The solenoid valve of the fuel injector is to realize the function of opening and closing of injection nozzle to control the injection process. The fuel injection nozzle is opened once solenoid receiving the signal, and the fuel supply is stopped when it is closed.
When the solenoid coil is energized, suction is generated. The needle valve is sucked up, opening the nozzle hole, and the fuel is ejected at high speed through the annular gap between the needle on the needle valve head and the nozzle hole. The formation of mist is conducive to full combustion.
Remark note: The brands and symbols shown in our photos & descriptions are used for identification only.
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