Advances in emission control of diesel vehicles in China |
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Authors: | Hong He Guangyan Xu Wenpo Shan Yunbo Yu Yulong Shan Xiaodong Wu Ye Wu Shaojun Zhang Liqiang He Shijin Shuai Hailong Pang Xuefeng Jiang Heng Zhang Lei Guo Shufen Wang Feng-Shou Xiao Xiangju Meng Feng Wu Dongwei Yao Yan Ding Hang Yin |
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Affiliation: | Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;Tsinghua University, Beijing 100084, China;Army Military Transportation University, Tianjin 300161, China;Dongfeng Motor Corporation, Wuhan 430101, China;China National Heavy Duty Truck Group Company Limited, Jinan 250000, China;Zhejiang University, Hangzhou 310027, China;Chinese Research Academy of Environmental Sciences, Beijing 100012, China |
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Abstract: | Diesel vehicles have caused serious environmental problems in China. Hence, the Chinese government has launched serious actions against air pollution and imposed more stringent regulations on diesel vehicle emissions in the latest China VI standard. To fulfill this stringent legislation, two major technical routes, including the exhaust gas recirculation (EGR) and high-efficiency selective catalytic reduction (SCR) routes, have been developed for diesel engines. Moreover, complicated aftertreatment technologies have also been developed, including use of a diesel oxidation catalyst (DOC) for controlling carbon monoxide (CO) and hydrocarbon (HC) emissions, diesel particulate filter (DPF) for particle mass (PM) emission control, SCR for the control of NOx emission, and an ammonia slip catalyst (ASC) for the control of unreacted NH3. Due to the stringent requirements of the China VI standard, the aftertreatment system needs to be more deeply integrated with the engine system. In the future, aftertreatment technologies will need further upgrades to fulfill the requirements of the near-zero emission target for diesel vehicles. |
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Keywords: | Corresponding author. Diesel vehicles Legislation Emission control Aftertreatment system Nitrogen oxides Particulate matter |
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