WO2018137882A1 - 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 - Google Patents

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 Download PDF

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Publication number
WO2018137882A1
WO2018137882A1 PCT/EP2018/000012 EP2018000012W WO2018137882A1 WO 2018137882 A1 WO2018137882 A1 WO 2018137882A1 EP 2018000012 W EP2018000012 W EP 2018000012W WO 2018137882 A1 WO2018137882 A1 WO 2018137882A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
insert part
adjustable
guide
wall
Prior art date
Application number
PCT/EP2018/000012
Other languages
German (de)
English (en)
Inventor
Thorben Kotzbacher
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 WO2018137882A1 publication Critical patent/WO2018137882A1/fr

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

Definitions

  • the invention relates to an adjustable nozzle for an exhaust gas guide portion of an exhaust gas turbocharger of the type specified in the preamble of claim 1 and an exhaust gas guide portion of an exhaust gas turbocharger according to claim 10.
  • 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. The spacer elements each have an equal distance from a longitudinal axis of the adjustable diffuser. Overall, evenly spaced spacer elements are provided to avoid an increase of flow losses over a circumference of the adjustable nozzle.
  • the invention is based on the object to provide an adjustable nozzle for an exhaust gas guide section of an exhaust gas turbocharger, which is characterized by a high functional stability.
  • Another object of the invention is the disclosure of an improved exhaust gas guide section for an exhaust gas turbocharger. This task is accomplished by an adjustable nozzle for a
  • Patent claim 1 and by an exhaust gas guide section for an exhaust gas turbocharger with the features of claim 10.
  • Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the remaining claims.
  • the adjustable guide device is provided for an exhaust gas guide section of an exhaust gas turbocharger. It has a first insert part and a second insert part arranged opposite the first insert part. An inflow channel is formed between a first wall of the first insert part and a second wall of the second insert part arranged opposite this first wall, wherein a plurality of guide vanes for deflecting exhaust gas flowing through the exhaust gas guide section are rotatably positioned in this inflow channel. To secure a functional distance, a spacer element is arranged between the first wall and the second wall, which is positioned between the first wall and the second wall.
  • the spacer element has a longitudinal axis which is positioned at a radial distance to a longitudinal axis of the nozzle and at a radial distance to a rotational axis of the guide vane.
  • an additional element is arranged at a distance from the spacer element between the first insert part and the second insert part in order to bring about a functional stability.
  • the additional element is arranged in a distance to the radial distance, whereby a further increased functional stability can be achieved.
  • the additional element and the spacer element are not arranged on a common radial axis, but the additional element is arranged offset in the circumferential direction to the spacer element, wherein a longitudinal axis of the additional element is positioned on a virtual extension of a blade longitudinal axis of the vane.
  • the positioning of the additional element thus virtually at a flow inlet of the exhaust gas into a flow channel formed between two vanes, leads to an improved flow deflection of the exhaust gas into the flow channel. Since the additional element is firmly connected to the first insert part and the second insert part, a preferred blade position of the plurality of guide vanes is to be determined, with which the additional element is to be positioned on the virtual extension of the blade longitudinal axis.
  • the spacer element is arranged with a minimum distance from the guide blade.
  • the advantage is a further increase in functional stability. Basically, it is desirable to position the spacer with its longitudinal axis at a minimum distance from a rotational axis of the vane, with a coaxial preferably to be preferred
  • Positioning would be. However, this positioning is dependent on various factors, including the bearing of the spacer in the adjustable vane, which may lead to jamming of the vane on the
