| 基于OBD系统的失火诊断与排放分析 |
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| 引用本文： | 王震,方茂东,颜伏伍,邹斌,王建海,杜建波.基于OBD系统的失火诊断与排放分析[J].车用发动机,2007(2):58-61. |
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| 作者姓名： | 王震 方茂东 颜伏伍 邹斌 王建海 杜建波 |
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| 作者单位： | 1. 武汉理工大学汽车工程学院,湖北,武汉,430070
2. 中国汽车技术研究中心,天津,300162 |
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| 基金项目： | 国家环保局与日产合作资助项目 |
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| 摘 要： | 车载诊断(OBD)系统是实施国Ⅲ和国Ⅳ排放标准的核心内容,发动机失火诊断是OBD系统重要功能之一。指出了发动机失火的原因和危害;分析了OBD失火诊断监测方法、诊断原理和故障处理方法;根据OBD对发动机失火监控原理,说明了基于曲轴转速波动的失火诊断策略,并通过发动机失火发生装置模拟发动机失火,分析了失火时的曲轴转速波动和排放情况。试验研究结果表明,发动机发生失火时,曲轴转速有较大下降,HC和CO排放随着失火率的增加迅速升高。
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| 关 键 词： | 车载诊断 汽车发动机 失火 监控策略 排放控制 |
| 文章编号： | 1001-2222(2007)02-0058-04 |
| 修稿时间： | 2006-08-08 |
Research on OBD Diagnostic Strategy and Emissions of Engine Misfire |
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| WANG Zhen,FANG Mao-dong,YAN Fu-wu,ZOU Bin,WANG Jian-hai,DU Jian-bo.Research on OBD Diagnostic Strategy and Emissions of Engine Misfire[J].Vehicle Engine,2007(2):58-61. |
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| Authors: | WANG Zhen FANG Mao-dong YAN Fu-wu ZOU Bin WANG Jian-hai DU Jian-bo |
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| Institution: | 1. Wuhan University of Technology, Wuhan 430070, China 2. China Automotive Technology Research Center, Tianjin 300162, China |
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| Abstract: | On-board Diagnosis(OBD) system is the key part of the implement of Stage Ⅲ and Ⅳ emission standards,and misfire diagnosis is one of the most important OBD functions.This paper indicates the causes and damages of engine misfire,analyses misfire monitoring method、diagnostic principles and malfunction-dealing methods.According to the OBD monitoring principles,the diagnostic method based on the crankshaft speed fluctuation is illuminated.The misfire generator is used to simulate misfire phenomena.Some details of crankshaft speed fluctuation and emissions are analyzed while misfire.The test results show that crankshaft speed declines obviously while misfire and HC and CO emissions raise rapidly as the increase of misfire rate. |
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| Keywords: | OBD automotive engine misfire monitoring principles emission control |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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