WO2013120588A1 - Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement et turbine pour un turbocompresseur à gaz d'échappement - Google Patents

Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement et turbine pour un turbocompresseur à gaz d'échappement Download PDF

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Publication number
WO2013120588A1
WO2013120588A1 PCT/EP2013/000337 EP2013000337W WO2013120588A1 WO 2013120588 A1 WO2013120588 A1 WO 2013120588A1 EP 2013000337 W EP2013000337 W EP 2013000337W WO 2013120588 A1 WO2013120588 A1 WO 2013120588A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
spacer element
turbine
insert part
exhaust gas
Prior art date
Application number
PCT/EP2013/000337
Other languages
German (de)
English (en)
Inventor
Thomas Ihli
Hans-Peter Oehl
Christian Trautmann
Tobias Scheuermann
Original Assignee
Ihi Charging Systems International 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 Ihi Charging Systems International Gmbh filed Critical Ihi Charging Systems International Gmbh
Publication of WO2013120588A1 publication Critical patent/WO2013120588A1/fr

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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

Definitions

  • the invention relates to an adjustable nozzle for a turbine of a
  • the adjustable guide serves to change a fluid flow, usually an exhaust gas flow of an internal combustion engine, to a turbine wheel of an exhaust gas turbocharger.
  • the variable nozzle includes a plurality of rotatable vanes positioned between a first insert of the variable nozzle and a second insert of the variable nozzle. With the help of the rotatability of the plurality of vanes, the fluid flow is on the
  • Turbine wheel can be conditioned. Between a first wall of the first insert part and a second wall of the second insert part, an inflow channel is formed, in which the plurality of guide vanes is arranged. To secure a defined distance between the first wall of the first insert part and the second wall of the second insert part spacer elements between the first insert part and the second insert part are provided. Due to the positioning of the
  • the invention is based on the object, an elimination of
  • the invention is based on an adjustable guide with a first insert part and a second insert part, wherein between a first wall of the first
  • an inflow channel is formed, in which a plurality of rotatable vanes and a spacer element are positioned.
  • a guide vane of the plurality of vanes is the
  • Spacer element designed receivable.
  • the spacer element is arranged at least partially in the guide vane in the inflow channel, it does not constitute a flow resistance in the flow path of the exhaust gas.
  • the flow resistance in the flow channel is induced exclusively by guide vanes arranged in the flow channel.
  • adjustable nozzle of the present invention is an even distribution of fluid flow induced forces on the variable nozzle, i. in particular to the plurality of vanes.
  • Guide vanes is a flow gap whose size, depending on the setting of the adjustable diffuser, is variable. In other words, each adjustment of the variable nozzle has a certain positioning of the plurality of
  • Flow gap has the smallest value. If a large pressure is to be achieved with a large fluid flow mass, for example when the internal combustion engine is operated at a full load point, the flow gap has the greatest value. For optimal flow of the turbine wheel, it is advantageous if the flow gaps of the adjustable nozzle for a setting each having an equal size.
  • the size of the flow gap is among other things by that of the
  • Fluid flow induced force on the respective vane influenced. That If different forces are present at the individual guide vanes of the adjustable guide device for adjustment due to different flow resistances, the flow gaps of the adjustable guide device are of different sizes, as a result of which a reduction in the turbine efficiency is ultimately brought about.
  • Turbine efficiency directly result.
  • the thus efficient operation of the turbine, and thus of the exhaust gas turbocharger, by the flow loss-reducing design further causes a reduction of fuel consumption and consequently a reduction of C0 2 emissions of a standing in connection with the exhaust gas turbocharger internal combustion engine.
  • a longitudinal axis of the spacer element corresponds to a second axis of rotation of the guide blade.
