喷孔几何特征尺寸对柴油喷雾及柴油机性能影响的研究进展  

Research Progress for Influence of Nozzle Geometry on Spray Beam and Diesel Engine Performance

作　　者：张乐超[1] 齐放[1] 翁文祥 李伟权 许沧粟[1] 

机构地区：[1]浙江大学动力机械及车辆工程研究所,浙江杭州310027 [2]浙江省质量技术监督检测研究院,浙江杭州310012

出　　处：《车用发动机》2010年第3期1-7,共7页Vehicle Engine

基　　金：国家自然科学基金项目(50976100)

摘　　要：概述了国内外关于喷孔几何特征尺寸对柴油喷雾雾束及柴油机性能影响的研究现状,着重阐述了喷嘴类型对喷雾贯穿距离的影响,以及喷孔锥度、入口圆弧、喷孔直径、孔壁粗糙度等特征尺寸对柴油喷雾锥角、空穴的产生、出口流速及柴油机缸内的燃烧特性、燃油经济性、排放特性等的影响,介绍了制模法、力传感器测量法、X射线相衬成像技术这三种新颖、可行的测量喷孔几何特征尺寸的方法。The research status about the influence of nozzle geometry on spray beam and engine performance was introduced. The impact of nozzle type on spray penetration and the influence of nozzle taper, entry arc, nozzle diameter and wall roughness on spray angle, cavitation generation, axial velocity, in-cylinder combustion characteristic, fuel economy and emission perform- ance were emphatically discussed. Also, the feasible measurement methods of modeling method, force sensor measurement and X-ray phase contrast imaging for nozzle geometry were introduced.

关 键 词：柴油机 喷孔 几何特征 喷雾 液力研磨 锥度 

分 类 号：TK414.2[动力工程及工程热物理—动力机械及工程]