Internal combustion engines at 6 h. H. 4 Indicators and effective indicators of reciprocating internal combustion engines by Bobrovsky B. In. is a unique edition that serves as a real guide to the world of reciprocating internal combustion engines. This work, part of an extensive six-volume cycle, offers readers an in-depth understanding of indicator and performance metrics, making it an indispensable resource for both students and professionals in engineering and automotive engineering. In this book, the author examines in detail the key aspects of piston engines, focusing on their indicator characteristics, which play an important role in assessing the efficiency and performance of engines. Bobrovsky does not just list facts and figures, he immerses the reader in the complex world of thermodynamics and mechanics, explaining how different parameters affect the operation of the engine. The reader will be able to learn how to interpret indicator diagrams correctly, which will allow him to better understand the processes occurring inside the engine. This book will be especially interesting for those who are passionate about cars, mechanics and engineering. Students of technical universities, graduate students, as well as practicing engineers will find here a lot of useful information that will help them in their studies and professional activities. Bobrovsky appeals to the reader with the understanding that many of them may be new to the field, so he tries to explain complex concepts in a simple and accessible language. The topics raised in the book cover a wide range of issues related to the efficiency of internal combustion engines. The author considers the influence of various factors on the indicator indicators, such as temperature, pressure and fuel composition. He also discusses modern measurement and analysis techniques that help engineers optimize engine performance. This knowledge is particularly relevant in light of current trends towards improved environmental friendliness and vehicle efficiency. Bobrovsky's style is distinguished by scientific rigor and at the same time accessibility. He skillfully combines theoretical foundations with practical examples, which makes the material more understandable and applicable. His previous works, such as “Internal Combustion Engines: Theory and Practice” and “Fundamentals of Thermodynamics”, have already established themselves as reliable sources of knowledge in the field of engine building. Bobrovsky is an author who really understands his topic and knows how to convey it to the reader. Internal combustion engines at 6 h. H. 4 Indicators and Effective Indicators of Internal Combustion Piston Engines” will become not only a textbook, but also a reference book for everyone interested in the development of technologies in the field of engine building It will help readers not only to better understand how engines work, but also to understand how their efficiency can be improved, which is especially important in the face of modern environmental challenges. If you are looking for literature on internal combustion engines that combines theory and practice, then this edition is exactly what you need. It will be a great addition to the library of any engineer or student seeking to deepen their knowledge in this fascinating and important field.