Ammonia Cross-Sensitivity Eliminatin Method of NOx Sensor for UREA-SCR (Selective Catalytic Reduction) System
| Autor: | Tae Hoon Lee, Seong-Jae Yoo, Sang-Myun Lee, Kyongtae Kim, Hong-Beom Kwon, Ui-Seon Hong, Dong-Hyun Kang, Yong-Jun Kim |
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| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Materials science 020209 energy Cross sensitivity Analytical chemistry Exhaust gas Selective catalytic reduction 02 engineering and technology Filter (signal processing) Ammonia chemistry.chemical_compound 020901 industrial engineering & automation chemistry 0202 electrical engineering electronic engineering information engineering Urea NOx |
| Zdroj: | 2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII). |
| Popis: | This paper reports an ammonia cross-sensitivity elimination filter for SCR systems. Since NO X sensors are cross sensitive to NH 3 , a reading of NO X sensor could not be accurate. As the reading is inaccurate, the closed-loop SCR systems is unpredictable. The proposed filter can be applied to any kinds of NO X sensors and effectively remove the cross-sensitivity. Single gas and mixed exhaust gas tests are conducted. The results show the evident removal of NH 3 in both single gas and mixed gases experiments. The experiments show the filtering method can considerably improve the accuracy of NO X concentration measurement in Urea-SCR systems. |
| Databáze: | OpenAIRE |
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