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A guide to turbocharger compressor characteristics

Abstract

The key features of the global performance characteristics of radial compressor stages in turbochargers are reviewed on the basis of elementary 1D compressible flow equations and appropriate non-dimensional flow parameters. The background to the relevant equations is provided and these are then used to explain some features of the shape and form of radial compressor performance characteristics. The discussion explains the different forms of non-dimensional compressor characteristics, the change in performance with rotational speed, the matching between impeller and diffuser at different speeds and the effect of elementary design changes on the performance of a typical stage. Examples are provided using a simple mean-line prediction tool, Vista-CC. Some insight is also given on special issues such as variable geometry, two-stage compression, installation effects and off-design excursions due to the operation of the compressor in the unsteady flow from a engine. The paper is intended as a detailed introduction to turbocharger compressor characteristics for automotive engineers who may not be particularly familiar with turbomachinery technology. (orig.)
Authors:
Casey, M V; [1]  Robinson, C J [2] 
  1. Inst. fuer Thermische Stroemungsmaschinen, Univ. Stuttgart (Germany)
  2. PCA Engineers Ltd., Lincoln (United Kingdom)
Publication Date:
Jul 01, 2006
Product Type:
Conference
Resource Relation:
Conference: 10. symposium on Diesel engine technology, 10. Symposium Dieselmotorentechnik, Ostfildern (Germany), 30-31 Mar 2006; Related Information: In: 10. Symposium ''Diesel engine technology''. Proceedings, 10. Symposium Dieselmotorentechnik. Konferenzband, CD-ROM pages.
Subject:
33 ADVANCED PROPULSION SYSTEMS; TURBOCHARGERS; DIESEL ENGINES; PERFORMANCE; DIAGRAMS; RADIAL VELOCITY; COMPRESSORS; THERMODYNAMIC PROPERTIES
OSTI ID:
20892848
Research Organizations:
Technische Akademie Esslingen, Ostfildern (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
TRN: DE07G7695
Availability:
Available from TIB Hannover
Submitting Site:
DE
Size:
page(s) 4
Announcement Date:
Aug 13, 2007

Citation Formats

Casey, M V, and Robinson, C J. A guide to turbocharger compressor characteristics. Germany: N. p., 2006. Web.
Casey, M V, & Robinson, C J. A guide to turbocharger compressor characteristics. Germany.
Casey, M V, and Robinson, C J. 2006. "A guide to turbocharger compressor characteristics." Germany.
@misc{etde_20892848,
title = {A guide to turbocharger compressor characteristics}
author = {Casey, M V, and Robinson, C J}
abstractNote = {The key features of the global performance characteristics of radial compressor stages in turbochargers are reviewed on the basis of elementary 1D compressible flow equations and appropriate non-dimensional flow parameters. The background to the relevant equations is provided and these are then used to explain some features of the shape and form of radial compressor performance characteristics. The discussion explains the different forms of non-dimensional compressor characteristics, the change in performance with rotational speed, the matching between impeller and diffuser at different speeds and the effect of elementary design changes on the performance of a typical stage. Examples are provided using a simple mean-line prediction tool, Vista-CC. Some insight is also given on special issues such as variable geometry, two-stage compression, installation effects and off-design excursions due to the operation of the compressor in the unsteady flow from a engine. The paper is intended as a detailed introduction to turbocharger compressor characteristics for automotive engineers who may not be particularly familiar with turbomachinery technology. (orig.)}
place = {Germany}
year = {2006}
month = {Jul}
}