The Effect of Compressor and Turbine Specific Speed on Turbocharger Efficiency and Engine Performance

790065

02/01/1979

Event
1979 Automotive Engineering Congress and Exposition
Authors Abstract
Content
As a result of dimensional and cost limitations, the specific speed of today's turbochargers for vehicular diesel engine applications are higher than optimum. Performance of turbochargers therefore falls below the state-of-the-art.
According to the analysis presented in this paper, one avenue for improvement of turbocharger overall efficiency is reduction of compressor and turbine specific speed. A technique for optimizing turbocharger overall performance is presented, based on variation of component specific speed.
It is concluded that the concept of lower specific speed turbochargers deserves further study. It is essential that the balance between the advantages and disadvantages of this concept be carefully evaluated by turbocharger and diesel engine manufacturers.
Meta TagsDetails
DOI
https://doi.org/10.4271/790065
Pages
6
Citation
Spraker, W., and Chou, C., "The Effect of Compressor and Turbine Specific Speed on Turbocharger Efficiency and Engine Performance," SAE Technical Paper 790065, 1979, https://doi.org/10.4271/790065.
Additional Details
Publisher
Published
Feb 1, 1979
Product Code
790065
Content Type
Technical Paper
Language
English