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电子燃油喷射系统(EFI)根据汽油发动机的各个不同工况要求来获取适当的油量,以实现最佳的实际空燃比系数,以期获得较好的动力性、燃油经济性,同时减少有害气体的排放,从而进一步减少汽车尾气对环境的污染。本文针对于缸内直喷技术(FSI)与缸外喷射技术(FSO)的优点集于一体的混合喷射系统来进行论述,描述了它的特点、运用及发展趋势等几个方面,并与进气道喷射技术(MFI)、缸内喷射技术(FSI)进行了比较。文章重点以大众第三代EA888发动机为例进行了分析:混合喷射系统在动力性、经济性和尾气排放上优益于缸外、缸内喷射系统。
Electronic fuel injection system (EFI) according to the different requirements of gasoline engine to obtain the appropriate amount of oil, in order to achieve the best real air-fuel ratio coefficient, in order to obtain better power, fuel economy, while reducing harmful gases Emissions, thereby further reducing the vehicle exhaust on the environment pollution. In this paper, we discuss the hybrid injection system with the advantages of FSI and FSO and describe its characteristics, application and development trends, Airway Jetting Technology (MFI), In-Cylinder Jetting Technology (FSI) were compared. The article focuses on the third generation of EA888 Volkswagen engine as an example for analysis: hybrid injection system in the power, economy and exhaust emissions benefits from the cylinder, in-cylinder injection system.