EP1734231A1 - Turbocharger and nozzle mounting ring therefor - Google Patents

Turbocharger and nozzle mounting ring therefor Download PDF

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Publication number
EP1734231A1
EP1734231A1 EP20050013040 EP05013040A EP1734231A1 EP 1734231 A1 EP1734231 A1 EP 1734231A1 EP 20050013040 EP20050013040 EP 20050013040 EP 05013040 A EP05013040 A EP 05013040A EP 1734231 A1 EP1734231 A1 EP 1734231A1
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EP
European Patent Office
Prior art keywords
bearing ring
blade bearing
turbine housing
turbocharger
turbocharger according
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.)
Granted
Application number
EP20050013040
Other languages
German (de)
French (fr)
Other versions
EP1734231B1 (en
Inventor
Michael Stilgenbauer
Gerald Schall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BorgWarner Inc
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BorgWarner Inc
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Filing date
Publication date
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Priority to EP05013040.0A priority Critical patent/EP1734231B1/en
Publication of EP1734231A1 publication Critical patent/EP1734231A1/en
Application granted granted Critical
Publication of EP1734231B1 publication Critical patent/EP1734231B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00Regulating or controlling by varying flow
    • F01D17/10Final actuators
    • F01D17/12Final actuators arranged in stator parts
    • F01D17/14Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/165Final 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/246Fastening of diaphragms or stator-rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00Application
    • F05D2220/40Application in turbochargers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/60Assembly methods
    • F05D2230/64Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/30Retaining components in desired mutual position
    • F05D2260/33Retaining components in desired mutual position with a bayonet coupling

Definitions

  • the invention relates to a turbocharger according to the preamble of claim 1 and a blade bearing ring therefor according to the preamble of claim 11.
  • Such a turbocharger or such a blade bearing ring is from the EP 1 394 364 A1 known.
  • the vane ring is provided with spacers to maintain a clearance for the vanes of a baffle.
  • the spacers of the blade bearing ring are each provided with a bore for connecting bolts. In the assembled state, the connecting bolts pass through the holes and engage in a bearing ring of the turbine housing arranged adjacent to the blade bearing ring.
  • a kind of bayonet lock is possible, which is formed by a groove which is arranged on at least one of the spacers of the blade bearing ring and cooperates in the assembled state with a suitably designed and arranged web of the turbine housing.
  • An alternative preferred embodiment provides as a fastening means a radially aligned centering surface, which forms a press fit with a suitably arranged and formed counter surface of the turbine housing in the assembled state.
  • Radial alignment in this context means that the centering surface has radially inwardly with respect to the axis of rotation of the turbine rotor, wherein the mating surface of the turbine housing accordingly faces radially outward.
  • the fastener in forming the fastener as a press fit, it is also possible to provide additional axial securing of the vane ring by cooperating with a disc assembly disposed between the turbine housing and the bearing housing of the turbocharger.
  • This disc assembly can be formed in a particularly preferred embodiment by a arranged on the side of the bearing housing disc spring and a heat shield, the facing the turbine housing.
  • the turbine housing is formed of a material which has a low temperature resistance
  • an insert disk of particularly temperature-resistant material for protecting the guide vanes between the blade bearing ring and the turbine housing.
  • a turbocharger 1 according to the invention is shown, which has a turbine housing 2 and a compressor housing 3 connected thereto via a bearing housing 28.
  • the housings 2, 3 and 28 are arranged along a rotation axis R.
  • the turbine housing is shown partially in section to illustrate the arrangement of a vane ring 6 and a radially outer vane 18 formed therefrom which has a plurality of circumferentially spaced vanes 7 with pivot axes 8.
  • nozzle cross-sections are formed, which are larger or smaller depending on the position of the guide vanes 7 and apply more or less to the located in the middle of the axis of rotation R turbine rotor 4 with the supplied via a feed channel 9 and discharged via a central port 10 exhaust gas of an engine to drive via the turbine rotor 4 a seated on the same shaft compressor motor 17.
  • an actuating device 11 is provided.
  • a control housing 12 which controls the control movement of a ram member 14 attached to her to implement the movement thereof to a located behind the blade bearing ring 6 adjusting 5 in a slight rotational movement of the same.
  • a clearance 13 for the vanes 7 is formed between the vane ring 6 and an annular part 15 of the turbine housing 2.
  • the blade bearing ring 6 integrally formed spacers 16, which are shown in detail in FIGS. 2 and 3.
  • three spacers 16 at an angular distance of 120 ° at the periphery of Blade bearing ring 6 is arranged. In principle, it is possible to provide more or less such spacers 16, but results in the embodiment of FIG. 2 is a particularly advantageous geometric arrangement.
  • FIGS. 2 to 4 show an embodiment of the blade bearing ring 6, which has a fastening device 19 for fixing the blade bearing ring 6 on the turbine housing 2, which is arranged in one piece on at least one of the spacers 16.
  • the fastening device 19 has a groove 20 which is arranged between a, preferably cylindrically shaped, main part 22 of the spacer 16 and a centering shoulder 23.
  • the main part 22 is due to the one-piece design in the blade bearing ring 6 and the centering 23 is arranged at the free end of the spacer 16.
  • the centering shoulder 23 is provided with a shoulder relative to the main body 22 so that an axial contact surface 24 and a radially aligned centering surface or a centering diameter result adjacent to the groove 20.
  • a web 21 of the turbine housing 2 engages in the groove 20 and thus forms a bayonet-like closure device for fixing the blade bearing ring 6 on the turbine housing 2.
  • FIGS. 5 and 6 show an alternative embodiment of the turbocharger 1 according to the invention or the blade bearing ring 6 according to the invention.
  • This embodiment has a fastening device 19 ', which instead of a groove on at least one of the spacers 16 and a corresponding web on the turbine housing 2 has a radially aligned centering surface 26 on at least one of the spacers 16, in the assembled state shown in Figs. 5 and 6 interacts with a mating surface 27 of the turbine housing 2. By this interaction, a press fit in the radial direction is achieved, which is sufficient in principle to fix the blade bearing ring 6 on the turbine housing 2.
  • a projection 29 is provided which is arranged on an inner circumferential surface 30 of the blade bearing ring 6, which results in detail from FIGS. 5 and 6.
  • the projection 29 in this case has radially inward, ie in the direction of the axis of rotation R, and is arranged at the axial end 31 of the blade bearing ring 6, which is the spacers 16 adjacent.
  • This projection 29, which forms a radially encircling collar, cooperates with a disk arrangement 32, which is apparent above all from the enlarged representation of FIG. 6.
  • the disc assembly 32 has a conical disc spring 33 and a heat shield 34 disposed on the turbine housing 2 side is.
  • FIG. 7 is an embodiment of the turbocharger 1, which is intended for a low-temperature use, in which accordingly the material of the turbine housing 2 may have lower temperature resistance.
  • a high-temperature resistant insert 35 is provided between the blade bearing ring 6 and the turbine housing 2, which results in detail from the illustration of FIG. 7.

