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AssigneeContinental Automotive GmbH
InventorsThomas Burkhardt, Jürgen Dingl
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An internal combustion engine has an intake system (1) and an exhaust gas system (4). An exhaust turbocharger of the internal combustion engine has a compressor (42) arranged in the intake system (1) and a turbine (48) arranged in the exhaust gas system (4) of the internal combustion engine for driving the compressor (42). In order to diagnose the intake system (1), a charge pressure (PHS_AIC_DOWN) of the compressor (42) is determined in a predetermined operating state of the internal combustion engine. A leakage of the intake system (1) downstream of the compressor (42) is recognized if the determined charge pressure (PHS_AIC_DOWN) is lower than the predetermined base charge pressure (PUT_BAS) in the predetermined operating state.
A diagnostic method for performing diagnostics on the intake tract of an internal combustion engine with exhaust gas turbocharger comprising a compressor disposed in the intake tract and a turbine disposed in an exhaust tract of the internal combustion engine for the purpose of driving said compressor, the method comprising the steps of:
A device for performing diagnostics on the intake tract of an internal combustion engine with exhaust gas turbocharger comprising a compressor disposed in the intake tract and a turbine disposed in an exhaust tract of the internal combustion engine for the purpose of driving said compressor, wherein the device is operable to determine a boost pressure of the compressor in a predefined operating state of the internal combustion engine and to detect a leak in the intake tract downstream of the compressor if the boost pressure determined is less than a predefined base boost pressure in the predefined operating state.
A device for performing diagnostics on the intake tract of an internal combustion engine with exhaust gas turbocharger comprising a compressor disposed in the intake tract, a turbine disposed in an exhaust tract of the internal combustion engine for the purpose of driving said compressor, and a pressure sensor determining a boost pressure of the compressor in a predefined operating state of the internal combustion engine, wherein the device is operable to detect a leak in the intake tract downstream of the compressor if the boost pressure determined by the pressure sensor is less than a predefined base boost pressure in the predefined operating state.
Dependencies are inferred from the claim text.