# Model-based simultaneous diagnosis of ammonia injection failure and catalyst ageing in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si5.svg" display="inline" id="d1e1075"><mml:msub><mml:mrow><mml:mi mathvariant="normal">deNO</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">x</mml:mi></mml:mrow></mml:msub></mml:math> engine after-treatment systems

> Research article (Fuel, 2023) · cited 12× · AI/ML

**Wikidata**: [openalex:W4322101515](https://www.wikidata.org/wiki/openalex:W4322101515)  
**Source**: https://4ort.xyz/entity/model-based-simultaneous-diagnosis-of-ammonia-injection-failure-and-catalyst-ageing-in-mml-math-xmlns-mml-http-www-w3-or