针对国内对柴油机喷油雾化的试验研究较少的现状，通过分析国外的试验设备、方法和研究成果，明确燃油系统喷雾试验设备和方法，为建设船用柴油机喷雾试验装置、助推自主品牌燃油系统和零部件设计开发做好技术铺垫和支撑。通过分析得知，对喷油雾化质量的影响因素为喷射压力、缸内温度、缸内压力、喷孔直径、喷油量，具体影响是喷射压力对最大液相贯穿距没有明显影响，仅影响到达最大贯穿距的时刻；缸内温度增加使液相贯穿距和喷雾锥角都会减小；缸内压力增加会使最大液相贯穿距减小；喷孔直径减小会使液相贯穿速度和距离都减小；在未达到最大液相贯穿距时，喷油量增加，液相贯穿距增加，但液相贯穿速率没有改变。
For the status quo that domestic research on diesel engine fuel injection spray test is fewer, through the analysis of foreign research for the experimental equipment, methods, and results, make sure spray test equipment and methods in fuel system, then supply technology groundwork and support for the construction of marine diesel spray test device, and boost own-brand fuel system and components design and development. Through analysis, the factors influencing the quality of oil atomization are injection pressure, the temperature in cylinder, cylinder pressure, nozzle hole diameter, and injection quantity. The specific influence is injection pressure has no apparent influence to the maximum liquid phase penetration distance, only affecting the moment to reach the maximum liquid phase penetration distance; With temperature in cylinder increased, the liquid phase penetration distance and the spray cone angle will be decreased; The cylinder pressure increased, the maximum liquid phase penetration distance decreased; Nozzle hole diameter decreased can make the liquid phase penetration speed and distance are also decrease; Before unreached the maximum liquid phase penetration distance, the liquid phase penetration distance increased while fuel injection quantity increases, but the liquid phase penetration rate does not changed.
2018,40(11): 98-103 收稿日期：2018-01-15
DOI：10.3404/j.issn.1672-7649.2018.11.019
分类号：U664.121
基金项目：工信部高技术船舶科研计划资助项目（CDGC01）
作者简介：戎志祥(1984-),男,硕士,工程师,主要从事船用柴油机燃油系统设计开发及试验研究
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