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Browsing by Subject "Turbocharger"

Now showing items 1-20 of 21

A study on the internal convection in small turbochargers. Proposal of heat transfer convective coefficients

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 ...
Acoustic characterization of automotive turbocompressors

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 ...
Caracterización teórico-experimental de turbocompresores de automoción

García-Cuevas González, Luis Miguel (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 ...
Characterization of a radial turbocharger turbine in pulsating flow by means of CFD and its application to engine modeling

Galindo, José; Fajardo, Pablo; Navarro García, Roberto; García-Cuevas González, Luis Miguel (Elsevier, 2013-03)

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 ...
Development and validation of a radial turbine efficiency and mass flow model at design and off-design conditions

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 ...
Development and validation of a radial variable geometry turbine model for transient pulsating flow applications

Galindo, José; Tiseira Izaguirre, Andrés Omar; Fajardo, P.; García-Cuevas González, Luis Miguel (Elsevier, 2014-09)

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 ...
Diagnóstico de fallos en turbogrupos de sobrealimentación de motores, con un banco de turbos de flujo continuo, y mediante vibraciones en condiciones de servicio.

Algarra Carrasco, Víctor (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 ...
Effect of the numerical scheme resolution on quasi-2D simulation of an automotive radial turbine under highly pulsating flow

Galindo, José; Climent, H.; Tiseira Izaguirre, Andrés Omar; García-Cuevas González, Luis Miguel (Elsevier, 2016-01-01)

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 ...
Evaluation of different heat transfer conditions on an automotive turbocharger

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 ...
Experimental methodology for turbocompressor in-duct noise evaluation based on beamforming wave decomposition

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 ...
External heat losses in small turbochargers: Model and experiments

Payri González, Francisco; Olmeda, P.; Arnau Martínez, Francisco José; Dombrovsky, Artem; Smith, Les (Elsevier, 2014-07-15)

[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 ...
Influence of tip clearance on flow behavior and noise generation of centrifugal compressors in near-surge conditions

Galindo, José; Tiseira Izaguirre, Andrés Omar; Navarro García, Roberto; López Hidalgo, Miguel Andrés (Elsevier, 2015-04)

CFD has become an essential tool for researchers to analyze centrifugal compressors. Tip leakage flow is usually considered one of the main mechanisms that dictate compressor flow field and stability. However, it is a ...
Numerical Study of the Implementation of an Active Control Turbocharger on Automotive Diesel Engines

Galindo Lucas, José; Dolz Ruiz, Vicente; Tiseira Izaguirre, Andrés Omar; Gozalbo Belles, Ricardo (American Society of Mechanical Engineers (ASME), 2013-05)

Active control turbocharger (ACT) has been proposed as a way to improve turbocharger performance under highly pulsating exhaust flows. This technique implies that the variable geometry mechanism in the turbine is used ...
Radial turbine performance measurement under extreme off-design Conditions

Serrano, J.R.; Tiseira, Andrés Omar; García-Cuevas González, Luis Miguel; Inhestern, Lukas Benjamin; Tartoussi, H. (Elsevier, 2017)

[EN] During automotive urban driving conditions and future homologation cycles, automotive radial turbines experience transient conditions, whereby the same operate at very high blade speed ratios and, thus, at very low ...
Study of the turbocharger shaft motion by means of infrared sensors

Serrano Cruz, José Ramón; Guardiola, Carlos; Dolz García, Vicente Manuel; López, M.A.; Bouffaud, F. (Elsevier, 2015-05)

This work describes a technique for measuring the precession movement of the shaft of small automotive turbochargers. The main novelty is that the technique is based on infrared light diode sensors. With presented technique ...
Study of turbocharger shaft motion by means of non-invasive optical techniques: Application to the behaviour analysis in turbocharger lubrication failures

Pastor, José V.; Serrano, J.R.; Dolz, Vicente; López Hidalgo, M.A.; BOUFFAUD, F. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2012)

[EN] This paper presents a novel non-invasive technique to estimate the turbocharger shaft whirl motion. The aim of this article is to present a system for monitoring the shaft motion of a turbocharger, which will be used ...
Synthesis of the 1D modelling of turbochargers and its effects on engine performance prediction

Dombrovsky, Artem (2017-06-05)

Low fuel consumption is one of the main requirement for current internal combustion engines for passenger car applications. One of the most used strategies to achieve this goal is to use downsized engines (smaller engines ...
Theoretical and experimental study of mechanical losses in automotive turbochargers

Serrano Cruz, José Ramón; Olmeda González, Pablo Cesar; Tiseira Izaguirre, Andrés Omar; García-Cuevas González, Luis Miguel; Lefebvre, Alain (Elsevier, 2013-06-15)

The aim of the present work is to show an approximation, through an experimental an theoretical study, to quantify the mechanical losses in a turbocharging system. These are linked to the dynamics in the turbo shaft ...
Turbine adapted maps for turbocharger engine matching

Tancrez, M; Galindo, José; Guardiola, Carlos; Fajardo, Pablo; VARNIER, OLIVIER (Elsevier, 2011-01)

This paper presents a new representation of the turbine performance maps oriented for turbocharger characterization. The aim of this plot is to provide a more compact and suited form to implement in engine simulation models ...
Turbocharger heat transfer and mechanical losses influence in predicting engines performance by using one-dimensional simulation codes

Serrano Cruz, José Ramón; Olmeda González, Pablo Cesar; Arnau Martínez, Francisco José; Dombrovsky, Artem; Smith, Les (Elsevier, 2015-06-15)

The exhaust energy can represent up to 40% of the fuel chemical energy in turbocharged internal combustion engines. In order to calculate properly the available energy of the exhaust gases, a critical parameter is the ...