US20090136338A1 - Turbocharger with at least one variable turbine geometry turbine - Google Patents
Turbocharger with at least one variable turbine geometry turbine Download PDFInfo
- Publication number
- US20090136338A1 US20090136338A1 US12/275,678 US27567808A US2009136338A1 US 20090136338 A1 US20090136338 A1 US 20090136338A1 US 27567808 A US27567808 A US 27567808A US 2009136338 A1 US2009136338 A1 US 2009136338A1
- Authority
- US
- United States
- Prior art keywords
- turbocharger according
- cover device
- rotor disk
- vanes
- turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
- F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
- F01D17/165—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Definitions
- the invention relates to a turbocharger for a combustion engine, in particular of a motor vehicle, with at least one variable turbine geometry turbine, which exhibits a rotor disk and vanes arranged on a vane support, which are spaced apart from each other around the rotor disk in at least one circumferential area.
- a turbocharger with at least one variable turbine geometry-turbine is known in the art.
- the turbine designed as a radial turbine exhibits an annular array of vanes spaced apart from each other and arranged concentrically around the rotor disk, which are arranged on a vane support. These vanes are responsible for guiding the flow on the rotor disk.
- the vanes are arranged on the vane support so that they can pivot around bearing arrangements and are swiveled by an adjuster for selecting the angular setting of the vanes.
- the angular setting of the vane supports relative to a flowing direction of an exhaust gas stream driving the turbine is selected by turning an adjuster relative to the vane support, e.g., an adjustment ring. Turning the adjustment ring swivels the vanes swivels the vans around the bearing devices.
- an angular setting optimal for the respective operating stage of the combustion engine can here be established or regulated.
- the gap between the vanes and a casing of the turbine brought about by the principle of pivoting capability additionally provide for secondary flows, and hence losses in efficiency.
- soot may build up in the gaps, thereby blocking the adjustment mechanism.
- VTG turbines can only be used up to about 830° C. Use at a higher exhaust gas stream temperature, for example in a combustion engine designed as a spark ignition engine, can only be realized with a significant outlay.
- a thermodynamic standpoint another disadvantage to the swiveling and adjustment mechanism of the known VTG turbine described above is that the ends of the vanes facing the rotor disk move further and further away from the rotor disk with increasing swiveling angles. This results in a deterioration of inflow, and hence efficiency losses.
- the vanes be immovably fixed to the vane support, and exhibit varying angular settings relative to the rotor disk in different sectors of the circumferential area, wherein the turbine for sector selection exhibits a cover device that can turn relative to the vane support and has at least one opening in its jacket surface.
- the opening here preferably extends from the inner circumference to the outer circumference of the cover device.
- the angular setting for the used vanes is selected through sector selection via the opening in the cover device, which releases the selected sector with the vanes to be used, wherein the vanes not to be used are covered from the remaining cover device.
- the turbine is a variable turbine geometry turbine (VTG-turbine). All vanes within a sector ensure an identical inflow (an identical inflow angle) for the rotor disk.
- the vanes fixed in place can be designed as simpler vane profiles by comparison to conventional VGT-turbines, since they do not have to be separately pivoted.
- the VGT-turbine is a VGT-radial turbine.
- the vanes comprise a vane ring that circumferentially envelops the rotor disk.
- the vane ring is divided into the sectors with varying angular settings for the vanes.
- the cover device with opening mounted so that it can rotate relative to the vane ring is arranged around the vane ring.
- the vane ring is securely (rigidly) arranged in the turbine in a preferred embodiment.
- the vanes extend from an inner circumferential area of the cover device to an outer circumferential area of the vane.
- the secure (rigid) vanes continuously guide the exhaust gas stream up to a vane inlet on the outer circumference of the vane.
- the sectors exhibit a uniform expansion. This yields a uniform rotational angle for changing the angular setting of the vanes.
- the circumferential expansion of the opening essentially corresponds to the circumferential expansion of the sectors. This makes the rotational angles for changing the angular setting of the vanes especially short.
- the cover device be formed or partially formed by a casing of the turbine.
- the vane support is twisted relative to the casing for sector selection.
