EP2333265B1 - Collecteur de gaz d'échappement doté d'un déflecteur - Google Patents

Collecteur de gaz d'échappement doté d'un déflecteur Download PDF

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Publication number
EP2333265B1
EP2333265B1 EP10014314A EP10014314A EP2333265B1 EP 2333265 B1 EP2333265 B1 EP 2333265B1 EP 10014314 A EP10014314 A EP 10014314A EP 10014314 A EP10014314 A EP 10014314A EP 2333265 B1 EP2333265 B1 EP 2333265B1
Authority
EP
European Patent Office
Prior art keywords
exhaust manifold
exhaust
openings
manifold according
engine flange
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.)
Not-in-force
Application number
EP10014314A
Other languages
German (de)
English (en)
Other versions
EP2333265A1 (fr
Inventor
Elmar Grussmann
Fabian Fricke
Ralph Naubert
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP2333265A1 publication Critical patent/EP2333265A1/fr
Application granted granted Critical
Publication of EP2333265B1 publication Critical patent/EP2333265B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal

Definitions

  • the present invention relates to an exhaust manifold for mounting by means of a motor flange on a cylinder head of an internal combustion engine having at least two cylinders in series, wherein the exhaust manifold is made as a thin-walled sheet metal component in shell construction with an upper shell and a lower shell.
  • Exhaust manifolds can be made in a known manner from cast steel or built from individually welded together steel sheets or pipe fittings.
  • the advantage of Stahlgusskrümmern is that complicated geometries are relatively inexpensive to produce.
  • the weight of cast steel elbows is generally higher than that of welded sheet steel constructions.
  • cast steel manifolds have higher thermal inertia than welded exhaust manifolds.
  • Welded exhaust manifolds can only be produced with increased complexity and thus higher costs in complex geometries. However, they have a lower heat capacity due to their lower weight. That's an advantage.
  • the engines are often charged by a compressor, usually a turbocharger.
  • An increase in the efficiency of the turbocharger has an effect on the increase in efficiency of the internal combustion engine.
  • an exhaust manifold is known in which an upper shell and a lower shell are welded to a motor flange.
  • Such exhaust manifold is inexpensive to produce, but exposed to a direct thermal distortion due to the hot exhaust gas.
  • the only small shaping possibilities do not result in a direct possibility of influencing the pressure pulses present in the exhaust manifold.
  • Object of the present invention is therefore to provide an exhaust manifold, which allows a low heat capacity and cost manufacturability and an increase in efficiency of the internal combustion engine.
  • the exhaust manifold has a motor flange by means of which it is attached to a cylinder head of an internal combustion engine having at least two cylinders in series.
  • the exhaust manifold should be made as a thin-walled sheet metal component in shell construction with an upper shell and a lower shell.
  • Such an exhaust manifold is inventively characterized in that in the exhaust manifold on the cylinder side, in particular a one-piece baffle is used, which separates the interior of the exhaust manifold from the engine flange.
  • the engine flange is usually designed as a cast steel product, which gives the exhaust manifold a high thermal inertia.
  • the mass of the Motor flange is not readily reducible because it has a supporting function for the exhaust assembly and also subject to high thermal stresses. Therefore, the invention is the way to separate the flange area by area of the interior of the exhaust manifold. However, this does not take place in that the sheet metal shells of the exhaust manifold only partially, namely only in the region of the exhaust port openings, are connected to the motor flange, but rather that a baffle inside the exhaust manifold takes over the task of shielding.
  • baffle Depending on the design of the baffle is influenced by the course of the flow path of the exhaust gas within the exhaust manifold, which in turn has a positive effect on the light-off behavior of a downstream turbocharger, which increases the overall efficiency of the internal combustion engine.
  • the construction of thin-walled sheet metal components leads to a low heat capacity and thus to a low heat dissipation, so that a downstream catalyst faster the necessary. Operating temperature reached and thus emission limits can be better met.