Abstract

The turbo charger has a turbine casing (2) with supply duct for the waste gases and a rotatable turbine rotor. A fixing device which fixes the blade bearing ring on the turbine casing is formed in one piece with at least one of the spacers (16) which maintain the clearance (13) for the blades of the guide grid which surrounds the rotor on the outside. The fixing device preferably has a groove in which a web (21) of the casing can be inserted when the ring is in the assembled state. For low temperature areas an insert disc of temperature-resistant material can be inserted between the ring and housing to protect the guide blades.

Description

Die Erfindung betrifft einen Turbolader gemäß dem Oberbegriff des Anspruches 1 sowie einen Schaufellagerring hierfür gemäß dem Oberbegriff des Anspruches 11.The invention relates to a turbocharger according to the preamble of claim 1 and a blade bearing ring therefor according to the preamble of claim 11.

Ein derartiger Turbolader bzw. ein derartiger Schaufellagerring ist aus der EP 1 394 364 A1 bekannt.Such a turbocharger or such a blade bearing ring is from the EP 1 394 364 A1 known.

Bei dieser Turboladerkonstruktion wird der Schaufellagerring mit Abstandshaltern zur Aufrechterhaltung eines Freiraumes für die Leitschaufeln eines Leitgitters versehen. Um den Schaufellagerring am Turbinengehäuse fixieren zu können, sind die Abstandshalter des Schaufellagerrings jeweils mit einer Bohrung für Verbindungsbolzen versehen. Im Montagezustand durchsetzen die Verbindungsbolzen die Bohrungen und greifen in einen benachbart zum Schaufellagerring angeordneten Lagerring des Turbinengehäuses ein.In this turbocharger design, the vane ring is provided with spacers to maintain a clearance for the vanes of a baffle. In order to fix the blade bearing ring on the turbine housing, the spacers of the blade bearing ring are each provided with a bore for connecting bolts. In the assembled state, the connecting bolts pass through the holes and engage in a bearing ring of the turbine housing arranged adjacent to the blade bearing ring.

Es ist demgegenüber Aufgabe der vorliegenden Erfindung, einen Turbolader gemäß dem Oberbegriff des Anspruches 1 bzw. einen Schaufellagerring gemäß dem Oberbegriff des Anspruches 11 zu schaffen, die eine Vereinfachung der Montage durch Reduzierung der zu montierenden Einzelteile ermöglichen.It is accordingly an object of the present invention to provide a turbocharger according to the preamble of claim 1 and a blade bearing ring according to the preamble of claim 11, which allow a simplification of assembly by reducing the items to be assembled.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruches 1 bzw. des Anspruches 11.The solution of this problem is achieved by the features of claim 1 and claim 11.

Durch die erfindungsgemäße einstückige Ausbildung der Befestigungseinrichtung zur Fixierung des Schaufellagerrings an den Abstandshaltern desselben ist es möglich, sowohl auf die Anbringung von Bohrungen in den Abstandshaltern als auch das Vorsehen und Montieren von separaten Verbindungsbolzen zu verzichten.As a result of the one-piece design of the fastening device according to the invention for fixing the blade bearing ring to the spacers, it is possible to dispense with the attachment of bores in the spacers as well as the provision and mounting of separate connecting bolts.

Vielmehr kann im Zuge der Anordnung des Schaufellagerrings dessen Fixierung durch Ineingriffbringen von Passflächen der Befestigungseinrichtung des Schaufellagerringes und entsprechender Gegenflächen am Turbinengehäuse erreicht werden.Rather, in the course of the arrangement of the blade bearing ring whose fixation can be achieved by engaging mating surfaces of the fastening device of the blade bearing ring and corresponding mating surfaces on the turbine housing.

Die Unteransprüche haben vorteilhafte Weiterbildungen der Erfindung zum Inhalt.The dependent claims have advantageous developments of the invention to the content.

