氢发动机低温燃烧特性的研究  

A Study on Low-temperature Combustion Characteristics in Hydrogen Engine

作　　者：秦朝举[1,2] 杨振中[1] 张卫正[2] 宋立业[2] 原彦鹏[2] 

机构地区：[1]华北水利水电大学机械学院,郑州450045 [2]北京理工大学机械与车辆学院,北京100081

出　　处：《汽车工程》2017年第2期133-137,共5页Automotive Engineering

基　　金：国家自然科学基金(51076046);河南省高等学校重点科研项目(15A470017);河南省科技攻关项目(172102210052)资助

摘　　要：为有效抑制氢发动机的早燃和工作粗暴,在氢发动机中尝试应用低温燃烧技术,建立了低温燃烧预测模型,分析了氢发动机低温燃烧特征和实现机理。结果表明:通过增加缸内充量中大比热成分和降低其氧浓度来实现的低温燃烧技术可有效控制氢发动机燃烧反应速度,抑制早燃和工作粗暴,并减小NO生成物;随着EGR率的增加,燃烧反应变慢,燃烧持续期延长,燃烧放热呈现"缓而长"的特点。For effectively suppressing the pre-ignition and harsh combustion in hydrogen engine, the appli-cation of low temperature combustion technique to hydrogen engine is attempted. The prediction model for low-tem-perature combustion is established and the characteristics and implementing mechanism of low-temperature combus-tion in hydrogen engine are analyzed. The results indicate that low-temperature combustion, which is achieved by in-creasing high specific-heat components and reducing oxygen concentration of in-cylinder charge, can effectively con-trol the combustion reaction velocity, suppress the pre-ignition and harsh combustion and reduce NO pollutant in hy-drogen engine. With the rise of EGR rate, combustion reaction slows down, combustion duration extends and heat release shows a feature of ＂slow and lengthy＂.

关 键 词：氢发动机 低温燃烧 废气再循环 燃烧反应 

分 类 号：U464.178[机械工程—车辆工程]