EP1635041A1 - Variable stator vanes for a turbocharger - Google Patents

Variable stator vanes for a turbocharger Download PDF

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Publication number
EP1635041A1
EP1635041A1 EP05019633A EP05019633A EP1635041A1 EP 1635041 A1 EP1635041 A1 EP 1635041A1 EP 05019633 A EP05019633 A EP 05019633A EP 05019633 A EP05019633 A EP 05019633A EP 1635041 A1 EP1635041 A1 EP 1635041A1
Authority
EP
European Patent Office
Prior art keywords
adjusting
adjusting ring
lever
bearing plate
bearing
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
EP05019633A
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German (de)
French (fr)
Other versions
EP1635041B1 (en
Inventor
Hermann Burmester
Christian Sleziona
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IHI Charging Systems International GmbH
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IHI Charging Systems International GmbH
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Publication of EP1635041A1 publication Critical patent/EP1635041A1/en
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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
    • 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
    • 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
    • F05D2230/61—Assembly methods using limited numbers of standard modules which can be adapted by machining
    • 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

Definitions

  • the invention relates to an adjusting device for guide vanes of an exhaust gas turbocharger according to the preamble of claim 1.
  • an exhaust gas turbocharger for an internal combustion engine which has a turbine with a variable turbine geometry for variable adjustment of the effective flow inlet cross section to the turbine wheel.
  • pivotally mounted guide vanes are provided in the flow inlet cross section in the turbine housing, which are adjustable by an adjusting device.
  • the adjusting device comprises an adjusting ring, which is rotatably mounted at its outer periphery by means of rollers in a housing ring.
  • the adjusting ring can be pivoted by an actuator in a limited rotation angle range by means of two levers which are connected to one another via a bearing journal.
  • an exhaust-gas turbocharger in which the guide vanes in the inflow cross-section of the exhaust-gas turbine can be adjusted by an adjusting device.
  • the adjusting device comprises an adjusting ring which, in the axial direction offset from a bearing plate in which the guide vanes are pivotably supported by an axis, is rotatably mounted on the inner circumference via rollers.
  • the rollers are cantilevered on bearing axles, which are arranged in a housing wall of the exhaust gas turbocharger.
  • On the free end of the axis of the vanes sits an adjusting lever which has a groove at its radially outward-facing end.
  • the invention has for its object to provide a compact, smooth-running adjusting device. It is achieved according to the invention by the features of claim 1. Further advantageous embodiments will be apparent from the dependent claims.
  • the adjusting ring of the adjusting device is mounted by means of bearing balls on the outer circumference of the bearing plate, wherein the bearing balls are guided in a ball cage.
  • the bearing balls, which run in ball raceways of the bearing plate and the adjusting ring are held by the ball cage at a distance and cause minimal friction losses.
  • the space is used optimally both in the radial and in the axial direction, especially if, according to one embodiment the invention, a drive lever rotatably seated on a drive shaft which is also rotatably mounted in the bearing plate and engages with its free end in a recess of the adjusting ring.
  • the drive lever can thus be arranged in the same plane as the adjusting lever, so that it does not require additional axial or radial space.
  • the adjusting lever and the drive lever are arranged in recesses of the bearing plate, which are open at the front and the periphery and allow a pivoting movement of the lever.
  • the bearing balls are provided in the region between the niches and are held by the ball cage in position, which is coupled by means of a built-in cage stop member to the movement of the adjusting lever and has recesses for the lever.
  • the ball cage has embossed spherical caps.
  • a lubricant film can build up on the contact surfaces between the bearing balls and the spherical caps during the movement.
  • An adjusting device 10 essentially comprises an adjusting ring 11, a plurality of adjusting levers 14 and a drive lever 28.
  • the adjusting ring 11 is mounted on the outer circumference of a bearing plate 18 by means of a plurality of bearing balls 20.
  • the bearing balls 20 run on the one hand in a ball track 25 of the bearing plate 18 and in a ball track 26 of the adjusting ring 11. They are guided by a ball cage 21 and kept at a distance. This has in the region of the bearing balls 20 embossed spherical caps 22nd
  • the adjusting ring 11 is driven by the drive lever 28, which sits at one end on a drive shaft 29 rotatably, which is rotatably mounted in the bearing plate 18.
  • the drive shaft 29 is actuated by an actuator, not shown.
  • the other end of the drive lever 28 engages with a head 15 in a corresponding recess 12 of the adjusting ring 11. In a pivoting movement of the drive lever 28 about the drive shaft 29 of the adjusting ring 11 is adjusted by a limited rotation angle range.
  • the adjusting lever 14 are distributed over the circumference of the bearing plate 18 and sit with a driving end 16 rotationally fixed, for example via a polygonal driving profile, on an axis 17 which is rotatably mounted in the bearing plate 18.
  • a vane is attached, which is not visible. If the axis 17 through the lever 14 pivoted, rotates in the same sense, the associated vane.
  • the free end of the adjusting lever 14 have heads 15 which engage in corresponding recesses 12 of the adjusting ring 11 and are thus entrained in an adjustment of the adjusting ring 11 and transmit the adjusting movement to the axes 17.
  • the adjusting lever 14 and the drive lever 28 are housed in niches 19 of the bearing plate 18. These are open to the front and the periphery and allow for sufficient pivotal movement of the lever 14, 28 to.
  • the niches 19 extend axially into the region of the ball track 25, so that the axial distance 27 between the center of the bearing ball 20 and the resulting point of application of the heads 15 of the adjusting lever 14 and the drive lever 28 is very small, whereby the 27 caused by the distance moments are also very small.
  • the bearing balls 20 move in areas 24 between two adjacent niches 19.
  • the bearing balls 20 can be brought from the niches 19 into position before the stop element 23 and thus the ball cage 21 is determined by the mounting of the adjusting lever 14 on the axes 17 in its position. So that the ball cage 21 does not impair the freedom of movement of the adjusting levers 14 and of the drive lever 28, it has corresponding recesses 30 in the area of the recesses 19 (FIG. 4).
  • the outer circumference 13 of the adjusting ring 11 between the recesses 12 is at least partially reduced in diameter. However, this is not expedient in the region of the drive lever 28 and the adjacent adjustment lever 14, in which the recesses 12 are very close to each other.

