EP2288792A2 - Ensemble grille directrice pour un turbocompresseur a gaz d'echappement, turbocompresseur a gaz d'echappement et procede de fabrication d'un ensemble grille directrice - Google Patents

Ensemble grille directrice pour un turbocompresseur a gaz d'echappement, turbocompresseur a gaz d'echappement et procede de fabrication d'un ensemble grille directrice

Info

Publication number
EP2288792A2
EP2288792A2 EP09722558A EP09722558A EP2288792A2 EP 2288792 A2 EP2288792 A2 EP 2288792A2 EP 09722558 A EP09722558 A EP 09722558A EP 09722558 A EP09722558 A EP 09722558A EP 2288792 A2 EP2288792 A2 EP 2288792A2
Authority
EP
European Patent Office
Prior art keywords
vtg
recesses
carrier ring
exhaust gas
gas turbocharger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09722558A
Other languages
German (de)
English (en)
Inventor
Ralf Böning
Dirk Frankenstein
Holger Fäth
Marc Hiller
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2288792A2 publication Critical patent/EP2288792A2/fr
Withdrawn legal-status Critical Current

Links

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
    • F05D2230/00—Manufacture
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • Leitgitteran an exhaust gas turbocharger, exhaust gas turbocharger and method for producing a Leitgitteranaku
  • the present invention relates to a baffle arrangement of an exhaust gas turbocharger with variable turbine geometry. Moreover, the present invention relates to an exhaust gas turbocharger with variable turbine geometry and a method for producing such a guide grid arrangement for or in an exhaust gas turbocharger.
  • Turbochargers with variable turbine geometry have proven to be advantageous in the past for increasing the performance and reducing the consumption of internal combustion engines.
  • the inlet cross section, under which the hot exhaust gases are directed to the turbine wheel of the exhaust gas turbocharger can be varied.
  • the speed of the boost pressure build-up can be set as a function of engine speed and engine load. It can therefore be ensured in a turbocharger with variable turbine geometry at each engine operating point, a rapid boost pressure build-up.
  • variable turbine geometry is realized by means of an adjustable guide grille.
  • a baffle consists of a ring of variable orientation vanes located in a narrow area, referred to as a vane space, between the exhaust gas supply passage of the turbine and the turbine rotor.
  • the blade space In order to allow effective, low-loss steering of the exhaust gas flow, the blade space must not be formed substantially wider than the height of the guide vanes.
  • the vane space must not be too tight, because then the vanes could jam in operation as a result of thermal component deformations.
  • the document EP 1 734 231 A1 describes a turbocharger with variable turbine geometry in which the adjustable guide grid, as described above, is formed by a ring of variable orientation vanes.
  • the adjustability of the guide vanes is realized by the rotatable mounting of the guide vanes in a carrier ring, which is also referred to as a blade bearing ring realized.
  • FIG. 1 shows a known guide grid arrangement 1, as e.g. in EP 734 231 A1.
  • the Leitgitteran extract 1 consists of a blade bearing ring 2, in which a plurality of VTG Leitschaufein 3 are stored.
  • the VTG Leitschaufein 3 are rotatably supported by means of integrally formed pivot pin 4 in recesses 5 of the blade bearing ring 2.
  • the vane ring 2 has a thickness DO that is one to two times the height HO of the VTG vane 3.
  • Such a blade bearing ring is typically manufactured by a machining process. For machining a vane bearing ring turning operations, drilling operations and possibly also milling operations are required. In order to produce the blade bearing ring with the aid of machining production methods, specially provided machine tools must be provided, which makes the production of such blade bearing rings complex and expensive.
  • the document EP 1 394 364 B1 describes a blade bearing ring with an analogous construction to the blade bearing ring shown in FIG.
  • the production of a blade bearing ring is proposed by means of a casting process.
  • the provision of a suitable melting furnace and the required in a casting machining after-treatment are to be mentioned as significant cost factors.
  • the production of a blade bearing ring as a casting is therefore associated with a considerable cost.
  • a guide grid arrangement of an exhaust gas turbocharger with variable turbine geometry which has at least one carrier ring formed from at least one sheet metal part for supporting VTG guide vanes, wherein the VTG vanes are rotatably mounted in recesses of a carrier ring.
