US20040126251A1 - Compressor wheel assembly - Google Patents
Compressor wheel assembly Download PDFInfo
- Publication number
- US20040126251A1 US20040126251A1 US10/691,093 US69109303A US2004126251A1 US 20040126251 A1 US20040126251 A1 US 20040126251A1 US 69109303 A US69109303 A US 69109303A US 2004126251 A1 US2004126251 A1 US 2004126251A1
- Authority
- US
- United States
- Prior art keywords
- bore
- shaft
- compressor wheel
- axial
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
Definitions
- This invention relates to the assembly of a compressor wheel to a rotating shaft.
- the invention relates to the compressor wheel assembly of a turbocharger.
- Turbochargers are well known devices for supplying air to the intake of an internal combustion engine at pressures above atmospheric (boost pressures).
- a conventional turbocharger essentially comprises an exhaust gas driven turbine wheel mounted on a rotatable shaft within a turbine housing. Rotation of the turbine wheel rotates a compressor wheel mounted on the other end of the shaft within a compressor housing. The compressor wheel delivers compressed air to the intake manifold of the engine, thereby increasing engine power.
- the shaft is supported on journal and thrust bearings located within a central bearing housing connected between the turbine and compressor wheel housings.
- a conventional compressor wheel comprises an array of blades extending from a central hub provided with a bore for receiving one end of the turbocharger shaft
- the compressor wheel is secured to the shaft by a nut which threads onto the end of the shaft where it extends through the wheel bore, and bear against the nose end of the wheel to clamp the wheel against a shaft shoulder (or other radially extending abutment that rotates with the shaft).
- a compressor wheel assembly comprising a compressor wheel mounted to a rotating shaft the a extending through a bore provided along the rotational axis of the wheel, wherein the bore has a first axial portion corresponding in diameter to the diameter of the shaft, and a second axial portion of enlarged diameter, such that the inner surface of the second portion of the bore is radially spaced from the shaft.
- the wheel is supported on the shaft by the first axial portion of the bore only. This portion of the bore can be machined to the required diameter along the length of the wheel axis over which the requited degree of accuracy can be readily maintained. The remainder of the bore is simply enlarged so that it will not interfere with the concentric mounting of the wheel on the shaft.
- the invention also provides a turbocharger comprising a compressor wheel assembly as defined above.
- FIG. 1 is an axial cross-section through a conventional turbocharger illustrating the major components of a turbocharger and a conventional compressor wheel assembly;
- FIG. 2 is a cross-section through a compressor wheel assembly in accordance with the present invention.
- FIG. 1 illustrates the basic components of a conventional centripetal type turbocharger.
- the turbocharger comprises a turbine 1 joined to a compressor 2 via a central bearing housing 3 .
- the turbine 1 comprises a turbine housing 4 which houses a turbine wheel 5 .
- the compressor 2 comprises a compressor housing 6 which houses a compressor wheel 7 .
- the turbine wheel 5 and compressor wheel 7 are mounted on opposite ends of a common shaft 8 which is supported on bearing assemblies 9 within the bearing housing 3 .
- the turbine housing 4 is provide with an exhaust gas inlet 10 and an exhaust gas outlet 11 .
- the inlet 10 directs incoming exhaust gas to an annular inlet chamber 12 surrounding the turbine wheel 5 .
- the exhaust gas flows through the turbine and into the outlet 11 via a circular outlet opening which is co-axial with the turbine wheel 5 .
- Rotation of the turbine wheel 5 rotates the compressor wheel 7 which draws in air through axial inlet 13 and delivers compressed air to the engine intake via an annular outlet volute 14 .
- the compressor wheel comprises a plurality of blades 15 extending film a central hub 16 which is provided with a through bore to receive one end of the shaft 8 .
- the shaft 8 extends slightly from the nose of the compressor wheel 7 and is treaded to receive a flanged nut 17 which bears against the compressor wheel nose to clamp the compressor wheel 7 against a thrust bearing and oil seal assembly 18 .
- Details of the thrust bearing/oil seal assembly may vary and are not important to understanding of the compressor wheel mounting arrangement Essentially, the compressor wheel 7 is prevented from slipping on the shaft 8 by the clamping force applied by the nut 17 .
