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Listar por autor "Serrano Cruz, José Ramón"

Mostrando ítems 1-20 de 160

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A fluid dynamic model for unsteady compressible flow in wall-flow diesel particulate filters

Torregrosa Huguet, Antonio José; Serrano Cruz, José Ramón; Arnau Martínez, Francisco José; Piqueras Cabrera, Pedro (Elsevier, 2011-01)

The use of particulate filters (DPF) in Diesel engines has become in recent years the standard technology for the control of soot aerosol emissions. Once emissions reduction through the management of filtration and ...
A holistic methodology to correct heat transfer and bearing friction losses from hot turbocharger maps in order to obtain adiabatic efficiency of the turbomachinery

Serrano, J.R.; Olmeda, P.; Arnau Martínez, Francisco José; Samala, Vishnu (SAGE Publications, 2020-10)

[EN] Turbocharger performance maps provided by manufacturers are usually far from the assumption of reproducing the isentropic performance. The reason being, those maps are usually measured using a hot gas stand. The ...
A Methodology for Measuring Turbocharger Adiabatic Maps in a Gas-Stand and Its Usage for Calibrating Control Oriented and One-Dimensional Models at Early ICE Design Stages

Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Gómez-Vilanova, Alejandro; Guilain, Stephane; Batard, Samuel (ASME International, 2021-04-01)

[EN] In this work, a methodology is proposed to standardize turbochargers testing based on measuring the maps twice: in close to adiabatic and in diathermal conditions. Along the paper, it is discussed with special detail ...
A methodology to study oil-coking problem in small turbochargers

Serrano, J.R.; Tiseira, Andrés-Omar; García-Cuevas González, Luis Miguel; Rodriguez-Usaquen, Yuly Tatiana; Guillaume, Mijotte (SAGE Publications, 2020-09-01)

[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 ...
A modelling tool for engine and exhaust aftertreatment performance analysis in altitude operation

Serrano, J.R.; Piqueras, P.; Sanchis-Pacheco, Enrique José; Diesel Costa, Bárbara (Elsevier, 2019-12)

[EN] New regulation standards on engine pollutant emissions are widening the engine operating conditions subjected to type approval tests as a way to prevent from the gap between regulated and real-driving emissions. In ...
A physically based methodology to extrapolate performance maps of radial turbines

Payri González, Francisco; Serrano Cruz, José Ramón; Fajardo, Pablo; Reyes Belmonte, Miguel Ángel; Gozalbo Belles, Ricardo (Elsevier, 2012-03)

This paper details a physically based methodology to perform an extrapolation of the radial turbine performance maps, both mass flow characteristics and the efficiency curve. This method takes into account a narrow range ...
A Robust Adiabatic Model for a Quasi-Steady Prediction of Far-Off Non-Measured Performance in Vaneless Twin-Entry or Dual-Volute Radial Turbines

Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Samala, Vishnu (MDPI AG, 2020-03)

[EN] The current investigation describes in detail a mass flow oriented model for extrapolation of reduced mass flow and adiabatic efficiency of double entry radial inflow turbines under any unequal and partial flow admission ...
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 ...
Adaptación de un motor Diesel de vehículo pesado sobrealimentado en doble etapa a las normativas europea (Euro 4) y americana (US 10) de emisiones

Hidalgo Olmos, Silvia (Universitat Politècnica de València, 2014-05-27)

Proyecto Confidencial
Adaptation of a 1-D tool to study transient thermal in turbocharger bearing housing

Serrano, J.R.; Tiseira, Andrés-Omar; García-Cuevas González, Luis Miguel; Rodriguez-Usaquen, Yuly Tatiana (Elsevier, 2018)

[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 ...
Advanced exergy analysis of a Reverse Brayton cycle using air as working fluid for cryogenic purposes

Serrano, J.R.; Dolz, Vicente; Gómez-Vilanova, Alejandro; López-Carrillo, Juan Antonio (Elsevier, 2024-03)

