EP0715064B1 - Système d'échappement - Google Patents

Système d'échappement Download PDF

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Publication number
EP0715064B1
EP0715064B1 EP95118038A EP95118038A EP0715064B1 EP 0715064 B1 EP0715064 B1 EP 0715064B1 EP 95118038 A EP95118038 A EP 95118038A EP 95118038 A EP95118038 A EP 95118038A EP 0715064 B1 EP0715064 B1 EP 0715064B1
Authority
EP
European Patent Office
Prior art keywords
connection
exhaust system
lambda probe
opening
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.)
Expired - Lifetime
Application number
EP95118038A
Other languages
German (de)
English (en)
Other versions
EP0715064A1 (fr
Inventor
Klaus Krüger
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.)
Erhardt Bischoff & Co KG GmbH
Original Assignee
Erhardt Bischoff & Co KG 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 Erhardt Bischoff & Co KG GmbH filed Critical Erhardt Bischoff & Co KG GmbH
Publication of EP0715064A1 publication Critical patent/EP0715064A1/fr
Application granted granted Critical
Publication of EP0715064B1 publication Critical patent/EP0715064B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor

Definitions

  • the invention is based on an exhaust system according to the preamble of claim 1.
  • Such an exhaust system is from document US-A-4 833 882 known.
  • Exhaust manifolds for four-cylinder engines are improving the torque curve often combines two cylinder tubes, so that at the end of the exhaust manifold two manifolds available. These two manifolds are by means of of a double-flow down pipe to the catalyst housing.
  • a lambda probe must be placed in front of the catalytic converter which, for example, either directly before the merge the catalytic converter housing or at the outlet of the exhaust manifold is arranged. If the exhaust manifold in two manifolds opens, a connection must be made for the lambda sensor two manifolds are created to ensure an even To ensure flow to the lambda sensor without the double flow of the front pipe is impaired.
  • a flange connection is already known for attaching the cylinder pipes of an exhaust manifold to the cylinder head itself (DE-OS 43 13 091), in which the flange is formed in two parts from a sealing plate and a hood, which is welded to the sealing plate on all sides, but has a cavity forms with the sealing plate. Secondary air can be blown into the cavity or an exhaust gas recirculation line can be connected.
  • the invention has for its object a simple, inexpensive to be produced and yet the uniform flow flange connection for an exhaust system create.
  • the invention proposes an exhaust system with the features of claim 1. Further training of the Invention are the subject of the dependent claims.
  • the production of the upper part as a deep-drawn sheet metal part has not only the advantage of simple production, but the further Advantage that the temperatures transmitted by the manifolds and the resulting thermal expansion over the soft drawn part can be dismantled. Because when merging there is an air gap in the upper part with the sealing plate there is an insulating effect at which the thermal bridge is far less than with a solid flange. This leads to a thermal relief of the flange connection between the exhaust manifold and the Forward tube.
  • a nozzle can be used in an opening of the upper part can be used and attached there.
  • the neck can manufactured as a turned part or as an extruded part and with be provided with a thread so that the commercially available lambda probes can be used without any change.
  • the Neck can be inserted into the opening of the upper part and with an all-round weld seam connected to the upper part become.
  • the upper part in the connection opening for the area surrounding the lambda sensor has a distance from the sealing plate. Thus a more even flow to the lambda probe can be achieved.
  • the top can flange an opening for the manifold surrounding, facing away from the sealing plate Show necking. This can be done with this collar Fasten the collecting tube, especially with a rotating one Weld on the weld.
  • the manifold only on the upper part with an axial distance from its front edge is attached by the sealing plate. Because of the axial The gas flowing through can be at a distance from the front edge laterally radially through the connection provided to the lambda probe reach. It is therefore not necessary to have a manifold to use with a side opening.
  • the tunnel-like expression can be in the manufacture of the Upper part as deep drawn part without additional work step very easy to manufacture.
  • the flange can have two openings for attachment have two manifolds, in which case the connection connected to both openings for the lambda probe is.
  • the lambda sensor can then determine the exhaust gas behavior of both Collector pipes leading cylinders of the internal combustion engine consider.
