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Results tagged with emissions
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user 22919
The various chemicals emitted in exhaust gasses from an internal combustion engine. The usual gasses which are measured through emissions testing are Nitrogen Oxide (NO2), Carbon Monoxide (CO2), and HydroCarbons (HC).
3
votes
0
answers
47
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When will a new emission driving cycle be implemented?
For emssion tests, they have used the NEDC driving cyle here in Europe for quite a while now. I'm not sure about America and Asia, but i believe they use similar driving cycles. After the emission iss …
- 2,954
1
vote
1
answer
2k
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What formula is used when deriving AFR/lambda value from emissions?
When you get your vehicle hooked up to a gas analser, you'll see the 4 or 5 kinds of emissions you're interested in, and a lambda or AFR value derived from those emission values. … I was wondering how the AFR is derived from those emissions. …
- 2,954
2
votes
2
answers
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Is it possible for me to see oxygen, caused by valve overlap, in the exhaust gases?
Recently I put my car on the 4 gas analyser, and it gave me these results at idle:
CO2: 10.64 %
CO: 4.98 %
O2: 1.94 %
HC: 148 ppm
Lambda value: 0.93/13.7AFR
I have to mention that it concerns a …
- 2,954