喷油器喷孔直径对船舶柴油机燃烧性能的影响  

Influence of Injector Orifice Diameter on Combustion Performance of Marine Diesel Engine

作　　者：廖建彬[1] 庄学强[2] 于洪亮[3] LIAO Jianbin;ZHUANG Xueqiang;YU Hongliang(School of Marine Engineering Institute,Jimei University,Xiamen 361021,Fujian,China;Key Laboratory of Naval Architecture and Ocean Engineering in Fujian Province,Jimei University,Xiamen 361021,Fujian,China;Engineering Research Center of Marine Detecting and Remanufacturing in Fujian Province,Jimei University,Xiamen 361021,Fujian,China)

机构地区：[1]集美大学轮机工程学院,福建厦门361021 [2]集美大学福建省船舶与海洋工程重点实验室,福建厦门361021 [3]集美大学船舶检测与再制造福建省高校工程研究中心,福建厦门361021

出　　处：《造船技术》2018年第2期31-35,共5页

基　　金：福建省科技创新平台建设项目(编号:2014H2001);福建省科技计划重点项目(编号:2015Y0038;2017H0027);厦门市科技计划项目(编号:3502Z20131151)

摘　　要：研究船舶柴油机喷油器的雾化特性对提高船舶柴油机热效率、减少燃油消耗率和有害物排放、预防机械故障有着重要的意义。以4190ZL型船用中速柴油机为例,利用CFD软件FIRE对其喷油器在不同喷孔直径下的喷射雾化和燃烧过程进行数值模拟,得到燃油雾化特性和燃烧过程的数据,并分析其对柴油机NOx和碳烟排放的影响。结果显示采用孔径为0.3 mm的喷油器,柴油机排放特性最佳,为船舶柴油机喷油器设计、故障诊断与选用提供参考。The study of the atomization characteristic of marine diesel engine injector is significant for the thermal efficiency improvement of the diesel engine,the reduction of the fuel consumption and the harmful emissions,and the mechanical failure prevention.The numerical simulation of the injection atomization and combustion process under different orifice diameters is carried out with the CFD software FIRE on 4190ZL type marine medium speed diesel engine.The fuel spray characteristics and the data in the combustion process are obtained.The orifice diameters influence on diesel engine NO x and soot emissions are analyzed.The results show that the diesel engine has the best emission characteristics by the injector with the orifice diameter of 0.3 mm,which provides reference for design,fault diagnosis and selection of marine diesel injectors.

关 键 词：船舶柴油机 喷油器 FIRE 雾化 仿真 

分 类 号：U664[交通运输工程—船舶及航道工程]