An aircrafts’ engine is a lot different from a car engine. Even the part that supplies the fuel to the engine works differently for an aircraft than a car. So, knowing which parts serve what purpose is necessary.
Studying the aircrafts parts, function, and operation is necessary for aircraft engineers. One such part of an aircraft is the engine injector. The main purpose of the engine injector is to supply fuel to the necessary part of the aircraft.
Apart from this, an engine injector performs other parts and operations, which we will discuss in this blog. Moreover, a professional aviation welding technician should know an engine injector's functions, parts, and operations.
What Is The Function Of An Aircraft Engine Injector?
The aircraft engine injector is responsible for supplying the necessary fuel to the engine for combustion. The engine compression cycle acquires high-pressure fuel from the injection system. When it comes in contact with the air at high temperatures, it ignites. The system also consists of a displacement pump that can inject different amounts of fuel.
Injectors are the solenoid valves that open and close at the precise reaction of an electric pulse. These injectors are responsible for supplying the correct amount of fuel to the intake duct or precombustion chamber.
However, it depends on whether it is a direct injection system or an indirect one. They are responsible for supplying the fuel homogeneously without dripping. Thus, it helps to maintain a constant flow of fuel to the engine without any disturbance.
Parts Of An Engine Injector
An engine injector is not a whole part. Rather, it consists of different parts such as the nozzle holder, nozzle, nozzle nut, cap nut, stem, return connector, spring, spring adjusting nut, and fuel inlet.
The rod adjusts the spring, and the nut is responsible for adjusting the force with which the fuel is sprayed. The nut is attached to the rod that adjusts the force of the fuel. The fuel flows from the marked inlet to the perforated duct.
A needle valve is located at the ends of the nozzle, which prevents the fuel from dripping through the holes as it passes through the injector ducts. The fluid is also atomized to the chambers of combustion. A small amount of fuel is also released upwards, which allows the needle, the nozzle, and the rest of the components to be lubricated.
The atomization pattern is the way fuel is discharged. It depends on the pressure inside the injector, as well as the number, size, and angle of the holes in the nozzle. Depending on the type and size of the engine, you can find a variety of nozzles.
Types Of Engine Injectors
There are two main types of engine injectors
Electronic Injectors
- Mechanical Injectors
- Electronic Injectors
Electronic injectors have multiple sensors that send a signal to the control unit to determine the type and amount of fuel to transfer. It determines how much fuel should be provided at each moment.
The control unit then activates them and closes by recovering an internal spring. A professional aviation technician will know how these injectors function. Such injectors are more common in gasoline engines.
Mechanical Injectors
These are popular in diesel engines. They are responsible for pulverizing the fuel. They also control the quantity and time of fuel pulverization.
Conclusion
Fuel injectors are necessary for supplying the correct amount of fuel to the engine at the right time, which prolongs the engine's life. Moreover, if you want to maintain your aircrafts engine injector, it is best to take services from an aviation expert.
About Acorn Welding
Acorn Welding is an aviation repair and manufacturing specialist based in Edmonton, Alberta. We are your quality "One Stop Shop" for aircraft exhaust and engine mounts. Serving customers worldwide, we are Canada's largest aircraft exhaust and engine mounts repair company, plus the world's largest radial and vintage aircraft exhaust repair company. Click here to learn more about the products we offer. Or, if you have any questions, you can contact us here.
