[EN] In compliance with oncoming emission directives, turbocharging and increasing complexity in the turbocharger system demands a great effort from researchers on the development of effective procedures and tools to cope ...
Serrano Cruz, José Ramón; Olmeda González, Pablo Cesar; Arnau Martínez, Francisco José; Reyes Belmonte, Miguel Ángel; Tartoussi, Hadi(Elsevier, 2015-10-05)
Nowadays turbochargers play an important role in improving internal combustion engines (ICE) performance.
Usually, engine manufacturers use computer codes to predict the behaviour of both engine
and turbocharger, the ...
Torregrosa, A. J.; Broatch Jacobi, Jaime Alberto; Navarro García, Roberto; García Tíscar, Jorge(SAGE Publications (UK and US), 2015-01)
The performance of different experimental techniques proposed in the literature for acoustic characterization was
assessed through the study of the noise generated by the compressor of an automotive turbocharger under ...
[EN] The heat transfer model can be used in a one-dimensional (1-D) engine simulation. When the engine speed is reduced to zero, the codes have been upgraded to calculate transient turbocharger thermal conditions. The ...
Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin(Elsevier, 2019-08-01)
[EN] Pulsating flow in automotive turbocharger turbines makes it necessary to know performance characteristics in difficult to measure off-design conditions. Physically based extrapolation models can be used to extrapolate ...
García-Cuevas González, Luis Miguel(Universitat Politècnica de València, 2014-01-27)
[ES] Desde su introducción, la turbosobrealimentación ha permitido reducir el consumo y aumentar la potencia específica de los motores de combustión interna alternativos de forma notable. En los últimos años, debido a las ...
Galindo, José; Navarro, Roberto; Tarí, Daniel; García -Olivas, Guillermo(Elsevier, 2018-11-05)
[EN] State of the art techniques for reducing pollutant emission in internal combustion engines often require local
flow assessment, specially in the air management field. This work addresses the interaction between a ...
This paper presents a numerical study analyzing the effect of pulsating flow in a variable geometry radial inflow turbine. The turbine behavior is analyzed under isentropic pulses, which are similar to those created by a ...
[EN] The characterization of tip leakage flow plays an important role for one-dimesional loss modeling and design in radial turbine research. Tip leakage losses can be expressed as function of fluid momentum and mass flow ...
Serrano Cruz, José Ramón; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Dombrovsky, Artem; Tartoussi, H.(Elsevier, 2016-11-15)
Turbine performance at extreme off-design conditions is growing in importance for properly computing turbocharged reciprocating internal combustion engines behaviour during urban driving conditions at current and future ...
This paper presents the development and validation of a one-dimensional radial turbine model able to be
used in automotive turbocharger simulations. The model has been validated using results from a numerical
3D CFD ...
[EN] Bulk flow condensation caused by the mixing of air streams at different temperatures and humidities is a thermodynamic process that requires strong assumptions to be calculated with low computational effort. The ...
Algarra Carrasco, Víctor(Universitat Politècnica de València, 2013-03-09)
[ES] El presente TFM trata sobre el diagnóstico de fallos en turbogrupos, midiendo las prestaciones y vibraciones del mismo en una sala de ensayos o analizando únicamente su espectro vibratorio si está en condiciones de ...
Automotive turbocharger turbines usually work under pulsating flow because of the sequential nature of engine breathing. However, existing turbine models are typically based on quasi-steady assumptions. In this paper a ...
Aghaali, Habib; Angström, Hans-Erik; Serrano Cruz, José Ramón(SAGE Publications (UK and US), 2015-02)
This paper presents a combination of theoretical and experimental investigations for determining the main heat fluxes
within a turbocharger. These investigations consider several engine speeds and loads as well as different ...
Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Samala, Vishnu; Smith, Les(Elsevier, 2019-08)
[EN] In an internal combustion engine, twin entry turbine operates under different unequal admission conditions by feeding the turbine with a dissimilar amount of flow in each entry for a majority of the time. Despite of ...
Samala, Vishnu(Universitat Politècnica de València, 2020-10-29)
[ES] A pesar de la importancia de las turbinas radiales de doble entrada y doble voluta en el flujo para motores turboalimentados, sus mapas característicos y su modelado totalmente predictivo utilizando códigos dinámicos ...
Torregrosa, A. J.; Broatch Jacobi, Jaime Alberto; Margot , Xandra; García Tíscar, Jorge(Elsevier, 2016-08-18)
An experimental methodology is proposed to assess the noise emission of centrifugal turbocompressors like those of automotive turbochargers. A step-by-step procedure is detailed, starting from the theoretical considerations ...
Galindo, José; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Soler-Blanco, Pablo(SAGE Publications, 2018-07-20)
[EN] This article presents the experimental validation of a quasi-two-dimensional radial turbine model able to be used in turbocharged reciprocating internal combustion engine simulations. A passenger car variable-geometry ...
[EN] The behavior of small turbochargers is deeply affected by heat transfer phenomena. The external heat losses of these machines are studied and a simplified model that takes into account both radiation and convective ...