DE2945079A1 - Exhaust manifold for IC engine - has steel shells with fibrous layer welded to flange engraving exhaust pipe flange - Google Patents

Exhaust manifold for IC engine - has steel shells with fibrous layer welded to flange engraving exhaust pipe flange

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Publication number
DE2945079A1
DE2945079A1 DE19792945079 DE2945079A DE2945079A1 DE 2945079 A1 DE2945079 A1 DE 2945079A1 DE 19792945079 DE19792945079 DE 19792945079 DE 2945079 A DE2945079 A DE 2945079A DE 2945079 A1 DE2945079 A1 DE 2945079A1
Authority
DE
Germany
Prior art keywords
pipe
flange
steel
pipelines
shells
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.)
Granted
Application number
DE19792945079
Other languages
German (de)
Other versions
DE2945079C2 (en
Inventor
Andres Santiago
Enrique 8901 Diedorf Santiago
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.)
Arvin Industries Deutschland GmbH
Original Assignee
Zeuna Starker GmbH and Co KG
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 Zeuna Starker GmbH and Co KG filed Critical Zeuna Starker GmbH and Co KG
Priority to DE19792945079 priority Critical patent/DE2945079C2/en
Priority to IT68112/80A priority patent/IT1188883B/en
Priority to IT5338180U priority patent/IT8053381V0/en
Priority to US06/184,091 priority patent/US4373331A/en
Priority to FR8019261A priority patent/FR2465073A1/en
Priority to SE8006197A priority patent/SE455112B/en
Priority to ES1980262175U priority patent/ES262175Y/en
Priority to GB8028909A priority patent/GB2058918B/en
Publication of DE2945079A1 publication Critical patent/DE2945079A1/en
Application granted granted Critical
Publication of DE2945079C2 publication Critical patent/DE2945079C2/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • 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
    • F01N13/14—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 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
    • 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
    • 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
    • F01N13/14—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 having thermal insulation
    • 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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • 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
    • 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
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/26—Tubes being formed by extrusion, drawing or rolling
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/02—Corrosion resistive metals
    • F01N2530/04—Steel alloys, e.g. stainless steel
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/26—Multi-layered walls

Landscapes

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

Abstract

The manifold is formed from two shells, comprising drawn, stamped or pressed sheet steel layers (23,24) with interposed aluminium silicate fibres (25), which are seam welded at edges (8,9,11,12) and spot welded at the connecting webs (10) between the passages (1,2) One layer (23) is of unalloyed and the other (24) of alloy steel. The passages have outlets (14,15) welded to a flange and a mating exhaust pipe flange (20), is connected to the flange by bolts (17) passing through bores (18) in the webs.

Description

Rohrkrümmer an VerbrennungsmotorenElbows on internal combustion engines

Die Erfindung betrifft Rohrkrürnuer an Verbrennungsmotoren zur Leitung des Abgases zwischen Motorblock und Auspuffleitung.The invention relates to pipe manifolds on internal combustion engines for conduction of the exhaust gas between the engine block and the exhaust pipe.

Herkömmliche Verbrennungsmotoren weisen als Gußstücke ausgebildete Rohrkrümmer auf, die infolge ihrer großen Wandstärke sehr schwer sind. Derartige Rohrkrümmer aus Stahlguß sind ausreichend hitzebeständig und wirken auch dämpfend auf Körperschallschwingungen.Conventional internal combustion engines are designed as castings Pipe elbows, which are very heavy due to their great wall thickness. Such Elbows made of cast steel are sufficiently heat-resistant and also have a damping effect on structure-borne sound vibrations.

Aus einzelnen Stahlrohren geschweißte Krümmer konnten sich in der Vergangenheit ihres hohen Fertigungsaufwands wegen nicht durchsetzen; ihr besonderer Nachteil liegt im übrigen darin, daß sie die Ausbreitung von Körperschall begünstigen.Elbows welded from individual steel pipes could be in the Not enforce past due to their high manufacturing costs; her special one The disadvantage is that they promote the propagation of structure-borne noise.

