Експериментальне устаткування для дослідження автомобільних пневматичних двигунів

Abstract. The author (in co-authorship) modernized the motor stand for the study of the working processes of pneumatic engines (PE), designed for use in road transport as part of a combined power plant. The measuring equipment of the stand allows for: measuring PE parameters without heating and with heating of compressed air at the inlet; mea­suring PE indicator diagrams using special sensors; processing experimental data using a personal computer and special software; To determine the load force Pn on the stand, the KODA-2 weighing terminal is used, designed to measure the analog signal of the sensitive element of strain gauges with the display of measurement results. The terminal provides direct connection of strain-resistor bridge sensors without additional connections. The terminal load resistance is at least 30 Ohms. The motor stand allows for the following operations: – providing the PE bench power supply system with the required volume of compressed air in the operating range of load changes and speed modes; – to perform cylinder indication and study the working process of the PD during its operation according to the speed characteristics in the required ranges of changes in the compressed air pressure at the inlet РS = 0.3-2.0 MPa and crankshaft rotation frequencies n = 200–4000 min -1 ; – to study the influence on the indicator and effective performance of the PD of the temperature of the supplied compressed air with heating at the inlet in the range. Development of a motor stand intended for conduc­ting scientific and research work in educational, scientific and production enterprises and research laboratories of factories.