Login Register Cart 0
Generic placeholder image

Recent Patents on Engineering

Editor-in-Chief

ISSN (Print): 1872-2121
ISSN (Online): 2212-4047

Back
Journal Home About Journal Editorial Board Journal Insight Current Issue Volumes/Issues
Subscribe
Research Article

Dynamic Viscosity-Temperature Characteristics and Models of Various Lubricating Oils

Author(s): Yanshuang Wang*, Xudong Gao, Yuhai Shen and Jianghai Lin

Volume 17, Issue 6, 2023

Published on: 20 October, 2022

Article ID: e061022209657 Pages: 9

DOI: 10.2174/1872212117666221006122325

Price: $65

Abstract

Background: The dynamic viscosity-temperature characteristics of lubricants are the main factors used to determine the oil film thickness and carrying capacity. There are few studies on the factors affecting the dynamic viscosity-temperature characteristics of lubricating oils and the dynamic viscosity-temperature model.

Objective: This research aims to analyse the influences of lubricating oil type and initial kinematic viscosity on dynamic viscosity-temperature characteristics and present a new dynamic viscositytemperature model.

Methods: The characteristic curves of dynamic viscosity versus temperature of polyol ester oil, paraffinic mineral oil, and five types of PAO (poly α-olefin) oils with different initial viscosities were obtained by using a kinematic viscosity test device and a density test device. The influences of lubricating oil type and lubricating oil viscosity on dynamic viscosity-temperature characteristics were analysed. A new dynamic viscosity-temperature model was presented based on our patent technology and repeated verification.

Results: Viscosity-temperature curves of three different types of lubricating oils and viscositytemperature curves of PAO oils with different initial kinematic viscosities were obtained. A new dynamic viscosity-temperature model η = A x e(-T/n) + η0 was proposed.

Conclusion: The dynamic viscosity-temperature characteristics of lubricating oils are not only determined by the type of oils but also determined by the initial kinematic viscosity. The variation of dynamic viscosity of lubricating oils with temperature in the scope of -40~110°C can be described by the following viscosity-temperature model: η = A x exp (-T/n) + η0 which can be used in a wider temperature range than the existing models.