Als eine Alternative für die erfindungsgemäße Befestigungseinrichtung ist eine Art Bajonettverschluss möglich, der durch eine Nut gebildet wird, die an zumindest einem der Abstandshalter des Schaufellagerrings angeordnet ist und im Montagezustand mit einem passend ausgebildeten und angeordneten Steg des Turbinengehäuses zusammenwirkt.As an alternative to the fastening device according to the invention a kind of bayonet lock is possible, which is formed by a groove which is arranged on at least one of the spacers of the blade bearing ring and cooperates in the assembled state with a suitably designed and arranged web of the turbine housing.

Eine alternative bevorzugte Ausführungsform sieht als Befestigungseinrichtung eine radial ausgerichtete Zentrierfläche vor, die im Montagezustand eine Presspassung mit einer geeignet angeordneten und ausgebildeten Gegenfläche des Turbinengehäuses bildet. Radiale Ausrichtung bedeutet in diesem Zusammenhang, dass die Zentrierfläche radial nach innen bezogen auf die Rotationsachse des Turbinenrotors weist, wobei die Gegenfläche des Turbinengehäuses dementsprechend radial nach außen weist.An alternative preferred embodiment provides as a fastening means a radially aligned centering surface, which forms a press fit with a suitably arranged and formed counter surface of the turbine housing in the assembled state. Radial alignment in this context means that the centering surface has radially inwardly with respect to the axis of rotation of the turbine rotor, wherein the mating surface of the turbine housing accordingly faces radially outward.

Bei der Ausbildung der Befestigungseinrichtung als Presspassung ist es ferner möglich, eine zusätzliche axiale Sicherung des Schaufellagerrings durch ein Zusammenwirken mit einer Scheibenanordnung zu bewirken, die zwischen dem Turbinengehäuse und dem Lagergehäuse des Turboladers angeordnet ist. Diese Scheibenanordnung kann bei einer besonders bevorzugten Ausführungsform durch eine auf der Seite des Lagergehäuses angeordnete Tellerfeder und einem Hitzeschild gebildet werden, der dem Turbinengehäuse zugewandt ist.In forming the fastener as a press fit, it is also possible to provide additional axial securing of the vane ring by cooperating with a disc assembly disposed between the turbine housing and the bearing housing of the turbocharger. This disc assembly can be formed in a particularly preferred embodiment by a arranged on the side of the bearing housing disc spring and a heat shield, the facing the turbine housing.

Für Anwendungen im Niedertemperaturbereich, bei dem das Turbinengehäuse aus einem Werkstoff ausgebildet ist, der eine geringe Temperaturbeständigkeit hat, ist es möglich, zwischen dem Schaufellagerring und dem Turbinengehäuse eine Einlegescheibe aus besonders temperaturfestem Material zum Schutz der Leitschaufeln anzuordnen.For applications in the low temperature range, in which the turbine housing is formed of a material which has a low temperature resistance, it is possible to arrange an insert disk of particularly temperature-resistant material for protecting the guide vanes between the blade bearing ring and the turbine housing.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus nachfolgender Beschreibung von Ausführungsbeispielen anhand der Zeichnungen.Further details, features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the drawings.

Es zeigt:

Fig. 1
eine teilweise im Schnitt dargestellte Perspektivansicht eines erfindungsgemäßen Turboladers,
Fig. 2
eine perspektivische Ansicht eines erfindungsgemäßen Schaufellagerrings,
Fig. 3
eine Teilansicht des Schaufellagerrings gemäß Fig. 2,
Fig. 4
eine Teilansicht des erfindungsgemäßen Turboladers zur Verdeutlichung des Montagezustandes des Schaufellagerrings gemäß der Fig. 2 und 3,
Fig. 5 und 6
der Fig. 4 entsprechende Darstellungen des erfindungsgemäßen Turboladers zur Verdeutlichung einer alternativen Ausführungsform des erfindungsgemäßen Schaufellagerrings, und
Fig. 7
eine der Fig. 5 entsprechende Darstellung eines Teiles des erfindungsgemäßen Turboladers zur Verdeutlichung einer weiteren Ausführungsform.
It shows:
Fig. 1
a partially sectioned perspective view of a turbocharger according to the invention,
Fig. 2
a perspective view of a blade bearing ring according to the invention,
Fig. 3
2 is a partial view of the blade bearing ring according to FIG. 2,
Fig. 4
2 shows a partial view of the turbocharger according to the invention for clarifying the mounting state of the blade bearing ring according to FIGS. 2 and 3,
FIGS. 5 and 6
4 corresponding representations of the turbocharger according to the invention to illustrate an alternative embodiment of the blade bearing ring according to the invention, and
Fig. 7
one of Fig. 5 corresponding representation of a Part of the turbocharger according to the invention to illustrate a further embodiment.

