4125型发动机采用涡流室式燃烧室。而这种燃烧室其喷油方向对发动机的性能影响很大。要求喷油方向与涡流通道方向一致,就是要求喷油方向与燃烧室里空气涡流的方向一致,即使燃油顺着涡流方向喷射。右图是球形涡流室的喷油方向对发动机性能影响 4125 engine uses a vortex chamber combustion chamber. And this kind of combustion chamber its injection direction has a great influence on the performance of the engine. Requires that the direction of injection is in line with the direction of the vortex flow, which requires that the direction of injection matches the direction of the air vortex in the combustion chamber, even if the fuel is injected in the direction of the vortex flow. The right is the influence of the injection direction of the spherical vortex chamber on the engine performance