Method and apparatus for determining nitrogen oxides and ammonia in exhaust gas, vehicle, computer program product and computer-readable storage medium
DE102024210410B3Active Publication Date: 2025-12-24SCHAEFFLER TECHNOLOGIES AG & CO KG
Patent Information
- Application Number
- DE102024210410
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-12-24
- Estimated Expiration
- 2044-10-29
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Abstract
In a method for determining nitrogen oxides and ammonia in the exhaust gas of a vehicle equipped with a nitrogen oxide sensor, a lambda signal is received. Based on this lambda signal, a lambda value is determined that is representative of the vehicle's air-fuel ratio. A lambda gradient is then calculated, indicating whether the lambda value has increased or decreased compared to a previous value. Based on the lambda value and the lambda gradient, it is determined whether a reading from the nitrogen oxide sensor is representative of nitrogen oxides in the exhaust gas or whether it is representative of ammonia in the exhaust gas. An information signal is then sent, indicating whether the reading from the nitrogen oxide sensor is representative of nitrogen oxides in the exhaust gas or whether it is representative of ammonia in the exhaust gas.
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Citation Information
Patent Citations
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