Fundamental Combustion Modes

Abstract

This chapter provides essential background information regarding the combustion processes in spark ignition engines, diesel engines, and engines that are under development worldwide employing various forms of low temperature combustion [e.g., homogeneous charge compression ignition (HCCI), controlled autoignition (CAI), premixed charge compression ignition (PCCI)]. These three types of engines are characterized by three different dominant modes of combustion: premixed flames, diffusion flames, and volumetric energy release. These three modes of combustion are covered in sufficient detail so that the reader should have the background knowledge that allows understanding of the combustion processes in the chapters that discuss these types of engines in depth.

Development of a fractal engine simulation model in a multidimensional simulation for the cold start process of a gasoline direct injection engine

“…The FES model has been tested and verified from different experimental measurements, and proves a promising model for the turbulent combustion category of laminar flamelets, 5,6 wherein the flames within SI engines fall for most operating conditions. 7 Before carrying out the FES model, we tried to use the SAGE detailed chemistry model. 8 The SAGE model tracks the flame front propagation by solving the local chemical kinetics, and has been successfully applied to engine simulations for many different conditions.…”

“…The FES model has been tested and verified from different experimental measurements, and proves a promising model for the turbulent combustion category of laminar flamelets, 5,6 wherein the flames within SI engines fall for most operating conditions. 7…”