公开(公告)号：US20180258843A1

公开(公告)日：2018-09-13

申请号：US15455699

申请日：2017-03-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: F02B39/14 ,  F02B37/00 ,  F02B33/40 ,  F01D5/04 ,  F01D25/24 ,  F01D25/16 ,  F01D25/18 ,  F04D29/28

CPC classification number: F02B39/14 ,  F01D25/18 ,  F02B33/40 ,  F02B37/00 ,  F05D2220/40 ,  F16C17/18 ,  F16C33/6685 ,  F16C2360/24 ,  Y02T10/144

Abstract: A turbocharger for an internal combustion engine includes a center housing and a bore defined by the center housing. The bore has a primary annular groove and a secondary annular groove configured to receive a fluid. A journal bearing is disposed within the bore proximate to a proximate end of the shaft such that the journal bearing, together with the rotating shaft, feeds fluid to the primary and secondary annular grooves. The shaft is further coupled to a turbine wheel and a compressor wheel. The shaft has a longitudinal axis and is supported by the journal bearing for rotation within the bore about the axis. The primary and secondary annular grooves are each in fluid communication with a drain gallery.

公开(公告)号：US09494189B2

公开(公告)日：2016-11-15

申请号：US14503528

申请日：2014-10-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: F16C33/10 ,  F04D29/056 ,  F02M25/07 ,  F16C17/18 ,  F04D29/057 ,  F04D29/063 ,  F01D25/16 ,  F01D25/18 ,  F16C17/02

CPC classification number: F16C17/18 ,  F01D25/166 ,  F01D25/18 ,  F04D29/057 ,  F04D29/063 ,  F05D2220/40 ,  F05D2250/13 ,  F05D2260/607 ,  F16C17/02 ,  F16C33/105 ,  F16C33/1065 ,  F16C2240/42 ,  F16C2360/24

Abstract: A turbocharger for an internal combustion engine includes a bearing housing and a bearing bore defined by the bearing housing. The bearing bore has an annular bearing groove configured to receive a fluid. A journal bearing is disposed within the bore such that the annular bearing groove encircles the journal bearing and feeds the fluid thereto. The turbocharger also includes a rotating assembly having a shaft with a turbine wheel and a compressor wheel. The shaft has a longitudinal axis and is supported by the journal bearing for rotation within the bore about the axis. The annular bearing groove is characterized by a trapezoidal shape in a cross-sectional view of the bearing bore taken along and through the longitudinal axis. The trapezoidal shape is configured to generate Taylor vortices in the fluid for capturing debris carried by the fluid and keeping the debris from being fed to the journal bearing.

Abstract translation: 用于内燃机的涡轮增压器包括轴承壳体和由轴承壳体限定的轴承孔。 轴承孔具有构造成接收流体的环形轴承槽。 轴颈轴承设置在孔内，使得环形轴承槽环绕轴颈轴承并将流体供给到轴颈轴承。 涡轮增压器还包括具有带有涡轮机叶轮和压缩机叶轮的轴的旋转组件。 轴具有纵向轴线并且由轴颈轴承支撑，用于围绕轴线在孔内旋转。 环形轴承槽的特征在于沿着并穿过纵向轴线的轴承孔的横截面视图中的梯形形状。 梯形形状构造成在流体中产生泰勒涡流，用于捕获由流体携带的碎屑并保持碎屑不被输送到轴颈轴承。