Study performance and emission characteristics in high speed diesel engine when using biodiesel from chicken tallow

Abstract

        This research was to investigate the performance of diesel engine when using blended fuels from the biodiesel from chicken tallow and diesel as fuels. The blending ratios between diesel and biodiesel from chicken tallow were 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70, 20:80, 10:90 and 0:100 by volumetric. The physical properties of the blended fuels were compared. Which the results shown that ratio of 90:10 (diesel: biodiesel) was close similarity properties to diesel 100%. The performance of diesel engine was tested using each of the above fuel blends, with diesel engine, 4 – cylinder, 2,188 cc. and brand TOYOTA type LN-40. The results shown that the torque and brake power when using blended fuel were 3.86 - 8.97 % and 4.69 - 11.48 % less than those of diesel 100% respectively. The specific fuel consumption when using blended fuel was 1.75 – 22.65 % higher than that using diesel 100%. The results of emission, the carbon monoxide (CO) and carbon dioxide (CO2) from engine when using blended fuel were 15.58 – 28.15 % and 7.28 – 17.46 % less than those of diesel 100% respectively ; on the other hand, nitrogen oxide (NOx) were higher about 2.36 - 11.82%. The smoke of engine when using blended fuel was less than that using diesel fuel.