气体燃料对内燃机充气效率的影响  

Impact of Gas Fuel on the Volumetric Efficiency in Internal Combustion Engines

作　　者：郑亮[1] 李格升[1] 董健[1] 

机构地区：[1]武汉理工大学能源与动力工程学院,湖北武汉430063

出　　处：《内燃机》2011年第4期51-53,56,共4页Internal Combustion Engines

基　　金：湖北省自然科学基金重点项目(2009CDA029);中央高校基本科研业务费专项资金资助

摘　　要：气体燃料作为能源替代应用于内燃机时,会因其组分、温度的原因对内燃机充气效率产生影响。讨论了四种气体燃料对内燃机充气效率的影响,并基于一些基本假设,从理论上计算了影响的程度。结果表明,LPG燃料对充气效率的影响较小,氢气较大;气体燃料掺燃量越大,对充气效率的影响越大;过量空气系数大的内燃机所受到的影响较小。研究的四种气体燃料因温度对充气效率无影响或影响较小。As alternative fuels,gaseous fuels will have an impact on volumetric efficiency when they were used in the internal combustion engines,because of their composition and temperature.This paper discusses the impact of four types of gaseous fuels on the volumetric efficiency in internal combustion engines,and based on some basic assumptions,calculates the degree of impact in theory.The results showed that the impact of LPG on the volumetric efficiency smaller and hydrogen larger;The impact on the volumetric efficiency larger with gas mixed with fuel increases;The impact on the volumetric efficiency smaller with the excess air ratio of the internal combustion engines larger;The temperature of four types of gaseous which research in this paper,makes no or less impact on the volumetric efficiency.

关 键 词：充气效率 气体燃料 内燃机 

分 类 号：TK431[动力工程及工程热物理—动力机械及工程]