| 摘要 |
PROBLEM TO BE SOLVED: To supply lubricating oil to bearings regardless of the operating state of a supercharger, and to suppress mechanical losses generated in the bearings by preventing foreign matters from intruding into the bearings, in a structure with an interposing portion such as a spacer and a spring arranged between the two opposed bearings.SOLUTION: This supercharger includes: a turbine shaft; the two bearings 11 arranged in a bearing housing, separated from each other, and rotatably pivotally supporting the turbine shaft; an oil film damper 10 arranged in the bearing housing, holding the two bearings, and suppressing the vibration of the turbine shaft by forming an oil film between the bearing housing and the oil film damper; the interposing portion 17 arranged between the two bearings, and maintaining an interval between the two bearings; and through holes 10b penetrating the vicinity of the bearings from the outside of the oil film damper through, and allowing the lubricating oil to flow therein. The interposing portion is provided with oil introducing portions 17a arranged near the bearings for introducing the lubricating oil supplied from the through holes to the bearings. |
