CENTRIFUGAL COMPRESSOR AND TURBOCHARGER INCLUDING THE SAME

A centrifugal compressor includes an impeller and a housing having a scroll passage of spiral shape formed on an outer peripheral side of the impeller. When a circumferential-directional position of the scroll passage is represented by an angular position with respect to a scroll end of the scroll passage, and in a cross-section obtained by cutting the scroll passage along a plane including a rotational axis of the impeller at a circumferential-directional position where the angular position is θ, F(θ) is defined as: F(θ)=(A/R)/r, where A is a cross-sectional area of the scroll passage, R is a distance from the rotational axis to a scroll center of the cross-section of the scroll passage, and r is a radius of the impeller, 0.35≤F(360°)≤0.65, and 0.08×F(360°)≤F(60°)≤0.4×F(360°).