Structural diagram of the brake stand: 1 – internal combustion engine; 2 – engine test bench; 3 – balance dynamometer; 4 – silencer; 5 – exhaust system; 6 – gas analyzer; 7 – receiver for air; 8 – control panel; 9 – instrument panel from sensors on the engine; 10 – fuel tank; 11- device for measuring fuel consumption; 12 – engine coupling with a stand; 13 – air filter; 14 – water cooling system; 15 – temperature gauge of the engine cooling system; 16 – engine oil pressure gauge; 17 – electronic tachometer