本文概括地介绍了为改善CR2柴油机的性能,应用激光全息技术对柴油机的喷雾特性(雾场中不同直径范围油滴的频谱分布、空间分布、时间分布、喷注的贯穿度及锥角)进行了初步试验研究。试验采用了不同喷孔长径比与不同压力室参数的长型多孔式喷油嘴,经与柴油机匹配,获得了比较满意的整机性能指标;为合理选择与进气系统、燃烧室的几何形状达到良好匹配的喷油嘴结构参数及喷孔布置提供了依据。 This paper presents an overview of the spray characteristics of diesel engine (spectral distribution, spatial distribution, time distribution, injection penetration and cone angle) of diesel engine with laser holography in order to improve the performance of CR2 diesel engine A preliminary experimental study. The experiment adopted long-length porous injector with different orifice length-diameter ratio and different pressure chamber parameters, and matched with diesel engine to obtain the satisfactory performance index of the whole machine. In order to reasonably choose the geometry of the intake system, combustion chamber The shape of the nozzle to achieve a good match to the structural parameters and nozzle layout provided the basis.