# US 8,784,039 B2 · Variable geometry turbine

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,784,039 B2
- Document ID: US8784039B2
- Status: Granted
- Kind: B2
- Application number: 13/056,904
- Filed: 2009-07-27
- Published: 2011-06-09
- Granted: 2014-07-22
- Earliest claimed: 2008-07-30
- Assignees: Cummins Turbo Technologies Limited
- Applicants: John F. Parker; Jeremy Jose Fonseca
- Inventors: John F. Parker; Jeremy Jose Fonseca
- Web page: https://patentgrep.com/patent/US8784039B2

## CPC

- F01D 17/148: {by means of rotatable members, e.g. butterfly valves}
- F01D 17/165: {for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D17/167 takes precedence)}
- F01D 17/167: {of vanes moving in translation}
- F01N 3/021: by means of filters
- F01N 3/035: with catalytic reactors
- F02B 37/22: by varying cross-section of exhaust passages or air passages {, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits} (F02B37/24 takes precedence)
- F02B 37/24: by using pumps or turbines with adjustable guide vanes
- F02B 39/16: Other safety measures for, or other control of, pumps
- F01N 2340/06: Arrangement of the exhaust apparatus relative to the turbine of a turbocharger
- F05D 2220/40: in turbochargers
- F05D 2260/607: Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles
- Y02T 10/12: Improving ICE efficiencies
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A variable geometry turbine comprising: a housing; a turbine wheel supported within said housing for rotation about a turbine axis; an annular inlet passage within said housing upstream of said turbine wheel and defined between respective radial inlet surfaces of first and second wall members; an outlet passage within said housing downstream of said turbine wheel; an array of vanes extending across the inlet passage, said vanes being connected to said first wall member; at least one of said first and second wall members being moveable along the turbine axis to vary the size of the inlet passage and/or at least one of said vanes being rotationally moveable about an axis that is substantially parallel to said turbine axis to vary the size of the inlet passage; wherein at least one particulate filter is provided within said housing at a location such that said particulate filter can be contacted by particulate matter flowing through said turbine during use.

## Claims

### Claim 1

A variable geometry turbine comprising:
a housing;
a turbine wheel supported within said housing for rotation about a turbine axis;
an annular inlet passage within said housing upstream of said turbine wheel and defined between respective radial inlet surfaces of first and second wall members;
an outlet passage within said housing downstream of said turbine wheel;
an array of vanes extending across the inlet passage, said vanes being connected to said first wall member;
at least one of said first and second wall members being moveable along the turbine axis to vary the size of the inlet passage or at least one of said vanes being rotationally moveable about an axis that is substantially parallel to said turbine axis to vary the size of the inlet passage;
wherein at least one particulate filter is provided within said housing at a location such that said particulate filter can be contacted by particulate matter flowing through said turbine during use; and
wherein said first wall member defines a further radial surface opposite to said radial inlet surface and said at least one particulate filter is connected to said further radial surface; and
wherein said first wall member comprises at least one axially extending flange which extends away from said inlet passage and towards said housing, said at least one flange defining a space behind the first wall member in which said at least one particulate filter is provided; and
wherein said at least one axially extending flange defines one or more radially extending apertures to define radial flow path for exhaust emissions to flow behind the radial inlet surface of the first wall member during use; and
wherein said at least one particulate filter defines one or more first openings arranged to radially overlie said one or more radially extending apertures such that said radial flow path extends through said first openings.

### Claim 2 (depends on 1)

A turbine according to claim 1, wherein said one or more first openings are in fluid communication with one or more first channels defined by the at least one particulate filter such that said radial flow path extends along said first channel(s).

### Claim 3 (depends on 2)

A turbine according to claim 2, wherein said one or more first channels extend through a portion of said at least one particulate filter such that said radial flow path extends through a portion of said at least one particulate filter.

### Claim 4

A variable geometry turbine comprising:
a housing;
a turbine wheel supported within said housing for rotation about a turbine axis;
an annular inlet passage within said housing upstream of said turbine wheel and defined between respective radial inlet surfaces of first and second wall members;
an outlet passage within said housing downstream of said turbine wheel;
an array of vanes extending across the inlet passage, said vanes being connected to said first wall member;
at least one of said first and second wall members being moveable along the turbine axis to vary the size of the inlet passage or at least one of said vanes being rotationally moveable about an axis that is substantially parallel to said turbine axis to vary the size of the inlet passage;
wherein at least one particulate filter is provided within said housing at a location such that said particulate filter can be contacted by particulate matter flowing through said turbine during use, and
wherein said first wall member defines a further radial surface opposite to said radial inlet surface and said at least one particulate filter is connected to said further radial surface; and
wherein said first wall member is moveable along the turbine axis to vary the size of the inlet passage and said first wall member defines at least one axially extending flange which extends into an axially extending cavity defined by the housing behind the radial inlet surface of the first wall member, at least one particulate filter being provided in said cavity; and
wherein said at least one axially extending flange defines one or more radially extending apertures to define a radial flow path for exhaust emissions to flow behind the radial inlet surface of the first wall member during use; and
wherein said at least one particulate filter defines one or more first openings arranged to radially overlie said one or more radially extending apertures such that said radial flow path extends through said first openings.

### Claim 5 (depends on 4)

A turbine according to claim 4, wherein said one or more first openings are in fluid communication with one or more first channels defined by the at least one particulate filter such that said radial flow path extends along said first channel(s).

### Claim 6 (depends on 5)

A turbine according to claim 5, wherein said one or more first channels extend through a portion of said at least one particulate filter such that said radial flow path extends through a portion of said at least one particulate filter.

### Claim 7

A variable geometry turbine comprising:
a housing;
a turbine wheel supported within said housing for rotation about a turbine axis;
an annular inlet passage within said housing upstream of said turbine wheel and defined between respective radial inlet surfaces of first and second wall members;
an outlet passage within said housing downstream of said turbine wheel;
an array of vanes extending across the inlet passage, said vanes being connected to said first wall member;
at least one of said first and second wall members being moveable along the turbine axis to vary the size of the inlet passage or at least one of said vanes being rotationally moveable about an axis that is substantially parallel to said turbine axis to vary the size of the inlet passage;
wherein at least one particulate filter is provided within said housing at a location such that said particulate filter can be contacted by particulate matter flowing through said turbine during use; and
wherein said first wall member defines a further radial surface opposite to said radial inlet surface and said at least one particulate filter is connected to said further radial surface; and
wherein said radial inlet surface of said first wall member defines one or more axially extending apertures which define an axial flow path for gas to flow through the first wall member during use; and
wherein said at least one particulate filter defines one or more openings arranged to axially overlie said one or more axially extending apertures such that said axial flow path extends through said openings.

### Claim 8 (depends on 7)

A turbine according to claim 7, wherein said one or more openings are in fluid communication with one or more channels defined by the at least one particulate filter such that said axial flow path extends along said channel(s).

### Claim 9 (depends on 8)

A turbine according to claim 8, wherein said one or more channels extend through a portion of said at least one particulate filter such that said axial flow path extends through a portion of said at least one particulate filter.