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Mean Value Models for Exhaust System Temperatures
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, Faculty of Science & Engineering.
2003 (English)In: SAE technical paper series, ISSN 0148-7191, Vol. 111, no 3Article in journal (Refereed) Published
Abstract [en]

Exhaust temperatures are important for turbine and catalyst performance. A set of exhaust temperature models suitable for turbo matching as well as design and analysis of engine control systems are developed and investigated. The models are lumped parameter heat transfer models, that fall within the category of mean value engine models. The model is developed for describing exit temperatures from the exhaust manifold and temperature drops in pipe sections in the exhaust system. The components used to model the exhaust temperature are: engine out temperature, temperature drop in a straight pipe, and a set of heat transfer modes. The model is validated using data from three different engines. It is shown that, for a spark ignited engine operating at MBT and stoichiometric conditions, it is sufficient to model the engine out temperature as a linear function of mass flow. Recommendations for tuning the model are also given. A thorough survey of exhaust heat transfer literature is also made together with a comparative summary of the different heat transfer modes that are present in the exhaust.

Place, publisher, year, edition, pages
2003. Vol. 111, no 3
Keyword [en]
Engine Modelling
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-137255DOI: 10.4271/2002-01-0374ScopusID: 2-s2.0-33645325872OAI: oai:DiVA.org:liu-137255DiVA: diva2:1094334
Available from: 2017-05-09 Created: 2017-05-09 Last updated: 2017-05-18Bibliographically approved

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Eriksson, Lars
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CiteExportLink to record
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Citation style
  • apa
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