, flame propagation and after burning periods are very narrow, due to higher laminar flame speed of ethanol, this leads to higher PFP and higher exhaust temperature.
the ignition lag
, which is dependent on the parameters due to following formula :
This may be due to the fact that with the addition of EGR the quantity of oxygen available for combustion reduces which makes incomplete combustion and also due to hot EGR the ignition lag
reduces and the amount of fuel burned in the premixed combustion zone also reduces and hence the heat release decreases.
After a couple of sighting shots wide in the ditch, I became accustomed to the very long ignition lag
and put five rounds into a 5" cluster freestanding at 30 yards.