Sancho Fornes, María del Carmen(Universitat Politècnica de València, 2021-01-14)
[ES] El presente Trabajo Fin de Grado ha sido realizado con la finalidad de entender la influencia de las condiciones de contorno en el proceso de atomización de un quemador de flujo continuo. Para ello se han utilizado ...
Salvador, Francisco Javier; Gimeno, Jaime; De La Morena, Joaquín; González-Montero, Lucas Antonio(Elsevier, 2021-05-15)
[EN] Primary atomization and initial spray development are critical in the operation of high-pressure liquid sprays such as the ones used in internal combustion engines. In the current paper, an analysis of the effect of ...
Payri, Raul; Salvador, F.J.; Gimeno, Jaime; Viera-Sotillo, Juan Pablo(Frontiers Media SA, 2015)
[EN] Understanding and controlling mixing and combustion processes is fundamental in
order to face the challenges set by the ever more demanding pollutant regulations
and fuel consumption standards of direct injection ...
[EN] This paper presents an experimental and computational study with the aim of developing a fundamental understanding of the nozzle internal flow behavior in a prototype piezo-stack injector with a multi-orifice nozzle, ...
Salvador, F.J.; Gimeno, Jaime; Carreres, M.; Crialesi Esposito, Marco(Elsevier, 2017)
[EN] In this paper an experimental investigation on the heating experienced by the fuel when it expands through the calibrated orifices of a diesel injector is carried out. Five different geometries corresponding
to the ...
[EN] Since the combustion process in spray flames is a highly complex multi-phase phenomenon, which involves several simultaneous processes such as atomization, vaporization, and chemical kinetics, it is still not fully ...
Carvallo García, César Leonardo(Universitat Politècnica de València, 2023-07-17)
[ES] A medida que aumenta la conciencia climática y se buscan reducir las emisiones globales, se están realizando esfuerzos para producir tecnologías que permitan desarrollar motores más limpios y amigables con el medio ...
Peraza Ávila, Jesús Enrique(Universitat Politècnica de València, 2020-09-02)
[EN] The potential of diesel engines in terms of robustness, efficiency and energy density has made them widely used as power generators and propulsion systems. Specifically, fuel atomization, vaporization and air-fuel ...
Carvallo García, César Leonardo(Universitat Politècnica de València, 2020-12-28)
[ES] La mayoría de los sistemas activos de extinción de incendios consisten en inyectar un agente en el volumen donde ocurre el fuego. En el caso de la cabina de carga de la aeronave, el agente utilizado hasta la fecha es ...
[EN] Two prototypes multi-hole diesel injector from a high-pressure common rail system were used to operated with diesel and n-Heptane fuels in a high-pressure and high-temperature test rig able to reach 1100 K and 15 MPa ...
In this research, two Engine Combustion Network (ECN) mono-orifice nozzles, referred to as Spray C and Spray D. respectively, were analyzed by performing visualization tests through Schlieren and Diffused Backlight ...
Payri, Raul; Salvador Rubio, Francisco Javier; Gimeno, Jaime; Peraza, Jesús E(Elsevier, 2016-10-15)
The second part of this experimental analysis, presented in this paper, seeks to go deep on the characterization of the Spray C and Spray D nozzles from the Engine Combustion Network, investigating the penetration of fuel ...
[EN] This paper deals with the influence of flow regime (laminar, transition or turbulent) on the internal flow behavior, and how it affects the spray development in diesel nozzles. In particular, the research described ...
[EN] The research conducted and explained in this paper aims to explore and understand the influence of flow regime (laminar, transition or turbulent) inside diesel injector nozzles. For this purpose, an experimental study ...
[EN] The mixing of isothermal liquid sprays in engine-like conditions has been investigated by applying the structured planar laser imaging technique to remove multiple light scattering. The intensity of the illumination ...
Salvador Rubio, Francisco Javier; Gimeno, Jaime; Carreres Talens, Marcos; Crialesi Esposito, Marco(Elsevier, 2016-04-15)
An experimental study is conducted in this paper in order to assess the influence of the fuel temperature on the performance of a last generation common-rail ballistic solenoid injector. Mass flow rate measurements are ...
Due to world trend on the emission regulations and greater demand of fuel economy, the research on advanced diesel injector designs is a key factor for the next generation diesel engines. For that reason, it is well ...
Payri Marín, Raúl; Salvador Rubio, Francisco Javier; Gimeno García, Jaime; Morena Borja, Joaquín de la(Elsevier, 2011-04)
An experimental study of two real multi-hole Diesel injectors is performed under current DI Diesel engine operating conditions. The aim of the investigation is to study the influence of injector technology on the flow at ...
In the past years the awareness on climate change, air pollution and fossil fuel availability has been growing, this has pushed the automotive industry to search for new combustion systems as well as for the optimization ...
[EN] The injection process of the urea-water solution (UWS) determines the initial conditions for the mixing and evaporation of the fluid in the selective catalytic reduction system. In this study, the liquid atomization ...