EP2500526B1 - Adjustment ring of a charging device - Google Patents

Adjustment ring of a charging device Download PDF

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Publication number
EP2500526B1
EP2500526B1 EP12154460.5A EP12154460A EP2500526B1 EP 2500526 B1 EP2500526 B1 EP 2500526B1 EP 12154460 A EP12154460 A EP 12154460A EP 2500526 B1 EP2500526 B1 EP 2500526B1
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EP
European Patent Office
Prior art keywords
adjusting ring
flanks
recess
blade
variable turbine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12154460.5A
Other languages
German (de)
French (fr)
Other versions
EP2500526A1 (en
Inventor
Thomas Streich
Jochen Laubender
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.)
BMTS Technology GmbH and Co KG
Original Assignee
Bosch Mahle Turbo Systems GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bosch Mahle Turbo Systems GmbH and Co KG filed Critical Bosch Mahle Turbo Systems GmbH and Co KG
Publication of EP2500526A1 publication Critical patent/EP2500526A1/en
Application granted granted Critical
Publication of EP2500526B1 publication Critical patent/EP2500526B1/en
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Anticipated expiration legal-status Critical

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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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/16—Two-dimensional parabolic
    • 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
    • F05D2250/00—Geometry
    • F05D2250/70—Shape
    • F05D2250/71—Shape curved

