Working Principle Of Fuel System

The working principle of fuel system mainly includes the following steps:

Extraction and filtration of fuel: Fuel is extracted from the fuel tank through an electric fuel pump and filtered through a fuel filter to remove impurities and moisture to ensure the cleanliness of the fuel.

Delivery of fuel: The filtered fuel is delivered to the fuel rail through the fuel pipeline, and the fuel rail distributes the fuel to each injector. The injector sprays the fuel into the intake manifold, where it mixes with the air and enters the cylinder.

Pressure regulation of fuel: The fuel system is usually equipped with a pressure regulator, which keeps the fuel pressure at a constant value through a diaphragm valve, and the excess fuel flows back into the tank.

Injection of fuel: The injector sprays the fuel into the intake manifold, where it mixes with the air and enters the cylinder. The spark plug ignites at the right time, causing the oil-gas mixture to burn, pushing the piston to move, and thus driving the engine to operate.

‌Fuel system control‌: Modern fuel systems are usually controlled by an electronic control unit (ECU), which adjusts the fuel supply according to the needs of the engine to ensure that the engine can get the right amount of fuel supply under different operating conditions.

‌The fuel system consists of: fuel pump, fuel filter, fuel injector, fuel rail, pressure regulator and other components. These components work together to ensure that the engine can get a stable and appropriate amount of fuel supply under different operating conditions.

‌The application field of fuel system‌ is very wide, mainly including internal combustion engine equipment such as automobiles and aircraft. In automobiles, the fuel system is the power source of the engine; in aircraft, the fuel system not only provides fuel for the engine, but also has functions such as cooling other systems on the aircraft and balancing the center of gravity of the aircraft.