EP1019618A1 - Bride de collecteur d'echappement pour moteur a combustion interne - Google Patents

Bride de collecteur d'echappement pour moteur a combustion interne

Info

Publication number
EP1019618A1
EP1019618A1 EP98955335A EP98955335A EP1019618A1 EP 1019618 A1 EP1019618 A1 EP 1019618A1 EP 98955335 A EP98955335 A EP 98955335A EP 98955335 A EP98955335 A EP 98955335A EP 1019618 A1 EP1019618 A1 EP 1019618A1
Authority
EP
European Patent Office
Prior art keywords
base part
exhaust manifold
cover element
manifold flange
flange according
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Withdrawn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
EP98955335A
Other languages
German (de)
English (en)
Inventor
Wolfgang Kleiner
Hans A. Härle
Albrecht Geiger
Helmut Held
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19827276A external-priority patent/DE19827276A1/de
Application filed by Individual filed Critical Individual
Publication of EP1019618A1 publication Critical patent/EP1019618A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/34—Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
    • F02M26/44—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which a main EGR passage is branched into multiple passages
    • 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 invention relates to an exhaust manifold flange for an internal combustion engine according to the preamble of claim 1.
  • the secondary air and / or the recirculated exhaust gas is preferably fed in via air guidance systems which are external components of forged and cast manifold flanges.
  • air guidance systems which are external components of forged and cast manifold flanges.
  • connection channels required for this from an air inlet system to the exhaust manifold flange and thus to the combustion chamber are associated with a large manufacturing outlay and thus high manufacturing costs.
  • the layers in question (individual flanges) are regularly manufactured as stamped flanges and are then congruently placed on top of one another and soldered using holding devices.
  • the copper solder required for the hard soldering of the individual layers is introduced in the form of solder paste into recesses (solder deposits) provided for this purpose in the individual flanges overlying the lowest layer.
  • solder deposits solder deposits
  • the individual partial flanges must also be welded to one another at several points before the soldering or heat treatment process.
  • the manufacturing process can be summarized as follows:
  • Embodiments produced in this way are associated with an enormous use of materials and energy. This leads to high environmental and resource pollution.
  • the high weight contributes to an unfavorable fuel consumption balance in motor vehicles.
  • the disadvantages of layer flange designs are even more diverse and therefore to be considered in more detail.
  • the invention is based on the object of providing an exhaust manifold flange which can be produced more cost-effectively, with comparatively less material and energy expenditure and thus in a more resource-efficient manner.
  • a weight saving is to be achieved with which a reduction in fuel consumption is achieved
  • the invention is based on an exhaust manifold flange for an internal combustion engine, which has a base part with recesses for exhaust ports and openings Cylinder accesses in the engine block of the engine as well as supply means for secondary air and / or recirculated exhaust gas comprises, the supply means being connected to the openings to the cylinder accesses.
  • the feed means comprise a channel arranged directly on the base part, for the formation of which at least one cover element is provided, which extends only over a partial area of the base part.
  • holes are provided for fastening the exhaust manifold flange and / or for securely connecting the openings in the base part to the cylinder accesses on the engine block in at least one cover element and in the base part, which can be penetrated by a screw connection.
  • Exhaust gas recirculation duct on the engine block is made by the same screw connections. Furthermore, if the cover element, as described further below, is soldered to the base part, this prevents the solder joints from being thrown open or bursting, especially at high engine temperatures.
  • a sleeve element is fitted in at least one bore arrangement for the attachment of a screw connection in such a way that the sleeve after a predetermined deformation of the at least one cover element and / or the base part by the forces of the screw connection or connections absorbs further deformation forces on at least the cover element.
  • the sleeve element is designed such that it is supported between a contact surface of the screw connection and the engine block in order to absorb forces that would cause undesirable deformations.
  • the cover element for forming the channel can be made of comparatively thin-walled elastic material without running the risk that the cover element will give way to the screw connections until the entire manifold flange is detached, in particular in the area of the connection openings to the engine block. This would cause the engine to malfunction.
  • the use of a thin-walled cover element saves manufacturing costs and reduces the weight of the exhaust manifold flange, which ultimately reduces fuel consumption.
  • the elements for channel formation are soldered to the base part or similarly connected.
  • soldering can be achieved. Because the sleeve elements can be used before the soldering as position aids for the exact arrangement of the cover element on the base part by inserting them through the holes in the cover element and base part and if necessary. be jammed.
  • the sleeve can advantageously be fixed by means of an interference fit. This is a stapling of the cover element on the base part z. B. unnecessary by welding spots before soldering.
  • the base part In order to reliably avoid detachment of the manifold flange at high temperatures of the internal combustion engine, it is furthermore advantageous if means for stiffening the base part are provided on the base part.
  • the means for stiffening comprise a flange that extends at least partially over the outer contour of the base part.
  • the base part is made from a steel sheet.
  • the cover element is shell-shaped to form the channel and rests on the base part.
  • the upturned areas on the cover element to form the shell lie against the flanging of the base part by suitable dimensions of the cover element, as if, as it were, two shells with the open side fit exactly into one another become. In this case, too, a previous fixing of the cover element by the precise insertion before z. B. a soldering process is not required.
  • the adjacent flanges or upstands offer good flow paths for the solder.
  • the channel cross-section can also be determined via the height of the upstand on the cover element or the flanging on the base part.
