EFFECT OF DI DIESEL ENGINE PERFORMANCE WITH METHANOL AS AN ADDITIVE IN DIESEL - BIODIESEL (PPME) BLENDS.

Oxides of nitrogen and particulate matter are the main pollutants in the tailpipe emissions of engines operating with biodiesel as fuel. Experiments were conducted to evaluate the effects of using methanol as an additive with a diesel - biodiesel mixture (DBD100 is 50% diesel and 50% biodiesel in volume) on the engine performance. Methanol added as an additive to diesel-biodiesel mixture by volume percent of 5%, 10% and 15% (DBD85M15). The results of diesel–biodiesel mixture with methanol as an additive in blends compared with diesel. The results could reduce the exhaust gas temperature due to the higher oxygen content and increase heat of evaporation of the blended fuel, hence reduces the HC, NOx emission and soot compared to diesel fuel.