Caractérisation expérimentale d’une turbine de suralimentation automobile et modélisation de ses courbes caractéristiques de fonctionnement

Abstract : Engine downsizing is potentially one of the most effective strategies being explored to improve fuel economy and reduce emissions. In the field of turbocharging,simulation is limited by the operating characteristics of turbines supplied by the manufacturers. An accurate and precise extrapolation of the turbine performance maps is the main aim of this study. An experimental study was done on a radial turbine of a turbocharger with different techniques to measure the wider turbine performance map possible. Measurements were done on a classic turbocharger test bench with different turbine inlet temperatures. Then air was blown to the compressor inlet and exit: it is the compressor “gavage”. The compressor is then replaced with another one with are versed rotor: this compressor can help the turbine turn and even drive it itself. The lowest mass flow rates are measured even the negative ones. An electromechanical turbine test bench was developed but did not work correctly because of technical problems but future developments are promising. The various experimental techniques used allowed also the measurement of the turbine isentropic efficiency and the turbocharger mechanical efficiency. Finally, many extrapolation models of the turbine performance maps were tested and compared to the experimental results.
Complete list of metadatas

Cited literature [94 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-02193664
Contributor : Abes Star <>
Submitted on : Wednesday, July 24, 2019 - 3:53:06 PM
Last modification on : Thursday, July 25, 2019 - 9:06:33 AM

File

G_SALAMEH.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02193664, version 1

Collections

Citation

Georges Salameh. Caractérisation expérimentale d’une turbine de suralimentation automobile et modélisation de ses courbes caractéristiques de fonctionnement. Thermique [physics.class-ph]. École centrale de Nantes, 2016. Français. ⟨NNT : 2016ECDN0006⟩. ⟨tel-02193664⟩

Share

Metrics

Record views

134

Files downloads

37