EP1925784B1 - Turbocompresseur comprenant un dispositif doté d'une buse variable - Google Patents

Turbocompresseur comprenant un dispositif doté d'une buse variable Download PDF

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Publication number
EP1925784B1
EP1925784B1 EP08152209A EP08152209A EP1925784B1 EP 1925784 B1 EP1925784 B1 EP 1925784B1 EP 08152209 A EP08152209 A EP 08152209A EP 08152209 A EP08152209 A EP 08152209A EP 1925784 B1 EP1925784 B1 EP 1925784B1
Authority
EP
European Patent Office
Prior art keywords
ring
housing
turbocharger according
variable nozzle
exhaust housing
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.)
Expired - Lifetime
Application number
EP08152209A
Other languages
German (de)
English (en)
Other versions
EP1925784A1 (fr
Inventor
Lorrain Sausse
Denis Jeckel
Georgio Figura
Eric Dechanet
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.)
Honeywell International Inc
Original Assignee
Honeywell International Inc
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Filing date
Publication date
Application filed by Honeywell International Inc filed Critical Honeywell International Inc
Priority claimed from EP02762674A external-priority patent/EP1543220B1/fr
Publication of EP1925784A1 publication Critical patent/EP1925784A1/fr
Application granted granted Critical
Publication of EP1925784B1 publication Critical patent/EP1925784B1/fr
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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods

