IMPROVING THE ABILITY OF MOTOR OILS TO THE EFFECTS OF HIGH TEMPERATURES
Keywords:
motor oil, high-temperature stability, varnish deposits, detergent–dispersant additives, antioxidants, engine lubrication.Abstract
In modern internal combustion engines, lubricating oils are exposed to high-temperature zones where hydrocarbons and other oil components undergo thermo-oxidative degradation. This process leads to the formation of low-volatility, highly viscous, and poorly oil-soluble oxidation products, such as oxyacids, asphaltenes, and acidic resins. These compounds accumulate on critical engine parts, forming varnish deposits that impair piston ring mobility, reduce sealing efficiency, and contribute to wear and corrosion of cylinder walls. The consequences include decreased engine efficiency, reduced compression, and increased risk of component failure. Enhancing these properties is essential for extending engine life, reducing maintenance costs, and improving performance under extreme conditions.
Downloads
References
1. Dzherikhov V.B. Automotive operational materials: textbook. St.Petersburg: SPGASU, 2009
2. Alimova Z. K., Makhamadjanov, M.I., &Magdiev, K. I. (2021). Research Of Anti-Corrosion Properties Of Engine Oils When The Engine Is Running. The American Journal of Agriculture and Biomedical Engineering, 3(11), 28-33.
3. Alimova, Z., Makhamadjanov, M. I., & Magdiev, K. (2022). The effect of changes in the viscosity parameters of engine oils on the operation of engine parts. Eurasian Journal of Academic Research, 2(10), 151-154.
4. Khamidullaevna, A. Z. (2022). Studies of anticorrosive properties motor oils and ways to improve. European International Journal of Multidisciplinary Research and Management Studies, 2(06), 6-12.
5. Alimova Zebo Kh, Abdurazzoqov Abduaziz A, & Yuldasheva Gulnora B. (2022). Improving the Anticorrosive Properties of Motor Oils by Adding Additives. Texas Journal of Engineering and Technology, 8, 16–19.
6. Alimova Zebo Xamidullayevna, & Niyazova Gulhayo Parpiyevna. (2022). Research of the mechanism of action of the protective properties of inhibited compositions. The American Journal of Engineering and Technology, 4(02), 19–22.
7. Khamidullaevna, A. Z., & Miraziz, I. (2022). Regularities of the mechanism of varnish formation on the surface of parts of internal combustion engines. Innovative Technologica: Methodical Research Journal, 3(6), 1-5.
8. Alimova, Z. (2018). The influence of the process off oxidation of engine oils on engine performance and improving antioxidant properties. Acta of Turin Polytechnic University in Tashkent, 8(1), 17.
9. Xamidullayevna, A. Z., & Parpiyevna, N. G. (2022). Research of the mechanism of action of the protective properties of inhibited compositions. The American Journal of Engineering and Technology, 4(02), 19-22.
10. Khamidullaevna, A. Z., & Faxriddin, S. (2022). The aging process of motor oils during operation. European International Journal of Multidisciplinary Research and Management Studies, 2(06), 166-169.
