[EN] Widely recognized since the beginning of air travel as a major issue, noise reduction remains nowadays a pressing concern for all stakeholders in the aviation industry. While aeroengine compressors, specially at the ...
[EN] In this study, a methodology for the energy analysis of a lithium-ion battery module cooled by a serpentine cooling plate is proposed. A novel lumped electro-thermal model of a cooled module is calibrated and validated: ...
Donayre Ramírez, José Christian(Universitat Politècnica de València, 2013-01-07)
El proceso de combustión es una de las fuentes principales de ruido de los motores Diesel, debido al incremento brusco de la presión que provoca el autoencendido en la cámara de combustión. Este rápido incremento origina ...
Iniesta Carretero, Sergio(Universitat Politècnica de València, 2015-07-22)
[ES] El objetivo del proyecto es la definición y ejecución de un plan de ensayos para evaluar la viabilidad de la inyección múltiple con el fin de mejorar la estabilidad del motor K9K de Renault después del arranque a ...
Broatch, A.; Olmeda, P.; GARCIA TISCAR, JORGE; Felgueroso-Rodríguez, Andrés; Chávez-Modena, M.; González, L. M.; Gelain, M.; Couilleaux, A.(Elsevier, 2022-07)
[EN] Thermal management is a major challenge for new generation turbofan aero-engines. One of the most promising heat exchangers are the so-called surface air-cooled oil coolers (SACOCs). In this study, an experimental ...
[EN] As noise pollution remains one of the biggest hurdles posed by thermal engines, increasing efforts are made to alleviate the generation of combustion noise from the early design stage of the chamber. Since the complexity ...
Sánchez-Dehesa Moreno-Cid, José; Gao, Penglin; Cervera Moreno, Francisco Salvador; Broatch, A.; GARCIA TISCAR, JORGE; Felgueroso-Rodríguez, Andrés(American Institute of Physics, 2022-02-28)
[EN] This Letter reports the feasibility of a structure specifically designed for the control of flexural waves propagating in thin perforated plates. The structure, here denominated as a redirector device, consists of a ...
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 ...
[EN] Emissions control is a key topic for internal combustion engine development. One of the most widespread technologies to reduce the formation of nitrogen oxides is the recirculation of exhaust gas to the engine intake. ...
Wall-flow particulate filters have been placed as a standard technology for Diesel engines because of the increasing restrictions to soot emissions. The inclusion of this system within the exhaust line requires the development ...
[EN] This paper examines a common hypothesis in the design of internal combustion engine exhaust lines, namely that the ratio of the total pressure drop across the line to the inlet dynamic head should be a function only ...
Torregrosa, A. J.; Broatch, A.; Olmeda, P.; Cornejo, O.(Elsevier, 2014-01)
[EN] Subcooled boiling flow is specially attractive for engine cooling system design, as no essential changes in its architecture are required while it is still possible to take advantage of the highest rates of heat ...
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) ...
García Tíscar, Jorge(Editorial Universitat Politècnica de València, 2017-04-07)
As turbocharging requirements raise to face an increasingly stricter environmental regulation of internal combustion engines, concerns regarding their acoustic emission become more pressing. Since downsized engines require ...
The use of biodiesel fuels in diesel engines is gaining attention as a promising solution to control CO2
emissions. Great research efforts have been carried out to identify the impact of biodiesel physical and
chemical ...
[EN] Over recent decades, direct injection diesel engines have become the propulsion systems most commonly used in automotive vehicles in Europe. Their leading position in the European market is due to improvements in ...
[EN] Research efforts in the automotive sector focus on developing new combustion concepts for mitigating the emissions of nitrous oxides and soot of conventional Diesel combustion. One of the most promising concept is the ...
[EN] This paper reports the results of an experimental campaign where four different inlet geometries for the compressor of an automotive turbocharger were acoustically characterized. These four geometries (a straight pipe ...