Sánchez Bayona, Javier(Universitat Politècnica de València, 2023-11-03)
[ES] En las últimas décadas la relevancia de los nuevos combustibles alternativos ha aumentado considerablemente como respuesta a los problemas del calentamiento global y las emisiones contaminantes. La comunidad científica ...
Pascual-Ahuir Mata, Jorge Luis(Universitat Politècnica de València, 2023-07-11)
[ES] La consecución de una economía sin emisiones de carbono es el principal objetivo para reducir el cambio climático y sus peligrosos efectos. Dado que el principal contribuyente de estas emisiones es el transporte, ...
[EN] The pre-chamber ignition concept is an attractive strategy to enable the operation of spark-ignition engines in lean or diluted conditions keeping a suitable combustion process. According to the results the benefits ...
[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 ...
Los perfiles NACA de 4 dígitos, desarrollados por el National Advisory Committee for Aeronautics, se basan en una formulación matemática que define el concepto geométrico del perfil alar con cuatro parámetros según la ...
Olcina Girona, Miguel(Universitat Politècnica de València, 2022-10-27)
[ES] Los objetivos principales de este trabajo están alineados con la hoja ruta de reducir las emisiones de gases de efecto invernadero para descarbonizar la economía, siendo esta una de las principales metas para los ...
[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] In this paper, a numerical Computational Fluid Dynamics (CFD) study is carried out with the purpose of understanding how the injector design may impact on the in-cylinder processes, which cause noise emission. This ...
García del Toro, José Joaquín(Universitat Politècnica de València, 2022-10-14)
[ES] La preocupación por la contribución de los motores de combustión interna usados en el sector del transporte al calentamiento global y a la contaminación del medio ambiente está promoviendo el desarrollo de configuraciones ...
Margot, Xandra; Quintero-Igeño, Pedro-Manuel; Gómez-Soriano, Josep; Escalona-Cornejo, Johan Enrique(Elsevier, 2021-07-25)
[EN] The need to improve the thermal efficiency of gasoline engines used in hybrid vehicles, has led to explore new solutions for reducing engine heat losses. Hence, it is important for the car manufacturers to be able to ...
[EN] Passive pre-chamber ignition concept has been proven to be an excellent strategy to increase the ignition energy and enhance the combustion velocity even when spark-ignition engines are operating in diluted conditions. ...
[EN] This paper proposes an educational methodology for the development of the specific instrumental soft skill in Aerospace Engineering degree students. This methodology uses an autonomous and active learning approach to ...
[EN] Adverse effects of global warming due to the greenhouse gas emissions is changing the actual paradigm for the use energy resources. In the absence of a mid-term solution for reducing these emissions in transportation, ...
[EN] In this paper, the unsteady behaviour of a compression-ignited (CI) engine combustion chamber is studied by analysing the results of a Computational Fluid Dynamics (CFD) model through the application of different flow ...
Algarra García, Lola(Universitat Politècnica de València, 2023-09-14)
[ES] La consecución de una economía sin emisiones de carbono es el principal objetivo para reducir el cambio climático y sus peligrosos efectos. Dado que el principal contribuyente de estas emisiones es el transporte, ...
[EN] The achievement of a carbon-free emissions economy is one of the main goals to reduce climate change and its negative effects. Scientists and technological improvements have followed this trend, improving efficiency, ...
[EN] The use of advanced ignition concepts and enhanced combustion strategies is being widely studied for modern engine applications. In this framework, the passive pre-chamber ignition system is gaining popularity for its ...
Torregrosa, A. J.; Broatch, A.; Gil, A.; Gómez-Soriano, Josep(Elsevier, 2018-06)
[EN] Diesel combustion noise has become a crucial aspect for the engine manufacturers due to its impact on human health and influence on the customer purchasing decision. The interaction of the pressure waves after mixture ...
[EN] It is challenging to develop highly efficient and clean engines while meeting user expectations in terms of performance, comfort and drivability. One of the critical aspects in this regard is combustion noise control. ...
[EN] This paper presents a numerical methodology based on Computational Fluid Dynamics (CFD) simulations to understand the physics of heat losses through the cylinder walls coated with different materials, taking into ...