In Fig. 1 ist ein erfindungsgemäßer Turbolader 1 dargestellt, der ein Turbinengehäuse 2 und ein damit über ein Lagergehäuse 28 verbundenes Kompressorgehäuse 3 aufweist. Die Gehäuse 2, 3 und 28 sind entlang einer Rotationsachse R angeordnet. Das Turbinengehäuse ist teilweise im Schnitt gezeigt, um die Anordnung eines Schaufellagerrings 6 und ein von diesem gebildetes radial äußeres Leitgitter 18 zu verdeutlichen, das eine Mehrzahl von über den Umfang verteilten Leitschaufeln 7 mit Schwenkachsen 8 aufweist. Hierdurch werden Düsenquerschnitte gebildet, die je nach der Lage der Leitschaufeln 7 größer oder kleiner sind und den in der Mitte an der Rotationsachse R gelegenen Turbinenrotor 4 mehr oder weniger mit dem über einen Zuführkanal 9 zugeführten und über einen Zentralstutzen 10 abgeführten Abgas eines Motors beaufschlagen, um über den Turbinenrotor 4 einen auf derselben Welle sitzenden Kompressorrotor 17 anzutreiben.In Fig. 1, a turbocharger 1 according to the invention is shown, which has a turbine housing 2 and a compressor housing 3 connected thereto via a bearing housing 28. The housings 2, 3 and 28 are arranged along a rotation axis R. The turbine housing is shown partially in section to illustrate the arrangement of a vane ring 6 and a radially outer vane 18 formed therefrom which has a plurality of circumferentially spaced vanes 7 with pivot axes 8. As a result, nozzle cross-sections are formed, which are larger or smaller depending on the position of the guide vanes 7 and apply more or less to the located in the middle of the axis of rotation R turbine rotor 4 with the supplied via a feed channel 9 and discharged via a central port 10 exhaust gas of an engine to drive via the turbine rotor 4 a seated on the same shaft compressor motor 17.

Um die Bewegung bzw. die Lage der Leitschaufeln 7 zu steuern, ist eine Betätigungseinrichtung 11 vorgesehen. Diese kann an sich beliebig ausgebildet sein, jedoch weist eine bevorzugte Ausführungsform ein Steuergehäuse 12 auf, das die Steuerbewegung eines an ihr befestigten Stößelgliedes 14 steuert, um dessen Bewegung auf einen hinter dem Schaufellagerring 6 gelegenen Verstellring 5 in eine leichte Drehbewegung desselben umzusetzen. Zwischen dem Schaufellagerring 6 und einem ringförmigen Teil 15 des Turbinengehäuses 2 wird ein Freiraum 13 für die Leitschaufeln 7 gebildet. Um diesen Freiraum 13 sichern zu können, weist der Schaufellagerring 6 einstückig angeformte Abstandshalter 16 auf, die im Detail in Fig. 2 und 3 dargestellt sind. Im Beispielsfalle sind drei Abstandshalter 16 in einem Winkelabstand von jeweils 120° am Umfang des Schaufellagerrings 6 angeordnet. Vom Prinzip her ist es möglich, mehr oder weniger derartige Abstandshalter 16 vorzusehen, jedoch ergibt die Ausbildung gemäß Fig. 2 eine besonders vorteilhafte geometrische Anordnung.In order to control the movement or the position of the guide vanes 7, an actuating device 11 is provided. This can be designed to be arbitrary, but a preferred embodiment, a control housing 12, which controls the control movement of a ram member 14 attached to her to implement the movement thereof to a located behind the blade bearing ring 6 adjusting 5 in a slight rotational movement of the same. Between the vane ring 6 and an annular part 15 of the turbine housing 2, a clearance 13 for the vanes 7 is formed. In order to secure this clearance 13, the blade bearing ring 6 integrally formed spacers 16, which are shown in detail in FIGS. 2 and 3. In the example case, three spacers 16 at an angular distance of 120 ° at the periphery of Blade bearing ring 6 is arranged. In principle, it is possible to provide more or less such spacers 16, but results in the embodiment of FIG. 2 is a particularly advantageous geometric arrangement.

In den Fig. 2 bis 4 ist eine Ausführungsform des Schaufellagerrings 6 dargestellt, der eine Befestigungseinrichtung 19 zur Fixierung des Schaufellagerrings 6 am Turbinengehäuse 2 aufweist, die einstückig an zumindestens einem der Abstandshalter 16 angeordnet ist. Bei der in diesen Figuren dargestellten Ausführungsform weist die Befestigungseinrichtung 19 eine Nut 20 auf, die zwischen einem, vorzugsweise zylindrisch ausgebildeten, Hauptteil 22 des Abstandshalters 16 und einem Zentrierabsatz 23 angeordnet ist. Wie sich aus der Detailansicht der Fig. 3 ergibt, geht der Hauptteil 22 aufgrund der einstückigen Ausbildung in den Schaufellagerring 6 über und der Zentrierabsatz 23 ist am freien Ende des Abstandshalters 16 angeordnet. Durch das Anbringen der Nut 20 zwischen dem Hauptteil 22 und dem Zentrierabsatz 23 ergibt sich die aus Fig. 3 im Einzelnen ersichtliche Hakenform. Wie Fig. 3 ferner verdeutlicht, ist der Zentrierabsatz 23 gegenüber dem Hauptkörper 22 mit einem Absatz versehen, so dass sich benachbart zur Nut 20 eine axiale Anlagefläche 24 sowie eine radial ausgerichtete Zentrierfläche bzw. ein Zentrierdurchmesser ergeben.FIGS. 2 to 4 show an embodiment of the blade bearing ring 6, which has a fastening device 19 for fixing the blade bearing ring 6 on the turbine housing 2, which is arranged in one piece on at least one of the spacers 16. In the embodiment shown in these figures, the fastening device 19 has a groove 20 which is arranged between a, preferably cylindrically shaped, main part 22 of the spacer 16 and a centering shoulder 23. As can be seen from the detailed view of FIG. 3, the main part 22 is due to the one-piece design in the blade bearing ring 6 and the centering 23 is arranged at the free end of the spacer 16. By attaching the groove 20 between the main part 22 and the Zentrierabsatz 23 results in the apparent from Fig. 3 in detail hook shape. As further illustrated in FIG. 3, the centering shoulder 23 is provided with a shoulder relative to the main body 22 so that an axial contact surface 24 and a radially aligned centering surface or a centering diameter result adjacent to the groove 20.

