Aircraft engines are a significant source of nitrogen oxide (NOx) emissions and contribute to air pollution and environmental degradation. As a result, aircraft manufacturers have developed advanced technologies to reduce emissions, including the use of NOx sensors.
NOx sensors used in aircraft engines work in a similar way to those used in other combustion sources. They continuously monitor the levels of NOx emissions in the exhaust gases and send the readings to the engine control system. The engine control system then adjusts the fuel injection, air-to-fuel ratio, and other combustion parameters to reduce NOx emissions.
One key challenge in developing NOx sensors for aircraft engines is the need to make them lightweight, robust, and reliable, as they must operate in extreme conditions of temperature, pressure, and vibration. Manufacturers have developed NOx sensors using advanced materials and technology such as ceramics, thin films, and surface plasmon resonance.
The use of NOx sensors in aircraft engines is increasingly becoming mandatory, as regulations require aircraft manufacturers to meet stringent emissions standards. These sensors enable aircraft manufacturers to ensure their engines comply with these regulations and reduce the environmental impact of air travel.