Quote:
Originally Posted by UFO
How does a faster combustion event lead to an efficiency improvement? How have you measured improved BSFC? This sounds like an opportunity for detonation, which will not improve fuel economy.
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As P-hack posted
"any pressure build up (aside from normal compression) that occurs prior to tdc is counteractive"
My own BSFC figures came from my data-logs while on a chassis dyno. Fuel usage verse power ABA testing.
I also have the ability to read knock with my engine management system in which there were no counts of knock while running the nitrous.
Today's engines are all running fast burn combustion type heads. This actually helps with preventing detonation, due to the less time during the combustion event the less likely the engine will detonate. Plus as P-hack said there will be less pressure as the piston cycles to TDC running less initial ignition advance.