A detailed study of two commercial turbocharger compressor impellers with a parallel wall vaneless diffuser is reported. The study shows that present turbocharger compressor maps from different sources cannot be reliably compared as random errors can amount to ±0.05 (5 points) on efficiency (20:1 odds). Vaneless diffuser traverses reveal a flow field with backflow and separated regions. The quantitative traverse results reveal the level of uncertainty existent today in such basic deduced parameters as slip factor, backflow loss, rotor efficiency and diffuser recovery. A fully bladed and cutback bladed impeller are compared. Further work is outlined.
Turbocharger Compressor Performance Evaluation and Critical Flow Field Measurements
Sae Technical Papers
1979 Automotive Engineering Congress and Exposition ; 1979
1979-02-01
Conference paper
English
Turbocharger Compressor Performance Evaluation and Critical Flow Field Measurements
Automotive engineering | 1979
|Evaluation of Imperial Performance Characteristic of Turbocharger Turbine and Compressor
British Library Conference Proceedings | 2006
|Improved performance prediction model for turbocharger compressor
Automotive engineering | 2008
|Improved Performance Prediction Model for Turbocharger Compressor
British Library Conference Proceedings | 2008
|