EGR valve??
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Originally Posted by krewat
[b]
3) The official intent of the EGR is to "reduce combustion temperatures to limit the formation of NOx (oxides of Nitrogen)".
Disclaimer: Any mistakes are typos and are certainly not because of loss of memory or plain stupidity. Please refer to the section # if (when) picking on me
3) The official intent of the EGR is to "reduce combustion temperatures to limit the formation of NOx (oxides of Nitrogen)".
Disclaimer: Any mistakes are typos and are certainly not because of loss of memory or plain stupidity. Please refer to the section # if (when) picking on me
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Originally Posted by Bear 45/70
Sounds to me like "We are gonna make things better by making your engine less effeicent".
But it's only mid-range loads. Just push the pedal a little further, get more air/fuel charge, get more power.
It's supposed to be off at WOT. Theoretically.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Originally Posted by krewat
Oh, absolutely...
But it's only mid-range loads. Just push the pedal a little further, get more air/fuel charge, get more power.
It's supposed to be off at WOT. Theoretically.
But it's only mid-range loads. Just push the pedal a little further, get more air/fuel charge, get more power.
It's supposed to be off at WOT. Theoretically.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
I figure it's kinda neutral. All it does it drop the intake vacuum slightly, for any given throttle plate position. And only when it's open.
I don't know if it drops the "efficiency". It drops the peak temps, and it mixes the charge with almost neutral space. I'd guess it slows down the burn too... which means you can advance the timing more. Which means it'll ping when the EGR doesn't work.
Oh wait, I already said that...
Think of it as a way to increase the compression ratio slightly. Or not.
I don't know if it drops the "efficiency". It drops the peak temps, and it mixes the charge with almost neutral space. I'd guess it slows down the burn too... which means you can advance the timing more. Which means it'll ping when the EGR doesn't work.
Oh wait, I already said that...
Think of it as a way to increase the compression ratio slightly. Or not.
Senior User
Joined: Mar 2006
Posts: 119
Likes: 0
From: Oklahoma
This is the EPA dude again, My system doesnt have the egr system and any other side systems because somebody cut everything off and when I fill the second tank to anywhere above half full it drains gas onto the grouund out of the tube that is still attached( I was told it use to go to a charcoal filter and perhaps from there to the carberator) I would appreciate the states that presently require emmissions(Green States.) If of course you have that list handy. Thaks to 76Supercab2 for that fine post.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
If Oklahoma requires you to emission test to license your vehicle, then you gotta have the crap at least on the motor. Only your home state matters as the rest can't make you meet their standards.
Thread
Thread Starter
Forum
Replies
Last Post
crazy96863
1973 - 1979 F-100 & Larger F-Series Trucks
9
Jul 24, 2015 10:09 AM
