Effect of operating parameters and antioxidant additives with Palm-biodiesels to improve the performance and diminishing the emissions in a compression ignition engine

Abstract

In modern world, the usage of biodiesels is increasing day by day. Biodiesel is found to be a substitute for diesel besides it is a clean fuel and a renewable source of energy. Slowly, biodiesel gained global attention in today's world. The present study is a work on palm oil and diesel blends. 20% blend of palm oil and diesel is prepared and tested in direct injection diesel engine at standard injection timing of 230 bTDC. The BTE and BSFC of POME20 are 33% and 0.26 kg/kWh at full load. Further POME20 is also tested at advanced injection timing of 270bTDC. The BTE of POME20 at 270bTDC is 34% and NOX emissions are 2400 ppm. The results shown POME20 at advanced injection timing has better BTE compared to POME20 at standard injection timing. But the NOX emissions are found to be high at advanced injection timing. When higher alcohol 1-butanol is added to POME20 at advanced injection timing of 270 bTDC NOX emissions decreased as concentration of 1-butanol is increased. NOX outflow decreased by 5.23% and 8.7% for POME20-1B20 and POME20-1B30 when compared to POME20 at advanced injection timing. BTE decreased when higher alcohol is added to blends. BTE decreased by 2.7% and 4.6% for POME20-1B20 and POME20-1B30 when compared to POME20 at advanced injection timing for peak pressure condition. In this study finally concluded from the result 1-butanol additive with diesel give lowest emissions than diesel