An on-engine method for dynamic characterisation of NOx concentration sensors
An on-engine method for dynamic characterisation of automotive NOx concentration sensors is presented. Steps in start of injection on a diesel engine are employed to achieve step-like NOx concentration variations on exhaust flow. On the basis of the sensor response, delay and dynamic response can be...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/74918 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/74918 |
| Access Level: | acceso abierto |
| Palabra clave: | Combustion engine Measurement techniques NOx On-board diagnostics Sensor calibration SOI ZrO2 sensor Combustion engines Calibration Combustion Diesel engines Dynamic response Engines Nitrogen oxides Sensors INGENIERIA AEROESPACIAL MAQUINAS Y MOTORES TERMICOS |
| Sumario: | An on-engine method for dynamic characterisation of automotive NOx concentration sensors is presented. Steps in start of injection on a diesel engine are employed to achieve step-like NOx concentration variations on exhaust flow. On the basis of the sensor response, delay and dynamic response can be easily identified; the paper shows a simple least squares procedure although other models and identification techniques could be used. Application data is presented for three NOx sensors: a research-grade chemiluminescence exhaust gas analyser, and two different commercial ZrO2-based sensors. © 2010 Elsevier Inc. |
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