  • a guide grid arrangement of an exhaust gas turbocharger with variable turbine geometry which has at least one support ring, which is formed from at least one annular component, and which has VTG Leitschaufein, which are rotatably mounted in recesses of a support ring, wherein the annular or the Components each have an axial extent that is less than 75% of the height of the VTG Leitschaufein.
  • an exhaust-gas turbocharger which has a turbine-side section with a supply channel for supplying exhaust gas, in which a turbine rotor is rotatably mounted and in which a guide-grid arrangement according to the invention is provided.
  • a method for producing a Leitgitteran angel invention is provided with the following steps: providing at least one sheet metal part, generating a carrier ring with recesses from the at least one sheet metal part, providing VTG guide vanes, inserting the VTG Leitschaufein in the recesses of a carrier ring.
  • the idea on which the present invention is based is to provide a guide grid arrangement with at least one support ring formed from at least one conventional sheet metal part for the rotatable mounting of the VTG guide runner, which is made thin compared to commercially available support rings.
  • the use of carrier rings made of sheet metal, which are thin compared to customary solutions, ensures rapid and uniform heating of the carrier rings during operation. As a result, the risk of jamming of the VTG Leitschaufein in the blade space due to a thermally induced bending of the carrier ring is significantly reduced.
  • material savings can be realized when using such carrier rings compared to commercially available, thicker carrier rings. These savings in expensive, highly heat-resistant material make it possible to manufacture the guide-grid arrangement at low cost compared to known solutions.
  • Another idea of the present invention is to provide an exhaust gas turbocharger with variable turbine geometry with a guide grid arrangement according to the invention.
  • a guide grid arrangement according to the invention By installing a guide grid arrangement according to the invention in an exhaust gas turbocharger, the total production costs for an exhaust gas turbocharger can be lowered in comparison to commercially available exhaust gas turbochargers. Since the risk of jamming of the VTG guide vanes is reduced by using a guide-grid arrangement according to the invention, an exhaust-gas turbocharger with such a guide-grid arrangement is additionally distinguished by a higher level of operational reliability compared with commercially available exhaust-gas turbochargers.
  • Another idea of the present invention is to provide a method for producing a baffle arrangement according to the invention.
  • the inventive method is characterized in that the carrier rings are made for storage of the VTG Leitschaufein of conventional sheet metal parts.
  • material savings can be achieved in the production of the carrier rings in comparison to machining or production as a casting. Due to these savings on expensive, high-temperature-resistant material, the method according to the invention enables a cost-effective manufacture of a guide-grid arrangement according to the invention in comparison with conventional methods.
  • the sheet metal parts used for the production of the carrier rings have a thickness which is less than 75% of the height of the VTG Leitschaufein. More preferably, the thickness of the sheet metal parts is less than 60% and more preferably less than 50% of the height of the VTG guide vanes.
  • Such an embodiment of the carrier rings has the advantage that with decreasing thickness of the sheet metal parts used for the production of the carrier rings a more rapid and uniform heating of the carrier rings is ensured, and the risk of jamming the VTG Guide vanes in the vane space due to thermally induced bending of the carrier rings is increasingly reduced. Furthermore, with decreasing thickness of the sheet metal parts used for the production of the carrier rings, increasing material savings can be realized in the production of the carrier rings. This in turn results in decreasing production costs for the entire baffle arrangement.
  • a Leitgitteran extract is provided, the VTG Leitschaufein each have a blade portion and a molded thereon pivot pin.
  • Such a structural design of the VTG guide vanes allows them to be rotatably supported in a simple manner in respective recesses of a carrier ring.
  • a guide grid arrangement in which the sheet metal parts for producing the carrier rings and the recesses of the carrier rings are punched and / or genibbelt.
  • the sheet metal parts for the preparation of the carrier rings and the recesses of the carrier rings are punched and / or genibbelt.
  • a guide grid arrangement is provided with a single support ring, in whose recesses the pivot pins of the guide vanes are rotatably mounted.
