Experimental and analytical study of acid number variation in engine oils under operational contamination

Скорочена інформація про документ
dc.contributor.authorDykha, M.O.
dc.contributor.authorHetman, M.V.
dc.contributor.authorDytyniuk, V.O.
dc.contributor.authorMakovkin, O.M.
dc.date.accessioned2026-05-08T11:40:00Z
dc.date.available2026-05-08T11:40:00Z
dc.date.issued2026
dc.description.abstractThis paper presents an experimental and analytical study of the variation of the total acid number (TAN) in engine oils under operational contamination. The research is aimed at assessing the correlation between the acidity growth of lubricants and their wear behavior in the four-ball test configuration. Theoretical modeling and experimental testing were performed to identify the parameters of a wear law that incorporates contact pressure, oil viscosity, hardness, and TAN as key variables. The obtained results confirm that the acid number increases significantly during oil operation: from 0.9 to 2.9 mg KOH/g—which leads to an intensified wear rate of the contact surfaces. The proposed model quantitatively describes the relationship between the acidity level and wear intensity and enables prediction of oil performance based on its physicochemical degradation. The developed approach allows for improved evaluation of the residual life of lubricants and optimization of maintenance intervals for internal combustion engines.
dc.identifier.citationDykha M. O. , Hetman M. V., Dytyniuk V. O., Makovkin O. M. Experimental and analytical study of acid number variation in engine oils under operational contamination // Problems of Tribology. 2026. Vol. 31, No. 1/119. P. 48-55.
dc.identifier.doihttps://doi.org/10.31891/2079-1372-2026-119-1-48-55
dc.identifier.urihttps://elar.khmnu.edu.ua/handle/123456789/21053
dc.language.isoen
dc.publisherХмельницький національний університет
dc.subjectengine oil degradation
dc.subjecttotal acid number (TAN)
dc.subjectoperational contamination
dc.subjectwear model
dc.subjectfourball test
dc.subjectphysicochemical properties
dc.subjectlubrication
dc.subjecttribology
dc.subjectpredictive maintenance
dc.titleExperimental and analytical study of acid number variation in engine oils under operational contamination
dc.typeСтаття
Файли
Контейнер файлів
Зараз показуємо 1 - 1 з 1
Ескіз
Назва:
6_Dykha.pdf
Розмір:
612.51 KB
Формат:
Adobe Portable Document Format
Завантажити
Ліцензійна угода
Зараз показуємо 1 - 1 з 1
Назва:
license.txt
Розмір:
4.26 KB
Формат:
Item-specific license agreed upon to submission
Опис:
Завантажити
Зібрання
Problems of Tribology = Проблеми трибології - 2026 рік