Exhaust-gas turbocharger
AssigneeBorgWarner Inc.
InventorsRobert Lingenauber, Frank Scherrer, Josef-Hans Hemer, Michael Fischer
Life of this patent
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Abstract
An exhaust-gas turbocharger (1) having a compressor housing (2); a turbine housing (3); and a bearing housing (4) which has a compressor-side flange (5) and which has a turbine-housing-side flange (6). The turbine-housing-side flange (6) is produced from a material which corresponds in terms of its mechanical and thermal properties to the material of the turbine housing (2).
Claims7
An exhaust-gas turbocharger (1) having
- a compressor housing (2);
- a turbine housing (3) having a bearing-housing-side flange having a planar contact surface;
- and
- a bearing housing (4)
- which has a compressor-side flange (5) and
- which has a turbine-housing-side flange (6) as a separately produced component which is connected to the bearing housing (4) and has a planar contact surface adapted to mating to the planar contact surface of the turbine housing (3) bearing-housing-side flange,
- wherein
- the turbine housing is formed of a material adapted to withstand exhaust-gas temperatures and thermal variations,
- the turbine-housing-side flange (6) of the bearing housing (4) is produced from steel and the remainder of the bearing housing (4) is produced from iron.
A bearing housing (4) for an exhaust-gas turbocharger (1), having a compressor-housing-side flange (5) and a turbine-housing-side flange (6), wherein the bearing housing other than the turbine-housing-side flange (6) is a cast part composed of a pearlitic microstructure, and wherein the turbine-housing-side flange (6) is a separately produced component which is connected to the bearing housing (4) and is produced from a high-temperature-resistant ferritic or from an austenitic cast steel.
Dependencies are inferred from the claim text.