Oil sealing unit for a turbocharger
AssigneeBorgWarner Inc.
InventorsSvetlana FELDE, Andreas DIDION
Life of this patent
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Abstract
Oil sealing unit for a turbocharger used for sealing a passage from a bearing housing to a compressor housing. An end wall serves to delimit an oil expansion chamber in the direction of a compressor wheel. A sealing sleeve is designed for a non-rotating connection with a shaft, which connects the compressor wheel to a turbine wheel. The sealing sleeve is at least partially surrounded by the end wall. An oil guiding means is designed in such a way that an overhang is formed in relation to an oil deflection ring and in a direction radially upward in relation to at least a portion of the oil deflection ring. A sealing gap is formed between the overhang of the oil guiding means and the oil deflection ring.
Claims16
An oil sealing unit (10;
- 20;
- 30) for a turbocharger used to seal a passage from a bearing housing to a compressor housing having
- an end wall (120;
- 220;
- 320),
- the end wall (120;
- 220;
- 320) for delimiting an oil expansion chamber (130;
- 230;
- 330) in the direction of a compressor wheel (170;
- 270;
- 370);
- a sealing sleeve (112;
- 212;
- 312),
- the sealing sleeve (112;
- 212;
- 312) for a non-rotating connection with a shaft (140;
- 240;
- 340) connecting the compressor wheel (170;
- 270;
- 370) with a turbine wheel,
- wherein the sealing sleeve (112;
- 212;
- 312) is at least partially surrounded in the radial direction by the end wall (120;
- 220;
- 320);
- an oil deflection ring (114;
- 214;
- 314);
- and
- an oil guiding means (122;
- 222;
- 360);
- the oil guiding means (122;
- 222;
- 360) designed in such a way that an overhang is formed in relation to the oil deflection ring (114;
- 214;
- 314) and in a direction radially upward in relation to at least a portion of the oil deflection ring (114;
- 214;
- 314),
- wherein a sealing gap is formed between the overhang of the oil guiding means (122;
- 222;
- 360) and the oil deflection ring (114;
- 214;
- 314).
Dependencies are inferred from the claim text.