  • vanes of the plurality of vanes have a second axis of rotation about which they are rotatably mounted on the first insert part.
  • the guide vane is rotatable relative to the spacer element, so that mobility of the spacer element is avoidable, whereby a further securing of the distance between the first insert part and the second insert part can be brought about.
  • the guide vane has a sleeve which is arranged coaxially with the spacer element, the guide vane can be moved with the aid of the sleeve, with which the vane is advantageously non-positively and / or positively connected.
  • This offers on the one hand the advantage that a friction-reduced inner surface of the sleeve, which is positioned opposite a lateral surface of the spacer element, can be produced independently of the guide blade.
  • the sleeve may be made of a friction-reducing and high-temperature-resistant material, for example, ceramic, whereas the guide vane is made of the usual high-temperature resistant materials.
  • Spacer immovably connected at one end to the first insert part and the other end to the second insert part.
  • a mobility of the spacer element is excluded and ensures the provision of a defined distance between the first part and the second part.
  • a further advantage is that, in addition to the function to ensure a certain distance between the first insert part and the second insert part, a carrier function of the spacer element is brought about, in the sense that the first insert part completely supported and positioned by the spacer element and radially and axially is fixed.
  • Fig. 2 shows a detail of an axial section of an inventive
  • Adjustable diffuser with a vane and a
  • Fig. 3 is a section through the vane gem. Fig. 2.
  • a flow-through exhaust-gas guide section 2, shown in FIG. 1, of a turbine of an exhaust-gas turbocharger 1 is located in an exhaust-gas tract of a non-illustrated exhaust
  • the exhaust gas turbocharger 1 also has a not closer
  • the exhaust gas turbocharger 1 has a running gear 3, which comprises a not-shown compressor wheel for sucking and compressing combustion air, a turbine wheel 4 for expansion of exhaust gas and a compressor wheel with the turbine wheel 4 rotatably connecting shaft 5 having a first axis of rotation 6.
  • the shaft 5 is in
  • Air guide portion and the exhaust gas guide portion 2 is positioned.
  • an inlet channel 7 is formed in the exhaust gas guide section 2.
  • the inlet channel 7 is used to condition the exhaust gas, which puts the turbine wheel 4 in a rotating motion during operation of the internal combustion engine. With the help of the shaft 5, the compressor wheel is also rotated, so that it sucks in combustion air and compressed.
  • a spiral channel 8 is arranged in the exhaust gas guide section 2, which serves to provide a rotationally symmetrical flow. Furthermore, the spiral channel 8 is formed as a connecting channel between the inlet channel 7 and an inflow channel 9, which is positioned downstream of the spiral channel 8. Downstream of the inflow channel 9, a wheel chamber 10 is arranged in the exhaust gas guide section 2, in which the turbine wheel 4 is rotatably received. Downstream of the wheel chamber 10, the exhaust gas guide section 2 has an outlet channel 11 for
  • the exhaust gas can be conditioned with the aid of an adjustably designed diffuser 12, which in the
  • Exhaust gas guide section 2 is arranged.
  • FIG. 1 an adjustable nozzle 12 is shown according to the prior art.
  • the adjustable guide vane 12, the turbine wheel 4 is formed annularly comprehensive and has a first insert part 13, hereinafter called bearing ring, for receiving a plurality of vanes 14, which is provided for flow conditioning.
  • Each vane of the plurality of vanes 14 is rotatably mounted on the bearing ring 13, wherein each vane of the plurality of vanes 14 is a second
  • the bearing ring 13 is positioned in the exhaust gas guide section 2 such that the plurality of guide vanes 14 is arranged in the inflow channel 9.
  • the bearing ring 13 is positioned opposite a second insert member 15, hereinafter called the contour sleeve, which is designed for flow conditioning and simplified assembly of the nozzle 12.
  • the inflow channel 9 is formed in the region of the adjustable guide apparatus 12 between a first wall 19 of the bearing ring 13 and a second wall 20 of the contour sleeve 15.
  • spacer elements 16 are positioned in the inflow channel 9.
  • the spacer elements 16 are cylindrical and have a longitudinal axis 17.
