how i did it (Fuel heater) - Page 11 - Fuelly Forums

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Old 06-26-2008, 05:45 PM   #101
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lol, sorry, but you were REALLY gullible to believe this guy, especially when he doesn't carry a gas log, has shown no pics of his infamous setup, and basically his only posts have been in this thread.

Claims he wrecked his car at 120... who do you know who is trying to hypermile, drives 120mph? No one I know.... also, if you're doing 120 mph on the open road, you're just plain ol' STUPID, and his car was an N/A model to boot!
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Old 06-26-2008, 06:39 PM   #102
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Fuel heaters have been known for modest gains in the 15% area for years... not saying I believe 62mpg in the stealth though.

Now then, let's look at what debunkers say about things...
http://en.wikipedia.org/wiki/Afterma...mic_Efficiency

Oh snip, that value g appears to be for air at 20C and gasoline as a liquid at 20C... Guess what, if gasoline is fully vaporised as it comes out of the injector at a temperature of near what the coolant is, that value of g changes. (For H2 it's about 5 or 6 BTW) since gasoline is diluted by the air 14.7:1 it changes only a little bit in this case to about 1.35ish, doesn't sound like a lot, but it changes the theoretical obtainable efficiency to around 56%... now remembering we see MPG after all losses, that's a theoretical 20% boost in MPG if we perfectly vaporise the gas, instead of inducting it as liquid droplets, this is due to the SHC of gas going to around 4ish from 2.2ish when heated and vaporised into a gaseous phase.

However, since under low load, typical MPFI and SEFI motors can achieve fairly good vaporisation of the gas anyway in the intake port before valve opening, most motors won't see gains quite this large. Remember though the maximum efficiency numbers would be under high load, with the injector spraying with the valve open, so that's why that calculation appears to be based on liquid fuel at 20C. So if you drive like a maniac you might get the full 20%. Actually, P+G proponents using brisk pulsing might see a decent gain.

Anyone who is awake might notice that a large change in intake air temperature would also affect g quite nicely.
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Old 06-26-2008, 08:28 PM   #103
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what about this?!

http://www.freepatentsonline.com/4476839.html
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Old 06-26-2008, 08:32 PM   #104
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Fuel heaters have been known for modest gains in the 15% area for years... not saying I believe 62mpg in the stealth though.

Modest? 15% of our oil consumption would save 300,000 barrels per day. Maybe in reality it does 1.5%? I don't have a clue...
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Old 06-26-2008, 09:20 PM   #105
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Thumbs up

I think we should all take a moment to appreciate how AWESOME this thread is! Who cares about writers strike in Hollywood when we've got this thread!? I'm just pissed I read it all and it's over!
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Old 06-27-2008, 07:33 AM   #106
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I agree.

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Old 06-27-2008, 11:15 AM   #107
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lol

yeah I agree! but by the way I did do a lot of other research on these I didn't just read this thread... lol I would be a complete idiot if I just trusted chope. I was really just joking about that part
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Old 06-27-2008, 01:13 PM   #108
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As far as I can tell there is some benefit to this fuel heater device, never throw the baby out with the bath water, have a look at the patent linked by Slurp





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Old 06-27-2008, 07:23 PM   #109
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As far as I can tell there is some benefit to this fuel heater device, never throw the baby out with the bath water, have a look at the patent linked by Slurp

Except the price of copper, it is something that can be done easily, and fairly cheap.
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Old 06-27-2008, 08:31 PM   #110
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Except the price of copper, it is something that can be done easily, and fairly cheap.
Does copper have to be used? How about steel fuel line?
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