Abstract

The adjusting device (10) for guide vanes of an exhaust gas turbocharger has pivots (17) for the pivotable mounting of the vanes in a bearing plate (18), whereby the pivots are connected to adjusting levers (14) the free ends of which engage in cut-outs (12) in an adjusting ring (11). The adjusting ring is mounted on the circumference of the bearing plate by ball bearings (20) which are guided in a bearing cage (21). A drive lever (28) is seated on a drive shaft (29) which is rotatably mounted in the bearing plate and by its free end engages in one of the cut-outs in the adjusting ring.

Description

Die Erfindung betrifft eine Stelleinrichtung für Leitschaufeln eines Abgasturboladers nach dem Oberbegriff des Anspruchs 1.The invention relates to an adjusting device for guide vanes of an exhaust gas turbocharger according to the preamble of claim 1.

Aus der DE 100 35 762 A1 ist ein Abgasturbolader für eine Brennkraftmaschine bekannt, der eine Turbine mit einer variablen Turbinengeometrie zur veränderlichen Einstellung des wirksamen Strömungseintrittsquerschnitts zum Turbinenrad aufweist. Hierzu sind im Strömungseintrittsquerschnitt im Turbinengehäuse schwenkbar gelagerte Leitschaufeln vorgesehen, die durch eine Stelleinrichtung einstellbar sind. Die Stelleinrichtung umfasst einen Verstellring, der an seinem äußeren Umfang mittels Rollen in einem Gehäusering drehbar gelagert ist. Der Verstellring kann von einem Aktuator in einem begrenzten Drehwinkelbereich mittels zwei Hebel verschwenkt werden, die über einen Lagerzapfen miteinander verbunden sind.From DE 100 35 762 A1 an exhaust gas turbocharger for an internal combustion engine is known, which has a turbine with a variable turbine geometry for variable adjustment of the effective flow inlet cross section to the turbine wheel. For this purpose, pivotally mounted guide vanes are provided in the flow inlet cross section in the turbine housing, which are adjustable by an adjusting device. The adjusting device comprises an adjusting ring, which is rotatably mounted at its outer periphery by means of rollers in a housing ring. The adjusting ring can be pivoted by an actuator in a limited rotation angle range by means of two levers which are connected to one another via a bearing journal.

