| 主权项 |
1. A supercharger comprising:
an impeller; a compressor housing including an inlet portion configured to form part of an intake passage of an internal combustion engine, wherein the inlet portion draws intake air toward the impeller; a drawing passage that extends through the inlet portion and draws blow-by gas from outside the inlet portion to inside the inlet portion; and a throttling portion arranged at a joined portion of the intake passage, which is formed inside the inlet portion, and the drawing passage, wherein the throttling portion has a cross-sectional passage area at the joined portion that is smaller than a cross-sectional passage area of a portion located at an intake air upstream side of the joined portion and a cross-sectional passage area of a portion located at an intake air downstream side of the joined portion. |
