用光纤燃烧传感器测量汽油机的燃烧时间参数  

Measurement of the Combustion Time Parameters of Gasoline Engine by Means of Optic Fiber Combustion Sensor

作　　者：盛凯夫[1,2,3] 张国军[1,2,3] 薛中渝 陈小迅 安承武[1,2,3] 

机构地区：[1]华中理工大学汽车系 [2]东风汽车公司 [3]华中理工大学激光技术国家重点实验室

出　　处：《光电工程》1998年第1期23-28,共6页Opto-Electronic Engineering

基　　金：国家自然科学基金

摘　　要：介绍了一个光纤燃烧传感器＋ＯＭＡ４光多通道分析仪组成的测量系统，用以测量汽油机燃烧火焰光谱。光谱分析结果再次证实了燃烧火焰中ＣＨ（４３１．５ｎｍ），Ｃ２（５１６．５ｎｍ），Ｈ２Ｏ（５８９ｎｍ）等自由基的特征光谱同Ｃ粒子的热辐射连续光谱叠加在一起，构成了火焰光谱。根据光谱曲线中Ｈ２Ｏ光强峰值变化可以确定汽油机燃烧过程中重要的时间参数：着火延迟期和燃烧持续期。由于汽油机燃烧循环变动大，与单色仪＋ＢＯＸＣＡＲ积分平均器组成的测量系统相比，光纤燃烧传感器＋ＯＭＡ４光多通道分析仪系统测量汽油机燃烧火焰光谱测量精度高，工作效率高。A measuring system consisting of the optic fiber combustion sensor and OMA4 multichannel spectral analyzer is presented in the paper and it has been applied to the measuring of the combustion flame spectrum of the gasoline engine.The spectral analysis results prove that the flame spectrum is formed by the adding together of the characteristic spectra of the free radial such as CH(431.5nm),C 2(516.4nm,H 2O(589nm) in the combustion flame and the continuous thermal radiation spectrum of particle C.The important time parameters such as ignition delay and burning lasting time in the combustion process of the gasoline engine can be determined according to the light intensity peak variation of H 2O in the spectral curves.Since the variation in the gasoline combustion cycle is large,compared with the measuring system consisting of monochromator and BOXCAR integral averaging device,the measuring system consisting of OMA4 multichannel spectral analyzer and optic fiber combustion sensor has the advantages of high measuring accuracy and operating efficiency in measuring the flame spectrum of gasoline engine.

关 键 词：光纤传感器 燃烧时间 汽油机 火焰光谱测定法 

分 类 号：TN253.06[电子电信—物理电子学] TK411.21[动力工程及工程热物理—动力机械及工程]