Quote:
Originally Posted by RedDevil
And would it be cheap enough?
They may be on to something, but I doubt it would ever be practical for a car. 20% total FC reduction from just exhaust gas heat seems very unlikely to me.
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Half of every gallon of gas you burn goes directly out the tailpipe without doing usable work and up to 75% of the gallon that does work may also be wasted in other ways.
I have no doubt that energy recover from exhaust is usefull, but like you wonder will it ever be cheap enough?