Research on influence of selected failures on the exhaust gas content of ship diesel engine working on heayy fuel oil

The article is devoted to problems connected with pollution of the atmosphere by ship engines. Atmosphere protection against pollution on sea vessels covers one of the most important areas of human ecological activity which has its own history as well as some achievements. The most crucial ones include 73/78 MARPOL Convention (International Convention for the Prevention of Pollution from Ships) referring to prevention against marine environment pollution, and later amendments to the Convention with Annex VI (Regulation for the Prevention of Air Pollution from Ships) dealing with reducing the emission of nitric oxides and sulphur oxides into the atmosphere by sea vessels engines Nitric oxides emissions from a given engine will depend on engine technical condition. Therefore it was to decided execute laboratory tests on influence of selected failures ship diesel engine, on its exhaust gas content, first of all on change nitric oxygen emission level. The article presents the results of experimental tests of the influence of charging air pressure, injection advance angle and injector opening pressure on content of exhaust gas, especially content nitric oxides (NOx), of ship diesel engine supplied with marine heavyfuel oil IF4.