The issue is to maintain pressure
throughout the combustion cycle "at maximum energy release".  It is a trade
off.  Try a simple experiment.  Try to use the same force of energy in doing
two exercises.   Slap your left hand with your right(reverse for lefties).
First do it with a short/sharpe slap and then with a slower more defined
slap, "USING the same energy".  The short slap will hurt like hell but your
hand won't move very much, on the second slap, the hand moves significantly
more.   In the first example, there is no momentum to keep the
rotation(up&down motion) in the second, the energy is distributed through out
the stroke(rotation).  YES!  this is simplistic and a tradeoff situation.   I
would defer to someone who has run an engine with both examples.

Jim
RV8

 
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