汽车排放测试模态试验及分析方法研究  

Research of Vehicle Emission Test Modal Measurement and Analysis Method

作　　者：金振华[1] 黄开胜[1] 卢青春[1] 聂圣芳[1] 

机构地区：[1]清华大学汽车安全与节能国家重点试验室,北京100084

出　　处：《武汉理工大学学报》2006年第11期103-106,共4页Journal of Wuhan University of Technology

基　　金：清华大学国际合作项目(0510J98)

摘　　要：研究了汽车工况法排放测试的模态试验方法及分析方法。分析了连续稀释采样模态试验原理及计算方法,设计了模态试验测试系统及试验流程,对污染物浓度曲线进行了延迟时间修正,对连续稀释采样试验结果按工况和循环进行了分析。实际应用表明,连续稀释采样试验计算结果与气袋采样试验计算结果接近,模态试验方法及分析方法能够确定工况运行过程中污染物排放的分布情况,为优化发动机控制和降低排放提供了依据。Modal measurement and analysis method of vehicle emission test were discussed, Theory and calculation method of continuous dilution sampling experiment were presented, Emission test system and experiment process were designed. Experiment result of continuous dilution sarnpling was analyzed according to mode and cycle, Field application showed modal measurement and analysis method can provide detailed information for engine control development and reduction of vehicle pollutants emission.

关 键 词：汽车 排放测试 模态试验 

分 类 号：U461.99[机械工程—车辆工程]