Experimental investigation of the effect of tribological performance of reduced graphene oxide additive added into engine oil on gasoline engine wear

IF 1.8 4区工程技术 Q3 ENGINEERING, CHEMICAL

Lubrication Science Pub Date : 2022-10-11 DOI:10.1002/ls.1627

Emrullah Hakan Kaleli, Selman Demirtaş

引用次数: 1

Abstract

Good dispersion stability of engine oil added with graphene is the premise of playing its superior tribology property and also the novelty of this study. As the tribological behaviour of a commercialised, fully synthetic 5W40 engine oil upon the incorporation of reduced graphene oxide in sample (0.02 wt%) like (5W40 engine oil + 0.02 wt% Reduced Graphene Oxide) called rGO6 presented superior tribological properties by exhibiting the lowest COF value in our previous work, the same sample was evaluated through a reciprocating tribometer, using steel ball (100 CR6) on a real polished gasoline engine cylinder liner with 5W-40 engine oil to investigate their wear and friction behaviour in boundary lubrication regime. It was found that a rGO6 nano-additive played an active role in lowering the coefficient of friction (3.29%) and increased surface protection by forming a protective layer on a smooth nanorough on rubbing surfaces.

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机油中添加还原氧化石墨烯添加剂对汽油机磨损影响的实验研究

添加石墨烯的机油具有良好的分散稳定性是发挥其优异摩擦学性能的前提，也是本研究的新颖之处。商业化的全合成5W40发动机油在样品中掺入还原氧化石墨烯（0.02 wt%）类似（5W40发动机油 + 0.02 wt%还原石墨烯氧化物）rGO6通过表现出最低的COF值而表现出优异的摩擦学性能。在我们之前的工作中，通过往复式摩擦计对同一样品进行了评估，在使用5W‐40发动机油的真实抛光汽油发动机缸套上使用钢球（100 CR6）来研究其在边界润滑状态下的磨损和摩擦行为。研究发现，rGO6纳米添加剂在降低摩擦系数（3.29%）方面发挥了积极作用，并通过在摩擦表面光滑的纳米粗糙面上形成保护层来增加表面保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL

CiteScore

3.60

自引率

10.50%

发文量

审稿时长

6.8 months

期刊介绍： Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.