- FIG. 2 illustrates a compressor wheel assembly in accordance with the present invention. Details of the shaft 8 , thrust bearing and seal assembly 18 , and clap nut 17 may be entirely conventional, as for instance illustrated in FIG. 1.
- the bore through the compressor wheel is radially stepped so that it has two different diameter axial portions 21 and 22 .
- the fir axial portion 21 has a relatively small diameter corresponding to the outer diameter of the shaft 8 .
- the second axial portion 22 has an enlarged diameter so that its inner surface is radially spaced from the shaft 8 .
- the compressor wheel is thus supported on the shaft 8 along the length of the first portion 21 of the bore only.
- the enlarged portion of the bore 22 is formed in the nose region of the wheel where wheel stresses are lower and thus does not adversely effect operation of the wheel.
- a relatively small diameter bore of a diameter required to match the shaft 8 , is machined in to the compressor wheel to a maximum length which is shorter do the axial length of the wheel at its axis, but which can be readily machined with the required accuracy.
- the trough bore is then completed by machining the enlarged diameter second portion in the nose region of the wheel
- the enlarged diameter portion 22 of the bore may be machined before or after the small diameter portion 21 .
- a small diameter bore could be machined fight through the wheel and then enlarged over a portion of its length.
- a cylindrical sleeve may be fitted in to the relatively large diameter portion of the through bore, the sleeve having an inner diameter matching the diameter of the wheel to provide further support for the wheel on the shaft.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
- Compressor (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A compressor wheel assembly comprises a compressor wheel (7) mounted to a rotating shaft (8) which extends through a bore provided along the rotational axis of the wheel. The bore has a first axial portion (21) corresponding in diameter to the diameter of the shaft, and a second axial portion (22) of enlarged diameter, such that the inner surface of the second portion of the bore (22) is radially spaced from the shaft (8).
Description
- This invention relates to the assembly of a compressor wheel to a rotating shaft. In particular, the invention relates to the compressor wheel assembly of a turbocharger.
- Turbochargers are well known devices for supplying air to the intake of an internal combustion engine at pressures above atmospheric (boost pressures). A conventional turbocharger essentially comprises an exhaust gas driven turbine wheel mounted on a rotatable shaft within a turbine housing. Rotation of the turbine wheel rotates a compressor wheel mounted on the other end of the shaft within a compressor housing. The compressor wheel delivers compressed air to the intake manifold of the engine, thereby increasing engine power. The shaft is supported on journal and thrust bearings located within a central bearing housing connected between the turbine and compressor wheel housings.
- A conventional compressor wheel comprises an array of blades extending from a central hub provided with a bore for receiving one end of the turbocharger shaft The compressor wheel is secured to the shaft by a nut which threads onto the end of the shaft where it extends through the wheel bore, and bear against the nose end of the wheel to clamp the wheel against a shaft shoulder (or other radially extending abutment that rotates with the shaft).
- Modern demands on turbocharger performance require increased airflow from a turbocharger of a given size, leading to increased rotational speeds, for instance in excess of 100,000 rpm. To accommodate such high rotational speeds the turbocharger bearings, and thus the turbocharger shaft diameter, must be minimized. However, the use of a relatively small diameter shaft is problematical with the conventional compressor wheel mounting assembly. That is, it can be difficult to machine a sufficiently narrow bore through the compressor wheel to the required degree of accuracy (the bore must be concentric about the axis and rotation of the wheel if the wheel is to be rotationally balanced). As the diameter of the bore reduces there is a corresponding reduction in the size, and therefore strength. of the tool required to machine the bore. Even where the required accuracy is achievable, increased machining time and tool wear issues may prevent the process from being economically viable.
- The above problem is exacerbated as continued turbocharger development requires the use of higher performance materials, such as titanium, which are even harder to machine than the aluminium alloys conventionally used.
- One possible way of avoiding the above problem is to use a so-called ‘bore-less’ compressor wheel such as disclosed in U.S. Pat. No. 4,705,463. With this compressor wheel assembly only a relatively short threaded bore is provided in the compressor wheel to receive the threaded end of a shortened turbocharger shaft However, such assemblies can also experience balancing problems as the threaded connection between the compressor wheel and the shaft, and the clearance inherent in such a connection, may make it difficult to maintain the required degree of concentricity.
- It is an object of the present invention to obviate or mitigate the above problems.
