Originally posted by techinspector1
I don't know if I'm correct or not, but I use the words squish and quench interchangably.
Quench and squish are different. Squish is the area that isn't quenching, if that makes any sense to you. A tight fitting dome filling a combustion chamber with the same clearance everywhere would be a total quench chamber. Any thing else would have a squish area. I guess another way to look at it would be to consider squish the lowest pressure area in the chamber as the piston is moving towards TDC.

Aside from affording a more homogeneous mixture to the plug the quench area in the cylinder also cools the mixture a little bit as it gets close to some water.

Another example of "Quench" would be EGR.

Hope this helps.


j*b