Fuel Injector in Fuel Injection System – How it Works?

The fuel injection in an automotive is an essential system that performs the delivery of fuel in internal combustion engines. Fuel injection had been in usage in 1980s and 1990s. In this article, we will discuss how the fuel injector in the system in a vehicle works.

Correct amount of fuel to the engineThe fuel injector is a valve, and is controlled electronically by the Engine Control Unit (ECU). The fuel pump in the vehicle sends fuel to the injector. The number of times the fuel injector opens and closes depends on the inputs from the ECU. The injector needs to act fast. The more the number of times is, the more is the amount of fuel delivered. This process ensures that the correct amount of fuel is supplied to the engine.

The fuel injector receives the pressurized gas through the gas pumpThe fuel is sent at an approximated pressure of 0.35 MPa to the pump (high-pressure) from an electric fuel pump (lower pressure). The fuel pump ensures that the fuel is at the predetermined pressure when entering the combustion chamber. The pressure is regulated by the fuel pressure regulator.

Injector sprays gasoline mistThe fuel injector is equipped with an electromagnet, which makes the valve of the injector open. Thus, by opening, the injector makes the pressurized fuel to come out through a small nozzle. The nozzle helps in turning the fuel into droplets of as small a size as possible; because, the smaller the droplets are, the easier will be the combustion.

The intake manifold brings air from outside. Here, it's important to get the mixture in correct proportion for maximal combustion. This is made sure by electronic sensors. The process of fuel injection is patterned, according to the intake stroke associated with each cylinder.

For each cylinder, an individual fuel injector is usedIn multiport fuel injection, the fuel gets injected into the cylinders through the valves. The fuel pump in the fuel delivery system sends fuel to the injectors. Each fuel injector ensures that the volume of fuel is controlled.

Ensures fuel injection system works properlyThe fuel injector in fuel injection system ensures that the fuel injector regulates the amount of fuel flowing to the engine, and sends the correct amount of fuel to ensure that the combustion is optimal.

Precise metering of fuel injectorIn fuel injection system, the intake air can be measured accurately and the air-fuel mixture can be held at the optimal level by sensor in the exhaust system.

For each stroke in multiple fuel injection system, multiple number of injections happen. This ensures a better quality of air-fuel mixture and leads to subsequent combustion. In addition, this ensures economy in fuel consumption and optimal function of the engine.

Fuel injection is widely used in modern vehicles. If you take proper care as advised by the manufacturer, fuel injection will make your vehicle giving a good driving experience, and will ensure longer life of the engine.

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