| 主权项 |
1. A turbocharger comprising:
a turbocharger body; a shaft housed in the turbocharger body and provided with wheels on two ends of the shaft, the shaft including
a small-diameter portion, andtwo large-diameter portions formed on two sides in a direction of a rotation axis of the small-diameter portion, respectively, and each having a larger diameter than a diameter of the small-diameter portion; and a semi-floating bearing including
a body of a cylindrical shape into which the shaft is to be inserted,two bearing surfaces formed on an inner peripheral surface of the body, opposed to the large-diameter portions of the shaft, and configured to rotatably support the shaft,a non-bearing surface formed on the inner peripheral surface of the body, located between the two bearing surfaces, and having a larger inner diameter than inner diameters of the bearing surfaces, andan oil passage opened to the non-bearing surface and configured to supply lubricant oil to a gap in a radial direction between the non-bearing surface and the shaft, such that the lubricant oil supplied to the gap lubricates the two bearing surfaces, wherein at least one of the two bearing surfaces extends more in an approaching direction of the two bearing surfaces than the large-diameter portion opposed in the radial direction to the one bearing surface extends. |