[EN] The global push to reduce greenhouse gas emissions has led to the ban of high global warming potential (GWP) refrigerants in the refrigeration sector, prompting the adoption of low-GWP alternatives. However, as ...
An Experimental and Modeling Strategy for Obtaining Complete Characteristic Maps of Dual-Volute Radial Inflow Turbines

Serrano, J.R.; Arnau Martínez, Francisco José; García-Cuevas González, Luis Miguel; Samala, Vishnu; Guilain, Stephane; Batard, Samuel (ASME International, 2021-07-01)

[EN] Despite the importance of turbocharged engines with dual-volute turbines, their characteristic maps and fully predictive modeling using 1D gas dynamic codes are not well established yet. The complexity of unsteady ...
An innovative losses model for efficiency map fitting of vaneless and variable vaned radial turbines extrapolating towards extreme off-design conditions

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 ...
An on-engine method for dynamic characterisation of NOx concentration sensors

Galindo, José; Serrano Cruz, José Ramón; Guardiola, Carlos; Blanco-Rodriguez, David; Cuadrado, I.G. (Elsevier, 2011-04)

An on-engine method for dynamic characterisation of automotive NOx concentration sensors is presented. Steps in start of injection on a diesel engine are employed to achieve step-like NOx concentration variations on exhaust ...
Analysis and Methodology to Characterize Heat Transfer Phenomena in Automotive Turbochargers

Serrano Cruz, José Ramón; Olmeda González, Pablo Cesar; Arnau Martínez, Francisco José; Dombrovsky, A.; Smith, L. (American Society of Mechanical Engineers (ASME), 2015-02)

In the present work a comprehensive study of turbocharger heat transfer phenomena is discussed, showing their relevance compared to gas enthalpy variations through the turbomachinery. The study provides an experimental ...
Analysis of a novel concept of 2-stroke rod-less opposed pistons engine (2S-ROPE): Testing, modelling, and forward potential

Serrano, J.R.; Arnau Martínez, Francisco José; Bares-Moreno, Pau; Gómez-Vilanova, Alejandro; Garrido-Requena, J.; Luna-Blanca, M. J.; Contreras-Anguita, F. J. (Elsevier, 2021-01-15)

[EN] As pollutants and fuel consumption requirements become more constraining, new internal combustion engines generation arise to fulfill future automobile market regulations. In these context spark ignition (SI) engines ...
Analysis of Altitude and Ambient Temperature Effects on the Reactivity of Oxidation Catalysts in the Presence of H2

Serrano, J.R.; Piqueras, P.; Sanchis, Enrique José; Conde-Cortabitarte, Carla (MDPI AG, 2024-06)

[EN] Worldwide emission standards are now required to cover engine operation under extreme ambient conditions, which affect the raw emissions and the efficiency of the exhaust aftertreatment systems. These regulations also ...
Analysis of fluid-dynamic guidelines in diesel particulate filter sizing for fuel consumption reduction in post-turbo and pre-turbo placement

Serrano Cruz, José Ramón; Climent Puchades, Héctor; Piqueras Cabrera, Pedro; Angiolini, Emanuele (Elsevier, 2014-11-01)

Wall-flow particulate filters are in the present days a standard aftertreatment system widely used in diesel engines to reduce particle emissions and meet emission regulations. This paper deals with the analysis of the ...
Analysis of Passenger Car Turbocharged Diesel Engines Performance When Tested at Altitude and of the Altitude Simulator Device Used

Broatch, A.; Bermúdez, Vicente; Serrano, J.R.; Tabet, Roberto; Gómez, Javier; Bender, Stefan (ASME International, 2019-08)

[EN] According to current worldwide trends for homologation vehicles in real driving conditions is forced to test the engines in altitude and in highly dynamic driving cycles in order to approach nowadays and next future ...
Analysis of shock capturing methods for chemical species transport in unsteady compressible flow

Serrano Cruz, José Ramón; Climent, H.; Piqueras, P.; García Afonso, Óscar (Elsevier, 2013-04)

This paper presents a chemical species transport model to account for variable composition and gas properties along the flow path in internal combustion engines. The numerical solution to adapt the gas dynamic model to ...