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

2013-01-2535

10/14/2013

Event
SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2013-01-2535
Pages
11
Citation
Lequien, G., Andersson, Ö., Tunestal, P., and Lewander, M., "A Correlation Analysis of the Roles of Soot Formation and Oxidation in a Heavy-Duty Diesel Engine," SAE Technical Paper 2013-01-2535, 2013, https://doi.org/10.4271/2013-01-2535.
Additional Details
Publisher
Published
Oct 14, 2013
Product Code
2013-01-2535
Content Type
Technical Paper
Language
English