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US 11,300,140 B2Granted
Compressor wheel and supercharger
AssigneeMitsubishi Heavy Industries Engine & Turbocharger, Ltd.
InventorsKeigo Sakamoto, Shigeyoshi Sakuma, Eigo Katou, Masahiro Nakamura, Takashi Arai, Yusuke Furuta, Makoto Ozaki
Life of this patent
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Abstract
A compressor wheel includes a compressor wheel body, and a thermal insulating coating layer disposed so as to cover at least a part of a back surface of the compressor wheel body.
Claims5
A compressor wheel comprising:
- a compressor wheel body;
- and
- a thermal insulating coating layer disposed so as to cover at least a part of a back surface, in contact with air, of the compressor wheel body,
- wherein the thermal insulating coating layer is disposed outside of two-thirds of an external dimension of the back surface of the compressor wheel body in a direction perpendicular to an axial direction of the compressor wheel,
- wherein the back surface of the compressor wheel body includes a flat surface including a contact portion configured to come into contact with a retaining portion of a rotational shaft when the compressor wheel is attached to the rotational shaft, and
- wherein a boundary between the thermal insulating coating layer and the back surface on which the thermal insulating coating layer is not disposed is located at or outside of two-thirds of the external dimension of the back surface of the compressor wheel body in the direction perpendicular to the axial direction of the compressor wheel.
3 more elements
Dependencies are inferred from the claim text.