- According to the present invention there is provided a compressor wheel assembly comprising a compressor wheel mounted to a rotating shaft the a extending through a bore provided along the rotational axis of the wheel, wherein the bore has a first axial portion corresponding in diameter to the diameter of the shaft, and a second axial portion of enlarged diameter, such that the inner surface of the second portion of the bore is radially spaced from the shaft.
- The wheel is supported on the shaft by the first axial portion of the bore only. This portion of the bore can be machined to the required diameter along the length of the wheel axis over which the requited degree of accuracy can be readily maintained. The remainder of the bore is simply enlarged so that it will not interfere with the concentric mounting of the wheel on the shaft.
- The invention also provides a turbocharger comprising a compressor wheel assembly as defined above.
- Other preferred features of the invention will become apparent from the description below.
- Specific embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
- FIG. 1 is an axial cross-section through a conventional turbocharger illustrating the major components of a turbocharger and a conventional compressor wheel assembly; and
- FIG. 2 is a cross-section through a compressor wheel assembly in accordance with the present invention.
- Referring first to FIG. 1, this illustrates the basic components of a conventional centripetal type turbocharger. The turbocharger comprises a
turbine 1 joined to acompressor 2 via a central bearing housing 3. Theturbine 1 comprises a turbine housing 4 which houses aturbine wheel 5. Similarly, thecompressor 2 comprises acompressor housing 6 which houses acompressor wheel 7. Theturbine wheel 5 andcompressor wheel 7 are mounted on opposite ends of acommon shaft 8 which is supported on bearing assemblies 9 within the bearing housing 3. - The turbine housing4 is provide with an
exhaust gas inlet 10 and anexhaust gas outlet 11. Theinlet 10 directs incoming exhaust gas to anannular inlet chamber 12 surrounding theturbine wheel 5. The exhaust gas flows through the turbine and into theoutlet 11 via a circular outlet opening which is co-axial with theturbine wheel 5. Rotation of theturbine wheel 5 rotates thecompressor wheel 7 which draws in air throughaxial inlet 13 and delivers compressed air to the engine intake via anannular outlet volute 14. - Referring in more detail to the compressor wheel assembly, the compressor wheel comprises a plurality of
blades 15 extending film acentral hub 16 which is provided with a through bore to receive one end of theshaft 8. Theshaft 8 extends slightly from the nose of thecompressor wheel 7 and is treaded to receive a flangednut 17 which bears against the compressor wheel nose to clamp thecompressor wheel 7 against a thrust bearing andoil seal assembly 18. Details of the thrust bearing/oil seal assembly may vary and are not important to understanding of the compressor wheel mounting arrangement Essentially, thecompressor wheel 7 is prevented from slipping on theshaft 8 by the clamping force applied by thenut 17. - Problems associated with the conventional compressor wheel assembly described above are discussed in the introduction to this specification
- FIG. 2 illustrates a compressor wheel assembly in accordance with the present invention. Details of the
shaft 8, thrust bearing andseal assembly 18, andclap nut 17 may be entirely conventional, as for instance illustrated in FIG. 1. - Where the present invention differs significantly from the prior art assembly of FIG. 1, is that the bore through the compressor wheel is radially stepped so that it has two different diameter
axial portions axial portion 21 has a relatively small diameter corresponding to the outer diameter of theshaft 8. However the secondaxial portion 22 has an enlarged diameter so that its inner surface is radially spaced from theshaft 8. The compressor wheel is thus supported on theshaft 8 along the length of thefirst portion 21 of the bore only. The enlarged portion of thebore 22, is formed in the nose region of the wheel where wheel stresses are lower and thus does not adversely effect operation of the wheel. - Thus, in accordance with the present invention a relatively small diameter bore, of a diameter required to match the
shaft 8, is machined in to the compressor wheel to a maximum length which is shorter do the axial length of the wheel at its axis, but which can be readily machined with the required accuracy. The trough bore is then completed by machining the enlarged diameter second portion in the nose region of the wheel Problems encountered in the prior art with attempts to machine a relatively small diameter bore through the full width of the compressor wheel are thus overcome. - It will be appreciated that the enlarged
diameter portion 22 of the bore may be machined before or after thesmall diameter portion 21. Similarly, a small diameter bore could be machined fight through the wheel and then enlarged over a portion of its length. - It will be appreciated that modifications may be made to the detail of the embodiment of the invention described above and illustrated in FIG. 2. For instance, the relative lengths of the first and second portions of the bore may differ from that illustrated. Also, the bore need not be abruptly stepped in diameter but could have a region of gradually increasing diameter between the first and second portions.
