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

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

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.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Mechanical Engineering

Keywords

  • Internal Combustion Engines, Diesel Engines, Particulate Matter, Soot, Correlation
Original languageEnglish
Title of host publicationSAE Technical Paper Series
PublisherSociety of Automotive Engineers
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes
EventSAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013 - Soeul, Korea, Republic of
Duration: 2013 Oct 212013 Oct 23

Publication series

Name
ISSN (Print)0148-7191

Conference

ConferenceSAE/KSAE , International Powertrains, Fuels & Lubricants Meeting, 2013
CountryKorea, Republic of
CitySoeul
Period2013/10/212013/10/23