A Study on the Performance Deterioration of SCR for Heavy-Duty Diesel Vehicles 2019-01-2235
In this study, a six litres displacement, commercial vehicle engine that meets the EURO-5 regulation was used to evaluate the durability and performance deterioration of the SCR system mounted on a heavy-duty diesel vehicle. ESC and ETC modes were used for emission test. Characteristics of emissions by SCR catalyst deterioration were investigated using mileage vehicles of 0 km, 120,000 km, and 360,000 km. EDS (Energy Dispersive X-Ray Spectroscopy) analysis on PM filters and CT scan to catalyst substrate were carried out in order to investigate the status of catalyst by each mileage. As a result, it was found that NOX, slipped NH3 as well as PM due to unreacted ammonia and urea increased as the mileage of the catalyst increased.
Citation: Kwon, M., Park, G., Lim, H., Kim, J. et al., "A Study on the Performance Deterioration of SCR for Heavy-Duty Diesel Vehicles," SAE Technical Paper 2019-01-2235, 2019. Download Citation
Manjae Kwon, Giyoung Park, Hyunjae Lim, Jungjun Kim, Seangwock Lee, Kiho Kim, Hoyoung Song
Graduate School of Automotive Engineering, Kookmin Universit, Department of Automotive Engineering, Kookmin University, Research Institute of Petroleum Technology, Korea Petroleum
2019 JSAE/SAE Powertrains, Fuels and Lubricants