Quote:
Originally Posted by ConnClark
I would like to know what text books you read. All the books and papers I have read say say egr increases ignition delay.
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we're just talkin' diesel, is there a dif. flame travel between gas and diesel? The hotter the cylinder before the fuel is injected the higher the initial pressure, the faster the burn? May depend on EGR cooler or not. Ignition starts when the fuel is introduced to red hot air. I could see how EGR would lower the
peak pressure. So maybe EGR slows down the burn but not the start not so much, giving the appearance of ignition delay.