Preface

Improving efficiency and reducing emissions of internal combustion engines, especially for transportation applications, are critical for the sustainable development of our world. Internal combustion engines with a downsized design can reduce engine size and improve fuel efficiency thanks to the turbocharging technique and electronic control system, which has great potential for passenger vehicles. The energy efficiency can be enhanced and emissions can be decreased by optimizing critical working parameters such as fuel injection and ignition timing. Meanwhile, biodiesel is produced from renewable biomass. Exploring the performance potential of biodiesel fuel provides another promising approach to replace petroleum fuel. With the help of advanced software and testing equipment, methodologies for system design and optimization of internal combustion engines are being developed. Rapid progress in computer-aided design and manufacturing technology makes it possible to design novel engine systems and reduce emissions significantly.

This book on internal combustion engines and applications of biodiesel fuel includes seven chapters on engine system design, fuel injection system analysis, ignition performance, fuel consumption estimation, application of biodiesel in engines, and more. In practice, these aspects must be considered together to maximize the potential of an internal combustion engine. The chapters are organized into two sections. The first section covers engine downsizing, fuel spray, and economic comparison. The second section deals with applications of biodiesel fuel in compression-ignition and spark-ignition engines.

A comprehensive analysis of the technology and application of the internal combustion engine is beyond the scope of the book. However, the content of this volume is useful for scientists and students to broaden their knowledge of internal combustion engine technologies and applications of biodiesel fuel.

I would like to thank IntechOpen for inviting me to be the editor of this volume, Ms. Maja Bozicevic, and the Publishing Process staff for their help in coordinating the reviews, editing, and printing of this book.

> **Enhua Wang** School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China

Section 1

Internal Combustion Engine

Technology

**1**

Section 1
