NOx Sensor

Nox sensors as one of the lmportant members of SCR system,are composed of sensor probe and electroniccontrol unit.They are connected by a wire hamess to measure the concentration of nitrogen oxides in tail gas and the concentration of oxygen.In practical application,the probe is installed in the tall gas plpeline of the automobile,and the concentration of the tall gas will be fed back to the electronic control unit by the ceramic chip in the form of voltage.The heating temperature of the sensor probe is oontrolled by the electronic control unit.After a series of signal conditioning.the concentration of NOx and oxygen in the pump is finally determined.The electronic control unit communicates with the vehicle control center (ECU)through the CAN,

and transmits the measured gas values to the vehicle control center (ECU)in real time,which provides the basis for SCR injection quantity,so as to reduce the emission of NOx.