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| 缸内直喷汽油机旋流喷射喷雾特性影响因素的分析研究 | |
| 引用本文： | 王艳华,李云清,李波,李天蕾.缸内直喷汽油机旋流喷射喷雾特性影响因素的分析研究[J].农机化研究,2011,33(11). |
| 作者姓名： | 王艳华 李云清 李波 李天蕾 |
| 作者单位： | 1. 北京航空航天大学交通科学与工程学院,北京100191;中北大学机电工程学院,太原030051 2. 北京航空航天大学交通科学与工程学院,北京,100191 3. 中国汽车技术研究中心,天津,300162 4. 国家专利局实用新型审查部,北京,100191 |
| 基金项目： | 国家自然科学基金项目(50376003) |
| 摘 要： | 为了研究影响缸内直喷汽油机高压旋流喷嘴喷雾特性的因素,对高压旋流喷射初始阶段运动进行了理论分析研究,确定了影响初始喷雾旋流体运动的无量纲参数。通过试验改变空心旋流体内外压差、初始旋流强度、旋流体油膜厚度,发现喷雾特性呈不同的变化趋势。随着旋流体内外压力差的增大,喷雾锥角明显减小而贯穿度变化不大;旋流强度增加,喷雾贯穿距离明显增加,而喷雾锥角变化不大;增加旋流体初始厚度,可以使喷雾在自由空间中外形尺寸增加。 |
| 关 键 词： | 高压旋流喷射 无量纲参数 压力差 旋流强度 油膜厚度 |
Analyze and Research Affecting Factors of Spray Characteristics from High-pressure Swirl Nozzle on Gasoline Direct Injection Engine |
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| Wang Yanhua,Li Yunqing,Li Bo,Li Tianlei.Analyze and Research Affecting Factors of Spray Characteristics from High-pressure Swirl Nozzle on Gasoline Direct Injection Engine[J].Journal of Agricultural Mechanization Research,2011,33(11). | |
| Authors: | Wang Yanhua Li Yunqing Li Bo Li Tianlei |
| Institution: | Wang Yanhua1,2,Li Yunqing1,Li Bo3,Li Tianlei4(1.Academy of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China,2.College of Eectromechanica Engineering,Zhongbei University,Taiyuan 030051,3.China Automotive Technology & Research Centre,Tianjin 300162,4.National Patent Office Utility Model Examination Department,China) |
| Abstract: | To study affecting factors of spay characteristics from high-pressure swirl nozzle on gasoline direct injection engine,the initial stage of the swirl motion is theoretically researched.The dimensionless parameters affecting spray characteristics have be found.Through the experiments,variable pressure difference between outer and inner surface of the swirl jet,vortex strength and fuel film thickness can result in different spray characteristics.Increasing pressure difference between outer and inner surface o... |
| Keywords: | high-pressure swirl injection dimensionless parameters pressure difference vortex strength fuel film thickness |
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