| 摘要 |
The present invention relates to an improved air-brake system which comprises a multi-function control valve, a number of subvalves inside the multi-function control valve, including a pressure-protection valve, a pressure- reduction valve, an emergency control valve and a synchrovalve. In one embodiment, all the four types of subvalves are inside a unitary compartment in the multi- function valve. <IMAGE>
|
