Show simple item record

dc.contributor.authorLi, Xiang
dc.contributor.authorLi, Dayou
dc.contributor.authorPei, Yiqiang
dc.contributor.authorPeng, Zhijun
dc.date.accessioned2022-03-02T09:51:39Z
dc.date.available2022-03-01T00:00:00Z
dc.date.available2022-03-02T09:51:39Z
dc.date.issued2022-03-01
dc.identifier.citationLi X, Li D, Pei Y, Peng Z (2022) 'Optimising microscopic spray characteristics and particle emissions in a dual-injection spark ignition (SI) engine by changing GDI injection pressure', International Journal of Engine Research, (), pp.-.en_US
dc.identifier.issn1468-0874
dc.identifier.doi10.1177/14680874221082793
dc.identifier.urihttp://hdl.handle.net/10547/625333
dc.description.abstractRegarding reducing particle emissions from dual-injection spark ignition engines, most of the existing research focused on the benefits of using alcohol fuels. However, a comprehensive study of the effects of fuel injection pressure on microscopic spray characteristics and particle emissions in dual-injection spark ignition engines fuelled with gasoline has not been reported before. In this paper, with the assistance of phase Doppler particles analyser system and fast particle analyser, a study of optimising microscopic spray characteristics and particle emissions in a dual-injection spark ignition engine fuelled with gasoline by changing GDI injection pressure was conducted. The results show that by increasing injection pressure from 5.5 MPa to 18 MPa, both normal and tangential components of droplet velocity increase, but the possibility of spray impingement would not increase a lot. Higher injection pressure would increase the probability of small droplets, and more droplets would collapse with a mode of continuous ripping or break down abruptly. From jet’s central axis to sides, Sauter mean diameter increases first, then reduces outside the spray boundary. Increasing injection pressure from 5.5 MPa to 18 MPa reduces total particle number concentration, which is 53.98% and 45.44% at 2 bar and 10 bar, respectively. Meanwhile, the peak of particle number distribution curve decreases from 3.01×106 to 1.43×106 at 2 bar, whilst reducing from 1.08×106 to 5.33×105 at 10 bar. Overall, this paper comprehensively analyses the effects of fuel injection pressure on microscopic spray characteristics and particle emissions, whilst offering a practical approach to reduce particle emissions in dual-injection SI engines fuelled with gasoline.en_US
dc.language.isoenen_US
dc.publisherSAGEen_US
dc.relation.urlhttps://journals.sagepub.com/doi/10.1177/14680874221082793en_US
dc.rightsGreen - can archive pre-print and post-print or publisher's version/PDF
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectdual-injection spark ignition (SI) engineen_US
dc.subjectparticle emissionsen_US
dc.subjectmicroscopic spray characteristicsen_US
dc.subjectinjection pressureen_US
dc.subjectSubject Categories::H330 Automotive Engineeringen_US
dc.titleOptimising microscopic spray characteristics and particle emissions in a dual-injection spark ignition (SI) engine by changing GDI injection pressureen_US
dc.typeArticleen_US
dc.contributor.departmentTianjin Universityen_US
dc.contributor.departmentUniversity of Bedfordshireen_US
dc.contributor.departmentUniversity of Lincolnen_US
dc.identifier.journalInternational Journal of Engine Researchen_US
dc.date.updated2022-03-02T09:45:18Z
dc.description.notezero embargo


Files in this item

Thumbnail
Name:
FinalManuscript-IJER-21-0349.pdf
Size:
893.3Kb
Format:
PDF
Description:
author's accepted version

This item appears in the following Collection(s)

Show simple item record

Green - can archive pre-print and post-print or publisher's version/PDF
Except where otherwise noted, this item's license is described as Green - can archive pre-print and post-print or publisher's version/PDF