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New Edge Cobras
Whats the EGR valve For???
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<blockquote data-quote="Jimmysidecarr" data-source="post: 9691222" data-attributes="member: 11681"><p>The EGR recirculates a small amount of exhaust gas.</p><p>The gas functions as a combustion damper and keeps the combustion temps below the point where Nitrogen from the air fuel mixture combines with Oxygen.</p><p>This keeps NOX levels down in the exhaust.</p><p></p><p>It also helps keep detonation suppressed and allows for more aggressive timing advance. Not exactly sure how this last function exactly works but I suspect it is from the lower combustion temps.</p><p></p><p>On many new engines the EGR has been eliminated by variable independent cam timing, where overlap can provide the tiny amount of exhaust needed to keep the combustion temps below the NOX threshold.</p><p></p><p>That's my understanding anyway.:shrug::beer:</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 9691222, member: 11681"] The EGR recirculates a small amount of exhaust gas. The gas functions as a combustion damper and keeps the combustion temps below the point where Nitrogen from the air fuel mixture combines with Oxygen. This keeps NOX levels down in the exhaust. It also helps keep detonation suppressed and allows for more aggressive timing advance. Not exactly sure how this last function exactly works but I suspect it is from the lower combustion temps. On many new engines the EGR has been eliminated by variable independent cam timing, where overlap can provide the tiny amount of exhaust needed to keep the combustion temps below the NOX threshold. That's my understanding anyway.:shrug::beer: [/QUOTE]
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Whats the EGR valve For???
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