Demgegenüber hat sich die Erfindung die Aufgabe gestellt, einen Rohrkrümmer in Leichtbauweise zu schaffen, der nicht nur den hohen Warmebelastungen dauerhaft standhält, sondern gleichzeitig eine dämpfende Wirkung gegen die Ausbreitung von Körperschall ausübt.In contrast, the invention has the task of providing a pipe elbow to create in lightweight construction, which not only withstand the high heat loads permanently withstands, but at the same time has a dampening effect against the spread of Structure-borne noise.

Zur Lösung dieser Aufgabe schlägt die Erfinduno vor, - daß der Rohrkrümmer aus zwei a'bschalen aus Stahlblech gebildet ist, die in den an eine gemeinsame Trennebene angrenzenden Bereichen durch Schweißen miteinander verbunden sind; - daß jede Halbschale aus zwei miteinander verformten Stahlblechen gebildet ist, von denen wenigstens das innere aus zunderfestem Stahl besteht, und - daß zwischen den beiden Stahlblechen, wenigstens in den Rohrleitungen bildenden Bereichen eine dünne Isolierschicht aus verdichtbarem, hitzebeständigem Werkstoff angeordnet ist.To solve this problem, the invention proposes that the pipe bend is formed from two a'bschalen made of sheet steel, which in the at a common parting plane adjacent areas are connected to each other by welding; - that each half-shell is formed from two mutually deformed steel sheets, from which at least the inside is made of scale-resistant steel, and - that between the two steel sheets, at least in the areas forming the pipelines a thin one Insulating layer made of compressible, heat-resistant material is arranged.

Eine derartige Dopelschalenbauweise wird gelegentlich im Schalldämpferbau angewendet, jedoch in Art eines Doppelmantels, wobei ein äußerer und ein innerer Mantel teil in getrennten Formen hergestellt werden, so daß sie bei ihrem Zusammenbau einen im Verhältnis zu ihren Wandstärken breiten Hohlraum zwischen sich bilden, der mit einem hitzefesten Schallschluckstoff gefüllt wird.Such a double shell construction is occasionally used in silencer construction applied, but in the manner of a double jacket, with an outer and an inner Sheath part can be made in separate molds so that they can be used in their assembly form a cavity between them that is wide in relation to their wall thickness, which is filled with a heat-resistant sound absorbent.

Demgegenüber bringt der obige Lösungsvorschlag, dadurch daß die beiden Stahlbleche jeder Halbschale zusammen mit der Isolierschicht gemeinsam verformt werden, eine erhebliche Vereinfachung der Fertigung mit sich. Versuche haben ergeben, daß zur Unterbindung von Körperschall eine dünne,ihrer Starke nach etwa den Stahlblechen entsprechende Isolierschicht im Bereich der die Rohrleitung bildenden Oberflche der Halbschalen ausreichend ist. Infolge der Beschränkung der Ausbreitung der Isolierschicht auf die die Rohrleitungen bildenden Bereiche der Halbschalen kann die Isolierschicht durch einen Zuschnitt einer ineralfasermatte gebildet sein; das Verschweißen der Halbschalen erfolgt im Bereich der an deren Trennebene flächig angrenzenden Stege zwischen den die Rohrleitungen bildenden Bereichen. Gleichzeitig ermöglicht dieser Vorschlag eine sparsam Verwendung von Isoliermaterial.In contrast, the above proposed solution, by virtue of the fact that the two Steel sheets of each half-shell are deformed together with the insulating layer be a considerable simplification of the manufacturing process. Tests have shown that for the suppression of structure-borne noise a thin one, according to its strength like steel sheets corresponding insulating layer in the area of the surface forming the pipeline the half-shells is sufficient. As a result of the restriction on the spread of the Insulating layer The insulating layer can be applied to the areas of the half-shells that form the pipelines be formed by a cut of an ineral fiber mat; welding the Half-shells take place in the area of the webs that are flatly adjacent to their parting plane between the areas forming the pipelines. At the same time, this enables Proposal to use insulation material sparingly.