  • FIG. 2 The section of an axial section of an adjustable guide apparatus 12 according to the invention, shown in FIG. 2, shows a guide blade 14 'of the plurality of guide blades 14, which is designed to receive the spacer element 16 in an absorbable manner.
  • the guide vane 14 ' has a cylindrical opening 21, which extends over an entire axial length L of
  • Guide vane 14 ' is formed extending.
  • the longitudinal axis 17 of the spacer element 16 corresponds to the second axis of rotation 18 of the guide blade 14'. So that the movability of the guide blade 14 'is ensured and the guide blade 14' is rotatable relative to the spacer element 16, a first diameter D1 of the opening 21 is greater than a second diameter D2 of the spacer element 16, wherein the first diameter D1 is larger by a minimum clearance MS as the second diameter D2 as shown in FIG.
  • the guide vane 14 'on a non-illustrated, advantageously cylindrical sleeve, which is arranged coaxially with the spacer element 16.
  • the sleeve itself is immovably connected to the vane 14 ', wherein a force, material and / or positive
  • connection between the vane 14 'and the sleeve may be provided.
  • the sleeve is received in the cylindrical opening 21 of the vane 14 ', wherein the sleeve, the spacer element 16 is formed axially partially and radially completely encompassing.
  • the sleeve is advantageously formed over the entire length L extending. Likewise, however, it could also be formed only over a portion of the length L.
  • the sleeve is made of a low-friction material, for example. Ceramic.
  • the spacer element 16 is at its first end 22, thus at one end, in the bearing ring 13 and at its second end 23, thus the other end, in the contour sleeve 15th
  • the bearing ring 13 has a first receiving opening 24 and the contour sleeve 15 has a second receiving opening 25.
  • the first receiving opening 24 and the second receiving opening 25 can each be designed to penetrate the bearing ring 13 or the contour sleeve 15 completely. In the embodiment shown in Fig. 2, the first receiving opening 24 and the second receiving opening 25, the bearing ring 13 and the contour sleeve 15 is not formed completely penetrating.
  • the spacer element 16 is firmly bonded to the contour sleeve 15 and the bearing ring 13.
  • the first receiving opening 24 of the bearing ring 13 the first receiving opening 24 of the bearing ring 13 the
  • the spacer element 16 can be non-positively and / or positively connected to the bearing ring 13 and the contour sleeve 15.
  • the adjustable nozzle 12 has to secure the distance A on three vanes 14 'of the plurality of vanes 14, which are each formed a spacer element 16 receivable.
  • the number of guide vanes 14 ', which are adapted to receive a spacer element 16 could be greater or smaller than three, but in practice the number of at least three
  • Distance elements 16 has proven to be sufficient for securing the distance A.
  • the spacer elements 16 are mounted on the bearing ring 13 and the contour sleeve 15.
  • the spacer element 16 can also be assigned a carrier function, in the sense that the contour sleeve 15 is completely supported and positioned by the spacer element 16 or fixed radially and axially.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement, qui comporte une première pièce rapportée (13) et une seconde pièce rapportée (15) opposée à la première pièce rapportée (13), un canal d'écoulement (9) étant formé entre une première paroi (19) de la première pièce rapportée (13) et une seconde paroi (20), située face à la première paroi (19), de la seconde pièce rapportée (15), et une pluralité d'aubes directrices (14) étant placées dans ce canal d'écoulement (9) pour évacuer les gaz d'échappement s'écoulant à travers la turbine, et un élément d'écartement (16) disposé de manière à garantir un écart (A) entre la première paroi (19) et la seconde paroi (20). Selon l'invention, au moins une aube directrice (14') de la pluralité d'aubes directrices (14) est conçue de manière à loger l'élément d'écartement (16).
PCT/EP2013/000337 2012-02-17 2013-02-05 Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement et turbine pour un turbocompresseur à gaz d'échappement WO2013120588A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012003213.7 2012-02-17
DE102012003213A DE102012003213A1 (de) 2012-02-17 2012-02-17 Verstellbarer Leitapparat für eine Turbine eines Abgasturboladers und Turbine für einen Abgasturbolader

