It is an electromagnetic type injection nozzle which injects fuel in the throttle body according to the signal from the ECM.
When the solenoid coil of the injector is energized by the ECM, it becomes an electromagnet and attracts the plunger. At the same time, the needle valve incorporated with the plunger opens and the injector which is under the fuel pressure injects fuel in conic dispersion. As the lift stroke of the needle valve of the injector is set constant, the volume of the fuel injected at one time is determined by the length of time during which the solenoid coil is energized (injection time).
![](https://motoinstruction.ru/img/suzuki/14/120335.jpg)
1. Needle valve; 2. Plunger; 3. Solenoid coil; 4. Filter