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Listar por palabra clave "Emissions control"

Mostrando ítems 1-11 de 11

A computational analysis of the impact of bore-to-stroke ratio on emissions and efficiency of a HSDI engine

Benajes, Jesús; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, A.; Duverger, T. (Elsevier, 2017-11-01)

[EN] Research on combustion systems for Internal Combustion Engines (ICE) is guided by the necessity of improving engine efficiency while achieving the pollutant regulations. In this framework, this study identifies and ...
Ammonia injection failure diagnostic and correction in engine after-treatment system by NOx and NH3 emissions observation

Pla Moreno, Benjamín; Bares-Moreno, Pau; Sanchis Pacheco, Enrique José; Nakaema-Aronis, André (Elsevier, 2022-08-15)

[EN] To ensure that after-treatment systems (ATS) reduce emissions to the levels for which they were designed, it is essential that the ATS control can rely on the feedback signals from the sensors and actuators that are ...
Effect of H2-assisted oxidation catalysts on CO and HC emissions from dual-fuel H2-diesel engines under variable ambient and driving conditions

Conde-Cortabitarte, Carla (Universitat Politècnica de València, 2024-10-15)

[ES] Las normativas globales vigentes de emisiones contaminantes requieren su cumplimiento incluso en condiciones ambientales adversas, considerando altitud y temperatura ambiente como condiciones de contorno adicionales ...
Evaluation of massive exhaust gas recirculation and Miller cycle strategies for mixing-controlled low temperature combustion in a heavy duty diesel engine

Benajes Calvo, Jesus Vicente; Molina Alcaide, Santiago Alberto; Novella Rosa, Ricardo; Belarte Mañes, Eduardo (Elsevier, 2014)

The future of compression ignition engines depends on their ability for keeping their competitiveness in terms of fuel consumption compared to spark-ignition engines. In this competitive framework, the Low Temperature ...
Fuel-to-air ratio control under short-circuit conditions through UEGO sensor signal analysis

Guardiola, Carlos; Pla Moreno, Benjamín; Real, Marcelo; TRAVAILLARD, Cyril; Dambricourt, Frederic (SAGE Publications, 2020)

[EN] The impact of short-circuit pulses on the after-treatment system of a spark-ignited engine must be taken into account to keep the fuel-to-air equivalence ratio within the three-way catalyst window, thereby reducing ...
Miller cycle for improved efficiency, load range and emissions in a heavy-duty engine running under reactivity controlled compression ignition combustion

Molina, Santiago; García Martínez, Antonio; Monsalve-Serrano, Javier; Estepa-Ruiz, Daniel (Elsevier, 2018-05-25)

[EN] The low temperature, premixed combustion strategies are being investigated in the recent years as a mean to break the NOx-soot trade-off appearing during the diffusive conventional diesel combustion. This approach ...
Model-based simultaneous diagnosis of ammonia injection failure and catalyst ageing in deNOx engine after-treatment systems

Pla Moreno, Benjamín; Piqueras, P.; Bares-Moreno, Pau; Nakaema-Aronis, André (Elsevier, 2023-07-01)

[EN] After-treatment systems (ATS) in vehicle powertrains are developed to achieve maximum pollutant abatement efficiency under design operating conditions. However, anomalies in the ATS may appear during real operation, ...
Operating range extension of RCCI combustion concept from low to full load in a heavy-duty engine

Molina Alcaide, Santiago Alberto; García Martínez, Antonio; Pastor Enguídanos, José Manuel; Belarte Mañes, Eduardo; Balloul, I. (Elsevier, 2015-04-01)

Fuel reactivity controlled compression ignition (RCCI) concept has arisen as a solution to control premixed combustion (PCI) strategies, which avoids soot and NOx formation by promoting a lean air fuel mixture and low ...
Optimization of the Combustion System of a Medium Duty Direct Injection Diesel Engine by Combining CFD modeling with Experimental Validation

Benajes Calvo, Jesus Vicente; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, Alberto; Hasegawa, Manabu; Tsuji, Naohide; Emi, Masahiko; Uehara, Isshoh; Martorell, Jordi; Alonso, Marcos (Elsevier, 2016-02-15)

The research in the field of internal combustion engines is currently driven by the needs of decreasing fuel consumption and CO2 emissions, while fulfilling the increasingly stringent pollutant emissions regulations. In ...
Proyecto de simplificaciones en el modelado de reactores monolíticos con recubrimiento catalítico multicapa

Sierra Campos, Paula (Universitat Politècnica de València, 2024-11-21)

[ES] Hoy en día, la concienciación sobre los efectos de la contaminación antropogénica en el medio ambiente y las legislaciones de los distintos gobiernos, especialmente los europeos, han suscitado la necesidad de buscar ...
Short-circuit effects on spark ignition engine after-treatment and fuel-to-air ratio control

Guardiola, Carlos; Pla Moreno, Benjamín; Real-Minuesa, Marcelo; Travaillard, Cyril; Dambricourt, Frederic (SAGE Publications, 2020)

[EN] The short circuit of fresh air is a more and more extended strategy to deal with low-end torque issues, very common in small turbocharged and spark-ignited four-stroke engines. Therefore, from the author¿s point of ...