Aircraft Engines NOx Sensor

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.

Related NOx sensor products

Use the products below as a starting point for cross-reference. If your engine, equipment, or turbine application is not listed, send the OE number, sensor label photo, connector shape, and quantity requirement for RFQ matching.

Aircraft Engine Types and NOx Requirements

Aircraft engines present unique challenges for NOx sensor technology due to the extreme operating conditions, including high altitudes, temperature variations, and the need for absolute reliability. Modern aviation requires precise emission monitoring to meet stringent environmental regulations.

Aviation NOx Regulations

The International Civil Aviation Organization (ICAO) sets NOx emission standards for aircraft engines through its Committee on Aviation Environmental Protection (CAEP). These standards have become progressively stricter:

• CAEP/2 Standards — Baseline NOx limits established in 1996
• CAEP/4 Standards — 12% reduction in NOx limits
• CAEP/6 Standards — Further 15% reduction applied to new engine types
• CAEP/8 Standards — Additional 10% NOx reduction requirements
• CAEP/10 Standards — Most recent and most stringent NOx limits

Accurate NOx measurement is essential for engine manufacturers to certify compliance with these evolving standards. Our aviation-grade sensors provide the precision and reliability required for this critical application.

Specific Applications