  • connection for the lambda sensor symmetrical to the two openings for the Collected pipes is arranged and designed. This will make it ensured that both manifolds evenly from the lambda probe be checked so that a real averaging of the exhaust gas behavior is carried out.
  • the invention also proposes in further training that the Connections between the openings for the manifolds and the lambda probe have the same flow resistance can.
  • the top can be used with the Sealing plate to be welded, in particular by means of a circumferential weld.
  • the top can be at least partially flat rest on the sealing plate, especially in their Edge area.
  • Fig. 1 shows a simplified view of a part the flange connection, namely on the sealing plate applied top 1.
  • the top 1 contains, just like the underlying sealing plate 2, two of the same size side by side Openings 3 with a circular shape. Each opening 3 is intended for the attachment of a collecting tube that is connected to a double-flow front pipe is to be connected.
  • the upper part contains a third opening 4, which also Has a circular shape, but a different one in the example shown Size. This opening forms a connection 5 for a lambda sensor.
  • the opening 4 is symmetrical to the two openings 3 for the manifolds arranged, that is, the center of connection 5 for the lambda probe on the perpendicular lies between the two openings for the header pipes.
  • connection 6 From each opening 3 for a collecting pipe leads laterally tunnel-like connection 6 approximately radially to the opening 4 for the lambda sensor. These connections 6 are considered out of the area protrusions of the upper part are formed. Both Connections 6 have the same length and the same cross-sectional shape, so that they also have the same flow resistance for a flowing gas to have.
  • Fig. 2 is a cross section along line II-II in Fig. 1 represents.
  • the cross section is laid so that it passes through the centers of the opening 3 and the opening 4 leads and thus also through the longitudinal median plane of one connection 6.
  • FIG. 2 shows the upper part 1 in the same state as FIG. 1, that is, in the correct position on the sealing plate 2 put on, if necessary already attached.
  • the sealing plate 2 contains two openings 3 corresponding Openings 7, which are aligned with the openings 3.
  • the openings 3 of the upper part 1 are formed by neckings 8, that protrude from the sealing plate 2.
  • the necklines 8 form short cylindrical lugs into which the collecting tube 9 can be inserted a short distance.
  • the connection of the manifold 9 with the neck 8 happens through a circumferential weld.
  • the manifold 9 is only so far inserted into the neck 8 that the front edge 10 of the Collecting tube a distance from the top of the sealing plate 2 maintains.
  • the tunnel-like connection 6, which is characterized by an expression of the Upper part 1 is formed, opens laterally in the neck 8. Due to the axial distance of the front edge 10 of the header 9 can from the manifold 9 in the neck 8th Gas arriving laterally through connection 6 to the right area around the connection opening 4 shown in FIG.
  • the upper part 1 has in the area surrounding the opening 4 likewise, similar to the area of connection 6, one Distance from the sealing plate.
  • the cross section of the transition 11 is approximately quarter-arch. in this area opens the connection 6.
  • a nozzle 12 is inserted, which in Fig. 2 is shown slightly above the opening 4.
  • Socket 12 can be a turned part or an extruded part act.
  • This nozzle 12 does not contain on his illustrated, facing away from the upper part 1, a thread, so that a commercially available lambda probe is screwed in can be.
  • the connection of the connector 12 to the upper part also happens so that the front edge 13 a distance from the sealing plate 2. Again, a weld can be made along the circumference of the connector 12 for their connection serve with the top 1.
  • a flange that has a Connected fore-pipe can be.
  • this further component can be, for example, stud bolts or screw bolts 14 serve for the holes 15 schematically indicated in Fig. 1 are. These holes can both in the sealing plate 2 as also be present in the upper part 1. But it is also possible that the holes 15 only exist in the sealing plate are so that the upper part 1 in the area of these holes 15 for Housing the heads of bolt bulges 16 which is shown in the perspective view in Fig. 3 are.
  • Fig. 3 shows a perspective view a flange provided with two manifolds 9.
  • One can 3 also shows that the header pipes and the connecting piece 12 also arranged obliquely with respect to the plane of the flange could be.
  • the connection 6 is also clear here between the connection for the lambda sensor and the manifold 9 seen through a tunnel-like design of the upper part 1 of the flange is formed.
  • the resulting one located at the end of an exhaust manifold
  • the flange can then be connected to the forward tube be used, for example by screwing the stud bolt 14. Wedging would also be possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Gasket Seals (AREA)

Claims (12)

