Quote:
Originally Posted by Occasionally6
At very light loads maybe. Current turbochargers use a waste gate to dump excess exhaust gas around the turbocharger once the desired boost (compressor work) is achieved. There's still plenty of energy available in the exhaust that is being routed around the turbine.
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I don't have any actual stats, but, I believe that statement is backwards. I believe that a properly sized turbo uses its waste gate only at high loads.
There is one other problem here. How do you harness power from a device that is spinning at crazy rpms and is very hot? You do it with a rather complicated transmission that will cause turbo lag like you've never seen.
The bottom line is that yes, there is some wasted energy here, but harnessing it is gonna be awfully tricky if possible at all.