用光纤传感系统对汽油机燃烧循环变动测量和评价  

Measurement and Evaluation of Combustion Cyclic Variation in a Gasoline Engine Using an Optical Fiber Combustion Sensor

作　　者：薛敏霞[1] 杨涛[2] 程勇[2] 盛凯夫[1] 王建昕[2] 

机构地区：[1]华中科技大学汽车工程系 [2]清华大学汽车安全与节能国家重点实验室

出　　处：《传感器世界》2002年第2期16-20,共5页Sensor World

摘　　要：研制了一种光纤燃烧传感系统,用以测量汽油机燃烧火焰光谱。试验中测量了CH(431nm)、C2(516nm)及H2O(588nm)三种特征谱线在不同工况下的光强变化曲线。并提出了一种新的评价燃烧循环变动的方法,即用光变化曲线的特征参数来评价。试验结果表明,光强变化曲线能够反映燃烧过程进行的好坏及燃烧的时间特性,可以用来进行燃烧循环变动的评价。An optical fiber combustion sensing system is introduced here, which can be used in measuring the combustion emission spectra in gasoline engines. In this experiment, the curves of luminous intensity variations of three characteristic spectra CH(431nm)、C2(516nm) and H2O(588nm) under different operational conditions are measured. One new evaluation method of combustion cyclic variation is proposed. The results show that the obtained curves reveal the actual goodness of combustion process, and the time characteristics of combustion can be displayed on these curves. So the curves can be used to evaluate the cyclic variation of combustion.

关 键 词：燃烧循环 光谱 燃烧分析 光纤传感器 汽油机 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]