Study on the Pre-Chamber Fueling Ratio Effect on the Main Chamber Combustion Using Simultaneous PLIF and OH* Chemiluminescence Imaging

dc.conference.date2020-09-22 to 2020-09-24
dc.conference.locationVirtual, Online, POL
dc.conference.nameSAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020
dc.contributor.authorSampath, Ramgopal
dc.contributor.authorTang, Qinglong
dc.contributor.authorEcheverri Marquez, Manuel Alejandro
dc.contributor.authorSharma, Priybrat
dc.contributor.authorHlaing, Ponnya
dc.contributor.authorBen Houidi, Moez
dc.contributor.authorCenker, Emre
dc.contributor.authorChang, Junseok
dc.contributor.authorJohansson, Bengt
dc.contributor.authorMagnotti, Gaetano
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMechanical Engineering
dc.contributor.departmentMechanical Engineering Program
dc.contributor.institutionSaudi Aramco
dc.date.accessioned2020-11-04T13:39:24Z
dc.date.available2020-11-04T13:39:24Z
dc.date.issued2020-09-15
dc.description.abstractPre-chamber combustion (PCC) enables leaner air-fuel ratio operation by improving its ignitability and extending flammability limit, and consequently, offers better thermal efficiency than conventional spark ignition operation. The geometry and fuel concentration of the pre-chamber (PC) is one of the major parameters that affect overall performance. To understand the dynamics of the PCC in practical engine conditions, this study focused on (i) correlation of the events in the main chamber (MC) with the measured in-cylinder pressure traces and, (ii) the effect of fuel concentration on the MC combustion characteristics using laser diagnostics. We performed simultaneous acetone planar laser-induced fluorescence (PLIF) from the side, and OH* chemiluminescence imaging from the bottom in a heavy-duty optical engine. Two different PC Fueling Ratios (PCFR, the ratio of PC fuel to the total fuel), 7%, and 13%, were investigated. The "negative"regions of the PLIF fields were used to visualize PC jets and the MC combustion. The absence of acetone seeding in the PC, and its consumption during the MC combustion contributed to the loss of PLIF signal (negative regions). The instantaneous PLIF/OH* fields showed the appearance of PC jets near its pressure maximum. The PC jet interacting with the piston surface was accompanied by an increase in OH* chemiluminescence intensity and its area. Increasing PCFR resulted in a lag of 0.6° crank angle in the PC and MC pressure and the pressure difference (?"PPC-MC) between the two, for the two PCFR cases. This led to a phase lag in the PC flame jet penetration distance, which in turn delayed the increase in the total OH* chemiluminescence intensity for the higher PCFR case. For similar PPC-MC, we observed wider OH* regions with increased PCFR. This result distinguished the radical concentration effect on the MC combustion from the fluid mechanical effects controlled by PPC-MC.
dc.eprint.versionPost-print
dc.identifier.citationSampath, R., Tang, Q., Echeverri Marquez, M., Sharma, P., Hlaing, P., Ben Houidi, M., … Magnotti, G. (2020). Study on the Pre-Chamber Fueling Ratio Effect on the Main Chamber Combustion Using Simultaneous PLIF and OH* Chemiluminescence Imaging. SAE Technical Paper Series. doi:10.4271/2020-01-2024
dc.identifier.doi10.4271/2020-01-2024
dc.identifier.eid2-s2.0-85092709177
dc.identifier.issn0148-7191
dc.identifier.issue2020
dc.identifier.urihttp://hdl.handle.net/10754/665821
dc.publisherSAE International
dc.relation.urlhttps://www.sae.org/content/2020-01-2024/
dc.rightsArchived with thanks to SAE International
dc.rights.embargodate2021-03-16
dc.titleStudy on the Pre-Chamber Fueling Ratio Effect on the Main Chamber Combustion Using Simultaneous PLIF and OH* Chemiluminescence Imaging
dc.typeConference Paper
display.details.left<span><h5>Embargo End Date</h5>2021-03-16<br><br><h5>Type</h5>Conference Paper<br><br><h5>Authors</h5><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0002-2157-1668&spc.sf=dc.date.issued&spc.sd=DESC">Sampath, Ramgopal</a> <a href="https://orcid.org/0000-0002-2157-1668" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0002-6949-8690&spc.sf=dc.date.issued&spc.sd=DESC">Tang, Qinglong</a> <a href="https://orcid.org/0000-0002-6949-8690" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Echeverri Marquez, Manuel Alejandro,equals">Echeverri Marquez, Manuel Alejandro</a><br><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0001-9649-3943&spc.sf=dc.date.issued&spc.sd=DESC">Sharma, Priybrat</a> <a href="https://orcid.org/0000-0001-9649-3943" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Hlaing, Ponnya,equals">Hlaing, Ponnya</a><br><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0002-1708-1789&spc.sf=dc.date.issued&spc.sd=DESC">Ben Houidi, Moez</a> <a