Numerical Simulation of Combustion Process of Biodiesel and Diesel Blending in a Compression Ignition Engine

At this study combustion process of biodiesel and diesel blending was simulated with a thermodynamic model in a direct injection diesel engine. Different mixtures of biodiesel and diesel (B00, B20, B40, B60, B80 and B100) examined at maximum torque revolution and at full load on engine. Heat release rate simulated via double wieb’s function and heat transfer rate via experimental woschni model. Specific heats of biodiesel compounds (ethyl stearate, ethyl palmitate, ethyl oleate and ethyl linoleate) are determinedat confine of temperature of combustion chamber by means of quantum chemistry calculations and using the Gaussian 98 and Gaussian 03 softwares. Theoretical and experimental results for heat release rate and heat transfer rate was compared and was observed a good agreement between its.