The injector is actually a simple solenoid valve. When the solenoid is energized, the suction is generated. The needle valve is sucked up, the nozzle is opened, and the fuel is ejected at a high speed through the annular gap between the needle of the needle head and the nozzle. It forms a mist, which is good for burning.
The injector itself is a normally closed valve. When the ECU issues an injection command, its voltage signal will cause current to flow through the coil in the injector, generating a magnetic field to suck the valve needle, allowing the valve to open so that the oil can self The fuel injection hole is ejected. The biggest advantage of jet fueling is that the fuel supply control is very precise, allowing the engine to have the correct air-fuel ratio in any state, not only keeping the engine running smoothly, but also complying with environmental regulations.