EP2287452B1 - Exhaust system for an internal combustion engine - Google Patents

Exhaust system for an internal combustion engine Download PDF

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Publication number
EP2287452B1
EP2287452B1 EP10005111A EP10005111A EP2287452B1 EP 2287452 B1 EP2287452 B1 EP 2287452B1 EP 10005111 A EP10005111 A EP 10005111A EP 10005111 A EP10005111 A EP 10005111A EP 2287452 B1 EP2287452 B1 EP 2287452B1
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EP
European Patent Office
Prior art keywords
exhaust
line
connecting line
exhaust gas
tract
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EP10005111A
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German (de)
French (fr)
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EP2287452A1 (en
Inventor
Thomas Laube
Erwin Rutschmann
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication of EP2287452A1 publication Critical patent/EP2287452A1/en
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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
    • F01N13/04—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 two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/166—Silencing apparatus characterised by method of silencing by using movable parts for changing gas flow path through the silencer or for adjusting the dimensions of a chamber or a pipe
    • 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
    • F01N13/02—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 two or more separate silencers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • 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
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device

Definitions

  • the invention relates to an exhaust system of an internal combustion engine according to the preamble of claim 1.
  • each exhaust systems of an internal combustion engine are known, wherein a first cylinder group of the internal combustion engine is associated with a first exhaust line of the exhaust system and a second cylinder group of the internal combustion engine, a second exhaust line of the exhaust system.
  • Each exhaust system of the exhaust system comprises an exhaust gas purification device, namely a catalyst, and two downstream of the exhaust gas purification device muffler, namely one of the respective exhaust gas purification device downstream first muffler and the respective first muffler downstream second muffler.
  • the two exhaust gas lines of the exhaust system are connected to each other via a connecting line, which provides a sound transmission device, the connecting line and thus the sound transmission device in the flow direction of the exhaust gas downstream of the exhaust gas purification devices and upstream of the first muffler engages the exhaust strands and the same with each other, depending from the position of one of the connecting line and thus sound transmission associated flap.
  • a connecting line which provides a sound transmission device, the connecting line and thus the sound transmission device in the flow direction of the exhaust gas downstream of the exhaust gas purification devices and upstream of the first muffler engages the exhaust strands and the same with each other, depending from the position of one of the connecting line and thus sound transmission associated flap.
  • the present invention has the object to provide a novel exhaust system of an internal combustion engine, this task is by an exhaust system of an internal combustion engine according to claim or claim 2, according to the invention branches off from the exhaust lines coupling coupling line from a common bypass line.
  • Fig. 1 shows a section of an inventive exhaust system 10 of an internal combustion engine according to a first embodiment of the invention, wherein the exhaust system 10 of the Fig. 1 two exhaust gas lines 11, 12, namely a not shown, a first cylinder group of the internal combustion engine associated first exhaust line 11 and a likewise not shown, second cylinder group of the internal combustion engine associated second exhaust line 12.
  • the flow direction of the exhaust gas through the exhaust lines 11 and 12 is visualized by arrows 13 and 14.
  • the two exhaust lines 11 and 12 of in Fig. 1 shown exhaust system 10 are coupled via a connecting line 15 with each other.
  • the connecting line 15 is coupled via a first connection point 16 to the first exhaust gas line 11 and via a second binding point 17 to the second exhaust line 12.
  • Exhaust gas can be transferred between the two exhaust gas lines 11 and 12 via the connecting line 15.
  • Exhaust gas, which is diverted starting from the first exhaust line 11 via the connecting line 15 of the same, and exhaust gas, which is branched starting from the second exhaust line 12 via the connecting line 15 from the same, can be removed via the common bypass line 18, wherein the flow through the bypass line 18th is visualized by the exhaust gas by an arrow 19.
  • the common bypass line 18 branches off in a connection point 20 from the connecting line 15.
  • the connecting line 15 a total of two shut-off devices 21 and 22, namely a first shut-off device 21 between the connection point 16 of the connecting line 15 to the first exhaust line 11 and the connection point 20 of the common bypass line 18 to the connecting line 15, and a second shut-off device 22 between the connection point 17th the connection line 15 to the second exhaust line 12 and the connection point 20 of the common bypass line 18 to the connecting line 15.
  • the shut-off devices 21 and 22 can be closed or opened uniformly or non-uniformly.
  • shut-off devices 21 and 22 in which case exhaust gas from both exhaust lines 11 and 12 passes via the connecting line 15 into the common bypass line 18.
  • Fig. 1 is the connecting line 15 to the first exhaust line 11 and the second exhaust line 12 respectively in the region of an exhaust pipe section of the respective exhaust line 11 and 12 coupled to the same.
  • the connection points 16 and 17 of the connecting line 15 to the exhaust gas lines 11 and 12 are therefore in an exhaust pipe section of the same.
  • Fig. 1 can be seen that seen in the flow direction of the exhaust both the exhaust line 13 and the exhaust line 14 downstream of the respective connection point 16 and 17 of the connecting line 15 to the respective exhaust line 11 and 12, a module 23 and 24 of the respective exhaust line 11 and May be associated with 12, wherein it may be the assemblies 23 and 24 to exhaust purification devices or catalysts or even silencer.
  • Fig. 1 opens the common bypass line 18 seen in the flow direction of the exhaust gas downstream of the connecting line 15 to the outside.
