Investigation on Partial Performance of Radial Turbine Rotor in Variable Geometry Turbocharger

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  • 可変容量タービン向けロータの性能解析
  • カヘン ヨウリョウ タービン ムケ ロータ ノ セイノウ カイセキ

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Turbine rotor shapes for a variable geometry turbocharger have been investigated by numerical simulations in order to improve the low speed performances of a supercharged engine. With focusing on the vortex flow generated inside rotors at the low flow rate, the rotor blade shapes to make the vortex flow diminish were examined and designed. The application of newly designed turbine rotor to an actual turbocharger for a diesel engine has brought about improvements in the turbine efficiency at the lowest flow rate without performance decrement at the higher flow rate.

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