LIFETIME Final Presentation - Laboratory of Marine Engineering
LIFETIME Final Presentation - Laboratory of Marine Engineering
LIFETIME Final Presentation - Laboratory of Marine Engineering
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Analysis<br />
Observations:<br />
• For a fixed Pmax, decreasing Pcomp (or increasing Pmax minus Pcomp<br />
pressure) results in decreasing NOx. The effect is small at high loads, but<br />
stronger at lower loads<br />
• The HC emission at high loads (75% and 100%) is not affected by either Pmax<br />
or Pcomp variations<br />
• CO emissions decrease with increasing Pcomp, i.e. decreasing with higher<br />
air/fuel ratio caused by larger air amount trapped in the cylinder at the higher<br />
compression pressure<br />
• The effect <strong>of</strong> Pmax and Pcomp on PM (Particulate matter) emission follows the<br />
same trend as that <strong>of</strong> HC emission<br />
• Use <strong>of</strong> the compression pressure influence on NOx emissions, in the<br />
MAN B&W NOx function.<br />
Athens, October 8, 2003<br />
<strong>Final</strong> <strong>Presentation</strong>
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