The collection publishes works devoted to the study of automotive turbochargers and their elements. The first article deals in detail with the issues of non-motor tests of turbochargers, stands and equipment for removing the characteristics of the supercharger iturbine . The possibility of determining the . p. d. turbocharger by temperature measurement. In the second, on the basis of experimental studies and theoretical analysis, dependences are presented for the evaluation of the turbocharger by the degree of the heater from the turbine and recommendations are given to exclude this phenomenon. In the third, the influence of the thickness of the output edges of the blades of the radial turbine input devices is investigated, the value of losses in the nozzle devices and the flow of kinematics. Calculated formulas are given to determine these losses. In the last article, the results of the study of the turbocompressor bearing assembly by alloying rotating sleeves are considered. Calculated formulas for determining losses in bearingsslip, derived on the basis of experimental research and theoretical analysis.