DE102004023282A1 - Exhaust-gas turbocharger for motor vehicle, has guide vane carrier with cascaded section having reduced outer diameter, which is smaller than inner diameter of radial inner surface of ring, such that section forms radial plain bearing - Google Patents

Exhaust-gas turbocharger for motor vehicle, has guide vane carrier with cascaded section having reduced outer diameter, which is smaller than inner diameter of radial inner surface of ring, such that section forms radial plain bearing Download PDF

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Publication number
DE102004023282A1
DE102004023282A1 DE200410023282 DE102004023282A DE102004023282A1 DE 102004023282 A1 DE102004023282 A1 DE 102004023282A1 DE 200410023282 DE200410023282 DE 200410023282 DE 102004023282 A DE102004023282 A DE 102004023282A DE 102004023282 A1 DE102004023282 A1 DE 102004023282A1
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DE
Germany
Prior art keywords
vane carrier
adjusting ring
gas turbocharger
radial
section
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.)
Withdrawn
Application number
DE200410023282
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German (de)
Inventor
Dikran-Can Dipl.-Ing. Magzalci
Thomas Dipl.-Ing. Reske
Frank Dipl.-Ing. Wucherpfennig
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Volkswagen AG
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Volkswagen AG
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Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Priority to DE200410023282 priority Critical patent/DE102004023282A1/en
Publication of DE102004023282A1 publication Critical patent/DE102004023282A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

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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 turbocharger has guide vanes rotatably arranged at a guide vane carrier (10) that is attached with adjustable rocker arm lever. The carrier includes a cascaded section with reduced outer diameter, at an axial end over a predetermined axial width. The outer diameter of the section is smaller than an inner diameter of a radial inner surface of an adjustable ring (26), such that the section forms radial plain bearing for the ring.

Description

Die Erfindung betrifft einen Abgasturbolader mit variabler Turbinengeometrie einer Brennkraftmaschine, insbesondere eines Kraftfahrzeuges, mit an einem Leitschaufelträger schwenkbar angeordneten Leitschaufeln einer Turbine, denen jeweils ein Verstellhebel zugeordnet ist, und mit einem Verstellring, welcher mit den Verstellhebeln zusammen wirkt und durch Drehung relativ zum Leitschaufelträger eine Winkelstellung der Leitschaufeln relativ zu einer Strömungsrichtung kollektiv für alle Leitschaufeln verstellt, wobei der Verstellring an seiner radialen Innenfläche mittels einer Gleitlagerung radial geführt ist, gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to an exhaust gas turbocharger with variable turbine geometry an internal combustion engine, in particular a motor vehicle, with on a vane carrier pivotally arranged vanes of a turbine, each of which an adjusting lever is assigned, and with an adjusting ring, which interacts with the adjusting levers and relative rotation to the vane carrier an angular position of the vanes relative to a flow direction collectively for adjusted all the vanes, wherein the adjusting ring at its radial palm is guided radially by means of a sliding bearing, according to the preamble of claim 1

Der Erfindung liegt die Aufgabe zugrunde, einen Aufbau und eine Montage eines Abgasturboladers zu vereinfachen.Of the Invention is based on the object, a structure and a mounting to simplify an exhaust gas turbocharger.

Diese Aufgabe wird erfindungsgemäß durch einen Abgasturbolader der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.These The object is achieved by a Exhaust gas turbocharger of the o.g. Type with the characterized in claim 1 Characteristics solved. Advantageous embodiments of the invention are in the other claims described.

Dazu ist es bei einem Abgasturbolader der o.g. Art erfindungsgemäß vorgesehen, dass der Leitschaufelträger an einem axialen Ende über eine vorbestimmte axiale Breite einen stufenförmigen Absatz mit reduziertem Außendurchmesser aufweist, welcher derart kleiner ist als ein Innendurchmesser der radialen Innenfläche des Verstellringes, dass dieser Absatz die radiale Gleitlagerung des Verstellringes ausbildet.To it is in an exhaust gas turbocharger the o.g. Art provided according to the invention, that the vane carrier at one axial end over a predetermined axial width a stepped shoulder with reduced outer diameter which is smaller than an inner diameter of the radial palm of the adjusting ring, that this paragraph the radial plain bearing the adjusting ring forms.