  • the cover element is a cover plate which is congruently arranged to form the channel on an intermediate plate lying on the base part with cutouts for the channel guides.
  • the cover element has an L or U profile shape.
  • the cover element comprises a square tube which is placed on the base part.
  • the cover element is formed from a part of the base part by bending it into a box profile. In this way, the base element with secondary and / or exhaust gas recirculation channel can be made from a single sheet.
  • the exhaust ports are soldered into the base part. This avoids an advantage of the flange and possibly cracking on the flange, which occurs during an otherwise usual welding process.
  • Fig. 1 shows a first invention
  • FIG. 1A-F sectional views of the embodiment of FIG. 1 according to the section lines A-A to F-F shown in FIG. 1,
  • Fig. 2 is a side view of the 1 according to the exemplary embodiment
  • Fig. 3 shows a second invention
  • 3A is a sectional view of the
  • Fig. 4 shows a third invention
  • This exemplary embodiment comprises a base part 1 with four receiving openings 2 for each exhaust pipe 14 (see FIG. 1A) corresponding to the number of cylinders of an engine. Furthermore, this exhaust manifold flange has an intermediate plate 3 running along the manifold receiving openings, which has a recess 4 (shown in broken lines in FIG. 1) and, together with a congruent cover plate 5, forms a secondary air and / or exhaust gas recirculation channel arranged directly on the base part 1.
  • the intermediate plate 3 is with the base part 1 and the cover plate 5 z.
  • the base part 1 is fastened together with the intermediate plate 3 and the cover plate 5 via screw connections 6 (only shown in the sectional view of FIG. 1A) to an engine block (not shown), for example.
  • holes 7, 8 are provided in the base part 1 and in the cover plate 5 (see FIG. 1A).
  • 2 further bores 13 are positioned on the base part 1 above each receiving opening.
  • the base part 1 has openings 9 which are encompassed by the recess 4 in the cylinder plate 3.
  • the cover plate 5 has a feed connector 10 for feeding secondary air and / or recirculated exhaust gas into the recess 4 of the channel
  • the flanges give the base part a very high stiffness, in particular bending stiffness, so that with a given maximum bending stiffness, the entire flange made of very thin steel sheet, ie. H. can be manufactured with very little material.
  • FIG. 3 and 3A show a second exemplary embodiment of an exhaust manifold flange according to the invention, in which a base part 20 which is similar in comparison to the first exemplary embodiment is used.
  • the base part also comprises four receiving openings 21 for a corresponding number of exhaust ports.
  • a cover element 22 is used, which is shaped like a bowl (see section-wise representation in FIG. 3 and FIG. 3A).
  • the shell-shaped cover element 22 sits directly on the base part 20, the channel volume formed thereby being connected to openings 23 which provide access to corresponding cylinder openings on an engine block.
  • screws are provided on the base part 20 and in the cover element 22 holes 24, 25 or above the receiving openings 21 holes 26.
  • a sleeve 27 is inserted into the congruent bores 24 and 25, as can be seen in FIG. 3A.
  • the sleeve 27 has a collar 28 which rests on the cover element 22.
  • the sleeve 27 according to the invention has several advantages. First, it serves as a positioning aid for the cover element 22 in front of a z. B. Brazing process. For this purpose, the sleeve 27 is inserted through the bore 24 in the cover element 22 and into the bore 25 of the base part.
  • the cover element 22 is exactly positioned and fixed with respect to the base part 20, so that it is not necessary, for example, to attach welding tack points before a brazing process.
  • the brazing process is carried out so that the sleeve 27 is still movable in the bore 25 of the base part 20.
  • FIG. 3A shows the relaxed state in which the end of the sleeve 27 located in the bore 25 is at a slight distance from the contact surface 31 of the base part 20, which rests on an engine block in the installed state "x" owns. Only in this area is deformation of the cover element 22 permitted. This measure thus prevents a z.
  • the size of the contact pressure on the cover element 22 and thus the base part 20 can be adjusted so that there is no permanent deformation of the cover element.
  • an exhaust nozzle 32 inserted into the receiving openings 21 is shown in the left half.
  • This can e.g. B. soldered instead of a welding process to avoid cracking in the high thermal load during welding in the bottle.
  • this has a flange 33 with the exception of the peripheral region on which the cover element 22 runs.
  • FIG. 4 A third exemplary embodiment according to the invention is shown in FIG. 4 and the associated cuts. 4A-F shown along the section lines A-A to F-F.
  • the exemplary embodiment comprises a base part 40 which is identical to the first exemplary embodiment, with the only difference that the outer flange 41 on the base part 40 is fully circumferential. Comparable construction elements are therefore provided with the same reference symbols.
  • a shell-shaped cover element 42 is inserted into the base part 40 in such a way that the raised areas of the cover element 42 on the circumferential flange 41 of the base part 40 with the exception of one Section in the area of the two outer receiving openings 2 for exhaust pipe 43 (only indicated in Fig. 4A).
  • web elements 44 are provided which take over this task.
  • the cover element is soldered to the base part along the edge of the cover element.
  • the base part 40 and the cover element 42 are designed in such a way that they can be inserted into one another in a simple manner in a positionally stable manner with the open sides pointing towards one another and possibly pressed together.
  • larger channel cross sections can also be achieved without problems by varying the height of the flange 41 of the base part 40 and / or the edging of the cover element 42.
  • bores 13, 45, 46 are provided in the base part 40 and possibly in the cover element 42 (see in particular FIG. 4A, in which a screw connection 47 is indicated).
  • the work steps 1 - 3 mentioned at the beginning in the prior art are omitted due to the low use of materials resources are conserved and the weight saving of over 50% compared to conventional embodiments can save fuel in motor vehicles. This in turn leads to environmental protection.
  • the exemplary embodiments according to the invention moreover, there is no interaction between the molten solder and the welded joints or problematic solder diffusion. Overall, the manufacturing costs are also greatly reduced by using a much lower amount of solder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Silencers (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

