Simulation of the spray atomization characteristics of diesel oil in hydrogen/diesel engine

被引：0
|
作者：
Song Y. [1 ]
Ning Z. [1 ]
Jiang D. [1 ,2 ]
Yao G. [2 ]
Zi X. [2 ]
机构：
[1] School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University
[2] Department of Automobile Engineering, College of Military Transportation
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2010年 / 46卷 / 24期
关键词：
Diesel oil; Hydrogen; Hydrogen/diesel engine; Simulation; Spray atomization;
D O I：
10.3901/JME.2010.24.123
中图分类号：
学科分类号：
摘要：
In hydrogen/diesel engine, pre-mixture of hydrogen and air is ignited by diesel oil for the purpose of quasi-homogeneous and low-temperature combustion. The spray atomization of diesel oil in the hydrogen/air environment will influence the distribution of diesel vapor in the cylinder and the combustion progress of the internal combustion engine, and determine the degree of quasi-homogeneous combustion. The spray atomization is the key point to the low-temperature combustion of engine. The spray atomization characteristics of diesel oil in the hydrogen/air environment are studied by using the KIVA-3V code. The research results show that hydrogen in the air can promote the atomization of the diesel oil spray, increase the mass of diesel vapor at the end of oil injection, influence the deflection and the penetration distance of the spray, can reduce the collision intension of the spray particles against the cylinder wall to some extent and facilitate the well-proportioned oil vapor distribution in the cylinder. But the collision probability of the spray particle against the cylinder wall will increase when the hydrogen concentration in the air exceeds a certain limit. © 2010 Journal of Mechanical Engineering.
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页码：123 / 130
页数：7
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