EP1225315B1 - Method for manufacturing an exhaust gas manifold - Google Patents
Method for manufacturing an exhaust gas manifold Download PDFInfo
- Publication number
- EP1225315B1 EP1225315B1 EP02000755A EP02000755A EP1225315B1 EP 1225315 B1 EP1225315 B1 EP 1225315B1 EP 02000755 A EP02000755 A EP 02000755A EP 02000755 A EP02000755 A EP 02000755A EP 1225315 B1 EP1225315 B1 EP 1225315B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- manifold housing
- section
- manifold
- cross
- exhaust
- 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
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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
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- 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
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49345—Catalytic device making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49391—Tube making or reforming
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49398—Muffler, manifold or exhaust pipe making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49428—Gas and water specific plumbing component making
- Y10T29/49437—Flue connector device making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49428—Gas and water specific plumbing component making
- Y10T29/4944—Return connector device making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
Definitions
- the invention relates to a method for producing an exhaust manifold for multi-cylinder Internal combustion engines.
- exhaust collector or manifold are called Components used. They cause the exhaust gases produced during combustion multiple cylinders into a cost-effective single-flow exhaust aftertreatment system, in particular for emission and noise reduction, to be transferred.
- Exhaust manifold In contrast to cast gas produced exhaust manifolds are built Exhaust manifold with or without catalysts usually from a larger number made of components.
- the state of the art includes in this context Exhaust manifold or exhaust manifold, as described in DE 195 10 602 C1 or the DE 43 39 290 C2 are described.
- EP 0 928 885 A2 includes an exhaust device for an internal combustion engine and a method for producing the exhaust device to the state of Technology.
- the exhaust device has a catalyst and double-walled leads for connecting exhaust gas exits of the internal combustion engine with the Catalyst.
- the exhaust device comprises two integral shells, of which each about half of the housing wall of the catalyst and half of the outer walls of the various leads forms. Each shell will be one originally flat sheet metal part formed by plastic forming. After that will be the shells welded together.
- From DE 44 44 759 A1 is a method and an apparatus for manufacturing an exhaust inlet port for a motor vehicle catalyst out.
- an outlet tube bulged hydraulically is an outlet tube bulged hydraulically. Subsequently, the deformed tube divided in the middle of the bulge by a diagonal cut. The resulting Hopper openings of the inlet or outlet are then to the catalyst housing welded.
- US 5 031 401 A further includes a reactor plant for the purification of from internal combustion engines escaping gas to the prior art. These has a housing having an innerliner and fibrous therein Material is provided.
- the collector housing provides a connection between the head flange, which at the multi-cylinder exhaust side of an engine is determined, and the tail flange connected to the usually single-channel exhaust dissipation system becomes. It is known in the collector housing catalyst components encase.
- the invention is based on the prior art, the object of a To show a method which is a cost-effective production of quality high-quality exhaust manifolds for multi-cylinder internal combustion engines allows.
- a first solution to this problem consists in a method according to claim 1.
- a tubular output profile is used, which in his Cross-sectional dimensions corresponds to the diameter of the later collector housing.
- the collector housing is formed by upstream of the inflow is made, for example, by bending and Pressure forming or embossing.
- the inflow channel receives a rectangular Cross-section with flattened longitudinal sides and rounded narrow sides.
- the collector housing are then the catalyst components from the outflow side built-in. Subsequently, the outflow channel is then formed.
- the second solution of the problem is characterized by a method according to claim 2.
- Core here is the production of the collector housing from a tubular output profile by hydroforming, wherein the inlet side of the inflow channel is made in which the initial or intermediate profile to a substantially rectangular cross section with rounded narrow sides is widened.
- the Inflow channel is an integral part of the collector housing.
- a catalyst is integrated in the collector housing.
- the header body is molded with the inflow channel.
- the catalyst system that is a carrier with Blähmatte, in the collector housing brought in. This process is technically also canning process called.
- the discharge channel is retracted by pressing and receives in this case a reduced relative to the cross section of the collector housing, essentially circular cross-section.
