Cummins Diesel Generator Spray Inspection

Cummins diesel generators are equipped with Zhongzhi control panels, providing four levels of protection for the unit. Various alarm and protection prompts effectively extend the service life of the unit. The generator features stable shock resistance for long-term durability, with a baking paint finish that is both aesthetically pleasing and corrosion-resistant. The advanced combustion process significantly reduces fuel consumption, ensuring higher reliability with a major overhaul-free period exceeding 15,000 hours.

Why does a diesel engine spray atomized diesel? Atomized diesel fuel mixes more fully with air, enabling better combustion and maximizing engine power. The spray characteristics of diesel engines play a decisive role in the formation of combustible mixtures and the entire combustion process.

How to check the spray quality of Cummins diesel generator? Install the diesel generator injector on the tester and shake the control lever at 60-70 times per minute. The spray quality is judged based on the injector's injection status.

Specific requirements for Cummins diesel generator injector spray:

① The sprayed fuel should be atomized, finely and uniformly distributed, without significant splashing droplets, persistent oil beads, or local uneven concentration.

② The start and end of injection should be distinct with a crisp sound; there should be no oil dripping before or after injection; after multiple injections, the area near the injection port should remain dry or slightly moist.

③ Spray cone angle: Normally, it forms a approximately 40° cone shape centered on the nozzle's centerline. The spray cone angle indicates the diffusion degree of the fuel jet in the combustion chamber. Generally, a larger spray cone angle increases the volume of surrounding air and improves mixing. It should be based on matching requirements; a larger spray cone angle is not necessarily better for filling the combustion space and promoting combustion.

Inspection method: Place a piece of white paper 100-200mm directly below the injector. Shake the small diesel generator's control lever to make the injector perform one injection. Measure the diameter D of the oil stain on the white paper and the distance H from the injector nozzle. The spray cone angle is calculated as: a = 2arctan(D/2H). If it does not meet the requirements, clean the injector; if it still fails after cleaning, replace the injector.

Guangxi Dingbo Generator Set Manufacturing Co.,Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Dingbo has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to [email protected].