EFFECTS OF USING DUAL FUEL LPG/DIESEL ON THE LUBRICATING OIL INDEXES

Abstract

When converting from a diesel engine using dual fuel LPG/Diesel, the fuel
compositions have been significantly changed, when LPG fuel will be turned into the
vapor or fog droplets when it is put into the engine. It will deposit on the cylinder
wall and can mix with the oil reducing viscosity and other parameters of the
lubricating oil. In addition, factors affecting the indexes of lubricating oil are of such
as temperature, oxidation, contaminated oil and especially the physicochemical
process of diesel fuel and LPG. They have made the oil more diluted. This paper
presents the results of research on the effects of using dual fuel LPG/Diesel on
D1146TI diesel engine on the lubricating oil indexes after 50h, 70h, and 100h
running more stably in compare with the analytical results at 0h. Research results
show that when using dual fuel LPG/diesel engine, the indexes of lubricating oil
are not significantly affected.