Warming the coolant with exhaust?
I am thinking about building a "coolant warmer" to warm up the engine more quickly. My idea is to transfer heat from the exhaust header to the coolant until the engine warms up. One way I thought of to do this is to wrap copper pipe around the tubes on the exhaust header and run coolant through it. I would install a valve so I could allow or block coolant flow for winter or summer. Warming the engine up quicker could only help its efficiency and longevity. What do you think about this idea?
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You should probably have a bypass for the exhaust after warm up instead of blocking off coolant I could see the left over coolant cooking in the pipes and sludging up the tube
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Not only cooking, but it would turn into a bomb as it passes the boiling point of the coolant and pressure builds. There are a few threads on this though. If you do some searching there are several ideas on how to do it.
In fact, I just added this mod to the 65+ mods list: http://ecomodder.com/forum/fuel-econ...cations.php#69 There are a couple links there, but there are more threads on this topic too. |
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Haha, I just did it this afternoon. I'm going to be adding a bunch of the warm up mods from my the fast warm up compilation thread. I've just been trying to gather some links to threads.
http://ecomodder.com/forum/showthrea...ead-35830.html |
http://ecomodder.com/forum/showthrea...ger-29085.html
All you need to do is control exhaust flow. You can't just shut off coolant flow when you don't want any more hot coolant. |
I thought i had posted the video link here before.
https://m.youtube.com/watch?v=nNendiDFzSM Vw are already doing this, they have a water cooled exhaust manifold. You could maybe repurpose an egr valve to blow on the radiator or oil pan? |
The first-gen Insight has a water-cooled exhaust manifold too. It's cooled full-time, and the car just runs the same radiator as 4-cylinder cars do (it's a 3) to make up for the added heat.
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If the thermostat shuts coolant flow thru the engine off until it's hot, how do you gain efficiency? Asking for a friend...
I do like the EGR valve idea, maybe you could copy DOAX idea and heat the oil pan and trans ? |
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