href="https://orcid.org/0000-0002-1708-1789" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Cenker, Emre,equals">Cenker, Emre</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.author=Chang, Junseok,equals">Chang, Junseok</a><br><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0002-0163-5062&spc.sf=dc.date.issued&spc.sd=DESC">Johansson, Bengt</a> <a href="https://orcid.org/0000-0002-0163-5062" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><a href="https://repository.kaust.edu.sa/search?query=orcid.id:0000-0002-1723-5258&spc.sf=dc.date.issued&spc.sd=DESC">Magnotti, Gaetano</a> <a href="https://orcid.org/0000-0002-1723-5258" target="_blank"><img src="https://repository.kaust.edu.sa/server/api/core/bitstreams/82a625b4-ed4b-40c8-865a-d6a5225a26a4/content" width="16" height="16"/></a><br><br><h5>KAUST Department</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Clean Combustion Research Center,equals">Clean Combustion Research Center</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Physical Science and Engineering (PSE) Division,equals">Physical Science and Engineering (PSE) Division</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Mechanical Engineering,equals">Mechanical Engineering</a><br><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.department=Mechanical Engineering Program,equals">Mechanical Engineering Program</a><br><br><h5>Date</h5>2020-09-15</span>
display.details.right<span><h5>Abstract</h5>Pre-chamber combustion (PCC) enables leaner air-fuel ratio operation by improving its ignitability and extending flammability limit, and consequently, offers better thermal efficiency than conventional spark ignition operation. The geometry and fuel concentration of the pre-chamber (PC) is one of the major parameters that affect overall performance. To understand the dynamics of the PCC in practical engine conditions, this study focused on (i) correlation of the events in the main chamber (MC) with the measured in-cylinder pressure traces and, (ii) the effect of fuel concentration on the MC combustion characteristics using laser diagnostics. We performed simultaneous acetone planar laser-induced fluorescence (PLIF) from the side, and OH* chemiluminescence imaging from the bottom in a heavy-duty optical engine. Two different PC Fueling Ratios (PCFR, the ratio of PC fuel to the total fuel), 7%, and 13%, were investigated. The "negative"regions of the PLIF fields were used to visualize PC jets and the MC combustion. The absence of acetone seeding in the PC, and its consumption during the MC combustion contributed to the loss of PLIF signal (negative regions). The instantaneous PLIF/OH* fields showed the appearance of PC jets near its pressure maximum. The PC jet interacting with the piston surface was accompanied by an increase in OH* chemiluminescence intensity and its area. Increasing PCFR resulted in a lag of 0.6° crank angle in the PC and MC pressure and the pressure difference (?"PPC-MC) between the two, for the two PCFR cases. This led to a phase lag in the PC flame jet penetration distance, which in turn delayed the increase in the total OH* chemiluminescence intensity for the higher PCFR case. For similar PPC-MC, we observed wider OH* regions with increased PCFR. This result distinguished the radical concentration effect on the MC combustion from the fluid mechanical effects controlled by PPC-MC.<br><br><h5>Citation</h5>Sampath, R., Tang, Q., Echeverri Marquez, M., Sharma, P., Hlaing, P., Ben Houidi, M., … Magnotti, G. (2020). Study on the Pre-Chamber Fueling Ratio Effect on the Main Chamber Combustion Using Simultaneous PLIF and OH* Chemiluminescence Imaging. SAE Technical Paper Series. doi:10.4271/2020-01-2024<br><br><h5>Publisher</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.publisher=SAE International,equals">SAE International</a><br><br><h5>Conference/Event Name</h5><a href="https://repository.kaust.edu.sa/search?spc.sf=dc.date.issued&spc.sd=DESC&f.conference=SAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020,equals">SAE 2020 International Powertrains, Fuels and Lubricants Meeting, PFL 2020</a><br><br><h5>DOI</h5><a href="https://doi.org/10.4271/2020-01-2024">10.4271/2020-01-2024</a><br><br><h5>Additional Links</h5>https://www.sae.org/content/2020-01-2024/</span>
kaust.personSampath, Ramgopal
kaust.personTang, Qinglong
kaust.personEcheverri Marquez, Manuel Alejandro
kaust.personSharma, Priybrat
kaust.personHlaing, Ponnya
kaust.personBen Houidi, Moez
kaust.personJohansson, Bengt
kaust.personMagnotti, Gaetano
orcid.id0000-0002-1723-5258
orcid.id0000-0002-0163-5062
orcid.id0000-0002-1708-1789
orcid.id0000-0001-9649-3943
orcid.id0000-0002-6949-8690
orcid.id0000-0002-2157-1668
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