| 摘要:介绍了机动车不同排放后处理系统的老化机理，指出:影响TWC、DOC、SCR老化的主要因素为热老化，而影响GPF和DPF老化的主要因素为灰分积聚。介绍了汽油机TWC、GPF快速老化技术以及柴油机后处理装置快速老化技术，包括小样台架快速老化、马弗炉快速老化、DOC前喷油快速老化、DPF灰分加载快速老化、燃烧器快速老化等，并比较分析了各种快速老化技术的特点及应用情况。 |
| 关键词: 排放后处理系统 耐久性 快速老化 燃烧器 |
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| Review of Rapid Aging Technologies of Vehicle After-Treatment System |
| Zheng Jian,Li Zhongzhao,Guan Bin,Wen Canhua,Li Youping |
| Key Laboratory for Power Machinery & Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240 |
| Abstract:Aging mechanism for vehicle after-treatment devices is discussed. The primary mechanism of TWC/DOC/SCR deactivation is thermal aging, and ash deposition represents the most important aging mechanism for GPF/DPF.Current accelerated aging technologies for TWC and GPF used in gasoline engines are introduced respectively, and rapid aging technologies of diesel after-treatment system, including small sample in laboratory reactor, increasing temperature in furnace, engine bench installing fuel injection system in front of DOC, fuel doping generated ash for DPF, accelerated aging using burner are presented. The characteristics of various rapid aging technologies and their application are compared and summarized. |
| Key words: emission after-treatment system durability rapid aging burner |
