氢燃料发动机燃烧过程模拟与分析  

Simulation and Analysis of Hydrogen-fueled Engine Combustion

作　　者：杨振中[1] 师素娟[1] 郭楠[1] 王丽君[2] 裴普成[2] 

机构地区：[1]华北水利水电学院机械学院,河南郑州450011 [2]清华大学汽车安全与节能国家重点实验室

出　　处：《小型内燃机与摩托车》2009年第1期76-80,共5页Small Internal Combustion Engine and Motorcycle

基　　金：美国GM中国科学研究基金(国家自然科学基金50322262);清华大学汽车安全与节能国家重点实验室开放基金(KF2006-01);2006年河南省高等学校青年骨干教师资助计划(教高[2007]335号-88);郑州市科技攻关项目(郑科计[2007]8号-3-3)资助

摘　　要：在分析氢作为内燃机燃料特性的基础上,针对氢气与空气的混合与燃烧过程的空间分布特性比汽油均匀的特点,提出并建立了单区模型对氢燃料发动机燃烧过程进行模拟与分析。结果显示,缸内压力与放热率的计算值与试验值相对误差在3%以内,曲线形态吻合度较高。较好地反映出实际的燃烧情况。表明采用单区模型进行氢燃料发动机燃烧过程的模拟与分析能够保证较高的准确性,进一步分析了点火提前角、当量比对燃烧过程的影响,结果表明它们对燃烧过程有较大影响。因此,控制点火提前角、当量比是调整与改善氢发动机性能的重要手段。Aiming at the characteristic that the interspace distributing trait of hydrogen and air mix and combustion process is better than that of gasoline＇s, the single-zone combustion model is advanced and established to carry through the simulation and analysis of hydrogen-fueled engine combustion process, based on the analyzing of characteristic of hydrogen working as I. C. engine fuel. The result shows that, the calculation and testing value comparative error of both the pressure in the cylinder and the rate of heat release is within 3%, and the curve configuration inosculates quite well. This can reflect the actual combustion situation perfectly. It indicates that adopting single-zone combustion model to carry through the simulation and analysis of hydrogen-fueled engine combustion process can ensure upper veracity. Further more, the impact of ignition advanced angle and equivalence ratio on combustion process has also been analyzed. The result shows that they have great influence on combustion process. Therefore, the controlling of ignition advanced angle and equivalence ratio is a crucial artifice to adjust and improve hydrogen-fueled engine performance.

关 键 词：氢燃料发动机 单区模型 燃烧过程模拟 点火提前角 当量比 

分 类 号：TK463[动力工程及工程热物理—动力机械及工程]