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WO2011045521A1 - Load-bearing element for an exhaust line turbocharger - Google Patents

Load-bearing element for an exhaust line turbocharger Download PDF

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Publication number
WO2011045521A1
WO2011045521A1 PCT/FR2010/052152 FR2010052152W WO2011045521A1 WO 2011045521 A1 WO2011045521 A1 WO 2011045521A1 FR 2010052152 W FR2010052152 W FR 2010052152W WO 2011045521 A1 WO2011045521 A1 WO 2011045521A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbocharger
support
casing
turbine
exhaust line
Prior art date
Application number
PCT/FR2010/052152
Other languages
French (fr)
Inventor
Vincent Leroy
Marc-Antoine Belpeer
Alexandre Pelletier
Denis Ragot
Original Assignee
Faurecia Systemes D'echappement
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 Faurecia Systemes D'echappement filed Critical Faurecia Systemes D'echappement
Publication of WO2011045521A1 publication Critical patent/WO2011045521A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/026—Scrolls for radial machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/10—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of charging or scavenging apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a turbocharger for an exhaust line intended to be connected to a motor vehicle engine, the exhaust line comprising an exhaust manifold and the engine comprising a cylinder head, the turbocharger being of the type comprising:
  • First fastening means adapted to fix the turbocharger on one of the exhaust manifold and the cylinder head.
  • Turbochargers of this type for example according to document FR 2 910 544 A1, are known for supercharging internal combustion engines, diesel or gasoline, motor vehicles so as to increase the performance of engines and reduce fuel consumption. vehicles.
  • the turbine casing of such turbochargers can be made from sheet steel.
  • the invention aims to provide a simple and economical turbocharger to manufacture and whose performance is improved.
  • the subject of the invention is a turbocharger of the aforementioned type, characterized in that the support piece is interposed between the turbine casing and the central casing, the support piece having a thickness of between 1 mm and 10 mm. , and the turbine casing being made from sheet steel or composite and having a thickness of between 0.5 mm and 3 mm.
  • the support piece is made from sheet steel or cast iron or cast steel or ceramic composite organic or inorganic;
  • the support part has substantially a cup shape with two faces disposed respectively facing the turbine housing and the central casing;
  • the support part comprises a central orifice adapted to be traversed by a turbocharger shaft;
  • the turbine housing comprises a volute, the support part forming a base of the volute;
  • the first fixing means comprise columns fixed on the support member and adapted to cooperate with complementary fasteners provided on said element;
  • the turbocharger comprises a variable geometry actuator and / or a bypass valve actuator fixed on the support piece;
  • the turbocharger comprises a compressor casing, a turbocharger support lug fixed on the compressor casing and interposed between the compressor casing and the central casing, and second fixing means adapted to fix the support lug on said element;
  • the second fixing means comprise columns fixed on the support lug and adapted to cooperate with complementary fixing members provided on said element;
  • the support part comprises a support arm of another element of the exhaust line.
  • the invention also relates to an exhaust line intended to be connected to a motor vehicle engine, characterized in that it comprises a turbocharger as defined above.
  • the invention further relates to a motor vehicle, of the type comprising a motor, characterized in that it comprises an exhaust line as defined above, the exhaust line being connected to the motor.
  • FIG. 1 is a perspective view, on the turbine side, of a turbocharger according to a first embodiment of the invention
  • FIG. 1 is a side perspective view of the turbocharger of the Figure
  • FIG. 3 is a view of the inside of the turbocharger turbine of the
  • FIG. 4 is a longitudinal sectional view of the turbine of the turbocharger of Figure 1;
  • FIG. 5 is a side perspective view of a turbocharger according to a second embodiment of the invention
  • Figure 6 is a view of the interior of the turbocharger compressor of Figure 5;
  • FIG. 7 and 8 are perspective views of a turbocharger according to a third and a fourth embodiment of the invention respectively.
  • Figures 1 and 2 show a turbocharger 10 of an exhaust line connected to an engine of a motor vehicle.
  • the turbocharger 10 comprises a compressor 12 and a turbine 14 which are mechanically connected in rotation by a common shaft (not shown) of substantially longitudinal axis X-X.
  • the compressor 12 comprises a compressor casing 16 which delimits a substantially cylindrical compressor chamber 18 of longitudinal axis XX, and a compressor wheel (not shown) housed inside the compressor casing 16 and received in the compressor chamber. 18, the compressor wheel being rotated relative to the compressor housing 16 about the axis XX.
  • the turbine 14 comprises a turbine casing 20 which delimits a substantially cylindrical turbine chamber 22 of longitudinal axis XX, and a turbine wheel (not shown) housed inside the turbine casing 20 and received in the turbine chamber 22, the turbine wheel being rotated relative to the turbine casing 20 about the axis XX.
  • the compressor casing 16 and the turbine casing 20 are arranged on either side of a central casing 24 of the turbocompressor 10.
  • the central casing 24 delimits a substantially cylindrical central chamber 26 of longitudinal axis X-X and forms a guide bearing of the common shaft.
  • the compressor wheel and turbine wheel are secured in rotation by the common shaft.
  • the compressor chamber 18 and the turbine chamber 22 communicate with each other via the central chamber 26.
  • the central casing 24 is made from cast iron, for example cast iron.
  • the compressor 12 also includes an air supply duct 28 which opens into the compressor chamber 18, and an air exhaust duct 30 connected to the air intake of the vehicle engine.
  • the turbine 14 also comprises a gas supply duct 32 which opens, via a volute 34, into the turbine chamber 22 and which is connected to an exhaust manifold (not shown) of the engine of the vehicle , and a gas exhaust duct 36 connected to an exhaust system (not shown) of the vehicle engine.
  • the gas supply duct 32 extends in a direction substantially tangential to the volute 34 which winds around the turbine chamber 22 in a counter-clockwise direction in FIG.
  • the turbine casing 20, more precisely the volute 34 is made from thin sheet steel or composite and has a thickness of between 0.5 mm and 3 mm, preferably between 0.5 mm and 1 mm.
  • the turbocharger 10 comprises a support piece 38 of the turbocharger 10 interposed between the turbine casing 20 and the central casing 24, and means 40 for fixing the support piece 38 to a cylinder head (not shown) of the vehicle engine.
  • the support member 38 has substantially a cup shape 42 with a first major face 44 disposed opposite the volute 34 of the turbine casing 20 and a second major face 46 disposed opposite the central casing 24.
  • a central orifice 48 of substantially circular shape with a longitudinal axis X-X is formed in the cup 42 so as to be traversed by the common shaft of the turbocompressor 10.
  • the support piece 38 has a duct portion 50 which extends in a direction substantially tangential to the cup 42.
  • the support piece 38 is fixed by its first large face 44 to the turbine casing 20, for example by welding.
  • the support piece 38 is attached to the turbine casing 20 by any suitable means, such as by screwing, crimping, riveting, etc.
  • the cup 42 and the duct portion 50 of the support piece 38 thus form a base respectively of the volute 34 and the gas supply duct 32.
  • the support piece 38 is also fixed by its second large face 46 to the central casing 24, for example using screw / nut assemblies (not shown) passing through the fixing holes 52 provided for this purpose in the cup 42 and in the central casing 24.
  • the support piece 38 is fixed to the central casing 24 by any suitable means, such as by welding, crimping, riveting, by a V-band bicone clamp or equivalent, etc.