Dies hat den Vorteil, dass die radiale Gleitlagerung mit durch die Stufenform einseitiger axialer Führung für den Verstellring in den Leitschaufelträger integriert ist, so dass sich durch diese Funktionsintegration eine Bauteilreduzierung mit entsprechend vereinfachter Montage ergibt.This has the advantage that the radial sliding bearing with through the step shape one-sided axial guidance for the Adjusting ring is integrated in the vane carrier, so that By this functional integration with a component reduction correspondingly simplified assembly results.

Zweckmäßigerweise ist die axiale Breite des Absatzes kleiner als eine axiale Breite des Verstellringes.Conveniently, the axial width of the shoulder is smaller than an axial width the adjusting ring.

In einer besonders bevorzugten Ausführungsform weist der Verstellring mehrere sich von seiner radialen Innenfläche radial nach innen erhebende radiale Führungsnasen, die in Umfangsrichtung voneinander beabstandete angeordnet sind, derart auf, dass die Führungsnasen radial auf dem Absatz des Leitschaufelträgers aufliegen und jeweilige Gleitlager ausbilden.In a particularly preferred embodiment the adjusting ring has several radially from its radial inner surface inwardly elevating radial guide tabs, which are arranged spaced apart in the circumferential direction, in such a way on that the guide noses rest radially on the shoulder of the vane support and respective Training plain bearings.

Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert. Diese zeigt in:The The invention will be explained in more detail below with reference to the drawing. These shows in:

1 einen Leitschaufelträger mit verstellbarer Turbinengeometrie (VTG) für einen erfindungsgemäßen Abgasturbolader in perspektivischer Ansicht und 1 a guide blade carrier with adjustable turbine geometry (VTG) for an exhaust gas turbocharger according to the invention in a perspective view and

2 den Leitschaufelträger gemäß 1 in perspektivischer, teilweise geschnittener Ansicht. 2 the guide vane according to 1 in perspective, partially sectioned view.

Eine variable Turbinengeometrie (VTG-Modul) für einen erfindungsgemäßen Abgasturbolader umfasst, wie aus 1 und 2 ersichtlich, einen Leitschaufelträger 10 an dem Leitschaufeln 12 an einer Seite in einem Ringspalt 14 angeordnet sind, wobei der Ringspalt 14 zwischen dem Leitschaufelträger 10 und einem Strömungskanalbauteil 16, welches auch als Trompete, Konturhülse oder Kartusche bezeichnet wird, um ein nicht dargestelltes Turbinenrad herum ausgebildet ist. Das Strömungskanalbauteil 16, der Leitschaufelträger 10 sowie zwischen diesen angeordnete Distanzhülsen 18 sind gemeinsam mittels Schrauben 20 an einem nicht dargestellten Lagergehäuse befestigt.A variable turbine geometry (VTG module) for an exhaust gas turbocharger according to the invention comprises, as shown in FIG 1 and 2 seen, a vane carrier 10 on the vanes 12 on one side in an annular gap 14 are arranged, wherein the annular gap 14 between the vane carrier 10 and a flow channel component 16 , which is also referred to as a trumpet, contour sleeve or cartridge, is formed around a turbine wheel, not shown. The flow channel component 16 , the vane carrier 10 and between these arranged spacers 18 are together by means of screws 20 attached to a bearing housing, not shown.

