Disk spring for a turbocharger
AssigneeBorgWarner Inc.
InventorsDirk Frankenstein, Holger Faeth, Ralf Boening
Life of this patent
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Abstract
The invention relates to a turbocharger (1) having a cartridge (K), which is arranged in a turbine housing (2), for the variable turbine geometry, having a bearing housing (3) which is arranged between the turbine housing (2) and a compressor housing of a compressor wheel and in which is arranged a bearing arrangement for a shaft (W) which supports the turbine wheel and the compressor wheel, and having a plate spring (4) which is arranged between the cartridge (K) and the bearing housing (3), wherein the plate spring (4) is constructed from at least two material layers (5, 6) and an isolator (17).
Claims17
A turbocharger (1) comprising:
- a turbine casing (2) of a turbine wheel;
- a variable turbine geometry cartridge (K) arranged in the turbine casing (2);
- a bearing housing (3) arranged between the turbine casing (2) and a compressor casing of a compressor wheel, and in which is arranged a bearing arrangement for a shaft (W) which supports the turbine wheel and the compressor wheel;
- a disk spring (4) arranged between the cartridge (K) and the bearing housing (3), the disk spring (4) including at least two material layers (5, 6), one material layer (6) being a thermal protection layer for the other material layer (5), the other material layer (5) being a disk spring layer (5);
- and
- an insulator (17) including a solid thermal insulating structure, a first portion of the insulator (17) being arranged between the material layers (5, 6) and a second portion of the insulator (17) extending beyond a radially outer end of at least one of the material layers (5,6).
A turbocharger (1) comprising:
- a turbine casing (2) of a turbine wheel;
- a variable turbine geometry cartridge (K) arranged in the turbine casing (2);
- a bearing housing (3) arranged between the turbine casing (2) and a compressor casing of a compressor wheel, and in which is arranged a bearing arrangement for a shaft (W) which supports the turbine wheel and the compressor wheel;
- a disk spring (4) arranged between the cartridge (K) and the bearing housing (3), the disk spring (4) including at least two material layers (5,6), one material layer (6) being a thermal protection layer for the other material layer (5), the other material layer (5) being a disk spring layer (5);
- and
- an insulator (17) including a solid thermal insulating structure, the insulator including a clamping region (18) arranged between radially outer locating regions (11, 11′) of the material layers (5,6), the insulator (17) further including a support region (19) arranged at an angle of about 90° to the clamping region (18).
A disk spring (4) for a turbocharger (1) comprising:
- at least two material layers (5,6) one material layer (6) being a thermal protection layer for the other material layer (5), the other material layer (5) being a disk spring layer (5);
- and
- an insulator (17) including a solid thermal insulating structure is arranged between the material layers (5,6), the insulator (17) including a clamping region (18) arranged between radially outer locating regions (11, 11′) of the material layers (5,6), and the insulator (17) further including a portion that extends beyond a radially outer end of a least one of the material layers (5,6).
Dependencies are inferred from the claim text.