Im in Fig. 4 dargestellten Montagezustand greift ein Steg 21 des Turbinengehäuses 2 in die Nut 20 ein und bildet damit eine bajonettähnliche Verschlusseinrichtung zur Fixierung des Schaufellagerrings 6 am Turbinengehäuse 2.In the assembled state shown in FIG. 4, a web 21 of the turbine housing 2 engages in the groove 20 and thus forms a bayonet-like closure device for fixing the blade bearing ring 6 on the turbine housing 2.

Hierzu und zur Ausbildung des Schaufellagerrings gemäß der Ausführungsformen der Fig. 2 bis 4 wird neben der schriftlichen Beschreibung explizit auf die zeichnerische Darstellung der genannten Figuren verwiesen.For this purpose and for the design of the blade bearing ring according to the embodiments of Figs. 2 to 4 is in addition to the written description explicitly to the graphic representation referenced figures.

In den Fig. 5 und 6 ist eine alternative Ausbildung des erfindungsgemäßen Turboladers 1 bzw. des erfindungsgemäßen Schaufellagerrings 6 dargestellt.FIGS. 5 and 6 show an alternative embodiment of the turbocharger 1 according to the invention or the blade bearing ring 6 according to the invention.

Diese Ausführungsform weist eine Befestigungseinrichtung 19' auf, die anstatt einer Nut an zumindestens einem der Abstandshalter 16 und einem korrespondierenden Steg am Turbinengehäuse 2 eine radial ausgerichtete Zentrierfläche 26 an zumindestens einem der Abstandshalter 16 aufweist, die im in den Fig. 5 und 6 dargestellten Montagezustand mit einer Gegenfläche 27 des Turbinengehäuses 2 zusammenwirkt. Durch dieses Zusammenwirken wird eine Presspassung in radialer Richtung erreicht, die vom Prinzip her dazu ausreicht, den Schaufellagerring 6 am Turbinengehäuse 2 zu fixieren.This embodiment has a fastening device 19 ', which instead of a groove on at least one of the spacers 16 and a corresponding web on the turbine housing 2 has a radially aligned centering surface 26 on at least one of the spacers 16, in the assembled state shown in Figs. 5 and 6 interacts with a mating surface 27 of the turbine housing 2. By this interaction, a press fit in the radial direction is achieved, which is sufficient in principle to fix the blade bearing ring 6 on the turbine housing 2.

Um die Fixierung zu unterstützen ist bei den in den Fig. 5 und 6 besonders bevorzugten Ausführungsform ferner ein Vorsprung 29 vorgesehen, der an einer Innenumfangsfläche 30 des Schaufellagerrings 6 angeordnet ist, was sich im Einzelnen aus den Fig. 5 und 6 ergibt.In order to assist the fixation, in the embodiment particularly preferred in FIGS. 5 and 6, a projection 29 is provided which is arranged on an inner circumferential surface 30 of the blade bearing ring 6, which results in detail from FIGS. 5 and 6.

Der Vorsprung 29 weist hierbei radial nach innen, also in Richtung auf die Rotationsachse R, und ist an dem axialen Ende 31 des Schaufellagerrings 6 angeordnet, das den Abstandshaltern 16 benachbart ist. Dieser Vorsprung 29, der einen radial umlaufenden Bund bildet, wirkt mit einer Scheibenanordnung 32 zusammen, was vor allem aus der vergrößerten Darstellung der Fig. 6 ersichtlich ist.The projection 29 in this case has radially inward, ie in the direction of the axis of rotation R, and is arranged at the axial end 31 of the blade bearing ring 6, which is the spacers 16 adjacent. This projection 29, which forms a radially encircling collar, cooperates with a disk arrangement 32, which is apparent above all from the enlarged representation of FIG. 6.

Bei der dargestellten Ausführungsform weist die Scheibenanordnung 32 eine konisch ausgebildete Tellerfeder 33 und einen Hitzeschild 34 auf, der auf Seiten des Turbinengehäuses 2 angeordnet ist.In the illustrated embodiment, the disc assembly 32 has a conical disc spring 33 and a heat shield 34 disposed on the turbine housing 2 side is.

Dadurch, dass die Scheibenanordnung 32 an ihrem radial äußeren Ende auf dem Vorsprung 29 aufliegt, ist es möglich, bei der Montage eine axiale Kraft F (siehe Fig. 5) aufzubringen, die eine zusätzliche axiale Verspannung des Schaufellagerrings 6 möglich macht. In Fig. 7 ist eine Anordnung dargestellt, die derjenigen der Fig. 5 und 6 weitestgehend entspricht, so dass auf die voranstehende Erläuterung Bezug genommen werden kann.Due to the fact that the disk arrangement 32 rests on the projection 29 at its radially outer end, it is possible during installation to apply an axial force F (see FIG. 5) which makes additional axial tensioning of the blade bearing ring 6 possible. In Fig. 7, an arrangement is shown, which largely corresponds to that of Figs. 5 and 6, so that reference can be made to the above explanation.

