Show simple item record

dc.contributor.authorNyrenstedt, Gustav
dc.contributor.authorAlRamadan, Abdullah
dc.contributor.authorTang, Qinglong
dc.contributor.authorBadra, Jihad
dc.contributor.authorCenker, Emre
dc.contributor.authorBen Houidi, Moez
dc.contributor.authorJohansson, Bengt
dc.date.accessioned2020-01-29T06:44:39Z
dc.date.available2020-01-29T06:44:39Z
dc.date.issued2020-04-14
dc.date.submitted2019
dc.identifier.citationNyrenstedt, G., Al Ramadan, A., Tang, Q., Badra, J., Cenker, E., Ben Houidi, M., & Johansson, B. (2020). Isobaric Combustion for High Efficiency in an Optical Diesel Engine. SAE Technical Paper Series. doi:10.4271/2020-01-0301
dc.identifier.issn0148-7191
dc.identifier.doi10.4271/2020-01-0301
dc.identifier.urihttp://hdl.handle.net/10754/661310
dc.description.abstractIsobaric combustion has been proven a promising strategy for high efficiency as well as low nitrogen oxides emissions, particularly in heavy-duty Diesel engines. Previous single-cylinder research engine experiments have, however, shown high soot levels when operating isobaric combustion. The combustion itself and the emissions formation with this combustion mode are not well understood due to the complexity of multiple injections strategy. Therefore, experiments with an equivalent heavy-duty Diesel optical engine were performed in this study. Three different cases were compared, an isochoric heat release case and two isobaric heat release cases. One of the isobaric cases was boosted to reach the maximum in-cylinder pressure of the isochoric one. The second isobaric case kept the same boost levels as the isochoric case. Results showed that in the isobaric cases, liquid fuel was injected into burning gases. This resulted in shorter ignition delays and thus a poor mixing level. The lack of fuel/air mixing was clearly the main contributor to the high soot emissions observed in isobaric combustion. The lower heat losses of the isobaric strategy were further explained by tracking the chemiluminescence. Unlike a long single injection, multiple injections helped to contain the hot gases away from the walls. However, the opposite effects were also found from the high thermal radiation caused by the extensive soot formation. High-pressure fluctuations from the rapid heat release of the isochoric case were further seen. Finally, better mixing for improved air utilization was deemed needed when utilizing isobaric heat release.
dc.description.sponsorshipThe paper is based upon work supported by Saudi Aramco Research and Development Center FUELCOM3 program under Master Research Agreement Number 6600024505/01. FUELCOM (Fuel Combustion for Advanced Engines) is a collaborative research undertaking between Saudi Aramco and KAUST intended to address the fundamental aspects of hydrocarbon fuel combustion in engines, and develop fuel/engine design tools suitable for advanced combustion modes. Furthermore, the authors would like to thank Arne Andersson at Volvo AB for his valuable inputs. Finally, the authors would like to thank MESA Engine Solutions for their cooperation and valuable input for our engines.
dc.publisherSAE International
dc.relation.urlhttps://www.sae.org/content/2020-01-0301/
dc.rightsArchived with thanks to SAE International
dc.titleIsobaric Combustion for High Efficiency in an Optical Diesel Engine
dc.typeConference Paper
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.rights.embargodate2020-10-14
dc.conference.date2020-04-21 to 2020-04-23
dc.conference.nameSAE 2020 World Congress Experience, WCX 2020
dc.conference.locationDetroit, MI, USA
dc.eprint.versionPost-print
dc.contributor.institutionSaudi Aramco
dc.identifier.volume2020-April
dc.identifier.issueApril
kaust.personNyrenstedt, Gustav
kaust.personAlRamadan, Abdullah
kaust.personTang, Qinglong
kaust.personBen Houidi, Moez
kaust.personJohansson, Bengt
dc.identifier.eid2-s2.0-85083833094
refterms.dateFOA2020-10-04T00:00:00Z


Files in this item

Thumbnail
Name:
Final_Manuscript_Nyrenstedt_2020-01-0301.pdf
Size:
1.025Mb
Format:
PDF
Description:
Accepted Manuscript

This item appears in the following Collection(s)

Show simple item record