Quote:
Originally Posted by MadBill
On the detonation point, the missing factor is TIME. Once all the conditions
mixing, pressure and temperature have been met for detonation to occur, it
DOESN'T! At least not for a short but critical delay period. If during this interval
(which of course encompasses more crank degrees as the RPM increases) the
normal flame front arrives in the subject region, no detonation occurs. or this
reason, detonation is much more prevalent at low RPM.
|
I confirm this to be true at the drag strip with testing. Auto-ignition first
shows up at launch when RPM (and flame speed) are at there lowest. Next
comes the bottom of high gear.
This adds another important factor to the equation, LOAD. At the initial
acceleration of launch, engine load is very high, again later at the high
gear shift.