Es handelt sich bei der Fig. 7 jedoch um eine Ausführungsform des Turboladers 1, die für einen Niedertemperatureinsatz vorgesehen ist, bei der dementsprechend das Material des Turbinengehäuses 2 geringere Temperaturfestigkeit haben kann.However, FIG. 7 is an embodiment of the turbocharger 1, which is intended for a low-temperature use, in which accordingly the material of the turbine housing 2 may have lower temperature resistance.

Um jedoch die Leitschaufeln 7 schützen zu können, ist eine hochtemperaturfeste Einlegescheibe 35 zwischen dem Schaufellagerring 6 und dem Turbinengehäuse 2 vorgesehen, was sich im Einzelnen aus der Darstellung der Fig. 7 ergibt.However, in order to protect the guide vanes 7, a high-temperature resistant insert 35 is provided between the blade bearing ring 6 and the turbine housing 2, which results in detail from the illustration of FIG. 7.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Turboladerturbocharger
22
TubinengehäuseTubinengehäuse
33
Kompressorgehäusecompressor housing
44
Turbinenrotorturbine rotor
55
Verstellringadjusting
66
SchaufellagerringNozzle ring
77
Leitschaufelnvanes
88th
Schwenkachsenswiveling axes
99
Zuführkanalfeed
1010
AxialstutzenAxialstutzen
1111
Betätigungseinrichtungactuator
1212
Steuergehäusecontrol housing
1313
Freiraum für Leitschaufeln 7Free space for vanes 7
1414
Stößelgliedplunger member
1515
ringförmiger Teil des Turbinengehäuses 2annular part of the turbine housing 2
1616
Abstandshalter/DistanznockenSpacer / spacer cams
1717
Kompressorrotorcompressor rotor
1818
Leitgitterguide grid
1919
Befestigungseinrichtungfastening device
2020
Nutgroove
2121
Stegweb
2222
HauptteilBulk
2323
Zentrierabsatzcentering
2424
axiale Anlageflächeaxial contact surface
2525
Zentrierfläche bzw. Zentrierdurchmesser des AbstandshaltersCentering or centering diameter of the spacer
2626
Zentrierflächecentering
2727
Gegenflächecounter surface
2828
Lagergehäusebearing housing
2929
Vorsprunghead Start
3030
InnenumfangsflächeInner circumferential surface
3131
axiales Endeaxial end
3232
Scheibenanordnungdisk assembly
3333
TellerfederBelleville spring
3434
Hitzeschildheat shield
3535
Einlegescheibeinsert disc
RR
Rotationsachseaxis of rotation
FF
axiale Vorspannkraftaxial preload force

Claims (11)

