What Does The Fuel Injector Do?

The function of the engine fuel system is to supply a certain amount of clean, well-atomized gasoline to the engine according to the needs of the engine's operating conditions so that it can be mixed with a certain amount of air to form a combustible mixture. At the same time, the fuel system also needs to store a considerable amount of gasoline to ensure that the car has a considerable driving range. In this process, the fuel filter, fuel pump, fuel injector, and other components work together to realize the stroke of fuel and air mixture and provide a high-quality power source for the engine. In addition, the fuel injector system also includes auxiliary devices such as a gasoline tank, gasoline filter, fuel pump, oil and gas separator, oil pipe, and fuel gauge. This article mainly introduces the main functions of fuel injectors and their impact on vehicle operation.

What Does A Fuel Injector Do?

What Is A Fuel Injector?

A car's fuel filter, pump, and injectors are all interconnected and part of the under-the-hood system. Filters, pumps, and injectors work together to ensure your engine receives the correct mixture of fuel and air to power the engine.

The function of the injector is to inject fuel into the intake manifold or cylinder according to the injection timing and pulse width calculated by the engine ECU. The fuel injector is actually a solenoid valve, and the ECU controls the work of the fuel injector by controlling the current on and off of the solenoid valve coil. The fuel injector is an important part of maintaining the operation of the engine. It is composed of the fuel injector body, the fuel injector, the support, the spring, and so on. The high-pressure oil is pumped in from the oil supply port of the fuel injectors, and the high pressure generated in the injector acts on the cone surface of the fuel injector. It burns in the engine cylinder, making the piston reciprocate.

How Does Fuel Injector Work？

Fuel injectors work by delivering fuel into the engine's combustion chamber in a controlled and precise manner. The injectors are connected to the engine's fuel supply system, which provides a constant flow of pressurized fuel. During the engine's intake stroke, when the intake valve opens, air is drawn into the combustion chamber. At the same time, the injector sends a signal to release fuel. Fuel injectors spray pressurized fuel through tiny nozzles, breaking it down into a fine mist or vapor. This atomization process increases the surface area of the fuel, allowing it to mix more efficiently with the incoming air. When the spark plug ignites, the air-fuel mixture burns, creating power to drive the engine. The duration of fuel injection is precisely controlled by the engine's electronic control unit, ECU, based on various factors such as engine speed, load, and temperature. This ensures the right amount of fuel is provided under different driving conditions, allowing the engine to achieve optimal performance and efficiency.

Signs Of Bad Fuel Injectors

1. The lack of maintenance of the engine fuel system may cause colloid accumulation inside the injector, the valve hole is blocked or the needle valve is stuck.

2. The blockage of the injector valve hole will lead to failure of fuel injection or poor atomization of fuel injection. The stock needle valve will cause dripping after spraying, resulting in unstable idle speed, poor acceleration, or other failure phenomena of the engine, and will seriously affect the performance of the engine. emissions performance.

3. Water entering the fuel injector connector will cause a short circuit, resulting in failure to inject fuel, and care must be taken to clean it during maintenance.

4. The engine cannot be started, the engine is running unstable, and the exhaust is seriously black-smoked.

In conclusion, the fuel injector is a key component of the engine's fuel system and plays a key role in ensuring that the engine receives the correct mixture of fuel and air for efficient combustion. Regular maintenance of your entire fuel system will keep your engine running smoothly and prevent problems like poor acceleration, erratic idle, or increased emissions. Understanding what is a fuel injector, what does the fuel injector do, how do fuel injectors work, and identifying potential problems can help extend the service life of construction machinery.