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Old 08-21-2011, 06:46 PM   #340 (permalink)
euromodder
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The SCUD - '15 Fiat Scudo L2
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Quote:
Originally Posted by hackish View Post
I've been running a ferret 5 gas analyzer on the tailpipe

Thus far summing the sample interval (5 seconds I think) the output of HC/NOX and COX gasses were in the neighbourhood of 5-6x that of a steady cruise the entire time.
A 0.2 Hz sample rate seems low , though it's likely giving a good indication of where things are going.

Could you increase the sample rate ?
This is interesting stuff - and there are worse pollutants out there than CO2 / fuel used.


How old is your test car ?
[1993]
This may be a case where the ECUs on newer cars might do better than the old ones to keep pollutants down at start-up and during acceleration.

Any chance of testing it on a new(ish) car ?
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