EP1083307B1 - Abgassystem für mehrzylindrige Verbrennungsmotoren umfassend ein Abgassammelrohr aus Blech und einen Katalysator - Google Patents
Abgassystem für mehrzylindrige Verbrennungsmotoren umfassend ein Abgassammelrohr aus Blech und einen Katalysator Download PDFInfo
- Publication number
- EP1083307B1 EP1083307B1 EP00114082A EP00114082A EP1083307B1 EP 1083307 B1 EP1083307 B1 EP 1083307B1 EP 00114082 A EP00114082 A EP 00114082A EP 00114082 A EP00114082 A EP 00114082A EP 1083307 B1 EP1083307 B1 EP 1083307B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- exhaust
- collecting space
- exhaust system
- catalytic converter
- 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
Links
Images
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
- F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
- F01N13/1877—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal the channels or tubes thereof being made integrally with the housing
-
- 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
- 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
- F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
-
- 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
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
-
- 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
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
-
- 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
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
Definitions
- the invention relates to an exhaust manifold made of sheet metal for multi-cylinder Internal combustion engines with those mentioned in the preamble of the main claim Features.
- EP 0 818 616 A1 has previously disclosed an exhaust manifold for internal combustion engines, in which an exhaust pipe is led individually from the cylinders of the engine to a collecting space and is curved in the direction of the crankcase.
- a lower shell embossed as the first shell and an upper shell made of sheet metal designed as a second shell form both exhaust pipes and a collecting space in which the exhaust pipes open.
- the spatially curved course of the connecting plane of the upper and lower shell is disadvantageous.
- the document DE 31 07 897 A1 discloses an exhaust manifold for multi-cylinder internal combustion engines, which is designed as a cast part and has exhaust pipes which are led individually from the cylinders to an expanding manifold. The flow is redirected in the exhaust pipes and directed into the collecting area. When looking at the exhaust pipes, the collecting space has a circular cross section. Two mutually opposite exhaust pipes open at an obtuse angle and two further adjacent exhaust pipes at an acute angle to each other. Some of the flow from the exhaust pipes reaches the collecting space in the center or tangentially.
- the object of the invention to provide a generic exhaust manifold made of sheet metal shells with a collecting space which promotes mixing of the exhaust gases and ensures a uniform temperature and optimal mixing for the exhaust gases flowing to the catalyst.
- a simple connection of the metal shells should be possible.
- the connecting plane of the first shell which is preferably designed as an upper shell
- the second shell which is preferably embodied as a lower shell
- the exhaust manifold essentially consists of a first shell, upper shell 1 (Fig. 1a) and a second shell, lower shell 2 (Fig. 1b). Both consist of Sheet metal and are through at their essentially flat connection level Welds joined together.
- Exhaust pipes 3 to 6 (FIGS. 1a, 1b) - each represented as half pipes 3a, 3b to 6a, 6b - lead from the engine cylinders to a collecting space 7, which consists of parts 7a, 7b in the upper shell 1 and the lower shell 2 is formed.
- the collecting space 7 When looking into the respectively hollow-embossed side of the upper shell 1 (FIG. 2) and lower shell 2 (FIG. 1b), the collecting space 7 has a circular or oval cross section.
- the exhaust pipes 3a, 3b, 5a, 5b and 4a, 4b, 6a, 6b open into the collecting space 7 over a wide area of its circumference, so that a rotating flow in the collecting space 7 is preferably established.
- the exhaust gas flows from the exhaust pipes 3 to 6 are mixed in the collecting space 7 and diverted approximately at a right angle.
- a receiving opening 8 for the exhaust gas probe 9 is arranged in the upper shell 1 in part 7a of the collecting space 7. Their position is chosen so that a uniform flow against the exhaust gas probe 9 is guaranteed by the exhaust gases from all exhaust pipes 3 to 6.
- a catalyst 13 is detachably or fixedly arranged on the mounting flange 12 of the outflow opening 11, see FIG. 3.
- the catalyst 13 is attached to the side of the engine, with its axis running in a direction approximately parallel to the cylinder block.
- Fig. 3 the exhaust manifold with the welded half-shells - upper shell 1 and lower shell 2 - and the exhaust pipes 3, 4, 5, 6 formed therewith, the collecting space 7 and the connected catalyst 13 is shown. Furthermore, the exhaust gas probe 9 reaching into the collecting space 7 can be seen.
- Fig. 4 shows a section through the area of the transition from the collecting space 7 of the Exhaust manifold to the catalyst 13.
- the part 7b of the collecting space 7 in the lower shell 2 advantageously has a larger one Volume than the part 7a in the upper shell 1. This is advantageous achieved that there is a clear flow and rotation direction of the exhaust gases their entry into the collecting space from the relatively small volume of the upper shell in Direction to the larger lower shell volume.