  • each spacer element is a
  • the spacer element and / or the additional element has a scoop-profile-shaped cross-section. This leads to a reduction of a flow resistance of the spacer element or of the additional element, resulting in an increase in efficiency of the exhaust gas turbocharger over an example.
  • Circular cross-section of the spacer element and / or the additional element has a scoop-profile-shaped cross-section.
  • Combustion engine occurs, it is advantageous to align the spacer element and / or the additional element with its blade-shaped cross-section in the direction of the plurality of vanes with fully open flow cross-section.
  • turbulences preferably occur on the elements, which can lead to a reduction in the efficiency of the exhaust gas turbocharger. This can be achieved with the orientation of the spacer elements and / or additional elements in the direction of the majority of the guide vanes, such as when fully open
  • a second aspect of the invention relates to an exhaust gas guide section for a
  • Exhaust gas turbocharger wherein the exhaust gas guide portion comprises an adjustable nozzle according to one of claims 1 to 9.
  • the exhaust gas guide section according to the invention leads to a high level of operational reliability of the exhaust gas turbocharger fitted with it and to the avoidance of exhaust emission leaks, as may occur due to deformations and inadequate rigidity of the adjustable diffuser of the prior art. This has an increase in the efficiency of the exhaust gas turbocharger immediately result.
  • the thus efficient operation of the exhaust gas turbocharger by the flow loss-reduced design of the adjustable nozzle further causes a reduction of fuel consumption and consequently a reduction of CO 2 emissions of an associated with the exhaust gas turbocharger internal combustion engine.
  • Fig. 1 in a schematic longitudinal sectional view of a diffuser gem.
  • FIG. 2 in a schematic longitudinal sectional view of the diffuser gem. Fig. 1 in operation,
  • Fig. 3 is a schematic longitudinal sectional view of an inventive
  • Fig. 4 in a schematic longitudinal sectional view of the diffuser gem. Fig. 3 in operation, and
  • Fig. 5 in a cross-sectional view of the nozzle according to the invention.
  • FIG. 1 adjustable nozzle 1 An illustrated in Fig. 1 adjustable nozzle 1 according to the prior art is provided in a flow-through exhaust guide section 2 of an exhaust gas turbocharger 3 in an exhaust tract of an internal combustion engine, not shown, which is a gasoline engine or a diesel engine.
  • the exhaust gas turbocharger 3 further comprises a flow-through, not shown
  • the exhaust gas turbocharger 3 comprises a running gear, not shown in more detail, which has a compressor wheel for sucking and compressing combustion air, a turbine wheel for expansion of exhaust gas and a compressor wheel rotatably connected to the turbine shaft.
  • the shaft is rotatably mounted in the bearing portion of the exhaust gas turbocharger 3, which between the air guide portion and the
  • Exhaust gas guide section is positioned.
  • a non-illustrated inlet channel is formed in the exhaust gas guide section.
  • the inlet channel is used to condition the exhaust gas, which puts the turbine wheel in a rotating motion during operation of the internal combustion engine.
  • Compressor also rotated, so that it sucks in combustion air and compressed.
  • a not dargesteller spiral channel is arranged in the exhaust gas guide section 2, which serves to provide a rotationally symmetrical flow. Furthermore, the spiral channel is designed as a connecting channel between the inlet channel and an inflow channel 4, which is positioned downstream of the spiral channel.
  • Exhaust gas guide section 2 is arranged, in which the turbine wheel is rotatable
  • the exhaust gas guide section 2 Downstream of the wheel chamber, the exhaust gas guide section 2 an outlet channel, not shown, for the escape of the exhaust gas from the
  • the exhaust gas can be conditioned with the aid of the adjustably configured guide apparatus 1, which is arranged in the inflow channel 4.
  • the adjustable nozzle 1, the turbine wheel is annularly formed and has a first insert part 5, hereinafter called bearing ring, for receiving a plurality of vanes 6, which is provided for flow conditioning.
  • Each vane of the plurality of vanes 6 is rotatably mounted on the bearing ring 5, wherein each vane of the plurality of vanes 6 has an axis of rotation 7.