Am inneren Umfang des Verstellrings befinden sich Aussparungen, in denen Verstellhebel mit einem kugelförmigen Ende schwenkbar gelagert sind. Die Verstellhebel sitzen mit ihrem anderen Ende drehfest auf einer Lagerachse der Leitschaufeln. Beim Verschwenken des Verstellrings werden somit alle Leitschaufeln in gleicher Weise verstellt. Der Verstellmechanismus beansprucht in radialer Richtung einen relativ großen Bauraum. Ferner entstehen durch Gleitbewegungen an den Übertragungselementen Reibungskräfte, durch die der Verschleiß gefördert und der Wirkungsgrad reduziert wird.On the inner circumference of the adjusting ring are recesses in which adjusting lever are pivotally mounted with a spherical end. The adjusting lever sit with its other end against rotation on a bearing axis of the vanes. When pivoting the adjusting ring thus all vanes are adjusted in the same way. The adjustment claimed in the radial direction a relatively large space. Furthermore, caused by sliding movements on the transmission elements Frictional forces that promote wear and reduce efficiency.

Aus der US 2 860 827 ist ein Abgasturbolader bekannt, bei dem die Leitschaufeln im Zuströmquerschnitt der Abgasturbine durch eine Stelleinrichtung verstellbar sind. Die Stelleinrichtung umfasst einen Verstellring, der in axialer Richtung versetzt zu einer Lagerplatte, in der die Leitschaufeln durch eine Achse schwenkbar gelagert sind, am inneren Umfang über Rollen drehbar gelagert ist. Die Rollen sind fliegend auf Lagerachsen gelagert, die in einer Gehäusewand des Abgasturboladers angeordnet sind. Auf dem freien Ende der Achse der Leitschaufeln sitzt ein Verstellhebel, der an seinem radial nach außen weisenden Ende eine Nut besitzt. In diese greift ein axial gerichteter Stift, der in den Verstellring stirnseitig eingesetzt ist. Zwar benötigt die Stelleinrichtung einen geringeren radialen Bauraum, jedoch ist der erforderliche axiale Bauraum deutlich größer. Ferner verursachen die Übertragungselemente erhebliche Reibungsverluste und bewirken auf Grund ihrer axialen Abstände erhebliche Momente, die die Bauteile zusätzlich zu den notwendigen Übertragungskräften belasten.From US Pat. No. 2,860,827 an exhaust-gas turbocharger is known in which the guide vanes in the inflow cross-section of the exhaust-gas turbine can be adjusted by an adjusting device. The adjusting device comprises an adjusting ring which, in the axial direction offset from a bearing plate in which the guide vanes are pivotably supported by an axis, is rotatably mounted on the inner circumference via rollers. The rollers are cantilevered on bearing axles, which are arranged in a housing wall of the exhaust gas turbocharger. On the free end of the axis of the vanes sits an adjusting lever which has a groove at its radially outward-facing end. In this engages an axially directed pin which is inserted in the end face of the adjusting ring. Although the adjusting device requires a smaller radial space, but the required axial space is significantly larger. Furthermore, the transmission elements cause considerable friction losses and cause due to their axial distances considerable moments, which burden the components in addition to the necessary transmission forces.

Der Erfindung liegt die Aufgabe zugrunde, eine kompakt bauende, leichtgängige Stelleinrichtung zu schaffen. Sie wird gemäß der Erfindung durch die Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.The invention has for its object to provide a compact, smooth-running adjusting device. It is achieved according to the invention by the features of claim 1. Further advantageous embodiments will be apparent from the dependent claims.

