# US 10,371,043 B2 · Exhaust gas supply arrangement of an exhaust gas turbocharger

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- Number: US 10,371,043 B2
- Document ID: US10371043B2
- Status: Granted
- Kind: B2
- Application number: 15/564,753
- Filed: 2016-04-08
- Published: 2018-07-26
- Granted: 2019-08-06
- Earliest claimed: 2015-04-09
- Assignees: BorgWarner Inc.; Man Truck & Bus AG
- Applicants: BorgWarner Inc.; MAN Truck & Bus AG
- Inventors: Eduard Blahovic; Fabian Rasch; Nicolas Regent
- Web page: https://patentgrep.com/patent/US10371043B2

## CPC

- F02B 37/025: {Multiple scrolls or multiple gas passages guiding the gas to the pump drive}
- F01D 9/026: {Scrolls for radial machines or engines}
- F01D 25/243: {Flange connections; Bolting arrangements (F01D25/265 takes precedence)}
- F05D 2220/40: in turbochargers
- F05D 2240/91: on a stationary structure
- Y02T 10/12: Improving ICE efficiencies
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- 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

An exhaust gas supply arrangement (1) to a turbine wheel (11) of an exhaust gas turbocharger (2), having a flange (14) for connecting to a manifold (3) of an internal combustion engine (4), an exhaust gas supply leading from the flange (14) to the turbine wheel (11), and a partition (13) which divides the exhaust gas supply into two channels (12), wherein, in a top view of the flange (14), a coordinate system is defined, the origin thereof lying in the center of the partition (13), the y-axis thereof following the partition (13) and the x-axis thereof being perpendicular to the y-axis.

## Claims

### Claim 1

An exhaust gas supply arrangement (1) to a turbine wheel (11) of an exhaust gas turbocharger (2), having
a flange (14) for connecting to a manifold (3) of an internal combustion engine (4),
an exhaust gas supply leading from the flange (14) to the turbine wheel (11), and
a partition (13) which divides the exhaust gas supply into two channels (12),
wherein, in a top view of the flange (14), a coordinate system is defined, the origin thereof lying in the center of the partition (13), the y-axis thereof following the partition (13) and the x-axis thereof being perpendicular to the y-axis, wherein the flange (14) has a rectangular base shape with two X-outer sides (15, 16) running parallel to the x-axis and two Y-outer sides (15, 16) running parallel to the y-axis, wherein at least one of the X-outer sides (15) has a reinforcement in the form of an elevation (19), and wherein the elevation (19) is formed in the center in the X-outer side (15).

### Claim 2 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the exhaust gas supply arrangement is an integral component of a turbine housing (10) of the exhaust gas turbocharger (2).

### Claim 3 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the flange (14) is asymmetrical with respect to the x-axis, and/or the flange (14) is asymmetrical with respect to the y-axis, and/or the individual channel (12) is asymmetrical with respect to each of the straight lines parallel to the y-axis, and/or the individual channel (12) is asymmetrical with respect to each of the straight lines parallel to the x-axis.

### Claim 4 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the elevation (19) has an elevation radius (ER) from 10 to 50 mm.

### Claim 5 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the elevation (19) has an elevation width (EB) perpendicular to the y-axis, wherein the flange (14) has a largest flange width (FB) perpendicular to the y-axis, and wherein the elevation width (EB) is 0.2 to 0.7 times the flange width (FB).

### Claim 6 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein at the flange (14), a thickness (D) of the partition (13) is defined at the thinnest point of the partition (13), wherein the thickness (D) is between 6 and 16 mm.

### Claim 7 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein each of the two channels (12) at the flange (14) is delimited by:
a first Y-channel side (23) is defined by the partition (13),
a second Y-channel side (24), which lies diametrically opposite the first Y-channel side (23)
a first transition (27) from the first Y-channel side (23) into a first X-channel side (25),
a second transition (28) from the first X-channel side (25) into the second Y-channel side (24),
a third transition (29) from the second Y-channel side (24) into a second X-channel side (26), and
a fourth transition (30) from the second X-channel side (26) into the first Y-channel side (23),
wherein the first transition (27) has one curve with a first radius (R1) and one curve with a second radius (R2).

### Claim 8 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein the first transition (27) has a connection (31) between the two radii (R1, R2), wherein the connection (31) is a straight line or a curve, wherein the radius of the curve is substantially larger than the first radius (R1) and the second radius (R2).

### Claim 9 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein the first radius (R1) and/or the second radius (R2) lies between an upper limit and a lower limit, wherein the lower limit is 5 mm, and wherein the upper limit is 20 mm.

### Claim 10 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein the first radius (R1) is 65% to 150% of the second radius (R2).

### Claim 11 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein a width (B) of the individual channel (12) is defined at the widest point at the flange (14) parallel to the x-axis, wherein the width (B) is defined as a function of the first and second radii (R1, R2) by B=a*(R1+R2), where 0.8≤a ≤1.8.

### Claim 12 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein the first radius (R1) and/or the second radius (R2) lies between an upper limit and a lower limit, wherein the lower limit is 8 mm, and wherein the upper limit is 16 mm.

### Claim 13 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein the first radius (R1) and/or the second radius (R2) lies between an upper limit and a lower limit, wherein the lower limit is 10 mm, and wherein the upper limit is 14 mm.

### Claim 14 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein the first radius (R1) is 80% to 120% of the second radius (R2).

### Claim 15 (depends on 7)

The exhaust gas supply arrangement according to claim 7, wherein a width (B) of the individual channel (12) is defined at the widest point at the flange (14) parallel to the x-axis, wherein the width (B) is defined as a function of the first and second radii (R1, R2) by B=a*(R1+R2), where 1.0≤a ≤1.7.

### Claim 16 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the elevation (19) has an elevation radius (ER) from 15 to 45 mm.

### Claim 17 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the elevation (19) has an elevation radius (ER) from 20 to 40 mm.

### Claim 18 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein the elevation (19) has an elevation width (EB) perpendicular to the y-axis, wherein the flange (14) has a largest flange width (FB) perpendicular to the y-axis, and wherein the elevation width (EB) is 0.3 to 0.5 times the flange width (FB).

### Claim 19 (depends on 1)

The exhaust gas supply arrangement according to claim 1, wherein at the flange (14), a thickness (D) of the partition (13) is defined at the thinnest point of the partition (13), wherein the thickness (D) is between 8 and 14 mm.