A novel experimental method to evaluate the impact of the volute's asymmetry on the performance of a high pressure ratio turbocharger compressor

LIN Yun; ZHENG Xinqian; JIN Lei; TAMAKI Hideaki; KAWAKUBO Tomoki

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A novel experimental method to evaluate the impact of the volute's asymmetry on the performance of a high pressure ratio turbocharger compressor

LIN Yun 1,ZHENG Xinqian 1 * #,JIN Lei 1,TAMAKI Hideaki 2,KAWAKUBO Tomoki 2

1.State Key Laboratory of Automotive Safety and Energy, Tsinghua Univeristy, Beijing 100084

2.IHI Corporation, Tokyo, Japan

*Correspondence author

#Submitted by

Subject:

Funding: Specialized Research Fund for the Doctoral Program of Higher Education （No. No. 200800031075）, National Natural Science Foundation of China （No. No. 50806040）

Opened online: 9 March 2012

Accepted by: none

Citation: LIN Yun,ZHENG Xinqian,JIN Lei.A novel experimental method to evaluate the impact of the volute's asymmetry on the performance of a high pressure ratio turbocharger compressor[OL]. [ 9 March 2012] http://en.paper.edu.cn/en_releasepaper/content/4469699

All components of a turbocharger compressor are axisymmetric except for the spiral-shaped, gas-collecting overhung volute. In this paper, a novel experimental method to evaluate the impact of the volute's asymmetry on centrifugal compressor performance is proposed and applied to a high pressure-ratio turbocharger compressor. This method can isolate the impact of the volute's asymmetry on the compressor performance for the first time. Experiments prove the considerable impact of the volute's asymmetry on the compressor performance, especially on the stability and efficiency. The impact of the volute's asymmetry on compressor stability correlates with rotational speed and therefore with pressure ratio; constricting the stable flow range by up to 47 percent and decreasing the maximum efficiency by 4.8 percent at design speed. The results provide evidence to exploit the potential of intrinsic non-axisymmetric flow induced by asymmetric volute to improve the performance of turbocharger compressor with high pressure ratio.

Keywords:power machinery and engineering; high pressure ratio; turbocharging; centrifugal compressor; volute

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