Nach der Erfindung ist der Verstellring der Stelleinrichtung mittels Lagerkugeln am äußeren Umfang der Lagerplatte gelagert, wobei die Lagerkugeln in einem Kugelkäfig geführt sind. Die Lagerkugeln, die in Kugellaufbahnen der Lagerplatte und des Verstellrings laufen, werden durch den Kugelkäfig auf Distanz gehalten und verursachen minimale Reibungsverluste. Außerdem wird der Bauraum sowohl in radialer als auch in axialer Richtung optimal genutzt, zumal wenn gemäß einer Ausgestaltung der Erfindung ein Antriebshebel drehfest auf einer Antriebswelle sitzt, die ebenfalls in der Lagerplatte drehbar gelagert ist und mit seinem freien Ende in eine Aussparung des Verstellrings eingreift. Der Antriebshebel kann somit in der gleichen Ebene angeordnet werden wie die Verstellhebel, sodass er keinen zusätzlichen axialen oder radialen Bauraum beansprucht.According to the invention, the adjusting ring of the adjusting device is mounted by means of bearing balls on the outer circumference of the bearing plate, wherein the bearing balls are guided in a ball cage. The bearing balls, which run in ball raceways of the bearing plate and the adjusting ring are held by the ball cage at a distance and cause minimal friction losses. In addition, the space is used optimally both in the radial and in the axial direction, especially if, according to one embodiment the invention, a drive lever rotatably seated on a drive shaft which is also rotatably mounted in the bearing plate and engages with its free end in a recess of the adjusting ring. The drive lever can thus be arranged in the same plane as the adjusting lever, so that it does not require additional axial or radial space.

Nach einer weiteren Ausgestaltung der Erfindung sind die Verstellhebel und der Antriebshebel in Nischen der Lagerplatte angeordnet, die stirnseitig und zum Umfang hin offen sind und eine Schwenkbewegung der Hebel zulassen. Die Lagerkugeln sind dabei in den Bereich zwischen den Nischen vorgesehen und werden durch den Kugelkäfig in Position gehalten, der mittels eines in den Käfig integrierten Anschlagelements an die Bewegung der Verstellhebel gekoppelt ist und Aussparungen für die Hebel besitzt. Dadurch kann der axiale Bauraum ohne Vergrößerung des radialen Bauraums verkleinert werden. Hinzu kommt, dass der axiale Abstand zwischen dem Mittelpunkt der Lagerkugel und dem Angriffspunkt der Hebel sehr gering ist, wodurch sich nur sehr kleine, vernachlässigbare Momente ergeben, die das Reibverhalten der Stelleinrichtung kaum beeinträchtigen.According to a further embodiment of the invention, the adjusting lever and the drive lever are arranged in recesses of the bearing plate, which are open at the front and the periphery and allow a pivoting movement of the lever. The bearing balls are provided in the region between the niches and are held by the ball cage in position, which is coupled by means of a built-in cage stop member to the movement of the adjusting lever and has recesses for the lever. As a result, the axial space can be reduced without increasing the radial space. In addition, the axial distance between the center of the bearing ball and the point of application of the lever is very low, resulting in only very small, negligible moments, which hardly affect the friction behavior of the actuator.

Zur guten, reibungsarmen Führung der Lagerkugeln ist es zweckmäßig, dass der Kugelkäfig eingeprägte Kugelkalotten aufweist. Dadurch kann sich an den Kontaktflächen zwischen den Lagerkugeln und den Kugelkalotten bei der Bewegung ein Schmierfilm aufbauen.For good, low-friction guidance of the bearing balls, it is expedient that the ball cage has embossed spherical caps. As a result, a lubricant film can build up on the contact surfaces between the bearing balls and the spherical caps during the movement.

Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.
Dabei zeigen:

Fig. 1
eine schematische Seitenansicht einer erfindungsgemäßen Stelleinrichtung,
Fig. 2
einen vergrößerten Teilausschnitt der Seitenansicht nach Fig. 1,
Fig. 3
einen Teilschnitt entsprechend der Linie III-III in Fig. 2 und
Fig. 4
eine perspektivische Teilansicht auf den Umfang eines Kugelkäfigs mit einem geschnittenen Verstellring.
Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Showing:
Fig. 1
a schematic side view of an actuating device according to the invention,
Fig. 2
an enlarged partial section of the side view of FIG. 1,
Fig. 3
a partial section along the line III-III in Fig. 2 and
Fig. 4
a partial perspective view of the circumference of a ball cage with a cut adjusting ring.