Turbolader (1) mit variabler Turbinengeometrie (VTG) - mit einem Turbinengehäuse (2) mit einem Zuführkanal (9) für Abgase; - mit einem Turbinenrotor (4), der drehbar im Turbinengehäuse (2) gelagert ist; - mit einem Leitgitter (18) variabler Turbinengeometrie, das den Turbinenrotor (4) radial außen umgibt und einen Schaufellagerring (6) aufweist, der mit Abstandshaltern (16) zur Aufrechterhaltung eines Freiraumes (13) für Leitschaufeln (7) des Leitgitters (18) versehen ist; und - mit einer Befestigungseinrichtung (19; 19') zur Fixierung des Schaufellagerrings (6) am Turbinengehäuse (2), dadurch gekennzeichnet, - dass die Befestigungseinrichtung (19; 19') einstückig an zumindestens einem der Abstandshalter (16) angeformt ist. Turbocharger (1) with Variable Turbine Geometry (VTG) - With a turbine housing (2) with a feed channel (9) for exhaust gases; - With a turbine rotor (4) which is rotatably mounted in the turbine housing (2); - With a guide grid (18) of variable turbine geometry, which surrounds the turbine rotor (4) radially outside and a blade bearing ring (6) with spacers (16) for maintaining a free space (13) for guide vanes (7) of the guide grid (18) is provided; and - with a fastening device (19, 19 ') for fixing the blade bearing ring (6) on the turbine housing (2), characterized, - That the fastening means (19, 19 ') is integrally formed on at least one of the spacers (16). Turbolader nach Anspruch 1, dadurch gekennzeichnet, dass die Befestigungseinrichtung (19) eine Nut (20) aufweist, in die im Montagezustand des Schaufellagerrings (6) ein Steg (21) des Turbinengehäuses (2) einsetzbar ist.Turbocharger according to claim 1, characterized in that the fastening device (19) has a groove (20) into which a web (21) of the turbine housing (2) can be inserted in the assembled state of the vane bearing ring (6). Turbolader nach Anspruch 2 dadurch gekennzeichnet, dass die Nut zwischen einem am Schaufellagerring (6) einstückig angeformten Hauptteil (22) des Abstandshalters (16) und einem am freien Ende des Abstandshalters (16) angeordneten Zentrierabsatz (23) angeordnet ist.Turbocharger according to claim 2, characterized in that the groove between a blade on the bearing ring (6) integrally formed main part (22) of the spacer (16) and arranged at the free end of the spacer (16) centering shoulder (23) is arranged. Turbolader nach Anspruch 3, dadurch gekennzeichnet, dass der Hauptteil (22) eine axiale Anlagefläche (24) benachbart zur Nut (20) aufweist.Turbocharger according to claim 3, characterized in that the main part (22) has an axial bearing surface (24) adjacent to the groove (20). Turbolader nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Zentrierabsatz (23) eine radial ausgebildete Zentrierfläche (25) benachbart zur Nut (20) aufweist.Turbocharger according to claim 3 or 4, characterized in that the centering shoulder (23) has a radially formed centering surface (25) adjacent to the groove (20). Turbolader nach Anspruch 1, dadurch gekennzeichnet, dass die Befestigungseinrichtung (19') als radial ausgerichtete Zentrierfläche (26) ausgebildet ist, die im Montagezustand des Schaufellagerrings (6) eine Presspassung mit einer Gegenfläche (27) des Turbinengehäuses (2) bildet.Turbocharger according to claim 1, characterized in that the fastening device (19 ') is designed as a radially aligned centering surface (26) which forms a press fit with a counter surface (27) of the turbine housing (2) in the assembled state of the blade bearing ring (6). Turbolader nach Anspruch 6, dadurch gekennzeichnet, dass der Schaufellagerring (6) einen radial nach innen vorstehenden Vorsprung (29) an seiner Innenumfangsfläche (30) aufweist.Turbocharger according to claim 6, characterized in that the blade bearing ring (6) has a radially inwardly projecting projection (29) on its inner peripheral surface (30). Turbolader nach Anspruch 7, dadurch gekennzeichnet, dass der Vorsprung (29) an dem den Abstandshaltern (16) benachbarten axialen Ende (31) des Schaufellagerrings (6) angeordnet ist.Turbocharger according to claim 7, characterized in that the projection (29) on the spacers (16) adjacent to the axial end (31) of the blade bearing ring (6) is arranged. Turbolader nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der Vorsprung (29) im Montagezustand des Schaufellagerrings (6) mit einer Scheibenanordnung (32), vorzugsweise bestehend aus einer Tellerfeder (33) und einem dem Turbinengehäuse (2) zugewandten Hitzeschild (34), zur Bildung einer axialen Verspannung des Schaufellagerrings (6) zwischen Lagergehäuse (28) und Turbinengehäuse (2) zusammenwirkt.Turbocharger according to claim 7 or 8, characterized in that the projection (29) in the assembled state of the blade bearing ring (6) with a disc assembly (32), preferably consisting of a plate spring (33) and a turbine housing (2) facing heat shield (34) , cooperates to form an axial clamping of the blade bearing ring (6) between the bearing housing (28) and the turbine housing (2). Turbolader nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass zwischen dem Turbinengehäuse (2) und dem Schaufellagerring (6) eine Einlegescheibe (35) angeordnet ist.Turbocharger according to one of claims 1 to 9, characterized in that between the turbine housing (2) and the blade bearing ring (6) an insert disc (35) is arranged. Schaufellagerring (6) für einen Turbolader (1) gemäß dem Oberbegriff des Anspruchs 1, gekennzeichnet durch wenigstens eines der Merkmale der Ansprüche 1 bis 10.Blade bearing ring (6) for a turbocharger (1) according to the preamble of claim 1, characterized by at least one of the features of claims 1 to 10.
EP05013040.0A 2005-06-16 2005-06-16 Turbocharger with variable geometry turbine Expired - Fee Related EP1734231B1 (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008098024A2 (en) * 2007-02-08 2008-08-14 Honeywell International Inc. Method for manufacturing a variable-vane mechanism for a turbocharger
WO2009076062A2 (en) 2007-12-12 2009-06-18 Honeywell International Inc. Variable nozzle for a turbocharger, having nozzle ring located by radial members
DE102008020932A1 (en) * 2008-04-25 2009-10-29 Continental Automotive Gmbh Turbocharger, particularly for motor vehicle, has variable turbine geometry unit and one or multiple fastening elements for fastening variable turbine geometry unit in housing of turbocharger
WO2010040643A1 (en) * 2008-10-09 2010-04-15 Continental Automotive Gmbh Turbocharger having fastening elements for fastening blade bearing rings of a variable turbine geometry vtg
DE102008014680A1 (en) 2008-03-18 2010-09-23 Continental Automotive Gmbh Leitgitteranordnung an exhaust gas turbocharger, exhaust gas turbocharger and method for producing a Leitgitteranordnung
WO2011069571A1 (en) * 2009-12-10 2011-06-16 Daimler Ag Turbine for a supercharger device, and method for mounting a turbine of this type
KR20110068847A (en) 2009-12-16 2011-06-22 보르그워너 인코퍼레이티드 Exhaust-gas turbocharger
EP2336495A1 (en) 2009-12-16 2011-06-22 BorgWarner, Inc. Exhaust gas turbo charger
DE102011005151A1 (en) * 2011-03-04 2012-09-06 Bayerische Motoren Werke Aktiengesellschaft Exhaust turbocharger for internal combustion engine, has water turbine distributor for variable turbine geometry, where water turbine distributor has two swiveling guide vanes between two parallel, annular slide walls
WO2013072732A1 (en) * 2011-11-16 2013-05-23 Toyota Jidosha Kabushiki Kaisha Turbocharger
US8662833B2 (en) 2008-01-21 2014-03-04 Bosch Mahle Turbo Systems Gmbh & Co. Kg Turbocharger with variable turbine geometry
US20150198164A1 (en) * 2014-01-15 2015-07-16 General Electric Company Rotary machine having a volute assembly-bearing housing joint with interlocking teeth
USD777212S1 (en) 2015-06-20 2017-01-24 General Electric Company Nozzle ring
WO2020001805A1 (en) * 2018-06-27 2020-01-02 Ihi Charging Systems International Gmbh Turbocharger with centered guide blade ring
DE102008029080B4 (en) 2008-06-19 2022-04-21 BMTS Technology GmbH & Co. KG Exhaust gas turbocharger for a motor vehicle

