TRACTION RAIL VEHICLE AUXILIARY BRAKE CONTROL VALVE Russian patent published in 2003 - IPC

FIELD: railway transport. SUBSTANCE: invention relates to rail vehicle brake control means. Proposed driver's brake valve of auxiliary brake of rail vehicle contains pressure relay with control and controllable pressure spaces and braking and release electromagnetic valves placing control pressure space of pressure relay, respectively, with compressed air source and with atmosphere. Driver's brake valve is furnished additionally with automatic overlapping pneumatic members consisting of spring-loaded movable partition coupled with valve and separating spaces formed in automatic overlapping pneumatic member and communicating with control pressure space of pressure relay. One of spaces formed in automatic overlapping pneumatic member communicates with control pressure space of pressure relay by means of non-restricted channel, and second space is constantly communicated with atmosphere and is in communication with space of control pressure of pressure relay through restricted channel overlapped by valve of movable partition of automatic overlapping pneumatic member. EFFECT: prevention of accumulation of compressed air in vehicle brake system in train position. 1 dwg _