IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0440797
(2007-09-27)
|
등록번호 |
US-8348595
(2013-01-08)
|
국제출원번호 |
PCT/US2007/079693
(2007-09-27)
|
§371/§102 date |
20100205
(20100205)
|
국제공개번호 |
WO2008/042698
(2008-04-10)
|
발명자
/ 주소 |
- Koch, Silvio
- Panek, Edward R.
- Takabatake, Lauro
- Ward, Daniel
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
20 인용 특허 :
7 |
초록
▼
A turbocharger oil discharge assembly (301, 501, 701, 901) can have a thrust collar (324, 524, 724, 924) with a first radially outwardly extending wall and a second radially outwardly extending wall to define a first annular channel. The first radially outwardly extending wall can have an annular fl
A turbocharger oil discharge assembly (301, 501, 701, 901) can have a thrust collar (324, 524, 724, 924) with a first radially outwardly extending wall and a second radially outwardly extending wall to define a first annular channel. The first radially outwardly extending wall can have an annular flange that at least in part defines a second annular channel. The assembly can also have a thrust bearing (340, 540, 740, 940) having a radially inner end received in the first annular channel, and an insert (400, 600, 800, 1000). An oil collection chamber (440, 640, 840, 1040) can be defined at least in part by a drainage channel of the insert (400, 600, 800, 1000), the annular flange of the thrust collar (324, 524, 724, 924) and the thrust bearing (340, 540, 740, 940). Pressurized oil discharged from an oil release interface can be directed towards a radially outer region of the oil collection chamber (440, 640, 840, 1040) and can be collected in the oil collection chamber (440, 640, 840, 1040) for subsequent exhaust.
대표청구항
▼
1. An oil discharge assembly (301, 501, 701, 901) for a turbocharger (300, 500, 700, 900) comprising: a thrust collar (324, 524, 724, 924) being generally cylindrical and having a first radially outwardly extending wall and a second radially outwardly extending wall, the first and second radially ou
1. An oil discharge assembly (301, 501, 701, 901) for a turbocharger (300, 500, 700, 900) comprising: a thrust collar (324, 524, 724, 924) being generally cylindrical and having a first radially outwardly extending wall and a second radially outwardly extending wall, the first and second radially outwardly extending walls being axially spaced such that a first annular channel is defined therebetween, the first radially outwardly extending wall having an annular flange that at least in part defines a second annular channel;a thrust bearing (340, 540, 740, 940) having a radially inner end received in the first annular channel; andan insert (400, 600, 800, 1000) having an inner axially extending lip with a distal end,wherein the distal end is received in the second annular channel, the inner axially extending lip defining an annular drainage channel, the insert (400, 600, 800, 1000) annularly surrounding a portion of the thrust collar (324, 524, 724, 924), the annular drainage channel being radially inward of a radially outermost portion of the second annular channel,wherein an oil collection chamber (440, 640, 840, 1040) is defined at least in part by the drainage channel of the insert (400, 600, 800, 1000), the annular flange of the thrust collar (324, 524, 724, 924) and the thrust bearing (340, 540, 740, 940), and wherein the oil collection chamber (440, 640, 840, 1040) is in fluid communication with an oil release interface between the thrust collar (324, 524, 724, 924) and the thrust bearing (340, 540, 740, 940),whereby pressurized oil discharged from the oil release interface is directed towards a radially outer region of the oil collection chamber (440, 640, 840, 1040) and is collected in the oil collection chamber (440, 640, 840, 1040) for subsequent exhaust. 2. The assembly (301, 501, 701, 901) of claim 1, wherein the first annular channel opens in a radial direction and wherein the second annular channel opens in an axial direction. 3. The assembly (301, 501, 701, 901) of claim 1, wherein the thrust collar (324, 524, 724, 924) has a labyrinth seal and wherein the second annular channel opens in a direction orthogonal to a direction of opening of the labyrinth seal. 4. The assembly (301, 501, 701, 901) of claim 1, wherein the second annular channel has at least two adjacent walls that are non-orthogonal to each other. 5. The assembly (301, 501, 701, 901) of claim 1, wherein the annular flange is along a distal end of the first radially outwardly extending wall. 6. The assembly (301, 501, 701, 901) of claim 1, wherein the first radially outwardly extending wall has an oil deflector extending in a direction toward the thrust bearing (340, 540, 740, 940). 7. The assembly (301, 501, 701, 901) of claim 1, wherein the thrust bearing (340, 540, 740, 940) has a thrust bearing (340, 540, 740, 940) channel formed therein and wherein at least a portion of the oil deflector is received in the thrust bearing (340, 540, 740, 940) channel. 