Die Herstellung kann darüberhinaus noch dadurch verbilligt werden, daß nur das innere Stahlblech jeder Halbschale aus legiertem, das äußere aber aus billigem unlegiertem Stahl besteht.The production can also be made cheaper by that only the inner steel sheet of each half-shell is made of alloy, but the outer one is made of cheap carbon steel.

Von der Formgebung her kann noch eine weitere Verbesserung der Schalldämmung dadurch erzielt werden, daß die Halbschalen in den die Rohrleitungen bildenden Bereichen sich in Richtung der Rohrachsen erstreckende Sicken aufweisen.In terms of shape, the sound insulation can still be improved further can be achieved in that the half-shells in the areas forming the pipelines have beads extending in the direction of the pipe axes.

Die erfindungsgemäß vorgeschlagene Halbschalenform ermöglicht eine einfache Herstellung jeder Halbschale aus jeweils zwei Stahl platinen, zwischen denen ein die Isolierschicht bildender Zuschnitt angeordnet ist. Alle drei Schichten einer Halbschale werden gemeinsam durch Ziehen bzw. Prägen bzw. Pressen verformt.The half-shell shape proposed according to the invention enables a easy production of each half-shell from two steel plates, between which a blank forming the insulating layer is arranged. All three shifts a half-shell are pulled together by pulling or embossing or Pressing deformed.

Im folgenden wird die Erfindung am Beispiel eines Rohrkrümmers für einen Vier-Zylinder-Reihenmotor anhand der Zeichnung erläutert.In the following the invention using the example of a pipe elbow for a four-cylinder in-line engine explained with reference to the drawing.

Es zeigt Fig. 1 eine Draufsicht auf den Rohrkrümmer, Fig. 2 eine Seitenansicht des Rohrkrümmers gemäß Fig. 1, teilweise geschnitten, entsprechend dem Schnittverlauf 11-11, Fig. 3 eine Seitenansicht des Rohrkrümers gemäß III-III der Fig. 2, und Fig. 4 einen vergrößerten Wandausschnitt gemäß IV der Fig. 3.1 shows a plan view of the pipe elbow, and FIG. 2 shows a side view of the pipe elbow according to FIG. 1, partially in section, corresponding to the course of the section 11-11, FIG. 3 shows a side view of the pipe elbow according to III-III of FIG. 2, and FIG. 4 shows an enlarged wall section according to IV of FIG. 3.

In der Draufsicht gemäß Fig. 1 gesehen, enthält der aus zwei Halbschalen zusammengesetzte Rohrkrümmer einen äußere Rohrbogen 1 und einen inneren Rohrbogen 2, wobei der äußere Rohrbogen 1 den inneren Rohrbogen 2 umfaßt. An ihren offenen Enden sind die Rohrbögen 1, 2 jeweils mit einem Flansch 3 versehen, welcher an der ußenseite des Zylinderkopfs eines nicht gezeichneten Vier- Zylinder-Reihenmotors jeweils dichtend über der Abgasöffnung des zugeordneten Zylinders angeschraubt ist. Die in die Zeichenebene gedrehte Querschnittdarstellung I (Fig. 1) zeigt, daß die Halbschalen der gasführenden Rohrbögen zur Erhöhung ihrer Stabilität breite Sicken aufweisen. Die beiden Halbschalen 5, 6 (vgl. Fig. 2) sind in der Trennebene 7 längs ihrer Umfangskanten, nämlich außen bei 8, innen bei 9 und zwischen den Rohrbogen bei 10, aber auch längs der Ränder 11, 12, des zwischen den Rohrbögen vorhandenen Steges 13 miteinander verschweißt. Zusätzliche Schweißpunkte können im Inneren der Fläche des Steges 13 vorgesehen sein. Beide Rohrbögen 1, 2 sind jeweils über einen Anschlußkragen 14, ;5 mit einer Auspuffleitung (Fig. 3) verbunden, >e'-che an einem beiden Rohrstutzen gemeinsamen Flansch 16 angeschlossen ist.Seen in the plan view according to FIG. 1, it contains two half-shells composite pipe elbow an outer pipe bend 1 and an inner pipe bend 2, the outer pipe bend 1 comprising the inner pipe bend 2. At their open The ends of the pipe bends 1, 2 are each provided with a flange 3 which is attached to the outside of the cylinder head of a four- Cylinder in-line engine is screwed in a sealing manner over the exhaust gas opening of the associated cylinder. The rotated in the plane of cross-section I (Fig. 1) shows that the Half-shells of the gas-carrying pipe bends wide beads to increase their stability exhibit. The two half-shells 5, 6 (see FIG. 2) are longitudinal in the parting plane 7 their peripheral edges, namely outside at 8, inside at 9 and between the pipe bends at 10, but also along the edges 11, 12 of the existing between the pipe bends Web 13 welded together. Additional spot welds can be made inside the Surface of the web 13 can be provided. Both pipe bends 1, 2 are each over one Connection collar 14,; 5 connected to an exhaust line (Fig. 3),> e'-che a flange 16 common to both pipe sockets is connected.

