Characteristics on GHG emission by the Repair Cycle of Engine in Diesel-powered Locomotive

초록

With the enactment of GHG emission control regulation, developing the GHG emission factor of diesel-powered locomotive has become indispensable to effectively manage emission. However, there has no study to estimate greenhouse emission factor of rail transportation in Korea. As a preparation of developing emission factor, this paper focused on identifying which factors in the operation of diesel-powered train affect emission and whether the difference of repair cycle of engine changes the amount of emission. The experiment covers three principle gases of diesel locomotive 7000 series―CO2, N2O, and CH4 and three different repair cycle of engine cases―0 years old, 3 years old, and 5 years old. As a result, while GHG emission and diesel consumption increase as train’s notch rise, the repair cycle of engine in diesel-powered locomotive is found irrelevant to the amount of emission. This result can contribute to develop the emission factor of diesel locomotives by nullifying one controversial variable--repair cycle of engine--and simplifying observation methodology.