Experimental Investigation on The Performance and Emission Characteristics of DEE Fumigation on Diesel Engine Using Methyl Ester Biodiesel

Abstract

Energy demand is increasing due to ever increasing number of vehicles employing internal combustion engines. Also, world is presently confronted with the twin crisis of fossil fuel depletion and environmental degradation. Fossil fuels are limited resources; hence, search for renewable fuels is becoming more and more prominent for ensuring energy security and environmental protection. Biodiesel has been found to be a suitable alternative to fossil fuels. Large number of work has been done to find a suitable blend and other techniques to increase performance of CI engines. However, much remains to be done. newline newlineIt has been observed that use of Methyl ester biodiesel in diesel engines leads to a marginally inferior performance and higher smoke emissions due to their high viscosity and carbon residue. The performance of Methyl ester biodiesel can be improved by injecting a small quantity of diethyl ether (DEE) along with air. The potential of Diethyl ether has been explained clearly by authors. High cetane number fuel increases the process of vaporization of fuels in the combustion chamber resulting in decrease in smoke opacity and increase in NOx emission. The fumigation of secondary fuel and varying the injection timing are the best methods of introduction of alcohol fuel in large quantity in IC engines. Use of DEE addition to diesel fuel and biodiesel increases the BTE in a general trend. newline newlineThe present study was conducted with the main objective to improve the performance, emission and combustion characteristics of a direct injection diesel engine fuelled with Methyl Ester Biodiesel by DEE fumigated at different flow rates. Study was conducted to compare the effect of DEE fumigation (i.e. the addition of DEE to the intake air manifold) and waste vegetable methyl ester bio diesel fuel blends on the performance and emissions of a single cylinder diesel engine. An attempt was made to determine the optimum percentage of DEE that gives lower emissions and better performance. newline newlineA single cylinder diesel engine with rated outpu