  • the support piece 38 is made from thick sheet steel or cast iron or cast steel or ceramic composite organic or inorganic, and has a thickness of between 1 mm and 10 mm, preferably between 3 mm and 5 mm, preferably substantially equal to 4 mm.
  • the fastening means 40 of the support piece 38 on the cylinder head of the engine comprise at least two posts 54 which are attached and fixed to the cup 42, for example by welding.
  • the posts 54 are integral with the cup 42.
  • the posts 54 extend substantially parallel to the conduit portion
  • one of the columns 54 extending in a direction substantially tangential to the cup 42 and the other of the columns 54 extending in a substantially radial direction relative to the cup 42.
  • the posts 54 cooperate with complementary fasteners (not shown), including fixing studs, provided on the cylinder head of the engine.
  • the cylinder head mounting bolts can also be used to attach a portion of the exhaust manifold.
  • the turbocharger 10 may be of variable geometry type so as to control the flow of the exhaust gases in the turbine 14.
  • the turbocharger 10 comprises a support of variable geometry 56 bearing unrepresented rotor blades, and a variable geometry actuator able to move the blades mounted on the variable geometry support 56.
  • variable geometry support 56 is an annular piece placed at the inlet of the turbine wheel, in the central orifice 48 of the support piece 38, the variable geometry support 56 being held in position. position by the support piece 38.
  • variable geometry actuator is fixed on the support piece 38, for example by means of screw / nut assemblies (not shown) passing through fixing holes 58 provided for this purpose in the cup 42 (FIG. 3).
  • the turbocharger 10 includes, instead of or in addition to the variable geometry support 56, a bypass valve support carrying a bypass valve, better known as a "wastegate", and a bypass valve actuator. capable of operating the bypass valve mounted on the bypass valve support so as to limit the pressure inside the turbocharger 10.
  • a bypass valve support carrying a bypass valve better known as a "wastegate”
  • a bypass valve actuator capable of operating the bypass valve mounted on the bypass valve support so as to limit the pressure inside the turbocharger 10.
  • the bypass valve actuator is also attached to the support piece
  • variable geometry actuator and / or the bypass valve actuator is fixed on the support piece 38 by any appropriate means, such as crimping, riveting, etc.
  • FIG. 5 shows a turbocharger 10 according to a second embodiment of the invention which differs from the first embodiment of FIGS. 1 to 4 in FIG. it comprises an additional support lug 60 of the turbocharger 10 and means 62 for fixing the support lug 60 on the cylinder head of the engine.
  • the support lug 60 is interposed between the compressor casing 16 and the central casing 24.
  • the support lug 60 has substantially a circular arc shape 64 with a longitudinal axis XX with a first side 66 disposed facing the compressor casing 16 and a second side 68 disposed in sight of the central casing 24.
  • the support lug 60 is fixed by its first side 66 to the compressor casing 16 by means of screw / nut assemblies 70 passing through fixing holes provided for this purpose in the arc of circle 64 and in the compressor housing. 16.
  • the support lug 60 is made from thick sheet steel or cast iron or from steel or ceramic composite organic or inorganic, and has a thickness of between 1 mm and 10 mm, preferably between 3 mm and 5 mm, preferably substantially equal to 4 mm.
  • the attachment means 62 of the support lug 60 on the cylinder head of the engine comprise at least two posts 72 which are attached and fixed on the arc 64, for example by welding.
  • the posts 72 are integral with the circular arc 64.
  • the posts 72 extend substantially parallel to the posts 54 of the support piece 38, one of the posts 72 extending in a direction substantially tangential to the circular arc 64 and the other of the columns 72 extending in a substantially radial direction relative to the arc 64.
  • the posts 72 cooperate with complementary fasteners (not shown), including fixing studs, provided on the cylinder head of the engine.
  • the support lug 60 is not fixed on the cylinder head but is in simple support on the latter.
  • the support leg 60 has, instead of the columns 72, support crutches adapted to come into contact with the cylinder head.
  • the support provided by the support crutches is a rigid support.
  • the support provided by the support crutches is a flexible support so as to damp the vibrations experienced by the turbocharger 10, the support legs being then provided with flexible elements, for example rubber.
  • the operation of the turbocharger 10 is explained below.
  • the gases from the exhaust manifold of the vehicle engine are conveyed to the turbocharger 10 and enter the volute 34 through the gas supply pipe 32.
  • the turbine wheel then drives the common shaft of the turbocharger 10 and rotates the compressor wheel.
  • the turbocharger 10 is subjected to high vibratory stresses.
  • the support piece 38 and the support lug 60 not only support all these forces but also support the weight of the turbocharger 10 and transmit them directly to the engine cylinder head.
  • the invention therefore provides a simple and economical turbocharger to manufacture and whose performance is improved.
  • the support piece 38 and the support lug 60 allow effective maintenance of the turbocharger 10 on the cylinder head of the engine.
  • the forces applied to the turbocharger 10 are taken up by the support piece 38 and the support lug 60 and transmitted directly to the cylinder head of the engine. These forces do not pass through the turbine casing 20.
  • volute 34 has the sole function of guiding the exhaust gas from the gas supply pipe 32 to the turbine wheel.
  • the cup 42 and the conduit portion 50 of the support piece 38 form a base respectively of the volute 34 and the gas supply conduit 32.
  • volute 34 and the gas supply duct 32 are formed by two half-shells joined to each other and the support piece 38 is then attached to the turbine casing 20 by docking on the volute 34 .
  • the posts 54 are attached and fixed on the central casing 24, and not on the support piece 38. The forces and the weight of the turbine 14 are then transmitted by the support piece 38 to the central casing 24, and the central casing 24 to the cylinder head of the engine.
  • FIG. 7 shows a turbocharger 10 according to a third embodiment of the invention which differs from the second embodiment of FIGS. 5 and 6 in that the support piece 38 comprises a support arm 74 of another element of the invention.
  • exhaust line such as a catalytic purification member 76.
  • the catalytic purification member 76 is for example a substantially cylindrical catalyst / particulate filter provided in the exhaust line, downstream of the turbocharger 10 in the direction of flow of the exhaust gas.
  • the support arm 74 extends the cup 42 in a substantially radial direction and has a C-shape adapted to grip the catalytic purification member 76.
  • FIG. 8 shows a turbocharger 10 according to a fourth embodiment of the invention which differs from the third embodiment of FIG. 7 in that the support piece 38 is not fixed on the cylinder head but is only fixed on a exhaust manifold 78 provided in the exhaust line, upstream of the turbocharger 10.
  • the support piece 38 comprises a fastening flange 80 fixed to the end of the duct portion 50.
  • the fastening flange 80 is itself fixed on a complementary flange 82 provided on the manifold 78, for example by means of unrepresented screw / nut assemblies passing through fixing holes 84 made in the two flanges 80, 82.
  • the fastening flange 80 is welded to the flange 82 of the manifold 78.
  • the support piece 38 does not have a fastening flange 80 and the support piece 38 is fixed directly to the manifold 78, for example. example by welding.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Supercharger (AREA)

Abstract

The invention relates to a turbocharger (10) for an exhaust line, intended for being connected to an engine of an automobile, the exhaust line including an exhaust manifold and the engine including a cylinder head, the turbocharger (10) including: a turbine casing (20); a delivery casing (24); a mounting part (38) for the turbocharger (10) attached to the turbine casing (20) and the delivery casing (24); and a first attachment means (40) suitable for attaching the turbocharger (10) to either the exhaust manifold or the cylinder head, characterised in that the mounting part (38) is inserted between the turbine casing (20) and the delivery casing (24), the mounting part (38) having a thickness of 1 mm to 10 mm, and in that the turbine housing (20) is made of sheet steel or a composite material having a thickness of 0.5 mm to 3 mm.

Description

Elément de reprise d'effort pour un turbocompresseur d'une ligne d'échappement Stress recovery element for a turbocharger of an exhaust line
La présente invention concerne un turbocompresseur pour une ligne d'échappement prévue pour être raccordée à un moteur de véhicule automobile, la ligne d'échappement comprenant un collecteur d'échappement et le moteur comprenant une culasse, le turbocompresseur étant du type comprenant : The present invention relates to a turbocharger for an exhaust line intended to be connected to a motor vehicle engine, the exhaust line comprising an exhaust manifold and the engine comprising a cylinder head, the turbocharger being of the type comprising:
- un carter de turbine ;  a turbine casing;
- un carter central ;  - a central casing;
- une pièce de support du turbocompresseur fixée au carter de turbine et au carter central ; et  - a support part of the turbocharger attached to the turbine casing and the central casing; and
- des premiers moyens de fixation adaptés pour fixer le turbocompresseur sur un élément parmi le collecteur d'échappement et la culasse.  - First fastening means adapted to fix the turbocharger on one of the exhaust manifold and the cylinder head.
On connaît des turbocompresseurs de ce type, par exemple d'après le document FR 2 910 544 A1 , destinés à suralimenter des moteurs à combustion interne, diesel ou essence, de véhicules automobiles de manière à augmenter les performances des moteurs et réduire la consommation des véhicules.  Turbochargers of this type, for example according to document FR 2 910 544 A1, are known for supercharging internal combustion engines, diesel or gasoline, motor vehicles so as to increase the performance of engines and reduce fuel consumption. vehicles.
Pour des raisons de coût, de masse et d'inertie thermique, le carter de turbine de tels turbocompresseurs peut être fabriqué à partir de tôle d'acier.  For reasons of cost, mass and thermal inertia, the turbine casing of such turbochargers can be made from sheet steel.
Cependant, l'application d'un carter de turbine en tôle d'acier ne permet pas au carter de turbine, du fait de sa résistance mécanique, de supporter l'ensemble des efforts auxquels est soumis le turbocompresseur.  However, the application of a steel sheet turbine casing does not allow the turbine casing, because of its mechanical strength, to withstand all the forces to which the turbocharger is subjected.
L'invention a pour but de proposer un turbocompresseur simple et économique à fabriquer et dont les performances sont améliorées.  The invention aims to provide a simple and economical turbocharger to manufacture and whose performance is improved.
A cet effet, l'invention a pour objet un turbocompresseur du type précité, caractérisé en ce que la pièce de support est interposée entre le carter de turbine et le carter central, la pièce de support possédant une épaisseur comprise entre 1 mm et 10 mm, et le carter de turbine étant fabriqué à partir de tôle d'acier ou composite et possédant une épaisseur comprise entre 0,5 mm et 3 mm.  For this purpose, the subject of the invention is a turbocharger of the aforementioned type, characterized in that the support piece is interposed between the turbine casing and the central casing, the support piece having a thickness of between 1 mm and 10 mm. , and the turbine casing being made from sheet steel or composite and having a thickness of between 0.5 mm and 3 mm.
Le turbocompresseur selon l'invention peut comporter une ou plusieurs des caractéristiques suivantes :  The turbocharger according to the invention may comprise one or more of the following characteristics:
- la pièce de support est fabriquée à partir de tôle d'acier ou de fonte ou de fonte d'acier ou composite céramique organique ou inorganique ;  - The support piece is made from sheet steel or cast iron or cast steel or ceramic composite organic or inorganic;
- la pièce de support présente sensiblement une forme de coupelle avec deux faces disposées en regard respectivement du carter de turbine et du carter central ;  - The support part has substantially a cup shape with two faces disposed respectively facing the turbine housing and the central casing;
- la pièce de support comporte un orifice central propre à être traversé par un arbre du turbocompresseur ; - le carter de turbine comprend une volute, la pièce de support formant une embase de la volute ; - The support part comprises a central orifice adapted to be traversed by a turbocharger shaft; - The turbine housing comprises a volute, the support part forming a base of the volute;
- les premiers moyens de fixation comportent des colonnettes fixées sur la pièce de support et adaptées pour coopérer avec des organes de fixation complémentaires prévus sur ledit élément ;  - The first fixing means comprise columns fixed on the support member and adapted to cooperate with complementary fasteners provided on said element;
- le turbocompresseur comprend un actionneur de géométrie variable et/ou un actionneur de soupape de dérivation fixé sur la pièce de support ;  the turbocharger comprises a variable geometry actuator and / or a bypass valve actuator fixed on the support piece;
- le turbocompresseur comprend un carter de compresseur, une patte de support du turbocompresseur fixée sur le carter de compresseur et interposée entre le carter de compresseur et le carter central, et des deuxièmes moyens de fixation adaptés pour fixer la patte de support sur ledit élément ;  the turbocharger comprises a compressor casing, a turbocharger support lug fixed on the compressor casing and interposed between the compressor casing and the central casing, and second fixing means adapted to fix the support lug on said element;
- les deuxièmes moyens de fixation comportent des colonnettes fixées sur la patte de support et adaptées pour coopérer avec des organes de fixation complémentaires prévus sur ledit élément ; et  the second fixing means comprise columns fixed on the support lug and adapted to cooperate with complementary fixing members provided on said element; and
- la pièce de support comporte un bras de support d'un autre élément de la ligne d'échappement.  - The support part comprises a support arm of another element of the exhaust line.
L'invention a également pour objet une ligne d'échappement prévue pour être raccordée à un moteur de véhicule automobile, caractérisée en ce qu'elle comprend un turbocompresseur tel que défini ci-dessus.  The invention also relates to an exhaust line intended to be connected to a motor vehicle engine, characterized in that it comprises a turbocharger as defined above.
L'invention a en outre pour objet un véhicule automobile, du type comprenant un moteur, caractérisé en ce qu'il comprend une ligne d'échappement telle que définie ci- dessus, la ligne d'échappement étant raccordée au moteur.  The invention further relates to a motor vehicle, of the type comprising a motor, characterized in that it comprises an exhaust line as defined above, the exhaust line being connected to the motor.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels :  The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which:
- la Figure 1 est une vue en perspective, côté turbine, d'un turbocompresseur selon un premier mode de réalisation de l'invention ;  - Figure 1 is a perspective view, on the turbine side, of a turbocharger according to a first embodiment of the invention;
- la Figure 2 est une vue en perspective latérale du turbocompresseur de la Figure - Figure 2 is a side perspective view of the turbocharger of the Figure
1 ; 1;
- la Figure 3 est une vue de l'intérieur de la turbine du turbocompresseur de la FIG. 3 is a view of the inside of the turbocharger turbine of the
Figure 1 ; Figure 1 ;
- la Figure 4 est une vue en coupe longitudinale de la turbine du turbocompresseur de la Figure 1 ;  - Figure 4 is a longitudinal sectional view of the turbine of the turbocharger of Figure 1;
- la Figure 5 est une vue en perspective latérale d'un turbocompresseur selon un deuxième mode de réalisation de l'invention ; - la Figure 6 est une vue de l'intérieur du compresseur du turbocompresseur de la Figure 5 ; et - Figure 5 is a side perspective view of a turbocharger according to a second embodiment of the invention; Figure 6 is a view of the interior of the turbocharger compressor of Figure 5; and
- les Figures 7 et 8 sont des vues en perspective d'un turbocompresseur selon respectivement un troisième et un quatrième mode de réalisation de l'invention.  - Figures 7 and 8 are perspective views of a turbocharger according to a third and a fourth embodiment of the invention respectively.
