Greg Fiorentino wrote:
Actually a properly set up intercooler on any turbodiesel greatly increases
the efficiency of the engine.  The laws of thermodynamics are such that the
efficiency of an engine is proportional to the difference in temperature of
the intake and exhaust gases.

You've said this before, and I never knew where you were coming from.



http://en.wikipedia.org/wiki/Thermal_efficiency#Engine_cycle_efficiency

Thanks for the link. It appears that you are confusing combustion temperature, Th, with intake manifold temperature. At any rate, the efficiency, 1 - (Th/Tc), gets larger as Th gets larger. What you want is high combustion temp and low exhaust temp. Exhaust heat is waste energy out the tailpipe. Intake temp is not a factor in this calculation.

IMO, heat entering the engine can only help to increase Th, and hence the efficiency of the engine, except that a denser intake charge might increase the effective compression ratio.

Mitch.

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