Types Of Fuel Injection System In The Petrol Engine – AutoReportNG
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Types Of Fuel Injection System In The Petrol Engine



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Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector.

Carburetor Vs Fuel Injection | What's The Difference?

All diesel engines use fuel injection by design. Petrol engines can use gasoline direct injection, where the fuel is directly delivered into the combustion chamber or indirect injection where the fuel is mixed with air before the intake stroke.

On petrol engines, fuel injection replaced carburetors from the 1980s onward. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburetor relies on suction created by intake air accelerated through a Venturi tube to draw the fuel into the airstream.

Below are the types of fuel injection systems that are common in the petrol engine.

1- The Carburetor System

This is commonly called a carburetor, is a device for mixing air with fuel before the mixture is pumped to the internal combustion engine, and its operating principle is based on the fogging of air particles through the joints, then with the air from the mixed external environment.

2- Butterfly Injection (TBI)

According to the old systems, it appeared right after the carburetor and used a machine in one place, like the carburetor.

3- EFI (Complete Electronic Injection)

The electronic fuel injection system. The fuel is injected by an electronic pump that manages the air drawn into the cylinder by suction so that the fuel is introduced indirectly.

4- FSI (Stratified Fuel Injection)

Compactor conventional fuel injection system. Each cylinder had two sprays in the manifold and one integrated directly into the head.

5- (MPI) Multipoint Fuel Injection

The multipoint fuel injection system. Fuel is injected intermittently and all are sprayed at the same time, and one sprayer is used for each cylinder.

6- GDI (Direct Injection)

The compressed air in the cylinder itself is treated in the same way as with a diesel engine, in which the sprayer sprays fuel directly on the surface of the piston and the electronic sprinkler is located above the cylinder and at the side of the valves and the spark plug, leaving its old place in the manifold.

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