Definitions

  • the present invention relates to an adjusting ring for a variable turbine and / or compressor geometry, according to the preamble of claim 1.
  • the invention also relates to a variable turbine and / or compressor geometry with such an adjusting ring.
  • the invention further relates to a charging device, in particular an exhaust gas turbocharger, with a variable turbine and / or compressor geometry of the type mentioned.
  • variable turbine and / or compressor geometry is a common technique for power control of a charging device, in particular an exhaust gas turbocharger, at different gas flow rates.
  • an adjusting ring is provided with recesses, which identify two substantially parallel lateral edges, wherein the recesses receive blade lever heads of blade levers.
  • the blade lever heads are moved by contact with the flanks of the recesses of the adjusting ring, resulting in a rotation of arranged on a blade bearing ring guide vanes, which are non-rotatably connected via a blade bearing journal with the blade lever leads.
  • the cross section opened by the guide vanes is reduced.
  • the cross section available through the vanes is increased.
  • the disadvantage here is that a gap between the blade lever heads and the associated edge can arise, which has an inertia of the variable turbine and / or compressor geometry result.
  • a false transfer of an adjusting force via the flanks to the corresponding blade lever heads leads to the formation of a friction, which likewise contributes to the inertia of the variable turbine and / or compressor geometry.
  • the inertia leads, in particular during load changes or changes in the Power requirement by the charging device, to a delayed reaction time or a hysteresis and thus a reduction in performance of the charging device.
  • Generic adjusting rings are for example from the DE 10 2007 022 356 A1 and the DE 10 2004 023 209 A1 known.
  • the present invention therefore deals with the problem of providing an improved embodiment for an adjusting ring of the generic type, which contributes in particular to eliminating or at least reducing the hysteresis behavior of the variable turbine and / or compressor geometry.
  • the present invention is based on the general idea, in an adjusting ring of a variable turbine and / or compressor geometry of a charging device, wherein the adjusting ring inwardly directed recesses for receiving blade lever heads of blade levers and each shot has two flanks, the flanks of at least one Auf broadly directed recesses for receiving blade lever heads of blade levers and each shot has two flanks, the flanks of at least one Auf broadly directed recesses for receiving blade lever heads of blade levers and each shot has two flanks, the flanks of at least one Aufstreamlinedung be designed so that the blade lever heads and at least one of the flanks of the associated recess, for any position of the associated vane and thus the blade lever heads, have a contact.
  • the flanks are designed such that a transfer of an adjusting force via the flanks to the corresponding blade lever heads is optimized.
  • the invention uses the knowledge that a gap between a blade lever head and the edge of the associated recess of the adjusting ring at certain positions of the adjusting ring and thus the blade lever heads, caused by the parallel arrangement of the flanks of a recess. Also a caused by an unfavorable transmission of the adjusting friction between blade lever head and flank is particularly caused by the parallel arrangement of the flanks, which allow optimum transfer of the adjusting only at certain adjustment positions of the adjusting ring and thus at certain positions of the blade lever head.
  • at least one flank of at least one recess has a curved shape, in particular a parabolic shape, on or both flanks of a recess have a predefined deviation from a parallel arrangement.
  • the angle of curvature of the curved flanks can in particular have a dependence on a nominal diameter of the blade lever head.
  • the curved shape of the flank serves in particular the purpose of ensuring contact between the blade lever head and this flank for arbitrary positions of the guide vanes and thus of the blade lever head.
  • these embodiments of the flank serve the purpose of optimizing an adjusting force transmitted by the flank to the blade lever head such that the friction between flank and blade lever head is at least reduced.
  • the flanks of a recess are formed such that they have a predetermined deviation from a parallel arrangement.
  • the flanks are accordingly designed such that they are arranged, for example, obliquely to each other.
  • Such an arrangement also serves in particular for the purpose of ensuring contact between the blade lever head and the corresponding flank / flanks for any desired positions of the guide blades and thus of the blade lever head.
  • this embodiment of the flanks serves the purpose of optimizing an adjusting force transmitted by the flank to the blade lever head such that the friction between flank and blade lever head is at least minimized.
  • flanks of a recess which have a deviation from a parallel arrangement, are designed such that at least one of the flanks extends in a radial plane of the adjusting ring.
  • both flanks of a recess can lie in a radial plane.
  • a further advantageous embodiment has flanks of at least one recess, which are arranged in mirror image to each other.
  • flanks which are mirrored relative to one another with respect to a radial plane of the adjusting ring running in their middle.
  • the flanks are thus designed in particular in the case of a curved shape of the respective flanks such that they provide the same, but mirrored, receptacle on both sides of the associated recess.
  • a bottom of the recess has a curved shape in addition to the already mentioned embodiments.
  • the reason may be rounded, for example, to prevent in particular a friction of the blade lever head with the bottom of the associated recess.
  • the adjusting ring is integrated in a variable turbine and / or compressor geometry.
  • the blade levers are connected by blade lever pin with a blade bearing ring, wherein guide vanes are rotatably coupled to the blade lever pivot.
  • the flanks of the adjusting ring are designed such that the associated blade lever heads are supported regardless of the position of the adjusting ring and thus the vanes substantially orthogonal to the associated edge.
  • This orthogonal support serves in particular the purpose of achieving optimum transfer of the adjusting force to the blade lever heads and thus to the guide vanes through the adjusting ring.
  • the respective flanks according to the invention can be designed such that they ensure an optimized transmission of the adjusting force between adjusting ring and blade lever head only in the relevant angular range and / or ensure contact between the blade lever head and the associated edge.
  • an adjusting ring 1 comprises at least one recess 2, wherein the recesses 2 have two lateral flanks 3,3 'and a base 4.
  • both flanks 3,3 'of the recess 2 shown have a curved shape, both flanks 3,3' show a square transition to the adjusting ring 1. Of course, this can also be rounded.
  • one of the flanks 3 corresponds to the mirror image of the other flank 3 'relative to a mirror plane 5 extending in the middle of both flanks 3,3', which at the same time forms a radial plane of the adjusting ring 1.
  • the base 4 of the recess 2 also has a curved shape, wherein the angles of curvature of the flanks 3,3 'and the base 4 differ in that the base 4 has a greater curvature.
  • flanks 3,3 ' according to the Fig. 1 can also be a fixation of the respective blade lever head in the radial direction in the associated recess 2.
  • Fig. 2 shows an alternative, not belonging to the invention, embodiment of the flanks 3,3 'of the recess 2, which have a square transition to the adjusting ring 1.
  • the flanks 3,3 'here are flat and have a predetermined deviation from a parallel arrangement, so that they show an inclination to each other and touch in a pointed base 4.
  • Fig. 3 shows an embodiment of the adjusting ring 1 according to the invention, the recess 2, a flat edge 3 and a curved edge 3 ', wherein both flanks 3,3' have a polygonal transition to the adjusting ring.
  • the curved edge 3 ' touches the flat edge 3 in the bottom 4 of the recess 4, whereby a curved base 4 of the recess 2 is formed.
  • the transition between the adjusting ring 1 and the recess 2 is rounded.
  • the transition to a flank 3 has a different rounding, as the transition to the other edge 3 '.
  • the flanks 3,3 ' are each plane, wherein they differ from a parallel arrangement such that they lie on radial planes 6 which extend through the center 7 of the adjusting ring 1.
  • the flat edges 3,3 ', which lie on the levels 6, run together in a curved and rounded base 4 of the associated recess 2.
  • the flanks 3,3 ' are further designed such that one of the flanks 3' corresponds to the mirror image of the other flank 3 with respect to a mirror plane 5 extending in the middle of both flanks 3,3 '.
  • flanks 3,3 ' a transfer of an adjusting force on the flanks 3,3' on to improve the corresponding blade lever heads.
  • the flanks 3,3 ' are designed such that their shape and arrangement ensure a substantially orthogonal support of the associated blade lever head, regardless of the position of the respective guide vanes and thus of the blade lever head.
  • the introduction of force between the lever head and the adjusting ring 1 takes place in the circumferential direction (tangential) of the adjusting ring. 1

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Supercharger (AREA)

Description

Die vorliegende Erfindung betrifft einen Verstellring für eine variable Turbinen-und/oder Verdichtergeometrie, gemäß dem Oberbegriff des Anspruches 1. Die Erfindung betrifft außerdem eine variable Turbinen- und/oder Verdichtergeometrie mit einem derartigen Verstellring. Die Erfindung betrifft weiter eine Ladeeinrichtung, insbesondere einen Abgasturbolader, mit einer variablen Turbinen-und/oder Verdichtergeometrie der genannten Art.The present invention relates to an adjusting ring for a variable turbine and / or compressor geometry, according to the preamble of claim 1. The invention also relates to a variable turbine and / or compressor geometry with such an adjusting ring. The invention further relates to a charging device, in particular an exhaust gas turbocharger, with a variable turbine and / or compressor geometry of the type mentioned.