  • Fig. 2 shows an embodiment of an exhaust system 25, wherein in contrast to the embodiment of Fig. 1 the common bypass line 18 downstream of the connecting line 15 does not open directly into the open air, but rather into an assembly 25 which is assigned to the common bypass line 18, wherein the assembly 26 may be an exhaust gas purification device or a catalyst or even a silencer ,
  • the exhaust system 25 of the Fig. 2 with the exhaust system 10 of the Fig. 1 Therefore, to avoid unnecessary repetition for the same components same reference numerals are used and to the comments on the embodiment of Fig. 1 is referenced.
  • Also for the following embodiments of the Fig. 3 to 8 are used to avoid unnecessary repetition for the same components same reference numerals as in the embodiment of Fig. 1 ,
  • Fig. 3 shows a further embodiment of an exhaust system 27 according to the invention, in which the common bypass line 18 branches in the flow direction (arrow 19) of the exhaust downstream of the connecting line 15 into two partial bypass lines 28 and 29, wherein the partial bypass line 28 the exhaust line 11 and the partial bypass line 29 the exhaust line 12 can be attributed.
  • the subbypass passages 28 and 29 can also be assigned to further subassemblies 31 and 32, wherein the subassemblies 31 and 32 can be exhaust gas purification devices or catalysts or mufflers.
  • each partial bypass line 28 and 29 is assigned an individual exhaust-gas cleaning device 31 or 32, so that in the flow direction of the exhaust gas, on the one hand, each partial bypass line 28 and 29 downstream of the branching point 30 of the common bypass line 18 into the partial bypass lines 28, 29 into a separate exhaust gas purification device 31 and 32 and on the other hand, each exhaust line 11 and 12 downstream of the connection points 16 and 17 of the connecting line 15 to the respective exhaust line 11 and 12 opens into a separate exhaust gas purification device 23 and 24 respectively.
  • each partial bypass line is associated with an individual silencer 31 or 32, so seen in the flow direction of the exhaust gas, on the one hand, each partial bypass line 28 and 29 downstream of the Branching point 30 of the common bypass line 18 in the partial bypass lines 28 and 29 into a separate muffler 31 and 32 and on the other hand, each exhaust line 11 and 12 downstream of the connection points 16 and 17 of the connecting line 15 to the exhaust gas lines 11 and 12 in a separate muffler 23 and 24 opens ,
  • Fig. 4 shows a further embodiment of an exhaust system 33 according to the invention
  • the common bypass line 18 in turn branches downstream of the connecting line 15 in two partial bypass lines 28 and 29, wherein, however, in the embodiment of Fig. 4
  • each partial bypass line 28 and 29 opens into an exhaust gas purification device 23 and 24, in the flow direction of the exhaust gas seen the exhaust line 11 and 12 downstream of the connection point 16 and 17 of the connecting line 15 opens to the respective exhaust line 11 and 12 respectively.
  • each partial bypass line 28 and 29 opens into a silencer 23 and 24, in which the respective exhaust line 11 and 12 downstream of the respective connection point 16 and 17 of the connecting line 15 to the respective exhaust line 11 and 12 opens.
  • the embodiments of the Fig. 1 to 4 is common that the connecting line 15 of the exhaust systems to the exhaust lines 11 and 12 is in each case in the region of an exhaust pipe section of the respective exhaust line 11 and 12 coupled to the same.
  • FIG. 5 shows Fig. 5 an embodiment of an exhaust system 34, in which the connecting line 15 is coupled to the first exhaust line 11 and the second exhaust line 12 respectively in the region of the exhaust line 11 and 12 associated assembly 35 and 36 to the respective exhaust line 11 and 12, wherein it may be the assemblies 35 and 36 to exhaust gas purification equipment or catalysts or even silencer.
  • the connection points 16, 17 are not assigned to an exhaust pipe section of the respective exhaust gas line 11 or 12, but rather to an exhaust gas purification device or a silencer of the respective exhaust gas line 11 or 12.
  • the exemplary embodiment of FIG Fig. 5 with the embodiment of Fig. 1 match.
  • the coupling of the connecting line 15 with the exhaust gas lines 11 and 12 in the region of an exhaust gas purification device or a silencer can also in the embodiments of the Fig. 2 to 4 be used.
  • Fig. 6 shows a further embodiment of an exhaust system 37 according to the invention, wherein the exhaust system 37 of the Fig. 6 essentially the exhaust system 33 of the Fig. 4 equivalent.
  • the exhaust system 37 of Fig. 6 differs from the exhaust system 33 of the Fig. 3 in that in the exhaust system 37 of the Fig. 6 the connection line 15 are not assigned two shut-off, but in the embodiment of the Fig. 6 the connecting line 15 exclusively associated with a shut-off device 22.
  • the common bypass line 18 is assigned a shut-off device 38.
  • the common bypass line 18 associated shut-off device 38 can be closed, so that when the connecting line 15 associated shut-off device 22 is opened, exhaust gas is exchanged exclusively between the exhaust lines 11 and 12, but without exhaust gas through the common bypass line 18 and thus the partial bypass lines 28 and 29 flows.
  • the connecting line 15 associated shut-off device 22 between the connection point the common bypass line 18 connected to the connecting line 15 and the connection point 17 of the connecting line 15 to the second exhaust line 12.
  • shut-off devices 22 and 38 in the connecting line 15 and in the common bypass line 18 can also in the embodiments of the Fig. 1 to 5 as well as 6 and 7 are used.
  • Fig. 7 shows a further embodiment of an exhaust system 39 according to the invention, wherein in the embodiment of the Fig. 7 the features of the embodiments of Fig. 4 and 5 combined with each other.
  • the connection points 16 and 17 of the connecting line 15 to the exhaust gas lines 11 and 12 again not exhaust pipe sections, but an exhaust gas purification device or a silencer 35 or 36 assigned.
  • the common bypass line 18 is branched into partial bypass lines 28 and 29 which are in the same Exhaust gas purification device or the same silencer 23 and 24 open, as the exhaust gas lines 11, 12 downstream of the connection points 16, 17th
  • FIG Fig. 8 A further exemplary embodiment of an exhaust system 40 according to the invention is shown in FIG Fig. 8 shown, wherein the embodiment of the Fig. 8 from the embodiment of Fig. 7 differs in that the partial bypass lines 28 and 29 open into the same assembly 23 and 24 and are passed through the same assemblies 23 and 24, from which the connecting line 15 branches off.

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

Description

Die Erfindung betrifft eine Abgasanlage einer Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to an exhaust system of an internal combustion engine according to the preamble of claim 1.

