To investigate the friction and wear of recycle engine oil

Zakaria, Ahmad Firdaus (2018) To investigate the friction and wear of recycle engine oil. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This investigation is about to study the friction and wear of recycle engine oil blends with additives X1-R. The objectives of this study are to investigate the viscosity, to study the coefficient of friction and to investigate the wear characteristic of recycle engine oil. There are 5 sample of lubricant which is 100% used engine oil,95% used engine oil + 5% X1-R,90% used engine oil + 10% X1-R, 85% used engine oil + 15% X1-R and 80% used engine oil + 20% X1-R.The investigation for viscosity is conducted by using heated viscometer at 40ºC by following standard ASTM D445 ,for the coefficient of friction is by using Four Ball Tester by following standard ASTM D4712 and for the wear scar characteristics was done by using microscopic testing. The viscosity is show that the thick of the oil, the higher the viscosity the oil will more thick. The result show the higher viscosity is 85% used engine oil + 15% X1-R with value 71.8 cSt. Then, the coefficient of friction shows how the lubricant prevent contact each ball bearing due the less friction produce the high quality of lubricant. The result show 85% used engine oil + 15% X1-R produce less coefficient of friction which is 0.083471.The characteristic of wear it is show the different types of wear occur on the surface of ball bearing.

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