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JP7424752B2 (en) 2019-03-25 2024-01-30 株式会社豊田自動織機 turbo charger

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008098024A3 (en) * 2007-02-08 2008-10-23 Honeywell Int Inc Method for manufacturing a variable-vane mechanism for a turbocharger
WO2008098024A2 (en) * 2007-02-08 2008-08-14 Honeywell International Inc. Method for manufacturing a variable-vane mechanism for a turbocharger
CN101743382B (en) * 2007-02-08 2013-05-22 霍尼韦尔国际公司 Method for manufacturing a variable-vane mechanism for a turbocharger
US7918023B2 (en) 2007-02-08 2011-04-05 Honeywell International Inc. Method for manufacturing a variable-vane mechanism for a turbocharger
WO2009076062A2 (en) 2007-12-12 2009-06-18 Honeywell International Inc. Variable nozzle for a turbocharger, having nozzle ring located by radial members
WO2009076062A3 (en) * 2007-12-12 2010-01-21 Honeywell International Inc. Variable nozzle for a turbocharger, having nozzle ring located by radial members
US8480358B2 (en) 2007-12-12 2013-07-09 Honeywell International Inc. Variable nozzle for a turbocharger, having nozzle ring located by radial members
CN101896692A (en) * 2007-12-12 2010-11-24 霍尼韦尔国际公司 Variable nozzle for a turbocharger, having nozzle ring located by radial members
CN101896692B (en) * 2007-12-12 2014-03-12 霍尼韦尔国际公司 Variable nozzle for turbocharger, having nozzle ring located by radial members
US8662833B2 (en) 2008-01-21 2014-03-04 Bosch Mahle Turbo Systems Gmbh & Co. Kg Turbocharger with variable turbine geometry
DE102008014680A1 (en) 2008-03-18 2010-09-23 Continental Automotive Gmbh Leitgitteranordnung an exhaust gas turbocharger, exhaust gas turbocharger and method for producing a Leitgitteranordnung
DE102008020932A1 (en) * 2008-04-25 2009-10-29 Continental Automotive Gmbh Turbocharger, particularly for motor vehicle, has variable turbine geometry unit and one or multiple fastening elements for fastening variable turbine geometry unit in housing of turbocharger
DE102008020932B4 (en) * 2008-04-25 2010-09-23 Continental Automotive Gmbh Turbocharger with a variable turbine geometry device
DE102008029080B4 (en) 2008-06-19 2022-04-21 BMTS Technology GmbH & Co. KG Exhaust gas turbocharger for a motor vehicle
CN102177312A (en) * 2008-10-09 2011-09-07 欧陆汽车有限责任公司 Turbocharger having fastening elements for fastening blade bearing rings of a variable turbine geometry VTG
WO2010040643A1 (en) * 2008-10-09 2010-04-15 Continental Automotive Gmbh Turbocharger having fastening elements for fastening blade bearing rings of a variable turbine geometry vtg
CN102177312B (en) * 2008-10-09 2015-04-29 大陆汽车有限公司 Turbocharger having fastening elements for fastening blade bearing rings of a variable turbine geometry VTG
US8764389B2 (en) 2008-10-09 2014-07-01 Continental Automotive Gmbh Turbocharger having fastening elements for fastening vane bearing rings of a variable turbine geometry VTG
WO2011069571A1 (en) * 2009-12-10 2011-06-16 Daimler Ag Turbine for a supercharger device, and method for mounting a turbine of this type
EP2336495A1 (en) 2009-12-16 2011-06-22 BorgWarner, Inc. Exhaust gas turbo charger
KR20110068847A (en) 2009-12-16 2011-06-22 보르그워너 인코퍼레이티드 Exhaust-gas turbocharger
DE102009058411A1 (en) 2009-12-16 2011-06-22 BorgWarner Inc., Mich. turbocharger
DE102011005151A1 (en) * 2011-03-04 2012-09-06 Bayerische Motoren Werke Aktiengesellschaft Exhaust turbocharger for internal combustion engine, has water turbine distributor for variable turbine geometry, where water turbine distributor has two swiveling guide vanes between two parallel, annular slide walls
WO2013072732A1 (en) * 2011-11-16 2013-05-23 Toyota Jidosha Kabushiki Kaisha Turbocharger
US20150198164A1 (en) * 2014-01-15 2015-07-16 General Electric Company Rotary machine having a volute assembly-bearing housing joint with interlocking teeth
US9909589B2 (en) * 2014-01-15 2018-03-06 General Electric Company Rotary machine having a volute assembly-bearing housing joint with interlocking teeth
USD777212S1 (en) 2015-06-20 2017-01-24 General Electric Company Nozzle ring
WO2020001805A1 (en) * 2018-06-27 2020-01-02 Ihi Charging Systems International Gmbh Turbocharger with centered guide blade ring
CN112292511A (en) * 2018-06-27 2021-01-29 Ihi供应系统国际有限责任公司 Exhaust-gas turbocharger with a centered guide vane ring
US11220957B2 (en) 2018-06-27 2022-01-11 Ihi Charging Systems International Gmbh Exhaust gas turbocharger

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