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Discussion and questions related to the course Diesel Tuning Fundamentals
smoke limit - is the purpose of the smoke limit purely for emissions standards? or is setting its parameters out of range so it never works unhealthy for the engines preformance?
Bit of both. I think it's the simplest way to account for a LOT of variables. There could be a myriad of reasons why there is insufficient air available for the torque (and therefore fuel) requested at any given time.
17.5:1 or higher = Clean
16.0-17.5 = cleanish but borderline on emissions
14.5-16.0:1 = Greying pipe but still making more power. Will not pass emissions
15:1 or lower (removed smoke control)= Needlessly dirty, spools slower and basically gives diesel a bad name without getting you any more power
My take on it,
The Smoke Limit table example in the course (Colorado I think) can you explain the numbers in table, are they a lambda value ie. 0.95 which is very rich or is it a multiplyer or %?
So to edit this table to not limit fuel do you lower the 0.95 or increase it?
Probably in Lambda, lower number = richer or dirtier...