10-03-2006, 06:15 AM
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#1
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Registered Member
Join Date: Oct 2005
Posts: 682
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Managing EGR for MPG
I understand why WAI helps fuel economy. Basically, it allows the engine to suck in a smaller mass of air into the engine throught a wider throttle setting. This reduces manifold vacuum, and therefore reduces engine pumping losses.
Another way to achieve the same effect could be by adding exhaust to the intake. First, exhaust is hot, so it would have an WAI effect. Secondly, it would reduce the O2 content of the intake, so less fuel would be added during closed loop operation.
EGR is often used to reduce NOx emissions. Has any Gassaver tested EGR for fuel economy?
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