Pressure Accumulator
The twin axle air suspension system now features a pressure accumulator which forms an air accumulator valve unit in combination with the valve. The air accumulator valve unit is located beneath the vehicle floorpan in the right-hand sill area.
Pressure Accumulator Unit which includes:
Pressure Accumulator
Pressure Sensor
Valve Unit
The pressure accumulator decreases the load on the compressor and significantly reduces the time required for large changes in ride height.
The EHC 2 control module monitors system pressure via a pressure sensor mounted on the accumulator. Normal system pressure is 15.7 +/- 0.7 bar. Minimum system pressure is 9 bar.
The pressure accumulator's charge is sufficient to fill the four suspension struts once from the Access position to the normal position and compensate for vehicle load up to maximum gross weight.