| 제목 |
Urea-SCR System의 NH3 Slip 저감을 위한
NOx Sensor 기반 폐루프 제어기 개발에 관한 연구 |
| 분야 |
연료 및 배기 |
| 언어 |
Korean |
| 저자 |
강석호(건설기계부품연구원), 오승영(컨트롤웍스), 이민광(컨트롤웍스), 김훈명(한국자동차연구원), 강정호(한국자동차연구원) |
| Key Words |
Closed-loop controller(폐루프 제어기), NH3 slip(암모니아 슬립), SCR(선택적 환원촉매), DCU(도징제어 장치), Non-road diesel engine(비도로 디젤엔진) |
| 초록 |
For non-road diesel engines of 56 kW or higher, the application of SCR is essential in order to comply with the NOx regulation of the current emission regulations. In order to maximize the NOx reduction efficiency of the SCR system, the NH3 adsorption characteristics of the SCR catalyst can be utilized. Since the NH3 adsorbed on the SCR catalyst has no direct measurement method, it is inevitable to rely on the NH3 adsorption estimation model, and there is a possibility that NH3 slip may occur due to model error. Therefore, this study proposed a closed loop control method in order to minimize NH3 slip by utilizing the NOx sensor signal at the SCR catalyst outlet. It was verified through the NRTC mode, the certification test mode for non-road diesel engines. As a result of the test, it was confirmed that the closed loop controller proposed in this study can reduce NH3 slip through detailed calibration. |
| 원문(PDF) |
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