METHOD FOR DIAGNOSING AN EXHAUST COMPONENT IN AN EXHAUST PASSAGE FOR AN INTERNAL COMBUSTION ENGINE OF A VEHICLE

METHOD FOR DIAGNOSING AN EXHAUST COMPONENT IN AN EXHAUST PASSAGE FOR AN INTERNAL COMBUSTION ENGINE OF A VEHICLE

A method for diagnosing an exhaust component in an exhaust passage for an internal combustion engine of a vehicle. In the method, operating parameters of the internal combustion engine are monitored and recorded by a control unit while the internal combustion engine is running. If a predefined emiss...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kraewer, Bernd, Unverricht, Maik
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MEASURING
MECHANICAL ENGINEERING
PHYSICS
STEAM ENGINES
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
WEAPONS
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Beschreibung
Zusammenfassung:A method for diagnosing an exhaust component in an exhaust passage for an internal combustion engine of a vehicle. In the method, operating parameters of the internal combustion engine are monitored and recorded by a control unit while the internal combustion engine is running. If a predefined emission threshold for the exhaust component for compliance with emissions is found to have been exceeded, the current operating parameters of the internal combustion engine are stored in a control unit. The operating state of the internal combustion engine when the predefined emission threshold is exceeded is reproduced on a vehicle test bench using the stored operating parameters. The diagnosis of the exhaust component is carried out based on a comparison between the current measured value from the exhaust component and the current measured value from an emission measuring device and/or the predefined emission threshold.