DE102008034751A1 - Exhaust gas turbocharger for internal combustion engine, has floatingly mounted spacer ring provided between guide vanes and turbine housing, linked with inflowing exhaust gas via pressure channel and rearwardly subjected with exhaust gas - Google Patents
Exhaust gas turbocharger for internal combustion engine, has floatingly mounted spacer ring provided between guide vanes and turbine housing, linked with inflowing exhaust gas via pressure channel and rearwardly subjected with exhaust gas Download PDFInfo
- Publication number
- DE102008034751A1 DE102008034751A1 DE102008034751A DE102008034751A DE102008034751A1 DE 102008034751 A1 DE102008034751 A1 DE 102008034751A1 DE 102008034751 A DE102008034751 A DE 102008034751A DE 102008034751 A DE102008034751 A DE 102008034751A DE 102008034751 A1 DE102008034751 A1 DE 102008034751A1
- Authority
- DE
- Germany
- Prior art keywords
- spacer ring
- exhaust gas
- turbocharger
- turbine
- turbine housing
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
-
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/026—Scrolls for radial machines or engines
-
- 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
-
- 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
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
- F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
Description
Die Erfindung betrifft einen Turbolader für eine Brennkraftmaschine mit einem Turbinengehäuse und einer darin befindlichen Turbine mit einem Turbinenrad, wobei die Turbine mit einer verstellbaren Turbinengeometrie aus verstellbaren Leitschaufeln zur veränderlichen Einstellung eines Strömungseintrittsquerschnittes ausgestattet ist, in den Abgas einströmt.The The invention relates to a turbocharger for an internal combustion engine with a turbine housing and a located therein Turbine with a turbine wheel, the turbine with an adjustable Turbine geometry made of adjustable vanes for variable Adjustment of a flow inlet cross-section equipped is, flows into the exhaust gas.
Zur
Verbesserung der Leistung eines Abgasturboladers gehört
mittlerweile eine variable Turbinengeometrie wie sie zum Beispiel
in der
Ein zur Gewährleistung der Funktion bei solchen Drehschaufel-Turbinengeometrien notwendige Leitschaufelspalt wird bestimmt durch den Werkstoff und die Geometrie der Leitschaufeln sowie durch die Position und den Werkstoff von Distanzbuchsen, mit denen das Kaltspiel des Leitgitters eingestellt wird. Eine weitere Einflussgröße ist der durch thermische und mechanische Belastung entstehende Versatz zwischen den beiden Laufflächen der Stirnseite des Leitschaufelträgers und der bearbeiteten Gegenkontur des Turbinengehäuses, zu denen die Leitschaufel stirnseitig mit möglichst kleinem Spalt abschließen soll. Insbesondere bei großen Abgasturbinen kann der Betriebsspalt von einer Leitschaufel zur anderen merklich variieren. Um ein Klemmen der Leitschaufel mit dem geringsten Spalt zu verhindern, ist man daher gezwungen, ein relativ großes Kaltspiel vorzusehen und entsprechende Wirkungsgradeinbußen in Kauf zu nehmen.One to ensure the function of such rotary vane turbine geometries necessary vane gap is determined by the material and the geometry of the vanes as well as the position and the Material of distance bushings, with which the cold play of the Leitgitters is set. Another influencing factor is the resulting by thermal and mechanical stress offset between the two running surfaces of the front side of the guide vane carrier and the machined counter contour of the turbine housing, to which the vane frontally with the smallest possible To complete the gap. Especially with large Exhaust gas turbines may be the operating gap of a vane to others vary considerably. To clamp the vane with To prevent the slightest gap, one is therefore forced to provide relatively large cold play and corresponding loss of efficiency to accept.
Aus
der
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, den Wirkungsgrad eines gattungsgemäßen Turboladers mit variabler Turbinengeometrie mit einfachen Maßnahmen zu verbessern und die Nachteile aus dem Stand der Technik zu vermeiden.outgoing From this prior art, the invention is based on the object the efficiency of a generic turbocharger with variable turbine geometry with simple measures to improve and avoid the disadvantages of the prior art.
