| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal compressor and a supercharger capable of reducing a surging limit flow rate to keep efficiency when an intake amount is decreased. SOLUTION: The centrifugal compressor comprises a compressor impeller 13, a compressor housing 19 provided with a flow passage wall 29 extending from a suction port 27 to an outer peripheral portion of the compressor impeller 13, and a throttling mechanism 31 arranged on the flow passage wall 29 on the suction port 27 side near the compressor impeller 13 and changing a flow passage area of fluid flowing from the suction port 27 to the compressor impeller 13. COPYRIGHT: (C)2010,JPO&INPIT
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