egr question?
Senior Member
Joined: May 2000
Posts: 789
Likes: 0
From: Bay Area, CA
Some EGR info:
So, you may lower intake temp, but you'll raise combustion temp. Also, I dont know about the L, but most perf. cars close EGR at WOT anyway.
How the EGR Valve Works (Exhaust Gas Recirculation)
A few years ago scientists discovered they could reduce the formation of nitrogen oxides (NOx) during combustion by keeping combustion temperatures below about 2500 degrees F. They did this by injecting an inert (non burning) gas into the air/fuel mixture of the engine. The inert gas helps cool the combustion event to below the threshold where NOx are formed. It turned out that exhaust gas works well as an inert gas.
A few years ago scientists discovered they could reduce the formation of nitrogen oxides (NOx) during combustion by keeping combustion temperatures below about 2500 degrees F. They did this by injecting an inert (non burning) gas into the air/fuel mixture of the engine. The inert gas helps cool the combustion event to below the threshold where NOx are formed. It turned out that exhaust gas works well as an inert gas.
Senior Member
Joined: Aug 2000
Posts: 298
Likes: 0
From: Camano Island, WA
The problem we have is that the exhaust gas is introduced ahead of the fuel supply. On carbs and TBI/CFI, the gas does a really nice job of keeping the intake clean and smooth. But with our port injection, that exhaust goes into the intake and sticks to the walls. Under the right circumstances, it might even back up into the supercharger and/or heat up the intercooler.
Not that I'm advocating any tampering or anything, but I sure hope that when I put my headers on nothing gets stuck in that recirculation tube...
Mark
'00 Lightning
'79+ Corvette
Not that I'm advocating any tampering or anything, but I sure hope that when I put my headers on nothing gets stuck in that recirculation tube...
Mark
'00 Lightning
'79+ Corvette