Anisotropic bearing supports for turbochargers
AssigneeHoneywell International Inc.
InventorsWalter Lee Meacham, Kostandin Gjika, Mohsiul Alam, Gerald D. LaRue
Life of this patent
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Abstract
An exemplary anisotropic member supports a semi-floating bearing in a bore and can reduce non-synchronous vibration of the bearing in the bore. An anisotropic member can include an annular body configured to receive a semi-floating bearing and to space the bearing a distance from a bore surface and can be configured to impart anisotropic stiffness and damping terms to the semi-floating bearing when positioned in the bore. Such a member is suitable for use in a rotating assembly for a turbocharger where the bearing may be a semi-floating bearing. Various exemplary members, bearings, housings, assemblies, etc., are disclosed.
Claims22
A rotating assembly for a turbocharger comprising:
- a center housing that comprises a through bore having a central axis;
- a semi-floating bearing positioned in the through bore;
- a locating pin for limiting rotation of the semi-floating bearing in the through bore;
- an anisotropic member positioned in the through bore between the semi-floating bearing and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing;
- and
- a shaft, rotatably supported in the center housing by the semi-floating bearing, the shaft connected at one end to a compressor wheel and at another end to a turbine wheel.
A rotating assembly for a turbocharger comprising:
- a center housing that comprises a through bore having a central axis;
- a semi-floating bearing positioned in the through bore wherein the semi-floating bearing comprises a radial groove and a piston ring seated in the groove that forms a seal between the semi-floating bearing and a surface of the center housing wherein the surface defines at least part of the through bore;
- an anisotropic member positioned in the through bore between the semi-floating bearing and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing;
- and
- a shaft, rotatably supported in the center housing by the semi-floating bearing, the shaft connected at one end to a compressor wheel and at another end to a turbine wheel.
A rotating assembly for a turbocharger comprising:
- a center housing that comprises a through bore having a central axis;
- a semi-floating bearing positioned in the through bore;
- an anisotropic member positioned in the through bore between the semi-floating bearing and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing and wherein the anisotropic member comprises a ring and a series of lobes arranged about the ring;
- and
- a shaft, rotatably supported in the center housing by the semi-floating bearing, the shaft connected at one end to a compressor wheel and at another end to a turbine wheel.
A rotating assembly for a turbocharger comprising:
- a center housing that comprises a through bore having a central axis;
- a semi-floating bearing positioned in the through bore;
- a seal ring and an anisotropic member positioned in the through bore between the semi-floating bearing and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing;
- and
- a shaft, rotatably supported in the center housing by the semi-floating bearing, the shaft connected at one end to a compressor wheel and at another end to a turbine wheel.
A rotating assembly for a turbocharger comprising:
- a center housing that comprises a through bore having a central axis;
- a semi-floating bearing positioned in the through bore;
- an anisotropic member positioned in the through bore between the semi-floating bearing and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing wherein the anisotropic member comprises a first segment having a first axial width and a second segment having a second axial width and wherein the first axial width differs from the second axial width;
- and
- a shaft, rotatably supported in the center housing by the semi-floating bearing, the shaft connected at one end to a compressor wheel and at another end to a turbine wheel.
Dependencies are inferred from the claim text.