Jede Leitschaufel 12 weist eine an dieser drehfest befestigte Welle 22 auf, die sich durch den Leitschaufelträger 10 hindurch erstreckt. An der den Leitschaufeln 12 gegenüberliegenden Seite des Leitschaufelträgers 10 sind die Wellen 22 mit ihren freien Enden mit jeweiligen Verstellhebeln 24 drehfest verbunden. Diese Verstellhebel 24 greifen mit ihren freien, den Wellen 22 abgewandten Enden in entsprechende Ausnehmungen in einem Verstellring 26, welcher an derselben Seite des Leitschaufelträgers 10 wie die Verstellhebel 24 angeordnet ist. Der Verstellring 26 ist an seiner radialen Innenfläche mittels mehrerer, in diesem Beispiel mittels dreier, in Umfangsrichtung gleichmäßig voneinander beabstandeter, radialer Führungsnasen 28, welche sich von der Innenfläche des Verstellringes 26 radial nach innen erheben, auf einem stufenförmigen Absatz 30, welcher einstückig am Leitschaufelträger 10 ausgebildet ist, derart radial gelagert, dass der Verstellring 26 relativ zum Leitschaufelträger 10 verschwenkbar ist und dadurch über die Verstellhebel 24 die Leitschaufeln 12 kollektiv verschwenkt. Zum Verschwenken des Verstellringes 18 relativ zum Leitschaufelträger 10 ist ein entsprechender Aktuator (nicht dargestellt) vorgesehen.Each vane 12 has a shaft rotatably mounted on this 22 up, extending through the vane carrier 10 extends through. At the vanes 12 opposite side of the vane carrier 10 are the waves 22 with their free ends with respective adjusting levers 24 rotatably connected. These adjusting levers 24 grab with their free, the waves 22 opposite ends in corresponding recesses in an adjusting ring 26 which is on the same side of the vane carrier 10 like the lever 24 is arranged. The adjusting ring 26 is at its radial inner surface by means of several, in this example by means of three, circumferentially uniformly spaced, radial guide lugs 28 extending from the inner surface of the adjusting ring 26 Raise radially inwards, on a step-shaped heel 30 , which integrally on the guide vane 10 is formed, so radially mounted, that the adjusting ring 26 relative to the vane carrier 10 is pivotable and thereby on the lever 24 the vanes 12 pivoted collectively. For pivoting the adjusting ring 18 relative to the vane carrier 10 a corresponding actuator (not shown) is provided.

Der stufenförmige Absatz 30 ist derart ausgebildet, dass in radialer Richtung die radialen Führungsnasen 28 aufliegen und jeweilige, diskrete Gleitlager ausbilden. In axialer Richtung liegt der Verstellring 26 an einer Wandung 32 des stufenförmigen Absatzes 30 an, so dass der Absatz 30 neben der Funktion als radiales Gleitlager auch eine axiale Führung 32 für den Verstellring 26 zur Verfügung stellt.The step-shaped heel 30 is formed such that in the radial direction, the radial guide lugs 28 rest and form respective, discrete slide bearing. In the axial direction of the adjusting ring 26 on a wall 32 the step-shaped paragraph 30 on, leaving the paragraph 30 next to the Function as a radial plain bearing and an axial guidance 32 for the adjusting ring 26 provides.

In einer alternativen Weiterbildung kann der in dem dargestellten Beispiel in Umfangsrichtung durchgehende Absatz 30 auch in Umfangsrichtung unterbrochen und nur in dem Bereich ausgebildet sein, in dem die radialen Führungsnasen 28 auf dem Absatz 30 aufliegen bzw. im Schwenkbereich des Verstellringes 26 entlang des Absatzes 30 gleiten.In an alternative development of the paragraph in the illustrated example in the circumferential direction continuous paragraph 30 interrupted in the circumferential direction and be formed only in the region in which the radial guide lugs 28 on the heel 30 rest or in the swivel range of the adjusting ring 26 along the paragraph 30 slide.

