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US 2011/0236193 A1Published application
Turbocharger bearing lubrication
AssigneeSchaeffler Technologies AG & Co. KG
InventorsAaron CHRISS, Thomas SLAIBY
Life of this patent
Estimating the term…
Abstract
A turbocharger assembly includes a turbocharger housing, an elongated cylindrical center housing, a turbine in a turbine housing, a compressor in a compressor housing and a bearing assembly on a rotary shaft. The bearing assembly including balls, ball retainers, an inner and outer ring with raceways thereon, a lubrication port and a cooling port. The cooling port is located towards the outside of the bearing and directed away from the bearing, whereas the lubrication port is directed towards the bearing and is located towards an inside surface of the bearing.
Claims17
A turbocharger assembly comprising:
- an outer turbocharger housing,
- a turbine positioned in a turbine housing, the turbine housing assembled with the turbocharger housing, with the turbine positioned on a rotary shaft,
- a compressor positioned on the rotary shaft in a compressor housing, the compressor housing assembled with the turbocharger housing on an opposite end from the turbine housing,
- a center housing assembled between the compressor housing and the turbine housing, within an inner cavity in the turbocharger housing,
- at least two ball bearings positioned towards opposing ends on the rotary shaft between the turbine and the compressor, the ball bearings comprising an outer ring with an outer bearing raceway, a plurality of balls, a ball retainer and an inner ring with an inner bearing raceway,
- a lubricant reservoir and channel in the turbocharger housing,
- at least one bearing lubrication port connected to the reservoir, the port positioned in the center housing between the bearings, directed toward lubricating at least one of the bearings;
- at least one turbocharger cooling port connected to the reservoir, the port positioned in the center housing outside of the bearings, directing lubricant away from the bearings and toward cooling and lubrication of the turbocharger system,
- a lubricant exhaust port in the center housing, and
- a lubricant exhaust port in the outer turbocharger housing to return the lubricant to a central lubricant sump.
7 more elements
A turbocharger assembly comprising:
- an outer turbocharger housing,
- a turbine positioned in a turbine housing, the turbine housing assembled with the turbocharger housing, with the turbine positioned on a rotary shaft,
- a compressor positioned on the rotary shaft in a compressor housing, the compressor housing assembled with the turbocharger housing on an opposite end from the turbine housing,
- a center housing assembled between the compressor housing and the turbine housing, within an inner cavity in the turbocharger housing,
- at least two ball hearings positioned towards opposing ends on the rotary shaft between the turbine and the compressor, the bearings comprising an outer ring formed from the center housing with an outer bearing raceway formed therein, a plurality of balls, a ball retainer and an inner ring with an inner bearing raceway,
- a lubricant reservoir and channel in the turbocharger housing,
- at least one bearing lubrication port connected to the reservoir, the port positioned in the center housing between the bearings, directed toward lubricating at least one of the bearings;
- at least one turbocharger cooling port connected to the reservoir, the port positioned in the center housing outside of the bearings, directing lubricant away from the bearings and toward cooling and lubrication of the turbocharger system,
- a lubricant exhaust port in the center housing, and
- a lubricant exhaust port in the outer turbocharger housing to return the lubricant to a central lubricant sump.
7 more elements
A bearing assembly for a turbocharger system, comprising:
- a cylindrical, hollow shaft,
- at least two ball bearings positioned towards opposing ends on a rotary shaft, the bearings comprising an outer ring formed from the hollow shaft with an outer bearing raceway formed therein, a plurality of balls, a ball retainer and an inner ring with an inner bearing raceway,
- at least one bearing lubrication port, the port positioned in the hollow shaft between the bearings, directed toward lubricating at least one of the bearings;
- at least one cooling port connected to the reservoir, the port positioned in the hollow shaft outside of the bearings, directing lubricant away from the hearings and toward cooling and lubrication of the turbocharger system, and
- a lubricant exhaust port positioned through a bottom surface of the hollow shaft.
2 more elements
A bearing assembly for a turbocharger system, comprising:
- a cylindrical, hollow shaft,
- at least two ball bearings fixedly positioned towards opposing ends within the hollow shaft, assembled onto a rotary shaft, the ball bearings comprising an outer ring with an outer bearing raceway, a plurality of balls, a ball retainer and an inner ring with an inner bearing raceway,
- a spacer located between the at least two bearings,
- at least one bearing lubrication port, the port positioned in the hollow shaft between the bearings, directed toward lubricating at least one of the bearings;
- at least one cooling port connected to the reservoir, the port positioned in the hollow shaft outside of the hearings, directing lubricant away from the hearings and toward cooling and lubrication of the turbocharger system, and
- a lubricant exhaust port positioned through a bottom surface of the hollow shaft.
3 more elements
Dependencies are inferred from the claim text.