Method for the automatic operation of a tire inflation device for motor vehicles

The system to give an automatic inflation of vehicle pneumatic tires has an electronic control (1) which registers the pressures in all the tires (13) through sensors (12), to control pneumatic valves and a compressor (8) to set the tire pressures according to driving conditions, driving speed, loading, the road or cross country conditions, and the like. Under normal conditions, the compressor is in a system closed against the atmosphere between the tires and a pressure reservoir (9) to prevent critical operating conditions. The compressor has a direct connection to the pressure reservoir, without any switch units.