CRC Report No. A-34 - Coordinating Research Council
CRC Report No. A-34 - Coordinating Research Council
CRC Report No. A-34 - Coordinating Research Council
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April 2005<br />
3. Set the average diesel g/mi emission rate equal to the average for gasoline vehicle<br />
exhaust (as requested by DRI).<br />
4. Set the running loss g/mi emission rate to 5% of gasoline exhaust on average, but vary<br />
between runs in proportion to the temperature minus 50 ºF.<br />
5. Scale emission factors between runs in proportion to the number vehicles and to obtain an<br />
overall average of ~1.7 g/mi TNHMC as observed in the real study. The g/mi emission<br />
factors for each emissions type in each tunnel study run are shown in Table 2-16.<br />
6. Speciate the tunnel study emissions using the same speciation profiles as for experiment<br />
1.<br />
7. Correct the tunnel speciation for background (as requested by DRI). <strong>No</strong> correction was<br />
necessary because no background had been introduced into the tunnel samples.<br />
8. Introduce measurement noise into the speciation results for each run using the same<br />
algorithm as for the ambient samples. The final speciated emissions for each tunnel<br />
study run are shown in Table 2-14.<br />
H:\crca<strong>34</strong>-receptor\report\Final\sec2.doc 2-22
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