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Your search keyword '"Gómez-Soriano, Josep"' showing total 2 results
Start Over Author "Gómez-Soriano, Josep" Journal international journal of engine research
2 results on '"Gómez-Soriano, Josep"'

1. A one-dimensional modeling study on the effect of advanced insulation coatings on internal combustion engine efficiency

Author

Broatch, A., Olmeda, P., Margot, Xandra Marcelle, and Gómez-Soriano, Josep

Subjects
Computer science, 020209 energy, media_common.quotation_subject, Aerospace Engineering, Ocean Engineering, 02 engineering and technology, Insulation coatings, 7. Clean energy, Disk formatting, 0203 mechanical engineering, Heat transfer, Engine efficiency, 0202 electrical engineering, electronic engineering, information engineering, Quality (business), media_common, Mechanical Engineering, INGENIERIA AEROESPACIAL, Dimensional modeling, One-dimensional thermal modeling, 020303 mechanical engineering & transports, Work (electrical), Internal combustion engine, MAQUINAS Y MOTORES TERMICOS, Automotive Engineering, Systems engineering
Abstract

[EN] This article presents a study of the impact on engine efficiency of the heat loss reduction due to in-cylinder coating insulation. A numerical methodology based on one-dimensional heat transfer model is developed. Since there is no analytic solution for engines, the one-dimensional model was validated with the results of a simple "equivalent" problem, and then applied to different engine boundary conditions. Later on, the analysis of the effect of different coating properties on the heat transfer using the simplified one-dimensional heat transfer model is performed. After that, the model is coupled with a complete virtual engine that includes both thermodynamic and thermal modeling. Next, the thermal flows across the cylinder parts coated with the insulation material (piston and cylinder head) are predicted and the effect of the coating on engine indicated efficiency is analyzed in detail. The results show the gain limits, in terms of engine efficiency, that may be obtained with advanced coating solutions., The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The equipment used in this work has been partially supported by FEDER project funds "otacion de infraestructuras cientifico tecnicas para el Centro Integral de Mejora Energetica y Medioambiental de Sistemas de Transporte (CiMeT)'' (Grant No. FEDER-ICTS-2012-06), framed in the operational program of unique scientific and technical infrastructure of the Spanish Government. This project has received funding from the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 724084.

Published
2020

2. Understanding the unsteady pressure field inside combustion chambers of compression-ignited engines using a computational fluid dynamics approach

Author

Torregrosa, A. J., Broatch, A., Margot, Xandra, and Gómez-Soriano, Josep

Subjects
Combustion noise, 020209 energy, Aerospace Engineering, Mechanical engineering, Ocean Engineering, 02 engineering and technology, Computational fluid dynamics, Resonance, Pressure field, Physics::Fluid Dynamics, Software, 0203 mechanical engineering, 0202 electrical engineering, electronic engineering, information engineering, Computational fluid dynamics modelling, Physics::Chemical Physics, Physics, business.industry, Mechanical Engineering, INGENIERIA AEROESPACIAL, Compression (physics), Compression ignition engine, 020303 mechanical engineering & transports, MAQUINAS Y MOTORES TERMICOS, Automotive Engineering, Frequency analysis, Combustion chamber, business
Abstract

[EN] In this article, a numerical methodology for assessing combustion noise in compression ignition engines is described with the specific purpose of analysing the unsteady pressure field inside the combustion chamber. The numerical results show consistent agreement with experimental measurements in both the time and frequency domains. Nonetheless, an exhaustive analysis of the calculation convergence is needed to guarantee an independent solution. These results contribute to the understanding of in-cylinder unsteady processes, especially of those related to combustion chamber resonances, and their effects on the radiated noise levels. The method was applied to different combustion system configurations by modifying the spray angle of the injector, evidencing that controlling the ignition location through this design parameter, it is possible to decrease the combustion noise by minimizing the resonance contribution. Important efficiency losses were, however, observed due to the injector/bowl matching worsening which compromises the performance and emissions levels., The authors want to express their gratitude to CONVERGENT SCIENCE Inc. and Convergent Science GmbH for their kind support for performing the CFD calculations using CONVERGE software.

Published
2018

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