WO1997004221A1 - Collecteur d'echappement - Google Patents

Collecteur d'echappement Download PDF

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Publication number
WO1997004221A1
WO1997004221A1 PCT/EP1996/003123 EP9603123W WO9704221A1 WO 1997004221 A1 WO1997004221 A1 WO 1997004221A1 EP 9603123 W EP9603123 W EP 9603123W WO 9704221 A1 WO9704221 A1 WO 9704221A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust pipes
exhaust
exhaust pipe
section
pipes
Prior art date
Application number
PCT/EP1996/003123
Other languages
German (de)
English (en)
Inventor
Klaus Sitzler
Manfred Hein
Jürgen Rickertsen
Alfred Koch
Original Assignee
Dr. Ing. H.C.F. Porsche Aktiengesellschaft
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 Dr. Ing. H.C.F. Porsche Aktiengesellschaft filed Critical Dr. Ing. H.C.F. Porsche Aktiengesellschaft
Publication of WO1997004221A1 publication Critical patent/WO1997004221A1/fr

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
    • 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

Definitions

  • the invention relates to an exhaust pipe elbow for at least two exhaust pipes connected to one of the cylinders of an internal combustion engine, according to the preamble of the main claim.
  • Such an exhaust pipe elbow is described for example in DE 34 31 759 C2.
  • Two exhaust pipes connected directly or indirectly to the cylinders of the internal combustion engine are connected to a further collecting pipe via a collector housing that surrounds them on the outside.
  • the two exhaust pipes run almost parallel and spaced apart in the inlet area.
  • it surrounds the collector housing in shell construction, which surrounds it, with a sealing seam with a cross-section in the form of glasses.
  • Such a collector housing or the entry point of the exhaust pipes into this collector housing is complex to manufacture and requires very high technical outlay for establishing a tight connection between the exhaust pipes and the collector housing.
  • the gore-shaped area between the two incoming exhaust pipes can only be sealed with considerable effort.
  • Another exhaust pipe elbow is known from EP 0 192 995 B1, in which, for example, three exhaust pipes are connected in a funnel-shaped collecting housing which is connected at the end to a connecting flange for a further exhaust pipe.
  • This funnel is designed to receive the exhaust pipes approximately cloverleaf end, so that these pipes can be inserted bundled.
  • This design is very complex to create.
  • the sealing of the entering pipes, especially in the gusset area between the pipes is only included. very great effort to manufacture.
  • the invention is based on the object of developing an exhaust pipe elbow for at least two exhaust pipes connected to one of the cylinders of an internal combustion engine in such a way that production is inexpensive and
  • Such an embodiment of an exhaust pipe elbow is particularly well suited for bringing together at least three exhaust pipes, which are advantageously arranged in parallel for this purpose. This also results in an easy-to-manufacture and sealable connection area, with the collecting housing at the same time being of correspondingly simple construction.
  • the angle between the flattened areas of an exhaust pipe is at least approximately 360 ° / number of exhaust pipes.
  • asymmetrical training is also possible. If a round cross section is to be formed in such a configuration of the merging, point the curved outer regions of the exhaust pipes have at least approximately the same radius of curvature.
  • the exhaust pipes in the entry area into the collecting housing are designed so that their entry lengths are different, there are further advantages for the manufacture and design of the exhaust system.
  • the different inlet lengths of the exhaust pipes make it easier to produce a welded connection between the two adjacent exhaust pipes.
  • the requirement for the same exhaust pipe lengths is easier to meet, so that greater freedom for the shape and the course of the individual exhaust pipes is given in the area between the cylinder connection and the collecting housing.
  • FIG. 1 shows a view of an exhaust pipe elbow only partially shown in the area of the entry of the exhaust pipes into the collecting housing, partly in section
  • FIG. 2 shows a longitudinal section through the entry area of the exhaust pipes into the collecting housing
  • FIG. 3 shows a cross section through the exhaust pipes in the entry area into the collecting housing along the line M-III according to FIG. 2.
  • three exhaust pipes 1 to 3 each connected to a cylinder, not shown, of an internal combustion engine known per se are combined in a double-shell collecting housing 4.
  • the collecting housing is provided at one end with a connecting flange 5, to which the flange 6 of a further ' collecting pipe 7 is connected.
  • the three exhaust pipes have a circular cross-section with an outer diameter D over most of their length between the respectively assigned cylinder and the collecting housing 4, which in this exemplary embodiment is the same for all three exhaust pipes 1 to 3, but can also be easily different.
  • the three exhaust pipes 1 to 3 are guided so that their end sections 7 to 9 opening into the collecting housing 4 run parallel.
  • the three exhaust pipes or their three end sections are arranged such that they lie side by side in one plane.
