"Dave Plowman (News)" wrote in message
...
In article ,
Doctor Drivel wrote:
There is no such thing as 'spare power' under these circumstances. The
only truly free energy in this context is that recovered instead of
using brakes.

Nope. The ecu senses when the engine has surplus power and uses this to
charge battery. That is why the Mk 3 Prius gets 72.4 mpg.

And when the battery is fully charged, what happens to this 'surplus
power'? Because either it is 'surplus' or it is needed.

Senile one, the engine revs down and the electric motor cuts in. Duh!