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Title: Hole number effect on spray dynamics of multi-hole diesel nozzles: An observation from three- to nine-hole nozzles

Abstract

For the simplicity of optical diagnostics, studies on fuel spray and combustion characteristics of modern diesel engines have been conducted using the investigation nozzles having the reduced number of holes (two- or three-hole nozzles) compared to the production nozzles. However, the similarity of spray dynamics between the investigation nozzles and production nozzles has not been confirmed yet. Also, the hole number effect on spray dynamics has been investigated only in a limited range of hole number making it difficult to derive the clear trend and understandings of the hole number effect. In this study, the hole number effect on spray dynamics of multi-hole diesel nozzles has been investigated in a wide range of hole number with sufficient data points (three, five, six, eight, nine-hole) by using the X-ray Phase-Contrast Imaging technique. The non-linear trend in the spray structure, as well as the dynamics results, was observed as increasing the hole number regardless of injection pressure. Discussions were made accordingly to understand the observed result trend. In conclusion, the study suggests that great attention is needed when deciding the number of nozzle holes for the optimized engine combustion.

Authors:
ORCiD logo [1];  [2];  [3];  [3];  [4];  [5]
  1. National Inst. of Advanced Industrial Science and Technology, Ibaraki (Japan)
  2. National Inst. of Advanced Industrial Science and Technology, Ibaraki (Japan); Inha Univ., Incheon (Republic of Korea)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Isuzu Motors Ltd., Kanagawa (Japan)
  5. Isuzu Advanced Engineering Center Ltd., Kanagawa (Japan)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1524422
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Experimental Thermal and Fluid Science
Additional Journal Information:
Journal Volume: 102; Journal Issue: C; Journal ID: ISSN 0894-1777
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Multi-hole diesel nozzle; Nozzle hole number; Spray dynamics; Spray spreading angle; X-ray phase contrast imaging

Citation Formats

Huang, Weidi, Moon, Seoksu, Gao, Ya, Wang, Jin, Ozawa, Daisuke, and Matsumoto, Atsushi. Hole number effect on spray dynamics of multi-hole diesel nozzles: An observation from three- to nine-hole nozzles. United States: N. p., 2018. Web. doi:10.1016/j.expthermflusci.2018.12.022.
Huang, Weidi, Moon, Seoksu, Gao, Ya, Wang, Jin, Ozawa, Daisuke, & Matsumoto, Atsushi. Hole number effect on spray dynamics of multi-hole diesel nozzles: An observation from three- to nine-hole nozzles. United States. doi:10.1016/j.expthermflusci.2018.12.022.
Huang, Weidi, Moon, Seoksu, Gao, Ya, Wang, Jin, Ozawa, Daisuke, and Matsumoto, Atsushi. Mon . "Hole number effect on spray dynamics of multi-hole diesel nozzles: An observation from three- to nine-hole nozzles". United States. doi:10.1016/j.expthermflusci.2018.12.022.
@article{osti_1524422,
title = {Hole number effect on spray dynamics of multi-hole diesel nozzles: An observation from three- to nine-hole nozzles},
author = {Huang, Weidi and Moon, Seoksu and Gao, Ya and Wang, Jin and Ozawa, Daisuke and Matsumoto, Atsushi},
abstractNote = {For the simplicity of optical diagnostics, studies on fuel spray and combustion characteristics of modern diesel engines have been conducted using the investigation nozzles having the reduced number of holes (two- or three-hole nozzles) compared to the production nozzles. However, the similarity of spray dynamics between the investigation nozzles and production nozzles has not been confirmed yet. Also, the hole number effect on spray dynamics has been investigated only in a limited range of hole number making it difficult to derive the clear trend and understandings of the hole number effect. In this study, the hole number effect on spray dynamics of multi-hole diesel nozzles has been investigated in a wide range of hole number with sufficient data points (three, five, six, eight, nine-hole) by using the X-ray Phase-Contrast Imaging technique. The non-linear trend in the spray structure, as well as the dynamics results, was observed as increasing the hole number regardless of injection pressure. Discussions were made accordingly to understand the observed result trend. In conclusion, the study suggests that great attention is needed when deciding the number of nozzle holes for the optimized engine combustion.},
doi = {10.1016/j.expthermflusci.2018.12.022},
journal = {Experimental Thermal and Fluid Science},
number = C,
volume = 102,
place = {United States},
year = {2018},
month = {12}
}

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This content will become publicly available on December 17, 2019
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