This publication deals with fuel injection techniques in diesel engines. The book explains each important aspect of the many designs of high-pressure fuel pumps and their components, such as the housings of these pumps and pressure valves, as well as the penetration into the principles of their operation. The sections of the book are devoted to speed regulators and automatic control and control systems, a description of functional modes, such as limiting the intermediate and maximum speed, structural types of fuel injection pumps and operating principles. Explanations are also given of the design and operation of such important components of diesel fuel supply systems as nozzles and atomizers of nozzles. A separate chapter also describes the methods for testing and adjusting the elements of diesel fuel systems and provides detailed explanations of the principles of operation of diesel electronic control systems (EDC).