Les Figures 1 et 2 représentent un turbocompresseur 10 d'une ligne d'échappement raccordée à un moteur d'un véhicule automobile.  Figures 1 and 2 show a turbocharger 10 of an exhaust line connected to an engine of a motor vehicle.
Le turbocompresseur 10 comprend un compresseur 12 et une turbine 14 qui sont liés mécaniquement en rotation par un arbre commun (non représenté) d'axe sensiblement longitudinal X-X.  The turbocharger 10 comprises a compressor 12 and a turbine 14 which are mechanically connected in rotation by a common shaft (not shown) of substantially longitudinal axis X-X.
Le compresseur 12 comprend un carter de compresseur 16 qui délimite une chambre de compresseur 18 sensiblement cylindrique d'axe longitudinal X-X, et une roue de compresseur (non représentée) logée à l'intérieur du carter de compresseur 16 et reçue dans la chambre de compresseur 18, la roue de compresseur étant montée en rotation par rapport au carter de compresseur 16 autour de l'axe X-X.  The compressor 12 comprises a compressor casing 16 which delimits a substantially cylindrical compressor chamber 18 of longitudinal axis XX, and a compressor wheel (not shown) housed inside the compressor casing 16 and received in the compressor chamber. 18, the compressor wheel being rotated relative to the compressor housing 16 about the axis XX.
La turbine 14 comprend un carter de turbine 20 qui délimite une chambre de turbine 22 sensiblement cylindrique d'axe longitudinal X-X, et une roue de turbine (non représentée) logée à l'intérieur du carter de turbine 20 et reçue dans la chambre de turbine 22, la roue de turbine étant montée en rotation par rapport au carter de turbine 20 autour de l'axe X-X.  The turbine 14 comprises a turbine casing 20 which delimits a substantially cylindrical turbine chamber 22 of longitudinal axis XX, and a turbine wheel (not shown) housed inside the turbine casing 20 and received in the turbine chamber 22, the turbine wheel being rotated relative to the turbine casing 20 about the axis XX.
Les carter de compresseur 16 et carter de turbine 20 sont agencés de part et d'autre d'un carter central 24 du turbocompresseur 10.  The compressor casing 16 and the turbine casing 20 are arranged on either side of a central casing 24 of the turbocompressor 10.
Le carter central 24 délimite une chambre centrale 26 sensiblement cylindrique d'axe longitudinal X-X et forme un palier de guidage de l'arbre commun.  The central casing 24 delimits a substantially cylindrical central chamber 26 of longitudinal axis X-X and forms a guide bearing of the common shaft.
Les roue de compresseur et roue de turbine sont solidarisées en rotation par l'arbre commun.  The compressor wheel and turbine wheel are secured in rotation by the common shaft.
Les chambre de compresseur 18 et chambre de turbine 22 communiquent l'une avec l'autre par l'intermédiaire de la chambre centrale 26.  The compressor chamber 18 and the turbine chamber 22 communicate with each other via the central chamber 26.
Le carter central 24 est fabriqué à partir de fonte, par exemple de fonte d'acier. Le compresseur 12 comprend également un conduit d'alimentation en air 28 qui débouche dans la chambre de compresseur 18, et un conduit d'évacuation d'air 30 raccordé à l'admission d'air du moteur du véhicule.  The central casing 24 is made from cast iron, for example cast iron. The compressor 12 also includes an air supply duct 28 which opens into the compressor chamber 18, and an air exhaust duct 30 connected to the air intake of the vehicle engine.
La turbine 14 comprend également un conduit d'alimentation en gaz 32 qui débouche, par l'intermédiaire d'une volute 34, dans la chambre de turbine 22 et qui est raccordé à un collecteur d'échappement (non représenté) du moteur du véhicule, et un conduit d'évacuation des gaz 36 raccordé à un système d'échappement (non représenté) du moteur du véhicule. Le conduit d'alimentation en gaz 32 s'étend dans une direction sensiblement tangentielle à la volute 34 qui s'enroule autour de la chambre de turbine 22 dans un sens anti-horaire sur la Figure 1 . The turbine 14 also comprises a gas supply duct 32 which opens, via a volute 34, into the turbine chamber 22 and which is connected to an exhaust manifold (not shown) of the engine of the vehicle , and a gas exhaust duct 36 connected to an exhaust system (not shown) of the vehicle engine. The gas supply duct 32 extends in a direction substantially tangential to the volute 34 which winds around the turbine chamber 22 in a counter-clockwise direction in FIG.
Le carter de turbine 20, plus précisément la volute 34 est fabriquée à partir de tôle fine d'acier ou composite et possède une épaisseur comprise entre 0,5 mm et 3 mm, de préférence comprise entre 0,5 mm et 1 mm.  The turbine casing 20, more precisely the volute 34 is made from thin sheet steel or composite and has a thickness of between 0.5 mm and 3 mm, preferably between 0.5 mm and 1 mm.
Le turbocompresseur 10 comprend une pièce de support 38 du turbocompresseur 10 interposée entre le carter de turbine 20 et le carter central 24, et des moyens de fixation 40 de la pièce de support 38 sur une culasse (non représentée) du moteur du véhicule.  The turbocharger 10 comprises a support piece 38 of the turbocharger 10 interposed between the turbine casing 20 and the central casing 24, and means 40 for fixing the support piece 38 to a cylinder head (not shown) of the vehicle engine.
En référence aux Figures 3 et 4, la pièce de support 38 présente sensiblement une forme de coupelle 42 avec une première grande face 44 disposée en regard de la volute 34 du carter de turbine 20 et une deuxième grande face 46 disposée en regard du carter central 24.  Referring to Figures 3 and 4, the support member 38 has substantially a cup shape 42 with a first major face 44 disposed opposite the volute 34 of the turbine casing 20 and a second major face 46 disposed opposite the central casing 24.
Un orifice central 48 de forme sensiblement circulaire d'axe longitudinal X-X est ménagé dans la coupelle 42 de manière à être traversé par l'arbre commun du turbocompresseur 10.  A central orifice 48 of substantially circular shape with a longitudinal axis X-X is formed in the cup 42 so as to be traversed by the common shaft of the turbocompressor 10.
La pièce de support 38 comporte une partie de conduit 50 qui s'étend dans une direction sensiblement tangentielle à la coupelle 42.  The support piece 38 has a duct portion 50 which extends in a direction substantially tangential to the cup 42.
La pièce de support 38 est fixée par sa première grande face 44 au carter de turbine 20, par exemple par soudage.  The support piece 38 is fixed by its first large face 44 to the turbine casing 20, for example by welding.
En variante, la pièce de support 38 est fixé au carter de turbine 20 par tout moyen approprié, tel que par vissage, sertissage, rivetage, etc.  Alternatively, the support piece 38 is attached to the turbine casing 20 by any suitable means, such as by screwing, crimping, riveting, etc.