Die variable Turbinen- und/oder Verdichtergeometrie ist eine gängige Technik zur Leistungsregelung einer Ladeeinrichtung, insbesondere eines Abgasturboladers, bei unterschiedlichen Gasdurchsätzen. Dazu ist ein Verstellring mit Ausnehmungen vorgesehen, die zwei im Wesentlichen parallele seitliche Flanken ausweisen, wobei die Ausnehmungen Schaufelhebelköpfe von Schaufelhebeln aufnehmen. Dabei werden die Schaufelhebelköpfe durch einen Kontakt mit den Flanken der Ausnehmungen des Verstellrings bewegt, was zu einer Drehung von an einem Schaufellagerring angeordneten Leitschaufeln, die über einen Schaufellagerzapfen drehfest mit den Schaufelhebel verbunden sind, führt. Hierbei wird insbesondere bei hohem Leistungsbedarf durch die Ladeeinrichtung und/oder geringem Antriebsgasdurchsatz, der durch die Leitschaufeln geöffnete Querschnitt reduziert. Entsprechend wird bei niedrigem Leistungsbedarf durch die Ladeeinrichtung und/oder hohem Antriebsgasdurchsatz, der durch die Leitschaufeln zur Verfügung stehenden Querschnitt erhöht. Nachteilig dabei ist, dass eine Lücke zwischen den Schaufelhebelköpfen und der zugehörigen Flanke entstehen kann, die eine Trägheit der variablen Turbinen- und/oder Verdichtergeometrie zur Folge hat. Des Weiteren führt ein falscher Übertrag einer Verstellkraft über die Flanken auf die entsprechenden Schaufelhebelköpfe zur Entstehung einer Reibung, die ebenfalls zur Trägheit der variablen Turbinen- und/oder Verdichtergeometrie beiträgt. Die Trägheit führt, insbesondere bei Lastwechseln bzw. Änderungen des Leistungsbedarfs durch die Ladeeinrichtung, zu einer verzögerten Reaktionszeit bzw. einer Hysterese und somit eine Leistungsminderung der Ladeeinrichtung.The variable turbine and / or compressor geometry is a common technique for power control of a charging device, in particular an exhaust gas turbocharger, at different gas flow rates. For this purpose, an adjusting ring is provided with recesses, which identify two substantially parallel lateral edges, wherein the recesses receive blade lever heads of blade levers. In this case, the blade lever heads are moved by contact with the flanks of the recesses of the adjusting ring, resulting in a rotation of arranged on a blade bearing ring guide vanes, which are non-rotatably connected via a blade bearing journal with the blade lever leads. In this case, in particular at high power requirements by the charging device and / or low drive gas throughput, the cross section opened by the guide vanes is reduced. Accordingly, with low power requirement by the charger and / or high drive gas flow rate, the cross section available through the vanes is increased. The disadvantage here is that a gap between the blade lever heads and the associated edge can arise, which has an inertia of the variable turbine and / or compressor geometry result. Furthermore, a false transfer of an adjusting force via the flanks to the corresponding blade lever heads leads to the formation of a friction, which likewise contributes to the inertia of the variable turbine and / or compressor geometry. The inertia leads, in particular during load changes or changes in the Power requirement by the charging device, to a delayed reaction time or a hysteresis and thus a reduction in performance of the charging device.

Gattungsgemäße Verstellringe sind beispielsweise aus der DE 10 2007 022 356 A1 und der DE 10 2004 023 209 A1 bekannt.Generic adjusting rings are for example from the DE 10 2007 022 356 A1 and the DE 10 2004 023 209 A1 known.

Die vorliegende Erfindung beschäftigt sich daher mit dem Problem, für einen Verstellring der gattungsgemäßen Art eine verbesserte Ausführungsform anzugeben, die insbesondere zu einer Beseitigung oder zumindest Verminderung des Hystereseverhaltens der variablen Turbinen- und/oder Verdichtergeometrie beiträgt.The present invention therefore deals with the problem of providing an improved embodiment for an adjusting ring of the generic type, which contributes in particular to eliminating or at least reducing the hysteresis behavior of the variable turbine and / or compressor geometry.

Dieses Problem wird erfindungsgemäß durch den Gegenstand des unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matter of the independent claims. Advantageous embodiments are the subject of the dependent claims.

Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, bei einem Verstellring einer variablen Turbinen- und/oder Verdichtergeometrie einer Ladeeinrichtung, wobei der Verstellring nach innen gerichtete Ausnehmungen zur Aufnahme von Schaufelhebelköpfen von Schaufelhebeln umfasst und jede Aufnahme zwei Flanken aufweist, die Flanken von mindestens einer Aufnehmung so zu gestalten, dass die Schaufelhebelköpfe und zumindest eine der Flanken der zugehörigen Ausnehmung, für beliebige Stellungen der zugehörigen Leitschaufel und somit der Schaufelhebelköpfe, einen Kontakt aufweisen. Zudem oder alternativ sind die Flanken derart ausgebildet, dass ein Übertrag einer Verstellkraft über die Flanken auf die entsprechenden Schaufelhebelköpfe optimiert wird. Die Erfindung nutzt dabei die Erkenntnis, dass eine Lücke zwischen einem Schaufelhebelkopf und der Flanke der zugehörigen Aussparung des Verstellrings bei bestimmten Stellungen des Verstellrings und somit der Schaufelhebelköpfe, durch die parallele Anordnung der Flanken einer Ausnehmung verursacht wird. Auch eine durch eine ungünstige Übertragung der Verstellkraft verursachte Reibung zwischen Schaufelhebelkopf und Flanke ist insbesondere durch die parallele Anordnung der Flanken verursacht, die eine optimale Übertragung der Verstellkraft nur bei bestimmten Verstellpositionen des Verstellrings und damit bei bestimmten Stellungen des Schaufelhebelkopfes ermöglichen. Dem allgemeinen Erfindungsgedanken entsprechend, weist dabei zumindest eine Flanke zumindest einer Ausnehmung eine gekrümmte Form, insbesondere eine parabolische Form, auf oder beide Flanken einer Ausnehmung besitzen eine vordefinierte Abweichung von einer parallelen Anordnung. Der Krümmungswinkel der beispielsweise gekrümmten Flanken, kann dabei insbesondere eine Abhängigkeit von einem Nenndurchmesser des Schaufelhebelkopfes aufweisen. Die gekrümmte Form der Flanke dient dabei insbesondere dem Zweck, einen Kontakt zwischen Schaufelhebelkopf und dieser Flanke für beliebige Stellungen der Leitschaufeln und somit des Schaufelhebelkopfes zu gewährleisten. Zudem oder alternativ dienen diese Ausführungsformen der Flanke dem Zweck, eine durch die Flanke auf den Schaufelhebelkopf übertragene Verstellkraft derart zu optimieren, dass die Reibung zwischen Flanke und Schaufelhebelkopf zumindest reduziert wird.The present invention is based on the general idea, in an adjusting ring of a variable turbine and / or compressor geometry of a charging device, wherein the adjusting ring inwardly directed recesses for receiving blade lever heads of blade levers and each shot has two flanks, the flanks of at least one Aufnehmung be designed so that the blade lever heads and at least one of the flanks of the associated recess, for any position of the associated vane and thus the blade lever heads, have a contact. In addition or alternatively, the flanks are designed such that a transfer of an adjusting force via the flanks to the corresponding blade lever heads is optimized. The invention uses the knowledge that a gap between a blade lever head and the edge of the associated recess of the adjusting ring at certain positions of the adjusting ring and thus the blade lever heads, caused by the parallel arrangement of the flanks of a recess. Also a caused by an unfavorable transmission of the adjusting friction between blade lever head and flank is particularly caused by the parallel arrangement of the flanks, which allow optimum transfer of the adjusting only at certain adjustment positions of the adjusting ring and thus at certain positions of the blade lever head. According to the general idea of the invention, at least one flank of at least one recess has a curved shape, in particular a parabolic shape, on or both flanks of a recess have a predefined deviation from a parallel arrangement. The angle of curvature of the curved flanks, for example, can in particular have a dependence on a nominal diameter of the blade lever head. The curved shape of the flank serves in particular the purpose of ensuring contact between the blade lever head and this flank for arbitrary positions of the guide vanes and thus of the blade lever head. In addition or alternatively, these embodiments of the flank serve the purpose of optimizing an adjusting force transmitted by the flank to the blade lever head such that the friction between flank and blade lever head is at least reduced.