Eine Stelleinrichtung 10 umfasst im Wesentlichen einen Verstellring 11, mehrere Verstellhebel 14 und einen Antriebshebel 28. Der Verstellring 11 ist mittels mehrerer Lagerkugeln 20 am äußeren Umfang einer Lagerplatte 18 gelagert. Die Lagerkugeln 20 laufen einerseits in einer Kugellaufbahn 25 der Lagerplatte 18 und in einer Kugellaufbahn 26 des Verstellrings 11. Sie werden durch einen Kugelkäfig 21 geführt und auf Abstand gehalten. Dieser besitzt im Bereich der Lagerkugeln 20 einprägte Kugelkalotten 22.An adjusting device 10 essentially comprises an adjusting ring 11, a plurality of adjusting levers 14 and a drive lever 28. The adjusting ring 11 is mounted on the outer circumference of a bearing plate 18 by means of a plurality of bearing balls 20. The bearing balls 20 run on the one hand in a ball track 25 of the bearing plate 18 and in a ball track 26 of the adjusting ring 11. They are guided by a ball cage 21 and kept at a distance. This has in the region of the bearing balls 20 embossed spherical caps 22nd

Der Verstellring 11 wird über den Antriebshebel 28 angetrieben, der mit einem Ende auf einer Antriebswelle 29 drehfest sitzt, die in der Lagerplatte 18 drehbar gelagert ist. Die Antriebswelle 29 wird von einem nicht dargestellten Aktuator betätigt. Das andere Ende des Antriebshebels 28 greift mit einem Kopf 15 in eine entsprechende Aussparung 12 des Verstellrings 11. Bei einer Schwenkbewegung des Antriebshebels 28 um die Antriebswelle 29 wird der Verstellring 11 um einen begrenzten Drehwinkelbereich verstellt.The adjusting ring 11 is driven by the drive lever 28, which sits at one end on a drive shaft 29 rotatably, which is rotatably mounted in the bearing plate 18. The drive shaft 29 is actuated by an actuator, not shown. The other end of the drive lever 28 engages with a head 15 in a corresponding recess 12 of the adjusting ring 11. In a pivoting movement of the drive lever 28 about the drive shaft 29 of the adjusting ring 11 is adjusted by a limited rotation angle range.

Die Verstellhebel 14 sind über den Umfang der Lagerplatte 18 verteilt und sitzen mit einem Mitnahmeende 16 drehfest, z.B. über ein polygonales Mitnahmeprofil, auf einer Achse 17, die drehbar in der Lagerplatte 18 gelagert ist. An dem anderen Ende der Achse 17 ist eine Leitschaufel befestigt, die jedoch nicht sichtbar ist. Wird die Achse 17 durch den Verstellhebel 14 geschwenkt, dreht sich im gleichen Sinne die zugehörige Leitschaufel.The adjusting lever 14 are distributed over the circumference of the bearing plate 18 and sit with a driving end 16 rotationally fixed, for example via a polygonal driving profile, on an axis 17 which is rotatably mounted in the bearing plate 18. At the other end of the shaft 17, a vane is attached, which is not visible. If the axis 17 through the lever 14 pivoted, rotates in the same sense, the associated vane.

Die freien Ende der Verstellhebel 14 besitzen Köpfe 15, die in entsprechende Aussparungen 12 des Verstellrings 11 eingreifen und so bei einer Verstellung des Verstellrings 11 mitgenommen werden und die Verstellbewegung auf die Achsen 17 übertragen.The free end of the adjusting lever 14 have heads 15 which engage in corresponding recesses 12 of the adjusting ring 11 and are thus entrained in an adjustment of the adjusting ring 11 and transmit the adjusting movement to the axes 17.