Definitions

  • the present invention relates to a turbocharger according to the preamble of claim 1 comprising a variable nozzle device.
  • variable nozzle device comprising nozzle passages of variable geometry.
  • the nozzle passages are formed between vanes arranged circumferentially around the turbine between an inner nozzle wall and an outer nozzle wall.
  • the vanes are pivotable in order to provide different configurations of the nozzle passages and thus to control the exhaust gas flow driving the turbine.
  • turbocharger comprising a variable nozzle mechanism formed as a cartridge coupled to a center housing of the turbocharger, wherein the exhaust housing is mounted to the cartridge and made of sheet metal.
  • turbocharger in particular a turbocharger more efficiently produced and maintained and having increased reliability.
  • turbocharger according to the features defined in claim 1.
  • Preferable embodiments of such a turbocharger are set forth in the subclaims.
  • An advantage of the invention set forth in claim 1 is in particular that the transmission of a mechanically and thermally created load from the exhaust housing to the components of the variable nozzle device is efficiently avoided. This is achieved by a construction in which the exhaust housing is mechanically and/or thermally decoupled from variable nozzle device.
  • the exhaust housing of the turbocharger is mounted directly to the center housing of the turbocharger carrying a shaft with the turbine wheel, so that both housings define an inner space in which the variable nozzle device and the turbine wheel are located.
  • the exhaust housing of the turbocharger comprises preferably a gas inlet portion attached to the center housing and a gas outlet portion encompassing with an axially extending clearance a gas outlet portion of the variable nozzle device.
  • the gas inlet portion of the exhaust housing preferably comprises a flange member axially abutted via a sealing element to the center housing and mounted thereto by a fastening member or means.
  • the gas outlet portion of the variable nozzle device can be provided with a circumferential recess for accommodating a piston ring avoiding a gas leakage from the gas inlet side of the exhaust housing to the gas outlet side thereof.
  • a circumferential recess for accommodating a piston ring avoiding a gas leakage from the gas inlet side of the exhaust housing to the gas outlet side thereof.
  • at least one further circumferential recess can be formed in the gas outlet portion of the exhaust housing between the gas inlet side of said exhaust housing and the piston ring.
  • variable nozzle device of the turbocharger comprises an annular arrangement of vanes between a nozzle ring and an outer ring, wherein the outer ring is integrally formed with a peripheral ring fitted on the nozzle ring and fixedly mounted to the center housing.
  • the vanes are pivotally supported on the nozzle ring and the nozzle ring is preferably axially urged by the peripheral ring against an annular disc member supported on the center housing.
  • the construction of the turbocharger according to the invention can provide that the gas inlet portion of the exhaust housing encompasses with a further axially extending clearance the peripheral ring of the variable nozzle device.
  • the peripheral ring of the variable nozzle device can be nevertheless abutted against the same sealing element through which the flange member of the exhaust housing is secured to the center housing.
  • the shaft is supported on a bearing system within the center housing 1 which although particularly illustrated in Fig. 1 is not described in detail.
  • On the left side in Fig. 1 only a backplate 7 and a compressor impeller 9 of the turbocharger are illustrated, whereas on the right side of the center housing 1 in Fig. 1 the variable nozzle device is shown in more detail.
  • variable nozzle device includes a basically ring-shaped insert 11 as an integral member comprising a peripheral ring 13 and an outer ring 15 connected with the peripheral ring by means of leg portions 17.
  • the peripheral ring 13 of the ring shaped insert 11 is fitted on a step portion 19 of the center housing 1 and mounted thereto by means of bolts 21 (shown in Fig. 1 ) arranged in a circumferentially spaced manner and secured in corresponding holes of the center housing 1.
  • a nozzle ring 23 is fitted for carrying a plurality of vane pins 25 arranged on the nozzle ring circumferentially around the turbine 5 and fixedly mounted to vanes 27 (as shown in Fig. 1 ).
  • the leg portions 17 fulfill the function of spacers defining a nozzle space between the nozzle ring 23 forming an inner wall of the nozzle and the outer ring 15 of the ring shaped insert which forms an outer wall of the nozzle.
  • the other end of each vane pin 25 is attached to a vane arm 29 preferably by welding.
  • the vane arms 29 are received in slots formed in the inner periphery of an unison ring 31 which is rotatably arranged in order to pivot the vane arms 29, the vane pins and finally the vanes 27 attached thereto.
  • the unison ring 31 is supported with its inner periphery on circumferentially spaced rollers 33 best shown in Fig. 3 .
  • the rollers are rotatably mounted on dowels 35 being rotatably supported in corresponding holes formed in the nozzle ring 23.
  • the length of the dowels 35 is such that although they can perform slight axial movement toward the center housing 1 the maximum distance between the corresponding end of the dowel and the center housing is such that the rollers 33 cannot become disengaged and remain locked between the center housing and the nozzle ring.
  • an actuating arm 37 engaging with one of the slots in the inner periphery of the unison ring 31 is connected via an actuating rod 39 to an actuator crank 41.
  • variable nozzle device which thus represents a kind of a cartridge attached to the center housing 1 by means of the bolts 21.
  • the nozzle ring 23 is axially clamped by a leg step portion 43 against an annular disc member 45 axially supported on the center housing 1.
  • a turbine housing or exhaust housing 47 is mounted to the center housing 1 by means of v-bands or an equivalent fastening member 49 as shown in each of Figs. 1 to 6 .
  • the fastening member 49 presses a flange member 51 of the inlet portion 53 of the exhaust housing against another flange portion of the center housing as can be best seen in Fig. 6 .
  • the inlet portion 53 forms the volute of the exhaust housing and delivers exhaust gas to the nozzle 28 as particularly illustrated by Fig. 2 .
  • the turbine housing is only axially in contact with the center housing 1 through the sealing device 55, the fastening member 49 is such that it also provides a reliable positioning of the exhaust housing also in radial direction.
  • the exhaust housing does not need any additional fixation means.
  • the mounting location of the flange member 51 of the exhaust housing and the peripheral ring 13 of the ring shaped insert is such that an axially extending clearance 57 is established therebetween as best seen in Fig. 6 .
  • Another radially extending portion 59 of the exhaust housing is axially spaced from the peripheral ring in order to provide another radially extending clearance 61 by means of which any contact between the exhaust housing and the ring shaped insert 11 of the variable nozzle device is avoided.
  • An outer gas outlet portion 63 of the exhaust housing 47 is formed as a sleeve encompassing an inner gas outlet portion 65 of the variable nozzle device, said portion 65 being formed as an axial tubular extension of the insert's outer ring 15. Between these two portions there is an axially extending clearance of preferably 0.05 - 0.15 mm, which is small enough to avoid gas leakage and in the same time big enough to provide appropriate mechanical decoupling between the exhaust housing and the ring shaped insert 11.
  • sealing elements including a piston ring 67 interposed in a recess formed in the inner gas outlet portion 65, as well as two recesses 69 formed in the outer gas outlet portion of the exhaust housing and serving as means for damping the turbulence of gas leaking from the exhaust housing.
  • Figs. 1 to 6 illustrating an embodiment of the present invention reveal also further details of the turbocharger construction.
  • Fig. 5 shows a locking dowel 24 which prevents the nozzle ring 23 from rotation in relation to the center housing 1.
  • Fig. 3 shows an additional elastic sealing member 60 closing the clearance 61 without impairing the mechanical and thermal decoupling between the insert and the exhaust housing.
  • one aspect of the present invention is to mechanically and/or thermally decouple the exhaust housing from the variable nozzle device, since the exhaust housing is subject to high mechanical and/or thermal loads.
  • the compact hut-like insert accommodating the nozzle ring and thus forming a cartridge including all nozzle components helps to prevent nozzle component deformation and consequently prevents sticking or binding of the vanes.
  • the exhaust housing encloses completely the cartridge of the variable nozzle device and the peripheral ring thereof is axially aligned with the flange member of the exhaust housing so that both the peripheral ring and the flange member can be abutted against one and the same radially extending sealing member 55 supported on a flange portion of the center housing
  • other modifications or configurations of the mounting arrangement for the variable nozzle device cartridge and the exhaust housing to the center housing are possible.
  • bolts 21 may be eliminated and the complete variable nozzle device coupled to the center housing by use of indirect contact provided by fastening member 49.
  • the periphery of the center housing can be provided with an inner recess in which the peripheral ring 13 engages.
  • variable nozzle device as including a nozzle ring 23 fitted for carrying a plurality of vane pins 25 arranged on the nozzle ring circumferentially around the turbine 5 and fixedly mounted to pivoting vanes 27, other modifications or configurations of the variable nozzle device are possible.
  • the vanes could be of the known type of vane that control the exhaust gas flow by sliding radially and/or axially rather than, or in addition to, using a pivoting motion.
  • the exhaust housing can be for example produced of a sheet metal or by a simplified casting method, for example by thin casting technology using lower grades of exhaust housing material.

