DE19918988A1 - Exhaust manifold for multi-cylinder internal combustion engine - Google Patents
Exhaust manifold for multi-cylinder internal combustion engineInfo
- Publication number
- DE19918988A1 DE19918988A1 DE1999118988 DE19918988A DE19918988A1 DE 19918988 A1 DE19918988 A1 DE 19918988A1 DE 1999118988 DE1999118988 DE 1999118988 DE 19918988 A DE19918988 A DE 19918988A DE 19918988 A1 DE19918988 A1 DE 19918988A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust manifold
- compensator
- internal combustion
- cylinder internal
- compensators
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Die Erfindung bezieht sich auf einen Auspuffkrümmer für mehrzylindrige Brennkraftmaschinen. Auspuffkrümmer mehrzylindriger Brennkraftmaschinen bedürfen wegen der Wärmedehnung eines Längenausgleiches. Bekannt sind Schiebesitze, die jedoch auf Dauer keine Gasdichtheit gewährleisten. Erfindungsgemäß werden gasdichte Kompensatoren 3 vorgeschlagen. Diese bilden mit dem Auspuffkrümmer 1 eine bauliche Einheit. Besonders vorteilhaft ist die Ausbildung des Kompensators 3 als eine U-förmige, umlaufende Ausstülpung 4, die wie der Auspuffkrümmer 1 in Gießtechnik hergestellt ist (Fig. 1). Ist eine besonders nachgiebige,jedoch unbedingt gasdichte Verbindung erforderlich, kann der Kompensator 3 als ein separates Blechteil 5 ausgeführt sein, welches an seinen Stirnseiten 6a, 6b in den Auspuffkrümmer 1 eingegossen ist.The invention relates to an exhaust manifold for multi-cylinder internal combustion engines. Exhaust manifolds of multi-cylinder internal combustion engines require length compensation because of the thermal expansion. Sliding seats are known, but they do not guarantee gas tightness in the long run. According to the invention, gas-tight compensators 3 are proposed. These form a structural unit with the exhaust manifold 1. It is particularly advantageous to design the compensator 3 as a U-shaped, circumferential protuberance 4 which, like the exhaust manifold 1, is produced using casting technology (FIG. 1). If a particularly flexible but absolutely gas-tight connection is required, the compensator 3 can be designed as a separate sheet metal part 5, which is cast into the exhaust manifold 1 on its end faces 6a, 6b.
Description
Die Erfindung bezieht sich auf Auspuffkrümmer gemäß dem Gattungsbegriff des Pa tentanspruches 1.The invention relates to exhaust manifolds according to the generic term of Pa claim 1.
Bei Auspuffkrümmern von mehrzylindrigen Brennkraftmaschinen kommt es zu Wär mespannungen, die zu Schäden infolge von Rußbildung führen können. Um die Wär mespannungen zu vermindern ist es bekannt, zwischen den Zylinderanschlüssen Schiebsitze vorzusehen. Eine derartige Bauweise führt aber zu Undichtigkeiten in die sen Schiebesitzen.Exhaust manifolds of multi-cylinder internal combustion engines generate heat voltages that can cause damage due to soot formation. To the war It is known to reduce measuring voltages between the cylinder connections Provide sliding seats. Such a construction leads to leaks in the sen sliding seats.
Der Erfindung liegt daher die Aufgabe zugrunde, die Wärmespannungen zu vermin dern, ohne daß die Dichtheit Schaden nimmt.The invention is therefore based on the object of minimizing the thermal stresses change without damaging the tightness.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspru ches 1.This object is achieved by the characterizing features of the patent claim ches 1.
Der an sich bekannte Kompensator erlaubt gewisse Dehnungen, gewährleistet aber vollkommene Gasdichtheit.The known compensator allows certain stretches, but ensures perfect gas tightness.
Eine vorteilhafte Ausbildung des Kompensators kann Anspruch 2 entnommen werden. Durch die in Gußausführung gehaltene Form des Kompensators wird eine preiswerte Serienfertigung ohne zusätzliche Bauteile und Bearbeitung erreicht.An advantageous embodiment of the compensator can be found in claim 2. Due to the shape of the compensator in cast design, it is an inexpensive one Series production achieved without additional components and processing.
Eine weitere vorteilhafte Ausbildung des Kompensators geht aus Anspruch 3 hervor. A further advantageous embodiment of the compensator emerges from claim 3.
Die in Blech ausgeführte Form des Kompensators erfüllt hohe Ansprüche an Elastizi tät.The shape of the expansion joint in sheet metal fulfills high demands on Elastizi act.
Ausführungsbeispiele der Erfindung sind an Hand von Zeichnungen dargestellt. Es zeigt:Embodiments of the invention are illustrated with the aid of drawings. It shows:
Fig. 1 einen Auspuffkrümmer mit Kompensator in Gußausführung, Fig. 1 with an exhaust manifold compensator in cast iron construction,
Fig. 2 einen Auspuffkrümmer mit Kompensator in Blechausführung. Fig. 2 shows an exhaust manifold with compensator in sheet metal.
