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Old 10-05-2014, 07:48 AM   #105 (permalink)
renault_megane_dci
Master EcoModder
 
Join Date: Feb 2009
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la_voiture_de_courses - '03 Renault Megane Estate
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Quote:
Originally Posted by blownoiler View Post
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.
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.
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