Quote:
Originally Posted by Diesel_Dave
So lately I’ve been thinking about ways to improve cold start warm up times. Here’s my latest brainchild. Why not put in a coolant-to-exhaust heat exchanger? In a cold startup (before the thermostat opens), you circulate coolant from the engine block through an exhaust heat exchanger (after the turbo) and then back to the suction side of the coolant pump. You then put in a control valve so that after the thermostat opens, no more coolant flows through the heat exchanger.
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Toyota did this with their 3rd gen Prius in favor of the 2nd generation's coolant thermos. We talked about how to make our own version here:
http://ecomodder.com/forum/showthrea...very-7107.html