Effect Of Fuel Temperatures on Performance and Emission Characteristics of HCCI Mode Diesel Engine Fueled with Diesel and B20 Biodiesel Diesel Blend

The density and viscosity of jetropha oil were reduced by heating it using induction coil heater. The lower injection pressure at elevated temperature helps in better spray characteristics which in turn improves combustion of fuel inside the combustion chamber. Experiments were conducted to evaluate combined effect of injection pressures and temperatures on performance and emission characteristics of diesel engine. Due to preheating the ignition delay was shorter and the higher rate of pressure rise was higher which led to slight increase in break power than diesel and crude jetropha oil the reduction in carbon dioxide, hydrocarbon, nitrous oxide emissions were observed for preheated fuel. Thus, injecting the fuel at suitable temperatures and pressures lead to reduction in exhaust emissions with slight or no effect on engine break power.