Multi-segment turbocharger bearing housing and methods therefor

A method for enclosing a rotating assembly (114, 214, 314) of a turbocharger (102, 202, 302), the method comprising:

• providing at least two bearing housing segments (189, 190;
• 289, 290;
• 389, 390) which together form a bearing housing (160, 260, 360) including a bearing bore (177, 178) and an insert bore (179);
• machining complementary mating faces (196, 197) of the segments;
• machining features (193) as required for alignment and fastening of the segments to each other;
• machining the bearing bore (177, 178) and the insert bore (179);
• machining oil feed passages (181-183) and oil drain features (145, 187) into at least one segment, wherein at least one oil feed bore (181, 182) is drilled from the radially inner surface of the corresponding bearing housing segment;
• balancing a rotating assembly (114, 214, 314);
• installing the rotating assembly (114, 214, 314) into at least one of the bearing housing segments (189, 190;
• 289, 290;
• 389, 390);
• and
• joining the segments together to enclose the rotating assembly (114, 214, 314).

A method for enclosing a rotating assembly (114, 214, 314) of a turbocharger (102, 202, 302), the method comprising:

• providing at least two bearing housing segments (189, 190;
• 289, 290;
• 389, 390) which together form a bearing housing (160, 260, 360) including a bearing bore (177, 178) and an insert bore (179);
• machining complementary mating faces (196, 197) of the segments, wherein the complementary mating faces (196, 197) of the segments are parallel with an axis of the bearing bore;
• machining the bearing bore (177, 178) and the insert bore (179);
• balancing a rotating assembly (114, 214, 314) including a shaft (112), and a compressor wheel (120) and a turbine wheel (110) disposed on opposite ends of the shaft (112);
• installing the rotating assembly (114, 214, 314) into at least one of the bearing housing segments (189, 190;
• 289, 290;
• 389, 390);
• and
• joining the segments together to enclose the rotating assembly (114, 214, 314).