Diesel main and auxiliary engines are main sources of air pollution from ships mooring in ports. Auxiliary engines are used in electrical grids that are essential for the operation of a ship. In many reports and academic publications the estimated amount of exhaust emission, calculated by means of the assumed marine auxiliary engine load factor, is used in order to assess the operation of marine power plants with respect to environmental protection. The factors influencing the marine auxiliary engine load factors are: the auxiliary engine excess power versus generator power and generator efficiency. However, these factors are rarely taken into account. In the present paper the importance of engine excess power and the efficiency of marine generating sets for the evaluation of real auxiliary engines load and exhaust emission related to it is discussed. Besides, the results of in-service experience of exhaust emission from marine auxiliary engines on the example of Ro-Pax vessel are presented.
Na podstawie badań eksploatacyjnych stanu wybranych olejów smarowych firmy BP, użytkowanych w okrętowych silnikach pomocniczych na statkach Grupy PŻM, dokonano analizy i oceny zmian lepkości, liczby zasadowej i temperatury zapłonu tych olejów oraz zawartości w nich wody i zanieczyszczeń.
EN
On the basis of operational research on the condition of selected BP lubricating oils used in auxiliary engines of the Polish Steamship Company vessels, the author analyzes and assesses the changes in viscosity, base number and flashpoint of these oils, as well as their water content and pollution.
Dokonano analizy statystycznej zmian parametrów eksploatacyjnych różnych gatunków olejów smarowych produkcji firm zachodnich, użytkowanych w okrętowych tłokowych silnikach spalinowych. Opracowano analityczne wskaźniki starzenia tych olejów w monitorowanych silnikach.
EN
A statistical analysis of changes made in operational parameters of various kinds of lubrication oils produced by Western firms used in marine piston diesel engines has been completed. Analytic ageing indexes of these oils in tested engines have been calculated.
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