The difference between oxygen sensor and nitrogen oxygen sensor

2019-11-10 22:13:20

The difference between oxygen sensor and nox sensor

Both the oxygen sensor and the nox sensor are mounted on the exhaust pipe, and the sensors look similar. Many people think that the structure is the same. Let's take a look at it below.

1.role comparison

The function of the oxygen sensor is to monitor the concentration of oxygen in the exhaust gas, and feed back the information to the control unit to correct the fuel injection quantity to achieve closed-loop control of the engine and reduce harmful gas emissions.

The function of the nitrogen oxide sensor detect the content of nitrogen oxides in the exhaust gas, and the ECU controls the urea injection amount according to the feedback information to reduce the exhaust gas emissions.


2. appearance comparison

The nitrogen oxygen sensor transmits data through the CAN control module to engine ECU, and the oxygen sensor directly transmits information to the ECU.the oxygen sensor only transmits electric signal,then ECU calculate according to the signal.But nox sensor directly transmits the data to ECU,the nox sensor datta is more accurate,and in the future nox sensor will replace the oxygen sensor step by step

nox sensors.jpg