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Will the Groove help a Propane Engine? |
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Theoretically Yes.
Propane is a very slow burning fuel. Converted engines benefit from
advancing the timing over gasoline settings because it takes so long
for the chemical energy in the propane to convert into thermal energy
durring combustion. The grooves promote a "gust of wind" on the
compression stroke that would help to better homogenize the propane
with the air, then the warm jet stream on the power stroke would carry
the flame front around the cylinder to "take the fire to the fuel"
quicker. By helping the propane to combust quicker, more energy would
be released earlier in the power stroke. This would convert more of the
heat energy in the fuel into crankshaft power (Brake Specific Fuel
Consumption, or BSFC for short).
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