Under water emissions from a two-stroke outboard engine ― a comparison between an EAL and an equivalent mineral lubricant

摘要

The emissions to water from a 1.9 kW two-stroke outboard engine were investigated in the laboratory and in the field, with the primary objective being to characterise and quantify the pollutants that remain within the water column. The emission rates of Polycyclic Aromatic Hydrocarbons (PAHs) and Volatile Organic Compounds (VOCs) were determined for the engine when using a mineral and an equivalent Environmentally Adapted Lubricant (EAL). A further comparison of the emission rates was conducted between the results from the fresh and sea water tests. The results showed that there was little difference in the emission rates of these pollutants when either of the lubricants was used in both the fresh and sea water.