Die Verstellhebel 14 und der Antriebshebel 28 sind in Nischen 19 der Lagerplatte 18 untergebracht. Diese sind zur Stirnseite und zum Umfang hin offen und lassen eine ausreichende Schwenkbewegung der Hebel 14, 28 zu. Die Nischen 19 reichen axial bis in den Bereich der Kugellaufbahn 25, sodass der axiale Abstand 27 zwischen dem Mittelpunkt der Lagerkugel 20 und dem resultierenden Angriffspunkt der Köpfe 15 der Verstellhebel 14 und des Antriebshebels 28 sehr klein ist, wodurch die durch den Abstand 27 bedingten Momente ebenfalls sehr klein sind. Bei der Verstellung des Verstellrings 11 bewegen sich die Lagerkugeln 20 in Bereichen 24 jeweils zwischen zwei benachbarten Nischen 19. Sie werden in dieser Lage durch den Kugelkäfig 21 gehalten, der mittels eines in den Kugelkäfig 21 integrierten Anschlagelements 23 an die Bewegung der Verstellhebel 14 gekoppelt ist. Eine Ankoppelung des Kugelkäfigs 21 auf der Hälfte der wirksamen Länge der Verstellhebel 14 führt dazu, dass dem Kugelkäfig 21 über das Anschlagelement 23 genau die Umfangsgeschwindigkeit, nämlich die halbe Umfangsgeschwindigkeit des Verstellrings 11, mitgeteilt wird, die der Kugelkäfig 21 auch allein durch die Abwälzbewegung des Verstellrings 11 über die Lagerkugeln 20 auf der Lagerplatte 18 hätte. Dadurch wird die Reibung zwischen den Lagerkugeln 20 und dem Kugelkäfig 21 mit seinen Kugelkalotten 22 minimiert und es wird gewährleistet, dass zwischen dem Verstellring 11, den Lagerkugeln 20 und der Lagerplatte 18 ausschließlich Rollreibung auftritt. Bei der Montage können die Lagerkugeln 20 von den Nischen 19 aus in ihre Position gebracht werden, bevor das Anschlagelement 23 und damit der Kugelkäfig 21 durch die Montage der Verstellhebel 14 auf den Achsen 17 in seiner Lage bestimmt wird. Damit der Kugelkäfig 21 den Bewegungsfreiraum der Verstellhebel 14 und des Antriebshebels 28 nicht beeinträchtigt, besitzt er im Bereich der Nischen 19 entsprechende Aussparungen 30 (Fig. 4). Um die bei der Verstellung zu bewegenden Massen gering zu halten, ist der äußere Umfang 13 des Verstellrings 11 zwischen den Aussparungen 12 zumindest teilweise im Durchmesser reduziert. Dies ist jedoch nicht zweckmäßig in dem Bereich des Antriebshebels 28 und der benachbarten Verstellhebel 14, in dem die Aussparungen 12 sehr eng beieinander liegen.The adjusting lever 14 and the drive lever 28 are housed in niches 19 of the bearing plate 18. These are open to the front and the periphery and allow for sufficient pivotal movement of the lever 14, 28 to. The niches 19 extend axially into the region of the ball track 25, so that the axial distance 27 between the center of the bearing ball 20 and the resulting point of application of the heads 15 of the adjusting lever 14 and the drive lever 28 is very small, whereby the 27 caused by the distance moments are also very small. In the adjustment of the adjusting ring 11, the bearing balls 20 move in areas 24 between two adjacent niches 19. They are held in this position by the ball cage 21 which is coupled by means of a ball cage 21 integrated in the stop element 23 to the movement of the lever 14 , A coupling of the ball cage 21 on the half of the effective length of the adjusting lever 14 causes the ball cage 21 via the stop member 23 exactly the peripheral speed, namely half the peripheral speed of the adjusting 11, is communicated, the ball cage 21 alone by the rolling movement of the Adjusting ring 11 on the bearing balls 20 on the bearing plate 18 would have. As a result, the friction between the bearing balls 20 and the ball cage 21 with its spherical caps 22 is minimized and it is ensured that between the adjusting ring 11, the bearing balls 20 and the bearing plate 18 only rolling friction occurs. During assembly, the bearing balls 20 can be brought from the niches 19 into position before the stop element 23 and thus the ball cage 21 is determined by the mounting of the adjusting lever 14 on the axes 17 in its position. So that the ball cage 21 does not impair the freedom of movement of the adjusting levers 14 and of the drive lever 28, it has corresponding recesses 30 in the area of the recesses 19 (FIG. 4). In order to keep the moving masses during adjustment low, the outer circumference 13 of the adjusting ring 11 between the recesses 12 is at least partially reduced in diameter. However, this is not expedient in the region of the drive lever 28 and the adjacent adjustment lever 14, in which the recesses 12 are very close to each other.

