|
I think it's worth asking why only low rpm? What's different at high rpm? Is it related to flame speed or maybe heat transfer and evaporation rates?
EtOH will release a little more heat energy over gasoline in a given engine. You can figure out how much based on the stoichiometry and specific heating values for the fuels and some basic math.
Other variables are the quantity and composition (proportions of CO2 and H2O) of the combustion products into which the heat energy is released. The pressure of the gas mixture - from which the useful work is extracted - is affected by those variables.
|