A Computer-Based Air-Fuel Model for Analysing the Performance of Spark Ignition Internal Combustion Engines

Abstract

This paper presents a computer-based air-fuel model that can be used to analyse the performance of spark-ignition (SI) internal combustion engines. Using the model, the performance characteristics of a real engine with conventional and alternative fuel mixtures can be estimated with lower cost and shorter time compared to experimental method. The paper describes the mathematical formulation of the model and outlines the main features of its computer code. The model is verified against published results of earlier fuel-inducted air-fuel models.