The damping-controlled hydraulic mount consists of:
• One conventional hydraulic mount
• One control unit
The hydraulic mount with controlled damping characteristics operates by way of vacuum.
In the basic setting, no vacuum is applied to the hydraulic mount. Bypass (14) is closed. This is achieved by means of
spring (10) pressing a rubber diaphragm against the sealing surface of the nozzle plate.
The hydraulic fluid can only flow back and forth via an annular duct (5) between the upper (17) and lower (15) chamber. The mount acts as a conventional hydraulic mount. The damping characteristics are hard.
The force exerted by the spring is reduced by applying vacuum to the control unit of the mount (12) so that a bypass now opens permanently. The hydraulic fluid can now flow back and forth via a larger cross section between the two chambers. The damping characteristics of the mount are now softer.
