| SCR系统闭环控制策略的研究 |
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| 引用本文： | 曹学谦.SCR系统闭环控制策略的研究[J].北京工业职业技术学院学报,2014,13(3):26-33. |
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| 作者姓名： | 曹学谦 |
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| 作者单位： | 同济大学汽车学院,上海,201804 |
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| 摘 要： | 在汽车排放污染物日益增加和汽车排放法规日益严格的背景下,介绍SCR系统闭环控制策略的控制逻辑,分析如何通过氮氧化合物传感器的读数实现SCR系统闭环控制尿素喷射量.而后通过发动机台架试验的排放试验结果,对比分析闭环控制相对开环控制的优势,研究闭环控制策略在实际匹配应用中的价值.
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| 关 键 词： | 选择性催化还原系统 闭环控制策略 氮氧化合物排放 |
Investigation of SCR System Closed-loop Control Strategy |
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| Cao Xueqian.Investigation of SCR System Closed-loop Control Strategy[J].Journal of beijing vocational & technical institute of industry,2014,13(3):26-33. |
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| Authors: | Cao Xueqian |
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| Institution: | Cao Xueqian ( Tongji University, School of Automotive Studies, Shanghai 201804, China) |
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| Abstract: | In the background of increasingly serious automobile exhaust pollution and increasingly strict automobile emission legislation, this paper mainly introduces the algorithm of SCR system closed-loop control strategy, analyzes how to achieve the urea flow rate calculation by closed-loop on the basis of the data of NOx sensor, then based on the engine emission tests on engine test bench, compares the open-loop emission result and closed-loop emission result to analyze the advantage of closed-loop, and finally investigate the value of using closed-loop in application. |
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| Keywords: | SCR system closed-loop control strategy NOx emission |
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