What is the function of the fuel injector?
2 Answers
The function of the fuel injector is: 1. To facilitate full combustion; 2. To supply fuel to the engine. The working principle of the fuel injector is: When the electromagnetic coil is energized, it generates suction, lifting the needle valve and opening 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. Common faults and solutions for fuel injectors: 1. Clogged injection hole: Use chromium oxide on a flat plate for grinding; if the needle valve's cylindrical surface is severely worn, replace it promptly. 2. Poor sealing: Apply chromium oxide or toothpaste to the sealing band at the needle valve end. 3. Piston wear: Replace the piston. 4. Poor fuel supply: Inspect and repair the fuel pump.
As someone who has been repairing my own car for a long time, I have a deep understanding of the role of fuel injectors. They perform a crucial task inside the engine: precisely injecting fuel into the cylinders at high pressure. This electronic control system is commanded by the ECU, which adjusts the injection volume based on engine speed and load to ensure an even mixture of air and fuel for more complete combustion. If the fuel injectors are functioning properly, the car starts smoothly and accelerates steadily. However, if they become clogged or worn, the engine may shake, fuel consumption may increase, or there may even be difficulty starting. I’ve encountered the latter issue before, and cleaning them restored performance. I also make sure to use high-quality fuel and perform regular maintenance on the fuel injectors, which helps extend their lifespan, prevents excessive emissions, and keeps the entire engine system running efficiently. This component is indispensable for everyday driving.