- the cover device is preferably designed as a separate sleeve or separate adjustment ring.
- This sleeve or adjustment ring is pivoted, and releases a sector on the nozzle ring with its opening (recess), depending on the rotational angle.
- the cover device exhibits several openings and in particular several identically designed, mutually allocated sectors.
- Mutually allocated sectors of the vane ring are situated in accordance with the arrangement of openings.
- These mutually allocated sectors of varying circumferential areas preferably exhibit vanes with the same angular setting.
- a minimal gap is formed between the ends of the vanes in the outer circumferential area of the rotor disk and the rotor disk. This gap between the ends of the vanes of the vane ring in the outer circumferential area of the rotor disk and the outer circumference of the rotor disk is hence minimal, as prescribed by the manufacturing tolerances for the turbine components.
- FIG. 1 is a variable turbine geometry turbine, the cover device of which exhibits an opening, and on
- FIG. 2 is a variable turbine geometry turbine, the cover device of which exhibits two openings.
- FIG. 1 shows a turbine 2 of a combustion engine turbocharger, which is designed as a radial turbine 1 , and exhibits variable turbine geometry.
- a vane ring 4 is arranged around a rotor disk 3 of the turbine 2 , which is formed by vanes 6 spaced apart from each other.
- FIG. 1 shows only one circumferential area 7 of the vane ring 4 .
- the vane ring 4 is divided into several sectors 8 , 9 , 10 , of which only three sectors 8 , 9 , 10 are shown in the circumferential area 7 depicted on FIG. 1 .
- the vanes 6 of each sector 8 , 9 , 10 exhibit a uniform angular setting ⁇ 1 , ⁇ 2 , ⁇ 3 relative to the respective radial extension of the rotor disk 3 .
- the first sector 8 has a first angular setting ⁇ 1
- the second sector 9 a second angular setting ⁇ 2
- the third sector 10 a third angular setting ⁇ 3 .
- the number of vanes 6 is identical for each sector 8 , 9 , 10 .
- a cover device 12 designed as a sleeve 11 with an opening 14 designed as a recess 13 is arranged around the vane ring 4 ,
- the opening 14 extends from an inner circumference 15 to an outer circumference 15 ′ of a jacket surface 16 of the cover device 12 .
- the cover device 12 is pivoted (dual arrow 17 ), and releases one of the sectors 8 , 9 , 10 on the vane ring 4 with its opening 14 depending on a (selected) rotational angle set by way of an adjustment mechanism (not shown) (hence the first sector 8 on FIG. 1 ).
- the circumferential expansion of the opening 14 essentially corresponds to the circumferential uniform expansion the sectors 8 , 9 , 10 .
- Each of the vanes 6 extends from the inner circumference 15 of the jacket surface of the cover device 12 up to an outer circumferential area 18 of the rotor disk 3 .
- One of the angular settings ⁇ 1 , ⁇ 2 , ⁇ 3 of the used vane supports 5 is selected by choosing a sector 8 , 9 , 10 (sector selection) via the opening 14 in the cover device 12 , which releases the selected sector 8 , 9 , 10 with the vanes 6 to be used, wherein the vanes 6 of the other sectors 8 , 9 , 10 not to be used are covered by the rest of the cover device 12 .
- the few reciprocally rotating parts 4 , 12 provided for selecting the angular setting enables the use of the turbine 2 even at high temperatures of an exhaust gas stream driving the turbine.
- the turbine 2 on FIG. 2 essentially corresponds to the turbine 2 on FIG. 1 , so that only the differences will be discussed here.
- the turbine 2 with variable turbine geometry exhibits a cover device 12 designed as an adjustment ring 19 with two opposing openings 14 , 20 .
- Mutually allocated first sectors 8 , 21 with angular setting ⁇ 1 and mutually allocated second sectors 9 , 22 with angular setting ⁇ 2 of the vane ring 4 are situated in accordance with the arrangement of openings 14 , 20 .
- These mutually allocated sectors 8 , 21 ; 9 , 22 of varying circumferential areas 7 , 23 exhibit vanes 6 with identical angular settings ⁇ 1 , ⁇ 2 .