Aus der DE 102 44 021 A1 sowie der DE 10 2007 026 812 A1 sind jeweils Abgasanlagen einer Brennkraftmaschine bekannt, wobei einer ersten Zylindergruppe der Brennkraftmaschine ein erster Abgasstrang der Abgasanlage und einer zweiten Zylindergruppe der Brennkraftmaschine ein zweiter Abgasstrang der Abgasanlage zugeordnet ist. Nach der DE 102 44 021 A1 umfasst jeder Abgasstrang der Abgasanlage eine Abgasreinigungseinrichtung, nämlich einen Katalysator, sowie zwei der Abgasreinigungseinrichtung nachgeordnete Schalldämpfer, nämlich einen der jeweiligen Abgasreinigungseinrichtung nachgeordneten ersten Schalldämpfer und einen dem jeweiligen ersten Schalldämpfer nachgeordneten zweiten Schalldämpfer. Die beiden Abgasstränge der Abgasanlage sind über eine Verbindungsleitung, die eine Schallübertragungseinrichtung bereitstellt, miteinander verbunden, wobei die Verbindungsleitung und damit die Schallübertragungseinrichtung in Strömungsrichtung des Abgases gesehen stromabwärts der Abgasreinigungseinrichtungen und stromaufwärts der ersten Schalldämpfer an den Abgassträngen angreift und dieselben miteinander verbindet, und zwar abhängig von der Stellung einer der Verbindungsleitung und damit Schallübertragungseinrichtung zugeordneten Klappe. Nach der DE 10 2007 026 812 A1 sind zwei Verbindungsleitungen bzw. Schallübertragungseinrichtungen vorhanden, über welche die Abgasstränge miteinander gekoppelt sind.From the DE 102 44 021 A1 as well as the DE 10 2007 026 812 A1 each exhaust systems of an internal combustion engine are known, wherein a first cylinder group of the internal combustion engine is associated with a first exhaust line of the exhaust system and a second cylinder group of the internal combustion engine, a second exhaust line of the exhaust system. After DE 102 44 021 A1 Each exhaust system of the exhaust system comprises an exhaust gas purification device, namely a catalyst, and two downstream of the exhaust gas purification device muffler, namely one of the respective exhaust gas purification device downstream first muffler and the respective first muffler downstream second muffler. The two exhaust gas lines of the exhaust system are connected to each other via a connecting line, which provides a sound transmission device, the connecting line and thus the sound transmission device in the flow direction of the exhaust gas downstream of the exhaust gas purification devices and upstream of the first muffler engages the exhaust strands and the same with each other, depending from the position of one of the connecting line and thus sound transmission associated flap. After DE 10 2007 026 812 A1 There are two connecting lines or sound transmission devices, via which the exhaust gas lines are coupled together.

Aus der US 5,144,799 ist eine Abgasanlage für eine Brennkraftmaschine bekannt, welche aus zwei Abgassträngen gebildet ist, zwischen denen zwei Verbindungsleitungen angeordnet sind und sich kreuzen.From the US 5,144,799 is known an exhaust system for an internal combustion engine, which is formed from two exhaust gas lines, between which two connecting lines are arranged and intersect.

Hiervon ausgehend liegt der hier vorliegenden Erfindung die Aufgabe zugrunde, eine neuartige Abgasanlage einer Brennkraftmaschine zu schaffen, Diese Aufgabe wird durch eine Abgasanlage einer Brennkraftmaschine gemäß Anspruch oder Anspruch 2 gelöst, Erfindungsgemäß zweigt von der die Abgasstränge koppelnden Verbindungsleitung eine gemeinsame Bypassleitung ab.On this basis, the present invention has the object to provide a novel exhaust system of an internal combustion engine, this task is by an exhaust system of an internal combustion engine according to claim or claim 2, according to the invention branches off from the exhaust lines coupling coupling line from a common bypass line.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
eine schematisierte Darstellung eines ersten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage;
Fig. 2:
eine schematisierte Darstellung eines zweiten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage;
Fig. 3:
eine schematisierte Darstellung eines dritten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage;
Fig. 4:
eine schematisierte Darstellung eines vierten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage;
Fig. 5:
eine schematisierte Darstellung eines fünften Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage;
Fig. 6:
eine schematisierte Darstellung eines sechsten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage;
Fig. 7:
eine schematisierte Darstellung eines siebten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage; und
Fig. 8:
eine schematisierte Darstellung eines achten Ausführungsbeispiels einer erfindungsgemäßen Abgasanlage.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
Fig. 1:
a schematic representation of a first embodiment of an exhaust system according to the invention;
Fig. 2:
a schematic representation of a second embodiment of an exhaust system according to the invention;
3:
a schematic representation of a third embodiment of an exhaust system according to the invention;
4:
a schematic representation of a fourth embodiment of an exhaust system according to the invention;
Fig. 5:
a schematic representation of a fifth embodiment of an exhaust system according to the invention;
Fig. 6:
a schematic representation of a sixth embodiment of an exhaust system according to the invention;
Fig. 7:
a schematic representation of a seventh embodiment of an exhaust system according to the invention; and
Fig. 8:
a schematic representation of an eighth embodiment of an exhaust system according to the invention.

Fig. 1 zeigt einen Ausschnitt aus einer erfindungsgemäßen Abgasanlage 10 einer Brennkraftmaschine nach einem ersten Ausführungsbeispiel der Erfindung, wobei die Abgasanlage 10 der Fig. 1 zwei Abgasstränge 11, 12 umfasst, nämlich einen einer nicht-gezeigten, ersten Zylindergruppe der Brennkraftmaschine zugeordneten, ersten Abgasstrang 11 und einen einer ebenfalls nicht-gezeigten, zweiten Zylindergruppe der Brennkraftmaschine zugeordneten, zweiten Abgasstrang 12. Die Strömungsrichtung des Abgases durch die Abgasstränge 11 und 12 ist durch Pfeile 13 und 14 visualisiert. Fig. 1 shows a section of an inventive exhaust system 10 of an internal combustion engine according to a first embodiment of the invention, wherein the exhaust system 10 of the Fig. 1 two exhaust gas lines 11, 12, namely a not shown, a first cylinder group of the internal combustion engine associated first exhaust line 11 and a likewise not shown, second cylinder group of the internal combustion engine associated second exhaust line 12. The flow direction of the exhaust gas through the exhaust lines 11 and 12 is visualized by arrows 13 and 14.

Die beiden Abgasstränge 11 und 12 der in Fig. 1 gezeigten Abgasanlage 10 sind über eine Verbindungsleitung 15 miteinander gekoppelt. Die Verbindungsleitung 15 ist über eine erste Anbindungsstelle 16 an den ersten Abgasstrang 11 und über eine zweite Abbindungsstelle 17 an den zweiten Abgasstrang 12 gekoppelt. Über die Verbindungsleitung 15 kann Abgas zwischen den beiden Abgassträngen 11 und 12 überführt werden.The two exhaust lines 11 and 12 of in Fig. 1 shown exhaust system 10 are coupled via a connecting line 15 with each other. The connecting line 15 is coupled via a first connection point 16 to the first exhaust gas line 11 and via a second binding point 17 to the second exhaust line 12. Exhaust gas can be transferred between the two exhaust gas lines 11 and 12 via the connecting line 15.

