Characterization and prediction of the discharge coefficient of non-cavitating diesel injection nozzles
Fecha
Autores
Directores
Handle
https://riunet.upv.es/handle/10251/80758
Cita bibliográfica
Desantes Fernández, JM.; López, JJ.; Carreres Talens, M.; López-Pintor, D. (2016). Characterization and prediction of the discharge coefficient of non-cavitating diesel injection nozzles. Fuel. 184:371-381. https://doi.org/10.1016/j.fuel.2016.07.026
Titulación
Resumen
An experimental and theoretical study about the characterization of the discharge coefficient of diesel
injection nozzles under non-cavitating conditions is presented in this paper. A theoretical development
based on the boundary layer equations has been performed to define the discharge coefficient of a
convergent nozzle. The discharge coefficient has been experimentally obtained for a standard diesel fuel under a wide range of Reynolds numbers by two different techniques: mass flow rate measurements and permeability measurements. Five different nozzles have been used: two multi-hole nozzles that have been tested in the frame of this work, and three other single-hole nozzles, the data of which have been taken from previous studies. The experimental results show good agreement with the theoretical expressions, proving that it is possible to predict the discharge coefficient of a non-cavitating nozzle with the equations shown in this paper.
Palabras clave
Fuel injection, Diesel nozzle, Discharge coefficient, Internal flow
ISSN
0016-2361
ISBN
Fuente
Fuel
DOI
10.1016/j.fuel.2016.07.026
Versión del editor
http://dx.doi.org/10.1016/j.fuel.2016.07.026
dc.description.uri
Patrocinadores
Agradecimientos
The authors would like to thank different members of the CMT-Motores Termicos team of the Universitat Politecnica de Valencia for their contribution to this work, specially to R. Payri, F.J. Salvador, J. Gimeno and G. Bracho. This work was partly sponsored by "Ministerio de Economia y Competitividad" in the frame of the project "Comprension de la influencia de combustibles no convencionales en el proceso de inyeccion y combustion tipo diesel", reference TRA2012-36932. The equipment used in this work has been partially supported by FEDER project funds "Dotacion de infraestructuras cientifico tecnicas para el Centro Integral de Mejora Energetica y Medioambiental de Sistemas de Transporte (CiMeT), (FEDER-ICTS-2012-06)", in the frame of the operation program of unique scientific and technical infrastructure of the Ministry of Science and Innovation of Spain. This support is gratefully acknowledged by the authors. Finally, the authors would like to thank the Spanish Ministry of Education for financing the PhD. studies of Dario Lopez-Pintor (grant FPU13/02329).