  • baffle In a first development, only the surfaces of the motor flange facing the interior of the exhaust manifold are covered by a baffle. As a result, the heat energy contained in the exhaust gas is only partially possible, a heat input in the. To perform motor flange. It is within the scope of the invention quite possible to provide a plurality of individual baffles, each between the individual outlet duct openings of the Motor flange are arranged and are tuned individually to the prevailing in the region of these outlet channel openings flow conditions.
  • the guide plate has openings in the region of outlet channel openings of the motor flange.
  • the exhaust gas thus enters the exhaust manifold through the exhaust ports of the cylinder head and through the exhaust port openings of the engine flange.
  • the outlet channel openings in the baffle make it clear that the baffle extends around the openings.
  • the baffle may accordingly also have four openings, so that in total only one single baffle has to be produced, which is position-oriented or fixed on the sheet metal shells of the exhaust manifold or on the motor flange.
  • the guide plate has a collar in the region of its openings, which extend into the outlet channel openings.
  • sliding seats are formed between the collar and the outlet channel openings of the motor flange.
  • the baffle consists of a thin-walled sheet metal component, whereas the motor flange of a thick-walled cast material. consists.
  • the baffle is exposed directly to the hot exhaust gas flow, whereas the engine flange is exposed to ambient temperature. Especially in cold start behavior or even at full load operation, the different thermal expansion of the materials and types is noticeable. Any distortions that arise through different thermal expansions are compensated by a sliding seat, so that a better durability of the baffle is given.
  • the guide plate is at least partially spaced from the motor flange in a region between the openings.
  • This offers on the one hand the advantage that in the space spaced a cavity is formed, which thermally isolates the motor flange from the baffle.
  • the cavity may also be filled with exhaust gas, which, however, due to the gas inertia has a lower temperature and possibly a lower pressure ratio than the exhaust gas in the interior of the exhaust manifold. Even if the cavity is filled with exhaust gas, this does not mean that the engine flange is not separated from the interior of the baffle.
  • a hermetic, in particular gas-tight shielding which can only be realized with a particularly careful connection of the baffle with the upper shell and the lower shell. Rather, a shield is sought in the sense that the vast majority of the exhaust gas does not come into contact with the engine flange solely by the flow velocity and flow direction, which by pressure equalization between the interior of the exhaust manifold and the cavities separated therefrom, which also within the exhaust manifold There is a slight gas exchange, but essentially does not go beyond the said pressure equalization.
  • the advantages of the invention are thus achieved even if the guide plate is not gas-tight with the upper shell and the lower shell of the Exhaust manifold is connected, although a substantial gas tightness is sought.
  • Another advantage resulting from the cavities is that the interior of the exhaust manifold is reduced in volume. Particularly with regard to the response of the turbine wheel of a turbocharger, a small volume of the interior of the exhaust manifold is advantageous. An escaping gas shock from a cylinder in the form of an exhaust stroke is thus forwarded as directly as possible to the turbine blades. A reduction of the flow velocity due to an increasing volume of the exhaust manifold is thereby counteracted.
  • areas of the guide plate between the openings are preferably formed arcuate.
  • the volume of the interior of the exhaust manifold is purposefully reduced by the arc shape with respect to the exhaust passage.
  • An arcuate geometry in the context of the invention is to be understood as a geometry shape in which the greatest distance to the motor flange is located centrally between the two outlet channel openings and the distance to the outlet channel openings is reduced so that there is contact with the outlet openings at the end.
  • a triangular, trapezoidal or other shape is conceivable under an arcuate design.
  • gentle transitions are preferred, so that the arc is actually a circular arc or an elliptical section or has another shape composed of curved sections.
  • the shape must be optimally adapted to the internal combustion engine.
  • the exhaust back pressure in the exhaust system is to be observed.
  • Another influencing factor in the choice of the shape of the spacing of the guide plate from the engine flange between the outlet channel openings is, for example, the arrangement of a further flange for connecting an exhaust pipe or two flanges or an exhaust gas recirculation.
