VARIABLE TURBINE GEOMETRY TURBOCHARGER VANE PACK RETAINER

摘要

A variable turbine geometry turbine turbocharger (1) includes a vane pack (50) disposed in the exhaust gas path upstream of the turbine wheel (12). The vane pack (50) includes vanes (30) that are rotatably supported between a pair of vane rings (34) and configured to adjustably control the flow of exhaust gas to the turbine wheel (12). In addition, a retainer (60, 160) secures the vane pack (50) to the bearing housing (16) in such a way that the vane pack (50) is mechanically decoupled from the turbine housing (4).

主权项

1. A variable turbine geometry turbine turbocharger (1) comprising:
a bearing housing (16) including an axially extending bore (17); a rotating assembly including a shaft (14) rotatably supported in the bore (17), a compressor wheel (28) secured to one end of the shaft (14) and a turbine wheel (12) secured to another end of the shaft (14); a turbine housing (4) including an exhaust gas inlet (6), an exhaust gas outlet (8), a volute (10) disposed in a fluid path between the exhaust gas inlet (6) and the exhaust gas outlet (8), the turbine wheel (12) disposed in the turbine housing (4) between the volute (10) and the exhaust gas outlet (8); a vane pack (50) disposed in the fluid path between the volute and the turbine wheel (12), the vane pack (50) comprising vanes (30) rotatably supported between a pair of vane rings (34, 38) and configured to adjustably control the flow of exhaust gas to the turbine wheel (12), and a retainer (60, 160) configured to secure the vane pack (50) to the bearing housing (16) in such a way that the vane pack (50) is mechanically decoupled from the turbine housing (4).