Die Schnittdarstellung gemäß Fig. 2 zeigt als zusätzlichen Befestigungspunkt eine SchrauDe 17, welche durch eine Öffnung 18 des Steges 13 sowie durch eine Bohrung 19 im Flansch 16 hindurchzeführt und in einem strichpunktiert angedeuteten Flansch 20 der Auspuffleitung eingeschraubt ist.The sectional view according to FIG. 2 shows as an additional fastening point a screw 17 which passes through an opening 18 of the web 13 and through a bore 19 in the flange 16 and in a flange indicated by dash-dotted lines 20 of the exhaust line is screwed in.

Gemäß Fig. 1 sind im Bereich des Steges 13 zwei Öffnungen 18 für Schrauben zur schwingungsfreien Montage des RohrkrL.'rnrers vo.ceseher..According to FIG. 1, there are two openings 18 for screws in the area of the web 13 for vibration-free assembly of the RohrkrL.'rnrers vo.ceseher ..

Die in Fig. 3 dargestellte Seitenansicht zeigt zwei Auspuffleitungen 21, 22, die mittels ihres gemeinsamen Flansches 20 durch eine nicht dargestellte Schraubverbindung am Flansch 16 an der Unterseite des Rohrkrümmers befestigt sind.The side view shown in Fig. 3 shows two exhaust lines 21, 22, which by means of their common flange 20 by a not shown Screw connection are attached to the flange 16 on the underside of the pipe elbow.

Der Wandausschnitt gemäß Fig. 4 verdeutlicht die Zusammensetzung der Halbschalen jeweils aus einem äußeren bevorzugt warmfesten Stahlblech 23, etwa von 1,5 mm Blechstärke und einem inneren bevorzugt zunderfestem Stahlblech 24, etwa von 0,5 mm Blechstärke. Zwischen diesen Blechen, jedoch außerhalb ihrer Umfangskanten 8 ist eine Isolierschicht 25 aus Keramikfasern, z.B. auf Aluminiumsilikat-Basis eingepreßt, wobei beim Verformen der Stahlbleche die Isolierschicht etwa von 6mm auf 2 mm zusammengedrückt wird.The wall section according to FIG. 4 illustrates the composition of the Half-shells each made of an outer preferably heat-resistant sheet steel 23, for example from 1.5 mm sheet thickness and an inner preferably scale-resistant steel sheet 24, for example of 0.5 mm sheet thickness. Between these sheets, but outside their peripheral edges 8 is an insulating layer 25 made of ceramic fibers, for example based on aluminum silicate pressed in, the insulating layer of about 6mm when deforming the steel sheets is compressed to 2 mm.

