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Proposing a nano-approach to modify viscosity behavior of SAE 5W50 as light road vehicles lubricant |
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| Authors: | Hemmat Esfe Mohammad Esfandeh Saeed Rostamian Hossein |
| Institution: | 1.Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran ;2.Department of Mechanical Engineering, University of Kashan, Kashan, Iran ;3.Faculty of Chemical, Petroleum and Gas Engineering Semnan University, Semnan, Iran ;4.University of Applied Science and Technology, Center of Chloran Chemical Production Company, Semnan, Iran ; |
| Abstract: | In this paper, viscosity of MWCNT (%50)–TiO2 (%50)/5W50 is investigated in temperature range of 5–55 °C, solid volume fractions of 0.05%, 0.1%, 0.25%, 0.5%, 0.75% and 1%, and shear rate range of 666.5–10,664 (s?1). Experimental results showed non-Newtonian behavior of enriched nano-engine oil. Nano-engine oil viscosity reduction (compared to 5W50 base oil) in some specific temperatures and solid volume fractions is one of the unique and interesting results of this research. Maximum viscosity reduction (??11%) occurred in 15 °C and solid volume fraction of 0.05%, and maximum viscosity enhancement (+?17%) was observed in 25 °C and solid volume fraction of 1%. The main goal of present study is to control viscosity increase of nanofluid after adding nanoparticles to the oil. Modeling and prediction of results were achieved via RSM and ANN methods. |
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