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Originally Posted by Daox
I've heard that a 40% EGR mixture is the absolute maximum that an engine can handle before misfires occur and things start to go downhill. Darin thinks he read that it is more like 20%.
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20 percent-
ish.
I found my source for that figure, which is itself a quote of some kind of edumacational book:
Air induction, EGR, and fuel economy (John De Armond; Bob Hale)
Quote:
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I looked up your reference (Internal Combustion Engine Fundamentals, Heywood, page 837,838). Very interesting. Appears from his chart that BSFC minimizes at about 25% EGR.
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Quote:
It should be pointed out that the chart in question shows large gains for fast burn chamber designs. On the same chart is a line for slow
burn chambers that shows much less improvements and then only at
low (5-10%) EGR injection.
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Anybody else other than me having a GS flashback?