Blowoff valve

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Notion

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Science and technology

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What Wikipedia says

A blowoff valve (BOV) (also called dump valve or compressor bypass valve) is a pressure release system present in most petrol turbocharged engines. Blowoff valves are used to reduce pressure in the intake system as the throttle is closed, thus preventing compressor surge.

Excerpt from the Wikipedia article “Blowoff valve”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Akyeren~commonswiki, Public domain, via Wikimedia Commons.