Diese Aufgabe löst die Erfindung mit den Merkmalen von Anspruch 1. Demnach weist ein Turbolader für eine Brennkraftmaschine ein Turbinengehäuse und eine darin befindliche Turbine auf, wobei die Turbine mit einer verstellbaren Turbinengeometrie aus verstellbaren Leitschaufeln zur veränderlichen Einstellung eines Strömungseintrittsquerschnittes ausgestattet ist, in den Abgas einströmt. Erfindungsgemäß ist zwischen der verstellbaren Leitschaufel und dem Turbinengehäuse ein schwimmend gelagerter Distanzring vorgesehen, welcher über einen Druckkanal mit dem einströmenden Abgas verbunden und rückwärtig von dem Abgas beaufschlagbar ist. Dabei kann der Druckkanal in eine Wand des Turbinengehäuses integriert sein. Diese Variante bietet sich insbesondere bei einem gegossenen Turbinengehäuse an, da dann eine ausreichende Wanddicke vorhanden ist. Alternativ wird der Druckkanal über eine separate Rohrleitung geführt, was insbesondere bei einem aus Blech gebauten Turbinengehäuse vorteilhaft ist. Der Distanzring kann beispielsweise ein Gussteil sein. Kostengünstig und leicht wird der Distanzring als Blechumformteil ausgeführt.This object is achieved by the invention with the features of claim 1. Accordingly, a turbocharger for an internal combustion engine on a turbine housing and a turbine therein, wherein the turbine is equipped with an adjustable turbine geometry of adjustable vanes for variable adjustment of a flow inlet cross-section, flows into the exhaust gas , According to the invention, a floating bearing spacer ring is provided between the adjustable guide vane and the turbine housing, which is connected via a pressure channel with the incoming exhaust gas and is acted upon by the exhaust gas at the rear. In this case, the pressure channel can be integrated in a wall of the turbine housing. This variant is particularly suitable for a gegos turbine housing, since then a sufficient wall thickness is available. Alternatively, the pressure channel is guided via a separate pipeline, which is advantageous in particular in the case of a turbine housing made of sheet metal. The spacer may be, for example, a casting. Affordable and easy, the spacer ring is designed as sheet metal forming part.
Wahlweise ist in dem Distanzring oder in der gegenüberliegenden Leitschaufel eine lokale Ausprägung oder Erhebung angebracht, über die abseits der Ausprägung ein Sollabstand zwischen Distanzring und Leitschaufel definiert ist. Dadurch wird zum einen ein Leckagespalt minimiert, gleichzeitig schabt das Leitgitter beim Verstellen aber nicht über die gesamte Oberfläche des Distanzrings, sondern nur über die lokale Ausprägung, was die Reibung und die notwendigen Verstellkräfte reduziert. Der Distanzring ist schwimmend gelagert, soll sich aber möglichst nur in axialer Richtung zur Leitschaufel hin und weg bewegen. Der Distanzring wird daher mindestens einseitig über eine Anlagefläche geführt. Alternativ oder zusätzlich kann der Distanzring beidseitig in einer Aufnahmenut des Turbinengehäuses geführt sein, wodurch eine unkontrollierte Bewegung ausgeschlossen ist.Optional is in the spacer ring or in the opposite vane a local expression or survey appropriate over the off-form a nominal distance between the spacer ring and guide vane is defined. As a result, on the one hand, a leakage gap Minimized, at the same time scrapes the guide grille when adjusting but not over the entire surface of the spacer ring, but only about the local expression, what the Reduced friction and the necessary adjustment forces. Of the Spacer ring is floating, but should be as possible only move in the axial direction to the vane back and forth. Of the Distance ring is therefore at least one side over a contact surface guided. Alternatively or additionally, the spacer ring guided on both sides in a receiving groove of the turbine housing be, whereby an uncontrolled movement is excluded.
