Analysis on Evolution and Frontier Research of Selective Catalyst Reduction Technology for Diesel Engine Based on Bibliometrics

摘要

Diesel engines are widely used in medium and heavy vehicles because of higher dynamic performance and lower oil consumption. However, the problems about pollution of diesel exhaust emission begin to stand out. Selective Catalytic Reduction Technology is one of the main methods of emission treatment of diesel-engine applications. This paper uses the literatures which are retrieved from the Web of Science as data source. With the information visualization software Citespace, exploring the development trend of the Selective Catalyst Reduction Technology for diesel engine. Through keywords burst detection to determine hot words of frontier topics; and building heterogeneous clustering network of keywords and co-citation literatures to reveal the frontier framework. Finally, retrieving innovative literatures based on frontier knowledge and co-citation literature clusters; then refining frontier topics of the Selective Catalyst Reduction Technology. The results show that current research on SCR technology for diesel engine is focused on the load, performance and denitrification efficiency of copper supported on different carriers. The research on enhancing the resistance to H2O and anti-SO2 of SCR catalyst at low temperature is also the focus of SCR technology study. Besides, it is also actively exploring the optimization and improvement of control strategy for SCR aftertreatment system.