We sincerely hope that this book can also be used as reference material for the teaching fraternity. We hope that the book is complete in all respects. However in any case, if it lacks certain information, authors may be contacted for constructive comments This book is divided in 8 chapters starting from basics of internal combustion engine to advancement and recent trends in IC Engine. This book is the outcome of many years of teaching of Advanced IC Engine subject and it is intended to serve as a reference for researchers and engineers. Salient Features · The subject matter is arranged sequentially and presented in a very simple and systematic manner. · Review questions are given in each chapter to help the students for their examinations. Each chapter of the book contains suitable diagrams with clear explanations. A large number of worked out examples are provided in Testing of IC Engine Chapter.