In einer weiteren bevorzugten Variante erstreckt sich der Distanzring sowohl zwischen der verstellbaren Leitschaufel und dem Turbinengehäuse als auch zumindest teilweise zwischen dem Turbinenrad und dem Turbinengehäuse. Dies führt zu einer selbstdichtenden Fläche am Turbinenrad selbst. Insbesondere wenn der Distanzring ein Blechumformteil ist, kann auf das Blech des Distanzringes eine Verschleiß- oder Einlaufschicht aufgebracht werden, die sich beim ersten Betrieb des Turboladers am Turbinenrad durch die Rotation des Turbinenrades abträgt und anschließend quasi mit Nullspalt am rotierenden Turbinenrad anliegt ohne zu klemmen. Wahlweise kann der Distanzring im Auslassbereich der Turbine schieben, oder der Distanzring ist im Auslassbereich mit dem Turbinengehäuse beispielsweise durch Schweißen verbunden.In In another preferred variant, the spacer ring extends both between the adjustable vane and the turbine housing as also at least partially between the turbine wheel and the turbine housing. This leads to a self-sealing surface on Turbine wheel itself. Especially if the spacer ring is a sheet metal forming part is, can on the plate of the spacer ring wear a or enema layer are applied during the first operation of the turbocharger on the turbine wheel by the rotation of the turbine wheel abträgt and then virtually with zero gap at the rotating Turbine wheel rests without jamming. Optionally, the spacer ring in the outlet area of the turbine, or the spacer ring is in the outlet area with the turbine housing, for example connected by welding.
Nachfolgend ist die Erfindung anhand der Figuren genauer beschrieben. Dabei zeigen:following The invention is described in more detail with reference to FIGS. there demonstrate:
In
der
Alle
dargestellten Varianten der Erfindung erhöhen den Gesamtwirkungsgrad
und die Dauerhaltbarkeit eines Turboladers
- 11
- Turboladerturbocharger
- 22
- Turbinengehäuseturbine housing
- 33
- Lagergehäusebearing housing
- 44
- Wellewave
- 55
- Turbinenradturbine
- 66
- Leitschaufelvane
- 77
- Leitschaufelvane
- 88th
- AbgaseinlassbereichExhaust inlet area
- 99
- Abgasauslassbereichexhaust gas outlet
- 1010
- Distanzringspacer
- 1111
- Druckkanalpressure channel
- 1212
- Aufnahmenutreceiving groove
- 1313
- Distanzringspacer
- 1414
- Distanzringspacer
- 2020
- Turbinengehäuseturbine housing
- 2121
- Anlageflächecontact surface
- 6060
- Leitschaufelvane
- 6161
- Erhebungsurvey
- 6262
- Sollabstandtarget distance
- 7070
- Leitschaufelvane
- 100100
- Turboladerturbocharger
- 101101
- Turboladerturbocharger
- 110110
- Druckkanalpressure channel
- 120120
- Ausnehmungrecess
- 121121
- Druckraumpressure chamber
- 130130
- Ausprägungshaping
- 131131
- Sollabstandtarget distance
- 141141
- eine Seite Distanzringa Side spacer ring
- 142142
- andere Seite Distanzringother Side spacer ring
- 200200
- Turbinengehäuseturbine housing
- 210210
- Anlageflächecontact surface
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10029640 A1 [0002] - DE 10029640 A1 [0002]
- - DE 102004038748 A1 [0004] DE 102004038748 A1 [0004]
Claims (12)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008034751A DE102008034751A1 (en) | 2008-07-24 | 2008-07-24 | Exhaust gas turbocharger for internal combustion engine, has floatingly mounted spacer ring provided between guide vanes and turbine housing, linked with inflowing exhaust gas via pressure channel and rearwardly subjected with exhaust gas |
ITRM2009A000376A IT1394885B1 (en) | 2008-07-24 | 2009-07-17 | TURBOCHARGER WITH VARIABLE GEOMETRY TURBINE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008034751A DE102008034751A1 (en) | 2008-07-24 | 2008-07-24 | Exhaust gas turbocharger for internal combustion engine, has floatingly mounted spacer ring provided between guide vanes and turbine housing, linked with inflowing exhaust gas via pressure channel and rearwardly subjected with exhaust gas |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008034751A1 true DE102008034751A1 (en) | 2010-01-28 |
Family