- the mutually allocated first sectors 8 , 21 induce a radial inflow of the rotor disk 3 , and enable a high throughput of exhaust gas.
- the mutually allocated second sectors 9 , 22 enable a tangential inflow of the rotor disk 3 , and a high flow rate of the exhaust gas. The following applies: ⁇ 1 ⁇ 2 .
- openings 14 , 20 place a more uniform load over the entire circumference of the rotor disk 3 during operation.
- the number n of sectors 8 , 9 , 10 of varying angular setting ⁇ 1 , ⁇ 2 , . . . , ⁇ n (different sectors 8 , 9 , 10 ) is freely selectable (with n ⁇ 1).
- the number m of mutually allocated sectors 8 , 21 ; 9 , 22 is also freely selectable (with m ⁇ 1).
- Mutually allocated sectors 8 , 21 ; 9 , 22 preferably exhibit identical angular settings, and are in particular identically designed.
- a gap 24 arising between the ends 25 of the vanes 3 of the vane ring 4 in the outer circumferential area 18 of the rotor disk 3 and outer circumference of the rotor disk 3 is minimal, as stipulated by the manufacturing tolerances for the turbine components.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
The invention relates to a turbocharger for a combustion engine, in particular of a motor vehicle, with at least one variable turbine geometry turbine, which exhibits a rotor disk and vanes arranged on a vane support, which are spaced apart from each other around the rotor disk in at least one circumferential area, and with an adjuster to select the angular setting of the vanes. It is provided that the vanes (6) are fixed securely to the vane support (5), and exhibit different angular settings (α1, α2, α3) relative to the rotor disk (3) in varying sectors (8, 9, 10) of the circumferential area (7), wherein the turbine (2) exhibits a cover device (12) that can rotate relative to the vane support (5) with at least one opening (14, 20) in its jacket surface (16) for purposes of sector selection.
Description
- The invention relates to a turbocharger for a combustion engine, in particular of a motor vehicle, with at least one variable turbine geometry turbine, which exhibits a rotor disk and vanes arranged on a vane support, which are spaced apart from each other around the rotor disk in at least one circumferential area.
- A turbocharger with at least one variable turbine geometry-turbine (VTG-turbine) is known in the art. To this end, the turbine designed as a radial turbine exhibits an annular array of vanes spaced apart from each other and arranged concentrically around the rotor disk, which are arranged on a vane support. These vanes are responsible for guiding the flow on the rotor disk. The vanes are arranged on the vane support so that they can pivot around bearing arrangements and are swiveled by an adjuster for selecting the angular setting of the vanes. The angular setting of the vane supports relative to a flowing direction of an exhaust gas stream driving the turbine is selected by turning an adjuster relative to the vane support, e.g., an adjustment ring. Turning the adjustment ring swivels the vanes swivels the vans around the bearing devices. In this case, an angular setting optimal for the respective operating stage of the combustion engine can here be established or regulated.
- To ensure that the vanes can be adjusted in the entire temperature range of the exhaust gas stream, high requirements must be placed on the fit of the bearing devices of the vanes, which in turn is associated with high manufacturing costs. The gap between the vanes and a casing of the turbine brought about by the principle of pivoting capability additionally provide for secondary flows, and hence losses in efficiency. In addition, soot may build up in the gaps, thereby blocking the adjustment mechanism.
- All efforts notwithstanding, conventional VTG turbines can only be used up to about 830° C. Use at a higher exhaust gas stream temperature, for example in a combustion engine designed as a spark ignition engine, can only be realized with a significant outlay. Form a thermodynamic standpoint, another disadvantage to the swiveling and adjustment mechanism of the known VTG turbine described above is that the ends of the vanes facing the rotor disk move further and further away from the rotor disk with increasing swiveling angles. This results in a deterioration of inflow, and hence efficiency losses.
- To reduce the number of rotating/pivoting parts for varying the turbine geometry, it is provided that the vanes be immovably fixed to the vane support, and exhibit varying angular settings relative to the rotor disk in different sectors of the circumferential area, wherein the turbine for sector selection exhibits a cover device that can turn relative to the vane support and has at least one opening in its jacket surface. The opening here preferably extends from the inner circumference to the outer circumference of the cover device. The angular setting for the used vanes is selected through sector selection via the opening in the cover device, which releases the selected sector with the vanes to be used, wherein the vanes not to be used are covered from the remaining cover device. The few reciprocally rotating parts provided for selecting the angular setting makes it possible to use the turbine at high exhaust gas stream temperatures. The turbine is a variable turbine geometry turbine (VTG-turbine). All vanes within a sector ensure an identical inflow (an identical inflow angle) for the rotor disk. The vanes fixed in place (relative to the vane support) can be designed as simpler vane profiles by comparison to conventional VGT-turbines, since they do not have to be separately pivoted. In particular, the VGT-turbine is a VGT-radial turbine.
- In an advantageous embodiment of the invention, the vanes comprise a vane ring that circumferentially envelops the rotor disk. The vane ring is divided into the sectors with varying angular settings for the vanes. The cover device with opening mounted so that it can rotate relative to the vane ring is arranged around the vane ring. The vane ring is securely (rigidly) arranged in the turbine in a preferred embodiment.
- It is advantageously provided that the vanes extend from an inner circumferential area of the cover device to an outer circumferential area of the vane. The secure (rigid) vanes continuously guide the exhaust gas stream up to a vane inlet on the outer circumference of the vane.
- In an advantageous embodiment of the invention, the sectors exhibit a uniform expansion. This yields a uniform rotational angle for changing the angular setting of the vanes.
- In particular, the circumferential expansion of the opening essentially corresponds to the circumferential expansion of the sectors. This makes the rotational angles for changing the angular setting of the vanes especially short.
- Further advantageously provided is that the cover device be formed or partially formed by a casing of the turbine. In this embodiment, the vane support is twisted relative to the casing for sector selection.
- As an alternative, the cover device is preferably designed as a separate sleeve or separate adjustment ring. This sleeve or adjustment ring is pivoted, and releases a sector on the nozzle ring with its opening (recess), depending on the rotational angle.
- In an advantageous embodiment of the invention, the cover device exhibits several openings and in particular several identically designed, mutually allocated sectors. Mutually allocated sectors of the vane ring are situated in accordance with the arrangement of openings. These mutually allocated sectors of varying circumferential areas preferably exhibit vanes with the same angular setting.
- Finally, it is advantageously provided that a minimal gap is formed between the ends of the vanes in the outer circumferential area of the rotor disk and the rotor disk. This gap between the ends of the vanes of the vane ring in the outer circumferential area of the rotor disk and the outer circumference of the rotor disk is hence minimal, as prescribed by the manufacturing tolerances for the turbine components.
- The invention will be described in greater detail below based on the accompanying drawings. Shown on:
-
FIG. 1 is a variable turbine geometry turbine, the cover device of which exhibits an opening, and on -
FIG. 2 is a variable turbine geometry turbine, the cover device of which exhibits two openings. -
FIG. 1 shows a turbine 2 of a combustion engine turbocharger, which is designed as a radial turbine 1, and exhibits variable turbine geometry. A vane ring 4 is arranged around a rotor disk 3 of the turbine 2, which is formed byvanes 6 spaced apart from each other.FIG. 1 shows only onecircumferential area 7 of the vane ring 4. The vane ring 4 is divided intoseveral sectors 8, 9, 10, of which only threesectors 8, 9, 10 are shown in thecircumferential area 7 depicted onFIG. 1 . Thevanes 6 of eachsector 8, 9, 10 exhibit a uniform angular setting α1, α2, α3 relative to the respective radial extension of the rotor disk 3. The first sector 8 has a first angular setting α1, the second sector 9 a second angular setting α2, and the third sector 10 a third angular setting α3. The number ofvanes 6 is identical for eachsector 8, 9, 10. - A cover device 12 designed as a sleeve 11 with an opening 14 designed as a recess 13 is arranged around the vane ring 4, The
