NOx sensor
Overview
This sensor is designed to meet the stringent NOx emission regulations of recent years by accurately measuring the concentration of NOx gas, a regulated substance. It can also simultaneously measure oxygen concentration.
Application to NOx after-treatment systems
NOx sensors are incorporated into urea-based SCR systems and LNT-based NOx reduction aftertreatment systems. In urea-based SCR systems, a NOx sensor located upstream of the SCR catalyst directly measures the NOx gas concentration emitted from the engine, supporting optimal urea amount control necessary for NOx treatment. Furthermore, NOx sensors located downstream of the SCR catalyst are used to detect deterioration and failure of the SCR catalyst. To meet the stringent NOx regulations of recent years, extremely high-precision NOx detection is required.
Furthermore, the NOx sensor also has an oxygen concentration detection function, and like the full-range air-fuel ratio sensor, it can output an output corresponding to the oxygen concentration in the exhaust gas.
Main Products
ZFAS®-N / EGS®-NX
Purpose
This sensor can simultaneously measure NOx and oxygen concentrations in exhaust gases. It contributes to energy saving and clean air through NOx control in gasoline and diesel engines.
Features
- NOx and oxygen concentrations can be measured simultaneously and in real time.
- It has a fast response time.
- High water resistance
- High toxicity resistance
- early activity
Related Products
Sensors that detect whether the exhaust gas is rich or lean by using the characteristic that the output voltage changes sharply at the stoichiometric air-fuel ratio.
Sensors that, when controlled in combination with a dedicated interface, provide an output corresponding to the oxygen concentration in the exhaust gas.
Sensors that can measure the concentration of NOx, a regulated substance, with high accuracy. They can also measure oxygen concentration at the same time.