A SUSPENSION SYSTEM FOR A VEHICLE

摘要

A vehicle air suspension has control means including an ECU (27) and a valve block (28) operatively connected to air springs (15, 16, 17, 18) to maintain the ride height between sprung and unsprung parts of the vehicle adjacent to each air spring at a particular setting. The control means provides for each air spring a respective up signal tending to increase the ride height and a respective down signal tending to decrease the ride height. If the vehicle becomes partly supported by direct contact between the chassis (21) and the ground (belly-out), this is detected by monitoring signals from the ECU to ride height control valves in the valve block. If a down signal exists for more than a predetermined time the down signal is ceased and normal conditions are restored by providing a controlled re-inflation and balancing of the air springs. $$