Active Mount Control
The Escape Hybrid is equipped with a semi-active, vacuum operated, electronically controlled engine mount. The semi-active mount is located on the bulkhead side of the engine. The semi-active mount has 2 fluid filled chambers with a variable orifice between both chambers. This mount changes state based on the engine speed that is calibrated in the PCM. When the engine RPM is at or below a calibrated value, vacuum is applied to the mount, which increases the size of the orifice, making the mount softer. When the engine RPM is greater than the calibrated engine RPM, the vacuum supply is closed and the vacuum in the mount is bled to atmospheric pressure, which decreases the size of the orifice, making the mount firmer.