| 摘要 |
<p>In a turbocharger that includes a bearing portion supporting a turbine shaft in a bearing housing, a bearing device is provided that reduces the possibility that an oil path penetrating through the bearing portion from an outer circumference to an inner circumference of the bearing portion is blocked by foreign matters contained in a lubricant. The bearing device includes a bearing portion supporting a turbine shaft 1 in a bearing housing 8, a circular oil path 73 formed in a circumferential direction between the bearing housing 8 and the bearing holder 7 of the bearing portion, and a lubricant ejection hole 76 penetrating through the bearing portion from an outer circumference to an inner circumference of the bearing portion so as to receive a supply oil oil from the oil path 73. A foreign matter regulating gap 91 that includes a gap between the outer circumference 71 of the bearing holder 7 and the bearing housing 8 is formed between the circular oil path and the lubricant ejection hole 76. A maximum value C 1 of a gap in the radical direction of the foreign matter regulating gap 91 is smaller than a minimum internal diameter d of the lubricant ejection hole 76.</p> |
