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氧传感器的作用是检测废气中氧气的含量,然后将检测结果及时地反馈给发动机控制单元,以实现对喷油量的闭环控制,把混合气控制在理论空燃比附近,使得三元催化转化器发挥最大的效能,获得最高废气净化率,从而降低废气中一氧化碳(CO)、碳氢化合物(HC)和氮氧化合物(NO_x)的排放量。在大众轿车上大多采用氧化锆式氧传感器。1氧化锆式氧传感器的结构与工作原理氧化锆式氧传感器的结构如图1所示。氧化锆固体电
The role of oxygen sensor is to detect the content of oxygen in the exhaust gas, and then the test results in a timely manner feedback to the engine control unit, in order to achieve closed-loop control of fuel injection, the mixture controlled in the vicinity of the theoretical air-fuel ratio, making the three-way catalytic converter Maximize performance and maximize the exhaust gas purification rate, thereby reducing emissions of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NO x) in the exhaust gas. Most of the Volkswagen sedan using zirconia oxygen sensor. A zirconia oxygen sensor structure and working principle Zirconia oxygen sensor structure shown in Figure 1. Zirconia solid electricity