BRAKE SERVO HAVING AN ADAPTIVE-FLOW DIRECT AIR INLET

摘要

Pneumatic braking device using two gas sources includes that stiff case (3) divided by dynamic sealing wall (4) is divided at least two rooms (3a, 3b). Partition can be because of caused by pressure difference, the actuating of the valve, air rammer (5) support and control valve (7) is driven supplied to room in pressure, cleaning filter (14) is isolated with the second gas source for the piston of internal (50). The brake booster includes the piston in the second pressure source (one) being arranged between controlled openings sealing device (16,51) and internal (50), for controlling inlet channel (15) connection, second chamber (3b) bypasses the filter (14) and valve (7) to second pressure source (one) simultaneously, pressure difference between the reaction inside of resilient tool (17), piston and second pressure source can selectively seal means when open the pressure difference more than predetermined threshold.