Publications (1)

Publication Number Publication Date
WO2013120588A1 true WO2013120588A1 (fr) 2013-08-22

Family

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PCT/EP2013/000337 WO2013120588A1 (fr) 2012-02-17 2013-02-05 Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement et turbine pour un turbocompresseur à gaz d'échappement

Country Status (2)

Country Link
DE (1) DE102012003213A1 (fr)
WO (1) WO2013120588A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018137882A1 (fr) * 2017-01-25 2018-08-02 Ihi Charging Systems International Gmbh Dispositif directeur réglable pour une section d'évacuation des gaz d'échappement d'un turbocompresseur à gaz d'échappement et section d'évacuation des gaz d'échappement pour un turbocompresseur à gaz d'échappement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015216306A1 (de) * 2015-08-26 2017-03-02 Bosch Mahle Turbo Systems Gmbh & Co. Kg Leitschaufel für eine variable Turbinengeometrie, Verfahren zur Herstellung einer Leitschaufel und Turbolader mit einer Leitschaufel
DE102017118795A1 (de) 2017-08-17 2019-02-21 Ihi Charging Systems International Gmbh Verstellbarer Leitapparat für eine Turbine, Turbine für einen Abgasturbolader und Abgasturbolader

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1965037A1 (fr) * 2007-03-02 2008-09-03 Siemens Aktiengesellschaft Support axial et radial de la bague de réglage d'un appareil de guidage d'entrée pour machine à détente à gaz chaud
DE102007029004A1 (de) 2007-06-23 2008-12-24 Ihi Charging Systems International Gmbh Abgasturbolader für eine Brennkraftmaschine
WO2009092792A2 (fr) * 2008-01-24 2009-07-30 Avl List Gmbh Turbocompresseur
DE102008046009A1 (de) * 2008-09-05 2010-03-11 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladeeinrichtung
EP2354468A2 (fr) * 2010-01-29 2011-08-10 United Technologies Corporation Buse à aubes rotatives pour turbine à écoulement radial

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US4657476A (en) * 1984-04-11 1987-04-14 Turbotech, Inc. Variable area turbine
JP2001289050A (ja) * 1999-05-20 2001-10-19 Hitachi Ltd 可変容量ターボ過給機
JP2002129970A (ja) * 2000-10-20 2002-05-09 Mitsubishi Heavy Ind Ltd 可変容量タービン
US7137778B2 (en) * 2004-04-12 2006-11-21 Borgwarner Inc. Variable turbine geometry turbocharger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1965037A1 (fr) * 2007-03-02 2008-09-03 Siemens Aktiengesellschaft Support axial et radial de la bague de réglage d'un appareil de guidage d'entrée pour machine à détente à gaz chaud
DE102007029004A1 (de) 2007-06-23 2008-12-24 Ihi Charging Systems International Gmbh Abgasturbolader für eine Brennkraftmaschine
WO2009092792A2 (fr) * 2008-01-24 2009-07-30 Avl List Gmbh Turbocompresseur
DE102008046009A1 (de) * 2008-09-05 2010-03-11 Bosch Mahle Turbo Systems Gmbh & Co. Kg Ladeeinrichtung
EP2354468A2 (fr) * 2010-01-29 2011-08-10 United Technologies Corporation Buse à aubes rotatives pour turbine à écoulement radial

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018137882A1 (fr) * 2017-01-25 2018-08-02 Ihi Charging Systems International Gmbh Dispositif directeur réglable pour une section d'évacuation des gaz d'échappement d'un turbocompresseur à gaz d'échappement et section d'évacuation des gaz d'échappement pour un turbocompresseur à gaz d'échappement

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Publication number Publication date
DE102012003213A1 (de) 2013-08-22

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