- the two independent solutions according to the invention enable the production of exhaust collectors, which may consist of a minimum of three components, namely the head flange and the header housing with molded outflow channel as well the catalyst.
- the exhaust collector does not have to be necessary from a circular Tube can be produced as output profile. Also oval or polygonal profile cross sections are usable. There is a cost savings because welding operations omitted. Also, the need for different tools for the production of individual components is lower.
- the durability of the exhaust manifold can be increased, in particular by the elimination of inhomogeneities, such as welds and overlaps.
- a shot flange is attached to the outflow channel (claim 4).
- the shot flange can be omitted.
- in the pressure shaping of the outflow channel could Bead be pressed to the collector's end. This can then be a form-fitting Connection, for example by a spring element, with the dissipative Exhaust pipe can be generated.
- the inflow channel passes through a curved Pipe section in the collector housing over.
- FIGS. 1 and 2 respectively designate an exhaust gas collector.
- the Exhaust manifolds 1, 2 correspond in their basic structure and method of production, so that corresponding components carry the same reference numerals.
- the exhaust manifolds 1, 2 are used in multi-cylinder internal combustion engines. About an exhaust manifold 1, 2 are formed during combustion Exhaust gases from the cylinders in a single-pass exhaust aftertreatment system transferred. The exhaust aftertreatment is used in particular for emission and noise reduction.
- An exhaust collector 1 or 2 has a collector housing 3, on which an inflow channel 4 and an outflow channel 5 is formed.
- the collector housing 3 can by Hydroforming of a tubular initial profile are formed. In this case, the collector housing 3 receives its bulbous cross-sectional configuration. Subsequently, the inflow channel 4 becomes a substantially rectangular Cross-section with rounded narrow sides 6 expanded. The cross-sectional configuration of the inflow channel 4 can be seen in dashed lines in the figure. 2 The expansion of the inflow 4 takes place with a tool, for example over a thorn.
- the collector housing 3 are also formed on a tubular output profile, which with its cross-sectional dimensions the diameter of the later collector housing 3 corresponds.
- the output profile Positionally fixed by an outer and / or inner support. Then receives the Inflow 4 its Querschntitskonfiguration by way of a train pressure operation as well as embossing and widening.
- the outflow channel 5 of the collector housing 3 is then retracted by pressing and thereby receives a reduced relative to the cross section of the collector housing 3, essentially circular cross-section.
- the collector housing 3 After the manufacture of the collector housing 3 only has a head flange 7th be welded to the inflow 4.
- inflow openings 8 In the head flange 7 are inflow openings 8 arranged for to be transferred from the cylinders of the internal combustion engine Exhaust gases.
- the exhaust manifold 2 In contrast to the exhaust manifold 1, the exhaust manifold 2 consists of only two Components, namely the collector housing 3 with integrally formed outflow channel and the welded-head flange 7. The discharge channel 5 is on the collector housing. 3 affiliated by pressing fed.
- the inflow channel 4 passes through a curved pipe section 11 into the collector housing 3.
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- 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 Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
- Separation Of Particles Using Liquids (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Abgassammlers für mehrzylindrige Brennkraftmaschinen.The invention relates to a method for producing an exhaust manifold for multi-cylinder Internal combustion engines.
An Brennkraftmaschinen werden Abgassammler oder auch Krümmer genannte Bauteile eingesetzt. Sie bewirken, dass die bei der Verbrennung entstehenden Abgase mehrerer Zylinder in ein kostengünstiges einflutiges System zur Abgasnachbehandlung, insbesondere zur Emissions- und Schallreduzierung, überführt werden.At internal combustion engines exhaust collector or manifold are called Components used. They cause the exhaust gases produced during combustion multiple cylinders into a cost-effective single-flow exhaust aftertreatment system, in particular for emission and noise reduction, to be transferred.
