Quote:
Originally Posted by DragBean
If all the fuel got burnt just a hair after tdc youd have the ideal situation.
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Nope, peak combustion pressure should be approximately 10-15 degrees after TDC. If you examine the geometry of the piston, connecting rod and crankshaft, you will,find that there is very little movement of the piston for quite some time (piston dwell at TDC) and having the pressure peaking too early causes detonation, and ultimately loss of efficiency and engine damage.
There is a shed load of research covering this on the Internet.
Simon