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Browsing by Subject "Ignition"

Now showing items 1-19 of 19

Analysis of the Influence of Diesel Spray Injection on the Ignition and Soot Formation in Multiple Injection Strategy

Payri, Raul; García-Oliver, José M; Mendoza, Victor; Viera, Alberto (MDPI AG, 2020-07)

[EN] Multiple injection strategies have increased their capabilities along with the evolution of injection system technologies up to the point that nowadays it is possible to inject eight different pulses, permitting to ...
Desarrollo de un sistema de supervisión y control de planta piloto

Escudero Peñalver, María (Universitat Politècnica de València, 2021-01-21)

[ES] Los sistemas de supervisión y control están sufriendo actualmente una gran evolución con la introducción de nuevas herramientas software. Cada vez son más la herramientas que abogan por el uso de protocolos standard ...
Design and optimization of the nozzle geometry of a high pressure hydrogen injector

Vilanova Prieto, Gonzalo (Universitat Politècnica de València, 2022-10-13)

[EN] Hydrogen, a clean-burning fuel with one of the highest energy densities, is seen as the future fuel, not only for automobile applications but also to generate electricity. The use of hydrogen to power internal ...
Diesel ignition delay and lift-off length through different methodologies using a multi-hole injector

Payri, Raul; Salvador Rubio, Francisco Javier; Manin, Julien; Viera Sotillo, Alberto Antonio (Elsevier, 2016-01-15)

In this paper, lift-off length has been measured via both broadband luminosity and OH chemiluminescence. In addition, ignition delay has also been measured via broadband chemiluminescence and Schlieren imaging. A 3 orifice ...
Diseño y desarrollo de sistema de supervisión de célula de fabricación con robot para aplicaciones logísticas

Castillo Setembre, Héctor (Universitat Politècnica de València, 2021-10-21)

[ES] El trabajo aborda el diseño y desarrollo de un sistema de supervisión que deberá proporcionar información sobre un proceso de fabricación completo sobre una planta piloto FESTO. Este proceso además de las estaciones ...
Estudio de un sistema de combustión por pre-cámara en una máquina de compresión-expansión

Fogué Robles, Álvaro (Universitat Politècnica de València, 2018-10-31)

[ES] Ante la creciente necesidad de reducir la emisión de contaminantes producidos durante la combustión en los motores de combustión interna que se encuentran de forma masi cada en las calles, existen numerosas vías de ...
Experimental and numerical study of lift-off length and ignition delay of a two-component diesel surrogate

Payri, Raul; Viera Sotillo, Juan Pablo; Pei, Yuanjiang; Som, Sibendu (Elsevier, 2015-10-15)

Understanding and controlling mixing and combustion processes is fundamental for the ever more demanding pollutant regulations and fuel consumption standards of direct injection diesel engines. The fundamentals of these ...
Experimental characterization of diesel ignition and lift-off length using a single-hole ECN injector

Benajes Calvo, Jesus Vicente; Payri Marín, Raúl; Bardi, Michele; Marti-Aldaravi, Pedro (Elsevier, 2013-09)

In this work, lift-off length and ignition delay have been measured via chemiluminescence techniques in a wide range of conditions for a single-hole injector from the Engine Combustion Network (ECN) dataset and using a ...
Experiments on the influence of intake conditions on local instantaneous heat flux in reciprocating internal combustion engines

Desantes, J.M.; Torregrosa, A. J.; Broatch, A.; Olmeda González, Pablo Cesar (Elsevier, 2011-01)

[EN] The present study tries to be a contribution for the development of more precise theoretical models for predicting the dissipation of heat through the combustion chamber walls of reciprocating (internal combustion) ...
Fundamental spray and combustion measurements of soy methyl-ester biodiesel

NERVA, JEAN-GUILLAUME; Genzale, Caroline L.; Kook, Sanghoon; García Oliver, José María; Pickett, Lyle M. (SAGE Publications (UK and US), 2013-08)

Although biodiesel has begun to penetrate the fuel market, its effect on injection processes, combustion and emission formation under diesel engine conditions remains somewhat unclear. Typical exhaust measurements from ...
Ignition and combustion development for high speed direct injection diesel engines under low temperature cold start conditions

Pastor Soriano, José Vicente; García Oliver, José María; Pastor Enguídanos, José Manuel; Ramírez Hernández, José Gustavo (Elsevier, 2011-04)

Diesel engine cold start is an important issue for current technology at low (below 0 °C) temperatures and for future applications. The aim of this work is to develop a description of how, when and where does fuel spray ...
Ignition process of a fluorescent tube

Antonino Daviu, José Alfonso (Universitat Politècnica de València, 2011-04-11)

The object describes the ignition process of a fluorescent tube which operates with the classical solution based on the use of starter and ballast. It explains the main elements taking part in the ignition process as well ...
Influence of nozzle geometry on ignition and combustion for high-speed direct injection diesel engines under cold start conditions

Desantes Fernández, José Mª; García Oliver, José María; Pastor Enguídanos, José Manuel; Ramírez Hernández, José Gustavo (Elsevier, 2011-11)

Starting at low temperatures (below 0 °C) is an important issue for current and near future diesel engine technology. Low ambient temperature causes long cranking periods or complete misfiring in small diesel engines and, ...
Influence of spray-glow plug configuration on cold start combustion for high-speed direct injection diesel engines

Pastor Soriano, José Vicente; Bermúdez, Vicente; García Oliver, José María; Ramírez Hernández, José Gustavo (Elsevier, 2011-09)

Glow plugs are currently the most employed solution to promote ignition in light-duty diesel engines during low temperature cold start. Improved knowledge about the mechanisms that control ignition and flame development ...
Investigation on Multiple Injection Strategies for Gasoline PPC Operation in a Newly Designed 2-Stroke HSDI Compression Ignition Engine

Benajes Calvo, Jesus Vicente; Novella Rosa, Ricardo; De Lima Moradell, Daniela Andreina; Tribotte, Pascal (SAE International, 2015-04)

Partially Premixed Combustion (PPC) of fuels in the gasoline octane range has proven its potential to achieve simultaneous reduction in soot and NOX emissions, combined with high indicated efficiencies; while still retaining ...
Proyecto de mejora de la eficiencia del proceso de encendido y combustión del combustible en motores de encendido provocado

Olabarrieta Salort, Jorge (Universitat Politècnica de València, 2019-09-18)

[ES] El trabajo tiene como objetivo global un análisis de la eficiencia térmica de la nueva generación de motores de encendido provocado, en particular en lo referente al encendido del combustible y el desarrollo del proceso ...
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 ...
The role of detailed chemical kinetics on CFD diesel spray ignition and combustion modelling

Novella Rosa, Ricardo; García Martínez, Antonio; Pastor Enguídanos, José Manuel; Domenech Llopis, Vicente (Elsevier, 2011-10)

Spray ignition and flame stabilisation in the frame of diesel-like combustion conditions combine fundamental and complex physical and chemical processes. In this work, a numerical investigation has been performed to evaluate ...
Theory of Stagnation-Point Spray Flame Ignition

Kats, Gershon; Greenberg, J. Barry (Editorial Universitat Politècnica de València, 2017-07-28)

[EN] A theory of stagnation-point spray flame ignition by an isothermal hot surface is presented for the first time. A mixture of fuel droplets and air flowing against an isothermal hot surface (such as a hot ignition ...