缸内直喷(Gasoline Direct Injection,简称GDI)式汽油机,又因为燃油是分层燃烧(Fuel Stratified Injection),故又称为FSI系统。传统的电喷汽油机,是将汽油喷射在进气门外侧的进气歧管中,在进气过程和压缩过程中,利用时间和空间的均质混合方式,完成可燃混合气的形成,再点火燃烧作功。这 Gasoline Direct Injection (GDI) gasoline engines, and because the fuel is stratified combustion (Fuel Stratified Injection), it is also known as the FSI system. The traditional EFI gasoline engine injects gasoline into the intake manifold outside the intake valve. During the intake process and the compression process, the homogeneous mixture of time and space is utilized to complete the formation of the flammable gas mixture and then ignite Combustion work. This