What Is the Function of Fuel Injector in A Diesel Generator?

If symptoms such as misfires, rough idling, or poor fuel economy occur during the operation of your diesel generator set, it is likely that your fuel injectors are clogged. A malfunctioning fuel injector can even cause the difficult starting of engine. In this article, we’ll introduce the function of diesel generator fuel injector and you’ll have a basic understanding of this device.

 

What is the function of fuel injector in diesel generator?

 

Diesel fuel injectors are an important component of diesel fuel system. The function of the fuel injectors is to deliver a precise amount of atomized and pressurized fuel into each cylinder. This helps to ensure efficient combustion, increased power and fuel economy, and smooth operation of diesel engine. Fuel injectors can optimize fuel consumption in traditional diesel engines and play a crucial role in their performance and efficiency.

 

Generally, diesel fuel injectors are made of durable materials such as stainless steel or high-strength alloys. They have to be able to withstand the high pressures and temperatures inside the cylinder and still deliver the fuel in a fine mist. They are quite complicated: the injector has a high micron filter on the top inlet side which corresponds to small hypodermic sized holes on the bottom for the atomizing of the diesel fuel.

 

Typically, diesel fuel injectors can be divided into three types: mechanical, common rail, and unit injector systems. Mechanical fuel injectors open and close the injector valve by using a mechanical linkage. Common rail systems use high-pressure fuel pumps to deliver fuel to a central rail, which is then distributed to the individual injectors. Modern diesel fuel injectors in these systems often use piezoelectricity. Unit injector systems combine the fuel pump and injector into a single unit.

 

How does a diesel fuel injector work?

 

The fuel injection system controls the flow of fuel into the combustion chamber. A diesel fuel injector consists of a solenoid, a nozzle, and a needle within the injector body. The solenoid acts as an electromagnetic valve. The fuel injectors in most electrical diesel engines are controlled by the ECM (Engine Control Module). The ECM adjusts the amount of fuel injected into the engine cylinder to meet a variety of operating conditions. It does so by collecting and processing readings from various sensors. The amount of fuel to be pumped is decided by the electronic control unit (ECU). After calculating the amount of fuel required, the fuel injectors inject the fuel via their nozzles connected to the combustion chamber.

 

Modern diesel engines are direct injection, meaning fuel is injected directly into the combustion chamber. Fuel is delivered into the chamber right into the top of the piston. Direct injection is used at higher speeds to provide more power and less chance of knocking.

 What may happen when diesel generator fuel injectors malfunction?

 

Fuel injectors in a diesel generator rely on clean diesel fuel and oxygen. If you use poor-quality diesel fuel, the fuel injectors won’t work well and issues like carbon deposits buildup in the cylinder and accelerated wear of the cylinder barrel and piston ring may arise. There might be a few possible symptoms including unstable idle speed, increased fuel consumption, weak acceleration, difficulty in starting, and excessive emissions. It’s suggested that you always purchase clean and high-quality fuel from reputable suppliers to ensure efficient and optimal performance of your generator. Additionally, water contamination in fuel can also wear out and destroy the injectors over time. Remember to replace Oil filters regularly.   

 

If diesel fuel injectors are leaking, you may smell the diesel in the vicinity of the generator. Due to the problem, the fuel consumption amount may increase suddenly and the generator is difficult to start. This may be caused by an old O-ring or a crack in the injector body. You need to find out the cause and replace the relevant components.

 

If there is an electrical fault interfering with the correct timing of the injector(s), or the injector gets clogged or its component becomes faulty, it will lead to decreased engine power and efficiency. You need to check the fuel injectors and replace them if necessary. We suggest that you contact a professional technician if you don’t have that much experience.

 

If you still have questions about diesel generator fuel injector or you are looking for a diesel generator, free free to contact us. Dingbo Power is a professional manufacturer of diesel generator with almost 20 years’ experience. We can help you find the generator that best fits your needs for a reasonable price. Don’t hesitate to contact us with any questions, concerns, or inquiries to learn more about the products & services we provide.