金融界2025年8月20日消息，国家知识产权局信息显示，安徽省锦瑞汽车部件有限公司申请一项名为“一种PCV阀盖用焊接固定装置”的专利，公开号CN120502932A，申请日期为2025年07月。

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The PCV (positive crankcase ventilation) valve is a one-way valve that recycles crankcase gases back into the engine to burn. A plugged PCV valve can result in a rough idle and poor mileage.

The COVID-19 pandemic had a further delaying effect, diverting health resources and political attention away from introducing ...

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 ...

The bottom line is this: Your service sales staff should understand that a neglected PCV system may cause oil leaks. It also can adversely affect engine performance and gas mileage, but that's another ...