  1. Système d'échappement, comprenant au moins un tuyau collecteur (9) d'un coude d'échappement, un tuyau auxiliaire menant à un boítier de catalyseur et une bride présentant une sonde lambda comme élément de liaison, la bride présentant une ouverture respective (7) pour le tuyau collecteur (9) et pour le tuyau auxiliaire et un branchement (5) pour la sonde lambda, qui est relié à au moins une ouverture (7) de la bride, caractérisé en ce que la bride présente une plaque d'étanchéité (2) et une partie supérieure (1), assemblée à la plaque d'étanchéité (2), réalisée sous forme de pièce emboutie en tôle et présentant une ouverture (3) correspondant à chaque ouverture (7) de la plaque d'étanchéité (2), et le branchement (5) pour la sonde lambda.
  2. Système d'échappement selon la revendication 1, dans lequel le branchement (5) pour la sonde lambda présente une ouverture (4) pour l'insertion et la fixation d'une tubulure (12) dans laquelle la sonde lambda peut être fixée, notamment par vissage.
  3. Système d'échappement selon la revendication 1 ou 2, dans lequel la partie supérieure (1) présente, dans la région du branchement pour la sonde lambda, une distance de la plaque d'étanchéité (2).
  4. Système d'échappement selon une des revendications précédentes, dans lequel la partie supérieure (1) présente un collet (8), entourant son ouverture (3) pour le tuyau collecteur (9) et dirigé en éloignement de la plaque d'étanchéité (2), pour la fixation du tuyau collecteur (9).
  5. Système d'échappement selon une des revendications précédentes, dans lequel le tuyau collecteur (9) n'est fixé que sur la partie supérieure (1), avec une distance axiale entre son bord frontal (10) et la plaque d'étanchéité (2).
  6. Système d'échappement selon une des revendications précédentes, dans lequel la partie supérieure (1) présente un relief du genre tunnel, menant de l'ouverture (3) pour le tuyau collecteur (9) au branchement (5) pour la sonde lambda.
  7. Système d'échappement selon une des revendications précédentes, comportant deux ouvertures (3) pour la fixation de deux tuyaux collecteurs (9), le branchement (5) pour la sonde lambda étant relié aux deux ouvertures (3).
  8. Système d'échappement selon la revendication 7, dans lequel le branchement (5) pour la sonde lambda est disposé et configuré symétriquement aux deux ouvertures (3) pour les tuyaux collecteurs (9).
  9. Système d'échappement selon la revendication 7 ou 8, dans lequel les deux liaisons entre les ouvertures (3, 7) pour les tuyaux collecteurs (9) et le branchement (5) pour la sonde lambda présentent la même résistance à l'écoulement.
  10. Système d'échappement selon une des revendications précédentes, dans lequel la partie supérieure (1) est assemblée par soudage à la plaque d'étanchéité (2), notamment le long du bord.
  11. Système d'échappement selon une des revendications 1 à 9, dans lequel la partie supérieure (1) est assemblée par brasage à la plaque d'étanchéité (2).
  12. Système d'échappement selon une des revendications précédentes, dans lequel la partie supérieure (1) s'applique au moins partiellement à plat contre la plaque d'étanchéité (2), notamment dans la région de bord de cette dernière.
EP95118038A 1994-11-30 1995-11-16 Système d'échappement Expired - Lifetime EP0715064B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4442573 1994-11-30
DE4442573A DE4442573A1 (de) 1994-11-30 1994-11-30 Flanschverbindung

Publications (2)

Publication Number Publication Date
EP0715064A1 EP0715064A1 (fr) 1996-06-05
EP0715064B1 true EP0715064B1 (fr) 2000-03-22

Family

ID=6534517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118038A Expired - Lifetime EP0715064B1 (fr) 1994-11-30 1995-11-16 Système d'échappement

Country Status (3)

Country Link
EP (1) EP0715064B1 (fr)
AT (1) ATE191062T1 (fr)
DE (2) DE4442573A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357081A1 (de) * 2003-12-06 2005-07-07 Audi Ag Abgasanlage für eine Brennkraftmaschine eines Fahrzeuges, insbesondere eines Kraftfahrzeuges
JP4257528B2 (ja) 2004-07-05 2009-04-22 三菱自動車工業株式会社 多気筒内燃機関
FR2907161B1 (fr) * 2006-10-16 2008-11-14 Renault Sas Collecteur d'echappement d'un moteur
DE102010007877A1 (de) * 2010-02-13 2011-08-18 Bayerische Motoren Werke Aktiengesellschaft, 80809 Abgaskrümmer für eine Verbrennungskraftmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725944A1 (de) * 1977-06-08 1978-12-21 Daimler Benz Ag Abgasreinigungsanlage
JPS60150417A (ja) * 1984-01-17 1985-08-08 Yamaha Motor Co Ltd 自動二輪車等におけるエンジンの排気管
JPH0615817B2 (ja) * 1985-05-14 1994-03-02 本田技研工業株式会社 多気筒内燃エンジンの排気マニホ−ルド
JPH055215Y2 (fr) * 1986-10-28 1993-02-10
DE4313091A1 (de) 1993-04-22 1994-10-27 Bischoff Erhardt Gmbh Co Kg Flansch zur Befestigung von Rohren
DE4315086A1 (de) * 1993-05-06 1994-11-10 Roth Technik Gmbh Flansch für Rohrkrümmer an Verbrennungsmotoren

Also Published As

Publication number Publication date
ATE191062T1 (de) 2000-04-15
DE4442573A1 (de) 1996-06-05
EP0715064A1 (fr) 1996-06-05
DE59508046D1 (de) 2000-04-27

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