Claims (5)

Stelleinrichtung (10) für Leitschaufeln eines Abgasturboladers, die mittels Achsen (17) in einer gehäusefesten Lagerplatte (18) schwenkbar gelagert sind, wobei die Achsen (17) drehfest mit Verstellhebeln (14) verbunden sind, deren freie Enden in Aussparungen (12) eines Verstellrings (11) eingreifen, der im Gehäuse mittels Wälzkörpern (20) drehbar gelagert ist und durch einen Antriebshebel (28) über einen begrenzten Drehwinkel verstellbar ist,
dadurch gekennzeichnet,
dass der Verstellring (11) mittels Lagerkugeln (20) am Umfang der Lagerplatte (18) gelagert ist und die Lagerkugeln (20) in einem Kugelkäfig (21) geführt sind.Control device (10) for guide vanes of an exhaust gas turbocharger, which are pivotally mounted by means of axes (17) in a housing-fixed bearing plate (18), wherein the axes (17) rotatably connected to Verstellhebeln (14) whose free ends in recesses (12) of a Adjusting ring (11) engage, which is rotatably mounted in the housing by means of rolling elements (20) and by a drive lever (28) is adjustable over a limited angle of rotation,
characterized,
that the adjusting ring (11) by means of bearing balls (20) is mounted on the circumference of the bearing plate (18) and the bearing balls (20) in a ball cage (21) are guided. Stelleinrichtung (10) nach Anspruch 1,
dadurch gekennzeichnet,
dass der Antriebshebel (28) drehfest auf einer Antriebswelle (29) sitzt, die in der Lagerplatte (18) drehbar gelagert ist, und mit seinem freien Ende in eine Aussparung (12) des Verstellrings (11) eingreift.Adjusting device (10) according to claim 1,
characterized,
that the drive lever (28) rotatably on a drive shaft (29) sits, which is rotatably mounted in the bearing plate (18) and engages with its free end in a recess (12) of the adjusting ring (11). Stelleinrichtung (10) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass die Verstellhebel (14) und der Antriebshebel (28) in Nischen (19) der Lagerplatte (18) angeordnet sind, die stirnseitig und zum Umfang hin offen sind und eine Schwenkbewegung der Hebel (14, 28) zulassen, wobei die Lagerkugeln (20) in Bereichen (24) zwischen den Nischen (19) vorgesehen sind und durch den Kugelkäfig (21) mit dessen Anschlagelement (23) positioniert werden, der durch die Anlenkung des Anschlagelements (23) auf der Hälfte der Länge der Verstellhebel (14) derart an die Bewegungsgeschwindigkeit der Verstellhebel (14) gekoppelt ist, dass sich die Lagerkugeln (20) und der Kugelkäfig (21) mit der Hälfte der Umfangsgeschwindigkeit des Verstellrings (11) bewegen, und Aussparungen (30) für die Hebel (14, 28) besitzt.Adjusting device (10) according to claim 1 or 2,
characterized,
in that the adjusting levers (14) and the drive lever (28) are arranged in recesses (19) of the bearing plate (18) which are open at the front and the periphery and permit pivoting movement of the levers (14, 28), the bearing balls (20 ) in areas (24) between the niches (19) are provided and are positioned by the ball cage (21) with its stop element (23) coupled by the articulation of the stop element (23) on half the length of the adjusting lever (14) to the movement speed of the adjusting lever (14) in that the bearing balls (20) and the ball cage (21) move at half the peripheral speed of the adjusting ring (11) and have recesses (30) for the levers (14, 28). Stelleinrichtung (10) nach Anspruch 3,
dadurch gekennzeichnet,
dass der Kugelkäfig (21) eingeprägte Kugelkalotten (22) aufweist, in denen die Lagerkugeln (20) geführt sind.Adjusting device (10) according to claim 3,
characterized,
that the ball cage (21) has embossed spherical caps (22) in which the bearing balls (20) are guided. Stelleinrichtung (10) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der äußere Umfang (13) des Verstellrings (11) mindestens teilweise zwischen den Aussparungen (12) im Durchmesser reduziert ist.Actuating device (10) according to one of the preceding claims,
characterized,
that the outer circumference (13) of the adjusting ring (11) is at least partially reduced in diameter between the recesses (12).
EP20050019633 2004-09-11 2005-09-09 Variable stator vanes for a turbocharger Expired - Fee Related EP1635041B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410043927 DE102004043927A1 (en) 2004-09-11 2004-09-11 Adjustment device for guide vanes of an exhaust gas turbocharger

