Abstract: The purpose of the study is to substantiate the possible design of a counter-pressure device for fuel injection, intended for modernization of adjusting stands of diesel fuel injection equipment. The factors influencing the fuel supply parameters are analyzed and, taking them into account, the design and method for calculating the counter-pressure device for injection and regulation with its use of fuel injection equipment are developed. The distinctive feature of the proposed device is that the injection of fuel comes into the chamber where the counter-pressure is created by the injected fuel itself and the adjusting parameters of the fuel supply are calculated from the pressure in the injection chamber using a computer and the electronic unit operating under the proposed program.