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Study on the relationship between high temperature oxidation and temperature rise rate of engine oil

Lei Wei (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Pan Xie (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Jing Guang Hu (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Zhen Hao Zeng (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Pei Yang (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Feihui Yang (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Jia Jun He (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)
Song Chen (School of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang, China and Key Laboratory of Intelligent Manufacturing and Service Performance Optimization of Laser and Grinding in Mechanical Industry, Yueyang, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 1 October 2024

28

Abstract

Purpose

The purpose of this paper is to study the relationship between high temperature oxidation and temperature rise rate of engine oil attempted to explore a new indicator to evaluate oil degradation.

Design/methodology/approach

Accelerated oxidation test combined with molecular simulation and road test is carried out in this paper. The temperature rise characteristics of mineral oil and synthetic oil under different oxidation temperatures (140°C, 155°C and 170°C) and time (50 h, 100 h, 150 h and 200 h) were determined by accelerated oxidation. The mechanism of temperature change characteristics of used oils was analyzed with molecular simulation. Two experimental vehicles carried six road tests with synthetic and mineral oil.

Findings

The results of this study show that the temperature rise rate of oxidized mineral and synthetic oil is higher than the new oil. The temperature rise rate is proportional to the oxidation time and oxidation temperature. The synthetic engine oil temperature rise rate is lower than that of the mineral engine oil. The same result was obtained in road tests. Molecular simulation verifies that small molecules were generated after oil oxidation which results in intermolecular friction and increased heat generation.

Originality/value

This paper indicates that temperature rise rate has potential to be taken as an indicator to evaluate oil oxidation which provides a new way for engine oil analysis.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0177/

Keywords

Acknowledgements

The authors acknowledge the financial support from the National Natural Science Foundation of China (52105055), Natural Science Foundation of Hunan Province (Grant No. 2023JJ30281), Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province (High Performance Manufacturing Processes and Service Performance Optimisation.

Citation

Wei, L., Xie, P., Hu, J.G., Zeng, Z.H., Yang, P., Yang, F., He, J.J. and Chen, S. (2024), "Study on the relationship between high temperature oxidation and temperature rise rate of engine oil", Industrial Lubrication and Tribology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/ILT-05-2024-0177

Publisher

:

Emerald Publishing Limited

Copyright © 2024, Emerald Publishing Limited

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