FR2933138A3 - Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks - Google Patents

Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks Download PDF

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Publication number
FR2933138A3
FR2933138A3 FR0854211A FR0854211A FR2933138A3 FR 2933138 A3 FR2933138 A3 FR 2933138A3 FR 0854211 A FR0854211 A FR 0854211A FR 0854211 A FR0854211 A FR 0854211A FR 2933138 A3 FR2933138 A3 FR 2933138A3
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FR
France
Prior art keywords
turbine
block
heat shield
compressor
turbine block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR0854211A
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French (fr)
Inventor
Pascal Hottebart
Malet Etienne De
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR0854211A priority Critical patent/FR2933138A3/en
Publication of FR2933138A3 publication Critical patent/FR2933138A3/en
Withdrawn legal-status Critical Current

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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
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • 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
    • 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
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/24—Heat or noise insulation
    • 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

Abstract

The device has a monoblock thermal screen (7) locally arranged around a turbine block enclosing a turbine of a turbocharger. The screen is provided with orifices (11) for its fixation, and a bottom wall (70) peripherally extended by a flanged edge (71). Fixation units i.e. screws, traverse the orifices, and connect the turbine block and a central case. The central case surrounds an area where a connection shaft between the turbine and an associated compressor passes. The central case is interposed between the turbine block and a compressor block enclosing the compressor.

Description

L'invention concerne un dispositif de protection thermique d'organes périphériques d'un moteur à explosion équipé d'un turbocompresseur, ce dispositif comprenant un écran thermique disposé localement autour du bloc turbine renfermant la turbine du turbocompresseur. Il existe un besoin de protection thermique de la zone du turbocompresseur, et en particulier du bloc renfermant la turbine de celui-ci. Ce besoin n'est pas satisfait de manière appropriée 10 actuellement. En particulier, les solutions proposées sont plus particulièrement orientées vers des propositions où le montage de l'écran thermique est réalisé chez le constructeur automobile, après que celui-ci ait reçu le 15 moteur équipé du turbocompresseur. Un but de l'invention est de prévoir une solution orientée vers le cas d'un montage de l'écran thermique chez le fournisseur du turbocompresseur. D'autres buts visent à favoriser une monte rapide, une ergonomie et/ou 20 un moindre coût de revient de la solution. Pour atteindre tout ou partie de ces buts, il est proposé que l'écran thermique présente, pour sa fixation, des orifices à travers lesquels passent des moyens (de préférence des vis) de fixation reliant le bloc turbine 25 et le carter central qui entoure la zone où passe l'arbre de liaison entre la turbine et un compresseur associé et qui est interposé entre le bloc turbine et le bloc compresseur renfermant ledit compresseur. D'autres caractéristiques et avantages de 30 l'invention apparaitront encore de la description complémentaire qui suit, faite en référence aux dessins annexés dans lesquels : - les figures 1 et 2 montrent deux vues en perspectives d'un ensemble turbocompresseur, - et la figure 3 montre de façon isolée, le seul écran thermique, dans une solution conforme à l'invention. Aux figures 1,2, on a représenté, dans un état monté, un dispositif 1 de protection thermique d'organes périphériques d'un moteur à combustion interne 3 équipé d'un turbocompresseur 5. The invention relates to a device for thermal protection of peripheral members of an internal combustion engine equipped with a turbocharger, this device comprising a heat shield disposed locally around the turbine unit enclosing the turbine of the turbocharger. There is a need for thermal protection of the zone of the turbocharger, and in particular of the block enclosing the turbine thereof. This need is not being adequately satisfied at present. In particular, the proposed solutions are more particularly oriented towards proposals where the assembly of the heat shield is performed at the car manufacturer, after it has received the engine equipped with the turbocharger. An object of the invention is to provide a solution oriented to the case of a mounting of the heat shield at the supplier of the turbocharger. Other aims are to promote rapid rise, ergonomics and / or lower cost of the solution. To achieve all or part of these goals, it is proposed that the heat shield has, for its attachment, orifices through which pass means (preferably screws) fixing connecting the turbine block 25 and the central casing that surrounds the zone where the connecting shaft passes between the turbine and an associated compressor and which is interposed between the turbine unit and the compressor block enclosing said compressor. Other features and advantages of the invention will become apparent from the following additional description, with reference to the accompanying drawings, in which: FIGS. 1 and 2 show two perspective views of a turbocharger assembly, and FIG. 3 shows in isolation, the only heat shield, in a solution according to the invention. In FIG. 1, there is shown, in a mounted state, a device 1 for thermal protection of peripheral members of an internal combustion engine 3 equipped with a turbocharger 5.