ID=41428680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008034751A Ceased DE102008034751A1 (en) | 2008-07-24 | 2008-07-24 | Exhaust gas turbocharger for internal combustion engine, has floatingly mounted spacer ring provided between guide vanes and turbine housing, linked with inflowing exhaust gas via pressure channel and rearwardly subjected with exhaust gas |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008034751A1 (en) |
IT (1) | IT1394885B1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102562185A (en) * | 2011-12-26 | 2012-07-11 | 康跃科技股份有限公司 | Two-channel variable-section volute device with flow-guiding blades |
DE102011077135A1 (en) * | 2011-06-07 | 2012-12-13 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Variable turbine / compressor geometry |
WO2013010617A1 (en) | 2011-07-20 | 2013-01-24 | Ihi Charging Systems International Gmbh | Turbine for an exhaust-gas turbocharger |
WO2013026653A1 (en) * | 2011-08-18 | 2013-02-28 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Variable turbine/compressor geometry |
EP2940253A1 (en) * | 2014-04-29 | 2015-11-04 | Honeywell International Inc. | Turbocharger with variable-vane turbine nozzle having a differential pressure-responsive vane clearance control member |
US9371833B2 (en) | 2011-08-18 | 2016-06-21 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Variable turbine/compressor geometry |
EP4361407A1 (en) * | 2022-10-28 | 2024-05-01 | Atlas Copco Energas Gmbh | Turbomachine with adjustable guide elements and method of operating the turbomachine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10029640A1 (en) | 2000-06-15 | 2002-01-03 | 3K Warner Turbosystems Gmbh | Exhaust gas turbocharger for an internal combustion engine |
DE102004038748A1 (en) | 2004-08-10 | 2006-02-23 | Daimlerchrysler Ag | Exhaust gas turbocharger for an internal combustion engine |
-
2008
- 2008-07-24 DE DE102008034751A patent/DE102008034751A1/en not_active Ceased
-
2009
- 2009-07-17 IT ITRM2009A000376A patent/IT1394885B1/en active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10029640A1 (en) | 2000-06-15 | 2002-01-03 | 3K Warner Turbosystems Gmbh | Exhaust gas turbocharger for an internal combustion engine |
DE102004038748A1 (en) | 2004-08-10 | 2006-02-23 | Daimlerchrysler Ag | Exhaust gas turbocharger for an internal combustion engine |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011077135A1 (en) * | 2011-06-07 | 2012-12-13 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Variable turbine / compressor geometry |
WO2013010617A1 (en) | 2011-07-20 | 2013-01-24 | Ihi Charging Systems International Gmbh | Turbine for an exhaust-gas turbocharger |
DE102011108195A1 (en) | 2011-07-20 | 2013-01-24 | Ihi Charging Systems International Gmbh | Turbine for an exhaust gas turbocharger |
EP2734709A1 (en) * | 2011-07-20 | 2014-05-28 | IHI Charging Systems International GmbH | Turbine for an exhaust-gas turbocharger |
DE102011108195B4 (en) | 2011-07-20 | 2022-10-27 | Ihi Charging Systems International Gmbh | Turbine for an exhaust gas turbocharger |
US9371833B2 (en) | 2011-08-18 | 2016-06-21 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Variable turbine/compressor geometry |
WO2013026653A1 (en) * | 2011-08-18 | 2013-02-28 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Variable turbine/compressor geometry |
CN102562185A (en) * | 2011-12-26 | 2012-07-11 | 康跃科技股份有限公司 | Two-channel variable-section volute device with flow-guiding blades |
EP2940253A1 (en) * | 2014-04-29 | 2015-11-04 | Honeywell International Inc. | Turbocharger with variable-vane turbine nozzle having a differential pressure-responsive vane clearance control member |
US9765687B2 (en) | 2014-04-29 | 2017-09-19 | Honeywell International Inc. | Turbocharger with variable-vane turbine nozzle having a gas pressure-responsive vane clearance control member |
CN105041460A (en) * | 2014-04-29 | 2015-11-11 | 霍尼韦尔国际公司 | Turbocharger with variable-vane turbine nozzle |
EP4361407A1 (en) * | 2022-10-28 | 2024-05-01 | Atlas Copco Energas Gmbh | Turbomachine with adjustable guide elements and method of operating the turbomachine |
DE102022128618A1 (en) | 2022-10-28 | 2024-05-08 | Atlas Copco Energas Gmbh | Turbomachines and methods for operating a turbomachine |
Also Published As
Publication number | Publication date |
---|---|
IT1394885B1 (en) | 2012-07-20 |
ITRM20090376A1 (en) | 2010-01-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |