Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1987-06-29
1988-12-06
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
248636, 248562, F16M 100
Patent
active
047891424
ABSTRACT:
A hydraulic mount assembly is disclosed having a partition including a 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 by moving around an orifice track and/or by bypass around the decoupler causing expansion and contraction of the diaphragm. A magnetic coil is provided adjacent the diaphragm in alignment with the decoupler to supply a controlling magnetic field. The decoupler is made of a magnetic material and is positionally responsive to the variations in the intensity and direction of the controlling magnetic field. By actively controlling the decoupler position 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 voltage to the magnetic coil 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: 4583723 (1986-04-01), Ozawa
patent: 4650170 (1987-03-01), Fukushima
Hoying John F.
Smith Stanley E.
General Motors Corporation
Kashnikow Andres
Le Mark T.
Phillips R. L.
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