Patent ID: 7441789

Claim:
An air-suspension system for a vehicle, comprising a compressed-air accumulator, a compressed-air delivery device, at least one air-suspension bellows and an electrically activatable changeover-valve device, said electrically activatable changeover-valve device being switchable to (i) a first valve position to increase air quantity in said at least one air-suspension bellows by placing the compressed-air accumulator in communication with a suction port of said compressed-air delivery device and an outlet port of said compressed-air delivery device in communication with said at least one air-suspension bellows, and (ii) a second valve position to decrease air quantity in said at least one air-suspension bellows by placing said at least one air-suspension bellows in communication with said suction port of said compressed-air delivery device and said outlet port of said compressed-air delivery device in communication with said compressed-air accumulator, said changeover-valve device being piloted with compressed air of said air-suspension system.