Abstract
The paper analyses and assesses the operating expenses of freight Diesel locomotives 2M62, 2M62K, 2M62M and ER20CF, suggesting the ways of their reduction. Given the damages of the old locomotive M62 and the structure of its operating expenses, some methods of Diesel locomotives’ upgrading are offered. Service life of new generation Diesel locomotives SIEMENS ER20CF and the locomotives 2M62K, 2M62M after the upgrade are determined. The taxes on air pollution by the exhaust gases of Diesel engines are calculated for the locomotives of each series. The effectiveness of operation of freight Diesel locomotives is calculated by three multicriteria evaluation methods and the most efficient freight Diesel locomotive for Lithuanian Railways is determined based on a set of criteria. Basic conclusions are also given. Santrauka Straipsnyje analizuojamos ir vertinamos AB, Lietuvos geležinkeliai” 2M62, 2M62K, 2M62M ir ER20CF serijų prekinių šilumvežių eksploatavimo sąnaudos ir pateikiami būdai joms mažinti. Įvertinus senųjų 2M62 serijos prekinių šilumvežių gedimų ir eksploatavimo išlaidų struktūrą, siūlomos šilumvežių modernizavimo kryptys. Apskaičiuojamos modernizuotų šilumvežių (2M62K ir 2M62M) bei naujos kartos ER20CF serijos šilumvežių lyginamosios degalų sąnaudos ir mokesčiai už oro taršą dyzelių išmetamosiomis dujomis. Trimis metodais atliktas daugiakriterinis tiriamųjų šilumvežių veiksmingumo vertinimas ir pagal pasirinktus parametrus nustatytas racionaliausias AB, Lietuvos geležinkeliai” prekinis šilumvežis. Pateiktos pagrindinės išvados. Резюме Проанализированы и оценены эксплуатационные расходы грузовых тепловозов АО «Литовские железные дороги» серий 2М62, 2M62 K, 2M62M и ER20CF, представлены пути их уменьшения. В результате оценки структуры неисправностей и эксплуатационных расходов старых грузовых тепловозов серии 2М62 предложены способы модернизации упомянутых локомотивов. Рассчитаны удельные расходы топлива и налоги за загрязнение воздуха выхлопными газами дизелей модернизированных локомотивов (2M62 K и 2M62M) и тепловозов нового поколения серии ER20CF. Тремя методами выполнена много критериальная оценка эффективности использования исследуемых тепловозов. На основе выбранных параметров определен наиболее рациональный грузовой тепловоз АО «Литовские железные дороги». Представлены основные выводы.
Highlights
Railway transport should provide safe transportation for freight and for passengers as well
The operating expenses of an upgraded locomotive from the series 2M62M make only a half of the operating expenses of the old locomotive, being by 1.4 times smaller than those of the locomotive after modernisation M1
These Diesel locomotives are more powerful and reliable and a smaller number of them are needed for transporting the same mass of goods
Summary
Railway transport should provide safe transportation for freight and for passengers as well. The economic policy of the Board Directors in Freight Transportation LG Company largely determines its overall profit This means that the effective use of the available rolling stock is of paramount importance (Liudvinačius, Lingaitis 2010; Bureika et al 2009; Dailydka et al 2008; Djukić et al 2010; Bureika, Mikaliūnas 2008). The upgraded locomotives were more powerful and could pull the trains of 5000 tons, which were by 20% heavier than those pulled by old locomotives This has increased the carrying capacity as well as efficiency of Lithuanian railway by about 10%. Due to the use of new locomotives Siemens ER20CF generation, diesel oil consumption was reduced by 40–45% compared to that of not upgraded locomotives 2M62, while the train mass increased from 4200 tons to 6000 tons (Bureika 2008). The author of the present paper attempts to determine the multicriteria evaluation methods (Brans, Vincke 1985; Sivilevičius et al 2008; Šelih et al 2008; Jakimavičius, Burinskienė 2009; Turskis et al 2009; Sivilevičius, Maskeliūnaitė 2010; Edalat et al 2010; Čokorilo et al 2010; Vasilis Vasiliauskas et al 2010) and which of the three types of the locomotives, stated above, would be the most suitable and effective for freight transportation on LG company
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