The Influence of Deposits on the Fuel Injectors’ Atomization Characteristics and the Efficiency of Their Ultrasonic Cleaning on the AUTOOL CT160 Stand
DOI:
https://doi.org/10.32515/2664-262X.2026.14(45).268-280Keywords:
fuel injector, fuel atomization, deposits, ultrasonic cleaning, diagnostics, injector performance, mixture formationAbstract
The article investigates the effect of operational deposits on the spray characteristics of gasoline engine fuel injectors and evaluates the effectiveness of their restoration by means of ultrasonic cleaning. The physical mechanisms of the mixture formation process deterioration are analyzed, in particular, an increase in the length of the spray torch, droplet enlargement, uneven fuel supply and combustion chamber surfaces’ wetting. The results of modern studies, confirming the negative impact of contaminants on fuel consumption, combustion stability and the level of harmful emissions, are summarized.
The experimental part of the workpaper is devoted to bench diagnostics of injectors in various technical conditions: new, after operation and after ultrasonic cleaning. A set of tests, which included checking the tightness, uniformity of fuel supply, spray characteristics and injection volume in different operating modes, was carried out. It was found out that operational deposits lead to a decrease in injector performance, disruption of the spray torch structure and operation stability deterioration.
Ultrasonic cleaning proved to be an effective way of removing contaminants and restoring the main operating parameters of injectors to values close to their original ones. The results confirm the feasibility of injectors’ regular diagnostics and cleaning injectors to maintain efficient engine operation and reduce harmful emissions.
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Copyright (c) 2026 Sergiy Posonskiy, Oleg Babak, Anatolij Vychavka
This work is licensed under a Creative Commons Attribution 4.0 International License.