Erfindungsgemäß zweigt von der die Abgasstränge 11 und 12 koppelnden Verbindungsleitung 15 eine gemeinsame Bypassleitung 18 ab. Abgas, welches ausgehend vom ersten Abgasstrang 11 über die Verbindungsleitung 15 von demselben abgezweigt wird, sowie Abgas, welches ausgehend vom zweiten Abgasstrang 12 über die Verbindungsleitung 15 von demselben abgezweigt wird, kann über die gemeinsame Bypassleitung 18 abgeführt werden, wobei die Durchströmung der Bypassleitung 18 vom Abgas durch einen Pfeil 19 visualisiert ist.According to the invention, the connecting line 15, which couples the exhaust gas lines 11 and 12, branches off a common bypass line 18. Exhaust gas, which is diverted starting from the first exhaust line 11 via the connecting line 15 of the same, and exhaust gas, which is branched starting from the second exhaust line 12 via the connecting line 15 from the same, can be removed via the common bypass line 18, wherein the flow through the bypass line 18th is visualized by the exhaust gas by an arrow 19.

Gemäß Fig. 1 zweigt die gemeinsame Bypassleitung 18 in einer Anbindungsstelle 20 von der Verbindungsleitung 15 ab. Dabei sind gemäß Fig. 1 der Verbindungsleitung 15 insgesamt zwei Absperreinrichtungen 21 und 22 zugeordnet, nämlich eine erste Absperreinrichtung 21 zwischen der Anbindungsstelle 16 der Verbindungsleitung 15 an den ersten Abgasstrang 11 und der Anbindungsstelle 20 der gemeinsamen Bypassleitung 18 an die Verbindungsleitung 15, und eine zweite Absperreinrichtung 22 zwischen der Anbindungsstelle 17 der Verbindungsleitung 15 an den zweiten Abgasstrang 12 und der Anbindungsstelle 20 der gemeinsamen Bypassleitung 18 an die Verbindungsleitung 15. Die Absperreinrichtungen 21 und 22 können dabei gleichförmig oder ungleichförmig geschlossen bzw. geöffnet werden. So ist es möglich, beide Absperreinrichtungen 21 und 22 zu öffnen, wobei dann von beiden Abgassträngen 11 und 12 Abgas über die Verbindungsleitung 15 in die gemeinsame Bypassleitung 18 gelangt. Ebenso ist es möglich, ausschließlich eine der beiden Absperreinrichtungen 21, 22 zu öffnen und die jeweils anderen Absperreinrichtung 22, 21 geschlossen zu halten, wobei dann ausschließlich von einem Abgasstrang 11 bzw. 12 Abgas über die Verbindungsleitung 15 in die gemeinsame Bypassleitung 18 gelangt.According to Fig. 1 the common bypass line 18 branches off in a connection point 20 from the connecting line 15. Here are according to Fig. 1 the connecting line 15 a total of two shut-off devices 21 and 22, namely a first shut-off device 21 between the connection point 16 of the connecting line 15 to the first exhaust line 11 and the connection point 20 of the common bypass line 18 to the connecting line 15, and a second shut-off device 22 between the connection point 17th the connection line 15 to the second exhaust line 12 and the connection point 20 of the common bypass line 18 to the connecting line 15. The shut-off devices 21 and 22 can be closed or opened uniformly or non-uniformly. Thus, it is possible to open both shut-off devices 21 and 22, in which case exhaust gas from both exhaust lines 11 and 12 passes via the connecting line 15 into the common bypass line 18. Likewise, it is possible to open only one of the two shut-off devices 21, 22 and to keep the respective other shut-off device 22, 21 closed, in which case exhaust gas only passes from the exhaust line 11 or 12 via the connecting line 15 into the common bypass line 18.

Im Ausführungsbeispiel der Fig. 1 ist die Verbindungsleitung 15 an den ersten Abgasstrang 11 sowie den zweiten Abgasstrang 12 jeweils im Bereich eines Abgasrohrabschnitts des jeweiligen Abgasstrangs 11 bzw. 12 an denselben gekoppelt. Die Anbindungsstellen 16 und 17 der Verbindungsleitung 15 an die Abgasstränge 11 und 12 befinden sich demnach in einem Abgasrohrabschnitt derselben.In the embodiment of Fig. 1 is the connecting line 15 to the first exhaust line 11 and the second exhaust line 12 respectively in the region of an exhaust pipe section of the respective exhaust line 11 and 12 coupled to the same. The connection points 16 and 17 of the connecting line 15 to the exhaust gas lines 11 and 12 are therefore in an exhaust pipe section of the same.

Fig. 1 kann entnommen werden, dass in Strömungsrichtung des Abgases gesehen sowohl dem Abgasstrang 13 als auch dem Abgasstrang 14 stromabwärts der jeweiligen Anbindungsstelle 16 bzw. 17 der Verbindungsleitung 15 an den jeweiligen Abgasstrang 11 bzw. 12 eine Baugruppe 23 bzw. 24 des jeweiligen Abgasstrangs 11 bzw. 12 zugeordnet sein kann, wobei es sich bei den Baugruppen 23 und 24 um Abgasreinigungseinrichtungen bzw. Katalysatoren oder auch um Schalldämpfer handeln kann. Fig. 1 can be seen that seen in the flow direction of the exhaust both the exhaust line 13 and the exhaust line 14 downstream of the respective connection point 16 and 17 of the connecting line 15 to the respective exhaust line 11 and 12, a module 23 and 24 of the respective exhaust line 11 and May be associated with 12, wherein it may be the assemblies 23 and 24 to exhaust purification devices or catalysts or even silencer.

Im Ausführungsbeispiel der Fig. 1 mündet die gemeinsame Bypassleitung 18 in Strömungsrichtung des Abgases gesehen stromabwärts der Verbindungsleitung 15 ins Freie.In the embodiment of Fig. 1 opens the common bypass line 18 seen in the flow direction of the exhaust gas downstream of the connecting line 15 to the outside.

