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Model-based turbocharger control: A common approach for SI and CI engines
Linköping University, Department of Electrical Engineering.
Linköping University, Department of Electrical Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Modellbaserad turboreglering : en ansats för både otto- och dieselmotorer (Swedish)
Abstract [en]

In this master’s thesis, a turbine model and a common control structure for theturbocharger for SI and CI-engines is developed. To design the control structure,simulations are done on an existing diesel engine model with VGT. In order tobe able to make simulations for engines with a wastegated turbine, the model isextended to include mass flow and turbine efficiency for that configuration. Thedeveloped model has a mean absolute relative error of 3.6 % for the turbine massflow and 7.4 % for the turbine efficiency. The aim was to control the intake manifoldpressure with good transients and to use the same control structure for VGTand wastegate. By using a common structure, development and calibration timecan be reduced. The non-linearities have been reduced by using an inverted turbinemodel in the control structure, which consists of a PI-controller with feedforward.The controller can be tuned to give a fast response for CI engines and a slowerresponse but with less overshoot for SI engines, which is preferable.

Place, publisher, year, edition, pages
2011. , 60 p.
Keyword [en]
modeling, model-based control, non-linear control, turbocharged SI engine, turbocharged CI engine, wastegate, VGT
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-70288ISRN: LiTH-ISY-EX--11/4487--SEOAI: oai:DiVA.org:liu-70288DiVA: diva2:438625
Subject / course
Vehicular Systems
Uppsok
Technology
Supervisors
Examiners
Available from: 2011-09-06 Created: 2011-08-30 Last updated: 2011-09-06Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf