Quote:
Originally Posted by blownoiler
Exhaust temps would most likely climb too high for this type of system, boiling the water to steam, I foresee extremely high pressure in the coolant side of the exchanger. You would need a way to stop the exhaust adding heat once the engine was warmed up, otherwise a cooked engine is on the cards. Something similar to an egr valve is what I was thinking, which would enable you to switch the exhaust heat off when not needed.
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IIRC BWM added some kind of steam engine on their transmission shaft not so long ago to use that exhaust heat.
Will try and gather info on this.