EP1860295B1 - Motor vehicle with an exhaust system - Google Patents

Motor vehicle with an exhaust system Download PDF

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Publication number
EP1860295B1
EP1860295B1 EP07004846A EP07004846A EP1860295B1 EP 1860295 B1 EP1860295 B1 EP 1860295B1 EP 07004846 A EP07004846 A EP 07004846A EP 07004846 A EP07004846 A EP 07004846A EP 1860295 B1 EP1860295 B1 EP 1860295B1
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EP
European Patent Office
Prior art keywords
exhaust
pipes
tailpipe cover
motor vehicle
inner pipes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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EP07004846A
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German (de)
French (fr)
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EP1860295A2 (en
EP1860295A3 (en
Inventor
Bernd Stadler
Volker Hoffmann
Eberhard Storz
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication of EP1860295A3 publication Critical patent/EP1860295A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • 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
    • 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
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation

Definitions

  • the invention relates to a motor vehicle with an exhaust system with two exhaust pipes with an attachable to the exhaust pipes Abgasendrohrblende according to the preamble of claim 1.
  • an exhaust end pipe orifice for an exhaust system of a motor vehicle which has an exhaust end pipe with a deferred inner pipe, which deflects the exhaust gas flow downwards towards the road surface.
  • the inner tube is surrounded by a diaphragm tube.
  • the DE 199 14 426 A1 describes a double-walled tailpipe for an exhaust pipe of an exhaust system of a motor vehicle, wherein a support of the outer shell is proposed relative to the inner shell, wherein outer shell and inner shell are connected only in the overlap region to the exhaust pipe, but in the direction of the exit end of the exhaust pipe are non-contact each other.
  • the object of the invention is to provide a motor vehicle with an exhaust system with a Abgasendrohrblende, which is exposed to the lowest possible heat loads or heat transfer to a surrounding vehicle rear part, in particular made of plastic, avoids.
  • the advantages achieved by the invention are that by an air gap insulation between the directly leading to the exhaust gas exhaust pipes and a Abgasendrohrblende a direct heat transfer to the Abgasendrohrblende is avoided and thus the vehicle rear part made of plastic is not exposed to high heat loads.
  • This is done in such a way that the Abgasendrohrblende is connected via a holding device with one or two exhaust pipes of the exhaust system and between the Abgasendrohrblende and the exhaust pipes each individual exhaust inner tubes are arranged, which are attached to the two exhaust pipes and firmly connected to the Abgasendrohrblende, wherein Forms a continuous channel between the two exhaust pipes and the receiving Abgasendrohrblende all around. This channel can thus have a heat-regulating effect in the driving state due to air flowing through.
  • the assembly of the threaded screw takes place from the underside of the exhaust system and the positive-locking position of the retaining tongue in the dovetail-shaped receptacle also ensures a laterally secure hold, which is particularly necessary for vibrations in the exhaust system.
  • FIG. 1 an end region of an exhaust system 1 of a motor vehicle is shown, which essentially has an exhaust pipe 2 and branching off from it two exhaust pipes 3, 4 for upstream exhaust gas inner tubes 5, 6. These are held in a slipped Abgasendrohrblende 7, which projects, for example, through a section A of a vehicle rear part 8a, which in Fig. 7 is shown in more detail.
  • the exhaust gas flow flows through the exhaust pipe 2 in the direction of arrow P, branches into the two adjoining exhaust pipes 3, 4 and then flows into the exhaust gas inner tubes 5, 6 and then flows outward.
  • the tight connection consists in each case of a pipe expansion 20 into which an opposite pipe end 21 of the exhaust pipes 5, 6 can be inserted.
  • the exhaust pipe diaphragm 7 may for example consist of an aluminum casting or a sheet metal part, wherein the exhaust gas inner tube 5, 6 may consist of stainless steel, for example titanium.

