Detection system and method for oxynitride sensor

Abstract

The invention discloses a detection system and method for an oxynitride sensor. The detection system comprises a tail gas distribution simulation device, a heating device, a silicon controlled rectifier (SCR) detection device, an electric signal test device and a tail gas discharging processing device, wherein the tail gas distribution simulation device is connected with one end of the heating device; and the other end of the heating device is connected in parallel with the SCR detection device, the electric signal test device and the tail gas discharging processing device. The detection system has a simple structure, can perform an experiment with different test requirements on the oxynitride sensor, can detect the real-time working state of the oxynitride sensor and can record relevant data, and can be used for researching and developing the oxynitride sensor; and the problem about exploration of researchers for an oxynitride sensor test carrier is solved.

Description

Technical field [0001] The invention relates to a detection system and a detection method of a nitrogen oxide sensor. Background technique [0002] Energy saving and emission reduction has become a common problem faced by today’s society. Countries have higher and higher air quality requirements. Motor vehicle exhaust emissions have become the main air pollutants. At present, engine aftertreatment systems use nitrogen oxide sensors to measure exhaust gas. Nitrogen oxide concentration, and the nitrogen oxide value obtained by the nitrogen oxide sensor is used to take corresponding measures to reduce nitrogen oxide gas emissions, so as to minimize the harmful nitrogen oxide gas content in exhaust emissions and achieve emission reduction Requirements. [0003] At present, there is no effective method for how to test the nitrogen oxide sensor. The general method is to use the laboratory bench to test the nitrogen oxide sensor placed in the exhaust gas pipeline. However, the bench runs...

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Problems solved by technology

[0003] At present, there is no effective method for how to test the nitrogen oxide sensor. The general method is to use the laboratory bench to test the nitrogen oxide sensor placed at the exhaust pipe, but during the operation of the bench, a lot of fuel is consumed And it is necessary to arrange the bench laboratory staff to coordinate, and during the operation of the bench, the composition of the exhaust gas test gas cannot be precisely controlled. In addition, due to the limitation of the experimental site itself, the nitrogen oxide sensor cannot be tested in depth , in response to this problem, we urgently need an effective system to detect the working state of the nitrogen oxide sensor for the in-depth understanding and research of nitrogen oxide sensors

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