METHOD FOR QUALITY DETECTION OF A REDUCING AGENT
The present invention relates to a method of detecting the quality of a reducing agent (2) in a reducing agent tank (1) of an SCR system for a combustion engine by using a measuring system (3) having a sound source, sound sensor, and stop objects (5) arranged at regular intervals from the sound sour...
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Sprache: | eng ; kor |
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Zusammenfassung: | The present invention relates to a method of detecting the quality of a reducing agent (2) in a reducing agent tank (1) of an SCR system for a combustion engine by using a measuring system (3) having a sound source, sound sensor, and stop objects (5) arranged at regular intervals from the sound source and the sound sensor. When the temperature of the reducing agent (2) is higher than the freezing point of the reducing agent (2) having a target concentration, a sound wave (S) is transmitted from the sound source in the direction of the stop objects (5), and the stop objects (5) reflect the sound wave (S) as a reflection wave (R) in the direction of the sound sensor. When the reflection wave (R) is not received by the sound sensor, an error is inferred. When it is detected that an error has been inferred, the reducing agent tank (1) is filled at least until the measuring system (3) is covered, and there is no error in the measuring system (3), it is inferred that the concentration of the reducing agent (2) exceeds the target concentration. The present invention aims to provide the method of detecting the quality of the reducing agent, which is able to detect the quality of the reducing agent in the reducing agent tank of the SCR system for the combustion engine.
본 발명은, 음원, 음향 센서, 그리고 음원 및 음향 센서에 대해 규정된 거리를 두고 배치되어 있는 정지 물체(5)를 구비한 측정 시스템(3)을 이용해서, 연소 엔진용 SCR 시스템의 환원제 탱크(1) 내 환원제(2)의 품질을 검출하기 위한 방법에 관한 것이다. 환원제(2)의 온도가 목표 농도를 갖는 환원제(2)의 빙점보다 높으면, 음원으로부터 음파(S)가 정지 물체(5)의 방향으로 송출되고, 정지 물체(5)는 상기 음파(S)를 음향 센서의 방향으로 반사파(R)로서 반사한다. 반사파(R)가 음향 센서에 의해 수신되지 않으면 오류가 추론된다. 오류가 추론되었고, 환원제 탱크(1)가 적어도 측정 시스템(3)이 커버될 정도까지 채워졌으며, 측정 시스템(3)에 오류가 없는 것으로서 검출되면, 환원제(2)의 농도가 목표 농도로부터 벗어나는 것으로 추론된다. |
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