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

Abstract

The system has an exhaust gas pipe orifice (7), which is arranged in a section of a vehicle rear part (8a). The exhaust gas pipe orifice is connected with two exhaust gas pipes of the system via a holding device. Exhaust gas inner pipes (5, 6) are arranged between the exhaust gas pipe orifice and the exhaust gas pipes. The exhaust gas inner pipes are held on the exhaust gas pipes in an inserted manner and are connected with the exhaust gas pipe orifice in a fixed manner such that a passage channel (K) is formed circumferentially between the exhaust gas inner pipes and the orifice.

Description

Die Erfindung bezieht sich auf ein Kraftfahrzeug mit einer Abgasanlage mit zwei Abgasrohren mit einer auf die Abgasrohre aufsetzbaren Abgasendrohrblende nach dem Oberbegriff des Anspruchs 1.The invention relates to a motor vehicle with an exhaust system with two exhaust pipes with an attachable to the exhaust pipes Abgasendrohrblende according to the preamble of claim 1.

Aus der DE 10 355 472 A1 ist eine Abgasendrohrblende für eine Abgasanlage eines Kraftfahrzeugs bekannt, die ein Abgasendrohr mit einem aufgeschobenen Innenrohr aufweist, das den Abgasstrom nach unten hin zur Fahrbahnoberfläche ablenkt. Das Innenrohr ist von einem Blendenrohr umgeben.From the DE 10 355 472 A1 For example, an exhaust end pipe orifice for an exhaust system of a motor vehicle is known, which has an exhaust end pipe with a deferred inner pipe, which deflects the exhaust gas flow downwards towards the road surface. The inner tube is surrounded by a diaphragm tube.

Die DE 199 14 426 A1 beschreibt ein doppelwandiges Endrohr für ein Abgasrohr einer Abgasanlage eines Kraftfahrzeuges, wobei eine Abstützung der Außenschale gegenüber der Innenschale vorgeschlagen wird, bei welcher Außenschale und Innenschale lediglich im Überlappungsbereich zum Abgasrohr verbunden sind, in Richtung auf das austrittsseitige Ende des Abgasrohres aber berührungsfrei zueinander stehen.The DE 199 14 426 A1 describes a double-walled tailpipe for an exhaust pipe of an exhaust system of a motor vehicle, wherein a support of the outer shell is proposed relative to the inner shell, wherein outer shell and inner shell are connected only in the overlap region to the exhaust pipe, but in the direction of the exit end of the exhaust pipe are non-contact each other.

Die Aufgabe der Erfindung besteht darin, ein Kraftfahrzeug mit einer Abgasanlage mit einer Abgasendrohrblende zu schaffen, welche möglichst geringen Wärmebelastungen ausgesetzt ist bzw. eine Wärmeübertragung zu einem umgebenden Fahrzeugheckteil, insbesondere aus Kunststoff, vermeidet.The object of the invention is to provide a motor vehicle with an exhaust system with a Abgasendrohrblende, which is exposed to the lowest possible heat loads or heat transfer to a surrounding vehicle rear part, in particular made of plastic, avoids.

Diese Aufgabe wird erfindungegemäß durch die Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Merkmale beinhalten die Unteransprüche.This object is achieved according erfindungegemäß by the features of claim 1. Further advantageous features include the subclaims.

Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, dass durch eine Luftspaltisolierung zwischen den direkt das Abgas führenden Abgasinnenrohren und einer Abgasendrohrblende eine unmittelbare Wärmeübertragung auf die Abgasendrohrblende vermieden wird und somit auch das Fahrzeugheckteil aus Kunststoff keinen zu hohen Wärmebelastungen ausgesetzt ist. Dies erfolgt in der Weise, dass die Abgasendrohrblende über eine Halteeinrichtung mit einem oder zwei Abgasrohren der Abgasanlage verbunden ist und zwischen der Abgasendrohrblende und den Abgasrohren jeweils einzelne Abgasinnenrohre angeordnet sind, die auf den beiden Abgasrohren aufgesteckt gehalten und mit der Abgasendrohrblende fest verbunden sind, wobei sich zwischen den beiden Abgasinnenrohren und der aufnehmenden Abgasendrohrblende ringsum ein durchgehender Kanal bildet. Dieser Kanal kann somit im Fahrzustand aufgrund von durchströmender Luft wärmeregulierend wirken.The advantages achieved by the invention are that by an air gap insulation between the directly leading to the exhaust gas exhaust pipes and a Abgasendrohrblende a direct heat transfer to the Abgasendrohrblende is avoided and thus the vehicle rear part made of plastic is not exposed to high heat loads. This is done in such a way that the Abgasendrohrblende is connected via a holding device with one or two exhaust pipes of the exhaust system and between the Abgasendrohrblende and the exhaust pipes each individual exhaust inner tubes are arranged, which are attached to the two exhaust pipes and firmly connected to the Abgasendrohrblende, wherein Forms a continuous channel between the two exhaust pipes and the receiving Abgasendrohrblende all around. This channel can thus have a heat-regulating effect in the driving state due to air flowing through.