Claims (4)

Abgasturbolader mit variabler Turbinengeometrie einer Brennkraftmaschine, insbesondere eines Kraftfahrzeuges, mit an einem Leitschaufelträger (10) schwenkbar angeordneten Leitschaufeln (12) einer Turbine, denen jeweils ein Verstellhebel (24) zugeordnet ist, und mit einem Verstellring (26), welcher mit den Verstellhebeln (24) zusammen wirkt und durch Drehung relativ zum Leitschaufelträger (10) eine Winkelstellung der Leitschaufeln (12) relativ zu einer Strömungsrichtung kollektiv für alle Leitschaufeln (12) verstellt, wobei der Verstellring (26) an seiner radialen Innenfläche mittels einer Gleitlagerung radial geführt ist, dadurch gekennzeichnet, dass der Leitschaufelträger (10) an einem axialen Ende über eine vorbestimmte axiale Breite einen stufenförmigen Absatz (30) mit reduziertem Außendurchmesser aufweist, welcher derart kleiner ist als ein Innendurchmesser der radialen Innenfläche des Verstellringes (26), dass dieser Absatz (30) die radiale Gleitlagerung des Verstellringes (26) ausbildet.Exhaust gas turbocharger with variable turbine geometry of an internal combustion engine, in particular of a motor vehicle, with a guide vane carrier ( 10 ) pivotally arranged guide vanes ( 12 ) of a turbine, each having an adjusting lever ( 24 ) and with an adjusting ring ( 26 ), which with the adjusting levers ( 24 ) cooperates and by rotation relative to the vane carrier ( 10 ) an angular position of the guide vanes ( 12 ) relative to a flow direction collectively for all vanes ( 12 ), wherein the adjusting ring ( 26 ) is radially guided on its radially inner surface by means of a sliding bearing, characterized in that the guide vane carrier ( 10 ) at an axial end over a predetermined axial width a step-shaped shoulder ( 30 ) having a reduced outer diameter, which is smaller than an inner diameter of the radially inner surface of the adjusting ring ( 26 ) that this paragraph ( 30 ) the radial sliding bearing of the adjusting ring ( 26 ) trains. Abgasturbolader nach Anspruch 1, dadurch gekennzeichnet, dass die axiale Breite des Absatzes (30) kleiner ist als eine axiale Breite des Verstellringes (26).Exhaust gas turbocharger according to claim 1, characterized in that the axial width of the shoulder ( 30 ) is smaller than an axial width of the adjusting ring ( 26 ). Abgasturbolader nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Verstellring (26) mehrere sich von seiner radialen Innenfläche radial nach innen erhebende radiale Führungsnasen (28), die in Umfangsrichtung voneinander beabstandete angeordnet sind, derart aufweist, dass die Führungsnasen (28) radial auf dem Absatz (30) des Leitschaufelträgers (10) aufliegen und jeweilige Gleitlager ausbilden.Exhaust gas turbocharger according to claim 1 or 2, characterized in that the adjusting ring ( 26 ) a plurality of radially inwardly extending from its radially inner surface inward radial guide lugs ( 28 ), which are arranged spaced apart in the circumferential direction, in such a way that the guide lugs ( 28 ) radially on the shoulder ( 30 ) of the vane carrier ( 10 ) rest and form respective plain bearings. Abgasturbolader nach Anspruch 3, dadurch gekennzeichnet, dass der Absatz (30) in Umfangsrichtung nur in denjenigen Bereichen ausgebildet ist, in denen die radialen Führungsnasen (28) entlang des Absatzes (30) gleiten.Exhaust gas turbocharger according to claim 3, characterized in that the shoulder ( 30 ) is formed in the circumferential direction only in those areas in which the radial guide lugs ( 28 ) along the paragraph ( 30 ) slide.
DE200410023282 2004-05-11 2004-05-11 Exhaust-gas turbocharger for motor vehicle, has guide vane carrier with cascaded section having reduced outer diameter, which is smaller than inner diameter of radial inner surface of ring, such that section forms radial plain bearing Withdrawn DE102004023282A1 (en)