Le dispositif 1 comprend un écran thermique 7 disposé localement autour du bloc turbine 9 renfermant la turbine du turbocompresseur (non visible ; repère caché 90). L'écran thermique 7 est de préférence métallique et protège thermiquement vis-à-vis de la chaleur dégagée par le turbocompresseur, et en particulier par le bloc turbine 9. Cet écran thermique présente, pour sa fixation, des orifices 11 à travers lesquels passent (des moyens de fixation tels que) des vis 13. Ces moyens de fixation relient le bloc turbine 9 et le carter central 14 qui entoure la zone 15 où passe l'arbre (non visible; repère caché 150) de liaison entre la turbine et le compresseur associé (non visible ; repère caché 900). Cet arbre est interposé entre le bloc turbine 9 et le bloc compresseur 17 renfermant ledit compresseur. En 18, on a repéré l'actuateur du turbocompresseur, situé au droit de la zone 15. Les têtes des vis 13 sont situées du côté du carter 30 central 14, là où débouchent les orifices 11. Tel que représenté à la figure 3, l'écran thermique 7 présente une forme de cloche avec une paroi de fond 70 globalement discoïdale à disposer face au bloc turbine, cette paroi de fond se prolongeant périphériquement par un bord tombé 71 s'étendant localement autour du bloc turbine 9. The device 1 comprises a heat shield 7 disposed locally around the turbine unit 9 enclosing the turbine of the turbocharger (not visible, hidden mark 90). The heat shield 7 is preferably metallic and thermally protected vis-à-vis the heat released by the turbocharger, and in particular by the turbine block 9. This heat shield has, for its fixing, orifices 11 through which pass (Fastening means such as) screws 13. These fastening means connect the turbine block 9 and the central casing 14 which surrounds the zone 15 where the shaft (not visible, hidden marker 150) connecting the turbine and the associated compressor (not visible, hidden landmark 900). This shaft is interposed between the turbine unit 9 and the compressor block 17 enclosing said compressor. At 18, the actuator of the turbocharger, situated in line with the zone 15, is located. The heads of the screws 13 are located on the side of the central casing 14, where the orifices 11 open out. As shown in FIG. the heat shield 7 has a bell shape with a generally discoidal bottom wall 70 to be disposed facing the turbine block, this bottom wall extending peripherally by a falling edge 71 extending locally around the turbine block 9.

Les orifices de fixation de l'écran thermique s'étendent à travers la paroi de fond 70, parallèlement à l'axe 150a de l'arbre précité de liaison turbine/compresseur. Le bord tombé 71 favorise la rigidité de l'écran 10 thermique et atténue les vibrations. L'écran thermique 7 est avantageusement monobloc de manière à être assemblé facilement notamment sur les chaînes de montage Par ailleurs, compte tenu de son montage en regard 15 du pied élargi 19 de fixation du bloc turbine 9 au reste du bloc moteur (non illustré) et de l'excroissance constituée par la patte de béquillage 21 liée au bloc turbine 9 et qu'on préfère ici laisser à l'extérieur de la zone protégée, le bord tombé périphérique 71 présente, 20 comme illustré, une moindre largeur 11 en regard du pied 19, ainsi que latéralement, jusqu'à la patte de béquillage 21. Ainsi, le bord tombé périphérique 71 présente localement une portion 710 de moindre largeur par rapport 25 à la largeur nominale 12 qu'il présente pour entourer le bloc turbine 9 sur l'essentiel au moins de sa largeur 13. On conseille même que cette portion 710 de moindre largeur s'amenuise dans une direction, suivant une circonférence (C) de ce bord tombé périphérique 71.The fixing holes of the heat shield extend through the bottom wall 70, parallel to the axis 150a of the aforementioned turbine / compressor connection shaft. The dropped edge 71 promotes the rigidity of the thermal screen and attenuates the vibrations. The heat shield 7 is advantageously monobloc so as to be easily assembled especially on the assembly lines Moreover, given its mounting facing 15 enlarged foot 19 for fixing the turbine block 9 to the rest of the engine block (not shown) and the protuberance constituted by the crotch lug 21 connected to the turbine unit 9 and which it is preferred here to leave outside the protected zone, the peripheral flanged edge 71 has, as illustrated, a smaller width 11 facing each other. of foot 19, as well as laterally, to the crotch lug 21. Thus, the peripheral flanged edge 71 locally has a portion 710 of smaller width than the nominal width 12 that it has to surround the turbine block 9 on the essential at least its width 13. It is even recommended that this portion 710 of smaller width diminishes in one direction, along a circumference (C) of this peripheral fallen edge 71.