Bei einer alternativen, nicht zum Gegenstand der Erfindung gehörenden, Ausführungsform sind die Flanken einer Ausnehmung derart ausgebildet sein, dass sie eine vorgegebene Abweichung von einer parallelen Anordnung aufweisen. Die Flanken sind dementsprechend derart gestaltet, dass sie beispielsweise schräg zueinander angeordnet sind. Auch eine derartige Anordnung dient insbesondere dem Zweck einen Kontakt zwischen Schaufelhebelkopf und der entsprechenden Flanke/Flanken für beliebige Stellungen der Leitschaufeln und somit des Schaufelhebelkopfes zu gewährleisten. Zudem oder alternativ dient diese Ausführungsform der Flanken dem Zweck, eine durch die Flanke auf den Schaufelhebelkopf übertragene Verstellkraft derart zu optimieren, dass die Reibung zwischen Flanke und Schaufelhebelkopf zumindest minimiert wird.In an alternative, not part of the subject invention, the flanks of a recess are formed such that they have a predetermined deviation from a parallel arrangement. The flanks are accordingly designed such that they are arranged, for example, obliquely to each other. Such an arrangement also serves in particular for the purpose of ensuring contact between the blade lever head and the corresponding flank / flanks for any desired positions of the guide blades and thus of the blade lever head. In addition or alternatively, this embodiment of the flanks serves the purpose of optimizing an adjusting force transmitted by the flank to the blade lever head such that the friction between flank and blade lever head is at least minimized.

Bei der erfindungsgemäßen Lösung sind die Flanken einer Ausnehmung, die eine Abweichung von einer parallelen Anordnung aufweisen, derart ausgebildet, dass zumindest eine der Flanken in einer Radialebene des Verstellringes verläuft. Alternativ können auch beide Flanken einer Ausnehmung in einer Radialebene liegen. Diese Anordnung der Flanken führt nun insbesondere dazu, dass der Kontakt zwischen Schaufelhebelkopf und Flanke/Flanken für beliebige Stellungen der Leitschaufeln und somit des Schaufelhebelkopfes gewährleistet ist. Auch hier können die Kraftübertragung verbessert, die Hysteresewirkung und die Reibung reduziert werden.In the solution according to the invention, the flanks of a recess, which have a deviation from a parallel arrangement, are designed such that at least one of the flanks extends in a radial plane of the adjusting ring. Alternatively, both flanks of a recess can lie in a radial plane. This arrangement of the flanks now leads in particular to the fact that the contact between the blade lever head and flank / flanks is ensured for any desired positions of the guide blades and thus of the blade lever head. Again, the power transmission can be improved, the hysteresis and the friction can be reduced.

Eine weitere vorteilhafte Ausführungsform weist Flanken zumindest einer Ausnehmung auf, die spiegelbildlich zueinander angeordnet sind. Als Beispiel wird hier auf Flanken hingewiesen, die bezüglich einer in ihrer Mitte verlaufende Radialebene des Verstellringes zueinander gespiegelt sind. Die Flanken sind also insbesondere bei gekrümmter Form der jeweiligen Flanken derart ausgebildet, dass sie auf beiden Seiten der zugehörigen Ausnehmung die gleiche, jedoch gespiegelte, Aufnahme zur Verfügung stellen.A further advantageous embodiment has flanks of at least one recess, which are arranged in mirror image to each other. As an example, reference is made here to flanks which are mirrored relative to one another with respect to a radial plane of the adjusting ring running in their middle. The flanks are thus designed in particular in the case of a curved shape of the respective flanks such that they provide the same, but mirrored, receptacle on both sides of the associated recess.

Bei einer weiteren Ausführungsform weist ein Grund der Ausnehmung zusätzlich zu den bereits genannten Ausführungsformen eine gekrümmte Form auf. Dabei kann der Grund beispielsweise abgerundet sein, um insbesondere eine Reibung des Schaufelhebelkopfes mit dem Grund der zugehörigen Ausnehmung zu verhindern.In a further embodiment, a bottom of the recess has a curved shape in addition to the already mentioned embodiments. In this case, the reason may be rounded, for example, to prevent in particular a friction of the blade lever head with the bottom of the associated recess.

Entsprechend einer vorteilhaften Weiterbildung ist der Verstellring in eine variablen Turbinen- und/oder Verdichtergeometrie integriert. Dabei sind die Schaufelhebel durch Schaufelhebelzapfen mit einem Schaufellagerring verbunden, wobei Leitschaufeln drehfest mit den Schaufelhebelzapfen gekoppelt sind. Diese Weiterbildung dient nun insbesondere dem Zweck, eine Reibungskraft zwischen den Flanken der Ausnehmungen des Verstellringes und den zugehörigen Ausnehmungen, unabhängig von der Stellung des Schaufellagerrings und somit der zugehörigen Leitschaufeln zumindest zu reduzieren.According to an advantageous development of the adjusting ring is integrated in a variable turbine and / or compressor geometry. The blade levers are connected by blade lever pin with a blade bearing ring, wherein guide vanes are rotatably coupled to the blade lever pivot. This development now serves in particular the purpose of a frictional force between the Flanks of the recesses of the adjusting ring and the associated recesses, regardless of the position of the blade bearing ring and thus the associated vanes at least to reduce.