Damit eine stabile Verbindung zwischen den Abgasrohren und der Abgasendrohrblende geschaffen wird, ist nach der Erfindung des weiteren vorgesehen, dass zwischen den zwei Abgasrohren oder auch nur einem Abgasrohr die Halteeinrichtung befestigt ist und in einer senkrechten Mittenebene von zwei Abgasrohren eine vorragende Haltezunge der Halteeinrichtung angeordnet ist, die in eine Nutaufnahme, beispielsweise T-Nut-Aufnahme, der Abgasendrohrblende einschiebbar und über ein Befestigungsmittel gehalten ist. Auf der vorragenden Haltezunge ist eine Gewindemutter festgelegt und in einer Bohrung der Abgasendrohrblende ist eine Gewindeschraube zur Gewindemutter auf der Haltezunge durchführbar und mit dieser verbindbar. Die Montage der Gewindeschraube erfolgt von der Unterseite der Abgasanlage her und über die formschlüssige Haltung der Haltezunge in der schwalbenschwanzförmigen Aufnahme ist auch ein seitlich sicherer Halt gewährleistet, was insbesondere bei Schwingungen an der Abgasanlage erforderlich ist.So that a stable connection between the exhaust pipes and the Abgasendrohrblende is provided, it is further provided according to the invention that between the two exhaust pipes or even an exhaust pipe, the holding device is fixed and a projecting retaining tongue of the holding device is arranged in a vertical center plane of two exhaust pipes , which is in a slot, for example T-slot, the Abgasendrohrblende inserted and held by a fastening means. On the projecting retaining tongue a threaded nut is fixed and in a bore of the Abgasendrohrblende a threaded screw to the threaded nut on the retaining tongue feasible and connectable to this. The assembly of the threaded screw takes place from the underside of the exhaust system and the positive-locking position of the retaining tongue in the dovetail-shaped receptacle also ensures a laterally secure hold, which is particularly necessary for vibrations in the exhaust system.

Die zwischen den Abgasrohren und der Abgasrohrblende angeordneten Abgasinnenrohre, die unmittelbar abgasführend sind, bilden quasi eine Verlängerung der Abgasrohre. Die beiden Abgasinnenrohre weisen an ihren Außenumfangsflächen mehrere nach außen vorgespannte federnden Klemmelemente auf, die sich im eingesteckten Zustand in der Abgasendrohrblende von der Innenwandung haltend abstützen und eine feste Verbindung zur Abgasendrohrblende über Schraubmittel bewirken.The arranged between the exhaust pipes and the Abgasrohrblende exhaust pipes, which are directly exhaust gas leading, form quasi an extension of the exhaust pipes. The two exhaust inner tubes have on their outer peripheral surfaces a plurality of outwardly biased resilient clamping elements which are supported in the inserted state in the Abgasendrohrblende holding the inner wall and cause a firm connection to Abgasendrohrblende via screw.

