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Old 03-13-2018, 02:16 PM   #19 (permalink)
jamesqf
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Quote:
Originally Posted by Ecky View Post
I'm not certain I follow the logic with reduced pumping losses - you're pumping more air through the engine, not less, right? That energy is still coming from somewhere.
Exactly! With a turbocharger, the energy comes from exhaust heat. It's energy that would otherwise be lost out the tailpipe. With a supercharger, the energy comes from the engine, robbing power that would otherwise propel the car, and ultimately reducing fuel efficiency.

Quote:
Originally Posted by California98Civic
The boost from a turbo or supercharger reduces that loss. Yes, it uses other energy to do that, but that energy comes from capturing waste energy in heat and braking...
NO! That's the fundamental difference between a turbocharger and a supercharger. The turbo uses energy from waste heat, the supercharger takes energy from the engine.
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