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US 9,850,810 B2Granted
Exhaust-gas turbocharger
AssigneeBorgWarner Inc.
InventorJuergen Tschirschke
Life of this patent
Estimating the term…
Abstract
An exhaust-gas turbocharger (1) with a compressor wheel (2); with a turbine wheel (3); and with a shaft (4) on which the compressor wheel (2) and the turbine wheel (3) are arranged in a rotationally secured manner. The turbine wheel (3) has a through-opening (5) in which a first end region (6) of the shaft (4) is arranged, and the turbine wheel (3) is braced between an end-side stop (7) connected to the end region (6) and a compressor wheel-side shaft sleeve (8) fixed on the shaft (4).
Claims10
An oil-lubricated exhaust-gas turbocharger (1) with
- a compressor wheel (2);
- a turbine wheel (3);
- and
- a shaft (4) on which the compressor wheel (2) and the turbine wheel (3) are arranged in a rotationally secured manner, wherein
- the shaft has a first end to which an end-stop (7) is fixed,
- the turbine wheel (3) has a bore (5) in which a first end region (6) of the shaft (4) is arranged,
- the turbine wheel (3) is axially secured on the shaft (4) between the stop (7) and a compressor wheel-side shaft sleeve (8), and
- the turbine wheel (3) is rotationally secured by an end-side positive-locking device which cooperates with the stop (7).
5 more elements
A method for assembling an oil-lubricated exhaust-gas turbocharger (1), comprising
- providing a shaft (4) having a turbine end and a compressor end;
- fixing an end-stop (7) to the turbine end of the shaft (4);
- sliding a turbine wheel (3) onto the shaft (4) until the turbine wheel (3) abuts against the end-stop (7) and is rotationally secured by an end-side positive-locking device;
- sliding a shaft sleeve (8) onto the shaft (4) until it abuts against the turbine wheel (3);
- sliding a compressor wheel (2) onto the shaft (4), and
- screwing a shaft nut (14) onto the shaft (4) until it bears against the compressor wheel (2);
- wherein the turbine wheel is axially secured between the end-stop (7) and the shaft sleeve (8), wherein the shaft sleeve (8) is fixed:
- via a press-fit connection,
- via a pin-and-pinhole arrangement, or
- by sliding onto the shaft (4) an arrangement comprising a sealing bush (10), two bearing collars (11, 12) and a bush (13) arranged between the bearing collars (11, 12), and pressing these against the shaft sleeve (8) by a compressor wheel and nut arrangement.
7 more elements
Dependencies are inferred from the claim text.