Im Gegensatz zu gusstechnisch hergestellten Abgaskrümmern werden gebaute Abgassammler mit bzw. ohne Katalysatoren üblicherweise aus einer größeren Anzahl von Bauteilen hergestellt. Zum Stand der Technik zählen in diesem Zusammenhang Abgaskrümmer bzw. Abgassammler, wie sie in der DE 195 10 602 C1 oder der DE 43 39 290 C2 beschrieben sind.In contrast to cast gas produced exhaust manifolds are built Exhaust manifold with or without catalysts usually from a larger number made of components. The state of the art includes in this context Exhaust manifold or exhaust manifold, as described in DE 195 10 602 C1 or the DE 43 39 290 C2 are described.
Durch die EP 0 928 885 A2 zählt eine Abgasvorrichtung für einen Verbrennungsmotor sowie ein Verfahren zu Herstellung der Abgasvorrichtung zum Stand der Technik. Die Abgasvorrichtung besitzt einen Katalysator und doppelwandige Zuleitungen zum Verbinden von Abgasausgängen des Verbrennungsmotors mit dem Katalysator. Die Abgasvorrichtung weist zwei einstückige Schalen auf, von denen jede ungefähr die Hälfte der Gehäusewand des Katalysators und die Hälfte der äußeren Wände der verschiedenen Zuleitungen bildet. Jede Schale wird aus einem ursprünglich ebenen Blechteil durch plastisches Umformen gebildet. Danach werden die Schalen miteinander verschweißt.EP 0 928 885 A2 includes an exhaust device for an internal combustion engine and a method for producing the exhaust device to the state of Technology. The exhaust device has a catalyst and double-walled leads for connecting exhaust gas exits of the internal combustion engine with the Catalyst. The exhaust device comprises two integral shells, of which each about half of the housing wall of the catalyst and half of the outer walls of the various leads forms. Each shell will be one originally flat sheet metal part formed by plastic forming. After that will be the shells welded together.
Aus der DE 44 44 759 A1 geht ein Verfahren und eine Vorrichtung zur Herstellung eines Abgaseinlassstutzens für einen Kraftfahrzeug-Katalysator hervor. Hierzu wird ein Ausgangsrohr hydraulisch ausgebaucht. Anschließend wird das verformte Rohr mittig der Ausbauchung durch einen Schrägschnitt geteilt. Die so entstandenen Trichteröffnungen des Ein- bzw. Auslassstutzens werden dann an das Katalysatorgehäuse geschweißt.From DE 44 44 759 A1 is a method and an apparatus for manufacturing an exhaust inlet port for a motor vehicle catalyst out. For this purpose is an outlet tube bulged hydraulically. Subsequently, the deformed tube divided in the middle of the bulge by a diagonal cut. The resulting Hopper openings of the inlet or outlet are then to the catalyst housing welded.
Durch die US 5 031 401 A zählt des Weiteren eine Reaktoranlage zur Reinigung von aus Verbrennungskraftmaschinen austretendem Gas zum Stand der Technik. Diese weist ein Gehäuse auf, das mit einer Innenisolierung und darin eingebrachtem faserartigen Material versehen ist.US 5 031 401 A further includes a reactor plant for the purification of from internal combustion engines escaping gas to the prior art. These has a housing having an innerliner and fibrous therein Material is provided.
Die einzelnen Bauteile der bekannten Abgassammler werden überwiegend durch Schmelzschweißverfahren miteinander verbunden. Sieht man von den im allgemeinen sehr aufwendigen luftspaltisolierten Abgaskrümmern ab, so werden bei einwandigen Bauformen grundsätzlich drei Konstruktionsprinzipien eingesetzt. Diese sind:
- Halbschalen-
- Rohr- und
- Schale-Rohr-Kombinationsbauweisen.
- half-shell
- Pipe and
- Shell-tube combination construction.
Das Sammlergehäuse stellt eine Verbindung zwischen dem Kopfflansch, der an der mehrzylindrigen Auslassseite einer Kraftmaschine festgelegt wird, und dem Schlussflansch her, an den in der Regel einkanalig das ableitende Auspuffsystem angeschlossen wird. Bekannt ist es, in das Sammlergehäuse Katalysatorkomponenten einzuhausen.The collector housing provides a connection between the head flange, which at the multi-cylinder exhaust side of an engine is determined, and the tail flange connected to the usually single-channel exhaust dissipation system becomes. It is known in the collector housing catalyst components encase.