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DE200410023282 DE102004023282A1 (en) 2004-05-11 2004-05-11 Exhaust-gas turbocharger for motor vehicle, has guide vane carrier with cascaded section having reduced outer diameter, which is smaller than inner diameter of radial inner surface of ring, such that section forms radial plain bearing

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DE200410023282 DE102004023282A1 (en) 2004-05-11 2004-05-11 Exhaust-gas turbocharger for motor vehicle, has guide vane carrier with cascaded section having reduced outer diameter, which is smaller than inner diameter of radial inner surface of ring, such that section forms radial plain bearing

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242645A (en) * 2011-07-21 2011-11-16 湖南天雁机械有限责任公司 Integral variable nozzle ring of turbocharger
US8186944B2 (en) * 2006-02-16 2012-05-29 Borgwarner Inc. Turbocharger comprising adjustable guide blades, blade lever and adjusting ring therefor
CN102661179A (en) * 2012-05-29 2012-09-12 湖南天雁机械有限责任公司 Variable nozzle ring positioning structure
CN102667100A (en) * 2009-11-27 2012-09-12 博格华纳公司 Turbocharger
EP2239425A3 (en) * 2009-04-10 2012-11-28 Honeywell International Inc. Variable geometry vane assembly for a turbocharger
CN101074611B (en) * 2006-05-18 2012-12-12 曼柴油机欧洲股份公司 Guider of exhaust gas turbocharger of piston type internal combustion engine using heavy oil as fuel
WO2013010817A1 (en) 2011-07-21 2013-01-24 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable turbine geometry

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020081194A1 (en) * 2000-10-12 2002-06-27 Garrett Stephen E. Turbine
EP1227221A2 (en) * 2001-01-24 2002-07-31 Mahle Gmbh Unison ring for a turbocharger
EP1398463A1 (en) * 2002-09-10 2004-03-17 Borg Warner Inc. Variable geometry guide vanes and turbocharger with these vanes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020081194A1 (en) * 2000-10-12 2002-06-27 Garrett Stephen E. Turbine
EP1227221A2 (en) * 2001-01-24 2002-07-31 Mahle Gmbh Unison ring for a turbocharger
EP1398463A1 (en) * 2002-09-10 2004-03-17 Borg Warner Inc. Variable geometry guide vanes and turbocharger with these vanes

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8186944B2 (en) * 2006-02-16 2012-05-29 Borgwarner Inc. Turbocharger comprising adjustable guide blades, blade lever and adjusting ring therefor
CN101074611B (en) * 2006-05-18 2012-12-12 曼柴油机欧洲股份公司 Guider of exhaust gas turbocharger of piston type internal combustion engine using heavy oil as fuel
EP2239425A3 (en) * 2009-04-10 2012-11-28 Honeywell International Inc. Variable geometry vane assembly for a turbocharger
US9017017B2 (en) 2009-04-10 2015-04-28 Honeywell Internatonal Inc. Variable-vane assembly having fixed guide pins for unison ring
CN102667100A (en) * 2009-11-27 2012-09-12 博格华纳公司 Turbocharger
CN102667100B (en) * 2009-11-27 2014-10-15 博格华纳公司 Turbocharger
CN102242645A (en) * 2011-07-21 2011-11-16 湖南天雁机械有限责任公司 Integral variable nozzle ring of turbocharger
WO2013010817A1 (en) 2011-07-21 2013-01-24 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable turbine geometry
DE102011079579A1 (en) 2011-07-21 2013-01-24 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable turbine geometry
CN102242645B (en) * 2011-07-21 2015-03-11 湖南天雁机械有限责任公司 Integral variable nozzle ring of turbocharger
CN102661179A (en) * 2012-05-29 2012-09-12 湖南天雁机械有限责任公司 Variable nozzle ring positioning structure
CN102661179B (en) * 2012-05-29 2015-05-20 湖南天雁机械有限责任公司 Variable nozzle ring positioning structure

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Effective date: 20110511