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ID 51515
creator
Kim, Jaeheun
Kakami, Shinichi
subject
Diesel
Spray
Single-hole
Multi-hole
Evaporating
abstract
A comparison of diesel spray for injectors with single-hole (SH) and multi-hole (MH) nozzles has been conducted under same rail pressure and similar injection rate (30 MPa for SH and 100 MPa for MH) conditions. The result showed that the spray of SH injector has a longer penetration under same rail pressure condition caused by the faster build-up process of sac pressure. The spray of MH injector has a larger spray angle resulted from the complicated nozzle flow. These further affect the evaporation rate and mixture formation process. Regarding the same rail pressure condition, the spray of SH injector shows a fast evaporation rate, as well as the MH injector, although the spray angle of SH injector is quite small. For the entire mixture formation process, more spray vapor of SH is distributed in the thin area. For similar injection rate condition, the effect of different spray tip penetration can be eliminated while the advantage of the large spray angle of MH injector becomes apparent. The evaporation rate and mixture formation process of the SH injector are much worse than those of the MH injector. The complex nozzle internal flow of MH injector is responsible.
description
This work was supported by the Council for Science, Technology and Innovation (CSTI), Cross-ministerial Strategic Innovation Promotion Program (SIP), “Innovative combustion technology” (funding agency: JST).
journal title
International Communications in Heat and Mass Transfer
volume
Volume 118
start page
104862
date of issued
2020-09-07
publisher
Elsevier
issn
0735-1933
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version. この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
relation url
department
Graduate School of Advanced Science and Engineering
note
The full-text file will be made open to the public on 7 Sep 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'