opening 14 extends from aninner circumference 15 to anouter circumference 15′ of ajacket surface 16 of the cover device 12. The cover device 12 is pivoted (dual arrow 17), and releases one of thesectors 8, 9, 10 on the vane ring 4 with itsopening 14 depending on a (selected) rotational angle set by way of an adjustment mechanism (not shown) (hence the first sector 8 onFIG. 1 ). The circumferential expansion of theopening 14 essentially corresponds to the circumferential uniform expansion thesectors 8, 9, 10. Each of thevanes 6 extends from theinner circumference 15 of the jacket surface of the cover device 12 up to an outercircumferential area 18 of the rotor disk 3. - The following function results for the depicted arrangement to change the turbine geometry of turbine 2: One of the angular settings α1, α2, α3 of the used vane supports 5 is selected by choosing a sector 8, 9, 10 (sector selection) via the
opening 14 in the cover device 12, which releases theselected sector 8, 9, 10 with thevanes 6 to be used, wherein thevanes 6 of theother sectors 8, 9, 10 not to be used are covered by the rest of the cover device 12. The few reciprocally rotating parts 4, 12 provided for selecting the angular setting enables the use of the turbine 2 even at high temperatures of an exhaust gas stream driving the turbine. - The turbine 2 on
FIG. 2 essentially corresponds to the turbine 2 onFIG. 1 , so that only the differences will be discussed here. The turbine 2 with variable turbine geometry exhibits a cover device 12 designed as an adjustment ring 19 with twoopposing openings first sectors 8, 21 with angular setting α1 and mutually allocatedsecond sectors 9, 22 with angular setting α2 of the vane ring 4 are situated in accordance with the arrangement ofopenings sectors 8, 21; 9, 22 of varyingcircumferential areas exhibit vanes 6 with identical angular settings α1, α2. The mutually allocatedfirst sectors 8, 21 induce a radial inflow of the rotor disk 3, and enable a high throughput of exhaust gas. The mutually allocatedsecond sectors 9, 22 enable a tangential inflow of the rotor disk 3, and a high flow rate of the exhaust gas. The following applies: α1<<α2. - Several (two here)
openings - The number n of
sectors 8, 9, 10 of varying angular setting α1, α2, . . . , αn (different sectors 8, 9, 10) is freely selectable (with n≧1). The number m of mutually allocatedsectors 8, 21; 9, 22 is also freely selectable (with m≧1). Mutually allocatedsectors 8, 21; 9, 22 preferably exhibit identical angular settings, and are in particular identically designed. - A
gap 24 arising between theends 25 of the vanes 3 of the vane ring 4 in the outercircumferential area 18 of the rotor disk 3 and outer circumference of the rotor disk 3 is minimal, as stipulated by the manufacturing tolerances for the turbine components.
Claims (21)
1. A turbocharger for a combustion engine comprising:
at least one variable turbine-geometry turbine, including a rotor disk, a vane support, and vanes arranged on the vane support, which are spaced apart around the rotor disk, at least in a circumferential area for defining at least one sector; and
a cover device having a jacket surface, wherein the cover device rotates relative to the vane support, and at least one opening is included in the jacket surface for selecting a sector;
wherein the vanes are fixed securely to the vane support, and exhibit different angular settings relative to the rotor disk in varying sectors of the circumferential area.
2-9. (canceled)
10. The turbocharger according to claim 1 , wherein the vanes create a vane support that circumferentially envelops the rotor disk.
11. The turbocharger according to claim 1 , wherein the vanes extend from an inner circumference of the cover device to an outer circumference of the rotor disk.
12. The turbocharger according to claim 1 , wherein the sectors include a uniform expansion.
13. The turbocharger according to claim 1 , wherein a circumferential expansion of the opening corresponds to a circumferential expansion of the sectors.
14. The turbocharger according to claim 1 , wherein the cover device is at least partially created by a casing of the turbine.
15. The turbocharger according to claim 1 , wherein the cover device is designed as one of a separate sleeve and a separate adjustment ring.
16. The turbocharger according to claim 1 , wherein the cover device includes several openings and the turbocharger includes at least two generally identically designed, mutually allocated sectors.
17. The turbocharger according to claim 1 , wherein a minimal gap is created between ends of the vanes in an outer circumferential area of the rotor disk and an outer circumference of the rotor disk.
