EXPERIMENTAL INVESTIGATION ON CI ENGINE USED FOR WATER PUMP SET WITH A BLEND OF NON-EDIBLE VEGETABLE OIL AND ADDITIVE AS A STRAIGHT FUEL

Abstract

Gradual depletion of world petroleum reserves, and their impact on environmental pollution has motivated the scientific community to wards suitable alternative fuels for internal combustion engines. In the present work experimental investigations were carried out on the diesel engine operated on blends of non-edible oil. Blended fuel samples prepared by blending cotton seed oil (CO), jatropha oil and castor seed oil with gasoline and kerosene in steps of 3% of base oil. Out of these blended fuel samples, one sample of CO blended with gasoline and another sample CO blended with kerosene selected for further performance and smoke test. CI engine fueled with diesel operated for 10 hours and simultaneously performance and smoke emission tests were conducted. The procedure repeated with selected samples of cotton seed oil blended (COB) fuel. After each fuel operation engine piston, cylinder head, and valve and valve seating were orally observed for soot deposition. It was found that the soot deposition on piston, cylinder head and valve for both blended vegetable oil operation found to be minimal and comparatively higher than diesel fuel operation. BTE of both blended fuel with gasoline and kerosene is less compared to standard diesel (COB with gasoline by 4.68% and COB with kerosene by 5%). BSFC of both blended fuels is more compared to that of diesel. BTE of engine fueled with CO blended with gasoline was slightly superior (by 0.32 % at 80% load) compared to CO blended with kerosene. Whereas BSFC for both blended fuels are almost same at 80% load but more than diesel (by 5.8% at 100% load). The reasons could be that the blended vegetable oil being common the properties of kerosene and petrol had the bearing on the performance. The smoke emission is higher for both blended fuels compared to diesel could be due to incomplete combustion.