Entsprechend einer vorteilhaften Ausführungsform der erfindungsgemäßen variablen Turbinen- und/oder Verdichtergeometrie sind die Flanken des Verstellringes derart ausgebildet, dass die zugehörigen Schaufelhebelköpfe unabhängig von der Stellung des Verstellringes und somit der Leitschaufeln im Wesentlichen orthogonal an der zugehörigen Flanke abgestützt werden. Diese orthogonale Abstützung dient dabei insbesondere dem Zweck, eine optimale Übertragung der Verstellkraft auf die Schaufelhebelköpfe und somit auf die Leitschaufeln durch den Verstellring zu erzielen.According to an advantageous embodiment of the variable turbine and / or compressor geometry according to the invention, the flanks of the adjusting ring are designed such that the associated blade lever heads are supported regardless of the position of the adjusting ring and thus the vanes substantially orthogonal to the associated edge. This orthogonal support serves in particular the purpose of achieving optimum transfer of the adjusting force to the blade lever heads and thus to the guide vanes through the adjusting ring.

Es sei darauf hingewiesen, dass die Rotation des Verstellungsrings in einer variablen Turbinen- und/oder Verdichtergeometrie in der Regel lediglich über einige Winkelgrad führt. Dementsprechend können die jeweiligen Flanken erfindungsgemäß derart ausgebildet sein, dass sie lediglich in dem relevanten Winkelbereich eine optimierte Übertragung der Verstellkraft zwischen Verstellring und Schaufelhebelkopf sicherstellen und/oder einen Kontakt zwischen Schaufelhebelkopf und der zugehörigen Flanke gewährleisten.It should be noted that the rotation of the displacement ring in a variable turbine and / or compressor geometry usually only leads over a few angular degrees. Accordingly, the respective flanks according to the invention can be designed such that they ensure an optimized transmission of the adjusting force between adjusting ring and blade lever head only in the relevant angular range and / or ensure contact between the blade lever head and the associated edge.

Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

Es zeigen, jeweils schematisch:

Fig. 1.2
jeweils einen Ausschnitt eines nicht zum Erfindungsgegenstand gehörenden Verstellrings;
Fig. 3,4
jeweils einen Ausschnitt eines erfindungsgemäßen Verstellrings.
It show, each schematically:
Fig. 1.2
in each case a section of an adjusting ring not belonging to the subject invention;
Fig. 3.4
in each case a section of an adjusting ring according to the invention.

Wie in Fig. 1 bis Fig. 4 dargestellt ist, umfasst ein Verstellring 1 zumindest eine Aussparung 2, wobei die Aussparungen 2 zwei seitliche Flanken 3,3' und einen Grund 4 aufweisen.As in Fig. 1 to Fig. 4 1, an adjusting ring 1 comprises at least one recess 2, wherein the recesses 2 have two lateral flanks 3,3 'and a base 4.

In der in Fig. 1 gezeigten Ausführungsform eines beispielhaften Verstellringes 1, weisen beide Flanken 3,3' der dargestellten Ausnehmung 2 eine gekrümmte Form auf, wobei beide Flanken 3,3' einen eckigen Übergang zum Verstellring 1 zeigen. Dieser kann selbstverständlich auch ausgerundet sein. Dabei entspricht eine der Flanken 3 dem Spiegelbild der anderen Flanke 3' bezüglich einer in der Mitte beider Flanken 3,3' verlaufenden Spiegelebene 5, die zugleich eine Radialebene des Verstellrings 1 bildet. Der Grund 4 der Ausnehmung 2 weist ebenfalls eine gekrümmte Form auf, wobei die Krümmungswinkel der Flanken 3,3' und des Grundes 4 sich darin unterscheiden, dass der Grund 4 eine stärkere Krümmung aufweist.In the in Fig. 1 shown embodiment of an exemplary adjusting ring 1, both flanks 3,3 'of the recess 2 shown have a curved shape, both flanks 3,3' show a square transition to the adjusting ring 1. Of course, this can also be rounded. In this case, one of the flanks 3 corresponds to the mirror image of the other flank 3 'relative to a mirror plane 5 extending in the middle of both flanks 3,3', which at the same time forms a radial plane of the adjusting ring 1. The base 4 of the recess 2 also has a curved shape, wherein the angles of curvature of the flanks 3,3 'and the base 4 differ in that the base 4 has a greater curvature.

Bei einer entsprechenden Ausbildung der Flanken 3,3' gemäß der Fig. 1 kann auch eine Fixierung des jeweiligen Schaufelhebelkopfes in Radialrichtung in der zugehörigen Ausnehmung 2 erfolgen.In a corresponding embodiment of the flanks 3,3 'according to the Fig. 1 can also be a fixation of the respective blade lever head in the radial direction in the associated recess 2.

