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Listar por palabra clave "Fuel injection"

Mostrando ítems 1-14 de 14

A complete 0D thermodynamic predictive model for direct injection diesel engines

Payri González, Francisco; Olmeda, P.; Martín Díaz, Jaime; García Martínez, Antonio (Elsevier, 2011-06-01)

[EN] Ideal models provide the simplest way to reproduce internal combustion engine (ICE) cycles, but they usually do not represent with sufficient accuracy the actual behaviour of an ICE. A suitable alternative for research ...
A Comprehensive Study of Particle Size Distributions with the Use of PostInjection Strategies in DI Diesel Engines

Desantes, J.M.; Bermúdez, Vicente; García Martínez, Antonio; Linares Rodríguez, Waldemar Gregorio (Taylor & Francis, 2011)

[EN] Control strategies such as variations in injection pressure and timing have been used by researchers to reduce in-cylinder exhaust emissions and meet legislation standards. Postinjection has been studied for several ...
Análisis de la interacción de los procesos de inyección y combustión con el campo de velocidad dentro del cilindro en motores de encendido por compresión

Pachano Prieto, Leonardo Manuel (Universitat Politècnica de València, 2017-07-27)

Emission legislation together with the need of more fuel-efficient engines have driven the development of promising combustion concepts in compression ignition (CI) engines. Most of them, lead toward a lean and low temperature ...
Binary cavitation in a transparent three hole GDI nozzle

Chaves, Humberto; Donath, Sebastian (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] A more or less real size three hole (0.1 mm diameter) transparent injection nozzle was made with 120° between the orifices and an inclination of 20° to the injector axis. The geometry is similar to that of a multi ...
Characterization and prediction of the discharge coefficient of non-cavitating diesel injection nozzles

Desantes Fernández, José Mª; López, J. Javier; Carreres Talens, Marcos; López-Pintor, Darío (Elsevier, 2016-11-15)

An experimental and theoretical study about the characterization of the discharge coefficient of diesel injection nozzles under non-cavitating conditions is presented in this paper. A theoretical development based on the ...
Computational study on the non-reacting flow in Lean Direct Injection gas turbine combustors through Eulerian-Lagrangian Large-Eddy Simulations

Belmar Gil, Mario (Universitat Politècnica de València, 2021-01-21)

[ES] El principal desafío en los motores turbina de gas empleados en aviación reside en aumentar la eficiencia del ciclo termodinámico manteniendo las emisiones contaminantes por debajo de las rigurosas restricciones. Ésto ...
Diseño, implementación y mejora de un sistema de inyección de gasolina por bucle cerrado

López Vidal-Abarca, Fernando (Universitat Politècnica de València, 2021-10-15)

[ES] Este trabajo nace de la necesidad de solucionar los problemas que presentan los motores Zenoah G320RC (motor 2 tiempos para radio control) con los cambios de altura, ya que estos motores se encuentran instalados en ...
Effect of turbulence model and inlet boundary condition on the Diesel spray behavior simulated by an Eulerian Spray Atomization (ESA) model

Salvador Rubio, Francisco Javier; Gimeno García, Jaime; Pastor Enguídanos, José Manuel; Martí Aldaraví, Pedro (Elsevier, 2014-10)

Simulating liquid spray first and second atomization is not an easy task. Many models have been developed over the past years, but Eulerian ones have proved their better performance for the dense zone of the spray. In this ...
Evidence of vortex driven primary breakup in high pressure fuel injection

Shi, Junmei; Aguado Lopez, Pablo; Gomez Santos, Eduardo; Guerrassi, Noureddine; Dober, Gavin; Bauer, Wolfgang; Lai, Ming-Chia; Wang, Jin (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] This paper is to present a detailed case study on how the nozzle flow dynamics influences the primary breakup in the spray formation process of diesel injection. The investigation was based on a 3-hole real-application ...
Flow regime effects over non-cavitating diesel injection nozzles

Payri, Raul; Salvador, F.J.; Gimeno, Jaime; García Martínez, Antonio (SAGE PUBLICATIONS LTD, 2012)

[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 ...
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 ...
Numerical simulation of needle movement nozzle flow coupled with spray for a diesel injector using an Eulerian spray atomization model

Payri, Raul; Gimeno, Jaime; Marti-Aldaravi, Pedro; Alarcón-Herrera, Mary Yilbary (Springer-Verlag, 2017)

[EN] The injector dynamics have a strong impact on spray behavior, therefore on combustion efficiency and pollutant emissions. Nozzle flow and spray coupled simulations are useful tools to analyze the effect of nozzle ...
Study of the Gasoline Direct Injection Process under Novel Operating Conditions

Bautista Rodríguez, Abián (Universitat Politècnica de València, 2021-06-11)

[ES] La inyección de combustible es, entre los temas de investigación de motores, una de las piezas críticas para obtener un motor eficiente. El papel es aún más significativo cuando se persigue una estrategia de inyección ...
Verification of a new CFD compressible segregated and multi-phase solver with different flux updates-equations sequences

Payri, Raul; Ruiz Rosales, Santiago; Gimeno, Jaime; Marti-Aldaravi, Pedro (Elsevier, 2015-01-15)

A new solver capable of calculating liquid and/or gas problems has been developed, verified and validated. Compressible solvers in Computational Fluid Dynamics use both mass flux and volumetric fluxes through the cell ...