The influence of fuels chemical composition on its lubricity : new views on the mechanism of protectionlayer creation during tribological process

• Autorzy: Kulczycki A. , Ozimina D.

Identyfikatory

DOI

10.5604/12314005.1213558

• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to examine the current views on the mechanism of the formation of a protective film by mineral fuels and biocomponents (FAMEs and alcohols). As the experimental data show, the ability of fuels / biofuels to form a protective film under different conditions is very important to the efficient operation of fuel pumps. The mating parts of pumps are protected against wear and seizure because of the interactions between the metal surfaces and the lubricant (fuel / biofuel) at the molecular level. The tribochemical research focuses on the tribochemical reactions of lubricating additives because the base fuel is frequently treated as a solvent only. Today, most fuels for CI engines contain FAME, a biocomponent that may differ in the chemical structure depending on the type and properties of the vegetable oil used. The current trend is to produce fuels from biomass hydrocarbons, which are blended with mineral diesel fuel. It has been found that the chemical structure of biohydrocarbons is responsible for changes in the lubricity of the blends. Lubricity is determined using a standard high frequency reciprocating rig (HFRR) test because of one parameter, i.e. the wear of the ball. The results of the authors’ previous studies were used to create a new model of the protective film formation by fuels containing biocomponents (oxygenates) and biohydrocarbons. The model makes it possible to describe the tribochemical processes quantitatively. The quantitative analysis is based on the parameter αi, which is the measure of reactivity of lubricating additives and/or biocomponents related to the properties of the mating parts and the operating conditions in a tribological system. The new approach to the mechanism of the protective film formation, based on the quantitative description of tribochemical reactions, enables us to begin research on new criteria for the lubricity of fuels containing lubricating additives and biocomponents.

Słowa kluczowe

EN

mechanical engineering; fuel; oils; lubrication

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 1
• Strony: 178--184
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Kulczycki A.

• Air Force Institute of Technology Ksiecia Boleslawa Street 6, 01-494 Warsaw, Poland tel.: [phone], fax. [phone]

autor

Ozimina D.

• Kielce University of Technology 1000-lecia PP Avenue 7, 25-314 Kielce

Bibliografia

• [1] Hrach, R., Emission of electrons from MIM systems: Discussion of processes in the cathode, Journal of Physics, B23, pp. 234-242, Czech 1973.
• [2] Illenberger, E., Electron-Attachment Reactions in Molecular Clusters, Chemical Reviews, 92, pp. 1589-1609, 1992.
• [3] Kajdas, C. K., Kulczycki, A., A New Idea of the Influence of Solid Materials on Kinetics of Chemical Reactions, Materials Science, 26, pp. 787-796, Poland 2008.
• [4] Kajdas, C. K., Kulczycki, A., Kurzydłowski, K. J., Molina, G. J., Activation Energy of Tribochemical and Heterogeneous Catalytic Reactions, Materials Science, 28, pp. 523-533, Poland 2010.
• [5] Kulczycki, A., The Correlation Between Results of Different Model Friction Tests inTerms of an Energy Analysis of Friction and Lubrication, Wear, 103, pp. 67-75, 1985.
• [6] Kulczycki, A., Kajdas, C.K., Liang, H., On the Mechanism of Catalysis Induced by Mechano-Activation of Solid Body, Materials Science, 32 (4), pp. 583-591, Poland 2010.
• [7] Kulczycki, A., Kajdas, C., A New Attempt to Better Understand Arrehnius Equation and its Activation Energy. Tribology in Engineering, Chapter 4:. Edited by Hasim Pihtili, Published May 08, 2013, Publisher In Tech, http://dx.doi.org/10.5772/54503, 2013.
• [8] Kulczycki, A., The influence of oxygenates on lubricity of fuels for CI engines, Journal of KONES Powertrain and Transport, Vol. 22, No. 2, pp. 115-120, 2015.
• [9] Ozimina, D., Eksploatacja systemów tribologicznych, Monograph, 48, Kielce 2013.
• [10] Prevenslik, T. V., Nanocatalysts by QED induced EM radiation, 13th Nordic Symposium on Catalysis, Goteborg, Sweden 2008.
• [11] Sułek, M. W, Kulczycki, A., Małysa, A., Assessment of lubricity of compositions of fuel oil with biocomponents derived from rapeseed, Wear, 268, pp. 104-108, 2010.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.