一种新型空燃比检测方法的初步研究  

Study on a New Method of the Air/Fuel Ratio Detection

作　　者：吴怡[1] 吴筱敏[2] 

机构地区：[1]西华大学交通与汽车工程学院,四川成都610039 [2]西安交通大学能源与动力工程学院

出　　处：《小型内燃机与摩托车》2007年第3期5-7,共3页Small Internal Combustion Engine and Motorcycle

基　　金：国家自然科学基金资助项目(50276049)

摘　　要：用离子电流法在一种新型直管道燃烧器中,对预混天然气空气混合气进行燃烧基础特性的测试。通过控制预混压力和空燃比两个参数变化,消除了由于发动机循环变动对燃烧状态和离子电流强度的不稳定影响。分析了空燃比、预混压力变化与离子电流信号的关系,试验研究表明离子电流法可用来检测空燃比,为在发动机上的应用提供了基础性研究。The basic combustion characteristics of mixture including natural gas and air are studied by measuring ionic current in a straight conduit combustion bomb, which can control the change of premixed pressure and A/F ratio for avoiding the unstable state of combustion and ionic current resulted from the cyclic variation in engine experiment. This experiment studies the relation of ionic current signals and A/F ratio on different premixed pressure. The results show the ionic current signals can be used to detect the A/F ratio, which provide the basis investigation for the application of ionic current in engine.

关 键 词：离子电流法 空燃比 天然气 检测 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]