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Exhaust volume dependency of turbocharger turbine design for a heavy duty otto cycle engine

Anton, Nicholas; Genrup, Magnus LU ; Fredriksson, Carl; Larsson, Per Inge and Erlandsson-Christiansen, Anders (2017) ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017 In Turbomachinery 2C-2017.
Abstract

This study is considering turbocharger turbine performance at "on-engine" conditions with respect to turbine design variables and exhaust manifold volume. The highly unsteady nature of the internal combustion engine will result in a very wide range of turbine operation, far from steady flow conditions. As most turbomachinery design work is conducted at steady state, the influence of the chosen turbine design variables on the crank-angle-resolved turbine performance will be of prime interest. In order to achieve high turbocharger efficiency with the greatest benefits for the engine, the turbine will need high efficiency at the energetic exhaust pressure pulse peak. The starting point for this paper is a target full load power curve for a... (More)

This study is considering turbocharger turbine performance at "on-engine" conditions with respect to turbine design variables and exhaust manifold volume. The highly unsteady nature of the internal combustion engine will result in a very wide range of turbine operation, far from steady flow conditions. As most turbomachinery design work is conducted at steady state, the influence of the chosen turbine design variables on the crank-angle-resolved turbine performance will be of prime interest. In order to achieve high turbocharger efficiency with the greatest benefits for the engine, the turbine will need high efficiency at the energetic exhaust pressure pulse peak. The starting point for this paper is a target full load power curve for a heavy duty Otto-cycle engine, which will dictate an initial compressor and turbine match. Three radial turbine designs are investigated, differing with respect to efficiency characteristics, using a common compressor stage. The influence of the chosen turbine design variables considering a main contributor to unsteadiness, exhaust manifold volume, is evaluated using 1D engine simulation software. A discussion is held in conjunction with this regarding the efficiency potential of each turbine design and limitations of turbine types.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Design, Radial, Steady, Turbocharger, Unsteady
in
Turbomachinery
volume
2C-2017
publisher
American Society Of Mechanical Engineers (ASME)
conference name
ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017
external identifiers
  • scopus:85028987491
ISBN
9780791850800
DOI
10.1115/GT2017-63641
language
English
LU publication?
yes
id
97e84125-fe64-4509-9d42-73c4a2cec5e1
date added to LUP
2017-09-28 07:01:06
date last changed
2018-01-07 12:19:39
@inproceedings{97e84125-fe64-4509-9d42-73c4a2cec5e1,
  abstract     = {<p>This study is considering turbocharger turbine performance at "on-engine" conditions with respect to turbine design variables and exhaust manifold volume. The highly unsteady nature of the internal combustion engine will result in a very wide range of turbine operation, far from steady flow conditions. As most turbomachinery design work is conducted at steady state, the influence of the chosen turbine design variables on the crank-angle-resolved turbine performance will be of prime interest. In order to achieve high turbocharger efficiency with the greatest benefits for the engine, the turbine will need high efficiency at the energetic exhaust pressure pulse peak. The starting point for this paper is a target full load power curve for a heavy duty Otto-cycle engine, which will dictate an initial compressor and turbine match. Three radial turbine designs are investigated, differing with respect to efficiency characteristics, using a common compressor stage. The influence of the chosen turbine design variables considering a main contributor to unsteadiness, exhaust manifold volume, is evaluated using 1D engine simulation software. A discussion is held in conjunction with this regarding the efficiency potential of each turbine design and limitations of turbine types.</p>},
  author       = {Anton, Nicholas and Genrup, Magnus and Fredriksson, Carl and Larsson, Per Inge and Erlandsson-Christiansen, Anders},
  booktitle    = {Turbomachinery},
  isbn         = {9780791850800},
  keyword      = {Design,Radial,Steady,Turbocharger,Unsteady},
  language     = {eng},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  title        = {Exhaust volume dependency of turbocharger turbine design for a heavy duty otto cycle engine},
  url          = {http://dx.doi.org/10.1115/GT2017-63641},
  volume       = {2C-2017},
  year         = {2017},
}