Effect of Some Turkish Vegetable Oil-Diesel Fuel Blends on Exhaust Emissions

Abstract

For different types of vegetable oils of Turkish origin (sunflower, com, soybean, and olive oil) were blended with grade No. 2-D diesel fuel at a ratio of 20/80 (v/v). The effect of the compression ratio on exhaust emissions is investigated in an American Society for Testing and Materials (ASTM)-cooperative fuel research (CFR) engine working with the mentioned fuel blends and a baseline diesel fuel. A decrease in soot, CO, CO₂, and HC emissions and an increase in NO_x emissions have been observed for fuel blends compared to diesel fuel.