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

Claims (16)

  1. Turbocompresseur comprenant :
    un boîtier central (1) ;
    un boîtier d'échappement (47) fixé au boîtier central (1) ;
    un ensemble de cartouche d'ajutage variable positionné entre le boîtier central (1) et le boîtier d'échappement (47), ledit ensemble de cartouche d'ajutage variable comprenant :
    une couronne d'ajutage (23) ;
    un insert (11) ayant une couronne externe (15) ;
    des pieds (17) pour maintenir un espace prédéterminé entre ladite couronne d'ajutage (23) et ladite couronne externe (15) ;
    une pluralité d'ailettes (27) situées dans ledit espace entre ladite couronne d'ajutage (23) et
    ladite couronne externe (15) ;
    une pluralité de clavettes d'ailettes (25) fixées respectivement auxdites ailettes (27) et agencées à rotation dans des trous de ladite couronne d'ajutage (23) ;
    des bras d'ailette (29) situés dans le côté de ladite couronne d'ajutage (23) en regard desdites ailettes (27) et fixés auxdites clavettes d'ailettes (25) ;
    une couronne d'actionnement (31) supportée à rotation sur ladite couronne d'ajutage (23) ;
    ladite couronne d'actionnement (31) ayant des fentes dans lesquelles lesdits bras d'ailette (29) s'engagent afin d'entraîner en rotation lesdites ailettes (27) par une rotation de ladite couronne d'actionnement (31) ;
    caractérisé par
    une pluralité de rouleaux (33) montés à rotation sur des chevilles (35), lesdites chevilles (35) étant supportées dans des trous correspondants formés dans ladite couronne d'ajutage (23) ;
    ladite couronne d'actionnement (31) étant supportée à rotation sur sa périphérie interne par lesdits rouleaux (33) ; et
    ledit ensemble de cartouche d'ajutage variable formant une unité modulaire et étant prévu pour être assemblé indépendamment dudit boîtier central (1) et dudit boîtier d'échappement (47) sous forme d'organe séparé.
  2. Turbocompresseur selon la revendication 1, comprenant en outre un bras d'actionnement (37), une tige d'actionnement (39) et une manivelle d'actionnement (41) qui sont fixés au boîtier central (1) séparément dudit ensemble de cartouche d'ajutage variable.
  3. Turbocompresseur selon la revendication 1 ou 2, dans lequel lesdits rouleaux (33) comprennent des gorges circonférentielles, ladite couronne d'actionnement (31) étant engagée avec lesdites gorges circonférentielles formées dans lesdits rouleaux (33).
  4. Turbocompresseur selon l'une quelconque des revendications 1 à 3, dans lequel ladite couronne d'actionnement est supportée axialement par lesdits rouleaux (33).
  5. Turbocompresseur selon l'une quelconque des revendications 1 à 4, dans lequel ledit insert (11) est formé en tant qu'organe intégral.
  6. Turbocompresseur selon l'une quelconque des revendications 1 à 5, dans lequel lesdits bras d'ailette (29) sont attachés auxdites clavettes d'ailettes (25) par soudage.
  7. Turbocompresseur selon l'une quelconque des revendications 1 à 6, dans lequel ledit insert (11) en forme de couronne peut être attaché audit boîtier central (1).
  8. Turbocompresseur selon l'une quelconque des revendications 1 à 7, dans lequel une couronne périphérique (13) dudit insert (11) en forme de couronne est espacée axialement du boîtier d'échappement (47), de manière à éviter tout contact entre le boîtier d'échappement et la couronne périphérique (13).
  9. Turbocompresseur selon l'une quelconque des revendications 1 à 8, dans lequel ledit boîtier d'échappement (47) est monté directement sur ledit boîtier central (1) portant un arbre (3) avec une roue de turbine (5), de sorte que les deux boîtiers (1, 47) définissent un espace interne à dans lequel ledit ensemble de cartouche d'ajutage variable et ladite roue de turbine (5) sont situés.
  10. Turbocompresseur selon l'une quelconque des revendications 1 à 9, dans lequel ledit boîtier d'échappement (47) comprend une portion d'entrée de gaz (53) attachée audit boîtier central (1) et une portion de sortie de gaz (63) englobant, avec un dégagement s'étendant axialement, une portion de sortie de gaz (65) de l'ensemble de cartouche d'ajutage variable.
  11. Turbocompresseur selon la revendication 10, dans lequel la portion d'entrée de gaz (53) du boîtier d'échappement (47) comprend un organe de bride (51) en butée axiale par le biais d'un élément d'étanchéité (55) avec le boîtier central (1) et monté sur celui-ci par un organe d'attache (49).
  12. Turbocompresseur selon l'une quelconque des revendications 1 à 11, comprenant en outre un système d'étanchéité (65, 67) destiné à éviter une fuite de gaz entre le boîtier d'échappement (47) et l'ensemble de cartouche d'ajutage variable.
  13. Turbocompresseur selon la revendication 12, dans lequel le système d'étanchéité (65, 67) comprend un retrait circonférentiel formé dans ladite portion de sortie de gaz (65) de l'ensemble de cartouche d'ajutage variable et contenant un segment de piston (67), comprenant en outre au moins un autre retrait circonférentiel (69) formé dans ladite portion de sortie de gaz (63) dudit boîtier d'échappement (47) et ouverte sur ledit dégagement s'étendant axialement entre le côté d'entrée de gaz dudit boîtier d'échappement (47) et le segment de piston (67).
  14. Turbocompresseur selon l'une quelconque des revendications 1 à 13, dans lequel ladite couronne d'ajutage est poussée axialement par la couronne périphérique (13) contre un organe de disque annulaire (45) supporté sur ledit boîtier central (1).
  15. Turbocompresseur selon l'une quelconque des revendications 10 à 14, dans lequel ladite portion d'entrée de gaz (53, 51) du boîtier d'échappement (47) englobe, avec un autre dégagement s'étendant axialement (57), la couronne périphérique (13) dudit ensemble de cartouche d'ajutage variable.
  16. Turbocompresseur selon l'une quelconque des revendications 11 à 15, dans lequel ladite couronne périphérique (13) est en butée contre le même élément d'étanchéité (55) par le biais duquel l'organe de bride (51) du boîtier d'échappement (47) est fixé sur le boîtier central (1).
EP08152209A 2002-09-05 2002-09-05 Turbocompresseur comprenant un dispositif doté d'une buse variable Expired - Lifetime EP1925784B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02762674A EP1543220B1 (fr) 2002-09-05 2002-09-05 Turbocompresseur comprenant un dispositif de tuyere variable

