| 车用三效催化转化器劣化性能参数灰色关联分析 |
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| 引用本文： | 毛丽,龚金科,刘冠麟.车用三效催化转化器劣化性能参数灰色关联分析[J].中南大学学报(自然科学版),2012,43(2):511-515. |
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| 作者姓名： | 毛丽 龚金科 刘冠麟 |
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| 作者单位： | 1. 湖南大学机械与运载工程学院,湖南长沙,410082;湖南交通职业技术学院,湖南长沙,410004
2. 湖南大学机械与运载工程学院,湖南长沙,410082 |
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| 基金项目： | 湖南省科技计划重点项目(2009CK2001);湖南省高等学校科学研究一般项目(11C0494) |
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| 摘 要： | 建立老化机理与化学反应结合、铂(Pt)颗粒平均直径与反应频率因子修正化学反应的三效催化转化器劣化仿真模型.通过将NO和CO转化效率的仿真结果与实验结果对比,验证模型的有效性,并将仿真结果进行灰色关联分析.研究结果表明:过量空气系数、入口温度、扩张角、行驶里程的关联度均大于0.5,均是影响三效催化转化器劣化性能的主要因素,其中行驶里程的关联度最大,是最主要的影响因素,与事实相符,证明灰色关联分析方法用于分析三效催化转化器劣化影响因素是有效的.
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| 关 键 词： | 三效催化转化器 劣化性能 仿真 灰色关联分析 |
Grey relational analysis on deterioration performance parameters of automotive three-way catalytic converter |
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| MAO Li
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GONG Jin-ke
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LIU Guan-lin.Grey relational analysis on deterioration performance parameters of automotive three-way catalytic converter[J].Journal of Central South University:Science and Technology,2012,43(2):511-515. |
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| Authors: | MAO Li GONG Jin-ke LIU Guan-lin |
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| Institution: | 1 (1.College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,China; 2.Hunan Communication Polytechnic College,Changsha 410004,China) |
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| Abstract: | Simulation model on deterioration of three-way catalytic converter was obtained after combining deterioration mechanism and chemical reaction and revising chemical reaction with the average diameter of Pt and frequency factors.Model was verified by comparing the experimental results and the conversion efficiency of No and CO,and grey relational analysis was processed on the simulation results.The results show that the relational degree of excessive air coefficient,inlet temperature,divergence angle and mileage are greater than 0.5 and they are the main factors of deterioration performance of automotive three-way catalytic converter.Moreover,mileage is the most essential influencing factor,whose grey relational analysis can be applied to the analysis in affecting factors of the deterioration performance of automotive three-way catalytic converter. |
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| Keywords: | automotive three-way catalytic converter deterioration performance simulation grey relational analysis |
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