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Fuel Injector Spray Characteristics of Diesel Generators

Apr. 16, 2026

The fuel injector is one of the crucial components with extremely high machining precision in the diesel engine fuel system. Its main function is to receive the injection pulse signal from the ECU, precisely control the fuel injection quantity, and inject fuel into the combustion chamber in the form of a mist under a certain pressure with reasonable distribution, so as to mix with air to form the most favorable combustible mixture for combustion. Only when the fuel can be atomized into a mist can it better meet the performance requirements of the diesel engine. The ideal state of the injector includes a large dynamic flow range, strong anti-clogging and anti-pollution capabilities, and good atomization performance.


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Three Important Parameters Affecting the Spray of Diesel Generator Injectors

1. Spray penetration depth of diesel generator injector: refers to the shortest distance from the fuel spray beam from the orifice to the vertical plane, i.e., the visible length of the spray beam.

2. Spray cone angle of diesel generator injector: indicates the diffusion degree of the spray beam in the combustion chamber. Generally, as the spray cone angle increases, the volume of the enclosed air increases, resulting in better mixing. However, it cannot be assumed that a larger spray cone angle will allow the oil particles to fill the combustion space and be more conducive to combustion; instead, it depends on the matching requirements.

3. Orifice shape of diesel generator injector: the shape of the orifice on the pintle valve is the most direct factor affecting the atomization of the injector.

To evaluate the atomization quality of diesel fuel, it includes atomization fineness and uniformity. The finer and more uniform the diesel particles, the better the diesel atomization quality, which is more conducive to combustion.

 

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. has been established for many years. In addition to strict requirements on the quality of diesel generator set products and after-sales service, it also has strict regulations on the plant environment, production equipment and supporting facilities, which reflects the strict style of Dingbo people. It is not only responsible for generator products, customers, but also employees, so that every employee of Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. generation equipment can work in a comfortable environment, Make it comfortable for every visiting customer to visit. Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. Group, relying on high-quality generators, generator sets, diesel generator, diesel generator sets, good services and the care of friends from all walks of life, carries forward the enterprise spirit of "pragmatic innovation, pioneering, unity and hard work, dare to be the first", and adheres to the enterprise style of "treating people with sincerity and heart to heart", has won the strong support of customers in the fields of post and telecommunications, finance, petrochemical, metallurgy, transportation, education, medical care, etc, Having a proud performance. Dingbo people are gradually moving towards economies of scale and entering the international market after joining the WTO with flexible sales strategies and relying on the company's advantages and strength. If you would like to get more information welcome to contact us via [email protected].

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