The fuel injection in an automotive is an essential system that performs the delivery of fuel in internal combustion engines.

1. Fuel Injector in Fuel Injection
System – How it Works?

2. 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.

3. Correct amount of fuel to the engine
The 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.

4. The fuel injector receives the pressurized gas
through the gas pump
The 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.

5. Injector sprays gasoline mist
The 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.

6. 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.

7. For each cylinder, an individual fuel injector is used
In 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.

8. Ensures fuel injection system works properly
The 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.

9. Precise metering of fuel injector
In 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.

10. 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.

11. Airtex Fuel Delivery Systems is the leading aftermarket
supplier of mechanical and electric fuel pumps. For over
50 years, the Airtex brand has been the benchmark for
leading companies in the automotive aftermarket. If you
are searching for a fuel pump, consider Airtex. An
Airtex fuel delivery system has exceptional quality that
meets or exceeds OE design specifications and ISO
standards.