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Old 08-20-2011, 06:31 PM   #25
HipToBeSquare
Scooby Specialist
 
Member#: 119958
Join Date: Jul 2006
Location: (IA) flyover cornfield country
Vehicle:
1992 SVX LS-L

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I commented before, but if you are going to block off the turbo-compressors with a butterfly valve, and the turbos also have waste gates to prevent over-boost, why bother with the complexity of the intake tract, for a narrow usage profile?

Why not use ALL of a turbine's potential, by gear-reducing it's high RPMS down to crank-shaft RPMs, and compound the turbine output directly with the crankshaft, and into the drivetrain.

Then use an electric (if it is at all viable to have a big enough electric motor to push the volume of air an engine needs), or a CVT-driven centrifugal supercharger.

The turbine can do what the turbine does best, without the low-RPM blockage of the butterfly valve in that system, nor needing a waste gate to bleed off energy, because it doesn't have to conform to the compressor/intake's limitations.

Tune the separate supercharger to be efficient for the intake parameters of the engine, instead of trying to make the intake and exhaust parameters match, when they don't.

I was much more impressed and enthused about BMW's steam thermal reclamation system, to pull wasted thermal energy out of the engine, and the exhaust, and compound a steam-turbine's output with the crankshaft output to the drivetrain.
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