Zur Befestigung der beiden Abgasinnenrohre in der Abgasendrohrblende sind nach der Erfindung an den Außenumfangsfläche der beiden Abgasinnenrohre einander zugerichtete vorragende Abstützschenkel befestigt, die sich im eingeführten Zustand in die Abgasendrohrblende beispielsweise an benachbart der Nutaufnahme angeordneten Anschlägen abstützen und über die Schraubmittel festgesetzt sind. Hierdurch wird in vorteilhafter Weise nach der Erfindung erreicht, dass die Abgasinnenrohre fest mit der Abgasendrohrblende verbunden sind, so dass auch durch auftretende Schwingungen keine Berührungen mit der Innenwandung der Abgasendrohrblende vorkommen können.For attachment of the two exhaust inner tubes in the Abgasendrohrblende are aligned according to the invention to the outer peripheral surface of the two exhaust inner tubes facing each other Vorsteende Abstützschenkel, which are supported in the inserted state in the Abgasendrohrblende, for example adjacent to the groove receiving stops and are fixed on the screw. In this way is achieved in an advantageous manner according to the invention, that the exhaust inner tubes are firmly connected to the Abgasendrohrblende, so that even by vibrations occurring no contact with the inner wall of the Abgasendrohrblende can occur.

Des Weiteren sind die beiden Abgasinnenrohre mit den beiden Abgasrohren durch eine Rohraufweitung direkt aufsteckbar und die der Rohraufweitung abgekehrten freien Enden der beiden Abgasinnenrohre weisen ringsum einen Luftspalt zur Innenumfangsfläche der Abgasendrohrblende am Ausmündungsbereich der Abgase auf. Somit ist von den Abgasrohren über die Innenrohre eine Abführung der Abgase der Brennkraftmaschine möglich, ohne dass diese mit der Abgasrohrblende in Kontakt kommen.Furthermore, the two exhaust pipes with the two exhaust pipes by a pipe expansion are directly plugged and facing away from the pipe expansion free ends of the two exhaust inner tubes have an air gap around the inner peripheral surface of the Abgasendrohrblende at the Ausmündungsbereich of the exhaust gases. Thus, a discharge of the exhaust gases of the internal combustion engine is possible from the exhaust pipes via the inner tubes, without these come into contact with the exhaust pipe diaphragm.

Die Abgasinnenrohre sind im Ausmündungsbereich jeweils trompetenförmig erweitert ausgeführt und zwischen den Mündungsbereichen der Abgasendrohre und den Mündungsbereichen der Abgasinnenrohre wird ein Luftspalt gebildet, wobei die Abgasinnenrohre in der Abgasendrohrblende durchgehend jeweils beabstandet zur Innenwandung angeordnet sind und sich der Kanal ergibt. Dieser Kanal zwischen den Abgasinnenrohren und der Abgasendrohrblende kann im Fahrbetrieb eine Luftdurchströmung ergeben und hieraus resultierend eine Wärmeabführung der durch Abgase aufgeheizten Abgasinnenrohre. Insbesondere wird bei einer Lackierung der Abgasendrohrblende diese nicht durch Wärmebelastungen beschädigt.The exhaust gas inner tubes are each trumpet-shaped expanded in the Ausmündungsbereich and between the mouth areas of the exhaust pipes and the mouth areas of the exhaust gas inner tubes an air gap is formed, the exhaust inner tubes are arranged in the Abgasendrohrblende continuously spaced from the inner wall and the channel results. This channel between the exhaust inner tubes and the Abgasendrohrblende can result in driving an air flow and, as a result, a heat dissipation of heated by exhaust gases exhaust pipes. In particular, in a painting of the Abgasendrohrblende this is not damaged by heat loads.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden näher beschrieben.An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Es zeigen