La coupelle 42 et la partie de conduit 50 de la pièce de support 38 forment ainsi une embase respectivement de la volute 34 et du conduit d'alimentation en gaz 32.  The cup 42 and the duct portion 50 of the support piece 38 thus form a base respectively of the volute 34 and the gas supply duct 32.
La pièce de support 38 est également fixée par sa deuxième grande face 46 au carter central 24, par exemple à l'aide d'ensembles vis/écrou (non représentés) traversant des trous de fixation 52 prévus à cet effet dans la coupelle 42 et dans le carter central 24.  The support piece 38 is also fixed by its second large face 46 to the central casing 24, for example using screw / nut assemblies (not shown) passing through the fixing holes 52 provided for this purpose in the cup 42 and in the central casing 24.
En variante, la pièce de support 38 est fixée au carter central 24 par tout moyen approprié, tel que par soudage, sertissage, rivetage, par un collier de serrage de type V- band bicône ou équivalent, etc.  Alternatively, the support piece 38 is fixed to the central casing 24 by any suitable means, such as by welding, crimping, riveting, by a V-band bicone clamp or equivalent, etc.
La pièce de support 38 est fabriquée à partir de tôle épaisse d'acier ou de fonte ou de fonte d'acier ou composite céramique organique ou inorganique, et possède une épaisseur comprise entre 1 mm et 10 mm, de préférence comprise entre 3 mm et 5 mm, de préférence sensiblement égale à 4 mm. Les moyens de fixation 40 de la pièce de support 38 sur la culasse du moteur comportent au moins deux colonnettes 54 qui sont rapportées et fixées sur la coupelle 42, par exemple par soudage. The support piece 38 is made from thick sheet steel or cast iron or cast steel or ceramic composite organic or inorganic, and has a thickness of between 1 mm and 10 mm, preferably between 3 mm and 5 mm, preferably substantially equal to 4 mm. The fastening means 40 of the support piece 38 on the cylinder head of the engine comprise at least two posts 54 which are attached and fixed to the cup 42, for example by welding.
En variante, les colonnettes 54 sont venues de matière avec la coupelle 42.  Alternatively, the posts 54 are integral with the cup 42.
Les colonnettes 54 s'étendent sensiblement parallèlement à la partie de conduit The posts 54 extend substantially parallel to the conduit portion
50, une des colonnettes 54 s'étendant dans une direction sensiblement tangentielle à la coupelle 42 et l'autre des colonnettes 54 s'étendant dans une direction sensiblement radiale par rapport à la coupelle 42. 50, one of the columns 54 extending in a direction substantially tangential to the cup 42 and the other of the columns 54 extending in a substantially radial direction relative to the cup 42.
Les colonnettes 54 coopèrent avec des organes de fixation complémentaires (non représentés), notamment des goujons de fixation, prévus sur la culasse du moteur.  The posts 54 cooperate with complementary fasteners (not shown), including fixing studs, provided on the cylinder head of the engine.
Les goujons de fixation de la culasse peuvent également servir à fixer une partie du collecteur d'échappement.  The cylinder head mounting bolts can also be used to attach a portion of the exhaust manifold.
Le turbocompresseur 10 peut être de type à géométrie variable de manière à contrôler l'écoulement des gaz d'échappement dans la turbine 14.  The turbocharger 10 may be of variable geometry type so as to control the flow of the exhaust gases in the turbine 14.
Pour cela, le turbocompresseur 10 comprend un support de géométrie variable 56 portant des aubes mobiles non représentées, et un actionneur de géométrie variable propre à déplacer les aubes montées sur le support de géométrie variable 56.  For this, the turbocharger 10 comprises a support of variable geometry 56 bearing unrepresented rotor blades, and a variable geometry actuator able to move the blades mounted on the variable geometry support 56.
Comme illustré sur la Figure 4, le support de géométrie variable 56 est une pièce annulaire placée à l'entrée de la roue de turbine, dans l'orifice central 48 de la pièce de support 38, le support de géométrie variable 56 étant maintenu en position par la pièce de support 38.  As illustrated in FIG. 4, the variable geometry support 56 is an annular piece placed at the inlet of the turbine wheel, in the central orifice 48 of the support piece 38, the variable geometry support 56 being held in position. position by the support piece 38.
L'actionneur de géométrie variable est fixé sur la pièce de support 38, par exemple à l'aide d'ensembles vis/écrou (non représentés) traversant des lumières de fixation 58 prévues à cet effet dans la coupelle 42 (Figure 3).  The variable geometry actuator is fixed on the support piece 38, for example by means of screw / nut assemblies (not shown) passing through fixing holes 58 provided for this purpose in the cup 42 (FIG. 3).
En variante, le turbocompresseur 10 comprend, à la place ou en plus du support de géométrie variable 56, un support de soupape de dérivation portant une soupape de dérivation, plus connue sous le nom de « wastegate », et un actionneur de soupape de dérivation propre à actionner la soupape de dérivation montée sur le support de soupape de dérivation de manière à limiter la pression à l'intérieur du turbocompresseur 10.  Alternatively, the turbocharger 10 includes, instead of or in addition to the variable geometry support 56, a bypass valve support carrying a bypass valve, better known as a "wastegate", and a bypass valve actuator. capable of operating the bypass valve mounted on the bypass valve support so as to limit the pressure inside the turbocharger 10.
L'actionneur de soupape de dérivation est également fixé sur la pièce de support The bypass valve actuator is also attached to the support piece
38 à l'aide des lumières de fixation 58. 38 with fixing lights 58.
En variante encore, l'actionneur de géométrie variable et/ou l'actionneur de soupape de dérivation est fixée sur la pièce de support 38 par tout moyen approprié, tel que par sertissage, rivetage, etc.  In another variant, the variable geometry actuator and / or the bypass valve actuator is fixed on the support piece 38 by any appropriate means, such as crimping, riveting, etc.
La Figure 5 représente un turbocompresseur 10 selon un deuxième mode de réalisation de l'invention qui diffère du premier mode de réalisation des Figures 1 à 4 en ce qu'il comprend une patte supplémentaire de support 60 du turbocompresseur 10 et des moyens de fixation 62 de la patte de support 60 sur la culasse du moteur. FIG. 5 shows a turbocharger 10 according to a second embodiment of the invention which differs from the first embodiment of FIGS. 1 to 4 in FIG. it comprises an additional support lug 60 of the turbocharger 10 and means 62 for fixing the support lug 60 on the cylinder head of the engine.
Les éléments identiques sont désignés de manière identique par les mêmes numéros de référence.  Identical elements are designated identically by the same reference numbers.
La patte de support 60 est interposée entre le carter de compresseur 16 et le carter central 24.  The support lug 60 is interposed between the compressor casing 16 and the central casing 24.
Comme on le voit mieux sur la Figure 6, la patte de support 60 présente sensiblement une forme d'arc de cercle 64 d'axe longitudinal X-X avec un premier côté 66 disposé en regard du carter de compresseur 16 et un deuxième côté 68 disposé en regard du carter central 24.  As best seen in FIG. 6, the support lug 60 has substantially a circular arc shape 64 with a longitudinal axis XX with a first side 66 disposed facing the compressor casing 16 and a second side 68 disposed in sight of the central casing 24.
La patte de support 60 est fixée par son premier côté 66 au carter de compresseur 16 à l'aide d'ensembles vis/écrou 70 traversant des trous de fixation prévus à cet effet dans l'arc de cercle 64 et dans le carter de compresseur 16.  The support lug 60 is fixed by its first side 66 to the compressor casing 16 by means of screw / nut assemblies 70 passing through fixing holes provided for this purpose in the arc of circle 64 and in the compressor housing. 16.
