GUI LIN NEW GLORY MACHINERY CO., LTD : principle of turbocharger (II)

The impeller

As the gasoline engine speed range is wide, the air flow rate changes greatly, so the turbocharger compressor impeller shape is a complicated ternary-curved ultra-thin-walled impeller blade, generally 12 to 30 blades, arranged in a radial curve, the blade thickness is less than 0.5 mm, using aluminum with a special casting method. The blade shape directly affects the performance of turbocharged engines. The more reasonable the impeller shape Angle, the lighter the mass, the more sensitive the impeller start, the turbocharger's inherent defect "response lag" is also smaller.

This paper by guilin new ronghuang machinery co., LTD