Turbocharger
AssigneeIHI Corporation
InventorsMasashige Takahashi, Yukio Takahashi
Life of this patent
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Abstract
A turbocharger includes a semi-floating metal. The semi-floating metal is provided with a supply opening configured to supply oil to an inner bearing section. The turbocharger is provided with: an oil supply path which extends from inside of a bearing housing to the supply opening, and feeds the oil to be supplied to the inner bearing section; a removal section which changes a flowing direction of the oil supplied from an upstream side to separate minute foreign matter in the oil; and a conveyance path and a retaining region which collect the minute foreign matter separated by the removal section so as to prevent the minute foreign matter from mixing again with the oil flowing toward the supply opening.
Claims5
A turbocharger comprising:
- a turbine wheel constituting a turbine;
- a compressor wheel constituting a compressor;
- a rotating shaft connecting the turbine wheel and the compressor wheel to each other;
- a housing which houses at least the rotating shaft;
- and
- a semi-floating metal bearing forming a fluid bearing between the rotating shaft and the housing, wherein
- an oil reservoir space is formed between the housing and the semi-floating metal bearing to temporarily retain oil,
- the housing is provided with a first supply opening configured to supply oil to the oil reservoir space,
- the semi-floating metal bearing is provided with a second supply opening configured to supply oil in the oil reservoir space to an inner bearing section formed between the semi-floating metal bearing and the rotating shaft,
- the first supply opening and the second supply opening are located at different positions in an axial direction of the rotating shaft,
- a separation wall surface is provided at a position at an outer peripheral surface of the semi-floating metal bearing, and is opposed to the first supply opening, and
- an outer diameter of the outer peripheral surface of the semi-floating metal bearing is constant from a position opposed to the first supply opening to the second supply opening.
A turbocharger, comprising:
- a turbine wheel constituting a turbine;
- a compressor wheel constituting a compressor;
- a rotating shaft connecting the turbine wheel and the compressor wheel to each other:
- a housing which houses at least the rotating shaft;
- and
- a semi-floating metal bearing forming a fluid bearing between the rotating shaft and the housing, wherein
- an oil reservoir space is formed between the housing and the semi-floating metal bearing to temporarily retain oil,
- the housing is provided with a first supply opening configured to supply oil to the oil reservoir space,
- the semi-floating metal bearing is provided with a second supply opening configured to supply oil in the oil reservoir space to an inner bearing section formed between the semi-floating metal bearing and the rotating shaft, and
- the second supply opening of the semi-floating metal bearing is provided on an opposite side to the first supply opening across the rotating shaft, and is provided at a position lower than the rotating shaft,
- wherein the semi-floating metal bearing is capable of minimizing entry of minute foreign matter into the inner bearing section without blocking a function of the semi-floating metal bearing.
Dependencies are inferred from the claim text.