Injector Ass’y

The main function of excavator engine fuel injectors is to inject fuel into the cylinder, enabling the engine to function properly. The fuel injector ensures the efficient operation and stability of the engine by precisely controlling the amount and timing of fuel injection, ensuring full combustion of the fuel.
The working principle of the fuel injector is to generate suction force through the electromagnetic coil, which causes the needle valve to be sucked up and opens the injection hole. The fuel is sprayed out at high speed through the annular gap between the shaft needle of the needle valve head and the injection hole, forming a mist. This design enables very precise control of fuel supply, maintaining the correct air-fuel ratio regardless of the engine’s state, ensuring smooth engine operation and compliance with environmental regulations.
If the fuel injector malfunctions, such as blockage or damage, it can cause abnormal engine operation, manifested as decreased power, increased fuel consumption, and worsening emissions. Therefore, regular inspection and maintenance of fuel injectors are crucial for maintaining the performance of excavators and extending their service life.