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Application of Taguchi method in optimization of design parameter for turbocharger vaned diffuser

Application of Taguchi method in optimization of design parameter for turbocharger vaned diffuser PurposeThe purpose of this study is to determine the best vaned diffuser design that can generate higher pressure output at a predetermined speed.Design/methodology/approachSeveral vaned diffusers of thin, flat-type design with different number of blades and blade angle were fabricated. The vaned diffusers were fitted inside the turbocharger compressor and test on a cold-flow turbocharger test rig. A Taguchi L27 orthogonal array is selected for analysis of the data. Influence of number of blades, blade angle and rotational speed on output pressure is studied using the analysis of variance (ANOVA) technique. Finally, confirmation tests are conducted to validate the experimental results.FindingsThe optimum design parameters of the vaned diffuser using signal-to-noise ratio analysis were six blades type, blade angle of 18° and rotational speed of 70,000 rpm. Results from ANOVA showed that the speed has the highest influence on output pressure. The number of blades and blade angle produced the least effect on the pressure output.Originality/valueThe study used the turbocharger with the impeller size 60 mm and adapted vaned diffuser to increase the output pressure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Industrial Lubrication and Tribology Emerald Publishing

Application of Taguchi method in optimization of design parameter for turbocharger vaned diffuser

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0036-8792
DOI
10.1108/ILT-09-2016-0224
Publisher site
See Article on Publisher Site

Abstract

PurposeThe purpose of this study is to determine the best vaned diffuser design that can generate higher pressure output at a predetermined speed.Design/methodology/approachSeveral vaned diffusers of thin, flat-type design with different number of blades and blade angle were fabricated. The vaned diffusers were fitted inside the turbocharger compressor and test on a cold-flow turbocharger test rig. A Taguchi L27 orthogonal array is selected for analysis of the data. Influence of number of blades, blade angle and rotational speed on output pressure is studied using the analysis of variance (ANOVA) technique. Finally, confirmation tests are conducted to validate the experimental results.FindingsThe optimum design parameters of the vaned diffuser using signal-to-noise ratio analysis were six blades type, blade angle of 18° and rotational speed of 70,000 rpm. Results from ANOVA showed that the speed has the highest influence on output pressure. The number of blades and blade angle produced the least effect on the pressure output.Originality/valueThe study used the turbocharger with the impeller size 60 mm and adapted vaned diffuser to increase the output pressure.

Journal

Industrial Lubrication and TribologyEmerald Publishing

Published: May 8, 2017

References