Fluid-filled engine mount having orifice passages for damping di

Details Fluid-filled engine mount having orifice passages for damping di Fluid-filled engine mount having orifice passages for damping di

1996-06-28

1997-06-17

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, F14F 1300, F16M 100

Patent

active

056390734

ABSTRACT:
A fluid-filled elastic engine mount for a motor vehicle having an engine, comprising a first and a second mounting member which are connected by an elastic body that partially defines a pressure-receiving chamber, a flexible diaphragm member which partially defines an equilibrium chamber, and orifice means for effecting fluid communication between the pressure-receiving and equilibrium chambers. The orifice means defines a first and a second orifice passage which are respectively tuned to adjust respective different components of the idling vibrations of the engine, and a third orifice passage which is tuned to a frequency range lower than that of the engine idling vibrations. The orifice means comprises a movable member which partially defines one of the first and second orifice passages which is tuned to adjust one of the different components of the idling vibration whose frequency is higher than the other of the different components, the movable member restricting an amount of flow of fluid through one of the first and second orifice passages. The engine mount further comprises valve means for selectively enabling or disabling both of the first and said second orifice passages simultaneously for permitting or inhibiting the fluid communication between the two chambers.

REFERENCES:
patent: 5123635 (1992-06-01), Bouhours
patent: 5310169 (1994-05-01), Kojima
patent: 5397113 (1995-03-01), Kojima et al.
patent: 5427361 (1995-06-01), Suzuki et al.

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