Method for manufacturing a turbocharger with variable turbine geometry
First Claim
1. A method for manufacturing a turbocharger (1) with variable turbine geometry (VTG), the method comprising:
- manufacturing the turbocharger comprising;
a turbine housing (2) with a feed duct (9) for exhaust gases;
a turbine rotor (4) rotatably mounted in the turbine housing (2); and
a guide grate (18) which radially surrounds the turbine rotor (4), the guide grate comprising;
a blade bearing ring (6), a multiplicity of guide blades (7) each having a blade shaft (8) mounted in the blade bearing ring (6), an adjusting ring (5) operatively connected to the guide blades (7) via associated blade levers (20) fastened to the blade shafts (8) at one of the ends thereof, each blade lever (20) having at the other end a lever head (23) which can be placed in engagement with an associated engagement recess (24) of the adjusting ring (5), and a stop (25) for setting a minimum throughflow through nozzle cross sections formed by the guide blades (7),wherein the stop (25) is a setting pin which is fastened by means of an automated butt welding process, a position of the setting pin being determined from iterative throughflow measurements.
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Accused Products
Abstract
A method for manufacturing a turbocharger (1) with variable turbine geometry (VTG), having a turbine housing (2) with a feed duct (9) for exhaust gases; a turbine rotor (4) which is rotatably mounted in the turbine housing (2); and a guide grate (18) which surrounds the turbine rotor (4) radially at the outside, which has a blade bearing ring (6), which has a multiplicity of guide blades (7) which have in each case one blade shaft (8) mounted in the blade bearing ring (6), which has an adjusting ring (5) operatively connected to the guide blades (7) via associated blade levers (20) fastened to the blade shafts (8) at one of the ends thereof, each blade lever (20) having at the other end a lever head (23) which can be placed in engagement with an associated engagement recess (24) of the adjusting ring (5), and which has a stop (25) at least for setting the minimum throughflow through the nozzle cross sections formed by the guide blades (7). The stop (25) is formed as a setting pin which is fastened by means of an automated butt welding process, the position of the setting pin being determined from a previously carried out throughflow measurement with similar guide grates.
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Citations
15 Claims
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1. A method for manufacturing a turbocharger (1) with variable turbine geometry (VTG), the method comprising:
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manufacturing the turbocharger comprising;
a turbine housing (2) with a feed duct (9) for exhaust gases;a turbine rotor (4) rotatably mounted in the turbine housing (2); and
a guide grate (18) which radially surrounds the turbine rotor (4), the guide grate comprising;
a blade bearing ring (6), a multiplicity of guide blades (7) each having a blade shaft (8) mounted in the blade bearing ring (6), an adjusting ring (5) operatively connected to the guide blades (7) via associated blade levers (20) fastened to the blade shafts (8) at one of the ends thereof, each blade lever (20) having at the other end a lever head (23) which can be placed in engagement with an associated engagement recess (24) of the adjusting ring (5), and a stop (25) for setting a minimum throughflow through nozzle cross sections formed by the guide blades (7),wherein the stop (25) is a setting pin which is fastened by means of an automated butt welding process, a position of the setting pin being determined from iterative throughflow measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for manufacturing a guide grate (18) for a turbocharger (1) with variable turbine geometry (VTG), which guide grate (18) radially surrounds a turbine rotor (4) of the turbocharger (1) the method comprising:
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manufacturing the guide grate comprising; a blade bearing ring (6), a multiplicity of guide blades (7) each having a blade shaft (8) mounted in the blade bearing ring (6), an adjusting ring (5) operatively connected to the guide blades (7) via associated blade levers (20) fastened to the blade shafts (8) at one of the ends thereof, each blade lever (20) having at the other end a lever head (23) which can be placed in engagement with an associated engagement recess (24) of the adjusting ring (5), and a stop (25) for setting a minimum throughflow through nozzle cross sections formed by the guide blades (7), wherein the stop (25) is formed as a setting pin which is fastened by means of an automated butt welding process, a position of the setting pin being determined from iterative throughflow measurements. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for manufacturing a stop of a guide grate (18) for a turbocharger (1) with variable turbine geometry (VTG), which guide grate (18) radially surrounds a turbine rotor (4) of the turbocharger (1)
the guide grate comprising: - a blade bearing ring (6),
a multiplicity of guide blades (7) each having a blade shaft (8) mounted in the blade bearing ring (6), an adjusting ring (5) operatively connected to the guide blades (7) via associated blade levers (20) fastened to the blade shafts (8) at one of the ends thereof, each blade lever (20) having at the other end a lever head (23) which can be placed in engagement with an associated engagement recess (24) of the adjusting ring (5), the method comprising;
forming the stop (25) as a setting pin which is fastened by means of an automated butt welding process, wherein a position of the setting pin is determined from iterative throughflow measurements.
- a blade bearing ring (6),
Specification