Payri, Raul; García-Oliver, José M; Mendoza, Victor; Viera, Alberto(MDPI AG, 2020-07)
[EN] Multiple injection strategies have increased their capabilities along with the evolution of injection system technologies up to the point that nowadays it is possible to inject eight different pulses, permitting to ...
Pérez Puyol, Pablo(Universitat Politècnica de València, 2017-09-25)
Nowadays piezoelectric injectors are in development due to its fast action compared to tradi-
tional solenoid injectors. In the investigation field there is not a complete understanding about
its operation yet and it ...
Payri, Raul; Salvador Rubio, Francisco Javier; Manin, Julien; Viera Sotillo, Alberto Antonio(Elsevier, 2016-01-15)
In this paper, lift-off length has been measured via both broadband luminosity and OH chemiluminescence. In addition, ignition delay has also been measured via broadband chemiluminescence and Schlieren imaging. A 3 orifice ...
Payri, Raul; Salvador, Francisco Javier; Bracho Leon, Gabriela; Viera-Sotillo, Alberto Antonio(Elsevier, 2017-10)
[EN] The use olschlieren imaging at high acquisition rate has been adopted as a standard optical technique for the analysis of vaporizing diesel sprays under engine-like conditions. A single-pass schlieren arrangement is ...
Viera Sotillo, Alberto Antonio(Universitat Politècnica de València, 2019-07-22)
[ES] En los últimos años, la evolución de las tecnologías de inyección ha permitido no solo mejorar el proceso de mezcla, sino también controlar con precisión los parámetros de inyección, agregando flexibilidad a los ...
Payri, Raul; Marti-Aldaravi, Pedro; Montiel-Prieto, Tomas; Viera, Alberto(Elsevier, 2020-11-25)
[EN] Multiple injection strategies have contributed to the improvement of thermal processes in Internal Combustion Engines. On this matter, the correct performance of the injector is a critical factor in the implementation ...
Payri, Raul; Gimeno, Jaime; Marti-Aldaravi, Pedro; Viera, Alberto(SAGE Publications, 2021-04)
[EN] As legislations set very stringent environmental and fuel economy standards, researchers have pushed into a continuous development in all areas of the diesel engine. The recent evolution of the injection technologies ...
Viera Sotillo, Alberto Antonio(Universitat Politècnica de València, 2016-07-22)
[EN] This research is divided into two different set of experimental measurements. First combustion measurements of lift-off length were done via both broadband luminosity and OH chemiluminescence. In addition, ignition ...
Payri, Raul; Bracho Leon, Gabriela; Marti-Aldaravi, Pedro; Viera-Sotillo, Alberto Antonio(Begell House Inc., 2017)
[EN] Accurate experimental data are often needed to validate computational fluid dynamics models. These models regularly rely on experimental results from single-orifice axially drilled nozzles that do not fully represent ...
Sechenyh, Vitaliy; Turner, Jack; Sykes, Dan; Duke, Daniel; Swantek, Andrew; Matusik, Katarzyna; Kastengren, Alan; Powell, Christopher; Viera Sotillo, Alberto Antonio; Payri, Raul; Crua, Cyril(Editorial Universitat Politècnica de València, 2017-07-28)
[EN] Post-injection dribble is known to lead to incomplete atomisation and combustion due to the release of slow
moving, and often surface-bound, liquid fuel after the end of the injection event. This can have a negative ...
Sechenyh, Vitaliy; Duke, Daniel J.; Swantek, Andrew B.; Matusik, Katarzyna E.; Kastengren, Alan L.; Powell, Christopher F.; Viera, Alberto; Payri, Raul; Crua, Cyril(SAGE Publications, 2020-01)
[EN] Post-injection fuel dribble is known to lead to incomplete atomisation and combustion due to the release of slow-moving, and often surface-bound, liquid fuel after the end of injection. This can have a negative effect ...
Payri, Raul; Gimeno, Jaime; Mata, Carmen; Viera-Sotillo, Alberto Antonio(Elsevier, 2017-12-15)
[EN] As the regulations for pollutant emissions in diesel engines are increasingly restrictive, the introduction of the piezoelectric direct-acting injectors seeks to improve the overall efficiency of the injection system, ...
Payri, Raul; Salvador, Francisco Javier; Abboud, Rami; Viera, Alberto(Elsevier, 2020-07-25)
[EN] Internal combustion engines have witnessed an ever increasing stringency in emission limits and fuel economy regulations that has continuously provoked researchers to develop complex strategies that enables engines ...
Payri, Raul; Salvador Rubio, Francisco Javier; Bracho León, Gabriela Cristina; Viera Sotillo, Alberto Antonio(Editorial Universitat Politècnica de València, 2017-07-28)
[EN] Schlieren imaging has been adopted as a standard optical technique for the analysis of diesel sprays under engine
like conditions. A single-pass Schlieren arrangement is typically used for the study of single-orifice ...