Article ID Journal Published Year Pages File Type
614074 Tribology International 2016 12 Pages PDF
Abstract
In this work the performance of graphene based nanolubricant using a 4-stroke IC engine test rig is investigated. A nanolubricant is formulated using graphene nanoflakes and engine oil meeting API 20W50 SN/CF and API 20W50 SJ/CF specifications. The addition of 0.01 wt% graphene to API 20W50 SN/CF results in 23% enhancement in thermal conductivity (k) at 80 °C, and 21% reduction in the coefficient of friction (µ). Moreover, 70% enhancement in heat transfer rate of the engine is also achieved in the presence of graphene. SEM images of the piston rings collected after 100 h of engine operation show that the oil containing graphene (12 nm) decreases the piston wear compared to base oil without graphene.
Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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