| 摘要 |
<p>In a multi-circuit fluid pressure braking system two reservoirs (4, 5) are chargeable via protection valves (9, 10) to provide fluid pressure supplies independently to two separate braking circuits and a third circuit is supplied from the same two reservoirs via respective one-way flow paths (14, 15) and a further protection valve (16) the opening pressure of which approximates to that of the first two protection valves but the reclosure setting of which is appreciably lower to permit operability of the third circuit down to a depleted valve of either of the reservoir pressures and the third protection valve having a way out which is sufficiently less than the way in to prevent spurious reclosure by transient pressure demands of the third circuit.</p> |
