Effect of Injection Pressure on the Performance and Emission Characteristics of C I Engine Using Jatropha Curcus as Bio-diesel with Sc5d Additive

The depletion of world petroleum reserves and the increased environmental concerns have stimulated the search for alternative sources for petroleum-based fuel, including diesel fuels. Because of the closer properties, biodiesel fuel from non-edible oil is considered as the best candidate for diesel fuel substitute in diesel engines. With increasing demand on the use of fossil fuels, stronger threat to clean environment is being posed as burning of fossil fuels is associated with emissions like CO2, CO, HC, NOx and particulate matter and are currently the dominant global source of emissions. The harmful exhaust emissions from the engines, rapid increase in the prices of petroleum products and uncertainties of their supply have jointly created renewed interest among the researchers to search for suitable alternative fuels. Transesterified non-edible oils (biodiesel) are promising alternative fuel for diesel engines. Experimental investigation has been carried out on the effect of injection pressure on the performance and emission characteristics of C I Engine using Jatropha Curcus as bio-diesel with SC5D Additive. The properties of JME thus obtained are comparable with ASTM biodiesel standards. Tests are conducted on single cylinder four stroke water cooled compression ignition engine to evaluate the feasibility of blends of JME with SC5D Additive. Our studies indicate that J20 with SC5D Additice is the best blend among all other blends. The performance of J20 with SC5D Additive shows less specific energy consumption and highest break thermal efficiency. As the amount of JME blend with SC5D Additive increases the HC, CO, smoke density in exhaust decreases.