| 摘要 |
<p>A turbocharger (5) comprising a housing (10) including a compressor shroud (14) and a turbine shroud (12). The turbocharger (5) also includes a compressor wheel (18) and a turbine wheel (116 , 216 , 316 , 416). The compressor wheel (18) includes a compressor hub (44) and a plurality of circumferentially spaced compressor blades (45, 46) extending radially from the compressor hub (44). The turbine wheel (116 , 216 , 316 , 416) includes a turbine hub (124 ,224 , 324, 424) and a plurality of circumferentially spaced blades (126 , 226 , 326 , 426) extending radially from the turbine hub (124 , 224 ,324 ,424) with a hub surface (125 , 225, 325 , 425) extending between adjacent blades (126, 226, 326 , 426). The turbine wheel (116, 216 , 316 , 416) also includes at least one surface discontinuity (135, 235, 335 ,435) on the turbine hub surface (125, 225 ,325, 425).</p> |
