Hydraulic bearing for motor vehicle combustion engine, has membrane positioned to isolate high-frequency, low-amplitude vibrations

摘要

A hydraulic bearing comprises a core (1) and housing (2) joined by a hollow conical elastic spring (3) and a working- (4) and an equalizing- (5) space filled with a damping fluid (6), the spaces being separated from one another by a partitioning wall (7) provided with a damping channel (8) for damping low-frequency (l.f.) high amplitude vibrations. A membrane (13) is positioned in a gap (12) for isolating h.f. low-amplitude vibrations, the membrane being electromagnetically switchable.