PCV是英文Positive Crankcase Ventilation（曲轴箱强制通风）三个字的简写，中文的意思是曲轴箱（或油底壳）主动通风控制系统。 PCV阀由阀体、阀门、阀盖、弹簧组成，不可分解。

The PCV (positive crankcase ventilation) valve is a crucial component of an internal combustion engine. It regulates the amount of air that flows into the engine's crankcase, which balances out the pressure …

Mar 16, 2023 · PCV阀全开过程仅需零点几秒，动作快速，可保证锅炉安全门不动作，特别是为同时进行的 快开汽机旁路 、降低燃烧强度、维持汽包水位等一系列复杂控制赢得了宝贵的缓冲时间。

In polycythemia vera (PCV), the body makes too many red blood cells, leading to a thickening of the blood. It can be associated with an elevated platelet count and an enlarged spleen.

Although very few drivers know about this piece, a PCV valve or positive crankcase ventilation is a very important part of the car engine. In this article we will talk about the PCV valve, what it is and how …

PCV阀可以根据发动机的工况需要，自动调节曲轴箱废气进入进气歧管的流量。 它如果坏了，还会让发动机机油消耗量增加。

Sep 27, 2024 · PCV阀（Positive Crankcase Ventilation），即曲轴箱强制通风，曲轴箱（或油底壳）主动通风控制系统，是一个安装在发动机曲轴箱通风系统与进气系统之间的计量控制阀，是汽车发动机 …

Jun 13, 2025 · Learn what a PCV valve is, how it works, where it's located, and the symptoms of a bad or clogged PCV valve. Find out when to replace it and how much it costs.

May 29, 2025 · Your health care provider can help you determine which type of PCV, and how many doses, should be received. Infants and young children usually need 4 doses of PCV.

Separating the crankcase from the intake manifold, which is a source of varying air pressure, the PCV valve maintains the optimal level of vacuum in the crankcase to extract the products of blow...