- As a further modification a cylindrical sleeve may be fitted in to the relatively large diameter portion of the through bore, the sleeve having an inner diameter matching the diameter of the wheel to provide further support for the wheel on the shaft.
- Other possible modifications will be readily apparent to the skilled person.
Claims (8)
1. A compressor wheel assembly comprising a compressor wheel mounted to a rotating shaft the shaft extending through a bore provided along the rotational axis of the wheel, wherein the bore has a first axial portion corresponding in diameter to the diameter of the shaft. and a second axial portion of enlarged diameter, such that the inner surface of the second portion of the bore is radially spaced from the shaft.
2. A compressor wheel assembly according to claim 1 , wherein an internal radial shoulder is defined between said first and second axial portions of the bore.
3. A compressor wheel assembly according to claim 1 , wherein there is a gradual increase in bore diameter between said first and second axial portions of the bore.
4. A compressor wheel assembly according to claim 1 , wherein said first axial portion of the bore extends from one axial end surface of the compressor wheel.
5. A compressor wheel assembly according to claim 1 , wherein a cylindrical sleeve is located around said shaft extending radially between the inner surface of the second portion of the bore and the outer surface of the shaft.
6. A compressor wheel for mounting to a rotating shaft of predetermined diameter, the compressor wheel being provided with an axial through bore for receiving an end of said shaft, wherein the through bore has a first axial portion corresponding in diameter to said predetermined diameter of the shaft, and a second axial portion of greater diameter than said predetermined diameter of the shaft
7. A compressor wheel according to claim 6 , wherein a cylindrical sleeve is fitted within the second portion of the bore, the sleeve having an internal diameter corresponding to the diameter of the first portion of the bore.
8. A turbocharger comprising a turbine wheel mounted to one end of a shaft for rotation within a turbine housing, and a compressor wheel mounted to the other end of the shaft for rotation within a compressor housing, the compressor wheel having an axial through bore extending between a first axial surface of the wheel and a second axial surface of the wheel, said second axial surface facing away from said turbine, wherein the bore has a first axial portion of internal diameter corresponding to the diameter of the shaft and a second axial portion of enlarged diameter, such that the inner surface of the enlarged diameter portion of the bore is radially spaced from the shaft, and wherein said first axial portion of the bore extends from said first axial end surface of the compressor wheel part way towards said second axial end surface of the wheel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0224726.0 | 2002-10-24 | ||
GBGB0224726.0A GB0224726D0 (en) | 2002-10-24 | 2002-10-24 | Compressor wheel assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040126251A1 true US20040126251A1 (en) | 2004-07-01 |
Family
ID=9946478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/691,093 Abandoned US20040126251A1 (en) | 2002-10-24 | 2003-10-22 | Compressor wheel assembly |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040126251A1 (en) |
EP (1) | EP1413764A3 (en) |
JP (1) | JP2004144096A (en) |
KR (1) | KR20040036657A (en) |
CN (1) | CN1499083A (en) |
GB (1) | GB0224726D0 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040115071A1 (en) * | 2002-10-24 | 2004-06-17 | Anthony Billington | Compressor wheel assembly |
US20040126231A1 (en) * | 2002-10-24 | 2004-07-01 | Anthony Billington | Compressor wheel assembly |