  • These end portions 7 to 9 of the exhaust pipes 1 to 3 by a suitable molding process, such as by expanding, in their adjacent areas flattened.
  • the end sections 7 and 9 each have an outer region 10... 11, which largely has a cross section in the form of a circular section.
  • the outer sections 10 and 11 each have a semicircular cross section, the outer radius R of which corresponds approximately to half the outer diameter D of the respective exhaust pipes.
  • the inner sections 12, 13 facing the respective adjacent end section 8 are expanded by a suitable molding process in such a way that they have an approximately rectangular cross section. This results in flattened regions 14, 15 which run approximately parallel and face the end section 8 of the exhaust pipe 2.
  • the inner sections 12, 13 are widened such that the width B of the flattened areas 14, 15 corresponds approximately to the outer diameter D of the exhaust pipes 1 and 3, respectively
  • De r end section 8 of the central exhaust duct 2 is also expanded by a suitable molding process, wherein the circular cross-section is transferred to a recnteckigen cross section.
  • Two opposite, parallel flattened areas 16, 17 are formed, which run parallel to the opposite flattened areas 14, 15.
  • the dimensions of the flattened areas 16, 17 of the end section 8 correspond to the width B of the flattened areas 14, 15 of the end sections 7 and 8, respectively.
  • the three parallel end sections 7 to 9 lie directly against one another.
  • Their entry area into the collecting housing 4 has an approximately oval cross-section overall, the area between the two curved outer sections 10 and 11 of the exhaust pipes 1 and 3 running almost rectilinearly.
  • the inlet lengths I, I 2 and I 3 in the collecting housing 4 of the individual exhaust pipes 1 to 3 are different. This results in a length offset between the end sections 7 to 9 opening into the collecting housing 4.
  • the respectively adjoining end sections 7 and 8 or 8 and 9 are connected to one another by a weld seam 18 or 19.
  • This weld seam 18 or 19 o runs in each case on the end face of the shorter of the two adjoining end sections, specifically at the flattened region 14 to 17.
  • This weld seam is particularly easy to produce due to the difference in length of the two adjoining end sections.
  • the collecting housing 4 consists - as already mentioned above - of two
  • Housing halves 20, 21 which comprise the end sections 7 to 9 and are connected to them and to one another.
  • the two shell-shaped housing halves 20 and 21 have an overlapping area 22, at which they are welded to one another, and two opposite edge sections 23, which are connected to one another and are bent approximately at right angles, via which they are connected to one another.
  • the combination of the welded edge sections 23 on one side and the overlapping, welded area 22 on the opposite side results in a relatively simple production on the one hand and a good compensation of tolerances of the two housing halves or the connection area to the three exhaust pipes 1 to 3 5 on the other hand .
  • the collecting housing 4 and the three end sections 7 to 9 are connected to one another in the region of this open end face 24 by a circumferential weld seam 25.
  • this design of the exhaust pipes in the entry area into the collector housing is based on the use of For example, two or four exhaust pipes to be brought together can be transferred. When two exhaust pipes are brought together, the flattened regions of the two end sections are then combined directly. When four exhaust pipes are brought together, two exhaust pipes are advantageously formed analogously to the two outer exhaust pipes of the exemplary embodiment shown and described. The two other exhaust pipes are rectangularly shaped analogously to the middle end section 8 of the exemplary embodiment shown above. The four exhaust pipes can be arranged on one level analogous to the embodiment shown above.
  • the two middle end sections one above the other, in which case the width of the flattened area of one of the two end areas arranged one above the other corresponds to half the width of the flattened area of one of the outer end sections. It is also possible to bring the exhaust pipes together so that their overall cross-section is round or oval.
  • the flattened areas of the respective exhaust pipes are arranged in a corresponding angular position to one another, so that each exhaust pipe has the cross-sectional shape of a circular or oval section.

Landscapes

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

Abstract

L'invention concerne un collecteur d'échappement pour au moins deux tuyaux d'échappement (1, 2, 3) reliés chacun à un des cylindres d'un moteur à combustion interne, qui comprend un carter (4) dans lequel lesdits tuyaux d'échappement (1, 2, 3) entrent et sont reliés à un tuyau collecteur (7) acheminant les gaz d'échappement plus loin. Les tuyaux d'échappement (1, 2, 3) qui débouchent dans le carter (4) du collecteur comportent des zones aplaties (14, 15, 16, 17) adjacentes. Les tuyaux d'échappement (1, 2, 3) présentent de ce fait, dans la zone d'entrée dans le carter (4) du collecteur, une section approximativement sans coin, qui permet de réaliser un assemblage et une étanchéification simples.
PCT/EP1996/003123 1995-07-18 1996-07-16 Collecteur d'echappement WO1997004221A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995126084 DE19526084A1 (de) 1995-07-18 1995-07-18 Abgasrohrkrümmer
DE19526084.8 1995-07-18

