DOE is considering a grant request for a gasoline generator
prototype which could operate at about 97% efficiency. Currently the
best they can do is about 65%, the rest is lost as heat.
It's really very simple and low tech. It is basically an airplane
gasoline motor fitted with a sliding-vane turbine on the intake,
which would take advantage of the air flow created by sea level
atmospheric pressure. Since this would be an airplane engine whose
performance is supposed to peak at high altitudes, or at low
atmospheric pressures (airplane engine manufacturers do this by
simply using a specially grinded camshaft), and since my generator
is supposed to work at sea level, at standard atmospheric pressure,
the air flow restriction caused by the intake turbine would work to
its advantage. The extra power would come from a generator attached
to the intake sliding-vane turbine.