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Browsing by Subject "Nitrogen oxides"

Now showing items 1-13 of 13

An on-engine method for dynamic characterisation of NOx concentration sensors

Galindo, José; Serrano Cruz, José Ramón; Guardiola, Carlos; Blanco-Rodriguez, David; Cuadrado, I.G. (Elsevier, 2011-04)

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 ...
Análisis de métodos de estimación de parámetros de control para motores de combustión interna alternativos con sistemas dinámicos y fenómenos no-lineales.

Aramburu Orihuela, Alexandra (Universitat Politècnica de València, 2021-11-24)

[ES] Con el objetivo de lograr una disminución de las emisiones contaminantes en los vehículos actuales, sin afectar su rendimiento, se utilizan distintas estrategias de control tales como el control en bucle abierto, de ...
Application of radial basis functions compared to neural networks to predict air pollution

Capilla, Carmen (WIT Press, 2015)

This paper studies the application of radial basis functions to predict nitrogen oxides 24 hours in advance. The forecast interval was chosen for practical regulatory reasons. The two study areas are in Valencia (Spain), ...
Comparative study of regulated and unregulated gaseous emissions during NEDC in a light-duty diesel engine fuelled with Fischer Tropsch and biodiesel fuels

Bermúdez, Vicente; Luján, José M.; Plá Moreno, Benjamín; Linares Rodríguez, Waldemar Gregorio (Elsevier, 2011-02)

In this study, regulated and unregulated gaseous emissions and fuel consumption with five different fuels were tested in a 4-cylinder, light-duty diesel EURO IV typically used for the automotive vehicles in Europe. Three ...
Effects of low pressure exhaust gas recirculation on regulated and unregulated gaseous emissions during NEDC in a light-duty diesel engine

Bermúdez, Vicente; Luján, José M.; Plá Moreno, Benjamín; Linares Rodríguez, Waldemar Gregorio (Elsevier, 2011-09)

Regulated and unregulated gaseous emissions with high pressure and low pressure EGR (exhaust gas recirculation) system were tested in a 4-cylinder, light-duty diesel EURO IV engine typically used in European vehicles. Four ...
Eliminación catalítica de óxidos de nitrógeno en fuentes de emisión móviles

Dutra Brambila, Larissa (Universitat Politècnica de València, 2014-09-15)

De todos los contaminantes producidos y liberados a la atmósfera, los óxidos de nitrógeno (NOx = NO+NO2) son los más difíciles de controlar. La búsqueda de alternativas que puedan reducir la generación y/o liberación ...
Evolution of chemical composition and gas emissions from aged pig slurry during outdoor storage with and without prior solid separation

Moset, V.; Cambra López, María; Estellés, F.; Torres Salvador, Antonio Germán; Cerisuelo, Alba (Elsevier, 2012-01)

Chemical composition and gas emissions from two types of pig slurry were evaluated: the liquid fraction of mechanical solid-liquid separated slurry (SS), and raw slurry (RS). The slurry was obtained at the end of a pig ...
Fe-Containing Zeolites for NH3-SCR of NOx: Effect of Structure, Synthesis Procedure, and Chemical Composition on Catalytic Performance and Stability

Martín-García, Nuria; Vennestrom; Peter Nicolai Ravnborg; Thogersen, Joakim Reimer; Moliner Marin, Manuel; Corma Canós, Avelino (John Wiley & Sons, 2017)

[EN] The direct preparation of different iron-containing Beta and CHA zeolites has been attempted under diverse synthesis conditions, including in alkaline and fluoride media, to evaluate the influence of their physicochemical ...
Increased particle emissions from early fuel injection timing Diesel low temperature combustion

Benajes Calvo, Jesus Vicente; García Oliver, José María; Novella Rosa, Ricardo; KOLODZIEJ, CHRISTOPHER PAUL (Elsevier, 2012-04)

A clean premixed Diesel combustion strategy, called low temperature combustion (LTC), was able to achieve very low nitrogen oxide emissions (<35 ppm) through use of exhaust gas recirculation (12.1% inlet oxygen), and reduced ...
Modeling of the nitrogen oxides formation process applicable to several diesel combustion modes

Redón Lurbe, Pau (Universitat Politècnica de València, 2013-11-04)

Como consecuencia de las exigentes legislaciones medioambientales actualmente en vigor, como las Euro Emission Standards en Europa, los investigadores e ingenieros se ven forzados a "re-desarrollar" el proceso de combustión ...
Reducción catalítica selectiva de NOx a bajas temperaturas

Blanch Raga, Neus (Universitat Politècnica de València, 2011-09-08)

El control de las emisiones de óxidos de nitrógeno se está convirtiendo en un desafío técnico debido a los límites de emisión cada vez más estrictos que se están imponiendo. Se ha estudiado la reducción catalítica selectiva ...
Study of the influence of static mixers of evaporation and distribution of injected Urea in SCR systems

Portillo Alcón, Alejandro del (Universitat Politècnica de València, 2019-11-18)

[EN] Nitrogen oxides are an important pollutant in industrialized countries. A widely used technology to reduce NOx emissions is Selective Catalytic Reduction (SCR) with ammonia as a reducing agent. SCR has been ...
Suitability analysis of advanced diesel combustion concepts for emissions and noise control

Torregrosa, A. J.; Broatch, A.; Novella Rosa, Ricardo; Mónico Muñoz, Luisa Fernanda (Elsevier, 2011-02)

[EN] During the last years, the preservation of the atmospheric environment has played an increasingly important role in society. The Diesel engine can be considered an environmentally friendly engine because of its low ...