Fig. 2 zeigt ein Ausführungsbeispiel einer Abgasanlage 25, bei welcher im Unterschied zum Ausführungsbeispiel der Fig. 1 die gemeinsame Bypassleitung 18 stromabwärts der Verbindungsleitung 15 nicht unmittelbar ins Freie mündet, sondern vielmehr in eine Baugruppe 25, die der gemeinsamen Bypassleitung 18 zugeordnet ist, wobei es sich bei der Baugruppe 26 um eine Abgasreinigungseinrichtung bzw. einen Katalysator oder auch um einen Schalldämpfer handeln kann. Hinsichtlich der übrigen Details stimmt die Abgasanlage 25 der Fig. 2 mit der Abgasanlage 10 der Fig. 1 überein, weshalb zur Vermeidung unnötiger Wiederholungen für gleiche Baugruppen gleiche Bezugsziffern verwendet werden und auf die Ausführungen zum Ausführungsbeispiel der Fig. 1 verwiesen wird. Auch für die nachfolgenden Ausführungsbeispiele der Fig. 3 bis 8 werden zur Vermeidung unnötiger Wiederholungen für gleiche Baugruppen gleiche Bezugsziffern verwendet wie im Ausführungsbeispiel der Fig. 1. Fig. 2 shows an embodiment of an exhaust system 25, wherein in contrast to the embodiment of Fig. 1 the common bypass line 18 downstream of the connecting line 15 does not open directly into the open air, but rather into an assembly 25 which is assigned to the common bypass line 18, wherein the assembly 26 may be an exhaust gas purification device or a catalyst or even a silencer , With regard to the remaining details, the exhaust system 25 of the Fig. 2 with the exhaust system 10 of the Fig. 1 Therefore, to avoid unnecessary repetition for the same components same reference numerals are used and to the comments on the embodiment of Fig. 1 is referenced. Also for the following embodiments of the Fig. 3 to 8 are used to avoid unnecessary repetition for the same components same reference numerals as in the embodiment of Fig. 1 ,

Fig. 3 zeigt ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Abgasanlage 27, bei welcher sich die gemeinsame Bypassleitung 18 in Strömungsrichtung (Pfeil 19) des Abgases gesehen stromabwärts der Verbindungsleitung 15 in zwei Teilbypassleitungen 28 und 29 verzweigt, wobei die Teilbypassleitung 28 dem Abgasstrang 11 und die Teilbypassleitung 29 dem Abgasstrang 12 zugerechnet werden kann. Fig. 3 shows a further embodiment of an exhaust system 27 according to the invention, in which the common bypass line 18 branches in the flow direction (arrow 19) of the exhaust downstream of the connecting line 15 into two partial bypass lines 28 and 29, wherein the partial bypass line 28 the exhaust line 11 and the partial bypass line 29 the exhaust line 12 can be attributed.

Stromabwärts einer Verzweigungsstelle 30 der gemeinsamen Bypassleitung 18 in die Teilbypassleitungen 28 und 29 können die Teilbypassleitungen unmittelbar ins Freie münden. Wie Fig. 3 zeigt, können den Teilbypassleitungen 28 und 29 jedoch auch weitere Baugruppen 31 bzw. 32 zugeordnet sein, wobei es sich bei den Baugruppen 31 bzw. 32 um Abgasreinigungseinrichtungen bzw. Katalysatoren oder um Schalldämpfer handeln kann.Downstream of a branch point 30 of the common bypass line 18 in the partial bypass lines 28 and 29, the partial bypass lines can open directly into the open. As Fig. 3 However, the subbypass passages 28 and 29 can also be assigned to further subassemblies 31 and 32, wherein the subassemblies 31 and 32 can be exhaust gas purification devices or catalysts or mufflers.

So ist es im Ausführungsbeispiel der Fig. 3 demnach möglich, dass jeder Teilbypassleitung 28 und 29 eine individuelle Abgasreinigungseinrichtung 31 bzw. 32 zugeordnet ist, sodass in Strömungsrichtung des Abgases gesehen, einerseits jede Teilbypassleitung 28 und 29 stromabwärts der Verzweigungsstelle 30 der gemeinsamen Bypassleitung 18 in die Teilbypassleitungen 28, 29 in eine separate Abgasreinigungseinrichtung 31 und 32 und andererseits jeder Abgasstrang 11 und 12 stromabwärts der Anbindungsstellen 16 und 17 der Verbindungsleitung 15 an den jeweiligen Abgasstrang 11 bzw. 12 in eine separate Abgasreinigungseinrichtung 23 bzw. 24 mündet.So it is in the embodiment of Fig. 3 Accordingly, it is possible for each partial bypass line 28 and 29 to be assigned an individual exhaust-gas cleaning device 31 or 32, so that in the flow direction of the exhaust gas, on the one hand, each partial bypass line 28 and 29 downstream of the branching point 30 of the common bypass line 18 into the partial bypass lines 28, 29 into a separate exhaust gas purification device 31 and 32 and on the other hand, each exhaust line 11 and 12 downstream of the connection points 16 and 17 of the connecting line 15 to the respective exhaust line 11 and 12 opens into a separate exhaust gas purification device 23 and 24 respectively.

Ebenso ist es im Ausführungsbeispiel der Fig. 3 möglich, dass jeder Teilbypassleitung ein individueller Schalldämpfer 31 bzw. 32 zugeordnet ist, sodass in Strömungsrichtung des Abgases gesehen, einerseits jede Teilbypassleitung 28 und 29 stromabwärts der Verzweigungsstelle 30 der gemeinsamen Bypassleitung 18 in die Teilbypassleitungen 28 und 29 in einen separaten Schalldämpfer 31 bzw. 32 und andererseits jeder Abgasstrang 11 und 12 stromabwärts der Anbindungsstellen 16 und 17 der Verbindungsleitung 15 an die Abgasstränge 11 und 12 in einem separaten Schalldämpfer 23 und 24 mündet.Likewise, it is in the embodiment of Fig. 3 possible that each partial bypass line is associated with an individual silencer 31 or 32, so seen in the flow direction of the exhaust gas, on the one hand, each partial bypass line 28 and 29 downstream of the Branching point 30 of the common bypass line 18 in the partial bypass lines 28 and 29 into a separate muffler 31 and 32 and on the other hand, each exhaust line 11 and 12 downstream of the connection points 16 and 17 of the connecting line 15 to the exhaust gas lines 11 and 12 in a separate muffler 23 and 24 opens ,

Fig. 4 zeigt ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Abgasanlage 33, deren gemeinsame Bypassleitung 18 wiederum stromabwärts der Verbindungsleitung 15 in zwei Teilbypassleitungen 28 und 29 verzweigt, wobei jedoch im Ausführungsbeispiel der Fig. 4 jede Teilbypassleitung 28 und 29 stromabwärts der Verzweigungsstelle 30 in dieselbe Baugruppe 23 bzw. 24 mündet wie der Abgasstrang 11 bzw. 12, dem die jeweilige Teilbypassleitung 28 bzw. 29 zugerechnet werden kann. Fig. 4 shows a further embodiment of an exhaust system 33 according to the invention, the common bypass line 18 in turn branches downstream of the connecting line 15 in two partial bypass lines 28 and 29, wherein, however, in the embodiment of Fig. 4 Each Teilbypassleitung 28 and 29 downstream of the branch point 30 in the same module 23 and 24 opens as the exhaust line 11 and 12, the respective partial bypass line 28 and 29 can be attributed.

