Hydraulically damped engine mount
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United States of America Patent
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Apr 7, 1992
Grant Date -
N/A
app pub date -
Nov 15, 1990
filing date -
Dec 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hydraulically damped engine mount comprises liquid-filled working and equalization chambers 1, 2 which are separated by a resilient partition wall 3 and connected by a damping opening 4. The axially opposing working chamber 1 and the equalization chamber 2 are bounded by essentially non-deformable pistons, the latter being connected to a centrally disposed, annular fitting by means of an liquid-impermeable and elastically deformable annular body. These pistons are rigidly joined to one another by means of a connecting rod 7. The piston 9 bounding the equalization chamber 2 has a piston surface which is at least as large as the piston surface of the partition wall 3. The annular body corresponding to this piston is a first rolling membrane 6 which is curved in the axial direction toward the outside and the partition wall 3 is a second rolling membrane which is curved in the axial direction to extend into the working chamber 1. At its inside, this second rolling membrane is affixed liquid-tight to the connecting rod 7.
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