Publications (1)

Publication Number Publication Date
WO1997004221A1 true WO1997004221A1 (fr) 1997-02-06

Family

ID=7767081

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003123 WO1997004221A1 (fr) 1995-07-18 1996-07-16 Collecteur d'echappement

Country Status (2)

Country Link
DE (1) DE19526084A1 (fr)
WO (1) WO1997004221A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315520A (en) * 1996-07-17 1998-02-04 Daimler Benz Ag I.c. engine exhaust manifold
WO1998054446A1 (fr) 1997-05-30 1998-12-03 Zeuna-Stärker GmbH & Co. KG Dispositif pour la reunion de tuyaux

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142979C1 (de) 2001-09-01 2003-05-28 Porsche Ag Abgaskrümmer einer Abgasanlage für eine Brennkraftmaschine
DE10144795A1 (de) * 2001-09-12 2003-04-03 Daimler Chrysler Ag Abgaskrümmer und Verfahren zur Herstellung desselben
DE10219269A1 (de) * 2002-04-30 2003-11-20 Zeuna Staerker Kg Zweischalige, luftspaltisolierte Abgaszusammenführung und Verfahren zu deren Herstellung
DE102009030937A1 (de) * 2009-06-24 2011-01-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Abgaskrümmer
DE102016106893A1 (de) * 2016-04-14 2017-10-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Abgaskrümmer für eine Brennkraftmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470690A (en) * 1967-10-04 1969-10-07 Marion L Thompson Exhaust header
US4373329A (en) * 1980-06-30 1983-02-15 Tenneco Inc. Tubular exhaust manifold
DE3538005A1 (de) * 1985-10-25 1987-04-30 Porsche Ag Abdichtung an abgasrohren
JPS6473119A (en) * 1987-09-14 1989-03-17 Yamaha Motor Co Ltd Exhaust control device for motorcycle
JPH01138311A (ja) * 1987-11-24 1989-05-31 Mazda Motor Corp エンジンの排気通路構造
WO1992003639A1 (fr) * 1990-08-13 1992-03-05 Flowmaster, Inc. Ensemble de collecteur pour moteur a combustion interne et procede
JPH051534A (ja) * 1991-02-18 1993-01-08 Yutaka Giken Co Ltd 排気管
DE9314371U1 (de) * 1993-09-23 1995-01-26 Zeuna-Stärker GmbH & Co KG, 86154 Augsburg Rohrzusammenführung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847819A (en) * 1952-11-07 1958-08-19 Gen Motors Corp Reversible exhaust manifold system
US2841951A (en) * 1954-11-05 1958-07-08 Richard T Whitcomb Apparatus for reducing exhaust gas pressure in internal combustion engines
FR2612252B1 (fr) * 1987-03-09 1992-04-03 Peugeot Dispositif de raccordement de conduits d'echappement et moteur a combustion interne equipe de ce dispositif
JP2687549B2 (ja) * 1989-03-01 1997-12-08 スズキ株式会社 四サイクル四気筒エンジンの排気装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470690A (en) * 1967-10-04 1969-10-07 Marion L Thompson Exhaust header
US4373329A (en) * 1980-06-30 1983-02-15 Tenneco Inc. Tubular exhaust manifold
DE3538005A1 (de) * 1985-10-25 1987-04-30 Porsche Ag Abdichtung an abgasrohren
JPS6473119A (en) * 1987-09-14 1989-03-17 Yamaha Motor Co Ltd Exhaust control device for motorcycle
JPH01138311A (ja) * 1987-11-24 1989-05-31 Mazda Motor Corp エンジンの排気通路構造
WO1992003639A1 (fr) * 1990-08-13 1992-03-05 Flowmaster, Inc. Ensemble de collecteur pour moteur a combustion interne et procede
JPH051534A (ja) * 1991-02-18 1993-01-08 Yutaka Giken Co Ltd 排気管
DE9314371U1 (de) * 1993-09-23 1995-01-26 Zeuna-Stärker GmbH & Co KG, 86154 Augsburg Rohrzusammenführung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 274 (M - 841) 23 June 1989 (1989-06-23) *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 392 (M - 865)<3740> 30 August 1989 (1989-08-30) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 263 (M - 1415) 24 May 1993 (1993-05-24) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315520A (en) * 1996-07-17 1998-02-04 Daimler Benz Ag I.c. engine exhaust manifold
GB2315520B (en) * 1996-07-17 1998-11-11 Daimler Benz Ag Exhaust manifold for guiding exhaust gas out of an internal combustion engine
WO1998054446A1 (fr) 1997-05-30 1998-12-03 Zeuna-Stärker GmbH & Co. KG Dispositif pour la reunion de tuyaux

Also Published As

Publication number Publication date
DE19526084A1 (de) 1997-01-23

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