  • the bearing ring 5 is positioned in the exhaust gas guide section 2 such that the plurality of guide vanes 6 is arranged in the inflow channel 4.
  • the bearing ring 5 is positioned opposite a second insert part 8, hereinafter called the contour sleeve, which for flow conditioning and simplified assembly of the distributor 1 is trained.
  • the inflow channel 4 is formed in the region of the adjustable distributor 1 between a first wall 9 of the bearing ring 5 and a second wall 10 of the contour sleeve 8.
  • Spacer elements 11 are positioned with a first longitudinal axis 12 in the inflow channel 4.
  • the spacers 11 are cylindrical and are immovably received in the bearing ring 5 and 8 in the contour of the sleeve.
  • the illustrated in Fig. 1 adjustable nozzle 1 is in a state out of service. In other words, that means that the adjustable nozzle 1 is not acted upon by hot exhaust gas of the internal combustion engine.
  • the adjustable distributor 1 As soon as the adjustable distributor 1 is flowed through by exhaust gas of the internal combustion engine, depending on a temperature of the exhaust gas there is a risk of deformation of the bearing ring 5, the contour sleeve 8 and in particular of the spacer elements 11, which are completely surrounded by the exhaust gas.
  • the functional distance A changes due to the deformation, whereby deviating distances AP, AM are formed from the function distance A, s. Fig. 2.
  • the first deviating distance AP indicates a distance which is greater than the working distance A and the second deviating distance AM denotes a distance which is smaller than the working distance A.
  • FIG. 3 an inventive adjustable nozzle 1 is shown out of service.
  • the adjustable guide apparatus 1 has, in addition to the spacer elements eleventh
  • Additional elements 13 with a second longitudinal axis 14.
  • the additional elements 13 are arranged to the spacer elements 11 in a radial first distance DR1 between the bearing ring 5 and the contour sleeve 8. They are positioned on a side facing away from the guide vanes 6 side of the spacer elements 11.
  • Fig. 4 shows a schematic representation of the adjustable guide 1 according to the invention in operation.
  • the additional element 13 is in receiving openings 15 of the bearing ring 5 and the
  • Contoured sleeve 8 immovable.
  • the receiving openings 15 are formed the bearing ring 5 and the contour sleeve 8 completely penetrating. Likewise, the receiving openings 15, the bearing ring 5 and / or the contour sleeve 8 may not be formed completely penetrating.
  • the additional element 13 is firmly bonded to the contour sleeve 8 and the bearing ring 5.
  • the additional element 13 can be non-positively and / or positively connected to the bearing ring 5 and the contour sleeve 8.
  • nozzle according to the invention is shown in a cross section.
  • the plurality of vanes 6 are depicted in a first position, in which the vanes are shown in a solid line, and in a second position, in which the vanes are shown with a dashed line.
  • the two positions are adjusted in dependence on a rotation of the guide vane 6 about the axis of rotation 7. Between each two vanes 6 is a variable
  • Throughflow 20 fully open. In other words, it has a maximum possible value.
  • the spacer element 11 is arranged on a blade back surface 17 of the guide vane 6 facing away from a third longitudinal axis 16 of the adjustable diffuser 1 in a first radius R1 starting from the second longitudinal axis 14 and with a radial second distance DR2 to the axis of rotation 7. It is to be positioned so that an unobstructed movement of the guide vane 6 necessary adjustment area 18 is not equipped with the spacer element 11 or additional element 13.
  • Adjustment range 18 is specially marked.
  • the additional element 13 is offset relative to the spacer element 11 by an angle ⁇ in a second radius R2 to the third longitudinal axis 16. Likewise, the additional element 13 and the spacer element 11 on a common, the third Be arranged longitudinal axis 16 transverse axis.
  • the arrangement of the additional elements 13 relative to the spacer elements 11, each spacer element 11 is assigned an additional element 13, can be used in space and thermal and mechanical
  • the spacer elements 11 and the additional elements 13 on a blade profile-shaped cross-section, whereby a reduction of a flow resistance of the elements 1 1, 13 is brought about.

