automotive

This book is my Bible. It does not explain you how to add 2HP to the engine, it explains how all that works and why, with theory, numbers and serious real world tests.
You may be interested in the theory: you'll find all you need to understand more detailled research papers.
You don't need theory: you may simply trust very comprehensive and clear conclusions which explain with figures and numbers how thinks work.
The book covers Spark Ignited and Diesel engines, indirect and direct injected.
The book does not cover recent works on high speed SI (like Honda VTEC) and turbo-diesel engines, as well the indirect injected stratified combustion engines.

almost all the areas concerning internal combustion engines are covered in proper detail. it is useful for related undergrad and grad studies, also an indispensable reference for grad research work in engine technologies.

Written 10 years ago, the author spent just over a decade to finish this book. Having said that, there are still a lot to learn from this book. I am currently using it as THE textbook of my course (undergraduate and postgraduate).