Cooling your fuel before injection - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 27 (permalink) Old 10-15-2010, 06:38 AM Thread Starter
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Cooling your fuel before injection

Is cooling your fuel a possibility? Like adding a mod before its injected?

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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post #2 of 27 (permalink) Old 10-15-2010, 07:07 AM
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I like my fuel warm in the winter. From what I under stand 203* is the best temp for #2 to be injected, I thing dieselsite.com talks about it whaen you read about the 203* thermostat.

the Duramax's have a fuel cooler on the return line going back to the tank.

I know the guy's runing gassers want cold fuel

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post #3 of 27 (permalink) Old 10-15-2010, 08:23 AM
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warm diesel atomizes better making for more efficient fuel burn which equals better economy. gas has a tendency to ignite (IE: detonate) when warm.

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post #4 of 27 (permalink) Old 10-15-2010, 08:58 AM Thread Starter
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So why would heavy equipment run inline fuel coolers? I was told from a shop it adds a little more horse. And doesnt compression heat up the air in the cylinder more than it already is?

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2002 Dodge 2500 Cummins Automatic Stock.
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post #5 of 27 (permalink) Old 10-16-2010, 08:29 PM
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Putting on a return line fuel cooler, is a good idea. I have a LMM GMC and it has a return line cooler. Fuel above 147 degrees I believe looses power with any amount above that from memory I believe it is 1% for every 4 degrees.
Just a thought!

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post #6 of 27 (permalink) Old 10-16-2010, 09:34 PM
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You do not want to be too hot or cold, you can boil the fuel and not be able to pump it and diesel can jell or become solid when it is too cool.
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post #7 of 27 (permalink) Old 10-17-2010, 03:53 AM
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Quote:
Originally Posted by later View Post
You do not want to be too hot or cold, you can boil the fuel and not be able to pump it and diesel can jell or become solid when it is too cool.
what is the boiling point of ULS diesel at sea level?

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post #8 of 27 (permalink) Old 10-17-2010, 04:29 AM Thread Starter
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Why would a heavy crane tech say that having cooler fuel increases horse power a bit?

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post #9 of 27 (permalink) Old 10-17-2010, 08:17 PM
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Quote:
Originally Posted by BlowinSmoke View Post
Why would a heavy crane tech say that having cooler fuel increases horse power a bit?
The cooler the fuel the more energy there is available in the same volume. Go to a truck stop and feel the tempature of the fuel tanks.
A lot of heavy equipment use a day tank that has a smaller volume than the main tank and a separate pump that on a float fills the day tank when it gets low. Lots of equipment has this set up, and the day tank fuel will get warm enough to vent white smoke. Putting on a fuel cooler will lower the fuel tempature to the ambient tempature.
It is a good way to get extra power on a class eight. or any engine that runs a lot of fuel return.

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post #10 of 27 (permalink) Old 10-18-2010, 05:07 AM Thread Starter
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That makes more sense now that I read that twice. So on our dinky engines compared to them its a nice thought but has no practical application.

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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