30 Ceci est permet avantageusement de rigidifier l'écran thermique et d'atténuer des vibrations. This is advantageously makes it possible to stiffen the heat shield and to attenuate vibrations.

Claims (6)

Revendications1. Dispositif de protection thermique d'organes périphériques d'un moteur à combustion équipé d'un turbocompresseur, ce dispositif comprenant un écran thermique (7) disposé localement autour du bloc turbine (9) renfermant la turbine du turbocompresseur, caractérisé en ce que l'écran thermique (7) présente, pour sa fixation, des orifices (11) à travers lesquels passent des moyens (13) de fixation reliant le bloc turbine et le carter central (14) qui entoure la zone où passe l'arbre (150) de liaison entre la turbine et un compresseur associé et qui est interposé entre le bloc turbine (9) et le bloc compresseur (17) renfermant ledit compresseur. Revendications1. Device for thermal protection of peripheral members of a combustion engine equipped with a turbocharger, this device comprising a heat shield (7) disposed locally around the turbine block (9) enclosing the turbine of the turbocharger, characterized in that the heat shield (7) has, for its fixing, orifices (11) through which pass means (13) for fixing connecting the turbine block and the central casing (14) which surrounds the zone where the shaft passes (150) link between the turbine and an associated compressor and which is interposed between the turbine block (9) and the compressor block (17) enclosing said compressor. 2. Dispositif selon la revendication 1, caractérisé en ce que l'écran thermique (7) présente une forme de cloche avec une paroi de fond (70) globalement discoïdale à disposer face au bloc turbine, cette paroi de fond se prolongeant périphériquement par un bord tombé (71) s'étendant alors localement autour dudit bloc turbine (9), les orifices (11) de fixation de l'écran thermique s'étendant à travers la paroi de fond (70), parallèlement à l'arbre de liaison (15). 2. Device according to claim 1, characterized in that the heat shield (7) has a bell shape with a generally discoidal bottom wall (70) to be arranged facing the turbine block, this bottom wall extending peripherally by a falling edge (71) then extending locally around said turbine block (9), the heat shield fixing holes (11) extending through the bottom wall (70), parallel to the connecting shaft (15). 3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'écran thermique (7) est monobloc. 3. Device according to one of the preceding claims, characterized in that the heat shield (7) is monobloc. 4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le bord tombé périphérique (71) présente une moindre largeur en regard du pied élargi (19) de fixation du bloc turbine (9),ainsi que latéralement, jusqu'à la patte de béquillage (21). 4. Device according to one of the preceding claims, characterized in that the peripheral fallen edge (71) has a smaller width facing the enlarged foot (19) for fixing the turbine block (9), as well as laterally, until the crutch leg (21). 5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le bord tombé périphérique (71) présente localement une portion (710) de moindre largeur par rapport à la largeur nominale qu'il présente pour entourer le bloc turbine (9) sur l'essentiel au moins de sa largeur, ladite portion de moindre largeur s'amenuisant dans une direction, suivant une circonférence (C) dudit bord tombé périphérique. 5. Device according to one of the preceding claims, characterized in that the peripheral flange (71) locally has a portion (710) of lesser width relative to the nominal width it has to surround the turbine block (9). on the essential at least its width, said portion of smaller width decreasing in one direction, following a circumference (C) of said peripheral fallen edge. 6. Moteur à combustion équipé du dispositif selon l'une des revendications précédentes. 6. Combustion engine equipped with the device according to one of the preceding claims.
FR0854211A 2008-06-25 2008-06-25 Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks Withdrawn FR2933138A3 (en)

Priority Applications (1)