Fig. 1 zeigt einen Ausschnitt aus einem Auspuffkrümmer 1 einer mehrzylindrigen Brennkraftmaschinen. Zwischen zwei benachbarten Zylinderanschlüssen 2a, 2b weist der Auspuffkrümmer 1 einen Kompensator 3 auf. Der Kompensator 3 ist im Längs schnitt gesehen als eine U-förmige, umlaufende Ausstülpung 4 ausgebildet, welche in Guß ausgeführt ist. Fig. 1 shows a section of an exhaust manifold 1 of a multi-cylinder internal combustion engine. The exhaust manifold 1 has a compensator 3 between two adjacent cylinder ports 2 a, 2 b. The compensator 3 is seen in longitudinal section as a U-shaped, circumferential protuberance 4 , which is designed in cast iron.
Bei Erwärmung werden die Wärmedehnungen zwischen den Zylinderanschlüssen 2a, 2b durch Verformung des Kompensators 3 aufgefangen, so daß sich die Wärmespan nungen in kalkulierbaren Grenzen halten. Der in Gußausführung gestaltete Kompensa tor 3 erfordert keine besondere Bearbeitung und ist absolut gasdicht.Upon heating, the thermal expansions between the cylinder ports 2 are a, 2 b absorbed by deformation of the compensator 3, so that the thermal tension hold voltages in predictable limits. The compensated gate 3 designed in cast iron requires no special processing and is absolutely gas-tight.
Eine weitere Ausführungsform des Kompensators 3 ist in Fig. 2 dargestellt. Der Kom pensator 3 ist hier als ein Blechteil 5 ausgeführt. Dieses ist im Längsschnitt gesehen wiederum als eine U-förmig umlaufende Ausstülpung ausgebildet. An seinen Stirnsei ten 6a, 6b ist das Blechteil 5 in den Auspuffkrümmer 1 eingegossen. Diese Ausführung ist besonders elastisch und baut Wärmespannungen zwischen den benachbarten Zylin deranschlüssen 2a, 2b ab. Die Gasdichtheit ist auch hier voll gewährleistet.Another embodiment of the compensator 3 is shown in FIG. 2. The Kom pensator 3 is designed here as a sheet metal part 5 . Seen in longitudinal section, this is again designed as a U-shaped circumferential protuberance. At its Stirnsei th 6 a, 6 b, the sheet metal part 5 is poured into the exhaust manifold 1 . This version is particularly elastic and reduces thermal stresses between the neighboring cylinder connections 2 a, 2 b. The gas tightness is also fully guaranteed here.
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999118988 DE19918988A1 (en) | 1999-04-27 | 1999-04-27 | Exhaust manifold for multi-cylinder internal combustion engine |
EP99125725A EP1048829A1 (en) | 1999-04-27 | 1999-12-23 | Exhaust manifold for multicylinder internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999118988 DE19918988A1 (en) | 1999-04-27 | 1999-04-27 | Exhaust manifold for multi-cylinder internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19918988A1 true DE19918988A1 (en) | 2000-11-02 |
Family
ID=7905943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999118988 Withdrawn DE19918988A1 (en) | 1999-04-27 | 1999-04-27 | Exhaust manifold for multi-cylinder internal combustion engine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1048829A1 (en) |
DE (1) | DE19918988A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326260C2 (en) * | 1983-07-21 | 1987-10-01 | Witzenmann Gmbh, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim, De | |
DE19514020A1 (en) * | 1995-04-13 | 1996-10-17 | Daimler Benz Ag | Exhaust manifold, in particular for an internal combustion engine in a motor vehicle, and method for its production |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1324420A (en) * | 1962-03-09 | 1963-04-19 | Assemblies formed by elements of piping or the like and bellows or expansion joints, assembled by bi-metallic connection | |
DE3427998A1 (en) * | 1984-07-28 | 1986-01-30 | Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim | EXHAUST PIPE FOR MOTOR VEHICLE ENGINES |
JPH05240039A (en) * | 1992-03-02 | 1993-09-17 | Eagle Ind Co Ltd | Exhaust manifold for engine |
DE29508560U1 (en) * | 1995-05-23 | 1995-08-03 | Klöckner-Humboldt-Deutz AG, 51149 Köln | Cast exhaust manifold |
US5784881A (en) * | 1996-01-11 | 1998-07-28 | Hitachi Metals, Ltd. | Multi-part exhaust manifold assembly with welded connections |
-
1999
- 1999-04-27 DE DE1999118988 patent/DE19918988A1/en not_active Withdrawn
- 1999-12-23 EP EP99125725A patent/EP1048829A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3326260C2 (en) * | 1983-07-21 | 1987-10-01 | Witzenmann Gmbh, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim, De | |
DE19514020A1 (en) * | 1995-04-13 | 1996-10-17 | Daimler Benz Ag | Exhaust manifold, in particular for an internal combustion engine in a motor vehicle, and method for its production |
Also Published As
Publication number | Publication date |
---|---|
EP1048829A1 (en) | 2000-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |