1. Novelties

2. Dual Mass Flywheel DMF Technology at a glance
Technical requirements:
Higher torque levels
Higher ignition pressures
Stricter emission controls
Greater requirements for comfort and noise control
Protection of gearbox and vibration-sensitive vehicle components
all require extremely high-performance torsional dampers

3. Dual Mass Flywheel (DMF)
planet wheel
secondary flywheel
primary flywheel
spring tuning parameters

4. Conventional Powertrain
Conventional Powertrain
RPM Fluctuation
engine
transmission
Time
Engine
Transmission
Vibration damping

5. Powertrain with Sachs Planetary DMF
Engine
Transmission
RPM Fluctuation
engine
transmission
Vibration damping
Time

6. Torsion damper set Sachs (tensionless state)

7. Torsion damper set Sachs (first grade stopper)

8. Torsion damper set Sachs (second grade stopper)

9. Dual Mass Flywheel DMF Torsion damper set Sachs
The spring pans and sliding shoes are there to avoid blockade of the springs and with it the damage; at the same time sliding friction is acting as a damping.
Second stage
First stage
First stage
Second stage
Torque (Nm)
Torsion angle (°)