L'invention concerne une bride de collecteur d'échappement pour moteur à combustion interne, qui comporte une partie de base présentant des évidements (21) destinés à des tuyaux d'échappement (32) et des ouvertures (23) destinées aux entrées de cylindre du bloc moteur du moteur à combustion interne, ainsi que des moyens d'amenée pour l'air secondaire et/ou les gaz d'échappement recyclés, lesdits moyens d'amenée étant en liaison avec les ouvertures destinées aux entrées de cylindre. Selon l'invention, ces moyens d'amenée comportent un canal disposé directement sur la partie de base, pour lequel il est prévu au moins un élément de couverture (22) qui s'étend simplement sur une zone partielle de la partie de base (20).
EP98955335A 1997-10-02 1998-09-15 Bride de collecteur d'echappement pour moteur a combustion interne Withdrawn EP1019618A1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19743803 1997-10-02
DE19743803 1997-10-02
DE19744982 1997-10-13
DE19744982 1997-10-13
DE19827276 1998-06-19
DE19827276A DE19827276A1 (de) 1997-10-02 1998-06-19 Abgaskrümmerflansch für eine Verbrennungskraftmaschine
PCT/DE1998/002737 WO1999018336A1 (fr) 1997-10-02 1998-09-15 Bride de collecteur d'echappement pour moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP1019618A1 true EP1019618A1 (fr) 2000-07-19

Family

ID=27217795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98955335A Withdrawn EP1019618A1 (fr) 1997-10-02 1998-09-15 Bride de collecteur d'echappement pour moteur a combustion interne

Country Status (4)

Country Link
EP (1) EP1019618A1 (fr)
AU (1) AU1223399A (fr)
DE (1) DE19881446D2 (fr)
WO (1) WO1999018336A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655382B1 (fr) * 1989-12-04 1992-04-17 Peugeot Dispositif d'introduction de gaz additionnel, tel que de l'air, dans un moteur a combustion interne et moteur equipe d'un tel dispositif.
DE4313091A1 (de) * 1993-04-22 1994-10-27 Bischoff Erhardt Gmbh Co Kg Flansch zur Befestigung von Rohren
US5572867A (en) * 1993-11-12 1996-11-12 Benteler Industries, Inc. Exhaust air rail manifold
DE29522006U1 (de) * 1995-07-04 1999-02-18 Benteler Ag, 33104 Paderborn Vorrichtung zur Ankopplung von Abgasrohren an einen Motorblock

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9918336A1 *

Also Published As

Publication number Publication date
DE19881446D2 (de) 2001-01-04
AU1223399A (en) 1999-04-27
WO1999018336A1 (fr) 1999-04-15

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