基于国四排放标准的非道路柴油机燃烧系统多参数优化匹配研究  

Multi-parameter Optimization and Matching Study of Combustion System of Non-Road Diesel Engine Based on National IV Standard

作　　者：黄盛杰 郑巍 何瑞银[2] 窦祥林[2] 冯海辰 唐静 张晏源 廖汉平 Huang Shengjie;Zheng Wei;He Ruiyin;Dou Xianglin;Feng Haichen;Tang Jing;Zhang Yanyuan;Liao Hanping(Jiangsu Agricultural Machinery Testing Station,Nanjing City,Jiangsu Province 210017,China;Nanjing Agricultural University,Nanjing City,Jiangsu Province 210095,China;Yancheng Agricultural Machinery Testing Station,Yancheng City,Jiangsu Privince 224051,China;Jiangsu Changfa Agricultural Equipment Co.,Changzhou City,Jiangsu Province 213000,China;Jiangsu Yanhai Agricultural Machinery Inspection Company,Yancheng City,Jiangsu Province 224007,China)

机构地区：[1]江苏省农业机械试验鉴定站,江苏省南京市210017 [2]南京农业大学,江苏省南京市210095 [3]盐城市农业机械试验鉴定站,江苏省盐城市224051 [4]江苏常发农业装备股份有限公司,江苏省常州市213002 [5]江苏沿海农业机械检测公司,江苏省盐城市224007

出　　处：《农业装备与车辆工程》2022年第11期44-48,共5页Agricultural Equipment & Vehicle Engineering

基　　金：江苏省农业农村厅2022年江苏省现代农机装备与技术示范推广项目“基于农机‘国四’排放标准的智能化农机检测装备与信息化分析软件系统的应用与研发”(NJ2022-06)。

摘　　要：以非道路国四高压共轨柴油机为研究对象,通过数值模拟结合正交设计法,研究了燃烧室缩口比、燃烧室径深比、进气涡流比、燃油喷雾锥角、油嘴伸出高度等5个对Soot响应的影响规律。利用极差分析法得出最佳参数组合,并对优化前后结果进行对比分析。结论表明,各因素对Soot影响的主次顺序,由大至小依次为喷雾锥角>缩口比>涡流比>径深比>伸出高度。通过优化喷雾锥角、油嘴伸出高度以及燃烧室结构参数后得出最终的优化方案。最终优化方案比原机方案的Soot排放降低了46.7%。Taking a non-road diesel engine as the study object,the optimal combination of combustion system parameters was obtained by using orthogonal design method,and the results show that the primary and secondary order of the impact of various factor on soot emission is that spray cone angle>re-entrant ratio>swirl ratio>diameter of depth>nozzle protrusions.Compared to the original machine,the soot emission of the small center-crown before and after optimization were decreased by 46.7%.

关 键 词：国四排放标准 非道路柴油机 燃烧系统 多参数优化匹配 正交设计 SOOT 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]