Hydroelastic shim for fixing engine to body shell of motor vehicle, has mobile wall carried by actuator that is fixed to basin and that is electrically controlled for displacing wall in order to regulate pressure in chambers

摘要

#CMT# #/CMT# The shim has a rigid basin forming a base, and an elastic element (6) and a mobile wall fixed to the basin for conjointly defining deformable chambers (12, 13) which encloses liquid. The wall is brought closer or elongated from the base of the basin for compensating liquid pressure variations. The wall is carried by an artificial muscle actuator that is fixed to the basin and that is electrically controlled for displacing the wall in order to regulate the pressure in the chambers. #CMT# : #/CMT# An independent claim is also included for a system comprising a hydroelastic shim. #CMT#USE : #/CMT# Hydroelastic shim for fixing an engine to a body shell of a motor vehicle. #CMT#ADVANTAGE : #/CMT# The actuator carries the wall and is electrically controlled for displacing the wall in the direction of chambers in order to regulate the pressure in the chambers, thus avoiding that the liquid pressure does not reach saturation vapor pressure which causes liquid cavitation phenomenon, and hence reducing noises produced by the shim so as to avoid hindrance for passengers situated in a cab interior of a motor vehicle. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a hydroelastic shim by a flowchart illustrating a sequence for controlling an actuator. 2, 3 : Screws 6 : Elastic element 8 : Ferrule 12, 13 : Chambers 16 : Surface.