- the cross section of the The collecting space 7 in its part 7b decreases in the direction of the outflow opening 11 down to about their diameter. The diameter of the outflow opening is 11 executed much smaller than that of the catalyst 13, such that a Cross-sectional jump.
- This version of the transition from the collecting space 7 of the exhaust manifold to Catalyst 13 ensures that after the entry of the exhaust gases from the exhaust pipes 3 to 6 in the collecting space 7, specifically in the volume of its part 7b in the lower shell 2 to the catalytic converter 13 forms a rotating exhaust gas flow.
- the advantage of the invention is the good mixing of the individual exhaust gas flows in the Collection room 7 and the uniform temperature achieved for the Catalyst 13 flowing exhaust gases.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Description
Nachteilig ist der räumlich gebogene Verlauf der Verbindungsebene von Ober- und Unterschale.
Bereits in den Abgasrohren wird die Strömung umgelenkt und in den Sammelraum geleitet. Bei Sicht auf die Abgasrohre weist der Sammelraum einen kreisförmigen Querschnitt auf. Zwei zueinander gegenüber liegende Abgasrohre münden in einem stumpfen Winkel und zwei weitere nebeneinander liegende Abgasrohre in einem spitzen Winkel zueinander. Von den Abgasrohren gelangt die Strömung teilweise mittig bzw. tangential in den Sammelraum.
Die erfindungsgemäße Lösung der Aufgabe erfolgt durch die im kennzeichnenden Teil der Patentansprüche genannten Merkmale. Erfindungsgemäß verläuft die Verbindungsebene der vorzugsweise als Oberschale augebildeten ersten Schale und der vorzugsweise als Unterschale ausgebildeten zweiten Schale im wesentlichen plan, dabei bilden beide Schalen einen Sammelraum, in dem die Abgase der einzelnen Zylinder intensiv vermischt und zum Katalysator geleitet werden. Hierdurch stellt sich eine bezüglich der Temperaturverteilung gleichmäßige Beaufschlagung des Katalysators ein. Exotherme Nachreaktionen finden im Sammelraum statt und halten so die Katalysatoroberfläche frei von einer möglichen, örtlichen Überhitzung.
Es zeigt:
- Fig. 1a und 1b
- die Ober- und Unterschale,
- Fig. 2
- die Unterseite der Oberschale,
- Fig. 3
- das Abgassammelrohr mit Katalysator,
- Fig. 4
- den Bereich des Überganges vom Sammelraum des Abgassammelrohres zum Katalysator.
Bei Sicht in die jeweils hohlgeprägte Seite der Oberschale 1 (Fig. 2) und Unterschale 2 (Fig. 1b) weist der Sammelraum 7 einen kreisförmigen oder ovalen Querschnitt auf. Die Abgasrohre 3a, 3b, 5a, 5b bzw. 4a, 4b, 6a, 6b münden im Sammelraum 7 über einen weiten Bereich dessen Umfanges, so daß sich vorzugsweise eine rotierende Strömung im Sammelraum 7 einstellt. Die Abgasströme aus den Abgasrohren 3 bis 6 werden in dem Sammelraum 7 vermischt und etwa im rechten Winkel umgelenkt.
innerhalb der Oberschale 1 ist im Teil 7a des Sammelraumes 7 eine Aufnahmeöffnung 8 für die Abgassonde 9 angeordnet. Ihre Lage wird so gewählt, daß ein gleichmäßiges Anströmen der Abgassonde 9 von den Abgasen aus allen Abgasrohren 3 bis 6 gewährleistet ist.
Von der hohlgeprägten Seite der Unterschale 2 ausgehend ist eine aus dem Teil 7b des Sammelraumes 7 heraus führende, vorzugsweise zentrische Abströmöffnung 11 vorhanden, die von einem Befestigungsflansch 12 der Unterschale 2 umgeben ist. Am Befestigungsflansch 12 der Abströmöffnung 11 ist ein Katalysator 13 lösbar oder fest angeordnet, siehe Fig. 3. Der Katalysator 13 ist seitlich am Motor, mit seiner Achse in einer Richtung etwa parallel zum Zylinderblock verlaufend, befestigt.
In Fig. 3 ist das Abgassammelrohr mit den verschweißten Halbschalen - Oberschale 1 und Unterschale 2 - und den damit gebildeten Abgasrohren 3, 4, 5, 6, dem Sammelraum 7 sowie dem angeschlossenen Katalysator 13 dargestellt. Weiterhin ist die in den Sammelraum 7 hinein reichende Abgassonde 9 erkennbar.
