METHOD AND DEVICE FOR CONTROLLING AN AIR DRYER UNIT OF AN AIR SUPPLY SYSTEM FOR PRIMARY AND AUXILIARY AIR SUPPLY, IN PARTICULAR FOR A RAIL VEHICLE

摘要

Method and device for controlling at least one air dryer unit (8; 8a - 8c) of an air supply system for the primary and auxiliary air supply of a vehicle, in which at least one compressor (1; 1a - 1c) driven by means of an associated electric motor (4; 4a - 4c) serves both for the primary air supply of a primary air tank (2) and for the auxiliary air supply of an auxiliary air tank (10), wherein the compressed air generated by the compressor (1; 1a - 1c) is channelled over the at least one downstream air dryer unit (8; 8a - 8c), by means of which the compressed air generated by the compressor (1; 1a - 1c) is dried while the drying agent of the air dryer unit (8; 8a - 8c) is regenerated with dried compressed air, wherein, during the auxiliary air supply, the air flow used for regenerating the at least one air dryer unit (8; 8a - 8c) is reduced or suppressed, with the result that, during the auxiliary air supply, there is available, by comparison with the primary air supply, a higher, or the entire, volume flow delivered by the compressor (1; 1a - 1c) in order to fill the auxiliary air tank (10).