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Q:How the fuel injection nozzle controls the fuel injection quantity?

2023-08-01

A:How the fuel injection nozzle controls the fuel injection quantity:
For the same type of EFI vehicle, the pressure of the fuel pump is constant. Regardless of the throttle opening, the pressure of the fuel injector is always constant as long as it is regulated by the fuel pressure regulator.
The fuel injection nozzle is used in strict matching with the fuel pump and fuel pressure regulator. Only the designed pressure can the fuel injection nozzle achieve the best atomization effect. The pressure is lower than the design pressure, and the spray oil is not foggy, columnar, and should not be mixed with air;
If the pressure is too high, the injected oil is conical and should not be mixed, and the injection force is too large, so a lot of fuel is directly sprayed on the pipe wall, which directly affects the mixing ratio parameters.