Publications (2)

Publication Number Publication Date
EP1635041A1 true EP1635041A1 (en) 2006-03-15
EP1635041B1 EP1635041B1 (en) 2008-01-02

Family

ID=35455952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050019633 Expired - Fee Related EP1635041B1 (en) 2004-09-11 2005-09-09 Variable stator vanes for a turbocharger

Country Status (2)

Country Link
EP (1) EP1635041B1 (en)
DE (2) DE102004043927A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100014961A1 (en) * 2006-05-19 2010-01-21 Borgwarner Inc. Turbocharger
CN101074609B (en) * 2006-05-18 2011-04-06 曼柴油机欧洲股份公司 Guide for an axial inlet turbine of an exhaust gas turbocharger
ITCO20110034A1 (en) * 2011-08-31 2013-03-01 Nuovo Pignone Spa IGV COMPACT FOR APPLICATION IN TURBOESPANSORE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057663A1 (en) 2009-12-09 2011-06-16 Ihi Charging Systems International Gmbh Adjusting unit for exhaust-gas turbocharger of motor vehicle, has clamping element associated with connecting element, where connecting element is pretensioned in axial direction of adjusting shaft by clamping element
KR20110108205A (en) * 2010-03-26 2011-10-05 (주)계양정밀 Variable nozzle device of turbocharger
KR101174438B1 (en) * 2010-03-26 2012-08-16 (주)계양정밀 Variable nozzle device of turbocharger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860827A (en) 1953-06-08 1958-11-18 Garrett Corp Turbosupercharger
EP0226444A2 (en) * 1985-12-11 1987-06-24 AlliedSignal Inc. Variable nozzle turbocharger
DE10035762A1 (en) 2000-07-22 2002-01-31 Daimler Chrysler Ag Turbocharger for motor vehicle internal combustion engine has vanes to adjust flow through turbine and vary flow cross section
EP1394363A1 (en) * 2002-08-26 2004-03-03 BorgWarner Inc. Variable guide vane system for a turbine unit
DE10238412A1 (en) * 2002-08-22 2004-03-04 Volkswagen Ag Turbocharger with variable turbine geometry for IC engines has guide blade adjusting ring born in three inner radial bearings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860827A (en) 1953-06-08 1958-11-18 Garrett Corp Turbosupercharger
EP0226444A2 (en) * 1985-12-11 1987-06-24 AlliedSignal Inc. Variable nozzle turbocharger
DE10035762A1 (en) 2000-07-22 2002-01-31 Daimler Chrysler Ag Turbocharger for motor vehicle internal combustion engine has vanes to adjust flow through turbine and vary flow cross section
DE10238412A1 (en) * 2002-08-22 2004-03-04 Volkswagen Ag Turbocharger with variable turbine geometry for IC engines has guide blade adjusting ring born in three inner radial bearings
EP1394363A1 (en) * 2002-08-26 2004-03-03 BorgWarner Inc. Variable guide vane system for a turbine unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101074609B (en) * 2006-05-18 2011-04-06 曼柴油机欧洲股份公司 Guide for an axial inlet turbine of an exhaust gas 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
US20100014961A1 (en) * 2006-05-19 2010-01-21 Borgwarner Inc. Turbocharger
US8328520B2 (en) * 2006-05-19 2012-12-11 Borgwarner Inc. Turbocharger with separately formed vane lever stops
ITCO20110034A1 (en) * 2011-08-31 2013-03-01 Nuovo Pignone Spa IGV COMPACT FOR APPLICATION IN TURBOESPANSORE
EP2565388A3 (en) * 2011-08-31 2015-05-06 Nuovo Pignone S.p.A. Compact igv for turboexpander application
US9464533B2 (en) 2011-08-31 2016-10-11 Nuovo Pignone S.P.A Compact IGV for turboexpander application

Also Published As

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DE102004043927A1 (en) 2006-04-13
EP1635041B1 (en) 2008-01-02
DE502005002383D1 (en) 2008-02-14

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