Bearing structure and turbocharger
AssigneeIHI Corporation
InventorsYutaka Uneura, Takahiro Tanaka, Hiroki Mochizuki, Shunsuke Nishii, Hideyuki Kojima
Life of this patent
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Abstract
A bearing structure includes: a shaft provided with a turbine impeller; a pair of rolling bearings accommodated in a bearing hole and each including: an inner ring provided to the shaft; and an outer ring having a damper portion formed on an outer periphery of the outer ring; an opposing surface opposed to, from a turbine impeller side, a lateral surface of the outer ring of the rolling bearing provided on the turbine impeller side; and a first oil supply groove formed in the opposing surface and opposed to at least the damper portion and the lateral surface of the outer ring.
Claims18
A hearing structure, comprising:
- a shaft provided with a turbine impeller;
- a pair of rolling bearings accommodated in a bearing hole and each including:
- an inner ring mounted on the shaft so as to integrally rotate with the shaft;
- and
- an outer ring having a damper portion formed on an outer periphery of the outer ring;
- an opposing surface opposed to, in an axial direction of the shaft from a turbine impeller side, a lateral surface of the outer ring of the rolling bearing provided on the turbine impeller side;
- and
- a first oil supply groove formed in the opposing surface and opposed to at least the damper portion and the lateral surface of the outer ring.
Dependencies are inferred from the claim text.