PERFORMANCE AND EMISSION ANALYSIS OF POROUS MEDIA COMBUSTION CHAMBER IN DIESEL ENGINES FOR DIFFERENT FUEL BLENDS

Diesel engines, particularly direct injection types, have been an important choice as prime movers in heavy-duty applications such as on-road, off-road, marine and industrial usage due to their high brake thermal efficiency. The fuel economy and exhaust emission regulations, new technologies, development time and cost reduction require increasingly sophisticated solutions to improve the diesel engine performance and reduce exhaust emissions. In this paper we have analyzed the combustion and emission performance of a diesel engine with a porous media for different blends of fuel. The porous media is placed inside the combustion chamber and the different blends include 80% diesel, 15% palm biodiesel and 5% additive. The additives considered in this research are ethanol, n-butanol and diethylether. The simulation studies were conducted using a modified KIVA- 3V code and the results show an appreciable improvement in the performance in terms of combustion and emission for the engines fitted with a Porous Media.