in series with the second spring mechanism as a vibrational system, the series combination of the second spring mechanism and the friction mechanism being arranged in parallel to the first spring mechanism as a vibrational system between the driving and driven side flywheels.