La patte de support 60 est fabriquée à partir de tôle épaisse d'acier ou de fonte ou de fonte d'acier ou composite céramique organique ou inorganique, et possède une épaisseur comprise entre 1 mm et 10 mm, de préférence comprise entre 3 mm et 5 mm, de préférence sensiblement égale à 4 mm.  The support lug 60 is made from thick sheet steel or cast iron or from steel or ceramic composite organic or inorganic, and has a thickness of between 1 mm and 10 mm, preferably between 3 mm and 5 mm, preferably substantially equal to 4 mm.
Les moyens de fixation 62 de la patte de support 60 sur la culasse du moteur comportent au moins deux colonnettes 72 qui sont rapportées et fixées sur l'arc de cercle 64, par exemple par soudage.  The attachment means 62 of the support lug 60 on the cylinder head of the engine comprise at least two posts 72 which are attached and fixed on the arc 64, for example by welding.
En variante, les colonnettes 72 sont venues de matière avec l'arc de cercle 64. Les colonnettes 72 s'étendent sensiblement parallèlement aux colonnettes 54 de la pièce de support 38, une des colonnettes 72 s'étendant dans une direction sensiblement tangentielle à l'arc de cercle 64 et l'autre des colonnettes 72 s'étendant dans une direction sensiblement radiale par rapport à l'arc de cercle 64.  Alternatively, the posts 72 are integral with the circular arc 64. The posts 72 extend substantially parallel to the posts 54 of the support piece 38, one of the posts 72 extending in a direction substantially tangential to the circular arc 64 and the other of the columns 72 extending in a substantially radial direction relative to the arc 64.
Les colonnettes 72 coopèrent avec des organes de fixation complémentaires (non représentés), notamment des goujons de fixation, prévus sur la culasse du moteur.  The posts 72 cooperate with complementary fasteners (not shown), including fixing studs, provided on the cylinder head of the engine.
En variante, la patte de support 60 n'est pas fixée sur la culasse mais est en simple appui sur cette dernière. Pour cela, la patte de support 60 comporte, à la place des colonnettes 72, des béquilles d'appui adaptées pour venir en contact avec la culasse. L'appui fourni par les béquilles d'appui est un appui rigide.  Alternatively, the support lug 60 is not fixed on the cylinder head but is in simple support on the latter. For this, the support leg 60 has, instead of the columns 72, support crutches adapted to come into contact with the cylinder head. The support provided by the support crutches is a rigid support.
En variante encore, l'appui fourni par les béquilles d'appui est un appui souple de manière à amortir les vibrations subies par le turbocompresseur 10, les béquilles d'appui étant alors munies d'éléments souples, par exemple en caoutchouc.  In another variant, the support provided by the support crutches is a flexible support so as to damp the vibrations experienced by the turbocharger 10, the support legs being then provided with flexible elements, for example rubber.
Le fonctionnement du turbocompresseur 10 est expliqué ci-dessous. Les gaz issus du collecteur d'échappement du moteur du véhicule sont acheminés jusqu'au turbocompresseur 10 et entrent dans la volute 34 par le conduit d'alimentation en gaz 32. The operation of the turbocharger 10 is explained below. The gases from the exhaust manifold of the vehicle engine are conveyed to the turbocharger 10 and enter the volute 34 through the gas supply pipe 32.
Ces gaz circulent le long de la volute 34, entrent dans la chambre de turbine 22 pour faire tourner la roue de turbine, et sont évacués par le conduit d'évacuation des gaz 36 en direction du système d'échappement du moteur du véhicule.  These gases flow along the volute 34, enter the turbine chamber 22 to rotate the turbine wheel, and are evacuated through the gas exhaust duct 36 towards the engine exhaust system of the vehicle.
La roue de turbine entraîne alors l'arbre commun du turbocompresseur 10 et fait tourner la roue de compresseur.  The turbine wheel then drives the common shaft of the turbocharger 10 and rotates the compressor wheel.
Au fur et à mesure que la roue de compresseur tourne, de l'air est aspiré à travers le conduit d'alimentation en air 28, compressé et évacué par le conduit d'évacuation d'air 30 vers un collecteur d'admission du moteur du véhicule.  As the compressor wheel rotates, air is drawn through the air supply duct 28, compressed and discharged through the exhaust duct 30 to an engine intake manifold. of the vehicle.
Lors de ce fonctionnement, le turbocompresseur 10 est soumis à d'importantes sollicitations vibratoires.  During this operation, the turbocharger 10 is subjected to high vibratory stresses.
De par leur résistance mécanique, la pièce de support 38 et la patte de support 60 permettent non seulement de supporter l'ensemble de ces efforts mais également de supporter le poids du turbocompresseur 10 et de les transmettre directement à la culasse du moteur.  Due to their mechanical strength, the support piece 38 and the support lug 60 not only support all these forces but also support the weight of the turbocharger 10 and transmit them directly to the engine cylinder head.
L'invention propose donc un turbocompresseur simple et économique à fabriquer et dont les performances sont améliorées.  The invention therefore provides a simple and economical turbocharger to manufacture and whose performance is improved.
En effet, la pièce de support 38 et la patte de support 60 permettent un maintien efficace du turbocompresseur 10 sur la culasse du moteur.  Indeed, the support piece 38 and the support lug 60 allow effective maintenance of the turbocharger 10 on the cylinder head of the engine.
De plus, les efforts appliqués au turbocompresseur 10 sont repris par la pièce de support 38 et la patte de support 60 et transmis directement à la culasse du moteur. Ces efforts ne passent pas par la carter de turbine 20.  In addition, the forces applied to the turbocharger 10 are taken up by the support piece 38 and the support lug 60 and transmitted directly to the cylinder head of the engine. These forces do not pass through the turbine casing 20.
Ceci permet de réduire l'épaisseur de la volute 34 en tôle d'acier ou composite et donc de limiter le poids, l'inertie thermique et le coût de l'ensemble.  This makes it possible to reduce the thickness of the volute 34 made of sheet steel or composite and thus to limit the weight, the thermal inertia and the cost of the assembly.
Ainsi, la volute 34 a pour unique fonction de guider les gaz d'échappement depuis le conduit d'alimentation en gaz 32 jusqu'à la roue de turbine.  Thus, the volute 34 has the sole function of guiding the exhaust gas from the gas supply pipe 32 to the turbine wheel.
Dans les deux modes de réalisation de l'invention décrits ci-dessus, la coupelle 42 et la partie de conduit 50 de la pièce de support 38 forment une embase respectivement de la volute 34 et du conduit d'alimentation en gaz 32.  In both embodiments of the invention described above, the cup 42 and the conduit portion 50 of the support piece 38 form a base respectively of the volute 34 and the gas supply conduit 32.
En variante, la volute 34 et le conduit d'alimentation en gaz 32 sont formés par deux demi-coquilles assemblées l'une à l'autre et la pièce de support 38 est alors fixée au carter de turbine 20 par accostage sur la volute 34.  Alternatively, the volute 34 and the gas supply duct 32 are formed by two half-shells joined to each other and the support piece 38 is then attached to the turbine casing 20 by docking on the volute 34 .
