| 车用三效催化转化器剩余寿命的非等间隔灰色预测 |
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| 引用本文： | 毛丽,左青松,刘冠麟,龚金科. 车用三效催化转化器剩余寿命的非等间隔灰色预测[J]. 中南大学学报(自然科学版), 2012, 43(4): 1351-1354 |
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| 作者姓名： | 毛丽 左青松 刘冠麟 龚金科 |
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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： | 为了有效预测车用三效催化转化器的剩余寿命,在进行快速老化试验后,采用氮吸附法测定三效催化转化器比表面积,并在其实验比表面积减小率的基础上采用非等间隔灰色预测模型对车用三效催化转化器剩余寿命进行预测,并对其预测结果的残差进行后验差检验.研究结果表明:在进行快速老化试验204 min后,比表面积减小6.42％,即车用三效催化转化器耐久性寿命至少还有12万km:后验差比值C＜0.35,小误差概率P＞0.95,表明车用三效催化转化器剩余寿命的非等间隔灰色预测模型预测结果具有较高的精度.
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| 关 键 词： | 车用三效催化转化器 剩余寿命 非等间隔灰色预测模型 |
Residual life prediction of three-way catalytic converter by using non-equidistance grey forecasting model |
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| MAO Li , ZUO Qing-song , LIU Guan-lin , GONG Jin-ke. Residual life prediction of three-way catalytic converter by using non-equidistance grey forecasting model[J]. Journal of Central South University:Science and Technology, 2012, 43(4): 1351-1354 |
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| Authors: | MAO Li ZUO Qing-song LIU Guan-lin GONG Jin-ke |
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| Affiliation: | 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: | In order to effectively forecast residual life of three-way catalytic converter,a nitrogen adsorption method was employed to measure the specific surface of three-way catalytic converter.Based on its experimental data,the residual life of the three-way catalytic converter was forecasted by the non-equidistance grey forecasting model.The posterior difference was processed for residual error on forecast.The results show that the specific surface reduction rate is 6.42%,and the residual life of three-way catalytic converter is not less than 120 000 km after aging 204 min.C<0.35,P>0.95,which indicates that the non-equidistance grey forecasting model has favourable accuracy with first degree. |
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| Keywords: | three-way catalytic converter residual life non-equidistance grey forecasting model |
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