Eccentric needle motion effect on near-nozzle dynamics of diesel spray
Abstract
Here, the eccentric needle motion has been regarded as an important cause of in-nozzle flow disturbances and hole-to-hole spray variations of modern fuel injectors. However, the experimental investigations on this subject have rarely been reported due to great difficulties in the direct measurements of eccentric needle motion and the flow characteristics of individual holes in an injection nozzle. In this study, the axial and eccentric needle motion and the ear-nozzle spray dynamics of 3-hole, 5-hole and 8-hole diesel injection nozzles were investigated in varied injection pressure conditions using an xray phase-contrast imaging technique. The eccentric needle motion and near-nozzle spray axial velocity showed temporal oscillations during the injection with different oscillation frequencies. The frequencies of these two oscillations were independent to the nozzle and injection pressure. To discuss the mutual dependency of these two oscillations, the time traces of the spray axial velocity were measured for individual holes. The results showed that the oscillation phase, frequency and amplitude of the spray axial velocity were almost identical for all holes, which indicated that the sac pressure variation rather than hole-to-hole flow variation can be the primary cause of the spray axial velocity oscillation by the eccentric needle motion. The adequacy ofmore »
- Authors:
-
- National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- Isuzu Motors Ltd.; USDOE
- OSTI Identifier:
- 1461350
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Fuel
- Additional Journal Information:
- Journal Volume: 206; Journal Issue: C; Journal ID: ISSN 0016-2361
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; diesel injector; diesel spray; eccentric needle motion; spray axial velocity; X-ray phase-contrast imaging
Citation Formats
Huang, Weidi, Moon, Seoksu, Gao, Ya, Li, Zhilong, and Wang, Jin. Eccentric needle motion effect on near-nozzle dynamics of diesel spray. United States: N. p., 2017.
Web. doi:10.1016/j.fuel.2017.06.012.
Huang, Weidi, Moon, Seoksu, Gao, Ya, Li, Zhilong, & Wang, Jin. Eccentric needle motion effect on near-nozzle dynamics of diesel spray. United States. https://doi.org/10.1016/j.fuel.2017.06.012
Huang, Weidi, Moon, Seoksu, Gao, Ya, Li, Zhilong, and Wang, Jin. 2017.
"Eccentric needle motion effect on near-nozzle dynamics of diesel spray". United States. https://doi.org/10.1016/j.fuel.2017.06.012. https://www.osti.gov/servlets/purl/1461350.
@article{osti_1461350,
title = {Eccentric needle motion effect on near-nozzle dynamics of diesel spray},
author = {Huang, Weidi and Moon, Seoksu and Gao, Ya and Li, Zhilong and Wang, Jin},
abstractNote = {Here, the eccentric needle motion has been regarded as an important cause of in-nozzle flow disturbances and hole-to-hole spray variations of modern fuel injectors. However, the experimental investigations on this subject have rarely been reported due to great difficulties in the direct measurements of eccentric needle motion and the flow characteristics of individual holes in an injection nozzle. In this study, the axial and eccentric needle motion and the ear-nozzle spray dynamics of 3-hole, 5-hole and 8-hole diesel injection nozzles were investigated in varied injection pressure conditions using an xray phase-contrast imaging technique. The eccentric needle motion and near-nozzle spray axial velocity showed temporal oscillations during the injection with different oscillation frequencies. The frequencies of these two oscillations were independent to the nozzle and injection pressure. To discuss the mutual dependency of these two oscillations, the time traces of the spray axial velocity were measured for individual holes. The results showed that the oscillation phase, frequency and amplitude of the spray axial velocity were almost identical for all holes, which indicated that the sac pressure variation rather than hole-to-hole flow variation can be the primary cause of the spray axial velocity oscillation by the eccentric needle motion. The adequacy of this consideration was thoroughly discussed using a mass balance model in the nozzle sac that predicted the sac pressure variation during an injection event.},
doi = {10.1016/j.fuel.2017.06.012},
url = {https://www.osti.gov/biblio/1461350},
journal = {Fuel},
issn = {0016-2361},
number = C,
volume = 206,
place = {United States},
year = {Thu Jun 29 00:00:00 EDT 2017},
month = {Thu Jun 29 00:00:00 EDT 2017}
}
Web of Science
Works referenced in this record:
Imaging in the optically dense regions of a spray: A review of developing techniques
journal, October 2013
- Linne, Mark
- Progress in Energy and Combustion Science, Vol. 39, Issue 5
Ultra-high speed imaging study of the diesel spray close to the injector tip at the initial opening stage with single injection
journal, March 2016
- Wang, Ziman; Ding, Haichun; Ma, Xiao
- Applied Energy, Vol. 165
Effect of nozzle orifice geometry on spray, combustion, and emission characteristics under diesel engine conditions
journal, March 2011
- Som, Sibendu; Ramirez, Anita I.; Longman, Douglas E.
- Fuel, Vol. 90, Issue 3
Influence of injector technology on injection and combustion development – Part 1: Hydraulic characterization
journal, April 2011
- Payri, R.; Salvador, F. J.; Gimeno, J.
- Applied Energy, Vol. 88, Issue 4
Comparison of microsac and VCO diesel injector nozzles in terms of internal nozzle flow characteristics
journal, October 2015
- Salvador, F. J.; Carreres, M.; Jaramillo, D.
