Emission Rates of Air Pollutants Exhausted from Railroad Diesel Engines

It is widely known that the railroad diesel locomotive engines emit significant amount of air pollutants. However, these engines are not equipped with any air pollutants reducing devices in Korea, resulting in the accumulative air pollution near the railroad. Because the pollutants emission from driving locomotive engines cannot be measured directly, the emission factors based on the amount of consumed fuel are widely used for the assumption of the total emission from these engines. In this study, we estimated the total air pollutants emission from a railroad diesel locomotive operated on Seoul-Busan Railway Line by using our new method (named as KR method). The actual driving pattern of Seoul-Busan Railway Line and the weighting factors for each power mode was reflected in our calculation to gain more accurate values. KR method can be used for any other railroad lines operated by the diesel locomotives in any countries to estimate the total air pollutants emissions if the simple information of driving pattern, driving power mode, and types of engine model can be provided.