Originally posted by warmonger: Perhaps a magnetic field coupling since the turbine is so light? That way it wouldn't actually be in contact with the turbine.
war...
So in layman's terms, use a magnet to spin the turbine at low engine rpms? I am assuming an electro-magnet, or could it work only using the polar characteristics of the magnets?
You would have to have some permanent magnetic areas on your compressor wheel, then use electromagnetic field coils surrounding the compressor housing. These would be swithed on to spool the compressor/tubine up to speed rapidly but would have to be shut off to prevent them from actually slowing the compressor wheel down at very high turbo speeds. You could just use a conventional electric motor armature located centrally...between the turbine and compressor, sort of where the bearings are now and then shut off the motor as the exahust volume goes up. However, the turbo has enough mass already and would be VERY massive with that kind of armature in the middle. That is why I was thinking permanetly magnetic blades on the compressor with the actual compressor housing having field coils all through it. Exhaust side is too hot.
Still, it would probably be smarter to continue working on Lighter Mass components for the turbine/compressor wheels so that less exhaust would be required to spool the compressor RATHER than adding more energy to turn an already massive turbine.
war...
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