Method of diagnosing the presence of an exhaust after-treatment component and a use of the method for vehicle on-board diagnosis
In a method for diagnosing the presence of an internal combustion engine exhaust aftertreatment component on a vehicle, the exhaust temperature is measured downstream the aftertreatment component continuously over a time period to provide a first temperature signal with fluctuating amplitude. The te...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | In a method for diagnosing the presence of an internal combustion engine exhaust aftertreatment component on a vehicle, the exhaust temperature is measured downstream the aftertreatment component continuously over a time period to provide a first temperature signal with fluctuating amplitude. The temperature signal is modified to provide a second modified temperature signal. The first and second temperature signals are compared to detect any significant difference between the signals. |
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