109 e3b against spitfire II

[Kurfürst]

Originally Posted by Viper2000

Because the supercharger work is W*Cp*deltaT, you will find that injecting fuel into the eye of the supercharger results in a considerable reduction in the supercharger power required for any given boost pressure, which naturally improves brake power and brake SFC.

Pretty redundant if you ask me, if you are already using a variable speed supercharger adjusted already for supercharging needs, as DB did with its barometrically controlled hydraulic clutch.. the supercharger wasn't making less waste, it made almost no waste at all.

Correct me if I am wrong, but injecting fuel into the supercharger eye reduces charge temperature, delaying detonation point. Direct fuel injection does the same (in the combustion chamber), but later, and with better fuel effiency, no risk of backfires, and no negative G problems. High octane fuel is a pretty expensive agent for charge cooling..