Agricultural Engineering, Volume 50 (2018)

COMPARISON OF TRIBOLOGICAL PROPERTIES OF SAE 0W-40 AND 5W-40 DIESEL ENGINE OILS

Raimondas Kreivaitis, Albinas Andriušis
Aleksandras Stulginskis University

Abstract

Nowadays friction reduction is of great importance due to fuel economy and energy saving issues. The internal combustion (IC) engine is widely used in rotation power production for moving machinery. The performance of internal combustion engine is closely related to its lubrication. Engine oil must ensure sufficient lubrication at all the lubrication regimes. Recently marketed lubrication oils possess different performance. However these differences are not always cost efficient. In those cases when cost is an issue some simple evaluation and comparison can be useful. The aim of current study is to compare tribological properties of two different diesel engine oils 0W-40 and 5W-40. Tribological test were performed using pin-on-disc and four-ball test schemes. The observed results show marginal difference between investigated lubrication oils. Their performances mostly differ at boundary lubrication regime where 0W-40 oil was superior to 5W-40. Moreover 0W-40 oil faster reaches transition boundary-to-mixed lubrication regime. However 5W-40 was considered to have better wear reduction ability.

Keyword(s): engine oil, friction, boundary lubrication, wear


References

A.N. Farhanah, M.Z.Bahak. Engine oil wear resistance. Jurnal Tribologi, 2015, 4, 10-20 pp.

E. Hu, X. Hu, T. Liu, L. Fang, K. D. Dearn, H. Xu. The role of soot particles in the tribological behaviour of engine lubricating oils. Wear, 2013, 304 (1–2), 152-161 p.p. doi.org/10.1016/j.wear.2013.05.002.

G.Yadav, S.Tiwari, M.L.Jain. Tribological analysis of extreme pressure and anti-wear properties of engine lubricating oil using four ball tester. Materials Today: Proceedings. 2018, 5(1), 248-253 p.p. doi.org/10.1016/j.matpr.2017.11.079.

K.Iman, K.Mansour, A.Reza, B.Mostafa. Stick-slip conditions in the general motion of a planar rigid body. Journal of Mechanical Science and Technology. 2013. 27 (9), 2577-2583 p.p. DOI 10.1007/s12206-013-0701-y

Lubrizol relative performance comparison tool. Available at: https://www.lubrizol.com/

Lubricant-and-Fuel-Additives/Engine-Oil-Additives/ACEA/Relative-Performance-Tool

N.W.M.Zulkifli, M.A.Kalam, H.H.Masjuki, M.Shahabuddin, R.Yunus. Wear prevention characteristics of a palm oil-based TMP (trimethylolpropane) ester as an engine lubricant. Energy. 2013. 54, 167–173 p.p. doi.org/10.1016/j.energy.2013.01.038

R.Niculescu, V.Iorga-Simăn, A.Trică, A.Clenci. Study on the engine oil’s wear based on the flash point. 7th International Conference on Advanced Concepts in Mechanical Engineering. 147 (2016) 012124. doi:10.1088/1757-899X/147/1/012124

S.Hisham, K.Kadirgama, D.Ramasamy, M.M.Noor, A.K.Amirruddin, G.Najafi, M.M.Rahman. Waste cooking oil blended with the engine oil for reduction of friction and wear on piston skirt. Fuel, 2017, 205, 247-261 p.p. doi.org/10.1016/j.fuel.2017.05.068.

T.Liping, Z.Xiaohua, S.Changshuai, T.Jian X.Daping. Study of the influences of rotary table speed on stick-slip vibration of the drilling system. Petroleum. 2015. 1 (4), 382-387 p.p. doi.org/10.1016/j.petlm.2015.10.004

Y.F.Liu, J.Li, Z.M.Zhang, X.H.Hu, W.J.Zhang. Experimental comparison of five friction models on the same test-bed of the micro stick-slip motion system. Mechanical Science. 2015. 6, 15-28 p.p. doi:10.5194/ms-6-15-2015


Full Text: PDF

Refbacks

  • There are currently no refbacks.
1974 views

Agricultural Engineering ISSN 1392-1134 / eISSN 2345-0371

This journal is published under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License. Responsible editor: Dr A. Žunda.