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Increasing the Efficiency of SI-Engines by Spark Advance Control and Water Injection
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-8646-8998
1997 (English)Report (Other academic)
Abstract [en]

By directly measuring in-cylinder parameters and adjusting the spark advance, the engine efficiency can be maximized. A feedback scheme for spark-advance control using the ionization current as sensed variable has earlier been presented. One issue is to verify that the algorithm works when the environmental conditions changes the burn rate. Humidity significantly affects the burn rate and active water injection is used to slow down the combustion giving a peak pressure position (PPP) that occurs too late. The ionization current based feedback-scheme adjusts the spark advance, and moves the PPP back to optimum. An additional result is that the engine efficiency can be increased by combining active supply of water to the combustion and the spark-advance control scheme.

Place, publisher, year, edition, pages
Linköping: Department of Electrical Engineering , 1997. , p. 12
Series
LiTH-ISY-R, ISSN 1400-3902 ; 1939
Keywords [en]
Engine Control, In-cylinder pressure, ionization current, peak pressure position
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-139744ISRN: LiTH-ISY-R-1939OAI: oai:DiVA.org:liu-139744DiVA, id: diva2:1131578
Available from: 2017-08-15 Created: 2017-08-15 Last updated: 2018-01-30Bibliographically approved

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Increasing the Efficiency of SI-Engines by Spark Advance Control and Water Injection(441 kB)16 downloads
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Eriksson, Lars

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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