Torsional vibration damper

Details Torsional vibration damper Torsional vibration damper

1997-05-29

1999-08-10

Lillis, Eileen Dunn

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Fluid coupling

192208, F16D 380

Patent

active

059350075

ABSTRACT:
A torque transmission system includes a torsional vibration damper with a centrifugal valve separating first chamber and second chambers filled with fluid. At low engine speeds, the centrifugal valve is spring biased in a substantially closed position so that there is minimal fluid flow between the chambers, thus resulting in high stiffness and high damping for reducing resonance vibrations. As the engine speed increases, centrifugal force eventually overcomes the spring force due to increased engine speeds. Thus, at high engine speeds the centrifugal valve is open, allowing a greater amount of fluid to flow from the first chamber to the second resulting in decreased stiffness and transmissibility for more effectively reducing vibrations.

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Consideration of a New Type Two-Mass Flywheel by Yamamoto et al., 1991.

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