Gimenez, Blanca; Melgar, Andrés; Horrillo, Alfonso; Tinaut-Fluixá, Francisco Vicente(Elsevier, 2021-01)
[EN] An analysis of the turbulent premixed combustion speed in an internal combustion engine using natural gas, hydrogen and intermediate mixtures as fuels is carried out, with different air-fuel ratios and engine speeds. ...
Burgos Moreno, Luna(Universitat Politècnica de València, 2020-05-05)
[ES] Esta tesis considera el impacto de los fallos en términos del efecto que estos tienen en el valor del sistema. Se desarrolla un modelo analítico que cuantifica el valor neto actual del sistema bajo unas condiciones ...
Estrela Colomina, María Eugenia(Universitat Politècnica de València, 2020-09-25)
[ES] El trabajo se centrará en el diseño conceptual y la evaluación de actuaciones de configuraciones de aeronaves híbridas-eléctricas. Análisis convencionales de restricciones y misión se integrarán con un modelo de planta ...
It has lately been demonstrated that the resonance of the in-cylinder pressure may be
used for inferring the trapped mass in an internal combustion engine. The resonance
frequency changes over time as the expansion stroke ...
[EN] Knock control represents one of the most critical aspects to reach optimal thermal efficiency in spark ignition engines, and its research is crucially important because it determines thermal efficiency, engine durability, ...
[EN] The increasingly stringent emissions regulations and the climatic change as consequence of green house gases emissions have moved the research interest towards the optimization of the internal combustion engine. Hence, ...
Abouali Sánchez, Said(Universitat Politècnica de València, 2020-04-27)
[ES] Las empresas y las organizaciones están avanzando hacia una transformación digital. En este contexto, su necesidad de Analistas de Datos de Negocios, los empleados que entienden y manejan la creciente cantidad de ...
[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 ...
[EN] A multi-rate non-isothermal kinetic analysis of the isotropic-melt to liquid crystalline phase transition of novel liquid crystalline ionogenic copolymers, LCIs, the 10-(4-methoxyazobenzene-4'-oxy)decyl methacrylate ...
Hoyas, S; Gil, A.; Mompó Laborda, Juan Manuel; Khuong ., Anh Dung(Inderscience, 2011)
[EN] Some aspects of the transient evolution of diesel-like gas jets by means of large-eddy simulation (LES) are discussed in this work. In order to understand the relationship between the inlet boundary condition and the ...
Look-up tables are commonly used in the automotive field for handling operating point variations. However, constant maps cannot cope with systems variations and ageing. Methods, such as Kalman filter or Extended Kalman ...
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 ...
Badía Valiente, José David; Santonja Blasco, Laura; Martinez-Felipe, Alfonso; Ribes Greus, María Desamparados(Elsevier, 2012-05)
The energetic valorization process of bio-based polymers is addressed in this study, taking polylactide (PLA) as model. The pyrolysis of virgin and multiple-injected PLA was simulated by means of multi-rate linear-non-isothermal ...
[EN] Reducing mechanical losses in internal combustion engines has been a recurrent research topic over the past few decades. Despite mechanical losses are a key issue that should be carefully addressed to reduce fuel ...
[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 ...
Galindo, José; Climent, H.; De La Morena, Joaquín; Pitarch-Berná, Rafael; Guilain, Stephane; Besançon, Thomas(Elsevier, 2021-12-15)
[EN] Several technologies are being put in place to improve the efficiency of spark-ignition engines. Two of these technologies are variable valve actuation and exhaust gas recirculation, both of which can have an impact ...
[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 ...
[EN] The ability to handle complex geometries is an important part of transient calculations; therefore, the need for fully automatic mesh generation capable of dealing with such geometries is quite demanded. In this paper ...
Payri, Raul; Gimeno, Jaime; Marti-Aldaravi, Pedro; Alarcón-Herrera, Mary Yilbary(Elsevier, 2017)
[EN] Thermal effects on internal combustion engines have been always a hot topic. Its effects also on the injection system are still under research. In this work, a homogeneous model called Eulerian Spray Atomization (ESA) ...
[EN] In this paper, the knock phenomenon is studied and characterized in the time-frequency domain. From the analysis results, a new knock event definition is proposed, which compares the excitation of the cylinder resonance ...