内燃机工程2025，Vol.46Issue(1)：1-8,8.DOI:10.13949/j.cnki.nrjgc.2025.01.001
氨柴当量比燃烧的发动机性能研究
Study on Performance of an Ammonia-Diesel Engine Under Stoichiometric Combustion
摘要
Abstract
By employing a dual-fuel combustion system utilizing zero-carbon ammonia and diesel,the combustion and emission characteristics of ammonia-diesel dual-fuel engine were investigated under various stoichiometric ratios.The characteristics of the condition of stoichiometric and lean burn combustion were compared.The results indicate that under the stoichiometric ratio conditions,the combustion speed of ammonia-diesel dual-fuel is faster than that of pure diesel,with significantly shorter combustion duration.Compared with non-stoichiometric conditions,when the excess air coefficient is closer to the stoichiometric ratio and the ammonia energy replacement rate is larger,the combustion duration is shortened more obviously.Additionally,the ammonia-diesel dual-fuel combustion enhances engine power density and exhibits higher indicated thermal efficiency compared to pure diesel mode.Regarding emissions,NOx emissions from ammonia-diesel blended fuel are below 3.4 g/(kW·h),with emissions under low ammonia energy substitution rate being lower than pure diesel mode.However,the overall efficiency of ammonia combustion is lower,necessitating control of unburned ammonia emissions.Compared to pure diesel,condensed particulate matter emissions from ammonia-diesel blended fuel can be reduced by over 97%at an ammonia energy substitution rate of 70%.关键词
氨柴双燃料/当量比燃烧/排放/发动机Key words
ammonia-diesel dual-fuel/stoichiometric combustion/emission/engine分类
能源与动力引用本文复制引用
陈清楚,刘奕,毛建树,齐运亮,陈虎,王志..氨柴当量比燃烧的发动机性能研究[J].内燃机工程,2025,46(1):1-8,8.基金项目
国家自然科学基金面上项目(52076118) （52076118）
宁波市重大科技任务攻关项目(2022Z151) （2022Z151）
清华大学水木学者计划项目National Natural Science Foundation of China(52076118) （52076118）
Ningbo Major Research and Development Plan Project(2022Z151) （2022Z151）
Shuimu Tsinghua Scholar Project （）