Der Erfindung liegt ausgehend vom Stand der Technik die Aufgabe zugrunde, ein Verfahren aufzuzeigen, welches eine kostengünstige Herstellung von qualitativ hochwertigen Abgassammlern für mehrzylindrige Brennkraftmaschinen ermöglicht. The invention is based on the prior art, the object of a To show a method which is a cost-effective production of quality high-quality exhaust manifolds for multi-cylinder internal combustion engines allows.
Eine erste Lösung dieser Aufgabe besteht in einem Verfahren gemäß Anspruch 1. Hierbei kommt ein rohrförmiges Ausgangsprofil zum Einsatz, welches in seinen Querschnittsabmessungen dem Durchmesser des späteren Sammlergehäuses entspricht. An diesem Ausgangsprofil wird das Sammlergehäuse ausgebildet, indem einströmseitig der Einströmkanal hergestellt wird, beispielsweise durch Biegen und Druckumformen bzw. Prägen. Hierbei erhält der Einströmkanal einen rechteckigen Querschnitt mit abgeflachten Längsseiten und gerundeten Schmalseiten. In das Sammlergehäuse werden dann von der Ausströmseite her die Katalysatorkomponenten eingebaut. Anschließend wird dann der Ausströmkanal ausgeformt.A first solution to this problem consists in a method according to claim 1. Here, a tubular output profile is used, which in his Cross-sectional dimensions corresponds to the diameter of the later collector housing. At this output profile, the collector housing is formed by upstream of the inflow is made, for example, by bending and Pressure forming or embossing. Here, the inflow channel receives a rectangular Cross-section with flattened longitudinal sides and rounded narrow sides. In the Collector housing are then the catalyst components from the outflow side built-in. Subsequently, the outflow channel is then formed.
Die zweite Lösung der Aufgabe ist durch ein Verfahren gemäß Anspruch 2 charakterisiert.The second solution of the problem is characterized by a method according to
Kern hierbei ist die Herstellung des Sammlergehäuses aus einem rohrförmigen Ausgangsprofil durch Innenhochdruckformung, wobei einströmseitig der Einströmkanal hergestellt wird, in dem das Ausgangs- bzw. Zwischenprofil zu einem im wesentlichen rechteckigen Querschnitt mit gerundeten Schmalseiten aufgeweitet wird. Der Einströmkanal ist einstückiger Bestandteil des Sammlergehäuses. In das Sammlergehäuse wird ein Katalysator integriert.Core here is the production of the collector housing from a tubular output profile by hydroforming, wherein the inlet side of the inflow channel is made in which the initial or intermediate profile to a substantially rectangular cross section with rounded narrow sides is widened. Of the Inflow channel is an integral part of the collector housing. In the collector housing a catalyst is integrated.
Zunächst wird das Sammlergehäuse mit dem Einströmkanal geformt. Anschließend wird das Katalysatorsystem, das heißt ein Träger mit Blähmatte, in das Sammlergehäuse eingebracht. Dieser Vorgang wird fachterminologisch auch Canning-Vorgang genannt. Anschließend wird der Ausströmkanal durch Drücken eingezogen und erhält hierbei einen gegenüber dem Querschnitt des Sammlergehäuses verringerten, im wesentlichen kreisrunden Querschnitt.First, the header body is molded with the inflow channel. Subsequently the catalyst system, that is a carrier with Blähmatte, in the collector housing brought in. This process is technically also canning process called. Subsequently, the discharge channel is retracted by pressing and receives in this case a reduced relative to the cross section of the collector housing, essentially circular cross-section.