Claims (6)

Patent ansprüche Rohrkrümmer an Verbrennunqsmotoren zur Leitung des Abgases zwischen Motorblock und Auspuff leitung, dadurch gekennzeichnet, - daß er aus zwei Halbschalen (5, 6) aus Stahlblech gebildet ist, die in den an eine gemeinsame Trennebene (7) angrenzenden Bereichen durch Schweißen miteinander verbunden sind, - daß ;ede Halbschale (5, 6) aus zwei miteinander verformten Stahlblechen (23, 24) gebildet ist, von denen wenigstens das innere (24) aus zunderfestem Stahl besteht, und - daß zwischen den beiden Stahlblechen (23, 24) wenigstens in den Rohrleitungen bildenden Bereichen eine dünne Isolierschicht (25) aus verdichtbarem, hitzebeständigem Werkstoff angeordnet ist. Patent claims pipe elbow on combustion engines for the management of the Exhaust gas line between the engine block and the exhaust pipe, characterized in - that it is formed from two half-shells (5, 6) made of sheet steel, which are connected to a common Parting plane (7) adjacent areas are connected to one another by welding, - That; each half-shell (5, 6) made of two mutually deformed steel sheets (23, 24) is formed, of which at least the inner (24) consists of scale-resistant steel, - That between the two steel sheets (23, 24) at least in the pipelines areas forming a thin insulating layer (25) made of compressible, heat-resistant Material is arranged. 2. Rohrkrümmer nach Anspruch 1, dadurch gekennzeichnet, daß die Isolierschicht (25) nur in den die Rohrleitungen bildenden Bereichen zwischen den beiden Stahlblechen (23, 24) vorhanden ist und aus mineralischen Fasern besteht. 2. Pipe bend according to claim 1, characterized in that the insulating layer (25) only in the areas between the two steel sheets that form the pipelines (23, 24) is present and consists of mineral fibers. 3. Rohrkrümmer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das innere Stahlblech (24) jeder Halbschale (5, 6) aus legiertem, das äußere (23) aus unlegiertem Stahl besteht.3. Elbow according to claim 1 or 2, characterized in that the inner steel sheet (24) of each half-shell (5, 6) made of alloyed, the outer (23) made of carbon steel. 4. Rohrkrümmer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Isolierschicht vor ihrer Verformung zwischen den Stahlblechen (23, 24) als an die Endform der Rohrleitungen angepaßter Zuschnitt einer Mineralfasermatte ausgebildet ist.4. elbow according to claim 1 or 2, characterized in that the insulating layer before its deformation between the steel sheets (23, 24) as an the final shape of the pipelines adapted cut of a mineral fiber mat is. 5. Rohrkrümmer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Halbschalen (5, 6) zwischen den die Rohrleitungen bildenden Bereichen einen oder mehrere flächig an die Trennebene (7) angrenzende Stege (8, 9, 13) bilden.5. Pipe elbow according to one of claims 1 to 4, characterized in that that the half-shells (5, 6) between the areas forming the pipelines or several webs (8, 9, 13) adjoining the parting plane (7) over a large area. 6. Rohrkrümmer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Halbschalen (5, 6) in den die Rohrleitungen bildenden Bereichen sich in Richtung der Rohrachsen erstreckende Sicken (4) aufweisen.6. Pipe bend according to one of claims 1 to 5, characterized in that that the half-shells (5, 6) in the areas forming the pipelines in Have beads (4) extending in the direction of the pipe axes.
DE19792945079 1979-09-06 1979-11-08 Elbows on internal combustion engines Expired DE2945079C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE19792945079 DE2945079C2 (en) 1979-11-08 1979-11-08 Elbows on internal combustion engines
IT68112/80A IT1188883B (en) 1979-09-06 1980-07-14 MANIFOLD FOR INTERNAL COMBUSTION ALTERNATIVE ENGINES
IT5338180U IT8053381V0 (en) 1979-11-08 1980-07-14 MANIFOLD FOR INTERNAL COMBUSTION ALTERNATIVE ENGINES
US06/184,091 US4373331A (en) 1979-09-06 1980-09-04 Manifold on an internal combustion engine
FR8019261A FR2465073A1 (en) 1979-09-06 1980-09-05 MANIFOLD FOR INTERNAL COMBUSTION ENGINES
SE8006197A SE455112B (en) 1979-09-06 1980-09-05 INCORPORATOR HOOK FOR COMBUSTION ENGINE
ES1980262175U ES262175Y (en) 1979-09-06 1980-09-05 GAS COLLECTOR IN COMBUSTION ENGINES.
GB8028909A GB2058918B (en) 1979-09-06 1980-09-08 I c engine exhaust manifold construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792945079 DE2945079C2 (en) 1979-11-08 1979-11-08 Elbows on internal combustion engines