So ist es im Ausführungsbeispiel der Fig. 4 möglich, dass jede Teilbypassleitung 28 und 29 in eine Abgasreinigungseinrichtung 23 bzw. 24 mündet, in die in Strömungsrichtung des Abgases gesehen der Abgasstrang 11 bzw. 12 stromabwärts der Anbindungsstelle 16 bzw. 17 der Verbindungsleitung 15 an den jeweiligen Abgasstrang 11 bzw. 12 mündet.So it is in the embodiment of Fig. 4 possible that each partial bypass line 28 and 29 opens into an exhaust gas purification device 23 and 24, in the flow direction of the exhaust gas seen the exhaust line 11 and 12 downstream of the connection point 16 and 17 of the connecting line 15 opens to the respective exhaust line 11 and 12 respectively.

Ebenso ist es im Ausführungsbeispiel der Fig. 4 möglich, dass jede Teilbypassleitung 28 und 29 in einen Schalldämpfer 23 bzw. 24 mündet, in den auch der jeweilige Abgasstrang 11 bzw. 12 stromabwärts der jeweiligen Anbindungsstelle 16 bzw. 17 der Verbindungsleitung 15 an den jeweiligen Abgasstrang 11 bzw. 12 mündet.Likewise, it is in the embodiment of Fig. 4 possible that each partial bypass line 28 and 29 opens into a silencer 23 and 24, in which the respective exhaust line 11 and 12 downstream of the respective connection point 16 and 17 of the connecting line 15 to the respective exhaust line 11 and 12 opens.

Den Ausführungsbeispielen der Fig. 1 bis 4 ist gemeinsam, dass die Verbindungsleitung 15 der Abgasanlagen an die Abgasstränge 11 und 12 jeweils im Bereich eines Abgasrohrabschnitts des jeweiligen Abgasstrangs 11 bzw. 12 an denselben gekoppelt ist. In den Ausführungsbeispielen der Fig. 1 bis 4 sind demnach die Anbindungsstellen 16 und 17 der Verbindungsleitung 15 Abgasrohrabschnitten des jeweiligen Abgasstrangs 11 bzw. 12 der jeweiligen Abgasanlage zugeordnet.The embodiments of the Fig. 1 to 4 is common that the connecting line 15 of the exhaust systems to the exhaust lines 11 and 12 is in each case in the region of an exhaust pipe section of the respective exhaust line 11 and 12 coupled to the same. In the embodiments of the Fig. 1 to 4 are therefore the connection points 16 and 17 of the connecting line 15 exhaust pipe sections of the respective exhaust line 11 and 12 associated with the respective exhaust system.

Demgegenüber zeigt Fig. 5 ein Ausführungsbeispiel einer Abgasanlage 34, bei welcher die Verbindungsleitung 15 an den ersten Abgasstrang 11 und an den zweiten Abgasstrang 12 jeweils im Bereich einer dem Abgasstrang 11 bzw. 12 zugeordneten Baugruppe 35 bzw. 36 an den jeweiligen Abgasstrang 11 bzw. 12 gekoppelt ist, wobei es sich bei den Baugruppen 35 und 36 um Abgasreinigungseinrichtungen bzw. Katalysatoren oder auch um Schalldämpfer handeln kann. Im Ausführungsbeispiel der Fig. 5 sind die Anbindungsstellen 16, 17 demnach nicht einem Abgasrohrabschnitt des jeweiligen Abgasstrangs 11 bzw. 12 zugeordnet, sondern vielmehr einer Abgasreinigungseinrichtung bzw. einem Schalldämpfer des jeweiligen Abgasstrangs 11 bzw. 12. Hinsichtlich aller weiteren Details stimmt das Ausführungsbeispiel der Fig. 5 mit dem Ausführungsbeispiel der Fig. 1 überein. Die Kopplung der Verbindungsleitung 15 mit den Abgassträngen 11 und 12 im Bereich einer Abgasreinigungseinrichtung bzw. eines Schalldämpfers kann auch bei den Ausführungsbeispielen der Fig. 2 bis 4 zum Einsatz kommen.In contrast, shows Fig. 5 an embodiment of an exhaust system 34, in which the connecting line 15 is coupled to the first exhaust line 11 and the second exhaust line 12 respectively in the region of the exhaust line 11 and 12 associated assembly 35 and 36 to the respective exhaust line 11 and 12, wherein it may be the assemblies 35 and 36 to exhaust gas purification equipment or catalysts or even silencer. In the embodiment of Fig. 5 Accordingly, the connection points 16, 17 are not assigned to an exhaust pipe section of the respective exhaust gas line 11 or 12, but rather to an exhaust gas purification device or a silencer of the respective exhaust gas line 11 or 12. With regard to all other details, the exemplary embodiment of FIG Fig. 5 with the embodiment of Fig. 1 match. The coupling of the connecting line 15 with the exhaust gas lines 11 and 12 in the region of an exhaust gas purification device or a silencer can also in the embodiments of the Fig. 2 to 4 be used.

