What is the purpose of a fuel injector?

[StMalia]

The purpose of a fuel injector is to precisely deliver fuel into the engine for combustion. The fuel injector itself is a normally closed valve. When the electromagnetic coil is energized, it generates suction force, lifting the needle valve to open the injection hole. Fuel is then sprayed at high speed through the annular gap between the needle valve head and the injection hole, forming a mist that facilitates complete combustion. As one of the key components of an electronically controlled fuel injection engine, the performance of the fuel injector significantly impacts the engine's overall efficiency. A clogged fuel injector can severely affect vehicle performance, with blockages typically caused by carbon deposits accumulating on the injector or impurities in the fuel obstructing the injector's passage.