  • a guide grid arrangement is provided with at least two and in particular exactly two carrier rings, between which the VTG Leitschaufein are sandwiched and in their recesses, the pivot pins of the VTG Leitschaufein are rotatably mounted.
  • a guide grid arrangement in which a carrier ring is formed in each case from a plurality of stapeiförmig superimposed sheet metal parts, so that the support ring has congruent superposed recesses in which the pivot pins of the VTG Leitschaufein are rotatably mounted.
  • a baffle arrangement in which the recesses of a carrier ring are mounted at equal radial distances from the center of the carrier ring and uniformly in the circumferential direction on the carrier ring.
  • a baffle arrangement which has an anti-rotation device, which ensures in the installed state of the baffle arrangement in the turbocharger that the baffle arrangement is secured against rotation in the turbine housing and / or in the bearing housing of the turbocharger.
  • an anti-rotation device ensures in the installed state of the baffle arrangement in the turbocharger that the baffle arrangement is secured against rotation in the turbine housing and / or in the bearing housing of the turbocharger.
  • Such a rotation lock is required in order to support the forces applied to the VTG guide blade on the turbine housing and / or on the bearing housing of the turbocharger.
  • a rotation by a screw of a Carrier ring realized on the bearing and / or on the turbine housing.
  • such an anti-rotation device can also be designed, for example, as a tongue and groove connection between the bearing or turbine housing and the inner or the outer edge of a carrier ring.
  • a guide grid arrangement is provided in which the inner and / or the outer edge of a carrier ring is formed circular.
  • a constructive design of a carrier ring is advantageous since both the turbine rotor lying within a carrier ring and the housing parts located outside the carrier ring have circular contours.
  • the inner and / or the outer edge of a carrier ring may of course also be designed to be polygonal or otherwise ring-shaped, for example for realizing an anti-twist device.
  • a method for producing a baffle arrangement in which the sheet metal parts from which the carrier rings are produced, are produced by a shear cutting process.
  • the production of sheet metal parts with a shear cutting method has significant cost advantages over the machining or manufacturing as a casting.
  • a shear cutting method may be, for example, a punching method or a nibbling method.
  • the sheet metal parts for the preparation of the carrier rings and the recesses of the carrier rings of course, with the help of one or more other, cheaper method such.
  • Fig. 1 is a schematic sectional view of a known Leitgitteraniser
  • FIG. 2A, 2B a schematic sectional view and a schematic plan view of a first, general embodiment of a guide grid arrangement according to the invention
  • FIG. 3 is a schematic plan view of an exemplary embodiment of an inventive device.
  • FIG. 4 shows a schematic sectional view of a preferred embodiment of a guide grid arrangement according to the invention
  • FIG. 5 shows a schematic sectional view of a further preferred embodiment of a guide grid arrangement according to the invention.
  • FIG. 6 shows an exemplary, isometric view of an exhaust-gas turbocharger with variable turbine geometry with a guide-grid arrangement according to the invention.
  • FIGS. 2A and 2B show a schematic sectional view and a schematic plan view of a first, general embodiment of a guide grid arrangement 10 according to the invention.
  • the guide grid arrangement 10 comprises a carrier ring 11 and a plurality of VTG guide vanes 12, which are rotatably mounted in the carrier ring 11.
  • the carrier ring 11 is formed here from a single sheet metal part 18 and has an inner edge 14 and an outer Edge 15 up.
  • the carrier ring 11 has a plurality of recesses 16 which, as shown by way of example in FIG. 2B, may be arranged at the same radial distances from the center of the carrier ring 11 and uniformly in the circumferential direction on the carrier ring 11.
  • the carrier ring 11 and thus also the sheet metal part 18 have a thickness D.
  • the VTG Leitschaufein 12 have a height H and in addition to the VTG Leitschaufein molded pintle 13 on. For rotatably supporting the VTG Leitschaufein 12 in the
  • Blade bearing ring 11 are each formed thereon pivot pin 13 inserted into the recesses 16 of the support ring 11.
  • the thickness D of the sheet metal part 18 is less than 75%, more preferably less than 60%, of the height H of the VTG guide rail 12. Typically, the thickness of the sheet metal part 18 is between 3 mm and 6 mm.
