Ignition behavior of marine diesel sprays. Investigation of marine diesel ignition and combustion at engine-like conditions by means of OH* chemiluminescence and soot incandescence
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Autor:in (Körperschaft)
Publikationsdatum
2012
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
8
Ausgabe / Nummer
Seiten / Dauer
182-187
Patentnummer
Verlag / Herausgebende Institution
Japan Society of Mechanical Engineers
Verlagsort / Veranstaltungsort
Fukuoka
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
In this contribution, an initial investigation of the ignition behavior of large two-stroke marine diesel sprays has been performed. At engine-like conditions, the OH radical was traced with an intensified high speed camera and a sophisti-cated optical setup. A series of spectroscopic measurements showed, however, that the soot incandescence strongly con-tributes to the UV signal, superimposing with or even masking the chemiluminescence of the OH radical. As the com-bustion of typical fuels used in large two-stroke engines involves the formation of non-negligible amounts of soot, the signal is almost omnipresent during the oxidation process. A differentiation between the UV-light emitted by the OH radical and the UV-light emitted by soot incandescence is only possible when both signals are measured separately. Therefore, a second high speed camera recorded the light coming from soot incandescence. In addition, it recorded the background illuminated spray plume to make an exact positioning of the OH* signal relative to the spray possible. A comparison of the two images then allowed the differentiation between the two light sources. In a first measurement series, which included a temperature variation, ignition delay, ignition location and flame lift-off have been measured. The results are in accordance with literature, as they show a dramatic decrease in ignition delay towards higher gas temperature. On the other hand the standard deviation increases towards lower gas temperatures. The ignition location and lift-off showed similar behavior: Lower gas temperature corresponds to an increase of the distance between ignition location/lift-off and nozzle orifice along with increased standard deviation. It could be shown that the applied technique works for the investigation of large marine diesel engine combustion systems.
Schlagwörter
Veranstaltung
The 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2012)
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
23.07.2012
Enddatum der Konferenz
26.07.2012
Datum der letzten Prüfung
ISBN
ISSN
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Nein
Zukunftsfelder FHNW
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Closed
Lizenz
Zitation
Schmid, A., von Rotz, B., Bombach, R., Weisser, G., Herrmann, K., & Boulouchos, K. (2012). Ignition behavior of marine diesel sprays. Investigation of marine diesel ignition and combustion at engine-like conditions by means of OH* chemiluminescence and soot incandescence. The Proceedings of the International Symposium on Diagnostics and Modeling of Combustion in Internal Combustion Engines, 8, 182–187. https://doi.org/10.1299/jmsesdm.2012.8.182