RESPONSE SURFACE METHODOLOGY BASED OPTIMIZATION OF WASTE COOKING OIL BIODIESEL WITH DIESEL ENGINE FOR DECREASE OF EXHAUST EMISSIONS FROM AIR POLLUTANT ELEMENTS

Abstract

The studies were performed on single-cylinder, four-stroke, water cooled, direct injection diesel engine. In this study it was aimed to optimize using RSM, performance parameter (responses) (brake torque) and exhaust emissions hydrocarbons (HC), carbon monoxide (CO), nitrogen oxide (NO.) and smoke a diesel engine which operates with WCOB-diesel blends of 0%, 30%, and 60%. The engine tests were conducted at increasing engine speeds from 1400 rpm to 2200 rpm and under full load. It was assignment the value of two factors which affect the responses by desirability function. An engine speed of 1909 rpm and a blend of 48% biodiesel were found to be optimal values. The results of this study revealed that at optimal responses, the values of the brake torque, and HC, CO, NOx and smoke were found to be 49.96 Nm, 6.92 ppm, 0.1582%, 2151.74 ppm and 56.87% respectively, with a desirability value of 0.915. The performance parameter was identified to be very close to diesel fuel. The emissions except for NO. such as HC, CO and smoke were found to be lesser in quantity than diesel fuel.