An exhaust-gas turbocharger (1) having a turbine (2), which has a turbine wheel (3) surrounded by an intake duct (4), and having a VTG cartridge (5), which has a disk (6) and a vane bearing ring (7), which delimit the intake duct (4), and which has a plurality of vanes (8), which are arranged in the
An exhaust-gas turbocharger (1) having a turbine (2), which has a turbine wheel (3) surrounded by an intake duct (4), and having a VTG cartridge (5), which has a disk (6) and a vane bearing ring (7), which delimit the intake duct (4), and which has a plurality of vanes (8), which are arranged in the intake duct (4) and are mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which are connected to vane levers (10), the lever heads (11) of which engage into associated grooves (12) in a unison ring (13), which surrounds the vane bearing ring (7) on the outside, and which has an adjusting lever (14) which is operatively connected to an adjusting shaft (15) in order to transmit an adjusting torque to the unison ring (13). The adjusting lever (14) is of planar configuration.
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1. An exhaust-gas turbocharger (1) having a turbine (2), which has a turbine wheel (3) surrounded by an intake duct (4), anda VTG cartridge (5), which has a disk (6) and a vane bearing ring (7), which delimit the intake duct (4),which has a plurality of vanes (8), which are arranged in the intake du
1. An exhaust-gas turbocharger (1) having a turbine (2), which has a turbine wheel (3) surrounded by an intake duct (4), anda VTG cartridge (5), which has a disk (6) and a vane bearing ring (7), which delimit the intake duct (4),which has a plurality of vanes (8), which are arranged in the intake duct (4) and mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which are connected to vane levers (10), the vane levers having a cranked configuration, the lever heads (11) having a circular circumference which engages into associated grooves (12) in a unison ring (13), which surrounds the vane bearing ring (7) on the outside, the grooves (12) arranged in a plane that is offset with respect to a bearing plane of the vane levers (10) on the vane bearing ring (7), the lever heads (11) of the vane levers (10) forming a radial bearing which supports the unison ring (13), andwhich has an adjusting lever (14) which is operatively connected to an adjusting shaft (15) in order to transmit an adjusting torque to the unison ring (13), whereinthe adjusting lever (14) is of planar configuration. 2. The exhaust-gas turbocharger as claimed in claim 1, wherein the adjusting lever (14), in a first end region (14A) adjacent to the unison ring (13), has a groove (16) which engages around a positioning pin (17) that is fixed on the unison ring (13). 3. The exhaust-gas turbocharger as claimed in claim 2, wherein the groove (16) is open on one side. 4. The exhaust-gas turbocharger as claimed in claim 1, wherein the adjusting lever (14) has a second end region (14B) which is adjacent to the vane bearing ring (7) and is provided with a recess (17) in which the adjusting shaft (15) is fixed. 5. The exhaust-gas turbocharger as claimed in claim 2, wherein the positioning pin (17) is welded to the unison ring (13). 6. A VTG cartridge (5) of an exhaust-gas turbocharger (1), having a disk (6) and a vane bearing ring (7), which delimit an intake duct (4),a plurality of vanes (8), which are arranged in the intake duct (4) and mounted in the vane bearing ring (7) by way of rotatable vane shafts (9), which are connected to vane levers (10), the vane levers having a cranked configuration, the lever heads (11) having a circular circumference which engages into associated grooves (12) in a unison ring (13), which surrounds the vane bearing ring (7) on the outside, the grooves (12) arranged in a plane that is offset with respect to a bearing plane of the vane levers (10) on the vane bearing ring (7), the lever heads (11) of the vane levers (10) forming a radial bearing which supports the unison ring (13), andan adjusting lever (14) which is operatively connected to an adjusting shaft (15) in order to transmit an adjusting torque to the unison ring (13), wherein the adjusting lever (14) is of planar configuration. 7. The VTG cartridge as claimed in claim 6, wherein the adjusting lever (14), in a first end region (14A) adjacent to the unison ring (13), has a groove (16) which engages around a positioning pin (17) that is fixed on the unison ring (13). 8. The VTG cartridge as claimed in claim 7, wherein the groove (16) is open on one side. 9. The VTG cartridge as claimed in claim 7, wherein the positioning pin (17) is welded to the unison ring (13). 10. The VTG cartridge as claimed in claim 6, wherein the adjusting lever (14) has a second end region (14B) which is adjacent to the vane bearing ring (7) and is provided with a recess (17) in which the adjusting shaft (15) is fixed.
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Scholz,Georg; Jennes,Joerg, Guiding grid of variable geometry.
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