English Dictionary

retaining valve

名詞

(rail transport, mechanical engineering) A device that retains some air pressure in a train's air brake cylinders even when the automatic brake valve is set to the fully-released position, used on steep downgrades to allow a degree of continuous braking effort to be maintained without depleting the pressure in the train's brakepipe (which would result in the loss of nearly all braking ability, causing a runaway).

日本語の意味

鉄道や機械工学の分野で用いられる装置で、列車の空気ブレーキシリンダ内の空気圧を、自動ブレーキ弁が完全に解放位置になった場合でも一定量保持し、特に急勾配走行時において、ブレーキ管の圧力を極端に低下させず、連続的なブレーキ操作を可能にする役割を果たす装置

The engineer checked the retaining valve before the train began its descent to ensure continuous braking on the steep downgrade.

運転士は急勾配の下りで連続的な制動力を維持するため、列車の空気ブレーキシリンダー内の空気圧を一部保持する保持弁を点検した。

意味（1）

(rail transport, mechanical engineering) A device that retains some air pressure in a train's air brake cylinders even when the automatic brake valve is set to the fully-released position, used on steep downgrades to allow a degree of continuous braking effort to be maintained without depleting the pressure in the train's brakepipe (which would result in the loss of nearly all braking ability, causing a runaway).

retaining valves （ plural ）