公开(公告)号：US10190634B1

公开(公告)日：2019-01-29

申请号：US15646633

申请日：2017-07-11

Applicant: GM Global Technology Operations LLC

Inventor： Fanghui Shi ,  Dingfeng Deng ,  Ran Wu ,  Louis P. Begin ,  Yuli Huang

IPC: F16C17/18 ,  F16C33/10 ,  F16C33/66 ,  F01D25/16 ,  F01D25/18 ,  F16C32/06

Abstract: A turbocharger including a housing and a rotary assembly disposed within the housing and including a turbine wheel and a compressor wheel attached to one another by a shaft. The rotary assembly being subject to aero-load in a lateral direction. A bearing is disposed in the housing and rotatably supports the shaft, the bearing including an inner bearing surface that engages the shaft and an outer bearing surface that engages the housing, the outer bearing surface having a pair of axially extending recessed grooves extending at least partially along the bearing. The pair of axially extending grooves being located perpendicular to the aero-load direction.

公开(公告)号：US10113587B1

公开(公告)日：2018-10-30

申请号：US15683275

申请日：2017-08-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Rajasekhar Nicodemus ,  Fanghui Shi ,  Sudipto Ray ,  Dingfeng Deng ,  Louis Begin ,  Ran Wu

IPC: F16C33/10

Abstract: An improved thrust bearing for a turbocharger includes a first bearing surface, a second bearing surface, an internal passageway, a primary pad, and a plurality of secondary pads. The internal passageway fluidly connects the first and second bearing surfaces. The primary pad may be defined on the first bearing surface. The primary pad further defines a first aperture in fluid communication with the internal passageway and an oil feed defined in a turbocharger housing. The plurality of secondary pads may also be defined on the first bearing surface. Each secondary pad in the plurality of secondary pads may include a secondary surface area which is smaller than the primary surface area of the primary pad.

公开(公告)号：US20160215785A1

公开(公告)日：2016-07-28

申请号：US14602405

申请日：2015-01-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Louis P. Begin ,  Dingfeng Deng ,  Isaac H. Y. Du

IPC: F04D29/056 ,  F04D17/10 ,  F04D25/04 ,  F02M25/07

CPC classification number: F04D29/056 ,  F01D25/166 ,  F02B37/00 ,  F04D25/024 ,  F05D2220/40 ,  F05D2240/53 ,  F16C17/02 ,  F16C17/18 ,  F16C17/26 ,  F16C27/02 ,  F16C2360/24

Abstract: A turbocharger for an internal combustion engine includes a bearing housing defining a bearing bore and a hybrid journal bearing system disposed within the bore. The hybrid journal bearing system includes first and second journal bearings. The first journal bearing is a semi-floating bearing and the second journal bearing is a full-floating bearing. The turbocharger also includes a shaft having a first end and a second end, wherein the shaft is supported by the journal bearing system for rotation about an axis within the bore. The turbocharger also includes a turbine wheel fixed to the shaft proximate to the first end and configured to be rotated about the axis by post-combustion gases emitted by the engine. Additionally, the turbocharger includes a compressor wheel fixed to the shaft proximate to the second end and configured to pressurize an airflow being received from the ambient for delivery to the engine.

Abstract translation: 用于内燃机的涡轮增压器包括限定轴承孔的轴承壳和设置在孔内的混合轴颈轴承系统。 混合轴颈轴承系统包括第一和第二轴颈轴承。 第一轴颈轴承是半浮动轴承，第二轴颈轴承是全浮动轴承。 涡轮增压器还包括具有第一端和第二端的轴，其中轴由轴颈轴承系统支撑以围绕孔内的轴线旋转。 涡轮增压器还包括涡轮机叶轮，其固定到靠近第一端的轴，并且构造成通过发动机排放的后燃烧气体围绕轴旋转。 另外，涡轮增压器包括压缩机叶轮，该压缩机叶轮固定到靠近第二端的轴上，并且构造成对从环境接收的气流进行加压以输送到发动机。

公开(公告)号：US20160115909A1

公开(公告)日：2016-04-28

申请号：US14520794

申请日：2014-10-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Louis P. Begin ,  Ran Wu ,  Dingfeng Deng

IPC: F02M25/07 ,  F04D29/051 ,  F16C32/06

CPC classification number: F02M26/04 ,  F04D25/024 ,  F04D29/051 ,  F04D29/0513 ,  F05D2220/40 ,  F16C17/02 ,  F16C17/047 ,  F16C17/18 ,  F16C32/0651 ,  F16C33/1065 ,  F16C33/1075 ,  F16C2240/42 ,  F16C2360/24

Abstract: A turbocharger for an internal combustion engine includes a bearing housing and a rotating assembly arranged therein. The rotating assembly includes a shaft with a turbine wheel and a compressor wheel. The turbocharger also includes a thrust bearing assembly operatively connected to the shaft, lubricated by pressurized oil from the engine, and configured to transmit thrust forces developed by the turbine wheel to the bearing housing. The thrust bearing assembly includes a thrust plate having a first thrust face and a thrust washer having a second thrust face. An oil film is generated between the first and second thrust faces, and the first and second thrust faces rotate relative to each other and transmit the thrust forces to the bearing housing. The thrust plate and/or the thrust washer include a circumferential groove configured to trap oil-borne debris and minimize an amount of the debris in the oil film.

Abstract translation: 用于内燃机的涡轮增压器包括轴承壳体和布置在其中的旋转组件。 旋转组件包括具有涡轮机叶轮和压缩机叶轮的轴。 涡轮增压器还包括可操作地连接到轴的推力轴承组件，其由来自发动机的加压油润滑，并且构造成将由涡轮机叶轮产生的推力传递到轴承壳体。 推力轴承组件包括具有第一推力面的推力板和具有第二推力面的推力垫圈。 在第一和第二推力面之间产生油膜，并且第一和第二推力面相对于彼此旋转并将推力传递到轴承壳体。 推力板和/或止推垫圈包括周向凹槽，其构造成捕获油性碎屑并使油膜中碎屑的量最小化。