Combustion Modeling of SI Engine for Predicting Behavior of I.C. Engine: A Review

Abstract

Modeling is a process of developing and using the appropriate combination of assumptions and
equations that permit the critical features of the process to be analyzed. Combustion models in I.C Engines
contains a set of equations governing the fluid mechanics, thermodynamic behavior of the engine working fluid
as it passes through the cylinder of an operating engine. The objective of project work is to do combustion
modeling of single cylinder spark ignition engine of bike by using computational fluid dynamics for predicting
the turbulent flame speed at different equivalence ratio and engine speed. Premixed combustion model is to be
considered in this study. The methane gas has been taken as fuel and single oxidation of methane with oxygen to
form carbon dioxide and water vapor. Prediction of turbulent flame speed for premixed combustion is done in
FLUENT software. Results show that turbulent flame speed increases for increment in equivalence ratio and
engine speed.