摘要
为快速准确地检测柴油机NOX排放值,提出了以NiO为敏感电极、YSZ为固体电解质的混合电位型NOX传感器。通过分析NOX传感器的气敏、温度、阻抗和响应等特性曲线的变化规律,得到了NOX传感器敏感电极厚度的最佳参数。试验结果表明,优化后的NOX传感器能够满足柴油机选择性催化还原(SCR)系统在线实时检测要求。
To detect NOx emission value of the diesel engine quickly and accurately, the mixed-potential type NOx sensor, which with the NiO as the sensitive electrode and the YSZ as the solid electrolyte is proposed. Through analyzing the variation of the characteristic curves of the NOx sensor, e.g. those of gas sensing, temperature, impedance and response, the optimal parameters of the thickness of sensitive electrode of NOx sensor are obtained. The test result shows that the optimized NOx sensor can satisfy the requirement for online and real time detection for selective catalytic reduction I SCR ） system of the diesel engine.
出处
《自动化仪表》
CAS
北大核心
2012年第9期5-7,10,共4页
Process Automation Instrumentation
基金
河南省科技厅重点攻关计划基金资助项目(编号:112102210363)
河南省高等学校青年骨干教师基金资助项目(编号:2010GGJS-150)
关键词
敏感电极
柴油机
传感器
选择性催化还原
固体电解质
控制策略
Sensitive electrode
Diesel engine
Sensor
Selective catalytic reduction （SCR）
Solid electrolyte
Control strategy