  • the arcuate area must therefore be identical in any case between all adjacent outlet openings.
  • the arcuate areas can be completely different from each other in their concrete embodiment. Decisive is their function to shield the engine flange and keep the exhaust or the heat input to form a cavity away from the motor flange while adjusting the flow cross sections.
  • the baffle is located on the upper shell and the lower shell circumferentially in a contact area. Due to the circumferential concern of the engine flange of the interior of the exhaust manifold, which is formed by upper, lower shell and baffle separated.
  • the contact area can be formed both non-gas-tight and gas-tight.
  • the contact area is formed parallel to a respectively corresponding surface of the upper and lower shell.
  • a substantially peripheral flanged edge is formed in the contact region, wherein the direction of the flare facing the engine flange or pointing away from the engine flange is formed.
  • the crimping edge increases the rigidity of the baffle against the high pressures occurring in the exhaust manifold interior.
  • the bead gives the entire exhaust manifold a higher rigidity against pressure and vibration, which affects the durability of the exhaust manifold. It is also possible in the course of the invention to attach a sealing compound to the peripheral flanged edge, so that the guide plate in the contact area is circumferentially sealed gas-tight.
  • the baffle in the contact area is at least partially fixedly connected to the upper shell and the lower shell, wherein the compound is particularly preferably made by means of material connection.
  • a connection by thermal joining is feasible.
  • Thermal joining offers the advantage that the exhaust manifold can be produced cost-effectively, but it also guarantees a particularly high durability.
  • the durability is important because different temperature dependent Extensions of the individual structural components occur. The thermal strains cause stresses, especially in the area of welds. Due to the vibration loads occurring in the exhaust area, it must absolutely be ensured that no components come loose, which, in addition to a functional impairment, could also lead to disturbing rattling noises.
  • FIG. 1 1 shows a perspective sectional view of an exhaust manifold 1 comprising a motor flange 2, an upper shell 3 and a lower shell 4.
  • a baffle 5 is inserted into the interior 6 of the exhaust manifold 1 thus formed.
  • the guide plate 5 separates the interior 6 of the exhaust manifold 1 from surfaces 7 of the motor flange 2.
  • FIG. 2 shows a longitudinal section in a plan view of an exhaust manifold 1 according to the invention.
  • the baffle 5 in this case has openings 8, which extend into outlet channel openings 9 of the motor flange 2.
  • the openings 8 of the baffle 5 have to collar 10.
  • the baffle 5 separates in areas between the openings 8, the surfaces 7 of the motor flange 2 from the interior 6 of the exhaust manifold 1.
  • the areas 11 between the openings 8 are preferably formed arcuate.
  • the central arcuate region on the image plane has a greater extent into the interior 6 than the arcuate regions lying on the edge.
  • the respective outer arcuate region can also be made flatter because the housing of the exhaust manifold 1 has a smaller cross section in its end regions than in its central region where the outlet flange 14 is located, to which the collected exhaust gas is supplied.
  • FIG. 1 a flange 15 of an exhaust gas recirculation can be seen.
  • the exhaust flange 14 and the flange 15 for exhaust gas recirculation are in this embodiment at an angle to each other, wherein the flange 15 is disposed in the transition region of the upper shell 3 to the lower shell 4.
  • the outlet flange 14 is located in the region of the lower shell 4 in this exemplary embodiment.
  • FIG. 1 It should also be noted that there are two recesses 16 in the area of the upper shell 3. These recesses serve to fix the baffle 5, namely by welding in the region of the recesses 16. The welding takes place with flanged edges 13 of the baffle 5. The flanged edges 13 belong to a contact area 12 which runs parallel to the corresponding surfaces of the upper and lower shell 3, 4.
  • FIG. 1 It can be seen that the upper and lower shell 3, 4 are not flat at their opposite outer sides, but have beads 17, which are necessary for mounting technical reasons for screwing the engine flange 2 to an internal combustion engine, not shown.
  • the flanged edge 13 is adapted in its course to the beads as well as to the remaining inner contour of the upper and lower shell 3, 4 in order to produce the highest possible gas tightness.
  • the recesses 16 are located between the beads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Claims (12)

