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http://dx.doi.org/10.7837/kosomes.2016.22.2.240

Rheological behavior study of Marine Lubricating oil on the amount of MGO (Marine Gas Oil) dilution  

Song, In Chul (Ministry of Public Safety and Security Korea Coast Guard Research Center)
Lee, Young Ho (Ministry of Public Safety and Security Korea Coast Guard Research Center)
Yeo, Young Hwa (Ministry of Public Safety and Security Korea Coast Guard Research Center)
Ahn, Su Hyun (Ministry of Public Safety and Security Korea Coast Guard Research Center)
Kim, Dae il (Ministry of Public Safety and Security Korea Coast Guard Research Center)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.22, no.2, 2016 , pp. 240-245 More about this Journal
Abstract
This paper describes the rheological behavior study such as viscosity and change of shear stress regarding marine lubricating oil according to the amount of Marine Gas Oil (MGO) dilution. The viscosity reduction due to fuel dilution is crucially important characteristic to decreasing engine durability because of the abrasion of piston ring or liner. The lubricating oil used in this paper was blended with magnetic stirrer diluted High Sulfur Diesel (HSD, 0.05 wt%) ratio of 3 %, 6 %, 10 %, 15 % and 20 %. The viscosity and shear stress of diluted lubricating oil were measured with the temperature range from $-10^{\circ}C$ to $80^{\circ}C$ using a rotary viscometer (Brookfield Viscometer). As the amount of MGO dilution increasing in lubricating oil, the viscosity and stress of those decreased, because the lubricating oil diluted MGO with low viscosity show the trends to decreased viscosity and shear stress. Especially, the viscosity and shear stress of lubricating oil radically decreased at low temperature ($0{\sim}-10^{\circ}C$) and doesn't effect in MGO dilution at over $40^{\circ}C$. As temperature risen, the reduction of the viscosity and shear stress in lubricating oil shows the Newtonian behavior. The lubricating oil was required to check up periodically to improve engine durability since the viscosity reduction by MGO dilution accelerating the engine abrasion.
Keywords
Amount of MGO dilution; Lubricating oil; Viscosity; Shear stress; Rheological behavior;
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Times Cited By KSCI : 2  (Citation Analysis)
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