滕勤;张赟赟;张健;
1:合肥工业大学机械与汽车工程学院
2:安徽江淮汽车股份有限公司技术中心
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。
关键词： 直喷;增压;可变气门正时;扫气
Abstract: 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 influences on engine performance were analyzed,including engine
output torque,fuel economy,emissions and the engine control strategy. The
applicable prospect was discussed in this paper.
Keywords: Direct
Injection;;Turbocharged;;VVT;;Scavenging
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