An Experimental Contribution to Investigate the Effect of Using Syrian Mineral Oil on the Wear of Gasoline Engine Parts Compared to Synthetic Oils

Abstract

Abstract

The public sector relies exclusively on Syrian engine oils produced from the oils blending plant in the Homs Refinery Company, according to the communication of the presidency of the council of ministers, which includes the oil drain intervals (ODI) for machinery, stationary, gasoline and diesel engines, according to specific standards. Therefore, it is extremely important to study the impact of their use on the wear of engine parts.Tow test platforms included two generator sets operated by gasoline engines with identical technical and design specifications. They were operated under the same investment, ambient and climatic conditions at the same time. Both engines were filled with (SAE10W40 API: SL/CF), but the first engine was filled with synthetic oil and another with Syrian mineral oil (Deluxe). Both platforms were operated with different loads in two different stages, the first with a constant load of 50% of rated power for up to 900 working hours, then the second with variable loads according to an automated schedule for up to 1200 working hours. ODI was taken every 100 working hr.Used oil samples were taken to analyze the physical, and chemical characteristics and metal/element wear to investigate the effect of both oils on the engine parts wear.

The used oil analysis (UOA) results were drawn that showed the superiority of the use of synthetic oil over mineral oil, due to the decrease in the content of the studied wear metals on average by the following percentages respectively: for iron 33%, for copper 25.5%, and 29%, which prolongs the technical engine life.

Keywords: Synthetic Oil, Mineral Oil, Used Oil Analysis (UOA), Internal Combustion Engine (ICE), Parts Engine Wear.