曲拐箱 meaning in English

crank box

Could you tell the main reason for crankcase explosion
请您说出柴油机曲拐箱爆炸的原因？
A very severe explosion can damage the crankcase door and cause fire in the engine room
非常剧烈的爆炸会损坏曲拐箱道门并引起机仓着火。
The ignition will cause a tremendous rise of pressure in the crankcase , which will open the crankcase relief v / v momentarily
燃烧会引起曲拐箱内压力急剧升高并即可爆开曲拐箱安全阀。