Fluid filled engine mount

Details Fluid filled engine mount Fluid filled engine mount

1989-10-11

1991-07-09

Graham, Matthew C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, F16F 900

Patent

active

050298259

ABSTRACT:
An ERF filled engine mount includes a main working chamber and first and second auxiliary chambers. Orifice passages in which electrodes are disposed, fluidly connect the main working chamber with the first auxiliary chamber. A gutter is defined by a casing in which a movable member is disposed. This member is arranged to be moved (vibrated) by the pressure changes which occur in the main working chamber when the mount is subject to vibration which tend to cause cabin reverberation noise. An electrode is mounted on an electrically non-conductive portion of the casing structure and arranged to cooperate with a conductive portion thereof. This electrodes has a voltage impressed thereon during engine idle and shake modes and is de-energized when the reverberation noise inducing frequency is approached.

REFERENCES:
patent: 4583723 (1986-04-01), Ozawa
patent: 4650170 (1987-03-01), Fukushima
patent: 4720087 (1988-01-01), Duclos et al.
patent: 4742998 (1988-05-01), Schubert
patent: 4759534 (1988-07-01), Hartel
patent: 4861006 (1984-08-01), Takano et al.

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