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Correlation between engine simulations and measured data: experiences gained with 1D-simulations of turbocharged SI-engines
(English)Manuscript (Other academic)
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-6541OAI: oai:DiVA.org:kth-6541DiVA: diva2:11282
Note
QC 20101112Available from: 2006-12-11 Created: 2006-12-11 Last updated: 2010-11-12Bibliographically approved
In thesis
1. 1-D simulation of turbocharged SI engines: focusing on a new gas exchange system and knock prediction
Open this publication in new window or tab >>1-D simulation of turbocharged SI engines: focusing on a new gas exchange system and knock prediction
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

This licentiate thesis concerns one dimensional flow simulation of turbocharged spark ignited engines. The objective has been to contribute to the improvement of turbocharged SI engines’ performance as well as 1 D simulation capabilities.

Turbocharged engines suffer from poor gas exchange due to the high exhaust pressure created by the turbine. This results in power loss as well as high levels of residual gas, which makes the engine more prone to knock.

This thesis presents an alternative gas exchange concept, with the aim of removing the high exhaust pressure during the critical periods. This is done by splitting the two exhaust ports into two separate exhaust manifolds.

The alternative gas exchange study was performed by measurements as well as 1-D simulations. The link between measurements and simulations is very strong, and will be discussed in this thesis.

As mentioned, turbocharged engines are prone to knock. Hence, finding a method to model knock in 1-D engine simulations would improve the simulation capabilities. In this thesis a 0-D knock model, coupled to the 1-D engine model, is presented

Place, publisher, year, edition, pages
Stockholm: KTH, 2006. viii, 51 p.
Series
Trita-MMK, ISSN 1400-1179 ; 2006:14
Keyword
spark ignited engines, 1-D flow simulation, knock, Divided Exhaust Period, turbocharged engines
National Category
Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-4218 (URN)
Presentation
2006-12-15, Sal M3, KTH, Brinellvägen 64, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20101112Available from: 2006-12-11 Created: 2006-12-11 Last updated: 2010-11-12Bibliographically approved

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Westin, FredrikElmqvist, ChristelÅngström, Hans-Erik
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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