Experimental investigations are conducted with a marine diesel engine to examine the effect of ambient conditions on NOx emission. NOx concentration of exhaust gas of a two-stroke, crosshead type, exhaust turbo charged diesel engine was measured under various temperatures and humidities of scavenging air. Comparing the results obtained during the winter season with the summer season, the effect of room temperature on NOx emission is also examined. It is found that the concentration of NOx emission increases linearly with scavenging air temperature and decreases as scavenging air humidity increases. Concerning the effect of room temperature on NOx emission, the data points are somewhat scattered and the general tendency is not evident within the limits of this experiment. Furthermore, it appears that the amount of scavenging air has an effect on NOx emission considering the change in measured NOx concentrations before and after engine overhaul. Weighting factors in the correction equation defined by ISO are compared with the factors derived from the experimental results.
Effect of intake air on NOx emissions from two-stroke marine diesel engine
Einfluß von Einlaßluft auf Stickoxidemissionen des Zweitakt-Schiffsdieselmotors
1995
4 Seiten, 7 Bilder, 4 Tabellen, 2 Quellen
Conference paper
English
Sulzer's 2-stroke marine Diesel engine
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