Complete heat balance, performance, and emission evaluation of a CI engine fueled with Mesua ferrea methyl and ethyl ester's blends with petrodiesel

In this investigation, blends of Mesua ferrea methyl esters (FAME) and ethyl esters (FAEE) with petroleum diesel were used for complete thermal analysis (heat balance) in a computerized compression ignition engine at variable load and at different compression ratios (CR 15 and CR 18). In addition to heat balance, performance parameters like brake thermal efficiency and brake-specific fuel consumption of the CI engine fueled with biodiesel and blends were also investigated. The emissions analysis viz. CO, CO2, HC, NOx, and O-2 were measured using an AVL DiGas 444 analyzer. It was observed that the work done was increasing with the increase in load and to some extent with the increase in CR and blending ratio. At CR 18, FAEE-B10 showed the maximum 29.3 % useful work, while diesel showed only 26.3 % at full load condition. At highest load and CR 18, HC, NOx, and CO2 emissions were found to be lesser than that from the petroleum diesel, and among all the blends, FAEE-B10 was found as a better substitute for diesel engine.