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02762674.6 Division 2002-09-05
EP02762674A Division EP1543220B1 (fr) 2002-09-05 2002-09-05 Turbocompresseur comprenant un dispositif de tuyere variable

Publications (2)

Publication Number Publication Date
EP1925784A1 EP1925784A1 (fr) 2008-05-28
EP1925784B1 true EP1925784B1 (fr) 2011-07-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016208795A1 (de) * 2016-05-20 2017-11-23 Bosch Mahle Turbo Systems Gmbh & Co. Kg Abgasturbolader

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008052552B4 (de) 2008-10-21 2015-06-11 Benteler Automobiltechnik Gmbh Turbinengehäuse und Verfahren zu seiner Herstellung
DE102010004897A1 (de) 2010-01-19 2011-07-21 Bosch Mahle Turbo Systems GmbH & Co. KG, 70376 Abgasturbolader für ein Kraftfahrzeug
DE102012206302A1 (de) 2011-08-18 2013-02-21 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable Turbinen-/Verdichtergeometrie
DE102011081187A1 (de) 2011-08-18 2013-02-21 Bosch Mahle Turbo Systems Gmbh & Co. Kg Variable Turbinen-/Verdichtergeometrie
DE112017001114B4 (de) 2016-03-03 2022-10-27 Ihi Corporation Düsenantriebsmechanismus, Turbolader und Turbolader mit variabler Kapazität

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907952A (en) * 1986-12-05 1990-03-13 Honda Giken Kogyo Kabushiki Kaisha Turbocharger
US5441383A (en) * 1992-05-21 1995-08-15 Alliedsignal Inc. Variable exhaust driven turbochargers
KR100669487B1 (ko) 2000-07-19 2007-01-16 허니웰 인터내셔날 인코포레이티드 가변 형상 터보차져
AU2001221812A1 (en) * 2000-11-30 2002-06-11 Honeywell Garrett Sa Variable geometry turbocharger with sliding piston

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016208795A1 (de) * 2016-05-20 2017-11-23 Bosch Mahle Turbo Systems Gmbh & Co. Kg Abgasturbolader

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