Turbocharger Compressor Performance Evaluation and Critical Flow Field Measurements

790315

02/01/1979

Event
1979 Automotive Engineering Congress and Exposition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/790315
Pages
20
Citation
Japikse, D., and Goebel, J., "Turbocharger Compressor Performance Evaluation and Critical Flow Field Measurements," SAE Technical Paper 790315, 1979, https://doi.org/10.4271/790315.
Additional Details
Publisher
Published
Feb 1, 1979
Product Code
790315
Content Type
Technical Paper
Language
English