燃油喷嘴的加工质量对射流影响的仿真  

Simulation Study on the Impactof Processing Quality of the Fuel Nozzle on Jet

作　　者：赵朝夕 ZHAO Zhaoxi(Guangzhou Panyu Polytechnic,Guangzhou 5114832,China)

机构地区：[1]广州番禺职业技术学院,广州511483

出　　处：《机械设计与研究》2022年第2期150-154,共5页Machine Design And Research

基　　金：广东省教育厅青年创新人才类项目(2021KQNCX199);广州番禺职业技术学院校级科研项目(2021KJ23);广州番禺职业技术学院教育教学改革项目(2021JG42)。

摘　　要：在燃油喷嘴加工中,采用不同的加工方法,喷嘴内流道的表面形貌也就不同。目前,微细钻削加工是加工直流燃油喷嘴的主要加工方法。基于仿真模拟和实验手段,探讨了微细钻削加工方法得到的喷嘴流道表面粗糙程度对喷嘴喷射性能的影响,主要分析了单个射流的喷雾形状和流量。钻削加工出不同内表面粗糙度的喷嘴,搭建了射流实验台,研究了入口压力、喷嘴内壁粗糙度与射流流量和喷射形状的关系,为喷嘴加工精度的研究奠定理论基础。实际加工中应采用合理的加工参数,保证小孔加工精度和形貌,从而得到质量优良的发动机直流式燃油喷嘴。For fuel nozzle processing,different machining methods lead to different surface morphology in the nozzle.At present,micro drilling is the main processing method of direct fuel nozzle.In this paper,the influence of surface roughness of the nozzle channel on spray performance is studied qualitatively and quantitatively through simulation and experiment.The spray shape and jet flow rate of a single jet are analyzed.Nozzles with different inner surface roughness are drilled,and a jet experiment platform is built.Furthermore,the relation between the inlet pressure,nozzle inner wall roughness and jet flow and shape is studied,which lays a theoretical foundation for study of nozzle machining accuracy.Reasonable processing parameters should be adopted in processing to ensure machining accuracy and morphology of the small nozzle,so as to obtain high-quality engine direct fuel nozzle.

关 键 词：直流式燃油喷嘴 流道表面加工质量 射流 仿真研究 

分 类 号：TS054[轻工技术与工程]