Quote:
Originally Posted by renault_megane_dci
Best header for economy would be one who would make use of that wasted exhaust energy and put it back in the engine ...
Like overcoming the vacuum of the engine ...
That would help torque !
Let's say a kind of turbine thing that would compress air on the other side ...
I should patent that idea ...
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A turbocharger doesn't put energy back into the engine, because the energy returned to the piston on the intake stroke is given back on the compression stroke. They increase peak efficiency a little bit only because the giant increase in torque raises the mechanical efficiency of the engine.
To increase efficiency you have to use less power at the compressor than the turbine generates and send the difference to a battery or the crankshaft.