  1. Collecteur de gaz d'échappement (1) destiné à être monté sur une culasse d'un moteur à combustion interne comprenant au moins deux cylindres disposés en ligne au moyen d'une bride (2) de moteur, dans lequel le collecteur de gaz d'échappement (1) est fabriqué comme un composant en tôle à paroi mince avec un mode de construction basée sur des coques comprenant une coque supérieure (3) et une coque inférieure (4), telles que la coque supérieure (3) et la coque inférieure (4) sont entièrement soudées avec la bride de moteur,
    caractérisé en ce qu'une tôle de guidage (5) est intégrée dans le collecteur de gaz d'échappement (1) du côté de la culasse, laquelle sépare un espace intérieur (6) du collecteur de gaz d'échappement (1) vis-à-vis de la bride (2) de moteur.
  2. Collecteur de gaz d'échappement selon la revendication 1, caractérisé en ce que les surfaces (7), de la bride (2) de moteur orientées vers l'espace intérieur (6) sont recouvertes par la tôle de guidage (5).
  3. Collecteur de gaz d'échappement selon la revendication 1 ou 2, caractérisé en ce que la tôle de guidage (5) présente des ouvertures (8) dans la région d'ouvertures (9) de canaux de sortie de la bride (2) de moteur.
  4. Collecteur de gaz d'échappement selon l'une des revendications 1 à 3, caractérisé en ce que la tôle de guidage (5) comporte, dans la région de ses ouvertures (8), des collerettes (10) qui s'étendent jusque dans les ouvertures (9) des canaux de sortie.
  5. Collecteur de gaz d'échappement selon la revendication 4, caractérisé en ce que des assemblages à frottement sont réalisés entre les collerettes (10) et les ouvertures (9) des canaux de sortie de la bride (2) de moteur.
  6. Collecteur de gaz d'échappement selon l'une des revendications 3 à 5, caractérisé en ce que la tôle de guidage (5) est écartée au moins localement de la bride (2) de moteur dans une portion (11) s'étendant entre les ouvertures (8).
  7. Collecteur de gaz d'échappement selon la revendication 6, caractérisé en ce que la portion (11) s'étendant entre les ouvertures (8) est réalisée en forme d'arc.
  8. Collecteur de gaz d'échappement selon l'une des revendications 1 à 7, caractérisé en ce que la tôle de guidage (5) s'appuie contre la coque supérieure (3) et contre la coque inférieure (4) en périphérie au niveau d'une zone d'appui (12).
  9. Collecteur de gaz d'échappement selon la revendication 8, caractérisé en ce que la zone d'appui (12) est réalisée parallèle à une surface respective correspondante de la coque supérieure (3) et de la coque inférieure (4).
  10. Collecteur de gaz d'échappement selon la revendication 8 ou 9, caractérisé en ce que la zone d'appui (12) est réalisée comme une arête rabattue (13) sensiblement périphérique, la direction du rabattement étant choisi en direction de la bride (2) de moteur ou en éloignement de la bride (2) de moteur.
  11. Collecteur de gaz échappement selon l'une des revendications 8 à 10, caractérisé en ce que, dans la zone d'appui (12), la tôle de guidage (5) est reliée de manière fixe au moins par tronçon à la coque supérieure (3) et à la coque inférieure (4).
  12. Collecteur de gaz d'échappement selon la revendication 11, caractérisé en ce que la liaison est établie par coopération de matières, de préférence par jointoyage thermique.
EP10014314A 2009-12-14 2010-11-05 Collecteur de gaz d'échappement doté d'un déflecteur Not-in-force EP2333265B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009058047A DE102009058047A1 (de) 2009-12-14 2009-12-14 Abgaskrümmer mit Leitblech

