主要介绍了浓差型ZrO2 氧传感器、极限型ZrO2 氧传感器和半导体型TiO2 氧传感器的工作原理及其在汽车中的应用。 关键词: 氧传感器; 汽车; 空燃比 Abstract : The principle of the oxygen sensors which include differential concentration type ,limiting current type and semiconductor type are described. The application of the oxygen sensors in automobile is introduced also. Key words :oxygen sensors ; automobile ; air/ fuel(A/ F)