A Comparative Study on the Tribological Properties for the Automobile Oil Regeneration

Abstract

Not only fatigue of the metal materials but also inferior quality of the lubricant oils will be occurred for the machines after the long-term operation. Therefore, the self-developed reciprocating friction tester with the measurement system was used to experimental study the tribological properties for the automobile oil regeneration in this study. The major parameters are the reciprocating speeds and the three types of the oil. The ball specimens were made of SUJ2 and the plate specimens were made of SUS304. The variations of friction coefficient and electrical contact resistance were simultaneously recorded during dynamic friction process. After each friction test, the OM was used to observe the worn surface. According to the experimental results, the differences between the new oil, the old oil and the regeneration oil can be clarified. The viscosity, density and color were quite similar for the old oil and the regeneration oil. However, the tribological properties of the regeneration oil were significantly improved. Moreover, it also showed stable during the dynamic friction tests. Even compared with the new oil, the regeneration oil sometimes showed better lubrication under the operation conditions. The wear resistance of the regeneration oil does show great potentials.