US20040131469A1 (en) * | 2002-10-24 | 2004-07-08 | Anthony Billington | Compressor wheel assembly |
US20070059188A1 (en) * | 2005-09-09 | 2007-03-15 | Borgwarner Inc. | Aerodynamically enhanced bearing housing pocket geometry |
US20070128044A1 (en) * | 2005-12-01 | 2007-06-07 | Fanuc Ltd | Fluid machine |
US20080080966A1 (en) * | 2006-09-29 | 2008-04-03 | Jtket Corporation | Turbocharger |
DE102010020213A1 (en) * | 2010-05-12 | 2011-11-17 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Charging device, in particular exhaust gas turbocharger for a motor vehicle |
US20190376524A1 (en) * | 2017-03-22 | 2019-12-12 | Ihi Corporation | Rotating body, turbocharger, and rotating body manufacturing method |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0425088D0 (en) | 2004-11-13 | 2004-12-15 | Holset Engineering Co | Compressor wheel |
ITMI20071100A1 (en) * | 2007-05-30 | 2008-11-30 | Nuovo Pignone Spa | ANCHORAGE SYSTEM FOR THE IMPELLERS OF A ROTARY FLUID MACHINE |
DE102010041981A1 (en) * | 2010-10-05 | 2012-04-05 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | loader |
KR101102567B1 (en) * | 2010-10-20 | 2012-01-04 | 케이넷(주) | Block for preventing influx of gas and water along microtube |
CN109612863A (en) * | 2018-12-12 | 2019-04-12 | 中国北方发动机研究所(天津) | A kind of pressure booster blower impeller wear test verifying device |
KR102419842B1 (en) | 2021-09-24 | 2022-07-12 | 주식회사 제이더블유테크 | Compressor wheel for turbocharger and manufacturing method thereof |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2377740A (en) * | 1944-03-31 | 1945-06-05 | Gen Electric | Centrifugal compressor |
US3200753A (en) * | 1963-02-07 | 1965-08-17 | Martin Marietta Corp | Turbo-boost pump |
US3601501A (en) * | 1970-02-26 | 1971-08-24 | John G Johnson | Gas compressor impeller and shaft assembly |
US3869777A (en) * | 1971-08-27 | 1975-03-11 | Alsthom Cgee | Component parts of welded rotors |
US4364717A (en) * | 1978-07-03 | 1982-12-21 | Barmag Barmer Maschinenfabrik Ag | Exhaust gas turbocharger |
US5163816A (en) * | 1991-07-12 | 1992-11-17 | General Motors Corporation | Wheel lock, centering and drive means and turbocharger impeller combination |
US5895204A (en) * | 1997-08-06 | 1999-04-20 | Carrier Corporation | Drive positioning mechanism for a variable pipe diffuser |
US6017184A (en) * | 1997-08-06 | 2000-01-25 | Allied Signal Inc. | Turbocharger integrated bearing system |
US20040115071A1 (en) * | 2002-10-24 | 2004-06-17 | Anthony Billington | Compressor wheel assembly |
US20040126231A1 (en) * | 2002-10-24 | 2004-07-01 | Anthony Billington | Compressor wheel assembly |
US20040131469A1 (en) * | 2002-10-24 | 2004-07-08 | Anthony Billington | Compressor wheel assembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2860827A (en) * | 1953-06-08 | 1958-11-18 | Garrett Corp | Turbosupercharger |
DE3268013D1 (en) * | 1981-08-18 | 1986-01-30 | Bbc Brown Boveri & Cie | Exhaust-gas turbocharger with bearings between turbine and compressor |
JP3777648B2 (en) * | 1996-04-03 | 2006-05-24 | 石川島播磨重工業株式会社 | Impeller fastening structure |
DE19736333C1 (en) * | 1997-08-21 | 1999-03-04 | Man B & W Diesel Ag | Mounting for turbine wheel for fluid pump |
-
2002
- 2002-10-24 GB GBGB0224726.0A patent/GB0224726D0/en not_active Ceased
-
2003
- 2003-10-20 EP EP03256586A patent/EP1413764A3/en not_active Withdrawn
- 2003-10-22 US US10/691,093 patent/US20040126251A1/en not_active Abandoned
- 2003-10-24 JP JP2003364667A patent/JP2004144096A/en active Pending
- 2003-10-24 CN CNA2003101198134A patent/CN1499083A/en active Pending
- 2003-10-24 KR KR1020030074547A patent/KR20040036657A/en not_active Application Discontinuation
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2377740A (en) * | 1944-03-31 | 1945-06-05 | Gen Electric | Centrifugal compressor |
US3200753A (en) * | 1963-02-07 | 1965-08-17 | Martin Marietta Corp | Turbo-boost pump |