Fig. 1
eine Explosivdarstellung eines Endbereichs der Abgasanlage mit Abgasrohr, Abgasinnenrohren und Abgasendrohrblende,
Fig. 2
einen zusammengebauten Endbereich der Abgasanlage mit Abgasendrohrblende in schaubildlicher Darstellung,
Fig. 3
eine Ansicht auf eine Halteeinrichtung an den Abgasrohren in Form einer vorragenden Haltezunge mit Gewindemutter,
Fig. 4
eine vergrößerte Ansicht auf eine schwalbenschwanzförmige Aufnahme in der Abgasendrohrblende für die Halteeinrichtung gemäß Fig. 3,
Fig. 5
eine Ansicht auf die Abgasinnenrohre mit federnden Klemmelementen und Abstützschenkeln,
Fig. 6
eine Ansicht auf den montierten Endbereich der Abgasanlage mit sichtbarem Spalt und Luftdurchstromkanal zwischen den Abgasinnenrohren und der Abgasendrohrblende,
Fig. 7
einen Vertikalschnitt durch die Abgasendrohrblende mit eingesetzten Abgasinnenrohr und dargestelltem Kanal im eingebauten Zustand in einem Fahrzeugeheckteil.
Show it
Fig. 1
an exploded view of an end portion of the exhaust system with exhaust pipe, exhaust pipes and Abgasendrohrblende,
Fig. 2
an assembled end portion of the exhaust system with Abgasendrohrblende in perspective view,
Fig. 3
a view of a holding device on the exhaust pipes in the form of a protruding retaining tongue with threaded nut,
Fig. 4
an enlarged view of a dovetail-shaped receptacle in the Abgasendrohrblende for the holding device according to Fig. 3 .
Fig. 5
a view of the exhaust inner tubes with resilient clamping elements and support legs,
Fig. 6
a view of the mounted end portion of the exhaust system with visible gap and air flow channel between the exhaust inner tubes and the Abgasendrohrblende,
Fig. 7
a vertical section through the Abgasendrohrblende with inserted exhaust pipe and Kanalem shown in the installed state in a vehicle rear part.

In Fig. 1 ist ein Endbereich einer Abgasanlage 1 eines Kraftfahrzeugs dargestellt, die im Wesentlichen ein Abgasrohr 2 und hiervon abzweigend zwei Abgasrohre 3, 4 für stromauf anschließende Abgasinnenrohre 5, 6 aufweist. Diese sind in einer übergestülpten Abgasendrohrblende 7 gehalten, welche beispielsweise durch einen Ausschnitt A eines Fahrzeugheckteils 8a ragt, was in Fig. 7 näher dargestellt ist. Der Abgasstrom durchströmt das Abgasrohr 2 in Pfeilrichtung P, verzweigt sich in die beiden anschließenden Abgasrohre 3, 4 und strömt dann in die Abgasinnenrohre 5, 6 und mündet dann nach außen.In Fig. 1 an end region of an exhaust system 1 of a motor vehicle is shown, which essentially has an exhaust pipe 2 and branching off from it two exhaust pipes 3, 4 for upstream exhaust gas inner tubes 5, 6. These are held in a slipped Abgasendrohrblende 7, which projects, for example, through a section A of a vehicle rear part 8a, which in Fig. 7 is shown in more detail. The exhaust gas flow flows through the exhaust pipe 2 in the direction of arrow P, branches into the two adjoining exhaust pipes 3, 4 and then flows into the exhaust gas inner tubes 5, 6 and then flows outward.

Das Abgasrohr 2 bzw. die anschließenden Abgasrohre 3, 4 sind mit der Abgasendrohrblende 7 über eine Halteeinrichtung 10 (Fig. 3) verbunden, die an den Abgasrohren 3, 4 befestigt ist. Sie besteht im wesentlichen aus einer in einer senkrechten Mittenebene der Abgasrohre 3, 4 angeordneten vorragenden Haltezunge 11, die in einer T-Nut-förmigen Aufnahme 12 oder einer ähnlichen Aufnahme der Abgasendrohrblende 7 einführbar ist und diese Haltezunge 11 lagegenau abstützt und über eine Befestigungsschraube 14 festgesetzt wird.The exhaust pipe 2 and the subsequent exhaust pipes 3, 4 are connected to the Abgasendrohrblende 7 via a holding device 10 (FIG. Fig. 3 ), which is attached to the exhaust pipes 3, 4. It consists essentially of a arranged in a vertical center plane of the exhaust pipes 3, 4 projecting retaining tongue 11 which is insertable in a T-slot-shaped receptacle 12 or a similar receptacle of Abgasendrohrblende 7 and this retaining tongue 11 is accurately supported and a fastening screw 14th is fixed.

