Combustion engineering is the field of study that deals with the process of burning fuels and the resulting energy conversion. One important topic in this field is the changing fuel landscape, where there is a focus on reducing emissions and increasing efficiency.This book aims to provide an overview of some of the latest developments in combustion engineering, particularly looking at the chemical reactions involved in burning fuels and the resulting emissions. It also covers recent advances in combustion processes and how they fit into the current energy and transportation landscape. The book covers a wide range of topics related to combustion, from the basic science of how flames burn to the practical application of combustion processes in energy conversion. It also explores different methods for controlling emissions from combustion processes, both active and passive. This book is a valuable resource for anyone interested in the latest developments in combustion engineering.