THEORETCAL AND EXPERIMENTAL INVESTIGATION OF SI ENGINE USING GASOLINE AND ALTERNATIVE GASEOUS FUELS

Abstract

Computer simulations of internal combustion engine cycles are desirable because of the aid they provide in design studies to predicting trends serve as investigation tools for providing more data that are normally inaccessible from experiments and help to understand the complex process that occur inside combustion chamber. In the present work a two zone zero-dimensional model has been developed. The governing ODE equations contain cylinder pressure (p), burned temperature (Tb) and unburned temperature (Tu) as main parameters which are solved by using 4th order Runge-Kutta method. For a prescribed fuel the initial conditions required for simulation are equivalence ratio, ignition timing, manifold absolute pressure and engine speed. The model predicts the variation in pressure (p), burned gas temperature (Tb) and unburned gas temperature (Tu) for compression, combustion and expansion phases w.r.t crank angle. The developed model has been validated with the experimental data for gasoline,...