Synthetic resin-made sliding bearing
US-2015377286-A1 · Dec 31, 2015 · US
Turbocharger and method of manufacturing floating bush
US9726189B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9726189-B2 |
| Application number | US-201213993275-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 13, 2012 |
| Priority date | Mar 29, 2011 |
| Publication date | Aug 8, 2017 |
| Grant date | Aug 8, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A turbocharger and a method of manufacturing a floating bush with which noise can be reduced, and the rotation speed can be increased. In a turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by an inner circumferential surface disposed so as to surround the rotating shaft in a bearing housing, an inner circumferential surface of each of the floating bushes has a non-circular shape in which the curvature of the cross-sectional shape varies in the circumferential direction.
First claim
Opening claim text (preview).
The invention claimed is: 1. A turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by a support portion disposed so as to surround the rotating shaft in a housing, wherein an inner circumferential surface of each of the floating bushes has an elliptical shape in which a curvature of a cross-section varies in a circumferential direction, and a pair of the floating bushes are connected together, and phases of the ellipses formed on the inner circumferential surfaces of the floating bushes are shifted from each other. 2. The turbocharger according to claim 1 , wherein an inner circumferential surface of the support portion has a non-circular shape in which a curvature of a cross-section varies in a circumferential direction. 3. The turbocharger according to claim 1 wherein the phases of the ellipses formed on the inner circumferential surfaces of the floating bushes are shifted from each other by 90°. 4. A method of manufacturing a floating bush that supports a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor, the floating bush having an inner circumferential surface that has a non-circular cross-section, the method comprising: deforming a cylindrical member into a flattened shape by applying pressing forces to a side surface thereof from two opposing directions with respect to an axis; forming a hole having a circular shape centered on the axis so as to penetrate the deformed cylindrical member; and removing the pressing forces.
Assignees
Inventors
Classifications
Sliding contact bearing (gas bearings F01D25/22) · CPC title
Shape · CPC title
by grinding · CPC title
- F16C17/18Primary
with floating brasses or brushing, rotatable at a reduced speed {(F16C17/03, F16C17/06 take precedence)} · CPC title
Assembling sliding-contact bearings · CPC title
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- What does patent US9726189B2 cover?
- A turbocharger and a method of manufacturing a floating bush with which noise can be reduced, and the rotation speed can be increased. In a turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by an inner circumferential surfa…
- Who is the assignee on this patent?
- Nishida Hideaki, Kamata Keitaro, Tomita Isao, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification F16C17/18. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 08 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).