The Study on the Effects of Lubricant using Gasohol 95 as Fuel

Abstract

       This research objective was to study the effects on lubricant using Gasohol 95 as the fuel.  A small four-stroke one-cylinder gasoline engine was installed with Alternator connected with the electric load, functioning as the engine working load.  The engine abrasion was tested according to the Standard 200-Hour Screening Test for Alternative Fuels (EMA 200-Hour Test), by collecting the samples of the engine lubricant before the test, and after the test at 20, 100 and 200 working hours, respectively, for the lubricant effect study of the engine.

      The results revealed that, at the 200 working hours the water content, the soot, oxidation and nitration values of the lubricant were higher than the others. It found that the water content and the soot mixed in the lubricant with the amount 0.145 %wt and 0.3 %wt respectively, which was all in the control criteria. However, the oxidation and nitration were higher than the control criteria. For the metal amount, it was found that, at 100 working hours, the quantity of iron and aluminum in the lubricant was 84.155 ppm and 74.495 ppm respectively which was higher than the others working hour. For the effect on the engine, the increasing of water content and the soot rarely affected to the lubricant and engine because the amount of both water content and soot were still under the control criteria. However, the oxidation and nitration which were higher than the control criteria could deteriorate the lubricant causing the engine wear. Moreover, the metal in lubricant could cause the abrasive wear to the engine parts.