Les moteurs d’avion sont une source importante d’émissions d’oxydes d’azote (NOx) et contribuent à la pollution atmosphérique et à la dégradation de l’environnement. En conséquence, les avionneurs ont développé des technologies avancées pour réduire les émissions, notamment l’utilisation de capteurs de NOx.
Les capteurs de NOx utilisés dans les moteurs d’avion fonctionnent de la même manière que ceux utilisés dans d’autres sources de combustion. Ils surveillent en permanence les niveaux d'émissions de NOx dans les gaz d'échappement et envoient les valeurs au système de contrôle du moteur. Le système de contrôle du moteur ajuste ensuite l'injection de carburant, le rapport air/carburant et d'autres paramètres de combustion pour réduire les émissions de NOx.
One key challenge in developing NOx sensors for aircraft engines is the need to make them lightweight, durable, 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.
L'utilisation de capteurs de NOx dans les moteurs d'avion devient de plus en plus obligatoire, car les réglementations obligent les avionneurs à respecter des normes d'émissions strictes. Ces capteurs permettent aux avionneurs de s’assurer que leurs moteurs sont conformes à ces réglementations et de réduire l’impact environnemental du transport aérien.
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.
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PACCAR MX-13 Forward NOx Sensor 2236409 12V
OE: 2236409Brand: DAF & PACCARSample price $249.99En stock — 10 pièces
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Capteur Nox 5WK96755A A2C95912900-01 Kubota Fendt SNS155A JCB Bobcat
OE: 5WK96755A · SNS155A · A2C95912900-01Brand: JCB · CumminsSample price $249.99En stock — 10 pièces
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441-5127-03 Capteur NOx 441-5127 CAT 5WK9 7354 HYN2937 4415127
OE: HYN2937 · 4415127 · 5WK9Brand: Caterpillar · HyundaiSample price $249.99En stock — 10 pièces
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12648630 Capteur de NOX GM Duramax Diesel 6,6 L 5WK9 6631D
OE: 12648630 · 6631D · 5WK9Brand: GMSample price $249.99En stock — 10 pièces
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059907807N Audi 12V Capteur NOX 5WK9 7441 VW
OE: 059907807N · 5WK9Brand: Audi & VWSample price $199.99En stock — 10 pièces
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Capteur d'oxyde d'azote Nox 5WK9 6614J 8 fils 24V 590mm
OE: 6614J · 5WK9Brand: CumminsSample price $249.99En stock — 10 pièces
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Capteur NOx 5801777219 5WK9 6720A pour IVECO Euro 6 24V 590mm
OE: 5801777219 · 6720A · 5WK9Brand: IVECOSample price $249.99En stock — 10 pièces
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Capteur Nox 5WK9 6733B pour Iveco 5801754016 5801443021 5801273980
OE: 6733B · 5801754016 · 5801443021 · 5WK9Brand: Cummins · IVECOSample price $249.99En stock — 10 pièces
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A0009055010 MB Nox Sensor A3C01718000-616 Mercedes-Benz
OE: A0009055010Marque : Mercedes BenzSample price $249.99En stock — 10 pièces
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Capteur NOx A2C95993800-01 5WK9 6753B Cummins 4326869
OE: 6753B · 4326869 · A2C95993800-01 · 5WK9Brand: CumminsSample price $249.99En stock — 10 pièces
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Capteur Nox 2236409PEX Paccar PACCAR 5WK9 6759C Kenworth Peterbilt Cummins
OE: 2236409PEX · 6759C · 5WK9Brand: DAF & PACCARSample price $249.99En stock — 10 pièces
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Capteur NOx 441-5128-04 pour pilier Cater 4415128, catalyseur Lambda 441-5128
OE: 4415128Brand: CaterpillarSample price $249.99En stock — 10 pièces
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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.
Turbofan Engines
Turbofan engines used in commercial and military aircraft require NOx monitoring at the exhaust. Modern turbofan designs focus on lean-burn combustion to reduce NOx formation. Our sensors are calibrated for the high-temperature, high-velocity exhaust streams typical of turbofan operations.
Turboprop Engines
Turboprop engines, common in regional aircraft and military transports, operate at different power settings than turbofans. NOx sensors for turboprop applications must be responsive across a wider range of operating conditions while maintaining accuracy at lower exhaust temperatures.
Helicopter Turboshafts
Turboshaft engines used in helicopters face unique vibration profiles and rapid power changes. Our aviation-grade NOx sensors are designed to withstand these conditions while providing accurate readings during dynamic flight operations.
Auxiliary Power Units (APUs)
APUs generate electrical power and bleed air while aircraft are on the ground. APU emission monitoring is increasingly important as airports face stricter environmental regulations. Our sensors are suitable for APU exhaust monitoring applications.
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
Emission Testing
Engine certification and compliance testing require precise NOx measurement across the entire operating envelope.
Engine Health Monitoring
Changes in NOx output can indicate combustion chamber wear, fuel injector problems, or other maintenance issues.
Research & Development
New engine designs require extensive NOx monitoring during development to optimize combustion for lower emissions.
Ground Support Equipment
Aviation ground equipment with diesel engines also requires NOx monitoring, and our sensors are suitable for these applications.

