摘要
阐述了增压直喷(TGDI)汽油机中扫气现象发生的必要条件和发动机基本配置对扫气的影响,讨论了低速全负荷工况下的扫气原理,分析了扫气功能对发动机性能的影响。针对提高废气涡轮增压器快速响应性的问题,提出了扫气模式下发动机控制策略的基本构想。
Based on the essential condition of scavenging in the turbocharged direct injection gasoline engine, the effect of engine running parameters and the basic configuration to scavenging, and the principle of the scavenging function at the low speed under full load condition , the influ- ences on engine performance were analyzed, including engine output torque, fuel economy, emis- sions and the engine control strategy. The applicable prospect was discussed in this paper.
出处
《内燃机与动力装置》
2014年第2期5-9,共5页
Internal Combustion Engine & Powerplant
关键词
直喷
增压
可变气门正时
扫气
Direct Injection
Turbocharged
VVT
Scavenging
