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Abstract: Focusing on the problems of magnetorheological (MR) damper
for vehicle, in the wear and leakage of oil-seal, the sedimentation of
MR fluid and magnetic circuit structure, the improvement measures
correspondingly by installing a mono-direction slide valve, a guiding
and sealing device, an anti-sedimentation device, and an electromagnetic
piston with multi-stage magnetic circuit structure are put forward in a
new prototype design. Taking the front damper of Passat B5 car as
example, the electromagnetic circuit and hydraulic structure of the MR
damper are improved and designed. The prototype experiments are carried
out. The damping characteristics of the prototype are analyzed and
compared with those of the original passive damper. The results show the
feasibility and validity of MR damper with twin tubes and slide valve.
Key words: Vehicle Semi-active suspension Magnetorheological
Damper
CLC No: TF125.8
Received
20030110, received in revised form 20030810
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