swirl flap

noun

A small butterfly valve fitted to the intake manifold just before the cylinder head intake ports of many modern automotive diesel engines, and around which air can pass even when it is closed.

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Meanings

nounswirl flap (plural swirl flaps)

plural swirl flaps

  1. automotiveA small butterfly valve fitted to the intake manifold just before the cylinder head intake ports of many modern automotive diesel engines, and around which air can pass even when it is closed.
Cite this entry
APA

swirl flap. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/swirl%20flap

MLA

“swirl flap.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/swirl%20flap. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “swirl flap,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/swirl%20flap.

Source: swirl flap on Wiktionary, CC BY-SA 4.0.