SYSTEM TO CONTROL PRESSURE IN PNEUMATIC SYSTEM OF TRACTION VEHICLE Russian patent published in 2006 - IPC B61C3/00 

FIELD: transport engineering.

SUBSTANCE: invention relates to improved of piston compressor plants of traction rolling stock. Shaft of compressor is connected with shaft of induction motor whose stator winding is connected to ac supply source, and rotor winding is connected through rectifier to armature winding of dc control machine whose field winding is connected with first control unit connected with first digital-to-analog converter connected to first output of microprocessor controller to first input of which pneumatic system pressure pickup is connected through first analog-to-digital converter. Compressor shaft speed pickup is connected to second input of microprocessor controller is connected by means of second digital-to-analog converter with control unit of contactor connecting induction motor to ac supply source. Third output of microprocessor controller is connected with control unit of traction vehicle by means of third digital-to-analog converter.

EFFECT: provision of automatic maintenance of pressure in pneumatic system of traction vehicle irrespective of consumption of air from pneumatic system, temperature and pressure of atmospheric air.

3 cl, 4 dwg