BIODIESEL AS A LUBRICITY ADDITIVE FOR DIESEL FUEL

Abstract

Sulfur in diesel fuel will influence particulate matter emission either in exhaust gas
flow or in atmosphere. The other effect of sulfur it can cause corrosion and engine wear.
Further, sulfur also can influence on catalytic system in exhaust pipe. Due to this reason
sulfur level in diesel fuel should be set as lower as possible. The process can be used to
reduce sulfur level is desulfurization process (hydrotreatment). At the hydrotreatment to
desulfurize diesel fuel, lubricity can decrease, it is cause by reduction of fuel components
which have good natural lubricity.
Lubricity, is very relevant to the satisfactory operation of diesel fuel engines which
relay on the fuel to lubricate many of the moving and rubbing metal parts of the fuel
injection equipment. Some injection equipment may be at risk if operated on fuels of low
lubricity.
Biodiesel as results of transesterification has a good lubricity, the test results of adding
biodiesel into a lower lubricity of diesel fuel indicate that biodiesel can be used to increase
diesel fuel lubricity.