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Robust tuning of Individual Cylinders AFR in SI Engines with the Ion Current
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent Systems´ laboratory.ORCID iD: 0000-0002-4143-2948
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent Systems´ laboratory.
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent Systems´ laboratory.
2005 (English)In: SAE Transactions, ISSN 0096-736X, Vol. 114, no 03, 48-52 p.Article in journal (Refereed) Published
Abstract [en]

A method for robust tuning of individual cylinders air-fuel ratio is proposed. The fuel injection is adjusted so that each cylinder has the same air-fuel ratio in inner control loops, and the resulting air-fuel ratio in the exhaust pipe is controlled with an exhaust gas oxygen sensor (EGO) in an outer control loop to achieve stoichiometric air-fuel ratio. Correction factors to provide cylinder individual fuel injection timing are calculated based on measurements of the ion currents for the individual cylinders. An implementation in a production vehicle is shown with results from driving on the highway.

Place, publisher, year, edition, pages
New York: Society of Automotive Engineers, 2005. Vol. 114, no 03, 48-52 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hh:diva-14594DOI: 10.4271/2005-01-0020OAI: oai:DiVA.org:hh-14594DiVA: diva2:404648
Conference
SAE World Congress & exhibition 2005
Available from: 2011-03-17 Created: 2011-03-17 Last updated: 2016-04-13Bibliographically approved
In thesis
1. Virtual sensing of combustion quality in SI engines using the ion current
Open this publication in new window or tab >>Virtual sensing of combustion quality in SI engines using the ion current
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Chalmers tekniska högskola, 2004. 70 p.
Series
Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie, ISSN 0346-718x ; 2207
Keyword
Internal Combustion Engines, Spark Ignition, Estimation, Control, Neural Networks, Ion Current
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:hh:diva-667 (URN)2082/1009 (Local ID)91-7291-525-0 (ISBN)2082/1009 (Archive number)2082/1009 (OAI)
Public defence
2004-11-19, Wgforssalen, Halmstad, 10:15 (English)
Opponent
Supervisors
Available from: 2007-05-07 Created: 2007-05-07 Last updated: 2016-04-13Bibliographically approved

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Wickström, NicholasByttner, StefanHolmberg, Ulf
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CiteExportLink to record
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Citation style
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Output format
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