Die beiden eigenständigen Lösungen gemäß der Erfindung ermöglichen die Fertigung von Abgassammlern, die aus minimal drei Bauteilen bestehen können, nämlich dem Kopfflansch und dem Sammlergehäuse mit angeformtem Ausströmkanal sowie dem Katalysator. Der Abgassammler muss nicht notwendig aus einem kreisrunden Rohr als Ausgangsprofil hergestellt werden. Auch ovale oder mehreckige Profilquerschnitte sind einsetzbar. Es wird eine Kostenersparnis erzielt, weil Schweißoperationen entfallen. Auch der Bedarf an unterschiedlichen Werkzeugen für die Herstellung von Einzelbauteilen ist geringer.The two independent solutions according to the invention enable the production of exhaust collectors, which may consist of a minimum of three components, namely the head flange and the header housing with molded outflow channel as well the catalyst. The exhaust collector does not have to be necessary from a circular Tube can be produced as output profile. Also oval or polygonal profile cross sections are usable. There is a cost savings because welding operations omitted. Also, the need for different tools for the production of individual components is lower.
Des Weiteren kann die Dauerhaltbarkeit der Abgassammler erhöht werden, insbesondere durch den Entfall von Inhomogenitäten, wie Schweißnähte und Überlappungen.Furthermore, the durability of the exhaust manifold can be increased, in particular by the elimination of inhomogeneities, such as welds and overlaps.
Nach der Fertigung des Sammlergehäuses muss lediglich der Kopfflansch am Einströmkanal festgelegt werden. Dies erfolgt durch einen Schweißvorgang (Anspruch 3).After the manufacture of the collector housing, only the head flange on the inlet channel be determined. This is done by a welding process (claim 3).
Falls erforderlich wird an den Ausströmkanal ein Schussflansch gefügt (Anspruch 4). Je nach Auslegung der ableitenden Abgasrohrleitung kann der Schussflansch entfallen. In diesem Fall könnte bei der Druckformgebung des Ausströmkanals eine Wulst an das Sammlerende angedrückt werden. Hierüber kann dann eine formschlüssige Verbindung, beispielsweise durch ein Federelement, mit der ableitenden Abgasrohrleitung erzeugt werden.If necessary, a shot flange is attached to the outflow channel (claim 4). Depending on the design of the dissipative exhaust pipe, the shot flange can be omitted. In this case, in the pressure shaping of the outflow channel could Bead be pressed to the collector's end. This can then be a form-fitting Connection, for example by a spring element, with the dissipative Exhaust pipe can be generated.
Gemäß den Merkmalen im Anspruch 5 geht der Einströmkanal durch einen gekrümmten
Rohrabschnitt in das Sammlergehäuse über. Diese Bauform ist besonders
platzsparend und effizient.According to the features in
Die Erfindung ist nachfolgend in den Zeichnungen anhand zweier Ausführungsbeispiele näher beschrieben. Es zeigen:
- Figur 1
- in einer Seitenperspektive eine Ansicht einer ersten Ausführungsform eines Abgassammlers und
Figur 2- in einer perspektivischen Ansicht auf den Kopfflansch eine zweite Ausführungsform eines Abgassammlers.
- FIG. 1
- in a side perspective view of a first embodiment of an exhaust manifold and
- FIG. 2
- in a perspective view of the head flange, a second embodiment of an exhaust manifold.
In den Figuren 1 und 2 ist mit 1 bzw. 2 jeweils ein Abgassammler bezeichnet. Die
Abgassammler 1, 2 entsprechen im grundsätzlichen Aufbau und der Herstellungsweise,
so dass einander entsprechende Bauteile die gleichen Bezugszeichen tragen. In FIGS. 1 and 2, 1 and 2 respectively designate an exhaust gas collector. The
Die Abgassammler 1, 2 kommen bei mehrzylindrigen Brennkraftmaschinen zum Einsatz.