Fig. 6 zeigt ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Abgasanlage 37, wobei die Abgasanlage 37 der Fig. 6 im Wesentlichen der Abgasanlage 33 der Fig. 4 entspricht. Die Abgasanlage 37 der Fig. 6 unterscheidet sich von der Abgasanlage 33 der Fig. 3 dadurch, dass bei der Abgasanlage 37 der Fig. 6 der Verbindungsleitung 15 nicht zwei Absperreinrichtungen zugeordnet sind, vielmehr ist im Ausführungsbeispiel der Fig. 6 der Verbindungsleitung 15 ausschließlich eine Absperreinrichtung 22 zugeordnet. Zusätzlich ist der gemeinsamen Bypassleitung 18 eine Absperreinrichtung 38 zugeordnet. Über die der gemeinsamen Bypassleitung 18 zugeordnete Absperreinrichtung 38 kann die gemeinsame Bypassleitung 18 verschlossen werden, sodass dann, wenn die der Verbindungsleitung 15 zugeordnete Absperreinrichtung 22 geöffnet ist, Abgas ausschließlich zwischen den Abgassträngen 11 und 12 ausgetauscht wird, ohne dass jedoch Abgas über die gemeinsame Bypassleitung 18 und damit die Teilbypassleitungen 28 und 29 strömt. So ist im Ausführungsbeispiel der Fig. 6 die der Verbindungsleitung 15 zugeordnete Absperreinrichtung 22 zwischen die Anbindungsstelle der gemeinsamen Bypassleitung 18 an die Verbindungsleitung 15 und die Anbindungsstelle 17 der Verbindungsleitung 15 an den zweiten Abgasstrang 12 geschaltet. Es ist im Unterschied hierzu auch möglich, die der Verbindungsleitung 15 zugeordnete Absperreinrichtung zwischen die Anbindungsstelle 20 der gemeinsamen Bypassleitung 18 an die Verbindungsleitung 15 und die Anbindungsstelle 16 der Verbindungsleitung 15 an den ersten Abgasstrang 11 zu schalten. Fig. 6 shows a further embodiment of an exhaust system 37 according to the invention, wherein the exhaust system 37 of the Fig. 6 essentially the exhaust system 33 of the Fig. 4 equivalent. The exhaust system 37 of Fig. 6 differs from the exhaust system 33 of the Fig. 3 in that in the exhaust system 37 of the Fig. 6 the connection line 15 are not assigned two shut-off, but in the embodiment of the Fig. 6 the connecting line 15 exclusively associated with a shut-off device 22. In addition, the common bypass line 18 is assigned a shut-off device 38. About the common bypass line 18 associated shut-off device 38, the common bypass line 18 can be closed, so that when the connecting line 15 associated shut-off device 22 is opened, exhaust gas is exchanged exclusively between the exhaust lines 11 and 12, but without exhaust gas through the common bypass line 18 and thus the partial bypass lines 28 and 29 flows. Thus, in the embodiment of Fig. 6 the connecting line 15 associated shut-off device 22 between the connection point the common bypass line 18 connected to the connecting line 15 and the connection point 17 of the connecting line 15 to the second exhaust line 12. In contrast to this, it is also possible to connect the shut-off device assigned to the connecting line 15 between the connection point 20 of the common bypass line 18 to the connecting line 15 and the connection point 16 of the connecting line 15 to the first exhaust gas line 11.

Die Anordnung der Absperreinrichtungen 22 und 38 in der Verbindungsleitung 15 sowie in der gemeinsamen Bypassleitung 18 kann auch bei den Ausführungsbeispielen der Fig. 1 bis 5 sowie 6 und 7 zum Einsatz kommen.The arrangement of the shut-off devices 22 and 38 in the connecting line 15 and in the common bypass line 18 can also in the embodiments of the Fig. 1 to 5 as well as 6 and 7 are used.

Fig. 7 zeigt ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Abgasanlage 39, wobei im Ausführungsbeispiel der Fig. 7 die Merkmale der Ausführungsbeispiele der Fig. 4 und 5 miteinander kombiniert sind. So sind im Ausführungsbeispiel der Fig. 7 die Anbindungsstellen 16 und 17 der Verbindungsleitung 15 an die Abgasstränge 11 und 12 wiederum nicht Abgasrohrabschnitten, sondern einer Abgasreinigungseinrichtung oder einem Schalldämpfer 35 bzw. 36 zugeordnet. Ferner ist die gemeinsame Bypassleitung 18 in Teilbypassleitungen 28 und 29 verzweigt, die in dieselbe
Abgasreinigungseinrichtung bzw. denselben Schalldämpfer 23 bzw. 24 münden, wie die Abgasstränge 11, 12 stromabwärts der Anbindungsstellen 16, 17. Fig. 7 shows a further embodiment of an exhaust system 39 according to the invention, wherein in the embodiment of the Fig. 7 the features of the embodiments of Fig. 4 and 5 combined with each other. Thus, in the embodiment of the Fig. 7 the connection points 16 and 17 of the connecting line 15 to the exhaust gas lines 11 and 12 again not exhaust pipe sections, but an exhaust gas purification device or a silencer 35 or 36 assigned. Further, the common bypass line 18 is branched into partial bypass lines 28 and 29 which are in the same
Exhaust gas purification device or the same silencer 23 and 24 open, as the exhaust gas lines 11, 12 downstream of the connection points 16, 17th

Ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Abgasanlage 40 ist in Fig. 8 gezeigt, wobei sich das Ausführungsbeispiel der Fig. 8 vom Ausführungsbeispiel der Fig. 7 dadurch unterscheidet, dass die Teilbypassleitungen 28 und 29 in dieselbe Baugruppe 23 und 24 münden bzw. durch dieselbe Baugruppen 23 und 24 geleitet sind, von welchen die Verbindungsleitung 15 abzweigt.A further exemplary embodiment of an exhaust system 40 according to the invention is shown in FIG Fig. 8 shown, wherein the embodiment of the Fig. 8 from the embodiment of Fig. 7 differs in that the partial bypass lines 28 and 29 open into the same assembly 23 and 24 and are passed through the same assemblies 23 and 24, from which the connecting line 15 branches off.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Abgasanlageexhaust system
1111
Abgasstrangexhaust gas line
1212
Abgasstrangexhaust gas line
1313
Strömungsrichtung AbgasFlow direction exhaust gas
1414
Strömungsrichtung AbgasFlow direction exhaust gas
1515
Verbindungsleitungconnecting line
1616
Anbindungsstelleconnecting point
1717
Anbindungsstelleconnecting point
1818
gemeinsame Bypassleitungcommon bypass line
1919
Strömungsrichtung AbgasFlow direction exhaust gas
2020
Anbindungsstelleconnecting point
2121
Absperreinrichtungshut-off
2222
Absperreinrichtungshut-off
2323
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
2424
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
2525
Abgasanlageexhaust system
2626
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
2727
Abgasanlageexhaust system
2828
TeilbypassleitungPart bypass line
2929
TeilbypassleitungPart bypass line
3030
Verzweigungsstellebranching point
3131
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
3232
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
3333
Abgasanlageexhaust system
3434
Abgasanlageexhaust system
3535
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
3636
Abgasreinigungseinrichtung/SchalldämpferExhaust purification apparatus / silencer
3737
Abgasanlageexhaust system
3838
Absperreinrichtungshut-off
3939
Abgasanlageexhaust system
4040
Abgasanlageexhaust system

