Investigation of Radial Turbocharger Turbine Characteristics under Real Conditions

2009-01-0311

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
The paper deals with investigation of flow characteristics of turbocharger turbine under real operating conditions on engine by means of combination of experimental data and advanced 1-D code for combustion engine simulation.
Coupling simulations tools with the results of measurements provides the engineers with data which are difficult or impossible to measure. For instance by means of a three pressure analysis (TPA) applicable on engine cylinder the engineers can obtain burn rate, valve flow and residual gas compound from measured pressure traces in cylinder and at inlet and outlet ports.
A method for turbocharger turbine on engine identification similar in principle to the three pressure analysis has been applied on radial turbine with variable geometry. A new computational module has been developed to allow identification of instantaneous flow and efficiency characteristics of the turbine.
The method is based on simultaneous measurement of turbine inlet and outlet average pressure as well as pressure oscillations and instantaneous turbocharger speed measurement. Measured data were then used as boundary conditions for 1-D simulation model.
The method allows modifications of steady state turbine characteristics towards the pulsating flow characteristics. Steady state engine operation has been investigated in this phase.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-0311
Pages
11
Citation
Vávra, J., Macek, J., Vítek, O., and Takáts, M., "Investigation of Radial Turbocharger Turbine Characteristics under Real Conditions," SAE Technical Paper 2009-01-0311, 2009, https://doi.org/10.4271/2009-01-0311.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-0311
Content Type
Technical Paper
Language
English