Über einen Abgassammler 1, 2 werden die bei der Verbrennung entstehenden
Abgase aus den Zylindern in ein einflutiges System zur Abgasnachbehandlung
überführt. Die Abgasnachbehandlung dient insbesondere zur Emissions- und Schallreduzierung.The
Ein Abgassammler 1 bzw. 2 weist ein Sammlergehäuse 3 auf, an dem ein Einströmkanal
4 und ein Ausströmkanal 5 ausgebildet ist. Das Sammlergehäuse 3 kann durch
Innenhochdruckformung eines rohrförmigen Ausgangsprofils gebildet werden.
Hierbei erhält das Sammlergehäuse 3 seine bauchige Querschnittskonfiguration.
Anschließend wird der Einströmkanal 4 zu einem im wesentlichen rechteckigen
Querschnitt mit gerundeten Schmalseiten 6 aufgeweitet. Die Querschnittskonfiguration
des Einströmkanals 4 erkennt man in gestrichelter Linienführung in der Figur 2.
Das Aufweiten des Einströmkanals 4 erfolgt mit einem Werkzeug, beispielsweise
über einen Dorn.An
Gemäß der alternativen eigenständigen Lösung der Erfindung kann das Sammlergehäuse
3 auch an einem rohrförmigen Ausgangsprofil ausgebildet werden, welches
mit seinen Querschnittsabmessungen dem Durchmesser des späteren Sammlergehäuses
3 entspricht. Im Bereich des Sammlergehäuses 3 wird das Ausgangsprofil
durch eine äußere und/oder innere Abstützung lagefixiert. Anschließend erhält der
Einströmkanal 4 seine Querschntitskonfiguration im Wege einer Zugdruckoperation
sowie Prägen und Aufweiten.According to the alternative independent solution of the invention, the
Bei beiden Abgassammlern 1 bzw. 2 wird ein Katalysator bzw. Katalysatorkomponenten
in das Sammlergehäuse 3 integriert. Hierzu wird das Sammlergehäuse 3
geformt, das Katalysatorsystem eingebracht und anschließend der Ausströmkanal 5
durch Drücken eingezogen.In both
Der Ausströmkanal 5 des Sammlergehäuses 3 wird dann durch Drücken eingezogen
und erhält hierbei einen gegenüber dem Querschnitt des Sammlergehäuses 3 verringerten,
im wesentlichen kreisrunden Querschnitt.The
Nach der Fertigung des Sammlergehäuses 3 muss lediglich noch ein Kopfflansch 7
am Einströmkanal 4 angeschweißt werden. Im Kopfflansch 7 sind Einströmöffnungen
8 angeordnet für die aus den Zylindern der Brennkraftmaschine zu überführenden
Abgase.After the manufacture of the
Beim Abgassammler 1 gemäß der Figur 1 wird ferner an den Ausströmkanal 5 ein
Schussflansch 9 gefügt. Über den Schussflansch 9 kann eine nachgeschaltete, die
Abgase weiterführende Rohrleitung 10 mit dem Abgassammler 1 verbunden werden.In the exhaust manifold 1 according to the figure 1 is further to the outflow channel 5 a
Im Gegensatz zum Abgassammler 1 besteht der Abgassammler 2 aus nur zwei
Bauteilen, nämlich dem Sammlergehäuse 3 mit angeformtem Ausströmkanal und
dem angeschweißten Kopfflansch 7. Der Ausströmkanal 5 ist am Sammlergehäuse 3
angegliedert durch Drücken eingezogen.In contrast to the exhaust manifold 1, the
Man erkennt ferner insbesondere anhand der Figur 1, dass der Einströmkanal 4
durch einen gekrümmten Rohrabschnitt 11 in das Sammlergehäuse 3 übergeht.It can also be seen in particular with reference to FIG. 1 that the inflow channel 4
passes through a
Claims (5)
- Method for manufacturing an exhaust gas manifold for multi-cylinder internal combustion engines, with a manifold housing (3) which has an inlet passage (4) with a head flange (7) and an outlet passage (5), characterized in that the manifold housing (3) is formed on a tubular starting profile corresponding in its cross-sectional dimensions to the diameter of the manifold housing (3), and the inlet passage is shaped to form a rectangular cross section with rounded narrow sides (6), a catalytic converter is then integrated into the manifold housing (3) and the outlet passage (5) of the manifold housing (3) is then drawn in by pressing with a circular cross section which is reduced in comparison to the cross section of the manifold housing (3).
