Frictional Behavior Of SK11 In Engine Oil And Nanoparticles-Enhanced Engine Oil

Mat Abas, Nur Hafizah (2017) Frictional Behavior Of SK11 In Engine Oil And Nanoparticles-Enhanced Engine Oil. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This final report describes the purpose of the study which to investigate the frictional behavior of SK11 ball bearing in lubricating oil. The frictional behavior was investigated using Four-ball Tester according to the standard test ASTM D4172 as reference. The ball bearings were immersed in two different lubricant condition; engine oil and nanoparticle-enhanced engine oil. Each tests were conducted under varying load and speed, with 100, 300, 500 N and 100, 300, 500 rpm respectively. The tests were undergone under different temperatures which are 27, 50, and 100˚C and the running time was approximately 60 minutes. The investigation was carried under different parameters in order to study which lubricant conditions give significant effects to frictional behavior of SK11 ball bearing and to see the effectiveness of additives when parameters were varied. The nano oil was prepared by dispersing a mixture of approximately composition 0.5 vol.% of 70nm hexagonal boron nitride, hBn with SAE 15W-40 engine oil as base oil. The mixing method used was sonication technique. Based on the results obtained, the varied parameters are compared in term of coefficient of friction and it was then analyzed to see which lubricant conditions possess a better value in coefficient of friction.

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