Hierzu weist die Haltezunge 11 eine festgelegte Gewindemutter 13 auf, in die die Befestigungsschraube 14 eingeschraubt wird, wozu diese in eine Bohrung 15 der Abgasendrohrblende 7 eingesetzt wird.For this purpose, the retaining tongue 11 has a fixed threaded nut 13 into which the fastening screw 14 is screwed, for which purpose it is inserted into a bore 15 of the exhaust end pipe diaphragm 7.

Des weiteren werden mit der Abgasendrohrblende 7 die Abgasinnenrohre 5, 6 verbunden, wozu diese an ihrer Außenumfangsfläche zwei gegenüberstehende Abstützwinkel 16, 16a aufweisen, die sich im eingeschobenen Zustand in die Abgasendrohrblende 7 an seitlich der Aufnahme 7 angeordneten Absätzen abstützen und über Schrauben 17, 18 in diesen festsetzbar sind. Zur beabstandeten Lagerung in der Abgasendrohrblende 7 sind am Außenumfang der Abgasinnenrohre 5, 6 mehrere verteilt angeordnete federnde Klemmelemente 19 angeordnet.Furthermore, the exhaust inner tubes 5, 6 are connected to the Abgasendrohrblende 7, to which they have on its outer peripheral surface two opposing support bracket 16, 16a, which are supported in the inserted state in the Abgasendrohrblende 7 at the side of the receptacle 7 arranged paragraphs and screws 17, 18th are determinable in these. For spaced storage in the Abgasendrohrblende 7 a plurality of distributed resilient sprung elements 19 are arranged on the outer circumference of the exhaust inner tubes 5, 6.

Damit der Abgasstrom P über das Abgasrohr 2 und die anschließenden Abgasrohre 5, 6 in die Abgasinnenrohre 5, 6 überströmen kann, weisen diese einen dichten Anschluss zu den Abgasrohren 5, 6 auf. Der dichte Anschluss besteht jeweils aus einer Rohraufweitung 20, in welche ein gegenüberstehendes Rohrende 21 der Abgasrohre 5, 6 einsteckbar ist.So that the exhaust gas flow P can flow over the exhaust pipe 2 and the adjoining exhaust pipes 5, 6 into the exhaust gas inner tubes 5, 6, they have a tight connection to the exhaust gas pipes 5, 6. The tight connection consists in each case of a pipe expansion 20 into which an opposite pipe end 21 of the exhaust pipes 5, 6 can be inserted.

Die Abgasinnenrohre 5, 6 sind derart in der Abgasendrohrblende 7 angeordnet, dass sich zwischen den Abgasinnenrohren 5, 6 und der Abgasendrohrblende 7 ein ringsum verlaufender Luftkanal K bildet, so dass im Fahrbetrieb eine Luftdurchströmung erfolgen kann, damit eine Wärmeabfuhr gewährleistet ist und die Abgasendrohrblende 7 keiner wesentlichen Wärmeabstrahlung mehr ausgesetzt ist und das Fahrzeugheckteil weitgehend von schädlichen Wärmebeeinflussungen freigehalten wird.The exhaust inner tubes 5, 6 are arranged in the Abgasendrohrblende 7, that forms a round extending air duct K between the exhaust inner tubes 5, 6 and the Abgasendrohrblende 7 so that an air flow can take place while driving, so that heat dissipation is ensured and the Abgasendrohrblende. 7 no more significant heat radiation is exposed and the vehicle rear part is largely kept free from harmful heat influences.

Die Abgasrohrblende 7 kann beispielsweise aus einem Aluminium-Guss oder aus einem Blechteil bestehen, wobei das Abgasinnenrohr 5, 6 aus Edelstahl beispielsweise Titan bestehen kann.The exhaust pipe diaphragm 7 may for example consist of an aluminum casting or a sheet metal part, wherein the exhaust gas inner tube 5, 6 may consist of stainless steel, for example titanium.