Publications (2)

Publication Number Publication Date
EP2333265A1 EP2333265A1 (fr) 2011-06-15
EP2333265B1 true EP2333265B1 (fr) 2011-11-02

Family

ID=43735839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10014314A Not-in-force EP2333265B1 (fr) 2009-12-14 2010-11-05 Collecteur de gaz d'échappement doté d'un déflecteur

Country Status (5)

Country Link
US (1) US8549851B2 (fr)
EP (1) EP2333265B1 (fr)
JP (1) JP2011122594A (fr)
AT (1) ATE531912T1 (fr)
DE (1) DE102009058047A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047448B4 (de) * 2008-09-16 2020-09-24 Bayerische Motoren Werke Aktiengesellschaft Abgasturbolader
DE102011050506B4 (de) 2011-05-19 2013-04-18 Benteler Automobiltechnik Gmbh Abgasturbolader
DE102012009090A1 (de) 2012-05-09 2013-11-14 Benteler Automobiltechnik Gmbh Anbindung eines doppelwandigen Turboladergehäuses
DE102013109446B4 (de) 2013-08-30 2015-11-26 Benteler Automobiltechnik Gmbh Abgaskrümmer mit Isolationshülse
DE102013111957B4 (de) * 2013-10-30 2016-12-01 Benteler Automobiltechnik Gmbh Abgasleitungseinheit eines Kraftfahrzeugs
DE102014103820A1 (de) 2014-03-20 2015-09-24 Benteler Automobiltechnik Gmbh Abgaskrümmer für eine Abgasanlage eines Verbrennungsmotors
DE102014103809A1 (de) 2014-03-20 2015-12-03 Benteler Automobiltechnik Gmbh Abgaskrümmer für eine Abgasanlage eines Verbrennungsmotors
DE102014105656B4 (de) 2014-04-22 2017-02-02 Benteler Automobiltechnik Gmbh Abgaskrümmer
WO2016164020A1 (fr) * 2015-04-09 2016-10-13 Cummins Inc. Nervures de renforcement de collecteur d'échappement
GB2532546B (en) * 2015-08-19 2017-02-22 Litchfield Iain Exhaust manifold
US10544703B2 (en) 2017-01-30 2020-01-28 Garrett Transportation I Inc. Sheet metal turbine housing with cast core
US11732729B2 (en) 2021-01-26 2023-08-22 Garrett Transportation I Inc Sheet metal turbine housing

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US4537027A (en) * 1983-11-21 1985-08-27 Apx Group, Inc. Hybrid exhaust manifold
JPS63158527A (ja) 1986-08-25 1988-07-01 Canon Inc 光学変調器
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JPH041292Y2 (fr) * 1987-04-04 1992-01-17
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DE4444760C2 (de) * 1994-12-16 2003-02-13 Eberspaecher J Gmbh & Co Luftspaltisolierter Abgaskrümmer
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US5784881A (en) 1996-01-11 1998-07-28 Hitachi Metals, Ltd. Multi-part exhaust manifold assembly with welded connections
JPH09296725A (ja) * 1996-01-11 1997-11-18 Hitachi Metals Ltd 分割型排気マニホルド
JP3344210B2 (ja) * 1996-05-27 2002-11-11 日産自動車株式会社 二重管エキゾーストマニホールド
JP4283927B2 (ja) * 1999-03-02 2009-06-24 フタバ産業株式会社 エギゾーストマニホルド
WO2001011209A1 (fr) * 1999-08-05 2001-02-15 Haerle Hans A Collecteur de gaz d'echappement
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DE10352960B4 (de) 2003-11-13 2006-06-14 Benteler Automobiltechnik Gmbh Gehäuseanordnung für den Turbolader einer Brennkraftmaschine
DE10359073B4 (de) * 2003-12-17 2006-03-02 Daimlerchrysler Ag Abgaskrümmer
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US8356411B2 (en) * 2008-04-07 2013-01-22 Benteler Automotive Corporation Exhaust manifold with hybrid construction and method

Also Published As

Publication number Publication date
US20110308238A1 (en) 2011-12-22
DE102009058047A1 (de) 2011-06-16
ATE531912T1 (de) 2011-11-15
EP2333265A1 (fr) 2011-06-15
JP2011122594A (ja) 2011-06-23
US8549851B2 (en) 2013-10-08

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