US3601501A (en) * | 1970-02-26 | 1971-08-24 | John G Johnson | Gas compressor impeller and shaft assembly |
US3869777A (en) * | 1971-08-27 | 1975-03-11 | Alsthom Cgee | Component parts of welded rotors |
US4364717A (en) * | 1978-07-03 | 1982-12-21 | Barmag Barmer Maschinenfabrik Ag | Exhaust gas turbocharger |
US5163816A (en) * | 1991-07-12 | 1992-11-17 | General Motors Corporation | Wheel lock, centering and drive means and turbocharger impeller combination |
US5895204A (en) * | 1997-08-06 | 1999-04-20 | Carrier Corporation | Drive positioning mechanism for a variable pipe diffuser |
US6017184A (en) * | 1997-08-06 | 2000-01-25 | Allied Signal Inc. | Turbocharger integrated bearing system |
US20040115071A1 (en) * | 2002-10-24 | 2004-06-17 | Anthony Billington | Compressor wheel assembly |
US20040126231A1 (en) * | 2002-10-24 | 2004-07-01 | Anthony Billington | Compressor wheel assembly |
US20040131469A1 (en) * | 2002-10-24 | 2004-07-08 | Anthony Billington | Compressor wheel assembly |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040115071A1 (en) * | 2002-10-24 | 2004-06-17 | Anthony Billington | Compressor wheel assembly |
US20040126231A1 (en) * | 2002-10-24 | 2004-07-01 | Anthony Billington | Compressor wheel assembly |
US20040131469A1 (en) * | 2002-10-24 | 2004-07-08 | Anthony Billington | Compressor wheel assembly |
US7008191B2 (en) | 2002-10-24 | 2006-03-07 | Holset Engineering Company, Limited | Compressor wheel assembly |
US7010917B2 (en) | 2002-10-24 | 2006-03-14 | Holset Engineering Company, Limited | Compressor wheel assembly |
US20070059188A1 (en) * | 2005-09-09 | 2007-03-15 | Borgwarner Inc. | Aerodynamically enhanced bearing housing pocket geometry |
US20070128044A1 (en) * | 2005-12-01 | 2007-06-07 | Fanuc Ltd | Fluid machine |
US20080080966A1 (en) * | 2006-09-29 | 2008-04-03 | Jtket Corporation | Turbocharger |
US8308431B2 (en) * | 2006-09-29 | 2012-11-13 | Jtekt Corporation | Turbocharger |
DE102010020213A1 (en) * | 2010-05-12 | 2011-11-17 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Charging device, in particular exhaust gas turbocharger for a motor vehicle |
US20190376524A1 (en) * | 2017-03-22 | 2019-12-12 | Ihi Corporation | Rotating body, turbocharger, and rotating body manufacturing method |
US11530706B2 (en) * | 2017-03-22 | 2022-12-20 | Ihi Corporation | Rotating body, turbocharger, and rotating body manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
EP1413764A3 (en) | 2005-04-13 |
EP1413764A2 (en) | 2004-04-28 |
JP2004144096A (en) | 2004-05-20 |
KR20040036657A (en) | 2004-04-30 |
CN1499083A (en) | 2004-05-26 |
GB0224726D0 (en) | 2002-12-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4986733A (en) | Turbocharger compressor wheel assembly with boreless hub compressor wheel | |
US20040126231A1 (en) | Compressor wheel assembly | |
US4850802A (en) | Composite compressor wheel for turbochargers | |
EP1681473B1 (en) | Compressor wheel | |
US4705463A (en) | Compressor wheel assembly for turbochargers | |
US7878758B2 (en) | Turbocharger with balancing features | |
US7008191B2 (en) | Compressor wheel assembly | |
US5193989A (en) | Compressor wheel and shaft assembly for turbocharger | |
US5176497A (en) | Boreless hub compressor wheel assembly for a turbocharger | |
US20040126251A1 (en) | Compressor wheel assembly | |
CN101709667A (en) | Turbomachine | |
US7010917B2 (en) | Compressor wheel assembly | |
EP3910165A1 (en) | Turbomachine with rotating group having a fastener arrangement | |
EP0129311B1 (en) | Compressor wheel assembly | |
US11732607B2 (en) | Bearing structure, turbocharger having the same, and assembly method of turbocharger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HOLSET ENGINEERING COMPANY, LIMITED, UNITED KINGDO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BILLINGTON, ANTHONY;REEL/FRAME:014951/0611 Effective date: 20031118 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |