Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1986-11-10
1988-07-12
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
248636, 267195, 267 6428, F16M 500, B60G 1504
Patent
active
047565136
ABSTRACT:
A hydraulic mount assembly is disclosed having a partition including a hydraulic damping decoupler between two hydraulic chambers. One chamber is formed by an elastomeric member and the other by a resilient diaphragm. During dynamic loading of the mount, fluid passes between the two chambers of the mount causing expansion and contraction of the diaphragm. A pneumatic bladder is positioned to exert external pressure against the diaphragm in order to change the damping characteristics of the mount. As the bladder is expanded, the diaphragm is stiffened and the fluid flow between the two chambers in the hydraulic mount is restricted. When the bladder is deflated, the pressure against the diaphragm is reduced or effectively removed thereby restoring full freedom of movement of the fluid in the hydraulic mount. By actively controlling the diaphragm expansion in this manner, the dynamic characteristics of the mount are varied. A control circuit with on-board transducers is provided to monitor vehicle operating and road response conditions and modulate the pressure to the bladder for maximum damping effect. The on-board transducers sense selected parameters to indicate unusual conditions for which modulation is required, such as rough engine operation, engine lugging, rough road conditions, sudden turning and/or rapid acceleration/deceleration.
REFERENCES:
patent: 4294141 (1981-10-01), Miller
patent: 4415148 (1983-11-01), Mair et al.
patent: 4664360 (1987-05-01), Sciortino
patent: 4664363 (1987-05-01), Gold et al.
patent: 4679777 (1987-07-01), Gold et al.
Carlson Eric D.
Muzechuk Richard A.
Smith Jack E.
General Motors Corporation
Kashnikow Andres
Le Mark T.
Phillips R. L.
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