- Method for manufacturing an exhaust gas manifold for multi-cylinder internal combustion engines, with a manifold housing (3) which has an inlet passage (4) with a head flange (7) and an outlet passage (5), characterized in that the manifold housing (3) is formed by internal high-pressure forming of a tubular starting profile and the inlet passage (4) is then shaped to form a rectangular cross section with rounded narrow sides (6), a catalytic converter is subsequently integrated into the manifold housing (3) and the outlet passage (5) of the manifold housing (3) is then drawn in by pressing with a circular cross section which is reduced in comparison to the cross section of the manifold housing (3).
- Method according to either of Claims 1 and 2, characterized in that the head flange (7) is welded onto the inlet passage (4).
- Method according to one of Claims 1 to 3, characterized in that a weft-type flange (9) is joined onto the outlet passage (5).
- Method according to one of Claims 1 to 4, characterized in that the inlet passage (4) merges into the manifold housing (3) through a curved pipe section (11).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10102896A DE10102896B4 (en) | 2001-01-23 | 2001-01-23 | Process for the production of an exhaust manifold |
DE10102896 | 2001-01-23 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1225315A2 EP1225315A2 (en) | 2002-07-24 |
EP1225315A3 EP1225315A3 (en) | 2003-12-03 |
EP1225315B1 true EP1225315B1 (en) | 2005-11-23 |
EP1225315B8 EP1225315B8 (en) | 2006-06-07 |
Family
ID=7671453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02000755A Expired - Lifetime EP1225315B8 (en) | 2001-01-23 | 2002-01-12 | Method for manufacturing an exhaust gas manifold |
Country Status (5)
Country | Link |
---|---|
US (1) | US6687996B2 (en) |
EP (1) | EP1225315B8 (en) |
AT (1) | ATE310898T1 (en) |
CZ (1) | CZ298339B6 (en) |
DE (2) | DE10102896B4 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6826834B2 (en) * | 2003-02-21 | 2004-12-07 | I-Long Wu | Manufacturing method of a muffler assembly |
DE102009031980C5 (en) | 2009-07-06 | 2017-12-14 | Benteler Automobiltechnik Gmbh | Method and device for fastening an exhaust gas converter module |
DE102010005761A1 (en) | 2010-01-25 | 2011-07-28 | Benteler Automobiltechnik GmbH, 33102 | exhaust assembly |
GB2535001A (en) * | 2015-12-22 | 2016-08-10 | Daimler Ag | Exhaust pipe element for an exhaust system of a vehicle, in particular a motor vehicle |
CN111531062B (en) * | 2020-04-14 | 2021-11-19 | 大连理工大学 | Automatic turning device of automobile exhaust mixing pipe lobe |
Citations (2)
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US5031401A (en) * | 1971-07-08 | 1991-07-16 | Hinderks M V | Means for treatment of the exhaust gases of combustion |
DE4444759A1 (en) * | 1994-12-16 | 1996-06-20 | Eberspaecher J | Method of mfg. an exhaust inlet connection for catalytic converter of motor vehicle |
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US4732025A (en) * | 1987-05-22 | 1988-03-22 | Ap Industries, Inc. | Precision bending apparatus and process |
US5148597A (en) * | 1990-08-27 | 1992-09-22 | Tennessee Gas Pipeline Company | Method of making a collector device |
FR2679602B1 (en) * | 1991-07-26 | 1995-03-24 | Valeo Thermique Moteur Sa | CATALYST CONTAINER WITH SHEET CATALYST SUPPORT. |
