四冲程摩托车用曲轴箱通风系统应当改进。
The crankcase ventilation system for 4-stroke motorcycle should be improved.
曲轴箱通风系统要携带新鲜的空气通过曲轴箱。
The crankcase ventilation system carries fresh air through the crankcase.
曲轴箱通风系统要携带新鲜的空气通过曲轴箱。
The crankcase ventilation system carries fresh air through the crankcase .
因此，没有证据显示这些液体机油来自曲轴箱通风和停留的各种装配管道…
So there is no evidence to show the liquid oil come from crank case ventilation and remain in the manifold assembly .
通过分析4105柴油机一度存在的曲轴箱通风不畅和机油消耗高的情况，提出了新的改进方案，经过试验验证，效果良好，并已在生产上应用。
A plan is proposed for improving crankcase ventilation and oil consumption of 4105 diesel engine. Verification test proved that the plan is effective and has been applied in mass production.
所有现代制造的汽车发动机，都需要装备控制曲轴箱有害污染的曲轴箱强制通风系统。
All automobile engines now built are equipped with the positive-crankcase ventilation system of crankcase emission control.
所有现代制造的汽车发动机，都需要装备控制曲轴箱有害污染的曲轴箱强制通风系统。
All automobile engines now built are equipped with the positive-crankcase ventilation system of crankcase emission control.
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