The Effects of Combination for Biodiesel Fuel and EGR in a D.I. Diesel Engine 18ICES/046
Authors
Youngtaig Oh - Chonbuk National University
Seunghun Choi - Chonbuk National University
Kyusik Kwon - Jeonju University
Abstract
The emission of diesel engine is recognized as the main cause for the serious air pollution related problems affecting our environment. In this study, we studied the potential of biodiesel fuel, which can reduce smoke emission, as an alternative fuel for diesel engine. Because biodiesel fuel has about 10.5% oxygen content the combustion of the diesel engine improved and exhaust smoke emission density decreased especially at high loads and speeds. And, the EGR(exhaust gas recirculation) system has been widely used to reduce nitrogen oxides(NOx) emission. However, as the EGR rate at a given engine operating condition increases, the combustion instability increases. Therefore, the optimum EGR rate should be carefully determined in order to obtain the better engine performance and emissions. This study shows that the simultaneous reduction of smoke and NOx emissions can be achieved by combination of biodiesel blending fuel (20vol-%) and EGR method (5-15%)