| 摘要 |
A braking system comprises one or more brake cylinders ( 100, 200, 300, 400 ) each associated with one or more wheels, a fluid supply ( 10 ), and a brake control ( 14 ) for commanding the feeding of fluid to the cylinder or cylinders via one or more brake valves and one or more brake pipes ( 44, 46 ). The system also comprises a function selector ( 50 ) adapted to adopt an antislip mode position ( 50 A) or antilock mode positions in which it connects a branch pipe ( 52 ) to a fluid feed pipe ( 54 ) or to a return line ( 56 ) and a control valve ( 110, 210, 310, 410 ) for the or each brake cylinder adapted to adopt a normal braking position ( 100 A, 210 A, 310 A, 410 A) to connect the cylinder to the brake pipe ( 44, 46 ) and one or more special mode positions ( 110 B, 210 B, 310 B, 410 B) to connect the cylinder to the branch pipe ( 52 ) that the function selector connects to the return line or to the feed. The system further comprises means ( 120, 220, 320, 420 , UC) for detecting wheelspin or a wheel tending to lock and for commanding the function selector ( 50 ) and the control valve associated with the brake cylinder associated with that wheel accordingly.
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