This thesis describes a simulation program of gas exchange process in a 4-stroke S.I engine and also studied the relationship among various engine parameters under various engine speed and load conditions.
This simulation program include the mathematical model for the gas exchange process and the its formulation and evaluate the system characteristics -for example: inlet mass, pumping work and residual gas in the cylinder-a great influence on power output, fuel economy and exhaust emission.
In order to evaluate the accuracy of the simulation program predicted results were compared with the experimental data obtained on the 4- stroke, 4- cylinder engine and satisfactory agreement was obtained.
