喷油参数对甲醇/柴油双燃料发动机燃烧和排放的影响  

Influence of injection parameters on combustion and emissions of methanol/diesel dual fuel engine

作　　者：李志越 王忠[1] 李仁春[1] 张登攀[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《中国农机化学报》2015年第5期192-197,共6页Journal of Chinese Agricultural Mechanization

基　　金：国家自然科学基金项目(51376083);江苏省高校自然科学基金重点项目(10KJA470009);江苏省2012年度普通高校研究生科研创新计划项目(CXZZ12_0676);江苏大学高级专业人才科研启动基金项目(12JDG040);江苏省2013年度普通高校研究生科研创新计划项目(CXZZ13_0672)

摘　　要：为研究不同喷油定时和喷油压力对甲醇/柴油双燃料发动机缸内燃烧过程、NOX和Soot排放的影响。利用AVL FIRE软件对甲醇/柴油双燃料发动机缸内燃烧和排放进行数值模拟。结果表明,喷油定时提前,甲醇/柴油滞燃期延长,缸内最大爆发压力和放热率峰值显著升高,缸内最高温度上升,NOX排放增加,Soot排放降低。喷油压力增大,甲醇/柴油滞燃期缩短,缸内最大爆发压力和放热率峰值显著升高,缸内最高温度上升,NOX排放增加,Soot排放降低。In order to study the influences of injection timing and injection pressure on combustion process, NOx and Soot emissions of methanol/diesel dual fuel engine, the numerical simulation on combustion process and emission of methanol/diesel dual fuel engine was conducted by using AVL FIRE software. The ignition delay prolonged owing to the increase of injection timing, maximum cylinder pressure and the peak heat release rate obviously in- creased, maximum combustion temperature rose, NOx emission increased, meanwhile Soot emission decreased. With the decrease of injection pressure, the ignition delay was increased, maximum cylinder pressure and the peak heat release rate were both obviously reduced, maximum combustion temperature was lowered, and there was a reduction in NOx emission and a huge increase in Soot emission.

关 键 词：甲醇 喷油定时 喷油压力 燃烧 排放 

分 类 号：X382[环境科学与工程—环境工程]