8. The assembly (301, 501, 701, 901) of claim 7, wherein the oil deflector engages at least two surfaces of the thrust bearing (340, 540, 740, 940) channel. 9. The assembly (301, 501, 701, 901) of claim 1, wherein the insert (400, 600, 800, 1000) has an outer axially extending lip that engages a bearing housing of the turbocharger (300, 500, 700, 900). 10. The assembly (301, 501, 701, 901) of claim 1, wherein the insert (400, 600, 800, 1000) has an outer axially extending lip that engages the thrust bearing (340, 540, 740, 940). 11. The assembly (301, 501, 701, 901) of claim 1, wherein the oil collection chamber (440, 640, 840, 1040) has a wall with a serpentine shape. 12. The assembly (301, 501, 701, 901) of claim 1, wherein the oil collection chamber (440, 640, 840, 1040) has a wall along a radial axis. 13. An oil discharge assembly (301, 501, 701, 901) for a turbocharger (300, 500, 700, 900) comprising: a thrust collar (324, 524, 724, 924) being generally cylindrical and having a first radially outwardly extending wall and a second radially outwardly extending wall, the first and second radially outwardly extending walls being axially spaced such that a first annular channel is defined therebetween, the first radially outwardly extending wall having a distal end;a thrust bearing (340, 540, 740, 940) having a radially inner end received in the first annular channel; andan insert (400, 600, 800, 1000) having an inner axially extending lip with a lip distal end,wherein the lip distal end has a cut-out and the distal end of the first radially outwardly extending wall is received in the cut-out, the inner axially extending lip defining an annular drainage channel, the insert (400, 600, 800, 1000) annularly surrounding a portion of the thrust collar (324, 524, 724, 924), the inner axially extending lip extending only partially along the thrust collar (324, 524, 724, 924) to define a gap between the inner axially extending lip and the thrust bearing (340, 540, 740, 940),wherein an oil collection chamber (440, 640, 840, 1040) is defined at least in part by the drainage channel of the insert (400, 600, 800, 1000), the inner axially extending lip and the thrust bearing (340, 540, 740, 940), wherein the oil collection chamber (440, 640, 840, 1040) is in fluid communication with an oil release interface between the thrust collar (324, 524, 724, 924) and the thrust bearing (340, 540, 740, 940), the oil release interface being in fluid communication with the gap,whereby pressurized oil discharged from the oil release interface is centrifugally propelled towards a radially outer region of the oil collection chamber (440, 640, 840, 1040) and is collected in the oil collection chamber (440, 640, 840, 1040) for subsequent exhaust. 14. The assembly (301, 501, 701, 901) of claim 13, wherein the thrust collar (324, 524, 724, 924) has a labyrinth seal. 15. The assembly (301, 501, 701, 901) of claim 13, wherein the insert (400, 600, 800, 1000) has an outer axially extending lip that engages a bearing housing of the turbocharger (300, 500, 700, 900). 16. The assembly (301, 501, 701, 901) of claim 13, wherein the insert (400, 600, 800, 1000) has an outer axially extending lip that engages the thrust bearing (340, 540, 740, 940). 17. A method of sealing a compressor housing from a bearing housing in a turbocharger (300, 500, 700, 900), the method comprising: providing an oil collection chamber (440, 640, 840, 1040) in fluid communication with an outlet and in fluid communication with an oil release interface between a thrust collar (324, 524, 724, 924) and a thrust bearing (340, 540, 740, 940);partially surrounding the thrust collar (324, 524, 724, 924) with an insert (400, 600, 800, 1000) to define a seal face therebetween;defining an annular drainage channel in the oil collection chamber (440, 640, 840, 1040), the annular drainage channel being radially inward of the radially outermost portion of the seal face;discharging pressurized oil from the oil release interface via centrifugal force towards a radially outer region of the oil collection chamber (440, 640, 840, 1040); andexhausting the oil through the outlet of the oil collection chamber (440, 640, 840, 1040). 18. The method of claim 17, further comprising engaging the insert (400, 600, 800, 1000) with at least one of the bearing housing or the thrust bearing (340, 540, 740, 940). 19. The method of claim 17, further comprising engaging an oil deflector with the thrust bearing (340, 540, 740, 940) to restrict flow of oil from the oil release interface to the oil collection chamber (440, 640, 840, 1040). 20. The method of claim 17, further comprising forming an annular channel along the thrust collar (324, 524, 724, 924) that is orthogonal to a labyrinth seal of the thrust collar (324, 524, 724, 924).
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