| 摘要 |
<p>An impeller (65) which pressurizes fuel by rotating has a fitting hole (66) which receives an end of a shaft (52). The fitting hole (66) has an arcuate surface (67), an impeller reverse direction contact surface (68), and an impeller forward direction contact surface (69). Defining an imaginary plane (667) as the plane that includes the line of intersection (666) between the impeller reverse direction contact surface (68) and the impeller forward direction contact surface (69) and is tangent to the impeller reverse direction contact surface (68) near the line of intersection (666), and the impeller reverse direction contact surface (68) is formed such that, in cross section, in the direction away from the line of intersection (666) and towards a line of intersection (671), the impeller reverse direction contact surface (68) inclines away from the imaginary plane (667) in the direction opposite of the central axis (CA65).</p> |
