A tilting pad (80, 180) (TP) journal bearing (30, 32, 132) is used to support a rotating assembly of a turbocharger (10). The TP journal bearing (30, 32, 132) includes a cylindrical outer ring (60, 160) and tilting pads (80, 180) disposed within the outer ring (60, 160). The tilting pads (80, 180) a
A tilting pad (80, 180) (TP) journal bearing (30, 32, 132) is used to support a rotating assembly of a turbocharger (10). The TP journal bearing (30, 32, 132) includes a cylindrical outer ring (60, 160) and tilting pads (80, 180) disposed within the outer ring (60, 160). The tilting pads (80, 180) are formed separately from the outer ring (60, 160) and secured thereto during assembly.
대표청구항▼
1. A journal bearing (30, 32, 132) comprising a cylindrical outer ring (60, 160) that includes a first end (61),a second end (62),a longitudinal axis (63) that extends through the first end (61) and the second end (62),a radially outward-facing bearing surface (66), andan inner surface (68) opposed
1. A journal bearing (30, 32, 132) comprising a cylindrical outer ring (60, 160) that includes a first end (61),a second end (62),a longitudinal axis (63) that extends through the first end (61) and the second end (62),a radially outward-facing bearing surface (66), andan inner surface (68) opposed to the radially outward-facing bearing surface (66),the inner surface (68) including an axially extending groove (72, 172), anda tilting pad (80, 180) that includes a bearing member (81) that is elongated in a circumferential direction and provides a radially inward facing bearing surface (82),an anchor portion (90, 190),a web (88) that connects the bearing member (81) to the anchor portion (90, 190), wherein the anchor portion (90, 190) is disposed in the groove (72, 172) in such a way that the tilting pad (80, 180) is secured to the outer ring (60, 160), and the bearing member (81) is pivotable about the web (88) relative to the inner surface (68) of the outer ring (60, 160),wherein the groove (72) is blind relative to the outer ring first end (61) and the outer ring second end (62). 2. The journal bearing (30, 32) of claim 1, wherein the anchor portion (90) is press fit within the groove (72). 3. The journal bearing (30, 32) of claim 1, wherein the anchor portion (90) has a pentagonal profile, and the groove (72) has a curved profile. 4. The journal bearing (30, 32, 132) of claim 1, wherein the web (88) is disposed closer to a trailing end (85) of the bearing member (81) than to a leading end (84) of the bearing member (81) relative to a direction of rotation of the shaft (24). 5. The journal bearing (132) of claim 1, further comprising a retaining ring (120a) disposed within the outer ring (160), the retaining ring (120a) configured to retain the tilting pad (180) within the outer ring (160). 6. The journal bearing (132) of claim 5, wherein the retaining ring (120a) is press fit within the outer ring (160). 7. The journal bearing (132) of claim 1, further comprising a retaining ring (120a) disposed within the outer ring (160), the retaining ring (120a) configured to urge the anchor portion (190) radially outward and into the groove (172). 8. The journal bearing (132) of claim 1, further comprising a retaining ring (120a) disposed within the outer ring (160), the retaining ring (120a) configured to control the flow of lubricating oil within the journal bearing (132). 9. The journal bearing (132) of claim 1, further comprising a first retaining ring (120a) disposed within the outer ring (160) on a first end (61) of the flexure pivot tilting pad (180) and a second retaining ring (120b) disposed within the outer ring (160) on a second end (62) of the tilting pad (180). 10. A journal bearing (132) comprising a cylindrical outer ring (160),tilting pads (180) disposed within the outer ring (160),a first retaining ring (120a) disposed within the outer ring (160) on a first axial side of the tilting pads (180), anda second retaining ring (120b) disposed within the outer ring (160) on a second axial side of the tilting pad (180),wherein the first retaining ring (120a) and the second retaining ring (120b) are configured to secure the tilting pads (180) within the outer ring (160) and wherein the first retaining ring (120a), the second retaining ring (120b), or both the first retaining ring (120a) and the second retaining ring (120b) are configured to control the flow of lubricating oil within the journal bearing (132). 11. A turbocharger (10) comprising a turbine wheel (14),a compressor impeller (18), anda shaft (24) that connects the turbine wheel (14) to the compressor impeller (18),the shaft (24) supported for rotation within a bearing housing (22) via a journal bearing (30, 32, 132), the journal bearing (30, 32, 132) comprising a cylindrical outer ring (60, 160) that includes a first end (61),a second end (62),a longitudinal axis (63) that extends through the first end (61) and the second end (62),a radially outward-facing bearing surface (66), andan inner surface (68) opposed to the radially outward-facing bearing surface (66),the inner surface (68) including an axially extending groove (72, 172), anda tilting pad (80, 180) that includes a bearing member (81) that is elongated in a circumferential direction and provides a radially inward facing bearing surface (82),an anchor portion (90, 190),a web (88) that connects the bearing member (81) to the anchor portion (90, 190),wherein the anchor portion (90, 190) is disposed in the groove (72, 172) in such a way that the tilting pad (80, 180) is secured to the outer ring (60, 160), and the bearing member (81) is pivotable about the web (88) relative to the inner surface (68) of the outer ring (60, 160), andwherein the axially extending groove (72) is blind relative to the outer ring first end (61) and the outer ring second end (62). 12. The turbocharger (10) of claim 11, wherein the anchor portion (90) is press fit within the groove (72). 13. The turbocharger (10) of claim 11, further comprising a retaining ring (120a) disposed within the outer ring (160), the retaining ring (120a) configured to urge the anchor portion (190) radially outward and into the groove (172). 14. The turbocharger (10) of claim 11, further comprising a first retaining ring (120a) disposed within the outer ring (160) on a first axial side of the tilting pad (180) and a second retaining pad (120b) disposed within the outer ring (160) on a second axial side of the tilting pad (180).
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Perez, Robert X.; Ibanez, Natividad S., Hydrodynamic bearings having strain sensors.
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