Mathematical Analysis of Thermodynamic Model to Predict the Engine Parameters

Abstract

To Predict the thermodynamic performance parameters SI engine two zone thermodynamic simulation model was developed. The Engine performance and thermodynamic parameters was predicted using first order mathematical ordinary differential equations such as peak pressure, burned gas temperature, unburned gas temperature, heat transfer, heat leakage, heat flux and Adiabatic flame temperature. The Fuel is specified by the way of C-H-O-N Values, the equilibrium state of combustion products was determined by olikara and borman method. The model was developed for Air cooled, single cylinder, 4 stroke SI Engine with variable compression ratio of 6-8. Curve fit Co-efficient are used to simulate air and fuel data along with residuals. Thermodynamic parameters are plotted with respect to crank angle. The objective of this work was to study the thermodynamic, performance parameters of SI Engine using various mathematical models.