  • the flow area of the turbine can be optimally adjusted for each engine operating point.
  • the VTG guide vanes 12 are placed in a flat position to reduce the turbine flow area and allow for rapid boost buildup due to the faster flowing exhaust gases.
  • the VTG guide vanes 12 are brought into a steeper position in order to reduce the flow area of the turbine and to limit the boost pressure as a result of the more slowly flowing exhaust gases.
  • the guide grid arrangement 10 can therefore, for example, a high-temperature austenitic steel be made with high chromium and nickel content. To increase the strength, molybdenum, vanadium, tungsten, niobium, titanium or boron may additionally be added to the high-temperature austenitic steel. In addition, it is conceivable to manufacture the guide grid assembly 10 from a nickel-based alloy or any other material that is capable of withstanding the exhaust gas temperatures prevailing within the turbine-side section of the turbocharger.
  • FIG. 3 shows a schematic plan view of a further, exemplary embodiment of a guide grid arrangement 10 according to the invention.
  • a carrier ring 11 formed from a sheet metal part 18 is provided, in the recesses of which several VTG guide vanes 12 are rotatably mounted.
  • the carrier ring 11 has a plurality of grooves 17 attached to the outer edge 15 of the carrier ring 11, with the aid of which a rotationally secure attachment of the guide grid arrangement 10 in the turbine housing and / or in the bearing housing of the turbocharger is made possible.
  • FIG. 4 shows a schematic sectional view of a preferred embodiment of a guide grid arrangement 10 according to the invention.
  • a second carrier ring 19 formed from a sheet metal part 18 is provided herein.
  • the VTG Leitschaufein 12 are sandwiched between the two support rings 11 and 19, so that the VTG Leitschaufein 12 are rotatably supported by means of the molded thereon pivot pin 13 on both sides in the recesses 16 of the support rings 11 and 19.
  • FIG. 5 shows a schematic sectional view of a further, preferred embodiment of a guide-grid arrangement 10 according to the invention.
  • a single carrier ring 11 is provided, which is formed by three sheet-metal parts 18 stacked one above the other in a stack.
  • the resulting carrier ring 11 has congruently superimposed recesses 16, in which the VTG Leitschaufein 12 are rotatably supported by means of the molded thereon pivot pin 13.
  • FIG. 6 shows, by way of example, an isometric view of an exhaust-gas turbocharger 21 with a guide-grid arrangement 10 according to the invention.
  • the exhaust-gas turbocharger 21 has a turbine-side section 22.
  • the guide grid arrangement 10 according to the invention is arranged here within the turbine-side section 22 of the exhaust-gas turbocharger between a feed channel 23 for supplying exhaust gas and a rotatably mounted turbine rotor 24.
  • the guide grid arrangement does not necessarily have to be formed, as shown in the figures, with only one or two carrier rings, but of course may also have three or more carrier rings. It goes without saying that a single carrier ring can be formed not only from one or three sheet metal parts but from any number of stapeiförmig arranged sheet metal parts, depending on what requirements are placed on the support ring in terms of its thermo-mechanical behavior and its mechanical resilience.
  • the pivot pins of the VTG guide vanes do not necessarily have to be integrally formed integrally with the VTG guide vanes.
  • a single VTG vane can therefore also be formed by a separate pivot pin and a blade part, wherein the two components are rotatably connected to each other in a suitable manner.
  • a compound of pintle and blade part offers, for example, a Keyway, a taper pin connection, a screw connection, a welded joint, a solder joint or any other compound which is adapted to ensure a reliable, rotationally fixed connection of pivot pin and blade part at the prevailing within the turbine side portion of the turbocharger high temperatures.
  • the inner and outer edges of a carrier ring need not necessarily be circular.
  • the inner and / or the outer edge of the support ring may rather - for example, to realize an anti-rotation - also be polygonal or otherwise annular.
  • the recesses for supporting the VTG guide vanes need not be arranged at equal distances from the center of the carrier ring and uniformly in the circumferential direction on the carrier ring. Rather, the recesses for supporting the VTG Leitschaufein can be arranged in any manner on a support ring, as long as taking into account the installation conditions in the turbine-side section of the turbocharger results in a technically viable Leitgitteran ever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Control Of Turbines (AREA)

