Benajes Calvo, Jesus Vicente; López Sánchez, José Javier; Novella Rosa, Ricardo; Redón Lurbe, Pau(Elsevier, 2014-08)
Multiple researches have focused on reducing the NOx emissions and the greatest results have been achieved when lowering the combustion temperature by employing massive exhaust gas recirculation rates (LTC). Despite this ...
[EN] In this paper, a computational study was performed using a combination of several numerical tools to better understand the limiting aspects of combustion in a passive pre-chamber ignition system when operating at lean ...
Benajes, Jesús; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, Alberto; Kokjohn, Sage L.(Elsevier, 2018)
[EN] An optimization methodology based on a genetic algorithm coupled with the KIVA computational fluid dynamics (CFD) code is applied to the design of a combustion system of a heavy-duty diesel engine fueled with dimethyl ...
Benajes, Jesús; Novella Rosa, Ricardo; Pastor Enguídanos, José Manuel; Hernández-López, Alberto; Kokjohn, Sage L.(Elsevier, 2018)
[EN] A genetic algorithm optimization methodology is applied to the design of the combustion system of a heavy-duty diesel engine fueled with dimethyl ether (DME). The optimization includes the key combustion system related ...
Benajes Calvo, Jesus Vicente; Molina Alcaide, Santiago Alberto; García Martínez, Antonio; Monsalve Serrano, Javier; Durrett, Rusell(Elsevier, 2014-09-15)
New combustion concepts applied to Compression Ignition engines are focused on achieve low temperature combustion together with a lean mixture distribution by allowing extra time from the end of injection to the start of ...
[EN] Diesel fuel is composed of a complex mixture of hundreds of hydrocarbons that vary globally depending on crude oil sources, refining processes, legislative requirements and other factors. In order to simplify the study ...
Benajes Calvo, Jesus Vicente; Galindo Lucas, José; Fajardo, P.; Navarro García, Roberto(CASRPCenter of Advanced Scientific Research and Publications, 2014)
[EN] A steady multiple reference frame segregated compressible solver and an unsteady sliding mesh one are
developed using OpenFOAM® to simulate turbomachinery. For each of the two solvers, governing
equations, numerical ...
Hernández López, Alberto(Universitat Politècnica de València, 2015-06-01)
[EN] This Thesis describes an optimizacion process of an internal combustion chamber of a diesel engine. The engine is validated and simulated using a CFD software. Once the softwave is able to capture the physical phenomena ...
[EN] Stringent emissions limits introduced for internal combustion engines impose a major challenge for the research community. The technological solution adopted by the manufactures of diesel engines to meet the NOx and ...
Benajes Calvo, Jesus Vicente; Molina, Santiago; García Martínez, Antonio; Monsalve Serrano, Javier(Elsevier, 2015-07-15)
This work investigates the effects of the direct injection timing and blending ratio on RCCI performance and engine-out emissions at different engine loads using four low reactivity fuels: E10-95, E10-98, E20-95 and E85 ...
Desantes Fernández, José Mª; Benajes Calvo, Jesus Vicente; García Oliver, José María; KOLODZIEJ, CHRISTOPHER PAUL(SAGE Publications (UK and US), 2014-02)
In this study, 10 premixed diesel low-temperature combustion engine operating conditions were chosen based on engine intake pressure (1.2-1.6 bar), intake oxygen concentration (10%, 11%, and 12%), and injection timing (-24 ...
Benajes Calvo, Jesus Vicente; Molina, Santiago; García Martínez, Antonio; Monsalve Serrano, Javier(Elsevier, 2015-10)
This work investigates the effect of low reactivity fuel characteristics and blending ratio on low load RCCI (reactivity controlled compression ignition) performance and emissions using four different low reactivity fuels: ...
Benajes Calvo, Jesus Vicente; García Martínez, Antonio; Pastor Enguídanos, José Manuel; Monsalve Serrano, Javier(Elsevier, 2016-03-01)
This work investigates the effects of the piston bowl geometry on RCCI (Reactivity Controlled Compression Ignition) heat transfer and combustion losses and its repercussion on the engine efficiency. For this purpose, three ...
Benajes, Jesús; García Martínez, Antonio; Monsalve-Serrano, Javier; Martínez-Boggio, Santiago Daniel(Elsevier, 2020-01-05)
[EN] Hybrid Electric Vehicles (HEVs) can be considered as a potential technology to promote the change from conventional mobility to e-mobility. However, the real benefits in terms of CO2 emissions depend on a great extent ...
Arthozoul, Simon Jean Louis(Universitat Politècnica de València, 2011-10-10)
Definición, análisis y mejoras de las posibilidades de la introducción de una combustión parcialmente premezclada en un motor flexible de camión. Más en detalle se trata de estudiar de que forma (con que estrategia de ...
Novella Rosa, Ricardo(Universitat Politècnica de València, 2009-12-17)
El objetivo principal de esta investigación ha consistido en determinar y analizar el potencial de los ciclos Atkinson y Miller para reducir el nivel de emisiones contaminantes y el consumo de combustible en un motor Diesel ...
[EN] This work investigates the load limits of reactivity controlled compression ignition combustion, a dual-fuel concept which combines port fuel injection of low-reactivity fuels with direct injection of diesel fuel, in ...
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 ...
[EN] In the last years, a growing interest about increasing engine efficiency has led to the development of new engine technologies. Since air motion in the chamber is a key issue in internal combustion engines to improve ...
[EN] The pre-chamber ignition concept is an attractive strategy to enable the operation of spark-ignition engines in lean or diluted conditions keeping a suitable combustion process. According to the results the benefits ...