- Energy Conversion and Management, Vol. 103
Effect of the number and position of nozzle holes on in- and near-nozzle dynamic characteristics of diesel injection
journal, June 2015
- Moon, Seoksu; Gao, Yuan; Park, Suhan
- Fuel, Vol. 150
Near-field dynamics of high-speed diesel sprays: Effects of orifice inlet geometry and injection pressure
journal, October 2014
- Moon, Seoksu; Gao, Yuan; Wang, Jin
- Fuel, Vol. 133
Unraveling the Geometry Dependence of In-Nozzle Cavitation in High-Pressure Injectors
journal, June 2013
- Im, Kyoung-Su; Cheong, Seong-Kyun; Powell, Christopher F.
- Scientific Reports, Vol. 3, Issue 1
A Linear optical sensor for measuring needle displacement in common-rail diesel injectors
journal, March 2007
- Coppo, Marco; Dongiovanni, Claudio; Negri, Claudio
- Sensors and Actuators A: Physical, Vol. 134, Issue 2
A New Optical Sensor for the Measurement of the Displacement of the Needle in a Common Rail Injector
conference, September 2013
- Amirante, Riccardo; Catalano, Luciano A.; Coratella, Carlo
- 11th International Conference on Engines & Vehicles, SAE Technical Paper Series
Near-nozzle dynamics of diesel spray under varied needle lifts and its prediction using analytical model
journal, September 2016
- Huang, Weidi; Moon, Seoksu; Ohsawa, Katsuyuki
- Fuel, Vol. 180
Needle lift profile influence on the vapor phase penetration for a prototype diesel direct acting piezoelectric injector
journal, November 2013
- Payri, Raul; Gimeno, Jaime; Viera, Juan P.
- Fuel, Vol. 113
Study of the influence of the needle lift on the internal flow and cavitation phenomenon in diesel injector nozzles by CFD using RANS methods
journal, February 2013
- Salvador, F. J.; Martínez-López, J.; Caballer, M.
- Energy Conversion and Management, Vol. 66
Numerical study of the effects of injector needle movement and the nozzle inclination angle on the internal fluid flow and spray structure of a group-hole nozzle layout
journal, December 2015
- Taghavifar, Hadi; Shervani-Tabar, Mohammad Taghi; Abbasalizadeh, Majid
- Applied Mathematical Modelling, Vol. 39, Issue 23-24
Numerical Modelling of the In-Nozzle Flow of a Diesel Injector with Moving Needle during and after the End of a Full Injection Event
journal, January 2015
- Papadopoulos, Nikolaos; Aleiferis, Pavlos
- SAE International Journal of Engines, Vol. 8, Issue 5
Cavitation in Real-Size Multi-Hole Diesel Injector Nozzles
conference, March 2000
- Arcoumanis, C.; Flora, H.; Gavaises, M.
- SAE 2000 World Congress, SAE Technical Paper Series
Influence of the Spatially Resolved Nozzle Hole Exit Flow Distribution on Diesel Spray Development
conference, September 2007
- Spathopoulou, M.; Papoulias, D.; Giannadakis, E.
- 8th International Conference on Engines for Automobiles, SAE Technical Paper Series
High-Speed X-Ray Imaging of Diesel Injector Needle Motion
conference, August 2009
- Kastengren, A. L.; Powell, C. F.; Liu, Z.
- ASME 2009 Internal Combustion Engine Division Spring Technical Conference
Biodiesel effects on transient needle motion and near-exit flow characteristics of a high-pressure diesel injector
journal, September 2013
- Moon, Seoksu; Tsujimura, Taku; Gao, Yuan
- International Journal of Engine Research, Vol. 15, Issue 4
Linking instantaneous rate of injection to X-ray needle lift measurements for a direct-acting piezoelectric injector
journal, March 2016
- Viera, Juan P.; Payri, Raul; Swantek, Andrew B.
- Energy Conversion and Management, Vol. 112
An Eulerian CFD model and X-ray radiography for coupled nozzle flow and spray in internal combustion engines
journal, April 2015
- Xue, Q.; Battistoni, M.; Powell, C. F.
- International Journal of Multiphase Flow, Vol. 70
Effect of Off-Axis Needle Motion on Internal Nozzle and Near Exit Flow in a Multi-Hole Diesel Injector
journal, April 2014
- Battistoni, Michele; Xue, Qingluan; Som, Sibendu
- SAE International Journal of Fuels and Lubricants, Vol. 7, Issue 1
Ultrafast X-ray study of dense-liquid-jet flow dynamics using structure-tracking velocimetry
journal, January 2008
- Wang, Yujie; Liu, Xin; Im, Kyoung-Su
- Nature Physics, Vol. 4, Issue 4
Morphological Exploration of Emerging jet Flows from Multi-Hole Diesel Injectors at Different Needle Lifts
journal, January 2015
- Moon, Seoksu; Zhang, Xusheng; Gao, Jian
- Atomization and Sprays, Vol. 25, Issue 5
The effect of temperature and pressure on thermodynamic properties of diesel and biodiesel fuels
journal, March 2011
- Payri, R.; Salvador, F. J.; Gimeno, J.
- Fuel, Vol. 90, Issue 3
Works referencing / citing this record:
Nozzle tip wetting in gasoline direct injection injector and its link with nozzle internal flow
journal, August 2019
- Huang, Weidi; Moon, Seoksu; Wang, Jin
- International Journal of Engine Research, Vol. 21, Issue 2