Changes of properties of engine oils diluted with diesel oil under real operating conditions
More details
Hide details
Faculty of Commodity Science and Product Management, Cracow University of Economics.
Faculty of Production Engineering, University of Life Sciences in Lublin.
Oil and Gas Institute – National Research Institute, Cracow, Poland.
Publication date: 2018-05-01
Combustion Engines 2018,173(2), 34-40
The aim of the article was to analyze changes in the trends of selected physical, chemical and functional properties of lubricating engine oil operating in a diesel-engine vehicle equipped with DPF. The vehicle was operated mainly in urban driving conditions (app. 70%), which impeded the DPF regeneration cycle and caused dilution of oil with unburned fuel. Changes in the following physical and chemical properties were assessed: the DF level in engine oil, viscosity (kinematic, dynamic HTHS and structural CCS), total base num-ber, acid number as well as the degree of oxidation, nitration and sulphonation. The tests have shown that the amount of unburned fuel that goes to the engine crankcase due to the unfinished DPF regeneration cycle is as high as 26.0–34.6%. Dilution of the lubricating oil with fuel leads to a significant reduction of its viscosity – about 30% of the fuel content causes a decrease in the kinematic viscosity measured at 100°C to the level of 7.7 mm2/s. There was also a significant decrease in total base number (TBN) < 2 mg KOH/g, and an increase in the total acid number (TAN). Moreover, the results obtained were analyzed for potential effects that could have been caused during prolonged engine operation by assessing the content of trace elements in the samples taken.
AGOSTON, A., ÖTSCH, C., JAKOBY, B. Viscosity sensors for engine oil condition monitoring—Application and interpretation of results. Sensors and Actuators A: Physical. 2005, 121(2).
BESSER, C., SCHNEIDHOFER, C., DÖRR, N. et al. Investigation of long-term engine oil performance using lab-based artificial ageing illustrated by the impact of ethanol as fuel component. Tribology International. 2012, 46(1).
BOOSER, R.E. Handbook of lubrication. Boca Raton. Florida, 1983.
BROUWER, M.D., GUPTA, L.A., SADEGHI, F. et al. High temperature dynamic viscosity sensor for engine oil applications. Sensors and Actuators A: Physical. 2012, 173(1).
BULSARA, M.A., HINGUZ, A.D., PATEL, K. Prediction of residual life of lubricant oil in four stroke engine. Proceedings of International Conference on Advances in Mate-rials and Product Design (AMPD 2015). 2015.
CLARC, R.J. On board monitoring of engine oil. Faculty of The Graduate College in partial fulfillment of the requirements for the Degree of Master of Science of Engineering Department of Aeronautical and Mechanical Engineering Advisor: Claudia Fajardo, Ph.D., 2011.
GILI, F., IGARTUA, A., LUTHER, R. et al. The impact of biofuels on engine oil performance. Lubrication Science. 2011, 23.
JAKOBY, B., EISENSCHMID, H., SCHATZ, O. et al. A multi-functional sensor for oil condition evaluation. Technisches Messen. 2001, 68(5).
KRAL, J., KONECNY, B., MADAC, K. et al. Degradation and chemical change of longlife oils following intensive use in automobile engines. Measurement. 2014, 50.
KUMBÁR, V., GLOS, J., VOTAVA, J. Monitoring of chemical elements during lifetime of engine oil. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. 2014, 62(1).
MALINOWSKA, M. Analiza zanieczyszczeń oleju silnikowego stosowanego w silniku Cegielski-Sulzer 3AL25/30. Zeszyty Naukowe Akademii Morskiej w Gdyni. 2014, 83.
NAIKAN, V.N.A., KAPUR, S. Reliability modelling and analysis of automobile engine oil. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Auto-mobile Engineering. 2006, 220(2).
PALKENDO, J.A., KOVACH, J., BETTS, T.A. Determination of wear metals in used motor oil by flame atomic absorption spectroscopy. Journal of Chemical Education. 2014, 91(4).
SEJKOROVÁ, M., GLOS, J. Analysis of degradation of motor oils used in Zetor tractors. Acta Universitatis Agriculturae Et Silviculturae Mendelianae Brunensis. 2017, 65(1).
SEJKOROVÁ, M., HURTOVA, I., GLOS, J. et al. Definition of a motor oil change interval for high ‑ volume diesel engines based on its current characteristics assessment. Acta Universitatis Agriculturae Et Silviculturae Mendelianae Brunensis. 2017, 65(2).
SEJKOROVÁ, M., POKORNY, J., JILEK, P. The usage of modern instrumental methods in diagnostics of quality of operated engine oils. In: Proceedings Deterioration, De-pendability, Diagnostics. Brno: University of Defence. 2014.
SEVERA, L., HAVLICEK, M., CUPERA, J. Changes of engine oil flow properties during its life cycle. Acta Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(4).
URZĘDOWSKA, W., STĘPIEŃ, Z. Olej silnikowy a biopaliwa – współdziałanie w eksploatacji. Nafta-Gaz. 2010, 10.
URZĘDOWSKA, W., STĘPIEŃ, Z. Wybrane zagadnienia dotyczące zmian właściwości silnikowego oleju smarowego w eksploatacji. Nafta-Gaz. 2012, 12.
VASANTHAN, B., DEVARADJANE, G., SHANMUGAM, V. Online condition monitoring of lubricating oil on test bench diesel engine & vehicle. Journal of Chemical and Pharmaceutical Sciences. 2015, 9.
WANG, S. Engine oil condition sensor: method for establishing correlation with total acid number. Sensors and Actuators B: Chemical. 2002, 86(2–3).
WOLAK, A., ZAJĄC, G. The kinetics of changes in kinematic viscosity of engine oils under similar operating conditions. Eksploatacja i Niezawodnosc – Maintenance and Reliability. 2017, 19(2).
YUNUS, S., RASHID, A.A., LATIP, S.A. et al. Compara-tive study of used and unused engine oil (perodua genuine and castrol magnatec oil) based on property analysis basis. Procedia Engineering. 2013, 68.
ZAJĄC, G., SZYSZLAK-BARGŁOWICZ, J., SŁOWIK, T. et al. Designation of chosen heavy metals in used engine oils using the XRF method. Polish Journal of Environmental Studies. 2015, 24.
ZIĘBA-PALUS, J., KOSCIELNIAK, P. An analysis of the similarity of motor oils on the basis of their elemental composition. Forensic Science International. 2000, 112.
Journals System - logo
Scroll to top