"Sweet Spot"

[Dave Williams]

-> Right though, inaccurate thermodynamics. The gas loses temperature as
-> it expands, as well as losing pressure, so the drop in pressure is
-> considerably more precipitous than what you describe, Bob!

 The lower combustion limit of several of the end-gas reactions is
around 700F.  Also consider the combustion products contain liberal
amounts of water as steam, which is a radically non-ideal gas.

 The temperature/pressure drop may not be as severe as you indicate.
And, of course, various fangles could be conceived to keep the
temperature at any desired level.  With direct injection it would be
easy.

==dave.williams at chaos.lrk.ar.us======================================
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