The book "Fundamentals of theory and calculation of volumetric hydromachines with phase regulation" by B. Engel is a unique publication that will become a reference book for anyone interested in hydraulic systems and their application in various industries. This work not only deepens the understanding of the principles of operation of volumetric hydraulic machines, but also offers readers modern methods of their design and calculation. In this book, the author examines in detail the theoretical foundations underlying phase-controlled hydraulic machines. Engel, with extensive experience in the field of hydraulics and mechanics, shares his knowledge and experience, which makes the book a valuable resource for both students and professionals. Readers will be able to learn about the principles of operation of various types of hydraulic machines, their design features and application in real conditions. The author focuses on the importance of phase regulation, which allows to optimize the operation of hydraulic systems and increase their efficiency. This book will be of interest not only to engineers and specialists in the field of hydraulics, but also to students of technical universities who seek to deepen their knowledge in this field. If you study mechanical engineering, energy or other related disciplines, the "Fundamentals of theory and calculation of volumetric hydraulic machines with phase regulation" will be an indispensable assistant for you. It will help you not only to master the theory, but also to learn how to apply the knowledge gained in practice. The topics raised in the book cover a wide range of issues related to the design and operation of hydraulic machines. Engel discusses not only the theoretical aspects, but also the practical challenges faced by engineers in their work. The book contains many examples and calculations, which allows the reader to better understand the material and apply it in their projects. Particular attention is paid to modern technologies and methods, which makes the publication relevant in the context of the rapid development of science and technology. The author's style is distinguished by clarity and accessibility of presentation. Engel is able to explain complex things in simple language, which makes his book understandable even for those who are just beginning to get acquainted with the topic. His experience and professionalism are felt on every page, which gives the book added value. In. Engel is also known for his other work in hydraulics and mechanics, which confirms his status as an expert in the field. If you are looking for literature on hydraulics, machine design or just want to expand your knowledge in this area, then "Basics of theory and calculation of volumetric hydraulic machines with phase regulation" is exactly what you need. The book will be a great addition to your library and help you become a more competent specialist. Do not miss the opportunity to get acquainted with this outstanding work, which combines theory and practice, as well as opens new horizons in understanding the work of hydraulic machines. Your career and knowledge will benefit from reading this book!