Dans une variante non préférée, les colonnettes 54 sont rapportées et fixées sur le carter central 24, et non sur la pièce de support 38. Les efforts et le poids de la turbine 14 sont alors transmis par la pièce de support 38 au carter central 24, et du carter central 24 à la culasse du moteur. In a non preferred variant, the posts 54 are attached and fixed on the central casing 24, and not on the support piece 38. The forces and the weight of the turbine 14 are then transmitted by the support piece 38 to the central casing 24, and the central casing 24 to the cylinder head of the engine.
La Figure 7 représente un turbocompresseur 10 selon un troisième mode de réalisation de l'invention qui diffère du deuxième mode de réalisation des Figures 5 et 6 en ce que la pièce de support 38 comporte un bras de support 74 d'un autre élément de la ligne d'échappement, tel qu'un organe de purification catalytique 76.  FIG. 7 shows a turbocharger 10 according to a third embodiment of the invention which differs from the second embodiment of FIGS. 5 and 6 in that the support piece 38 comprises a support arm 74 of another element of the invention. exhaust line, such as a catalytic purification member 76.
L'organe de purification catalytique 76 est par exemple un catalyseur/filtre à particules de forme sensiblement cylindrique prévu dans la ligne d'échappement, en aval du turbocompresseur 10 suivant le sens de circulation des gaz d'échappement.  The catalytic purification member 76 is for example a substantially cylindrical catalyst / particulate filter provided in the exhaust line, downstream of the turbocharger 10 in the direction of flow of the exhaust gas.
Le bras de support 74 prolonge la coupelle 42 dans une direction sensiblement radiale et présente une forme de C adaptée pour enserrer l'organe de purification catalytique 76.  The support arm 74 extends the cup 42 in a substantially radial direction and has a C-shape adapted to grip the catalytic purification member 76.
La Figure 8 représente un turbocompresseur 10 selon un quatrième mode de réalisation de l'invention qui diffère du troisième mode de réalisation de la Figure 7 en ce que la pièce de support 38 n'est pas fixée sur la culasse mais est seulement fixée sur un collecteur d'échappement 78 prévu dans la ligne d'échappement, en amont du turbocompresseur 10.  FIG. 8 shows a turbocharger 10 according to a fourth embodiment of the invention which differs from the third embodiment of FIG. 7 in that the support piece 38 is not fixed on the cylinder head but is only fixed on a exhaust manifold 78 provided in the exhaust line, upstream of the turbocharger 10.
Pour cela, la pièce de support 38 comporte une bride de fixation 80 fixée à l'extrémité de la partie de conduit 50.  For this, the support piece 38 comprises a fastening flange 80 fixed to the end of the duct portion 50.
La bride de fixation 80 est elle-même fixée sur une bride complémentaire 82 prévue sur le collecteur 78, par exemple à l'aide d'ensembles vis/écrou non représentés traversant des lumières de fixation 84 pratiquées dans les deux brides 80, 82.  The fastening flange 80 is itself fixed on a complementary flange 82 provided on the manifold 78, for example by means of unrepresented screw / nut assemblies passing through fixing holes 84 made in the two flanges 80, 82.
En variante, la bride de fixation 80 est soudée sur la bride 82 du collecteur 78. En variante encore, la pièce de support 38 ne comporte pas de bride de fixation 80 et la pièce de support 38 est fixée directement sur le collecteur 78, par exemple par soudage.  In a variant, the fastening flange 80 is welded to the flange 82 of the manifold 78. As a further variant, the support piece 38 does not have a fastening flange 80 and the support piece 38 is fixed directly to the manifold 78, for example. example by welding.

Claims

REVENDICATIONS
1 . - Turbocompresseur (10) pour une ligne d'échappement prévue pour être raccordée à un moteur de véhicule automobile, la ligne d'échappement comprenant un collecteur d'échappement (78) et le moteur comprenant une culasse, le turbocompresseur (10) étant du type comprenant :  1. - Turbocharger (10) for an exhaust line intended to be connected to a motor vehicle engine, the exhaust line comprising an exhaust manifold (78) and the engine comprising a cylinder head, the turbocharger (10) being type comprising:
- un carter de turbine (20) ;  a turbine casing (20);
- un carter central (24) ;  - a central casing (24);
- une pièce de support (38) du turbocompresseur (10) fixée au carter de turbine (20) et au carter central (24) ; et  - a support part (38) of the turbocharger (10) attached to the turbine casing (20) and the central casing (24); and
- des premiers moyens de fixation (40) adaptés pour fixer le turbocompresseur first fastening means (40) adapted to fix the turbocharger
(10) sur un élément parmi le collecteur d'échappement (78) et la culasse, (10) on one of the exhaust manifold (78) and the cylinder head,
caractérisé en ce que la pièce de support (38) est interposée entre le carter de turbine (20) et le carter central (24), la pièce de support (38) possédant une épaisseur comprise entre 1 mm et 10 mm, et le carter de turbine (20) étant fabriqué à partir de tôle d'acier ou composite et possédant une épaisseur comprise entre 0,5 mm et 3 mm.  characterized in that the support piece (38) is interposed between the turbine casing (20) and the central casing (24), the support piece (38) having a thickness of between 1 mm and 10 mm, and the casing turbine (20) being made from sheet steel or composite and having a thickness of between 0.5 mm and 3 mm.
2. - Turbocompresseur (10) selon la revendication 1 , caractérisé en ce que la pièce de support (38) est fabriquée à partir de tôle d'acier ou de fonte ou de fonte d'acier ou composite céramique organique ou inorganique.  2. - Turbocharger (10) according to claim 1, characterized in that the support member (38) is manufactured from sheet steel or cast iron or cast steel or ceramic composite organic or inorganic.
3. - Turbocompresseur (10) selon la revendication 1 ou 2, caractérisé en ce que la pièce de support (38) présente sensiblement une forme de coupelle (42) avec deux faces 3. - Turbocharger (10) according to claim 1 or 2, characterized in that the support piece (38) has substantially a cup shape (42) with two faces
(44, 46) disposées en regard respectivement du carter de turbine (20) et du carter central (24). (44, 46) arranged respectively facing the turbine casing (20) and the central casing (24).
4. - Turbocompresseur (10) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la pièce de support (38) comporte un orifice central (48) propre à être traversé par un arbre du turbocompresseur (10).  4. - Turbocharger (10) according to any one of claims 1 to 3, characterized in that the support member (38) comprises a central orifice (48) adapted to be traversed by a shaft of the turbocharger (10).
5. - Turbocompresseur (10) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le carter de turbine (20) comprend une volute (34), la pièce de support (38) formant une embase de la volute (34).  5. - Turbocharger (10) according to any one of claims 1 to 4, characterized in that the turbine housing (20) comprises a volute (34), the support piece (38) forming a base of the volute ( 34).
6. - Turbocompresseur (10) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les premiers moyens de fixation (40) comportent des colonnettes 6. - Turbocharger (10) according to any one of claims 1 to 5, characterized in that the first fixing means (40) comprise small columns
(54) fixées sur la pièce de support (38) et adaptées pour coopérer avec des organes de fixation complémentaires prévus sur ledit élément. (54) attached to the support member (38) and adapted to cooperate with complementary fasteners provided on said member.
7. - Turbocompresseur (10) selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il comprend un actionneur de géométrie variable et/ou un actionneur de soupape de dérivation fixé sur la pièce de support (38). 7. - Turbocharger (10) according to any one of claims 1 to 6, characterized in that it comprises a variable geometry actuator and / or a bypass valve actuator fixed on the support member (38).
