The Effects of Biodiesel Obtained from Inedible Oils on the Emissions

Abstract

Environmental effects and economic conditions have ledresearchers to find alternative energy sources so that the interest ofbiodiesel production from inedible oils is continue to rise due to its lowprice. Using raw vegetable oil as fuel cannot be evaluated possible due toseveral unfavorable effects. Thanks to the transesterification reaction rawvegetable oil viscosity can be reduced. This study is aimed to investigation ofemissions of B100 waste frying oil methyl ester and B100 crambe abyssinica oil methyl ester. Experimental tests wereconducted to single-cylinder, four-stroke, direct injected diesel engine withair cooling system at 2200 1/min fixed engine speed and with four differentengine loads. The engine loads are (BMEP, 0.12 MPa, 0.24 MPa, 0.36 MPa and 0.48MPa), and at the beginning of the tests, the engine was warmed with No. 2diesel fuel. The oil and inlet air temperatures were kept at 85 ±2 °C and 25 ±1°C, respectively. The results obtained from the experimental study werecompared with No. 2 diesel fuel. The effects of fuels on CO, THC, NOx and smokeemissions were investigated. Brake specific fuel consumption of test fuels wasalso examined. According to the obtained results, B100 fuels can be used as analternative fuel in a diesel engine.