This study concentrates on enhancing the performance of the gasoline engine through nano-lubrication. The effect of Graphene nano-platelets (GNP) as lubricant additives in SAE 15W40 oil on the fuel energy consumption and piston ring wear is investigated. GNP-filled lubricating oil boosted the brake strength, engine torque, and mechanical efficiency, whereas the gasoline engine’s brake specific fuel consumption (BSFC) decreased by 5.3%–6.5% due to a 1.7%–3.46% improvement in engine mechanical efficiency. Further, emission results showed that the GNP-filled lubricating oil reduced the emissions of the engine by approximately 3%–6% as compared to the virgin lubricating oil. Furthermore, the piston ring wear was found to reduce by using GNP-filled nano-lubricant. The characterization of the worn piston ring surfaces showed that the tribo-film formed on wear tracks resulted in the improved performance of the engine thereby reducing abrasive wear and surface roughness. From these studies, an attempt has been made to co-relate engine performance characteristics with tribological perception to contribute in the direction of energy savings and fuel economy.

本研究的重点是通过纳米润滑提高汽油发动机的性能。研究了石墨烯纳米片 (GNP) 作为 SAE 15W40 油中的润滑剂添加剂对燃料能耗和活塞环磨损的影响。填充 GNP 的润滑油提高了制动强度、发动机扭矩和机械效率，而汽油发动机的制动比燃料消耗 (BSFC) 由于发动机机械效率提高 1.7%–3.46% 而下降了 5.3%–6.5%。此外，排放结果表明，与原始润滑油相比，填充 GNP 的润滑油使发动机的排放量减少了约 3%–6%。此外，发现使用填充 GNP 的纳米润滑剂可以减少活塞环磨损。磨损的活塞环表面的表征表明，在磨损轨迹上形成的摩擦膜导致发动机性能的提高，从而减少了磨料磨损和表面粗糙度。从这些研究中，已尝试将发动机性能特征与摩擦学感知相关联，以促进节能和燃油经济性。