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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Ultra-Large 140 Bore 5000 Engine<br />
120<br />
On-line NOx-BOX Observer System<br />
Pmax (bar)<br />
100<br />
• The analysis <strong>of</strong> “Tokyo Express” sea trials, led to the necessity <strong>of</strong> NOx-BOX<br />
80<br />
measured<br />
2000<br />
predicted<br />
prototype recalibration.<br />
60<br />
kW/CYL<br />
4000<br />
3000<br />
1000<br />
20 40 60 80 100<br />
Load %<br />
20 40 60 80 100<br />
Load %<br />
40000<br />
• The severe fluctuations 24 <strong>of</strong> predicted NOx emissions and brake power at part<br />
loads were attributed 20to:<br />
30000<br />
NOx [gr/kWh]<br />
16<br />
• the deviation <strong>of</strong> “Tokyo Express” propeller curve from “Antwerpen<br />
12<br />
Express” propeller curve, used in initial calibration.<br />
10000<br />
8<br />
• the narrow initial calibration range <strong>of</strong> prototype<br />
20 40 60 80 100<br />
Load %<br />
50 60 70 80 90 100<br />
Engine rpm<br />
• Recalibration was performed with use <strong>of</strong> the results <strong>of</strong> the “Tokyo Express”<br />
sea trials.<br />
Pb [kW]<br />
20000<br />
Athens, October 8, 2003<br />
<strong>Final</strong> <strong>Presentation</strong>
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