Comparing the Performance and Combustion Characteristics of DI Diesel Engine using Emulsified Fuel at Different Nozzle Spray

In this present work, experiment has been conducted in phases I, II categories. In phase I, 50D: 50E (50 Diesel: 50 Ethanol - 100% Proof), 60D: 40E and 70D: 30E have been prepared under water - in - oil type emulsion preparation method and the results have been compared with neat diesel fuel. After identifying the best fuel ratio, it passes to phase - II. In phase - II, the selected fuel has been sprayed in to different fuel injection nozzles of 18°, 20°, 23° and 24°. After that the performance and emission tests have been carried out. The out come result shows better performance and less emission have been given by the fuel 50D: 50E at 24°. Further the ignition delay, the maximum heat release and peak combustion pressure tests are conducted. Also P - θ diagram is drawn between crank angle Vs cylinder pressure. The maximum value is attained by the emulsified fuel ratio 50D: 50E at 24° fuel injection angle. All the tests have been conducted by maintaining the engine speed at 1500 rev/min. The result shows that 50D: 50E emulsified fuel has been identified as a good emulsified fuel and its better operation is obtained at 24° fuel injection spray angle based on its best performance and less emissions.