Issue №: 3(122)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
IMPROVEMENT OF THE MIXTURE FORMATION PROCESS IN THE ENGINE COMBUSTION CHAMBER WHEN SUPPLYING A FOUR-COMPONENT TWO-PHASE FUEL MIXTURE
Burlaka Serhii – PhD in Industrial Engineering, Associate Professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agro-Industrial Complex, Vinnytsia National Agrarian University (3 Soniachna St., Vinnytsia, 21008, Ukraine, e-mail: ipserhiy@gmail.com, ORCID: https://orcid.org/0000-0002-4079-4867 ).
Boretska Tetiana – Head of the Scientific and Organizational Department of the Research Unit, Vinnytsia National Agrarian University (3 Soniachna St., Vinnytsia, 21008, Ukraine, e-mail: boretska2002@ukr.net, ORCID: https://orcid.org/0000-0002-7966-228X ).
Chernysh Roman – Front-end Developer at FlipSoft (Vinnytsia, 21008, Ukraine; e-mail: tschernysh@gmail.com; https://orcid.org/0009-0008-0505-9374).
The article considers the improvement of the mixture formation process in the engine combustion chamber when supplying a four-component two-phase fuel mixture. The relevance of the study is due to the need to increase the homogeneity of the fuel-air environment, intensify the evaporation of the liquid phase and ensure stable combustion of multicomponent fuels. A structural and functional scheme of the process is proposed, which includes a separate metered supply of four components, their preliminary mixing, the formation of a two-phase flow in the mixing chamber, subsequent spraying through the nozzle and the formation of a torch in the combustion chamber. Particular attention is paid to the mechanisms of dispersion of the liquid phase, evaporation of droplets, interaction of vapor and liquid phases with air and spatial distribution of the mixture in the chamber volume. The main parameters that affect the quality of mixture formation are determined: supply pressure, temperature of components, phase ratio, geometric characteristics of dosing channels and mixing unit, as well as spray dispersion. The feasibility of step-by-step mixture formation is substantiated, which allows to reduce the unevenness of the concentration of components and ensure a more stable structure of the two-phase torch. The proposed approach creates the prerequisites for increasing the area of interphase contact, accelerating heat and mass transfer, improving ignition conditions and increasing the completeness of combustion. The results can be used in the design and modernization of power systems for engines operating on multi-component alternative fuel compositions, as well as as a basis for further experimental and numerical research of mixture formation processes. The developed scheme allows us to trace the sequence of transformation of the initial components into a homogeneous fuel-air system prepared for ignition.
1. Burlaka S. A. Development of a biodiesel mixer and modeling of the mixing process. Bulletin of Mechanical Engineering and Transport. 2020. Vol. 11, No. 1. P. 11–17. DOI: 10.31649/2413-4503-2020-11-1-11-17.
2. Burlaka S. A., Galushchak O. O., Gumenyuk Y. V. Investigation of fuel flow in the nozzle atomizer when using alcohol additives in emulsified fuels. Bulletin of Mechanical Engineering and Transport. 2020. Vol. 11, No. 1. P. 18–27. DOI: 10.31649/2413-4503-2020-11-1-18-27.
3. Burlaka S. A., Mytko M. V., Boretska T. Yu., Yaroshchuk R. O. Stabilization of biofuel mixtures by the method of phase separation of diesel fuel with bioethanol. Bulletin of Mechanical Engineering and Transport. Vol. 21, No. 1. P. 30–37. DOI: 10.31649/2413-4503-2024-19-1-30-37.
4. Galushchak O. O., Burlaka S. A., Galushchak D. O., Malakov O. I. Substantiation of the influence of the temperature of the components of the mixed fuel on the engine operation. Bulletin of Mechanical Engineering and Transport. 2019. Vol. 9, No. 1. P. 38–43. DOI: 10.31649/2413-4503-2019-9-1-38-43.
5. Kravchenko S. S., Prokhorenko A. O., Kuzmenko A. P. Adaptation of an automobile gasoline engine to operate on a mixed fuel with bioethanol. Internal Combustion Engines. 2025. No. 1. P. 22–28. DOI: 10.20998/0419-8719.2025.1.03.
6. Ra Y., Reitz R. D. A vaporization model for discrete multi-component fuel sprays. International Journal of Multiphase Flow. 2009. Vol. 35, No. 2. P. 101–117. DOI: 10.1016/j.ijmultiphaseflow.2008.10.006.
7. Zigan L., Schmitz I., Flügel A., Wensing M., Leipertz A. Structure of evaporating single- and multicomponent fuel sprays for 2nd generation gasoline direct injection. Fuel. 2011. Vol. 90, No. 1. P. 348–363. DOI: 10.1016/j.fuel.2010.08.001.
8. Sazhin S.S., Elwardany A.E., Krutitskii P.A., Deprédurand V., Castanet G., Lemoine F., Sazhina E.M., Heikal M.R. Multi-component droplet heating and evaporation: Numerical simulation versus experimental data. International Journal of Thermal Sciences. 2011. Vol. 50, No. 7. P. 1164–1180. DOI: 10.1016/j.ijthermalsci.2011.02.020.
9. Fredrich D., Giusti A. Numerical investigation of multi-component droplet evaporation and autoignition for aero-engine applications. Combustion and Flame. 2022. Vol. 241. Article 112023. DOI: 10.1016/j.combustflame.2022.112023.
10. Stöhr M., Ruoff S., Rauch B., Meier W., Le Clercq P. Experimental study of droplet vaporization for conventional and renewable transportation fuels: Effects of physical properties and chemical composition. Fuel. 2024. Vol. 356. Article 129535. DOI: 10.1016/j.fuel.2023.129535.
11. Zhang Y., Meng K., Bao L., Lin Q., Pavlova S. Experimental Study on Evaporation and Micro-Explosion Characteristics of Ethanol and Diesel Blended Droplets. Atmosphere. 2024. Vol. 15, No. 5. Article 604. DOI: 10.3390/atmos15050604.
12. Cuoci A., Cipriano E., Saufi A.E., Frassoldati A. A numerical framework for modeling evaporation and combustion of isolated, spherically-symmetric, multi-component fuel droplets. Journal of Computational Science. 2024. Vol. 83. Article 102453. DOI: 10.1016/j.jocs.2024.102453
About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
