喷油器参数对船用低速机燃烧特性影响的仿真研究  

Simulation Research on Effects of Fuel Injector Parameters on Combustion of Marine Low Speed Diesel Engine

作　　者：李钦奉[1] 丁飞[1] 刘博 王筱蓉[1] 

机构地区：[1]江苏科技大学机械工程学院,江苏镇江212003 [2]中船动力研究院有限公司,上海200129

出　　处：《船舶工程》2015年第5期27-30,105,共5页Ship Engineering

基　　金：2012年高新技术船舶科研计划资助项目

摘　　要：对某船用低速二冲程柴油机在不同喷油器参数下的喷油及燃烧过程进行了三维CFD性能仿真分析。结果表明,随着喷油器喷孔个数增多,燃油蒸发雾化质量更好,进而对燃烧过程和排放物生成产生明显影响;同样,随着喷油器喷孔夹角减小,燃油蒸汽分布的区域更靠近缸盖,进而对燃烧过程和排放物生成产生明显影响。研究能够为喷油器参数优化,燃油喷射系统改进提供参考。On one marine low speed two-stroke diesel engine with different fuel injector parameters, the simulation analysis of 3-dimensional CFD of the fuel injection and combustion process is performed. The results show that, as the injector nozzle number increases, the fuel evaporation atomization quality is better, which has the obvious impact on the combustion process and emissions generated. And as the nozzle angle decreases, the distribution area of fuel vapor is closer to cylinder head, which has obvious effect on the combustion process and emissions generated. The study can provide references for fuel injector parameters optimization and fuel injection system improvement.

关 键 词：船用低速机 喷油器 燃烧 排放 

分 类 号：U664.121[交通运输工程—船舶及航道工程] TK413.8[交通运输工程—船舶与海洋工程]