Back to results
US 11,339,794 B2Granted
Turbocharger
AssigneeIHI Corporation
InventorsYutaka Uneura, Hideyuki Kojima, Takahiro Tanaka, Shunsuke Nishii, Hiroki Mochizuki
Life of this patent
Estimating the term…
Abstract
A turbocharger includes ball bearings each including an inner ring and an inner ring mounted to a shaft, and an outer ring and an outer ring provided so as to be relatively rotatable in a bearing hole, and damper portions formed in at least one of outer peripheral surfaces of the outer ring and the outer ring and opposed surfaces of inner peripheral surface of the bearing hole opposed to the outer peripheral surfaces of the outer ring and the outer ring.
Claims13
A turbocharger, comprising:
- a housing having a bearing hole;
- a shaft having a turbine impeller provided at a first end and a compressor impeller provided at a second end;
- a pair of angular contact ball bearings, each of which has an inner ring mounted to the shaft, and an outer ring provided so as to be rotatable relative to the bearing hole;
- and
- a damper portion, which is formed in at least one of an outer peripheral surface of the outer ring and an opposed surface of an inner peripheral surface of the bearing hole opposed to the outer peripheral surface,
- wherein each of the pair of angular contact ball bearings includes a center line connecting a contact point between the outer ring and rolling elements, and a contact point between the inner ring and the rolling elements, and
- wherein the pair of angular contact ball bearings is provided in the bearing hole in a face-to-face duplex combination so that the center lines of the pair of angular contact ball bearings are closer to each other toward an axis of the shaft.
4 more elements
Dependencies are inferred from the claim text.