Squish (piston engine)
Squish is an effect in internal combustion engines which creates sudden turbulence of the fuel/air mixture as the piston approaches top dead centre (TDC).[1][2]
In an engine designed to use the squish effect, at top dead centre (TDC) the piston crown comes very close, (typically less than 1mm[2]), to the cylinder head. The gases are suddenly "squished" out within the combustion chamber, creating turbulence which promotes thorough fuel/air mixing, a factor beneficial to efficient combustion. Squish effect may be found in ohv and ohc engines, including engines with a Heron cylinder head.
References
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- Progress Report for Combustion and Emission Control for Advanced CIDI Engines. United States Office of Transportation Technologies, United States Department of Energy
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- ↑ "How to Measure Your Cylinder Head Squish Clearance..." Retrieved 16 June 2013.
- ↑ 2.0 2.1 "The Combustion Chamber" Retrieved 16 June 2013.
