Open AccessComparison of Catalytic Conversion Characteristics of Different Integrated Aftertreatment Systems in Diesel Engine
Author(s) -
Naifeng He,
Zhongfeng Jiang,
Zhi Ning
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1578/1/012218
Subject(s) - pollutant , diesel particulate filter , diesel exhaust fluid , diesel exhaust , diesel engine , nox , diesel fuel , automotive engineering , environmental science , exhaust gas recirculation , catalytic converter , exhaust gas , waste management , chemistry , engineering , organic chemistry , combustion
Pollutants such as NOx, HC, CO, and PM emitted by diesel engines will cause serious air pollution. In order to reduce the exhaust emissions of diesel engines, there are mainly DOC, DPF, SCR, AOC, etc. for the after-treatment technology of the engine. Therefore, the use of integrated aftertreatment systems has become a necessary choice. At present, the layout schemes of integrated aftertreatment systems for diesel engines mainly include DOC + DPF + SCR + AOC, DOC + SCR + DPF + AOC, DOC + CDPF + SCR + AOC, DOC + SCR + DPF + AOC, etc. When processing the system, each sub-aftertreatment system will generate a mutual coupling effect. This coupling interference may promote the system’s conversion effect to the pollutants, and it may also weaken the system’s conversion effect on the pollutants. The catalytic conversion characteristics of the integrated aftertreatment system are closely related to exhaust parameters and layout schemes. In this paper, simulation methods are used to compare and study the effects of the above four integrated post-treatment systems on the catalytic conversion characteristics of various pollutants under different exhaust parameters.