Patent ID: 6874772

Claim:
A method for controlling the storage pressure of a pressurized air store of a closed level control system for a motor vehicle, the closed level control system holding an air quantity and including a compressor, said pressurized air store which can be filled with air from the atmosphere and which can be discharged to the atmosphere, at least one air spring communicating via said compressor with said pressurized air store so as to permit a transfer of pressurized air from said air spring into said pressurized air store and from said pressurized air store into said air spring, the method comprising the steps of: determining said air quantity in said closed level control system; filling said pressurized air store with air from the atmosphere when said air quantity lies below a lower limit; discharging said pressurized air store into the atmosphere when said air quantity lies above an upper limit; and, controlling the storage pressure of said pressurized air store so as to cause said quantity to lie in an operating range between said upper and lower limits after said filling of said pressurized air store or after said discharging of said pressurized air store.