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Compressor Flow Extrapolation and Library Design for the Modelica Vehicle Propulsion Library - VehProLib
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-8646-8998
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, Faculty of Science & Engineering.
Linköping University.
2016 (English)In: SAE 2016 World Congress and Exhibition, SAE International , 2016, article id 2016-01-1037Conference paper, Published paper (Refereed)
Abstract [en]

Modelbased systems engineering is becoming an important tool when meeting the challenges of developing the complex future vehicles that fulfill the customers and legislators ever increasing demands for reduced pollutants and fuel consumption. To be able to work systematically and efficiently it is desirable to have a library of components that can be adjusted and adapted to each new situation. Turbocharged engines are complex and the compressor model serves as an in-depth example of how a library can be designed, incorporating the basic physics and allowing fine tuning as more information becomes available. A major part of the paper is the summary and compilation of a set of rules of thumb for compressor map extrapolation. The considerations discussed are extrapolation to surge, extrapolation to restriction region, and extrapolation out to choking. Furthermore the compressor diameter is coupled to the maximum performance of the compressor such as maximum speed, mass flow, and pressure ratio. All this is a result of an analysis of a database of more than 300 compressors. The paper uses the compressor modeling to discuss how wishes for extendability and reuse of component performance influences the library design. A Modelica library named Vehicle Propulsion Library VehProLib has been developed to meet these goals by including basic components that give a starting point for modeling and at the same time allows reuse and extendablility.

Place, publisher, year, edition, pages
SAE International , 2016. article id 2016-01-1037
Series
SAE Technical Papers, ISSN 0148-7191
National Category
Embedded Systems
Identifiers
URN: urn:nbn:se:liu:diva-137758DOI: 10.4271/2016-01-1037Scopus ID: 2-s2.0-84975316733OAI: oai:DiVA.org:liu-137758DiVA, id: diva2:1098918
Conference
SAE 2016 World Congress and Exhibition, Detroit, MI, USA, April 12-14 2016
Available from: 2017-05-28 Created: 2017-05-28 Last updated: 2018-03-27Bibliographically approved

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Eriksson, LarsNezhadali, Vaheed

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