Fig. 2 zeigt eine alternative, nicht zur Erfindung gehörenden, Ausführungsform der Flanken 3,3' der Ausnehmung 2, die einen eckigen Übergang zum Verstellring 1 aufweisen. Die Flanken 3,3' sind hier eben und weisen eine vorgegebene Abweichung von einer parallelen Anordnung auf, derart dass sie eine Neigung zueinander aufzeigen und sich in einem spitzen Grund 4 berühren. Die Flanken 3,3' sind weiter derart ausgebildet, dass eine der Flanken 3 dem Spiegelbild der anderen Flanke 3' bezüglich der in der Mitte beider Flanken 3 verlaufenden Spiegelebene 5 entspricht. Fig. 2 shows an alternative, not belonging to the invention, embodiment of the flanks 3,3 'of the recess 2, which have a square transition to the adjusting ring 1. The flanks 3,3 'here are flat and have a predetermined deviation from a parallel arrangement, so that they show an inclination to each other and touch in a pointed base 4. The flanks 3,3 'are further designed such that one of the flanks 3 corresponds to the mirror image of the other flank 3' with respect to the mirror plane 5 extending in the middle of both flanks 3.

Fig. 3 zeigt eine Ausführungsform des erfindungsgemäßen Verstellringes 1, dessen Ausnehmung 2, eine ebene Flanke 3 und eine gekrümmte Flanke 3' aufweist, wobei beide Flanken 3,3' einen eckigen Übergang zum Verstellring aufweisen. Die gekrümmt Flanke 3' berührt dabei die ebene Flanke 3 im Grund 4 der Ausnehmung 4, womit ein gekrümmter Grund 4 der Ausnehmung 2 ausgebildet wird. Fig. 3 shows an embodiment of the adjusting ring 1 according to the invention, the recess 2, a flat edge 3 and a curved edge 3 ', wherein both flanks 3,3' have a polygonal transition to the adjusting ring. The curved edge 3 'touches the flat edge 3 in the bottom 4 of the recess 4, whereby a curved base 4 of the recess 2 is formed.

In der in Fig. 4 dargestellten erfindungsgemäßen Ausführungsform der Ausnehmung 2 eines Verstellringes 1, ist der Übergang zwischen dem Verstellring 1 und der Ausnehmung 2 abgerundet. Dabei weist der Übergang zur einen Flanke 3 eine andere Abrundung auf, als der Übergang zur anderen Flanke 3'. Die Flanken 3,3' sind dabei jeweils eben, wobei sie derart von einer parallelen Anordnung abweichen, dass sie auf Radialebenen 6 liegen, die durch den Mittelpunkt 7 des Verstellrings 1 verlaufen. Die ebenen Flanken 3,3', die auf den Ebenen 6 liegen, laufen in einem gekrümmten und abgerundeten Grund 4 der zugehörigen Ausnehmung 2 zusammen. Die Flanken 3,3' sind weiter derart ausgebildet, dass eine der Flanken 3' dem Spiegelbild der anderen Flanke 3 bezüglich einer in der Mitte beider Flanken 3,3' verlaufenden Spiegelebene 5 entspricht.In the in Fig. 4 illustrated embodiment of the recess 2 of an adjusting ring 1, the transition between the adjusting ring 1 and the recess 2 is rounded. In this case, the transition to a flank 3 has a different rounding, as the transition to the other edge 3 '. The flanks 3,3 'are each plane, wherein they differ from a parallel arrangement such that they lie on radial planes 6 which extend through the center 7 of the adjusting ring 1. The flat edges 3,3 ', which lie on the levels 6, run together in a curved and rounded base 4 of the associated recess 2. The flanks 3,3 'are further designed such that one of the flanks 3' corresponds to the mirror image of the other flank 3 with respect to a mirror plane 5 extending in the middle of both flanks 3,3 '.

Diese Ausführungsformen dienen nun insbesondere dem Zweck, durch die Form der Flanken 3,3', eine Übertragung einer Verstellkraft über die Flanken 3,3' auf die entsprechenden Schaufelhebelköpfe zu verbessern. Dies geschieht insbesondere dadurch, dass die Flanken 3,3' derart ausgebildet sind, dass ihre Form und Anordnung eine im Wesentlichen orthogonale Abstützung des zugehörigen Schaufelhebelkopfes, unabhängig von der Stellung der entsprechenden Leitschaufeln und somit des Schaufelhebelkopfes, sicherstellen. Die Krafteinleitung zwischen dem Hebelkopf und dem Verstellring 1 erfolgt in Umfangsrichtung (tangential) des Verstellrings 1.These embodiments are now used in particular for the purpose, by the shape of the flanks 3,3 ', a transfer of an adjusting force on the flanks 3,3' on to improve the corresponding blade lever heads. This is done in particular in that the flanks 3,3 'are designed such that their shape and arrangement ensure a substantially orthogonal support of the associated blade lever head, regardless of the position of the respective guide vanes and thus of the blade lever head. The introduction of force between the lever head and the adjusting ring 1 takes place in the circumferential direction (tangential) of the adjusting ring. 1

Claims (7)

