Quote:
Originally Posted by toc
Probably should start it's own thread, but since it's under discussion here..
... A turbo charger improves fuel economy? (By recovering energy from heat and feeding it back into the engine)..
Sounds wrong, so where's it wrong?
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all else being similar, smaller engines are more efficient then big ones.
for a given vehicle, there is a design spec where the end user expects a certain amount of power. If you turbocharge a small engine, you can get the desired peak horsepower, yet still retain the small engine for economy.
all by itself, a turbocharger slighly reduces economy at lower power outputs, but the difference is pretty small.