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US 2006/0218895 A1Published application
Method for operating an internal combustion engine and device for executing the method
OwnerStefan Wickertinventor
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OwnerStefan Wickertinventor
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A method for operating an internal combustion engine and a device for executing the method provide for diagnostics of the exhaust system in which an exhaust-gas treatment device for converting at least one undesirable exhaust gas component is situated. A measure for the conversion is determined from the exhaust gas component, ascertained upstream from the exhaust-gas treatment-device and measured downstream from the exhaust-gas treatment device and compared to a predefinable threshold value. An error signal is issued when the threshold is not met. The approach makes it possible in particular to detect a manipulation in the exhaust system such as the use of a dummy in the exhaust-gas treatment device or, for example, a deliberately defective lining of a component situated in the exhaust-gas treatment device.
A method for operating an internal combustion engine which provides for diagnostics of an exhaust system of the internal combustion engine, in which an exhaust-gas treatment device for converting at least one undesirable exhaust gas component is situated, the method comprising:
A device for operating an internal combustion engine, which provides for diagnostics of an exhaust system of the internal combustion engine, in which an exhaust-gas treatment device for converting at least one undesirable exhaust gas component is situated, the device comprising at least one control unit for performing the following:
Dependencies are inferred from the claim text.