汽车用氧化锆式氧传感器应用现状与发展趋势

Application status and development trends of ZrO_2 oxygen sensors in automobiles

介绍了氧化锆式氧传感器在汽车排放控制系统中的重要性,按照检测空燃比数值范围的宽窄对国内外现阶段主要的氧化锆式氧传感器进行了分类,对传统的"杯型"氧传感器、"平面型"氧传感器和新型空燃比传感器的结构组成、工作原理、信号特性及应用情况进行了介绍,重点论述了单元件型空燃比传感器和双元件型空燃比传感器的工作机理,比较分析了这几类氧化锆式氧传感器的优缺点,归纳得出了新型空燃比传感器将逐步取代传统氧传感器,未来能够满足检测范围宽、工作温度低、体积小的氧传感器将成为汽车氧传感器的发展趋势。

The importance of ZrO, oxygen sensors in vehicle emission control systems is introduced. Several main ZrO2 oxygen sensors in worldwide are classified according to the air-fuel ratio scale. Traditional cup type ZrO2 oxygen sensors, planar ZrO2 oxygen sensors and new type of air-fuel ratio sensors are discussed at the aspects of structural components, working principles, signal characteristics and application. Working mechanism of unit type air -fuel ratio sensors and double element air-fuel ratio sensors are discussed emphatically. The advantages and disadvantages of ZrO2 oxygen sensors are analyzed. The conclusion is giving that the new air-fuel ratio sensors will replace traditional oxygen sensors gradually. In the future, wider detection range, lower working temperature and smaller volume have become the developing trends of automobile oxygen sensors.