ABSTRACT : |
The concept of using alternative fuels with palm oil with ethyl ester blends as supplement to diesel engine is recent experimental one. The scarcity of transportation petroleum fuels due to the fast depletion of the petroleum deposits and frequent rise in their costs in the international market have spurred many efforts to find alternatives. The above selected blends were quickly recognized as one among the prime candidates to displace or replace high octane / cetane petroleum fuels like petrol/diesel. The suitable alternative fuels with ethyl ester and its blends is one of the resources, which is both renewable and biodegradable, there fore using these fuels with methyl ester is causing the fuel injectors as clogging effect especially when in cold conditions there for the selected alternative fuels with its blends should be chemically enriched and make the fuel in to an enhanced properties and it becomes to a biodiesel. In this work an attempt has been made to know the performance and emission characteristics of palm oil ethyl ester and of ethanol or methanol with methyl ester blends and its 25% etc blend with diesel on a direct injection hot surface ignition diesel engine. In this, the ceramic material hot surface ignition method was erupted B A ceramic material is weld inside the top portion of the cylinder chamber. It is connected to the electric circuit ,so that the ceramic surface becomes the red hot surface to ignite the fuel mixture. In this engine the ignition will be occurred by the hot surface in the cylinder, due to the red hot condition of the hot surface the ignition of the blended fuel burns and combustion takes place and thereby the emission of the effluents takes place. Then observing the engine performance on characteristics like BHP, IHP, Indicated thermal efficiency, Break thermal efficiency, specific fuel consumption and the total fuel consumption, exhaust emissions like HC, CO, NO, NO2, smoke emissions, particulate emission. This experiment will be conducted with different blends with 25% etc diesel and conduct the emission analysis by the analyzer; all these results were carried out on a computerized kirloskar single cylinder direct injection hot surface ignition engine. The performance of the same as compared to the diesel fuel and also found that NOx and emissions are quite higher than the diesel fuel. To increase the performance some suitable additives also find out the exhaust gas decrease NOx EGR is also adopted to conduct the above tests are performed with varying percentage of EGR and it has been found that NOx decreases at the same time the engine performance was decreased. |
|