| 中重型柴油机SCR系统集成匹配研究 |
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| 引用本文： | 任贵峰,王国莹,付海燕,仲蕾,程秀围,任庆霜,贾晓亮.中重型柴油机SCR系统集成匹配研究[J].车用发动机,2015(6). |
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| 作者姓名： | 任贵峰 王国莹 付海燕 仲蕾 程秀围 任庆霜 贾晓亮 |
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| 作者单位： | 1. 陕西北方动力有限责任公司,陕西 宝鸡,721300;2. 中国北方发动机研究所 天津,天津,300400;3. 装甲兵驻 616 厂军事代表室,山西 大同,037036 |
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| 基金项目： | 国家高技术研究发展计划“863”计划 |
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| 摘 要： | 针对高紧凑高效清洁柴油机的开发,选取了SCR后处理技术路线,为了实现国Ⅴ的排放指标要求,分别进行了SCR催化剂及催化器载体的分析与匹配,SCR尿素喷射系统的匹配标定研究,并通过三维仿真分析方法以及尿素喷射水解、热解和化学反应动力学理论完成了喷射管路布置方式的优化设计及SCR系统转化效率的计算与验证。通过发动机台架试验验证了通过上述方法匹配的SCR系统可以满足国Ⅴ的排放指标要求。
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| 关 键 词： | 中重型柴油机 选择性催化还原 集成 匹配 |
Integration and Matching of SCR System for Medium and Heavy Duty Diesel Engine |
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| Abstract: | For the development of highly compact,efficient and clean diesel engine,the technical route of SCR aftertreatment was selected.In order to meet China Ⅴ emission standard,the analysis and matching of SCR catalysts and catalyst substrates were respectively conducted and the calibration of urea injection system was studied.The optimized design of injection pipe lay-out and the calculation and verification of SCR conversion efficiency were further carried out based on 3D simulation and theory of urea hydrolysis,pyrolysis and chemical reaction kinetics.The calibrated SCR system was verified to be able to meet China Ⅴemission requirement by the bench test. |
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| Keywords: | medium and heavy duty diesel engine selective catalyst reduction(SCR) integration matching |
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