FIELD: engines and pumps.
SUBSTANCE: diagnostics method of failures of an exhaust gas pressure control provided in an exhaust gas system connected to an internal combustion engine with supercharging includes the following stages. Engine braking specified and back pressure is measured in the exhaust gas system by means of a back pressure sensor when the engine braking is being specified. Supercharging pressures are measured by means of a supercharging pressure sensor when the engine braking is being specified and measured back pressure and measured supercharging pressure are compared with stored values of back pressure and supercharging pressure to determine a failure of the pressure control or the back pressure sensor. A diagnostics device of failures of the exhaust gas pressure control, which is provided in the exhaust gas system, as well as a transport vehicle using the proposed method or the proposed device is described.
EFFECT: improving diagnostics reliability and accuracy.
14 cl, 1 dwg
