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Joined: May 2000
Posts: 1,336
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: May 2000
Posts: 1,336 |
Originally posted by todras:
EGR = added octane= slower burn of fuel and resistance to detonation. Slower burn (slower/lower rise in cyl gas temps/pressures) reduces NoX(very high compression ratios give high NoX)...Egr does NOT operate below optimum engine operating temps and not all the time. In most calibrations it operates on steady cruise driving and on overrun conditions. Down side of EGR delete 'can' be pinging so an ignition retard (loss of power) may be required with no EGR.
If the EGR does NOT operate below optimum engine operting temps, then wouldn't that mean that "it helps the car warm quicker" is a false assumption? This is what I'm talking about ... seriously conflicting information out there on the subject. Prior to the clean air act of 1970, nobody knew what and EGR was ... it didn't exist ... it's the brainchild of someone looking to pass an emissions test. Don't get me wrong, I'm all for keeping it on the car and all other emissions control devices, but let's not jump on the bandwagon with false information here. I say this even though I too live in an area that doesn't require emissions testing. I'm not playing devil's advocate on this subject, I just want to know the REAL benefits of having/not having an EGR system on the car, and not some automotive myths/assumptions.
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