The coming thing is hybrid cars.

One of the tricks that could be used by Mazda or Wankel GmbH is build
a high speed alternator that is designed to be driven by an exhaust turbine.
One could easily recover a  lot of the 50% waste energy in the exhaust
by this method.

No high speed variable ratio gears to worry about. The battery would act 
a storage device to smooth the flow of power from the exhaust turbine.

No attempt need be made to recover power from the exhaust at high rotary engine
power levels when the EGT's are the highest. A computer controlled waste 
gate could then be opened to prevent excessively turbine inlet temps or 
over speeds thereby keeping the cost of the turbine wheel down.

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

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