Working Principle Of Fuel Injection System

When you step on your gas pedal, your vehicle's throttle valve (which is a valve that opens and lets air into your engine) works in conjunction with your fuel injectors. When the throttle valve opens, your fuel injector sprays fuel to mix with the air and then enters the engine's combustion cylinders.

What does fuel injection system mean?

Fuel injection is a system in the engines of some vehicles which forces fuel directly into the part of the engine where it is burned. More precise fuel injection would make engines cleaner and more economical. Conventional fuel injection in a diesel engine involves a pump driven via a camshaft from the engine.

How the working principles of an injector in a diesel engine?

Working principle of a conventional fuel injector: It lifts off its seat while spraying the diesel into the cylinder in highly atomized or mist form. The moment the pressure drops, the needle valve comes back to its seat, which causes the injection to stop. The injection nozzle has extremely critical tolerances.

How does fuel system work?

The fuel is stored in the fuel tank and the fuel pump draws fuel from the tank. It then travels through the fuel lines and is delivered it through a fuel filter to the fuel injectors (carburetors and throttle body injection were used on older vehicles).

What are the 3 types of injectors?

Your vehicle can be equipped with one of the three most common injection systems on the market. GDI (Direct injection), SDI (Semi-direct injection) or TBI (Throttle body injection).

What are the four basic types of fuel injection system?

The fuel injection types used in newer cars include four basic types:

• Single-point or throttle body injection.
• Port or multipoint fuel injection.
• Sequential fuel injection.
• Direct injection.

What is the pressure for fuel injection?

Injection pressures during the whole process should be above 1000–1200 bar for a good spray formation and air–fuel mixture; a tendency in practice to 1600–1800 bar and higher is noted. The total nozzle area should be as small as possible in relation to cylinder diameter for good combustion, particularly at part load.

What is Benefits of fuel injector?

Advantages of Fuel Injection: Cleaner and more efficient combustion. Sharper and quicker throttle response. Better fuel efficiency or mileage. Compared to carburetors, FI systems are maintenance-free and less prone to damages.

What are the main components of fuel injector?

• Overview.
• High Pressure Pump.
• Accumulator.
• Fuel Injector and Fuel Injection Nozzle.
• Fuel Metering.
• Nozzle Needle Control Actuators.

What controls a fuel injector?

The fuel pressure regulator controls fuel pressure to the injectors. The regulator is usually located on the engine fuel supply rail, but is part of the fuel pump module assembly inside the fuel tank on vehicles that have a “returnless” EFI system.

What are the 5 components of a diesel fuel system?

A basic diesel fuel system is made up of five essential components. These are the tank, the fuel transfer pump, filters, the injection pump, and the injection nozzles. The fuel tanks in diesel systems are typically crafted from aluminum alloys or sheet metal.

What are the seven 7 components of fuel system?

The fuel system of a petrol car consists mainly of a fuel tank, fuel pump, piping, fuel filter, fuel injectors, and a fuel pressure regulator. The most important element of the fuel system is the fuel injector.

What are the two types of fuel systems?

If we see from the ignition methode, there are two types of fuel system, they're direct injection and indirect injection.

• Direct injection system. This system has an injector that leads directly to the top of the piston (combustion chamber located on the piston surface).
• Indirect injection system (IDI)

What are the three main components of the fuel system?

Your car's fuel system has five main components: the fuel tank, fuel lines, fuel filters, fuel pumps, and fuel injectors.

What is called fuel injector?

Definition of fuel injector : a pump and valve mechanism that sprays liquid fuel intermittently into the cylinder of a diesel engine.

Where is fuel injector used?

A fuel injector is a device for atomizing and injecting fuel into an internal combustion engine. The injector atomizes the fuel and forces it directly into the combustion chamber at the precise point in the combustion cycle.

Which injector is best?

5 Best Fuel Injector Cleaners

• Top Pick: Lucas Upper Cylinder Lubricant & Fuel Injector Cleaner.
• Best Fuel System Cleaner: Chevron Techron Concentrate Plus.
• Best Value: STP Fuel Injector & Carburetor Cleaner.
• Best For Clogs: Red Line 60103 Complete SI-1 Fuel System Cleaner.
• Also Consider: Royal Purple 18000 Max Atomizer.

What are the 3 common types of fuel pump?

Mechanical, electric, and high-pressure fuel pumps are the three types of fuel pumps. A fuel pump is a fluid handling device that moves gasoline from the fuel tank to the engine. It's often found in internal combustion engines.

What is fuel injection volume?

Injected fuel quantity is the amount of fuel delivered to an engine cylinder per power stroke. It is often expressed in mm3/stroke or mg/stroke.

Why is fuel injected at high pressure?

High Pressure Fuel Injection Results In Better Fuel Atomisation And Improves The Fuel/Air Mixing To Promote Complete Combustion, Thereby Increasing The Fuel Efficiency With Emission Control.