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Publication Number Publication Date
DE2945079A1 true DE2945079A1 (en) 1981-05-21
DE2945079C2 DE2945079C2 (en) 1982-12-23

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IT (1) IT8053381V0 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333591A1 (en) * 1983-09-16 1985-03-28 Daimler-Benz Ag, 7000 Stuttgart Exhaust-carrying component
EP0969188A3 (en) * 1998-06-29 2001-11-28 CRC Centro Ricerche Cagiva S.A. Fixing device for at least one exhaust or intake manifold of an internal combustion engine
EP1241330A2 (en) * 2001-03-16 2002-09-18 Zeuna-Stärker Gmbh & Co Kg Method for making an exhaust manifold and exhaust manifold made thereby

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526321C (en) * 1931-06-04 Valentin Van Horn Silencer
DE2362015A1 (en) * 1973-12-13 1975-06-19 Volkswagenwerk Ag Exhaust gas thermal reactor - for after-burning of carbon monoxide and unburnt hydrocarbons in motor vehicle exhaust gases
DE2129738B2 (en) * 1971-06-15 1975-11-06 Motorenfabrik Hatz Kg, 8399 Ruhstorf Internal combustion engine
DE2558816A1 (en) * 1975-07-22 1977-02-03 Toyota Motor Co Ltd EXHAUST REACTOR DEVICE FOR COMBUSTION ENGINES
DE2535002A1 (en) * 1975-08-05 1977-02-10 Zeuna Staerker Kg After burner installation cylinder - fits to combustion chamber pipes and has angular cross sectioned ring seal with pipe union welded

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526321C (en) * 1931-06-04 Valentin Van Horn Silencer
DE2129738B2 (en) * 1971-06-15 1975-11-06 Motorenfabrik Hatz Kg, 8399 Ruhstorf Internal combustion engine
DE2362015A1 (en) * 1973-12-13 1975-06-19 Volkswagenwerk Ag Exhaust gas thermal reactor - for after-burning of carbon monoxide and unburnt hydrocarbons in motor vehicle exhaust gases
DE2558816A1 (en) * 1975-07-22 1977-02-03 Toyota Motor Co Ltd EXHAUST REACTOR DEVICE FOR COMBUSTION ENGINES
DE2535002A1 (en) * 1975-08-05 1977-02-10 Zeuna Staerker Kg After burner installation cylinder - fits to combustion chamber pipes and has angular cross sectioned ring seal with pipe union welded

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
US-Z: Automotive Engineering, Okt. 1979, Seiten 6, 7 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333591A1 (en) * 1983-09-16 1985-03-28 Daimler-Benz Ag, 7000 Stuttgart Exhaust-carrying component
EP0969188A3 (en) * 1998-06-29 2001-11-28 CRC Centro Ricerche Cagiva S.A. Fixing device for at least one exhaust or intake manifold of an internal combustion engine
EP1241330A2 (en) * 2001-03-16 2002-09-18 Zeuna-Stärker Gmbh & Co Kg Method for making an exhaust manifold and exhaust manifold made thereby
EP1241330A3 (en) * 2001-03-16 2003-10-08 Zeuna-Stärker Gmbh & Co Kg Method for making an exhaust manifold and exhaust manifold made thereby

Also Published As

Publication number Publication date
DE2945079C2 (en) 1982-12-23
IT8053381V0 (en) 1980-07-14

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