Difference between four-hole and five-hole injector

The nozzle orifice determines the total flow of the nozzle, and their differences are as follows:

1, smoke and fuel consumption are different when injecting fuel.

The smoke density of five holes will be smaller than that of four holes, and the fuel consumption will also come down.

2. The applicable direct injection machines are different.

Direct injection machines generally use 1 120 with 5 holes above and 4 holes below. It is generally not good to change the four holes of small engine injector into five holes. The atomization of five holes will not be as good as that of four holes, but it has little effect on locomotives.

3. The shapes of the adaptive combustion chambers are different.

The number of spray holes is related to the form of combustion chamber. Quadrilateral combustion chambers generally use four-hole nozzles, while circular combustion chambers use more than five holes.