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FR0854211A FR2933138A3 (en) 2008-06-25 2008-06-25 Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks

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FR0854211A FR2933138A3 (en) 2008-06-25 2008-06-25 Thermal protection device for peripheral unit of e.g. spark ignition engine, has fixation units traversing orifices of monoblock thermal screen, and connecting turbine block and case that is interposed between turbine and compressor blocks

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2995633A1 (en) * 2012-09-18 2014-03-21 Peugeot Citroen Automobiles Sa ACOUSTIC ATTENUATOR FORMING THERMAL SCREEN FOR SUPERIMUM THERMAL MOTOR
DE102013220817A1 (en) * 2013-10-15 2015-04-16 Volkswagen Aktiengesellschaft Exhaust gas turbocharger and motor vehicle
FR3027345A1 (en) * 2014-10-20 2016-04-22 Renault Sa DEVICE FOR FIXING A SCREEN ABOVE A CARTER
FR3053756A1 (en) * 2016-07-05 2018-01-12 Peugeot Citroen Automobiles Sa THERMAL PROTECTION DEVICE FOR THERMAL MOTOR TURBOCHARGER
WO2021197818A1 (en) * 2020-04-02 2021-10-07 Psa Automobiles Sa Motor vehicle internal combustion engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677705A1 (en) * 1991-06-11 1992-12-18 Meillor Sa Device for the thermal protection of the peripheral members of a combustion engine equipped with a turbocompressor
US6510833B1 (en) * 2001-12-20 2003-01-28 American Diesel & Gas, Inc. Fuel saving combustion engine insulation method and system
DE10323731A1 (en) * 2003-05-24 2004-12-09 Daimlerchrysler Ag Exhaust turbocharger for an internal combustion engine with temperature-loaded turbine casing, has shield element to reduce heat transfer between turbine casing and surrounding area

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677705A1 (en) * 1991-06-11 1992-12-18 Meillor Sa Device for the thermal protection of the peripheral members of a combustion engine equipped with a turbocompressor
US6510833B1 (en) * 2001-12-20 2003-01-28 American Diesel & Gas, Inc. Fuel saving combustion engine insulation method and system
DE10323731A1 (en) * 2003-05-24 2004-12-09 Daimlerchrysler Ag Exhaust turbocharger for an internal combustion engine with temperature-loaded turbine casing, has shield element to reduce heat transfer between turbine casing and surrounding area

Non-Patent Citations (1)

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Title
CIEROCKI K ET AL: "NEUE WERKSTOFFE UND ENTWICKLUNGS-TOOLS FUER DEN HITZESCHUTZ", MTZ MOTORTECHNISCHE ZEITSCHRIFT, VIEWEG VERLAG, WIESBADEN, DE, vol. 62, no. 12, 1 December 2001 (2001-12-01), pages 1044 - 1050, XP001111813, ISSN: 0024-8525 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2995633A1 (en) * 2012-09-18 2014-03-21 Peugeot Citroen Automobiles Sa ACOUSTIC ATTENUATOR FORMING THERMAL SCREEN FOR SUPERIMUM THERMAL MOTOR
WO2014044950A1 (en) * 2012-09-18 2014-03-27 Peugeot Citroen Automobiles Sa Noise attenuator acting as a heat screen for a supercharged combustion engine
CN104781520A (en) * 2012-09-18 2015-07-15 标致·雪铁龙汽车公司 Noise attenuator acting as a heat screen for a supercharged combustion engine
CN104781520B (en) * 2012-09-18 2018-04-03 标致·雪铁龙汽车公司 Acoustical attenuators for the formation heat screen of engine with supercharger
DE102013220817A1 (en) * 2013-10-15 2015-04-16 Volkswagen Aktiengesellschaft Exhaust gas turbocharger and motor vehicle
FR3027345A1 (en) * 2014-10-20 2016-04-22 Renault Sa DEVICE FOR FIXING A SCREEN ABOVE A CARTER
FR3053756A1 (en) * 2016-07-05 2018-01-12 Peugeot Citroen Automobiles Sa THERMAL PROTECTION DEVICE FOR THERMAL MOTOR TURBOCHARGER
WO2021197818A1 (en) * 2020-04-02 2021-10-07 Psa Automobiles Sa Motor vehicle internal combustion engine

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