The book "Internal Combustion Engines and Gas Generators: A Practical Treatise Defining the Principles of Gas Engine and Generator Design, Engine Selection and Installation, Conditions for Perfect Operation, Gas Engines and Their Capabilities, Care by Rodolphe Edgar Mato. In this book, the reader will be able to get acquainted in detail with the principles of operation of gas engines and gas generators, as well as with important issues of selection, installation and optimal use of such equipment. The author describes in detail the possibilities of using gas engines and their advantages, considering their role in modern technology and industry. In addition, the book deals with the care of the specified equipment, which will help ensure its long-term and efficient working process. "Internal combustion engines and gas generators" is a valuable reference book both for specialists in the field of mechanical engineering and industry, and for all those interested in modern technical solutions in the field of energy and transport.