公开(公告)号：WO1991003624A1

公开(公告)日：1991-03-21

申请号：PCT/US1990002522

申请日：1990-05-07

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  GUTKNECHT, Daniel, Allen ,  HO, I-Chung

IPC: F01D25/12

CPC classification number: F01D25/125 ,  F01D25/145 ,  F05D2220/40

Abstract: A turbocharger includes a backplate (54) separate from both the center housing (12) and the turbine housing (22) which is clamped between the latter by tie bolts (74) extending across the center housing (12) so that the tensile/shear forces transmitted throughthe head of the tie bolt (74) are taken on the relatively cool compressor side of the center housing (12). The turbine backplate (54), since it is a separate member, may be made from a material having a relatively low thermal conductivity, thereby serving as a heat barrier between the turbine section and the center housing (12) of the turbocharger. The separate backplate (54) permits manufacture of the center housing (12) by an inexpensive die casting process. An oil splash shield (70) cooperates with the turbine backplate (54) to prevent oil from splashed against the warm parts of the assembly, and also cooperates with the turbine backplate (54) to define a chamber therebetween that also further increases thermal insulation of the center housing (12) from the relatively warm turbine housing (22).

公开(公告)号：WO1991009210A2

公开(公告)日：1991-06-27

申请号：PCT/US1990002526

申请日：1990-05-07

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  GUTKNECHT, Daniel, Allen

IPC: F01D25/12

CPC classification number: F16C19/184 ,  F01D25/125 ,  F05D2220/40 ,  F16C19/52 ,  F16C35/063 ,  F16C2360/24

Abstract: An exhaust gas driven turbocharger includes a housing (12), and a shaft (32) rotatably supporting a compressor wheel (38) and a turbine wheel (30) for rotation within the housing. A cartridge ball bearing assembly (42) supports the shaft for rotation relative to the housing and includes a bearing outer ring (58), a bearing inner ring (66), and roller bearing elements (62) supporting the inner ring for rotation relative to the outer ring. The inner ring is mounted on the shaft by axially spaced faying surfaces (68), the length of which are controlled to minimize heat transfer from the shaft (32) to the bearing assembly (42) while assuring the necessary stiffness of the assembly.

Abstract translation: 由废气驱动的涡轮增压器包括壳体（12），可旋转地携带压缩机叶轮（38）的轴（32）和壳体内的可旋转的涡轮叶轮（30）。 。 滚珠轴承座组件（42）支撑轴使其可以相对于壳体旋转并且包括外座圈（58），内座圈（66）和 滚动辊（62），其承载内圈以使其能够相对于外圈旋转。 内环通过轴向隔开的齐平表面（68）安装在轴上，所述齐平表面（68）的长度被调节成最小化从轴（32）到轴承组件（42）的热传递，而 确保装配所需的刚度。

公开(公告)号：WO1993002278A1

公开(公告)日：1993-02-04

申请号：PCT/US1992004803

申请日：1992-06-09

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  FLEURY, Jean-Luc, Paul ,  LARUE, Gerald, Duane ,  SILVA, Kusumal, Joseph ,  GUTKNECHT, Daniel, Allen ,  GARCIA, Martin, Diego

IPC: F01D05/02

CPC classification number: F01D5/025 ,  F04D29/266

Abstract: A turbocharger (10) includes a compressor wheel (32) and shaft assembly in which a threaded connection is provided between the shaft (18) and the compressor wheel (32). A pair of pilot surfaces (76, 78) on the shaft (18) and on the compressor wheel are located on either end of the threaded sections (64, 66) of the shaft and compressor wheel, and are displaced radially from the threads (64, 66). Accordingly, the piloting functions which assure concentricity between the shaft (18) and compressor wheel (32) are kept entirely separate from the attachment function provided by the threads (64, 66), thereby permitting the concentricity between the compressor wheel (32) and shaft (18) to be held to tighter tolerances than would be possible if the threads (64, 66) also performed a piloting function.

公开(公告)号：WO1991009211A2

公开(公告)日：1991-06-27

申请号：PCT/US1990002525

申请日：1990-05-07

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  GUTKNECHT, Daniel, Allen

IPC: F01D25/16

CPC classification number: F01D25/164 ,  F05D2220/40 ,  F16C19/184 ,  F16C27/045 ,  F16C33/6659 ,  F16C2360/24 ,  Y10S384/906

Abstract: A turbocharger includes a rotating shaft which is supported within the turbocharger center housing (14) by rotational bearing elements. The bearing cartridge is located axially within the housing (14) by a pin (72) which extends through orifices drilled in the center housing (14) and in the bearing outer ring (52). The pin is relatively smooth, so that excursions of the bearing cartridge assembly (24) with the shaft (26) is permitted when the shaft is accelerated through critical rotational speeds. These excursions are damped by lubricating fluid communicated into grooves circumscribing the bearing outer ring (52) through lubrication passages (82, 84) extending through the pin. The lubricating fluid in the grooves communicates into the intersticial space defined between the outer ring (52) of the bearing cartridge assembly and the center housing (14) to thereby dampen the excursions of the bearing cartridge assembly (24).

公开(公告)号：WO1991003625A1

公开(公告)日：1991-03-21

申请号：PCT/US1990002531

申请日：1990-05-07

Applicant: ALLIED-SIGNAL INC.

Inventor： ALLIED-SIGNAL INC. ,  GUTKNECHT, Daniel, Allen

IPC: F01D25/12

CPC classification number: F01D25/14 ,  F01D25/125 ,  F05D2220/40

Abstract: An exhaust gas driven turbocharger includes a center housing (12) comprising a circumferentially extending annular wall (34) enclosing a cavity (36) in which the bearings (40) supporting the turbocharger shaft (24) are mounted. The center housing (12) also includes a separate annular member (48) which extends circumferentially around the shaft (24) and extends radially from the circumferentially extending wall (34) to the shaft (24). A cavity (56) is defined within the annular member (48) which receives coolant from the vehicle coolant system, to thereby control heat transfer from the turbine to the center housing (12) and the bearings (40) contained therewithin.