Abstract: A bearing assembly for a charging apparatus. The bearing assembly comprises a bearing housing and a shaft. The bearing assembly further comprises a compressor-side bearing bushing and a turbine-side bearing bushing which together support the shaft inside a bearing bore of the bearing housing. The bearing assembly is configured to supply unequal amounts of lubricant to a compressor-side outer lubrication gap of the compressor-side bearing bushing and to a turbine-side outer lubrication gap of the turbine-side bearing bushing. The bearing assembly is further configured to supply unequal amounts of lubricant to a compressor-side inner lubrication gap of the compressor-side bearing bushing and to a turbine-side inner lubrication gap of the turbine-side bearing bushing.

Abstract: A bearing assembly for a charging apparatus. The bearing assembly comprises a bearing housing and a shaft. The bearing assembly further comprises a compressor-side bearing bushing and a turbine-side bearing bushing which together support the shaft inside a bearing bore of the bearing housing. The compressor-side bearing bushing is configured differently than the turbine-side bearing bushing.

Abstract: A bearing assembly for a charging apparatus. The bearing assembly comprises a bearing housing and a shaft. The bearing assembly further comprises a compressor-side bearing bushing and a turbine-side bearing bushing which together support the shaft inside a bearing bore of the bearing housing. The compressor-side bearing bushing is configured differently than the turbine-side bearing bushing.

Abstract: A bearing assembly for a charging apparatus. The bearing assembly comprises a bearing housing and a shaft. The bearing assembly further comprises a compressor-side bearing bushing and a turbine-side bearing bushing which together support the shaft inside a bearing bore of the bearing housing. The bearing assembly is configured to supply unequal amounts of lubricant to a compressor-side outer lubrication gap of the compressor-side bearing bushing and to a turbine-side outer lubrication gap of the turbine-side bearing bushing. The bearing assembly is further configured to supply unequal amounts of lubricant to a compressor-side inner lubrication gap of the compressor-side bearing bushing and to a turbine-side inner lubrication gap of the turbine-side bearing bushing.

Abstract: An acoustic measuring device (1) for an exhaust turbocharger, with a compressor housing (2) which comprises a compressor housing inlet (3), a compressor impeller (4), a compressor spiral (5) and a compressor housing outlet (6); with a rotation speed sensor (7) arranged in the compressor spiral (5); with a measurement tube (8) which is connected to the compressor housing outlet (6) and has at least one dynamic pressure sensor (9, 10); with a flexible intermediate pipe (11) which is connected to the measurement tube (8) downstream viewed in the flow direction (R) of the air (L) emerging from the compressor housing outlet (6); with a silencer (12) which is connected to the intermediate pipe (11) downstream; and with a Laval nozzle (13) which is connected to the silencer (12) viewed in the flow direction (R).

Abstract: An exhaust-gas turbocharger (1) having a turbine housing (2), which has a bypass duct (10) with a bypass opening (9); and having a control flap (3), which is mounted pivotably between a closed position and an open position in the turbine housing (2), the control flap (3), when in its closed position, resting on a bearing region (8) of a housing wall (11) which conducts exhaust gas and contains the bypass opening (9), wherein at least one flow imperfection (12A, 12B; 23A, 23B) is arranged in the turbine housing wall (11) in the bearing region (8) of the control flap (3) and/or in the control flap (3).

Abstract: An acoustic measuring device (1) for an exhaust turbocharger, with a compressor housing (2) which comprises a compressor housing inlet (3), a compressor impeller (4), a compressor spiral (5) and a compressor housing outlet (6); with a rotation speed sensor (7) arranged in the compressor spiral (5); with a measurement tube (8) which is connected to the compressor housing outlet (6) and has at least one dynamic pressure sensor (9, 10); with a flexible intermediate pipe (11) which is connected to the measurement tube (8) downstream viewed in the flow direction (R) of the air (L) emerging from the compressor housing outlet (6); with a silencer (12) which is connected to the intermediate pipe (11) downstream; and with a Laval nozzle (13) which is connected to the silencer (12) viewed in the flow direction (R).

Abstract: An exhaust-gas turbocharger (1) having a turbine housing (2), which has a bypass duct (10) with a bypass opening (9); and having a control flap (3), which is mounted pivotably between a closed position and an open position in the turbine housing (2), the control flap (3), when in its closed position, resting on a bearing region (8) of a housing wall (11) which conducts exhaust gas and contains the bypass opening (9), wherein at least one flow imperfection (12A, 12B; 23A, 23B) is arranged in the turbine housing wall (11) in the bearing region (8) of the control flap (3) and/or in the control flap (3).