Quote:
Originally Posted by IamIan
... this suggests there is a break even point ... where the 0% of bypassed fuel energy used in the ICE is a bigger waste of fuel than the lower % ICE efficiency of the purge cycle ... I wonder where that break even point is.
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I've been casually following this, and it is really gratifying to see the thread veer from fantasy land not just back to reality, but to such an in-depth discussion of combustion control.
I'd have to think that the difference in actual fuel consumption would be hard to measure even at a constant speed lab dyno test. My guess is that, in both cases, the maximum unburned HC going into the converter is no more than 1% of the fuel burned in the cylinder. Generally 1% excess HC seems to be about the limit of what a converter can tolerate.
But I am speaking from relative ignorance... I'm posting mainly to say thanks for the good discussion.