User Guide

In contrast, 4-cylinder engines induce higher irregularities
and consequently higher resonance speeds. Repositioning
of the springs towards the outer edge and the use of
high-pressure spring diameters increased the damper
capacity fivefold without requiring more space.
The configuration of the springs in the first-generation
DMF was identical to conventional torsion dampers, where
the pressure springs are mounted in a radial direction
close to the centre and can therefore provide only limited
spring capacity. This design was sufficient to isolate
vibration in 6-cylinder engines, as these produce low
resonance speeds.
DMF function diagram
1985 Today
n Primary mass
n Spring/damper system
n Secondary mass