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

Abstract

L'invention concerne un dispositif directeur réglable pour une section d'évacuations des gaz d'échappement d'un turbocompresseur à gaz d'échappement, ayant une première partie d'insertion (5) et une deuxième partie d'insertion (8) disposée à l'opposé de la première partie d'insertion (5), un canal d'amenée (4) étant formé entre une première paroi (9) de la première partie d'insertion (5) et une deuxième paroi (10) de la deuxième parte d'insertion (8), disposée à l'opposé de ladite première paroi (9), et une pluralité d'aubes de guidage (6) étant positionnées de manière rotative dans ce canal d'amenée (4) pour l'évacuation des gaz d'échappement s'écoulant à travers la section d'évacuation de gaz d'échappement (2), et ayant un élément d'écartement (11), lequel est positionné entre la première paroi (9) et la deuxième paroi (10) pour assurer un écart de fonctionnement (A), l'élément d'écartement (11) comprenant un axe longitudinal (12), lequel est positionné à une distance radiale (R1) de l'axe longitudinal du dispositif directeur (1) et à une distance radiale (DR1) d'un axe de rotation (7) des aubes de guidage (7), un élément supplémentaire (13) distant de l'élément d'écartement (11) étant disposé entre la première partie d'insertion (5) et la deuxième partie d'insertion (8) pour l'obtention d'une stabilité de fonctionnement. L'invention concerne en outre une section d'évacuation de gaz d'échappement (2) pour un turbocompresseur à gaz d'échappement (3).
PCT/EP2018/000012 2017-01-25 2018-01-09 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 WO2018137882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017101386.5A DE102017101386A1 (de) 2017-01-25 2017-01-25 Verstellbarer Leitapparat für einen Abgasführungsabschnitt eines Abgasturboladers und Abgasführungsabschnitt für einen Abgasturbolader
DE102017101386.5 2017-01-25

Publications (1)

Publication Number Publication Date
WO2018137882A1 true WO2018137882A1 (fr) 2018-08-02

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PCT/EP2018/000012 WO2018137882A1 (fr) 2017-01-25 2018-01-09 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

Country Status (2)

Country Link
DE (1) DE102017101386A1 (fr)
WO (1) WO2018137882A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040766A (en) * 1975-02-14 1977-08-09 Hitachi, Ltd. Gate protecting device for hydraulic machines
DE102007029004A1 (de) 2007-06-23 2008-12-24 Ihi Charging Systems International Gmbh Abgasturbolader für eine Brennkraftmaschine
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
WO2012027766A1 (fr) * 2010-08-30 2012-03-08 Andritz Hydro Gmbh Distributeur pour turbomachines
DE102011079580A1 (de) * 2011-07-21 2013-01-24 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable Turbinen-/Verdichtergeometrie und zugehöriges Herstellverfahren
WO2013120588A1 (fr) * 2012-02-17 2013-08-22 Ihi Charging Systems International Gmbh Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement et turbine pour un turbocompresseur à gaz d'échappement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9556882B2 (en) 2011-05-10 2017-01-31 Borgwarner Inc. Turbocharger with variable turbine geometry

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040766A (en) * 1975-02-14 1977-08-09 Hitachi, Ltd. Gate protecting device for hydraulic machines
DE102007029004A1 (de) 2007-06-23 2008-12-24 Ihi Charging Systems International Gmbh Abgasturbolader für eine Brennkraftmaschine
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
WO2012027766A1 (fr) * 2010-08-30 2012-03-08 Andritz Hydro Gmbh Distributeur pour turbomachines
DE102011079580A1 (de) * 2011-07-21 2013-01-24 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable Turbinen-/Verdichtergeometrie und zugehöriges Herstellverfahren
WO2013120588A1 (fr) * 2012-02-17 2013-08-22 Ihi Charging Systems International Gmbh Distributeur réglable pour la turbine d'un turbocompresseur à gaz d'échappement et turbine pour un turbocompresseur à gaz d'échappement

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