Graphical Abstract

[1]
Y.S. Wang, B.Y. Yang, and L.Q. Wang, "Experimental determination of kinematic viscosity of two kinds of aviation lubricating oils", J. Henan Univ. Sci. Technol., vol. 6, pp. 13-15, 2004.
[http://dx.doi.org/10.15926/j.cnki.issn1672-6871.2004.06.004]
[2]
S. Ma, X. Zhang, K. Yan, Y. Zhu, and J. Hong, "A study on bearing dynamic features under the condition of multiball–cage collision", Lubricants, vol. 10, no. 1, p. 9, 2022.
[http://dx.doi.org/10.3390/lubricants10010009]
[3]
X.H. Li, and X.J. Zhao, "Analysis of influencing factors of lubricating oil viscosity", Lubr. Oil., vol. 6, pp. 59-64, 2009.
[http://dx.doi.org/10.19532/j.cnki.cn21-1265/tq.2009.06.011]
[4]
L.C. Espinoza, M. Vacacela, B. Clares, M.L. Garcia, M.J. Fabrega, and A.C. Calpena, "Development of a nasal donepezil-loaded microemulsion for the treatment of alzheimer’s disease: In vitro and ex vivo characterization", CNS Neurol. Disord. Drug Targets, vol. 17, no. 1, pp. 43-53, 2018.
[http://dx.doi.org/10.2174/1871527317666180104122347] [PMID: 29299992]
[5]
D. Das, A. Routray, S. Pattanaik, P.K. Parhi, B.R. Das, and S.N. Das, "Effect of particle size distribution and selective alcohol additives for preparation of high concentration coal-water slurry", Micro Nanosyst., vol. 12, no. 2, pp. 102-111, 2020.
[http://dx.doi.org/10.2174/1876402912666191010142942]
[6]
M.H. Esfe, M.H. Hajmohammad, and S. Wongwises, "Pareto optimal design of thermal conductivity and viscosity of NDCo3O4 nanofluids by MOPSO and NSGA II using response surface methodology", Curr. Nanosci., vol. 14, no. 1, pp. 62-70, 2017.
[http://dx.doi.org/10.2174/1573413713666170914103043]
[7]
E. Baralt, C.Y. Chen, Y.L. Hao, W. Ho, A. Pradhan, and J. Rosalli, "Hydrocarbon mixture exhibiting unique branching structure", US Patent 2019 0338211, 2019.
[8]
X.Y. Ge, "System and method of monitoring viscosity of fluid in real-time", US Patent 20160131566, 2016.
[9]
Y. Yoshida, and M. Monoi, "Dialkyl ether, and lubricant base oil and lubricating oil composition containing the same", US Patent 9365789, 2016.
[10]
Z.L. Li, W.Y. Zhu, H.J. Lei, F.Q. Wu, and Z.X. Zeng, "Method for preparing polyester hot melt adhesive with high viscosity and locally sensitive viscosity-temperature property", US Patent 10301516, 2019.
[11]
K. Tagawa, "Lubricant base oil and a process for producing the same, and lubricating oil composition", US Patent 8703663, 2014.
[12]
T. Aoki, K. Tagawa, and S. Shirahama, "Operating oil for buffer", US Patent 8603953, 2013.
[13]
D. Chen, Z.Y. Li, N.M. Tan, T.Q. Yang, and M. Ouyang, "Production technology of oil for 90SN", CN Patent 112125142, 2019.
[14]
S.Q. Long, S. Li, Y. Xiong, and R.X. Ouyang, "Lubricating oil composition and preparation method thereof", CN Patent 110221179, 2019.
[15]
Y.C. Li, W.Y. Li, H.Q. Chen, T. Tang, L.X. Fu, and R. Jia, "Composition of door closer oil", CN Patent 107158616, 2019.
[16]
F. Tao, W.H. Wei, J. Li, P.Y. Li, Y.Z. Zhao, and X.D. Wu, "Compressor lubricating oil composition and preparation method thereof", CN Patent 2019109726789, 2019.
[17]
G.X. Cai, Y.B. Ma, and B.S. Chen, "Base oil of cotton picker spindle lubricating grease", CN Patent 109041264, 2019.
[18]
R. Parhi, S.S. Reddy, and S. Swain, "Transdermal delivery of ondansetron HCl from thermoreversible gel containing nanocomposite", Curr. Nanomater., vol. 4, no. 2, pp. 137-147, 2019.
[http://dx.doi.org/10.2174/2405461504666190530123120]
[19]
Y. Jin, X.H. Zhu, Y. Jiang, C. Wang, B. Liu, and H.Q. Wen, "Kinematic viscosity measuring device and using method thereof", CN Patent 104948491, 2019.
[20]
S.Z. Liu, and H.R. Fu, "The influence of low temperature on the properties of lubricating oil", Lubr. Oil., vol. 2, pp. 18-20, 2010.
[http://dx.doi.org/10.19532/j.cnki.cn21-1265/tq.2010.02.006]
[21]
R.R. Zhao, Study of lubricating oil viscosity-temperature characteristics on scuffing capacity of gears., Northeastern University, 2012.
[22]
Z.F. Wang, Y.F. Liu, X.J. Fu, R. Guo, and J.G. Yang, "Experimental study on viscosity-temperature characteristics of lubricating oil", Lubr. Eng., vol. 4, pp. 24-28, 2016.
[23]
D.H. Dong, F.Y. Li, G.Y. Li, Z.J. Zhu, Y.F. Wang, and J. Liu, "Study on viscosity-temperature characteristics of lubricating oil for bulldozer gearbox", Lubr. Eng., vol. 8, pp. 39-42, 2016.
[24]
Y.J. Zhang, J.M. Wang, M. Cai, and H.B. Ji, "Study on viscosity-temperature characteristics of oil film bearing oil", Lubr. Eng., vol. 3, pp. 75-78, 2014.
[25]
P.S. He, "WLF Equation-The special temperature dependence of segment motion", Polym. Bull., vol. 2, pp. 75-78, 2002.
[26]
Z.S. Zhang, and G.X. Cui, Fluid Mechanics, 3rd Tsinghua University Press: Beijing, China, 2015.
[27]
T.B. Zhu, Encyclopedia of Grease Technology, 2nd Sinopec Press: Beijing, China, 2009.
[28]
Y.S. Wang, Y.L. Liu, S.C. Li, L.T. Xu, S.H. Zhang, and Z.M. Zhang, "Lubricating oil dynamic viscosity-temperature model", CN Patent 110757168, 2017.

Rights & Permissions Print Cite
© 2024 Bentham Science Publishers | Privacy Policy