利用计算流体力学（CFD）软件AVL-FIRE对柴油机缸内燃烧过程进行三维数值模拟。研究不同喷油策略对乳化油燃烧放热率、缸内温度、压力、NO、碳烟等燃烧性能的影响。研究表明缸内压力随着喷油提前角减小而降低，喷油提前角为15°相对于5°时降低24%；在喷油提前角为10°时碳烟生成量达到最大值，随着提前角的增大或减小碳烟生成量都会下降；NO生成量随着喷油提前角的减小而降低，降低效果明显；主机指示功率随着喷油提前角的减小而降低，降低幅度较小。
Three-dimensional numerical simulation of in-cylinder combustion process of diesel engine was carried out by using computational fluid dynamics (CFD) software AVL-FIRE. The effects of different injection strategies on combustion heat release rate, in-cylinder temperature, pressure, NO and soot of emulsified oil were studied. The results show that: the cylinder pressure decreases with the decrease of injection advance angle, and the injection advance angle of 15 ° is 24% lower than that of 5℃, the soot generation reaches the maximum when the injection advance angle is 10° and decreases with the increase or decrease of injection advance angle, the no generation decreases with the decrease of injection advance angle, and the reduction effect is obvious, the engine indicated power increases with the increase of injection advance angle, the angle decreases with the decrease of the angle.
2022,44(11): 100-104 收稿日期：2021-02-23
DOI：10.3404/j.issn.1672-7649.2022.11.021
分类号：U664.121
基金项目：陆军装备部研究课题资助项目（172183）
作者简介：王军(1979-)，男，副教授，主要从事内燃机性能优化及排放研究
参考文献：
[1] HAGOS F Y, AZIZ AR A, TAN I M. Water-in-diesel emulsion and its micro-explosion phenomenon-review [C]//Communication Software and Networks (ICCSN), 201 1IEEE 3rd International Conference on. IEEE, 2011: 314-318.
[2] BASHA J S, ANAND R B. An experimental study in a CI engine using nanoadditiveblended water- -diesel emulsion fuel[J]. International Journal of Green Energy, 2011, 8(3): 332–348
[3] 李向辉, 王忠俊, 陈恩博. 2135G船用柴油机燃用掺水乳化油实验分析[J]. 船海工程, 2016, 45(4): 126–130
[4] 魏成龙, 阻热抑爆柴油性能评定研究[D]. 南京: 南京理工大学, 2014: 57-76.
[5] ANNA L, KRISTER H. Water-in-diesel emulsions and related systems[J]. Advances in Colloid and Interface Science, 2006(123): ;231–239
[6] ANNA L, MALENA S, MAGNUS N, et al Fuel emulsions and microemulsions based on Fischer-Tropsch diesel[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2010, 354: 91-98.
[7] 周海杰. 微乳化柴油的制备及其发动机负荷特性研究[D]. 海口： 海南大学, 2017.
[8] 曾向明, 朱亚明. 乳化柴油经济性与排放特性研究部[J]. 船舶工程, 2017(1): 15–19
