| 汽油机瞬态排放间接检测的实践(Ⅰ) |
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| 引用本文： | 张雨. 汽油机瞬态排放间接检测的实践(Ⅰ)[J]. 南京工程学院学报(自然科学版), 2005, 3(3): 6-11 |
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| 作者姓名： | 张雨 |
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| 作者单位： | 南京工程学院机械工程系,江苏,南京,210013 |
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| 基金项目： | 国家自然科学基金资助项目（50176006）. |
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| 摘 要： | 瞬态排放间接检测是对汽油机在汽车加速-滑行组合、节气门加速开启-关闭等瞬态工况下进行法规性检测、获得其排放状况的基本手段之一．讨论了汽油机瞬态排放间接检测的有关基础,主要内容有:建立能够方便实现瞬态工况的工程化措施;分析采用五组分排放分析仪检测汽油机瞬态排放信号将导致畸变的原因;设置瞬态排放特征参数——符号时间序列分析的Shannon熵．
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| 关 键 词： | 汽油机 瞬态排放 间接检测 频率响应特性 符号时间序列分析 |
| 文章编号： | 1672-2558（2005）03-0006-06 |
| 收稿时间： | 2005-04-28 |
| 修稿时间： | 2005-04-28 |
The Practice of Indirect Inspection of Transient Emission of Gasoline Engine (Ⅰ) |
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| ZHANG Yu. The Practice of Indirect Inspection of Transient Emission of Gasoline Engine (Ⅰ)[J]. Journal of Nanjing Institute of Technology :Natural Science Edition, 2005, 3(3): 6-11 |
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| Authors: | ZHANG Yu |
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| Abstract: | The indirect inspection of transient emission is one of the basic measurements to achieve the exhaust situation of gasoline engine by law inspection in the transient conditions such as vehicle acceleration-coasting or carburetor accelerating turn on-off. In this paper the elements of indirect inspection of transient emission of gasoline engine are discussed.The engineering steps to expediently realize the transient condition are put forward;the reason why the aberrance will be produced when a five components exhaust analyzer is adopted to indirectly inspect the transient emission signals of gasoline engine is analyzed; the Shannon entropy of symbolic time series analysis, as a characteristic parameter of transient emission, is offered. |
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| Keywords: | gasoline engine transient emission indirectly inspecting frequency response characteristics symbolic time series analysis |
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