| 摘要 |
PROBLEM TO BE SOLVED: To improve drain oil properties for a lubricant in a thrust bearing.SOLUTION: A supercharger includes: a thrust bearing which has an opposite surface fixed to a supercharger body, the opposite surface being opposed to a thrust collar in the shaft direction of a turbine shaft; and a supply oil path which is provided in the supercharger body and supplies a lubricant to the opposite surface of the thrust bearing. The thrust bearing has: an insertion hole 23a through which the turbine shaft is disposed; a plurality of pressure reception parts 32 which are provided so as to be shifted in phase in the rotating direction of the turbine shaft, and forms an oil film between themselves and the thrust collar and receive a thrust load by oil film pressure; and a plurality of interposing parts 35 which are located on the opposite surface between the pressure reception parts adjacent to each other in the rotating direction of the turbine shaft, and more apart from the thrust collar than from the pressure reception parts. Some or all of interposing parts 35a located vertically below the insertion hole are more apart from the thrust collar than from the other interposing parts. |