  1. An adjusting ring (1) for a variable turbine/compressor geometry of a supercharging device with inwardly directed recesses (2) for receiving blade lever tips of blade levers, wherein each recess (2) comprises two lateral flanks (3, 3'), wherein both flanks (3, 3') of a recess (2) comprise a predefined deviation from a parallel arrangement,
    characterized in
    that at least one flank (3, 3') of a recess (2) runs in a radial plane of the adjusting ring (1).
  2. The adjusting ring according to claim 1,
    characterized in
    that both flanks (3, 3') of a recess (2) are designed in mirror image relative to one another.
  3. The adjusting ring according to claim 1 or 2,
    characterized in
    that a bottom (4) of one of the recesses (2) has a curved shape.
  4. A variable turbine or compressor geometry, comprising a blade bearing ring, in which guide blades are each rotatably mounted via a blade bearing pin (7) and an adjusting ring (1) according to any one of the preceding claims.
  5. The variable turbine or compressor geometry according to claim 4,
    characterized in
    that at least one of the flanks (3, 3') of one of the recesses (2) of the adjusting ring (1) is arranged and/or shaped in such a manner that the blade lever head substantially supports itself orthogonally on this flank (3, 3') independently of the position of the guide blades.
  6. The variable turbine or compressor geometry according to claim 4 or 5,
    characterized in
    that a force introduction between the blade lever head and the adjusting ring (1) in circumferential direction (tangential) of the adjusting ring (1) takes place.
  7. A supercharging device, in particular an exhaust gas turbocharger for a motor vehicle, with a variable turbine or compressor geometry according to any one of the claims 4 to 6.
EP12154460.5A 2011-03-15 2012-02-08 Adjustment ring of a charging device Not-in-force EP2500526B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011005556A DE102011005556A1 (en) 2011-03-15 2011-03-15 adjusting

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EP2500526A1 EP2500526A1 (en) 2012-09-19
EP2500526B1 true EP2500526B1 (en) 2015-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12154460.5A Not-in-force EP2500526B1 (en) 2011-03-15 2012-02-08 Adjustment ring of a charging device

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US (1) US20120237339A1 (en)
EP (1) EP2500526B1 (en)
DE (1) DE102011005556A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102009057664A1 (en) * 2009-12-09 2011-06-16 Ihi Charging Systems International Gmbh Adjusting device for a charging device, in particular for an exhaust gas turbocharger
DE102013000499A1 (en) 2013-01-12 2014-07-17 Daimler Ag Adjustment device for supercharger for lifting cylinder internal combustion engine to drive passenger car, has adjusting ring centered relative to bearing element, and centering element centered in coupling element
JP2021008819A (en) * 2017-10-06 2021-01-28 株式会社Ihi Variable displacement mechanism
CN113631808B (en) * 2019-05-09 2023-08-29 三菱重工发动机和增压器株式会社 variable capacity exhaust turbocharger

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JP3933455B2 (en) * 2001-11-30 2007-06-20 株式会社小松製作所 Variable turbocharger
EP1357255B1 (en) * 2002-04-26 2007-04-11 BorgWarner Inc. Variable nozzle turbocharger
DE10316389B3 (en) * 2003-04-10 2004-01-22 Mtu Friedrichshafen Gmbh Guide device for an exhaust gas turbocharger
DE102004023209A1 (en) 2004-05-11 2005-12-08 Volkswagen Ag Exhaust gas turbocharger with variable turbine geometry for internal combustion engine has at least one adjusting ring guiding element formed with cut away section so that bearing surface protrudes radially beyond guide element
DE102004043928A1 (en) * 2004-09-11 2006-04-13 Ihi Charging Systems International Gmbh Vane adjusting drive especially for exhaust powered turbocharger has a control ring linked to a support mounting using pivot mounted support arms with shaped outer ends
EP1809908B1 (en) * 2004-11-08 2008-02-20 Honeywell International Inc. Variable geometry compressor
DE102006048514B3 (en) * 2005-12-01 2007-05-10 Mtu Friedrichshafen Gmbh Guidance device for VTG-exhaust gas turbocharger, has fixing element on side, which is turned away from blade lever, is designed as stopper for following spring element
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JP4307500B2 (en) * 2007-09-21 2009-08-05 株式会社豊田自動織機 Turbocharger with variable nozzle mechanism
DE102009032452A1 (en) * 2009-07-09 2011-01-13 Bosch Mahle Turbo Systems Gmbh & Co. Kg Loading device i.e. exhaust gas turbocharger, for motor vehicle, has rotatably supported guide vanes, and adjusting ring e.g. translationally supported adjusting slider, for adjusting guide vanes orthogonal to axis of device
KR101144515B1 (en) * 2009-10-27 2012-05-11 현대자동차주식회사 Nozzle Assembly of Variable Geometry Turbocharger
US20110138805A1 (en) * 2009-12-15 2011-06-16 Honeywell International Inc. Conjugate curve profiles for vane arms, main-arms, and unison rings

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Publication number Publication date
US20120237339A1 (en) 2012-09-20
DE102011005556A1 (en) 2012-09-20
EP2500526A1 (en) 2012-09-19

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