Comparison of diesel spray with small injection amount between single-hole and multi-hole injectors: Results under same rail pressure and similar injection rate
International Communications in Heat and Mass Transfer Volume 118
Page 104862-
published_at 2020-09-07
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2022-09-07
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Title ( eng ) |
Comparison of diesel spray with small injection amount between single-hole and multi-hole injectors: Results under same rail pressure and similar injection rate
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Creator |
Kim Jaeheun
Kakami Shinichi
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Source Title |
International Communications in Heat and Mass Transfer
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Volume | 118 |
Start Page | 104862 |
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.
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Keywords |
Diesel
Spray
Single-hole
Multi-hole
Evaporating
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Descriptions |
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).
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Language |
eng
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Resource Type | journal article |
Publisher |
Elsevier
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Date of Issued | 2020-09-07 |
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。
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Publish Type | Author’s Original |
Access Rights | open access |
Source Identifier |
[ISSN] 0735-1933
[DOI] 10.1016/j.icheatmasstransfer.2020.104862
[DOI] https://doi.org/10.1016/j.icheatmasstransfer.2020.104862
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Remark | 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' |