Fuel cooler?
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Fleet Mechanic
Joined: Nov 2006
Posts: 1,952
Likes: 1
From: Knoxville, TN
Fuel cooler?
Ok, So I was watching Powernation and their 80's chevy truck build with a duramax and saw something interesting.....
The put a tranny cooler on the fuel return line to cool the fuel returning to the tank....
Now I see where this is helpful on a gas vehicle (not that there is a fuel return line in that application) but how does that help a diesel?
I understand if you pressurize fuel it gets hot and then returning to the tank heats up the fuel in the tank....
But with fuel gel issues why would you risk this?
Wouldn't warmer fuel flow better, atomize better, ignite better, and burn better?
I would think cooling it down would potentially cause slower burn thus increasing egts? Maybe I am wrong?
The put a tranny cooler on the fuel return line to cool the fuel returning to the tank....
Now I see where this is helpful on a gas vehicle (not that there is a fuel return line in that application) but how does that help a diesel?
I understand if you pressurize fuel it gets hot and then returning to the tank heats up the fuel in the tank....
But with fuel gel issues why would you risk this?
Wouldn't warmer fuel flow better, atomize better, ignite better, and burn better?
I would think cooling it down would potentially cause slower burn thus increasing egts? Maybe I am wrong?
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Sounds like a gimmick to me. How much does it reduce the temperature? Since it's return fuel, which goes to aprx. the middle of the tank, and the supply fuel comes from the bottom of the tank, how much does it reduce the temperature of the fuel that gets supplied to the engine? And why would you cool the fuel on the return, only to heat it in the filter bowl?
I wonder how hot our fuel gets in the first place.
I wonder how hot our fuel gets in the first place.
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Fleet Mechanic
Joined: Nov 2006
Posts: 1,952
Likes: 1
From: Knoxville, TN
Maybe I will submit it to powernation and ask....
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Fleet Mechanic
Joined: Nov 2006
Posts: 1,952
Likes: 1
From: Knoxville, TN
So do you think it is less of an issue with our trucks as a result of the pressure being built in the injector and then used...where as the Duramaxes and cummins have higher pressure fuel systems?
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