Just as it says boys, can someone please explain exactly what "Defueling" is, and how it helps if your EGT's get too high?
Fantom3993
You forgot to tell them that when you take away the fuel...you take the power away too. :smoke:Fast-6.0 said:
:umno:
Yes, but diesels don't get hotter when they get lean....they get colder. In fact diesels almost never run at 14.7 even at WOT. They would smoke too much. They run at 60-100:1 at idle. They move toward 14.7 as more fuel is added and get to WOT. Gassers on the other hand must always run at 14.7 or they won't run.PSDPlayer said:
Diesels have 100% air all the time hence the no throttle body. NOTE: the throttle body on the 6.0 was there for EGR strategy. The truck also has very little air when not boosting so it gets very little fuel try and drive the truck without boost. It just smokes and smokes. Its gettin a crap load of fuel but it ain't moving. Same idea when you just smoke just to smoke. Soot out the pipe on extreme is just dumb. If you want wasted fuel and lots of smoke just disconnect the CAC tubes.
Hmmm, I know I am new here and I mean no offense to anyone...but, I have just learned that posts can get popped here quickly as well. Must be a contagion about the diesel sites.ISurvivedNMU said:
He did apologize.
Just my thoughts on the matter.
And to keep it on topic I guess you could say he was...defueled.
Looks like things got a little heated.
For everybodywho wants to know. As you add fuel you richen and increase heat (EGT's). Adding boost (air) decreases EGT's (to a point). If you are superheating the air so much with high boost, egt drop wont be as great. To drop EGT's with timing you advance it. The reason the 6.0 runs such high EGT's stock is because the timing in so retarded. Advancing the timing gives more time to extract the heat and results in lower EGT's.
Stoich is just a term based on emissions. When a gasser is at stoich its at a balance of emissions versus power. Likewise for diesels. Greatest power is never achieved at stoichiometric.
Just some thoughts for those who want to know.
For everybodywho wants to know. As you add fuel you richen and increase heat (EGT's). Adding boost (air) decreases EGT's (to a point). If you are superheating the air so much with high boost, egt drop wont be as great. To drop EGT's with timing you advance it. The reason the 6.0 runs such high EGT's stock is because the timing in so retarded. Advancing the timing gives more time to extract the heat and results in lower EGT's.
Stoich is just a term based on emissions. When a gasser is at stoich its at a balance of emissions versus power. Likewise for diesels. Greatest power is never achieved at stoichiometric.
Just some thoughts for those who want to know.
But getting back to the original question, defueling, like with the Attitude, means you just cut back the fuel. If all you do is cut fuel, at the conditions that this normally occurs (full WOT under load), I think from my experience (I've watched the gauge), EGT's go down. They would have to. The extreme is cut the fuel flow completly. Now is anyone going to say the EGT's go up???? I hope not.
RL
RL
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