DOI: https://doi.org/10.32515/2664-262X.2024.9(40).2.78-87

Study of the influence of a variable electromagnetic field on the tribological properties of motor oils

Andrii Gypka, Victor Aulin, Victor Hud, Igor Tkachenko, Lubomir Slobodyan, Dmitro Mironov

About the Authors

Andrii Gypk, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine, е-mail : Gypkab@gmail.com, ORCID ID: 0000-0002-7565-5664

Viktor Aulin, Professor, Doctor in Technics (Doctor of Technic Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, e-mail: AulinVV@gmail.com, ORCID ID: 0000-0003-2737-120X

Victor Hud, Professor, Doctor in Technics (Doctor of Technic Sciences), Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine, e-mail: vic_g@ukr.net, ORCID ID: 0000-0001-5312-526X

Igor Tkachenko, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine, ORCID ID: 0000-0002-2639-7988

Lubomir Slobodyan, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine, e-mail: slobodyanlybchik48@gmail.com, ORCID ID: 0000-0002-9191-6801

Dmitro Mironov, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Ternopil Ivan Puluj National Technical University, Ternopil, Ukraine, e-mail: mironov.epz@gmail.com, ORCID ID: 0000-0002-5717-4322

Abstract

A set of studies was conducted on the influence of mechanical, thermal and electromagnetic factors under the action of the variable electromagnetic field of the oil pumping device on the properties of M-6В3 motor oils; M-10Г; M-10Г2. The research was carried out on a special stand, which allows to simulate the operating conditions of the oil injection device on the car engine during the start-up period. The evaluation of the efficiency of the oil pumping device was determined by the volume and effective coefficients of the useful action. In the process of research, oils (fresh and used) that were exposed to an alternating electromagnetic field and oils that were not exposed to the corresponding influence were compared according to the main physicochemical properties: kinematic viscosity at temperatures of 373, 323, 293, 273 and 258 K; solidification temperature of oil, K; viscosity index; ash content, %; the content of refractory mechanical impurities, %; iron content, %. The results were obtained on the effect of an alternating electromagnetic field on the viscosity-temperature parameters of fresh M-6В3 oils; M-10Г; M-10Г2. In the temperature range of 293...323 K, a decrease in the viscosity of the studied oils was observed. An increase in temperature eliminates the difference between processed and unprocessed oils. The effect of the duration of the alternating electromagnetic field on the viscosity index of the studied oils at a temperature of 258 K was studied. The optimal duration of olive processing was determined, which is 9...12 minutes, depending on its organic basis and the presence of additives in it. The characteristics of changes in the viscosity-temperature characteristics of the studied oils after certain periods of time after the action of a variable electromagnetic field on them were analyzed. It has been confirmed that these characteristics of processed oils are approaching the similar characteristics of untreated oils over time, except for M-6В3 oil, which stably retains the acquired properties even after a long time of its processing. With the use of a special installation that simulates the work of tribo-coupling "cam-pusher", the influence of an alternating electromagnetic field on the anti-wear and anti-seize properties of the studied oils was investigated. A 1.2-1.5 times reduction in the amount of wear of both the working surfaces of the pushers and the cams was noted, in the absence of varnish deposits on them.

Keywords

engine, wear, burr, engine oil, variable electromagnetic field

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References

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Copyright (c) 2024 Andrii Gypka, Victor Aulin, Victor Hud, Igor Tkachenko, Lubomir Slobodyan, Dmitro Mironov