JP3118093B2 (en) * | 1992-08-31 | 2000-12-18 | 松本重工業株式会社 | Exhaust manifold manufacturing method |
US5333775A (en) * | 1993-04-16 | 1994-08-02 | General Motors Corporation | Hydroforming of compound tubes |
US5644829A (en) * | 1993-08-16 | 1997-07-08 | T I Corporate Services Limited | Method for expansion forming of tubing |
DE4339290C2 (en) * | 1993-11-18 | 1995-11-02 | Daimler Benz Ag | Process for the production of pipe T-pieces from an unbranched continuous pipe section by internal high pressure forming and device for carrying out the process |
DE19505710C2 (en) * | 1994-02-21 | 2002-10-17 | Aisin Takaoka Ltd | exhaust |
US5471857A (en) * | 1994-03-07 | 1995-12-05 | Mascotech Tubular Products, Inc. | Process for hydroforming a vehicle manifold |
US6026570A (en) * | 1994-05-11 | 2000-02-22 | Zeuna-Staker Gmbh & Co., Kg | Method for producing an exhaust gas manifold for a multi-cylinder engine |
JP3509217B2 (en) * | 1994-09-20 | 2004-03-22 | 株式会社日立製作所 | Forming method and forming apparatus for deformed cross-section pipe |
FR2727466B1 (en) * | 1994-11-25 | 1997-01-17 | Renault | EXHAUST MANIFOLD FOR INTERNAL COMBUSTION ENGINE |
FR2738289B1 (en) * | 1995-08-31 | 1997-10-17 | Renault | EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE |
DE19510602C1 (en) * | 1995-03-23 | 1996-04-11 | Daimler Benz Ag | Exhaust gas system for multicylinder engine |
DE19511514C1 (en) * | 1995-03-29 | 1996-08-01 | Daimler Benz Ag | Exhaust manifold for IC engine |
EP0849445B1 (en) * | 1996-12-20 | 2001-11-14 | Zeuna-Stärker Gmbh & Co Kg | Exhaust manifold and process for its manufacture |
DE19706386B4 (en) * | 1997-02-19 | 2006-03-16 | Daimlerchrysler Ag | Method for producing an air-gap-insulated exhaust manifold |
DE19752773C2 (en) * | 1997-11-28 | 1999-09-02 | Daimler Chrysler Ag | Method for producing an air gap-insulated exhaust manifold of a vehicle exhaust system |
ES2194431T3 (en) * | 1998-01-07 | 2003-11-16 | Scambia Ind Dev Ag | GAS EXHAUST DEVICE FOR AN INTERNAL COMBISTION ENGINE. |
US6279364B1 (en) * | 1999-02-16 | 2001-08-28 | Gary E. Morphy | Sealing method and press apparatus |
-
2001
- 2001-01-23 DE DE10102896A patent/DE10102896B4/en not_active Expired - Fee Related
-
2002
- 2002-01-12 EP EP02000755A patent/EP1225315B8/en not_active Expired - Lifetime
- 2002-01-12 AT AT02000755T patent/ATE310898T1/en not_active IP Right Cessation
- 2002-01-12 DE DE50204982T patent/DE50204982D1/en not_active Expired - Lifetime
- 2002-01-16 US US10/050,594 patent/US6687996B2/en not_active Expired - Fee Related
- 2002-01-23 CZ CZ20020280A patent/CZ298339B6/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5031401A (en) * | 1971-07-08 | 1991-07-16 | Hinderks M V | Means for treatment of the exhaust gases of combustion |
DE4444759A1 (en) * | 1994-12-16 | 1996-06-20 | Eberspaecher J | Method of mfg. an exhaust inlet connection for catalytic converter of motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
CZ298339B6 (en) | 2007-08-29 |
DE10102896B4 (en) | 2004-01-15 |
EP1225315A3 (en) | 2003-12-03 |
US6687996B2 (en) | 2004-02-10 |
EP1225315B8 (en) | 2006-06-07 |
DE10102896A1 (en) | 2002-10-31 |
US20020116819A1 (en) | 2002-08-29 |
CZ2002280A3 (en) | 2002-09-11 |
ATE310898T1 (en) | 2005-12-15 |
DE50204982D1 (en) | 2005-12-29 |
EP1225315A2 (en) | 2002-07-24 |
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