柴油车排放法规及后处理技术的现状与展望.pdf

x State of the art and outlook of diesel emission regulations and aftertreatment technologies SHUAI Shijin, TANG Tao, ZHAO Yanguang, HUA Lun State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Abstract: Diesel engine has advantages of low fuel consumption, high torque output and wide power range, and has been widely used in transportation and engineering machinery as a power. The diesel powered vehicles can only meet future stringent emission regulations using aftertreatment devices. This paper compared the different vehicle emission regulations in Europe, the USA, Japan and China, and analyzed in-cylinder and aftertreatment technical approaches to meet the emission regulations for light-duty and heavy-duty diesel vehicles. The research status of the mainstream aftertreatment technologies like diesel oxidation catalyst (DOC), nitrogen oxides (NO ) selective catalytic reduction (SCR), lean NO trap (LNT) and diesel particulate fi lter (DPF) x x was described and discussed. The future development of the diesel emission regulations and aftertreatment technologies was prospected. Key words: diesel engine; emission regulation; aftertreatme nt; selective catalytic reduction (SCR); diesel particulate fi lter (DPF)