公开(公告)号：US20230407875A1

公开(公告)日：2023-12-21

申请号：US17752340

申请日：2022-05-24

Applicant: BorgWarner Inc.

Inventor： Timothy Mark House ,  Augustine Cavagnaro ,  Zachary S. Ashton ,  Kenneth Richard Bischof

IPC: F04D29/056 ,  F04D17/10 ,  F02B39/14

CPC classification number: F04D29/056 ,  F02B39/14 ,  F04D17/10

Abstract: A bearing housing assembly includes a bearing housing and a bearing assembly. The housing extends along an axis and has a cross-bore surface defining a cross-bore to receive lubricant and a feed groove surface defining a feed groove. The feed groove surface has a constant radial portion extending circumferentially about a majority of the axis with a first groove radius that is constant and an expanded radial portion extending from the constant radial portion circumferentially about the axis with a second groove radius larger than the first groove radius. The bearing housing also has an interior surface having an interior radius smaller than the first groove radius and defining an interior. The bearing assembly is disposed in the interior and includes an outer race having a receiving groove surface defining a receiving groove, an inner race, and a rolling element disposed between the outer race and the inner race.

公开(公告)号：US11846294B1

公开(公告)日：2023-12-19

申请号：US17752340

申请日：2022-05-24

Applicant: BorgWarner Inc.

Inventor： Timothy Mark House ,  Augustine Cavagnaro ,  Zachary S. Ashton ,  Kenneth Richard Bischof

IPC: F04D29/056 ,  F02B39/14 ,  F04D17/10

CPC classification number: F04D29/056 ,  F02B39/14 ,  F04D17/10

Abstract: A bearing housing assembly includes a bearing housing and a bearing assembly. The housing extends along an axis and has a cross-bore surface defining a cross-bore to receive lubricant and a feed groove surface defining a feed groove. The feed groove surface has a constant radial portion extending circumferentially about a majority of the axis with a first groove radius that is constant and an expanded radial portion extending from the constant radial portion circumferentially about the axis with a second groove radius larger than the first groove radius. The bearing housing also has an interior surface having an interior radius smaller than the first groove radius and defining an interior. The bearing assembly is disposed in the interior and includes an outer race having a receiving groove surface defining a receiving groove, an inner race, and a rolling element disposed between the outer race and the inner race.

公开(公告)号：US11506078B1

公开(公告)日：2022-11-22

申请号：US17523120

申请日：2021-11-10

Applicant: BorgWarner Inc.

Inventor： Erwin Perry Ellwood, III ,  Kenneth Richard Bischof ,  Raj Chandramohanan

IPC: F01D25/16 ,  F02B37/10 ,  F16C33/58 ,  F02B37/00

Abstract: A turbocharger includes a shaft, a compressor wheel, a turbine wheel, and a bearing assembly including an inner race, a first outer race spaced from the inner race, a second outer race spaced from the inner race, a first rolling element disposed between the first outer race and the inner race, and a second rolling element disposed between the second outer race and the inner race. The bearing assembly includes a first biasing member configured to bias the first outer race toward the second outer race and against the first rolling element, and preload the first rolling element with a preloading force, and a second biasing member configured to bias the second outer race toward the first outer race and against the second rolling element, and preload the second rolling element with a second preloading force. The first preloading force is different than the second preloading force.

公开(公告)号：US11536159B1

公开(公告)日：2022-12-27

申请号：US17553901

申请日：2021-12-17

Applicant: BorgWarner Inc.

Inventor： Erwin Perry Ellwood, III ,  Kenneth Richard Bischof ,  Raj Chandramohanan

IPC: F01D25/18 ,  F01D25/16 ,  F02C6/12 ,  F16C33/58 ,  F16C33/66 ,  F16C27/04

Abstract: A bearing assembly for supporting rotation of a shaft in a turbocharger includes an inner race extending along an axis. The inner race is configured to be coupled to the shaft. The bearing assembly also includes an outer race spaced radially from the inner race and a cage disposed radially between the inner race and the outer race. The bearing assembly further includes a rolling element disposed radially between the outer race and the inner race. The rolling element is disposed within the cage for supporting rotation of the shaft. The outer race defines a lubricant passageway configured to direct lubricant toward the cage.

公开(公告)号：US10557498B1

公开(公告)日：2020-02-11

申请号：US16158962

申请日：2018-10-12

Applicant: BorgWarner Inc.

Inventor： Kenneth Richard Bischof ,  Zachary S. Ashton

IPC: F16C17/02 ,  F16C17/10 ,  F16C27/02 ,  F16C33/10 ,  F01D25/16 ,  F04D29/047 ,  F16C17/18 ,  F01D25/18

Abstract: A full-floating bearing for reducing vibration of a shaft of a turbocharger has a central axis and includes an outer surface and an inner surface. The outer surface is configured to face away from the central axis. The inner surface is configured to face the central axis and is radially spaced from the outer surface such that the inner surface is configured to be disposed between the central axis and the outer surface. An aperture is defined between the outer surface and the inner surface and configured to allow lubricant to flow between the outer surface and the inner surface. The inner surface has a surface profile for reducing vibration of the shaft of the turbocharger. The surface profile is defined by the equation Ro=Rb+A Sin(3θ+Φ).