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Co-Surge Detection and Control for Bi-Turbo Engines with Experimental Evaluation
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, The Institute of Technology.
2013 (English)Conference paper, Published paper (Refereed)
Abstract [en]

A V-type engine with a bi-turbocharger configuration utilizes the exhaust energy well which gives a fast torque response. An unwanted instability, called co-surge, can occur in such engines where the two interconnected compressors alternately go into flow reversals. If co-surge occurs, the control system must quell the oscillations with as little disturbance in engine torque as possible. A model of a bi-turbocharged engine is presented, combining a mean value engine model and a Moore-Greizer compressor model for surge. The model is validated against measurements on a vehicle dynamometer, showing that it captures the frequency and amplitude of the co-surge oscillation. The model is used to develop detection and control strategies for co-surge that rapidly returns the turbo to a stable operating point. Both simulations and experimental evaluation on the vehicle show that the developed strategies are successful in rapidly detecting and quelling co-surge. The selection of actuators is also studied. With no or small pressure drops over the throttle, it is necessary to use the bypass valves. However, for operating conditions with moderate and high pressure drops over the throttle, it is shown that it is sufficient to only open the throttle. This has the advantage, compared to opening the bypass valves, that it reduces the drop in boost pressure and thus reduces the drop in engine torque.

Place, publisher, year, edition, pages
International Federation of Automatic Control , 2013. 276-281 p.
Series
Advances in Automotive Control, ISSN 1474-6670
Keyword [en]
Compressor surge, surge detection, surge control, engine modeling, engine control
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-105681DOI: 10.3182/20130904-4-JP-2042.00012ISBN: 978-3-902823-48-9 (print)OAI: oai:DiVA.org:liu-105681DiVA: diva2:709497
Conference
7th IFAC Symposium on Advances in Automotive Control, Tokyo, Japan, 2013, 4-7 September
Available from: 2014-04-02 Created: 2014-04-02 Last updated: 2014-04-11Bibliographically approved

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ThoEri2013(870 kB)303 downloads
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Thomasson, AndreasEriksson, Lars

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Citation style
  • apa
  • harvard1
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  • vancouver
  • oxford
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
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Output format
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