Claims (14)

  1. Exhaust system fcr an internal combustion engine, having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, the first exhaust tract and the second exhaust tract being coupled to one another by a connecting line, characterized in that a common bypass line (18) branches off from the connecting line (15) coupling the exhaust tracts (11, 12) with the result that exhaust gas which, emanating from the first exhaust tract (11), is branched off from the latter via the connecting line (15) and exhaust gas which, emanating from the second exhaust tract (12), is branched off from the Latter via the connecting line (15) are discharged via the common bypass line 18, and the common bypass line (18) opens, downstream of the connecting line (15) as viewed in the flow direction of the exhaust gas, to atmosphere, into an exhaust gas purification device (26) or into a silencer (26) .
  2. Exhaust system for an internal combustion engine, having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, the first exhaust tract and the second exhaust tract being coupled to one another by a connecting line, characterized in that a common bypass line (18) branches off from the connecting line (15) coupling the exhaust tracts (11, 12) with the result that exhaust gas which, emanating from the first exhaust tract (11), is branched off from the latter via the connecting line (15) and exhaust gas which, emanating from the second exhaust tract (12), is branched off from the latter via the connecting line (15) are discharged via the common bypass line 18, and the common bypass line (18) branching into at least two bypass branch lines (28, 29) downstream of the connecting line (15), as seen in the direction of flow of the exhaust gas.
  3. Exhaust system according to Claim 2, characterized in that each bypass branch line (28, 29) opens to atmosphere downstream of a branch point (30) in the common bypass line (18), as seen in the direction of flow of the exhaust gas.
  4. Exhaust system according to Claim 2, characterized in that each bypass branch line (28, 29) opens into an exhaust gas purification device downstream of a branch point (30) in the common bypass line (18), as seen in the direction of flow of the exhaust gas.
  5. Exhaust system according to Claim 4, characterized in that each bypass branch line (28, 29) is assigned a dedicated exhaust gas purification device (31, 32), with the result that, on the one hand, each bypass branch line (28, 29) opens into a separate exhaust gas purification device (31, 32) downstream of the point (30) where the common bypass line (18) branches into the bypass branch lines (28, 29) and, on the other hand, each exhaust tract (11, 12) opens into a separate exhaust gas purification device (23, 24) downstream of a point of connection (16, 17) of the connecting line (15) to the respective exhaust tract (11, 12), as seen in the direction of flow of the exhaust gas.
  6. Exhaust system according to Claim 4, characterized in that each bypass branch line (28, 29) opens into an exhaust gas purification device (23, 24) into which an Exhaust tract (11, 12) opens downstream of a point of connection (16, 17) of the connecting line (15) to the respective exhaust tract (11, 12), as seen in the direction of flow of the exhaust gas.
  7. Exhaust system according to Claim 2, characterized in that each bypass branch line (28, 29) opens into a silencer downstream of a branch point (30) in the common bypass line (18), as seen in the direction of flow of the exhaust gas.
  8. Exhaust system according to Claim 7, characterized in that each bypass branch line (28, 29) is assigned a dedicated silencer (31, 32), with the result that, on the one hand, each bypass branch line opens into a separate silencer (31, 32) downstream of the point (30) where the common bypass line (18) branches into the bypass branch lines (28, 29) and, on the other hand, each exhaust tract (11, 12) opens into a separate silencer (23, 24) downstream of a point of connection (16, 17) of the connecting line (15) to the respective exhaust tract (11, 12), as seen in the direction of flow of the exhaust gas.
  9. Exhaust system according to Claim 7, characterized in that each bypass branch line (28, 29) opens into a silencer (23, 24) into which an exhaust tract (11, 12) opens downstream of a point of connection (16, 17) of the connecting line (15) to the respective exhaust tract (11, 12), as seen in the direction of flow of the exhaust gas.
  10. Exhaust system according to one of Claims 1 to 9, characterized in that the connecting line (15) to the first exhaust tract (11) and to the second exhaust tract (12) is in each case coupled to the said exhaust tracts in the region of an exhaust pipe section of the respective exhaust tract (11, 12).
  11. Exhaust system according to one of Claims 1 to 9, characterized in that the connecting line (15) to the first exhaust tract (11) and to the second exhaust tract (12) is in each case coupled to the said exhaust tracts in the region of an exhaust gas purification device (35, 36) of the respective exhaust tract (11, 12).
  12. Exhaust system according to one of Claims 1 to 9, characterized in that the connecting line (15) to the first exhaust tract (11) and to the second exhaust tract (12) is in each case coupled tc the said exhaust tracts in the region of a silencer (35, 36) of the respective exhaust tract (11, 12).
  13. Exhaust system according to one of Claims 1 to 12, characterized in that the connecting line (15) is assigned at least two shut-off devices, namely a first shut-off device (21) between a point of connection (16) of the connecting line to the first exhaust tract and a point of connection (20) of the common bypass line to the connecting line, and a second shut-off device (22) between a point of connection (17) of the connecting line to the second exhaust tract and the point of connection (20) of the common bypass line to the connecting line.
  14. Exhaust system according to one of Claims 1 to 12, characterized in that the connecting line (15) is assigned one shut-off device (22), namely between a point of connection of the connecting line to the first exhaust tract and a point of connection of the common bypass line to the connecting line, or between a point of connection (17) of the connecting line to the second exhaust tract and the point of connection (20) of the common bypass line to the connecting line, and in that the common bypass line (18) is assigned an additional shut-off device (28).
EP10005111A 2009-07-06 2010-05-15 Exhaust system for an internal combustion engine Active EP2287452B1 (en)

Applications Claiming Priority (1)

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DE102009032215A DE102009032215A1 (en) 2009-07-06 2009-07-06 Exhaust system of an internal combustion engine

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CN (1) CN101943046B (en)
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CN101943046A (en) 2011-01-12
US20110000201A1 (en) 2011-01-06
RU102229U1 (en) 2011-02-20
US8826651B2 (en) 2014-09-09
DE102009032215A1 (en) 2011-01-27
EP2287452A1 (en) 2011-02-23
CN101943046B (en) 2015-04-29

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