| 摘要 |
PROBLEM TO BE SOLVED: To attain the compatibility between the performance advance of a turbine impeller 27 and the durability enhancement of the same. SOLUTION: A length, that is present on an arbitrary lateral cross-sectional surface parallel to the axis SC of the turbine impeller 27 and ranges from a virtual reference line VL, that passes a basal end of a radial outer edge in a turbine blade 33 and besides is perpendicular to the axis SC of a turbine hub 29, to a backside of the turbine hub 29, gradually increases as coming closer to a side of the axis SC of the turbine hub 29. COPYRIGHT: (C)2010,JPO&INPIT
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