Bearing device for turbocharger
AssigneeMitsubishi Heavy Industries, Ltd.
InventorKeitaro Kamata
Life of this patent
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Abstract
A bearing for a turbocharger includes a bearing housing having a bearing portion of the turbocharger, a rotor shaft penetrating the interior of the bearing housing, a floating bush interposed between the bearing portion and the rotor shaft and configured to supply lubricating oil to an outer peripheral surface and an inner peripheral surface via an oil supply hole interconnecting the outer and inner peripheral surfaces, and a pressure receiving part for generating pressure by catching the flow of the lubricating oil, which is provided at a position on the inner peripheral surface of the floating bush not communicating with the oil supply hole.
Claims14
A bearing device for a turbocharger, comprising:
- a bearing housing interposed between a turbine housing and a compressor housing of a turbocharger for pressurizing supply air to a combustion chamber of an internal combustion engine, the bearing housing having a bearing portion;
- a rotor shaft of a turbine rotor arranged to pass through the bearing housing;
- and
- a floating bush interposed between the bearing portion and the rotor shaft, having an oil supply hole which interconnects an outer peripheral surface and an inner peripheral surface, and being configured to supply lubricating oil from the bearing housing to the outer peripheral surface and the inner peripheral surface,
- wherein the inner peripheral surface of the floating bush is provided with a pressure receiving part for generating pressure by catching flow of the lubricating oil, the pressure receiving part being provided along the inner peripheral surface and at a position avoiding communication with the oil supply hole.
Dependencies are inferred from the claim text.