engleski

ANALYSIS OF THE EFFECTS OF LOW-SULPHUR FUEL OIL ON MARINE DIESEL ENGINES OPERATION

The purpose of this paper is to discuss and analyse the problems occurring when using low-sulphur fuel oils in marine diesel engine operation as well as the measures taken to prevent damage to individual engine components. The paper discusses the effects of low-sulphur fuels on marine diesel engine operation. Exhaust gas emissions are often directly related to the impurities contained in fuels that are being used. High level of sulphur oxides SOx and nitrogen oxides NOx in the emissions of exhaust gas is an inevitable result of using heavy fuel oil - HFO. Maximum emissions of these oxides are regulated by IMO (International Maritime Organization), according to [3]. Requirements for reducing SOx emissions in certain areas of navigation have resulted in using low-sulphur fuel oils in diesel engine operation. Using HFO with high sulphur contents has become unacceptable after adopting the regulations brought by Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL 73/78), designating some seas as particularly sensitive areas (Emission Control Areas - ECA), and after introducing the monitoring of emissions from ships in ECAs. Maximum allowed sulphur content in fuel in European ECAs amounts to 0.1 % for ships in ports and all inland waterways across the European Union, whereas California Air Resources Board (CARB) applies the regulation limiting the sulphur content in fuel to 0.1 % within 24 nautical miles of the California's coastline, according to [1], [3].

Low - sulphur fuel; lubrication; combustion; leakage; viscosity.

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