# US 10,502,263 B2 · Turbocharger with gas and liquid flow paths

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- Number: US 10,502,263 B2
- Document ID: US10502263B2
- Status: Granted
- Kind: B2
- Application number: 15/675,429
- Filed: 2017-08-11
- Published: 2019-02-14
- Granted: 2019-12-10
- Earliest claimed: 2017-08-11
- Assignees: Garrett Transportation I Inc.
- Applicants: Garrett Transportation I Inc.
- Inventors: Daniel Wood; Philippe Noelle; Xiao Lei Jin
- Web page: https://patentgrep.com/patent/US10502263B2

## CPC

- F16C 33/1045: {Details of supply of the liquid to the bearing}
- F01D 25/16: Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C)
- F01D 25/18: Lubricating arrangements (of machines or engines in general F01M)
- F01D 25/186: {for sliding contact bearing}
- F04D 17/10: for compressing or evacuating
- F04D 29/063: specially adapted for elastic fluid pumps
- F04D 29/083: {especially adapted for elastic fluid pumps}
- F02M 2026/001: {Arrangements; Control features; Details}
- F05D 2220/40: in turbochargers
- F05D 2240/58: Piston ring seals
- F05D 2260/602: Drainage
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

A turbocharger can include a housing that includes an interior cavity in fluid communication with a lubricant inlet and a lubricant outlet where, at a compressor side, the interior cavity includes an effective opening at a first axial face that spans an azimuthal angle about an axis of a through bore of the housing; a compressor side plate disposed at least in part in a compressor side recess of the housing; and a lubricant deflector plate disposed between the compressor side plate and the first axial face of the housing where the lubricant deflector plate includes an effective opening that substantially spans the azimuthal angle about the axis and where the lubricant deflector plate defines a seal cavity with respect to a compressor side seal recess of the housing.

## Claims

### Claim 1

A turbocharger comprising:
a housing that comprises
a compressor side,
a turbine side,
a through bore that extends between the compressor side and the turbine side,
a compressor side recess defined in part by a first radius and a first axial face with respect to an axis of the through bore,
a compressor side seal recess defined in part by a second radius and a second axial face with respect to the axis wherein the compressor side seal recess comprises a drain passage,
a lubricant inlet,
a lubricant outlet, and
an interior cavity in fluid communication with the lubricant inlet and the lubricant outlet wherein, at the compressor side, the interior cavity comprises an interior cavity effective opening at the first axial face that spans an azimuthal angle about the axis of at least 90 degrees, wherein the housing comprises a cast housing wherein the interior cavity effective opening at the first axial face that spans the azimuthal angle about the axis comprises a cast opening;
a shaft and turbine wheel assembly that comprises a shaft free end and a turbine wheel end;
a collar that comprises a bore wherein the shaft is received in the bore of the collar;
a compressor side plate disposed at least in part in the compressor side recess wherein the compressor side plate comprises an opening and wherein the collar is disposed at least in part in the opening; and
a lubricant deflector plate disposed between the compressor side plate and the first axial face of the housing wherein the lubricant deflector plate comprises a lubricant deflector plate effective opening that spans an azimuthal angle about the axis of at least 90 degrees, wherein the interior cavity effective opening and the lubricant deflector plate effective opening at least partially overlap to form at least one gas passage, and wherein the lubricant deflector plate defines a seal cavity with respect to the compressor side seal recess.

### Claim 2 (depends on 1)

The turbocharger of claim 1 wherein the lubricant deflector plate defines at least a portion of the drain passage.

### Claim 3 (depends on 1)

The turbocharger of claim 1 wherein the drain passage and the lubricant outlet are located at a substantially common azimuthal angle with respect to the axis.

### Claim 4 (depends on 3)

The turbocharger of claim 3 wherein the common azimuthal angle corresponds to an installed orientation of the turbocharger that aligns the drain passage and the lubricant outlet with respect to gravity.

### Claim 5 (depends on 1)

The turbocharger of claim 1 wherein the interior cavity effective opening, at the first axial face that spans the azimuthal angle about the axis, enlarges a range of installed orientation angles of the turbocharger.

### Claim 6 (depends on 5)

The turbocharger of claim 5 wherein the range of installed orientation angles of the turbocharger comprises a range from −45 degrees to +45 degrees.

### Claim 7 (depends on 5)

The turbocharger of claim 5 wherein the interior cavity effective opening spans an azimuthal angle of at least 130 degrees and wherein the range of installed orientation angles of the turbocharger comprises a range from −65 degrees to +65 degrees.

### Claim 8 (depends on 5)

The turbocharger of claim 5 wherein the interior cavity effective opening spans an azimuthal angle of at least 170 degrees and wherein the range of installed orientation angles of the turbocharger comprises a range from −85 degrees to +85 degrees.

### Claim 9 (depends on 1)

The turbocharger of claim 1 wherein the lubricant deflector plate comprises a planar plate.

### Claim 10 (depends on 1)

The turbocharger of claim 1 wherein the lubricant deflector plate comprises a planar portion and a rim that extends axially outwardly from the planar portion.

### Claim 11 (depends on 1)

The turbocharger of claim 1 wherein the compressor side plate comprises an outer surface and an annular groove in the outer surface wherein the annular groove receives a seal element that forms a seal with respect to a surface of the housing that defines in part the compressor side recess of the housing.

### Claim 12 (depends on 1)

The turbocharger of claim 1 comprising at least one seal element disposed between the collar and the compressor side plate.

### Claim 13 (depends on 12)

The turbocharger of claim 12 wherein the at least one seal element comprises at least one piston ring.

### Claim 14 (depends on 1)

The turbocharger of claim 1 comprising a journal bearing.

### Claim 15 (depends on 14)

The turbocharger of claim 14 wherein the journal bearing comprises a unitary journal bearing that comprises a compressor side journal and a turbine side journal.

### Claim 16 (depends on 1)

The turbocharger of claim 1 wherein the cast opening corresponds to and is formed by at least one casting core.

### Claim 17 (depends on 1)

The turbocharger of claim 1 wherein the lubricant deflector plate comprises eyes, a nose and a smile wherein the eyes comprise bolt openings, wherein the nose comprises a shaft opening and wherein the lubricant deflector plate effective opening forms the smile.