Abstract

L'invention concerne un ensemble grille directrice pour un turbocompresseur à gaz d'échappement avec turbine à géométrie variable (TGV) comprenant au moins un support annulaire réalisé à partir d'au moins une tôle et destiné au montage d'aubes directrices de TGV, lesdites aubes directrices étant montées à rotation dans des évidements d'un support annulaire. L'invention concerne également un turbocompresseur à gaz d'échappement avec turbine à géométrie variable et un procédé de fabrication d'un ensemble grille directrice.
EP09722558A 2008-03-18 2009-03-11 Ensemble grille directrice pour un turbocompresseur a gaz d'echappement, turbocompresseur a gaz d'echappement et procede de fabrication d'un ensemble grille directrice Withdrawn EP2288792A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008014680A DE102008014680A1 (de) 2008-03-18 2008-03-18 Leitgitteranordnung eines Abgasturboladers, Abgasturbolader und Verfahren zur Herstellung einer Leitgitteranordnung
PCT/EP2009/052821 WO2009115437A2 (fr) 2008-03-18 2009-03-11 Ensemble grille directrice pour un turbocompresseur à gaz d'échappement, turbocompresseur à gaz d'échappement et procédé de fabrication d'un ensemble grille directrice

Publications (1)

Publication Number Publication Date
EP2288792A2 true EP2288792A2 (fr) 2011-03-02

Family

ID=41091277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09722558A Withdrawn EP2288792A2 (fr) 2008-03-18 2009-03-11 Ensemble grille directrice pour un turbocompresseur a gaz d'echappement, turbocompresseur a gaz d'echappement et procede de fabrication d'un ensemble grille directrice

Country Status (8)

Country Link
US (1) US20110014032A1 (fr)
EP (1) EP2288792A2 (fr)
JP (1) JP2011515608A (fr)
KR (1) KR20100125427A (fr)
CN (1) CN101978137A (fr)
BR (1) BRPI0910301A2 (fr)
DE (1) DE102008014680A1 (fr)
WO (1) WO2009115437A2 (fr)

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ITUA20164308A1 (it) * 2016-06-13 2017-12-13 Nuovo Pignone Tecnologie Srl Assieme a geometria variabile per turbomacchina e turbomacchina comprendente detto assieme
DE202016103778U1 (de) 2016-07-13 2016-07-27 Bosch Mahle Turbo Systems Gmbh & Co. Kg Verstellring einer variablen Turbinengeometrie
DE102017118794A1 (de) * 2017-08-17 2019-02-21 Ihi Charging Systems International Gmbh Verstellbarer Leitapparat für eine Turbine, Turbine für einen Abgasturbolader und Abgasturbolader
KR20200111390A (ko) 2019-03-19 2020-09-29 현대자동차주식회사 터보차저의 베인 개도량 센싱 장치
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Also Published As

Publication number Publication date
KR20100125427A (ko) 2010-11-30
US20110014032A1 (en) 2011-01-20
WO2009115437A2 (fr) 2009-09-24
JP2011515608A (ja) 2011-05-19
BRPI0910301A2 (pt) 2015-09-29
WO2009115437A3 (fr) 2010-09-23
DE102008014680A1 (de) 2010-09-23
CN101978137A (zh) 2011-02-16

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