Claims (7)
- Abgassystem für mehrzylindrige Verbrennungsmotoren umfassend ein Abgassammelrohr aus Blech und einen Katalysator, wobei das Abgassammelrohr aus jeweils einer aus Blech geformten ersten Schale und zweiten Schale besteht, wobei erste und zweite Schale im verbundenen Zustand von den Zylindern einzeln geführte Abgasrohre und einen Sammelraum bilden, in dem die Abgasrohre zusammengeführt münden und an dessen Abströmöffnung der Katalysator angeschlossen ist,
gekennzeichnet durch folgende Merkmale:erste Schale (1) und zweite Schale (2) sind als Formteile ausgebildet und mit einer im wesentlichen planen Verbindungsebene für eine Schweißverbindung versehen,der Sammelraum (7) hat bei Sicht in die jeweils hohlgeprägte Seite der ersten Schale (1) und zweiten Schale (2) einen kreisförmigen oder ovalen Querschnitt, der sich in der hohl geprägten Seite der zweiten Schale (2) trichterförmig zur Abströmöffnung (11) verengt,die im Sammelraum (7) angeordnete Abströmöffnung (11) weist einen einen Querschnittssprung bewirkenden kleineren Durchmessen als der des Katalysators (13) auf. - Abgassystem nach Anspruch 1,
dadurch gekennzeichnet, daß
die erste Schale als Oberschale (1) und die zweite Schale als Unterschale (2) ausgebildet sind. - Abgassystem nach Anspruch 1,
dadurch gekennzeichnet, daß
die Abströmöffnung (11) des Sammelraumes (7) von einem Befestigungsflansch (12) umgeben ist. - Abgassystem nach Anspruch 3,
dadurch gekennzeichnet, daß
an dem Befestigungsflansch (12) der Unterschale (2) der Katalysator (13) lösbar oder fest angeordnet ist. - Abgassystem nach Anspruch 2,
dadurch gekennzeichnet, daß
innerhalb der Oberschale (1) im Sammelraum (7) eine Abgassonde (9) angeordnet ist. - Abgassystem nach Anspruch 5,
dadurch gekennzeichnet, daß
die Abgassonde (9) in einer von allen Abgasrohren (3 bis 6) angeströmten Lage angeordnet ist. - Abgassystem nach Anspruch 2,
dadurch gekennzeichnet, daß
ein größerer Teil (7b) des Volumens des Sammelraumes (7) in der Unterschale (2) ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19938689A DE19938689A1 (de) | 1999-08-14 | 1999-08-14 | Abgassammelrohr aus Blech für mehrzylindrige Verbrennungsmotoren |
DE19938689 | 1999-08-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1083307A1 EP1083307A1 (de) | 2001-03-14 |
EP1083307B1 true EP1083307B1 (de) | 2003-03-12 |
Family
ID=7918480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00114082A Expired - Lifetime EP1083307B1 (de) | 1999-08-14 | 2000-07-07 | Abgassystem für mehrzylindrige Verbrennungsmotoren umfassend ein Abgassammelrohr aus Blech und einen Katalysator |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1083307B1 (de) |
AT (1) | ATE234422T1 (de) |
DE (2) | DE19938689A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4394868B2 (ja) | 2002-07-30 | 2010-01-06 | 日産自動車株式会社 | エンジンの排気装置 |
FR2991714B1 (fr) * | 2012-06-07 | 2017-06-09 | Renault Sas | Systeme de collecte et d'epuration de gaz d'echappement |
JP5849986B2 (ja) | 2013-04-18 | 2016-02-03 | マツダ株式会社 | エンジンの触媒付き排気管構造 |
DE102018124926A1 (de) | 2018-10-09 | 2020-04-09 | Bayerische Motoren Werke Aktiengesellschaft | Fahrzeugsitz |
RU196579U1 (ru) * | 2019-08-15 | 2020-03-05 | Общество с ограниченной ответственностью «Форесия- Металлопродукция Икзост Системс» | Каталитический коллектор системы выпуска отработавших газов двигателя внутреннего сгорания |
RU196558U1 (ru) * | 2019-09-10 | 2020-03-04 | Общество с ограниченной ответственностью "Форесия-Металлопродукция Икзост Системс" | Выпускной каталитический коллектор для многоцилиндровых двигателей внутреннего сгорания |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05171932A (ja) * | 1991-12-24 | 1993-07-09 | Hino Motors Ltd | 排気マニホルドおよびその製造方法 |
JPH1026037A (ja) * | 1996-07-09 | 1998-01-27 | Yutaka Giken Co Ltd | センサ取付ボス |
FR2777320B1 (fr) * | 1998-04-09 | 2000-09-22 | Renault | Collecteur d'echappement pour moteur a combustion interne |
-
1999
- 1999-08-14 DE DE19938689A patent/DE19938689A1/de not_active Withdrawn
-
2000
- 2000-07-07 DE DE50001432T patent/DE50001432D1/de not_active Expired - Lifetime
- 2000-07-07 EP EP00114082A patent/EP1083307B1/de not_active Expired - Lifetime
- 2000-07-07 AT AT00114082T patent/ATE234422T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1083307A1 (de) | 2001-03-14 |
DE19938689A1 (de) | 2001-02-15 |
DE50001432D1 (de) | 2003-04-17 |
ATE234422T1 (de) | 2003-03-15 |
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