Method for controlling the exhaust gas composition when operating an exhaust gas treatment device
The method involves measuring a lambda value of an exhaust gas using a lambda sensor (17) in a flow direction of an exhaust gas behind an exhaust gas treatment system (16). The sensor emits a sensor output signal. Ripples of the sensor output signal is evaluated such that a desired value of the sens...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | The method involves measuring a lambda value of an exhaust gas using a lambda sensor (17) in a flow direction of an exhaust gas behind an exhaust gas treatment system (16). The sensor emits a sensor output signal. Ripples of the sensor output signal is evaluated such that a desired value of the sensor-output signal and the lambda value are shifted in a range, in which the ripples of the sensor-output signal fall below a preset value. The preset value of the sensor-output signal is adjusted only during constant operating conditions of an internal combustion engine (10). |
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