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15
8
Dual Mass
Flywheel
technology
evolutions
Modern engines deliver higher torque at lower
speeds for fuel economy. These engines therefore
generate increased vibration. Furthermore, the car
manufacturers demand evermore silent vehicles for
driving comfort. Thus, improved vibration filtering is
mandatory, especially in case of Rear Wheel Drive
(R.W.D.) transmission with engine torques above
400Nm.
Valeo’s technology roadmap addresses
innovative solutions
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D.M.F. with Inner Damper
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Long Travel Damper D.M.F.
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Flexible D.M.F.
8.1 D.M.F. with inner damper
At high engine speeds, the centrifugal load pushes
the springs against the spring guides and creates
friction. Due to this friction between the springs and
the spring guides, the active number of coil springs
is reduced; therefore, the effective spring stiffness is
increased and filtering capacity is reduced.