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A Correlation Analysis of the Roles of Soot Formation and Oxidation in a Heavy-Duty Diesel Engine

In English

Författare

Summary, in English

Emissions and in-cylinder pressure traces are used to compare the relative importance of soot formation and soot oxidation in a heavy-duty diesel engine. The equivalence ratio at the lift-off length is estimated with an empirical correlation and an idealized model of diesel spray. No correlation is found between the equivalence ratio at lift-off and the soot emissions. This confirms that trends in soot emissions cannot be directly understood by the soot formation process. The coupling between soot emission levels and late heat release after end of injection is also studied. A regression model describing soot emissions as function of global engine parameters influencing soot oxidation is proposed. Overall, the results of this analysis indicate that soot emissions can be understood in terms of the efficiency of the oxidation process.

Publiceringsår

2013

Språk

Engelska

Publikation/Tidskrift/Serie

SAE Technical Paper Series

Dokumenttyp

Konferensbidrag

Förlag

Society of Automotive Engineers

Ämne

  • Other Mechanical Engineering

Nyckelord

  • Internal Combustion Engines
  • Diesel Engines
  • Particulate Matter
  • Soot
  • Correlation

Conference name

SAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013

Conference date

2013-10-21 - 2013-10-23

Conference place

Soeul, Korea, Republic of

Status

Published

Projekt

  • Competence Centre for Combustion Processes

ISBN/ISSN/Övrigt

  • ISSN: 0148-7191
  • 2013-01-2535