18. The turbocharger according to claim 10 , wherein the vanes extend from an inner circumference of the cover device to an outer circumference of the rotor disk.
19. The turbocharger according to claim 10 , wherein the sectors include a uniform expansion.
20. The turbocharger according to claim 10 , wherein a circumferential expansion of the opening corresponds to a circumferential expansion of the sectors.
21. The turbocharger according to claim 10 , wherein the cover device is at least partially created by a casing of the turbine.
22. The turbocharger according to claim 10 , wherein the cover device is one of a separate sleeve and a separate adjustment ring.
23. The turbocharger according to claim 10 , wherein the cover device includes several openings and the turbocharger includes at least two generally identically designed, mutually allocated sectors.
24. The turbocharger according to claim 10 , wherein a minimal gap is created between ends of the vanes in an outer circumferential area of the rotor disk and an outer circumference of the rotor disk.
25. The turbocharger according to claim 11 , wherein the sectors include a uniform expansion.
26. The turbocharger according to claim 11 , wherein a circumferential expansion of the opening corresponds to a circumferential expansion of the sectors.
27. The turbocharger according to claim 11 , wherein the cover device is at least partially created by a casing of the turbine.
28. The turbocharger according to claim 11 , wherein the cover device is one of a separate sleeve and a separate adjustment ring.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007056889A DE102007056889A1 (en) | 2007-11-26 | 2007-11-26 | Exhaust gas turbocharger with at least one turbine of variable turbine geometry |
DE102007056889.6 | 2007-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090136338A1 true US20090136338A1 (en) | 2009-05-28 |
Family
ID=40577084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/275,678 Abandoned US20090136338A1 (en) | 2007-11-26 | 2008-11-21 | Turbocharger with at least one variable turbine geometry turbine |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090136338A1 (en) |
DE (1) | DE102007056889A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102606233A (en) * | 2012-03-19 | 2012-07-25 | 康跃科技股份有限公司 | Variable-section spiral case with blade nozzle ring |
US20140237993A1 (en) * | 2011-11-16 | 2014-08-28 | Mack Trucks, Inc. | Diesel engine arrangement and method for varnish build-up control |
EP3199754A1 (en) * | 2016-01-29 | 2017-08-02 | Pratt & Whitney Canada Corp. | Inlet guide assembly |
CN111005771A (en) * | 2020-01-03 | 2020-04-14 | 清华大学 | Rotary variable nozzle portion air inlet axial flow turbine |
CN111156052A (en) * | 2020-01-03 | 2020-05-15 | 清华大学 | Rotary variable nozzle part air inlet radial turbine |
US11168580B2 (en) * | 2020-01-08 | 2021-11-09 | GM Global Technology Operations LLC | Engine system including pivoting vane turbocharger having vane(s) that are adjustable to one position while other vane(s) of the turbocharger are adjusted to another position |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102009020592A1 (en) * | 2009-05-09 | 2010-11-11 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Charging device i.e. exhaust gas turbocharger, for motor vehicle, has flow channel lying between rotatably supported guide vanes, where one guide vane is flow-permeable and forms another flow channel |
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2007
- 2007-11-26 DE DE102007056889A patent/DE102007056889A1/en not_active Withdrawn
-
2008
- 2008-11-21 US US12/275,678 patent/US20090136338A1/en not_active Abandoned
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US20100278628A1 (en) * | 2006-08-18 | 2010-11-04 | Joho Corporation | Turbine with variable number of nozzles |
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CN102606233A (en) * | 2012-03-19 | 2012-07-25 | 康跃科技股份有限公司 | Variable-section spiral case with blade nozzle ring |
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CN111005771A (en) * | 2020-01-03 | 2020-04-14 | 清华大学 | Rotary variable nozzle portion air inlet axial flow turbine |
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Owner name: BOSCH MAHLE TURBO SYSTEMS GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LAUBENDER, JOCHEN;STEIDTEN, THOMAS;RAUSCHER, MARTIN;REEL/FRAME:022224/0496 Effective date: 20081212 |
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