摘要
为了保证发动机在具有良好燃烧特性的同时,排放符合相应法规,可以采用复合喷射技术。本文将复合喷射模式分别与进气道喷射模式和缸内直喷模式进行比较,观察发动机的动力表现、废气排放表现和循环工作时的燃油经济性表现。结果显示,改变点火提前角时,复合喷射模式输出功率始终高于进气道喷射模式,碳氢化合物排放则更低;与缸内直喷模式相比,复合喷射模式工作时平均指示压力处于更高值,有良好的动力性能,同时燃料燃烧更加完全,具有更好的经济性。
In order to ensure that the engine has good combustion characteristics at the same time,emissions meet the corresponding regulations,the composite injection technology can be used.In this paper,the combined injection mode was compared with the inlet injection mode and the in cylinder direct injection mode respectively to observe the engine power performance,exhaust emission performance and fuel economy performance during the cycle opera⁃tion.The results show that when the ignition advance angle was changed,the output power of the composite injection mode was always higher than that of the inlet injection mode,and the HC emission was lower;compared with GDI mode,the IMEP of the composite injection mode was higher,which had good dynamic performance,and the fuel com⁃bustion was more complete,which had better economy.
作者
吕飞跃
贺子祺
陈浩
吴晨昊
LYU Feiyue;HE Ziqi;CHEN Hao;WU Chenhao(School of Transportation,Northeast Forestry University,Harbin Heilongjiang 150040)
出处
《河南科技》
2021年第5期60-62,共3页
Henan Science and Technology
关键词
复合喷射
分层混合气
燃烧特性
碳氢化合物排放
compound injection
stratified mixed gas
combustion characteristics
HC emissions