8.- Turbocompresseur (10) selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comprend un carter de compresseur (16), une patte de support (60) du turbocompresseur (10) fixée sur le carter de compresseur (16) et interposée entre le carter de compresseur (16) et le carter central (24), et des deuxièmes moyens de fixation (62) adaptés pour fixer la patte de support (60) sur ledit élément. 8. Turbocharger (10) according to any one of claims 1 to 7, characterized in that it comprises a compressor housing (16), a support lug (60) of the turbocharger (10) fixed on the housing of compressor (16) and interposed between the compressor housing (16) and the central housing (24), and second securing means (62) adapted to secure the support bracket (60) to said element.
9- Turbocompresseur (10) selon la revendication 8, caractérisé en ce que les deuxièmes moyens de fixation (62) comportent des colonnettes (72) fixées sur la patte de support (60) et adaptées pour coopérer avec des organes de fixation complémentaires prévus sur ledit élément.  9- turbocharger (10) according to claim 8, characterized in that the second fastening means (62) comprise posts (72) fixed on the support lug (60) and adapted to cooperate with complementary fasteners provided on said element.
10. - Turbocompresseur (10) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la pièce de support (38) comporte un bras de support (74) d'un autre élément (76) de la ligne d'échappement.  10. - Turbocharger (10) according to any one of claims 1 to 9, characterized in that the support piece (38) comprises a support arm (74) of another element (76) of the line of exhaust.
1 1 . - Ligne d'échappement prévue pour être raccordée à un moteur de véhicule automobile, caractérisée en ce qu'elle comprend un turbocompresseur (10) selon l'une quelconque des revendications 1 à 10.  1 1. - Exhaust line intended to be connected to a motor vehicle engine, characterized in that it comprises a turbocharger (10) according to any one of claims 1 to 10.
12. - Véhicule automobile, du type comprenant un moteur, caractérisé en ce qu'il comprend une ligne d'échappement selon la revendication 1 1 , la ligne d'échappement étant raccordée au moteur.  12. - Motor vehicle, of the type comprising a motor, characterized in that it comprises an exhaust line according to claim 1 1, the exhaust line being connected to the motor.
PCT/FR2010/052152 2009-10-15 2010-10-12 Load-bearing element for an exhaust line turbocharger WO2011045521A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0957250 2009-10-15
FR0957250A FR2951497B1 (en) 2009-10-15 2009-10-15 EFFORT RETRIEVAL ELEMENT FOR A TURBOCHARGER OF AN EXHAUST LINE.

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WO2011045521A1 true WO2011045521A1 (en) 2011-04-21

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FR (1) FR2951497B1 (en)
WO (1) WO2011045521A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102012209562A1 (en) * 2012-06-06 2013-12-12 Continental Automotive Gmbh Turbine housing for an exhaust gas turbocharger
DE102012209560A1 (en) * 2012-06-06 2013-12-12 Continental Automotive Gmbh Turbine housing for turbocharger, has contour component that is provided with sealing contour realized as cast portion or forging device welded to neighboring housing portions

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DE10022052A1 (en) * 1999-05-26 2001-03-01 Gillet Heinrich Gmbh Turbine casing for exhaust gas turbocharger has inlet funnel, rotor casing and exhaust pipe made from embossed or deep-drawn sheet metal, and inlet funnel and exhaust pipe are welded to rotor casing which comprises two half shells
DE10061846A1 (en) * 2000-12-12 2002-06-13 Daimler Chrysler Ag Exhaust gas turbocharger for internal combustion engines has turbine housing comprising two individual sheet metal parts spaced from each other with interspace formed between inner and outer shells
FR2849469A1 (en) * 2002-12-27 2004-07-02 Renault Sa MOTOR VEHICLE EXHAUST MANIFOLD COMPRISING NON-CARRIER CONDUITS
FR2856735A1 (en) * 2003-06-30 2004-12-31 Renault Sa ENGINE COMPRISING A CATALYST AND A TURBOCHARGER FIXED ON THE CYLINDER BLOCK BY MEANS OF A COMMON SUPPORT
EP1541826A1 (en) * 2003-12-13 2005-06-15 Ford Global Technologies, LLC Turbocharger
EP1650409A1 (en) * 2004-10-21 2006-04-26 ABB Turbo Systems AG Mounting device of a turbocharger housing
FR2910544A1 (en) 2006-12-20 2008-06-27 Renault Sas High volume turbocharger fixing and maintaining device for internal combustion engine, has end cooperating with unit screwing central cover to turbine cover or cooperating with another unit screwing central cover to compressor cover

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Publication number Priority date Publication date Assignee Title
DD156619A1 (en) * 1981-02-26 1982-09-08 Hans Standhardt ARRANGEMENT FOR FIXING AN EXHAUST BURNER TO INTERNAL COMBUSTION ENGINES
DE10022052A1 (en) * 1999-05-26 2001-03-01 Gillet Heinrich Gmbh Turbine casing for exhaust gas turbocharger has inlet funnel, rotor casing and exhaust pipe made from embossed or deep-drawn sheet metal, and inlet funnel and exhaust pipe are welded to rotor casing which comprises two half shells
DE10061846A1 (en) * 2000-12-12 2002-06-13 Daimler Chrysler Ag Exhaust gas turbocharger for internal combustion engines has turbine housing comprising two individual sheet metal parts spaced from each other with interspace formed between inner and outer shells
FR2849469A1 (en) * 2002-12-27 2004-07-02 Renault Sa MOTOR VEHICLE EXHAUST MANIFOLD COMPRISING NON-CARRIER CONDUITS
FR2856735A1 (en) * 2003-06-30 2004-12-31 Renault Sa ENGINE COMPRISING A CATALYST AND A TURBOCHARGER FIXED ON THE CYLINDER BLOCK BY MEANS OF A COMMON SUPPORT
EP1541826A1 (en) * 2003-12-13 2005-06-15 Ford Global Technologies, LLC Turbocharger
EP1650409A1 (en) * 2004-10-21 2006-04-26 ABB Turbo Systems AG Mounting device of a turbocharger housing
FR2910544A1 (en) 2006-12-20 2008-06-27 Renault Sas High volume turbocharger fixing and maintaining device for internal combustion engine, has end cooperating with unit screwing central cover to turbine cover or cooperating with another unit screwing central cover to compressor cover

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Publication number Priority date Publication date Assignee Title
DE102012209562A1 (en) * 2012-06-06 2013-12-12 Continental Automotive Gmbh Turbine housing for an exhaust gas turbocharger
DE102012209560A1 (en) * 2012-06-06 2013-12-12 Continental Automotive Gmbh Turbine housing for turbocharger, has contour component that is provided with sealing contour realized as cast portion or forging device welded to neighboring housing portions
CN104350236A (en) * 2012-06-06 2015-02-11 大陆汽车有限公司 Turbine housing for turbocharger
CN104350236B (en) * 2012-06-06 2016-08-24 大陆汽车有限公司 Turbine cylinder for exhaust-driven turbo-charger exhaust-gas turbo charger
DE102012209562B4 (en) * 2012-06-06 2017-08-31 Continental Automotive Gmbh Turbine housing for an exhaust gas turbocharger
US9752457B2 (en) 2012-06-06 2017-09-05 Continental Automotive Gmbh Turbine housing for a turbocharger

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