Claims (8)

  1. Motor vehicle having an exhaust system with two exhaust pipes (3, 4), with an exhaust tailpipe cover which can be placed on the exhaust pipes (3, 4) and which is arranged in a cutout of a vehicle rear-end part, with the exhaust tailpipe cover (7) being connected by means of a retaining device (10) to one or two exhaust pipes (3, 4) of the exhaust system (1), characterized in that two individual exhaust inner pipes (5, 6) are arranged between the exhaust tailpipe cover (7) and the exhaust pipes (3, 4), which exhaust inner pipes (5, 6) are each plugged onto and held on the two exhaust pipes (3, 4) and are fixedly connected to the exhaust tailpipe cover (7) in such a way that a continuous duct (K) is formed in an encircling fashion between the two exhaust inner pipes (5, 6) and the exhaust tailpipe cover (7) which accommodates said exhaust inner pipes (5, 6).
  2. Motor vehicle according to Claim 1, characterized in that the retaining device (10) is fastened between the two exhaust pipes (3, 4) and a projecting retaining tongue (11) of the retaining device (10) is arranged in a vertical central plane of the two exhaust pipes (3, 4), which retaining tongue (11) can be pushed into a receptacle (12) of the exhaust tailpipe cover (7) and is held by means of at least one fastening means which is designed as a threaded screw (14).
  3. Motor vehicle according to Claims 1 or 2,
    characterized in that a threaded nut (13) is fastened to the projecting retaining tongue (11) and the threaded screw (14) can be guided through to the threaded nut (13), and connected to the latter, in a bore (15) of the exhaust tailpipe cover (7).
  4. Motor vehicle according to Claims 1, 2 or 3,
    characterized in that the two exhaust inner pipes (5, 6) have, on their outer circumferential surfaces, a plurality of outwardly preloaded resilient clamping elements (19) which, in the plugged-in state in the exhaust tailpipe cover (7), are supported so as to be held on an inner wall, and a fixed connection to the exhaust tailpipe cover (7) is provided by screw means (17, 18).
  5. Motor vehicle according to Claims 1 or 4,
    characterized in that projecting support limbs (16, 16a) which are directed towards one another are fastened to the outer circumferential surfaces of the two exhaust inner pipes (5, 6), which support limbs (16, 16a), in the inserted state in the exhaust tailpipe cover (7), are supported on stops arranged adjacent to the dovetail-shaped receptacle (12) and are fixed by the screw means (17, 18).
  6. Motor vehicle according to one of the preceding claims, characterized in that the two exhaust inner pipes (5, 6) can be sealingly plugged onto the two exhaust pipes (3, 4) by means of a flared pipe portion (20), and those free ends of the two exhaust inner pipes (5, 6) which face away from the flared pipe portion (20) have an encircling air gap (8) with respect to the inner circumferential surface of the exhaust tailpipe cover (7) at least at the opening-out region of the exhaust gases.
  7. Motor vehicle according to one of the preceding claims, characterized in that the exhaust inner pipes (5, 6) are in each case of flared, trumpet-like design in the opening-out region, and the air gap (8) is formed between the opening-out regions of the exhaust tailpipe cover (7) and the opening-out regions of the exhaust inner pipes (5, 6), and in that the exhaust inner pipes (5, 6) are arranged in the exhaust tailpipe cover (7) in each case with a spacing with respect to the inner wall, and the continuous duct (K) is generated as an insulating air gap.
  8. Motor vehicle according to one of the preceding claims, characterized in that the exhaust tailpipe cover (7) is composed of a single-piece cast part and the exhaust inner pipes (5, 6) are composed of a high-grade steel and are of thin-walled design.
EP07004846A 2006-05-24 2007-03-09 Motor vehicle with an exhaust system Expired - Fee Related EP1860295B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006024269A DE102006024269A1 (en) 2006-05-24 2006-05-24 exhaust system

Publications (3)

Publication Number Publication Date
EP1860295A2 EP1860295A2 (en) 2007-11-28
EP1860295A3 EP1860295A3 (en) 2008-05-28
EP1860295B1 true EP1860295B1 (en) 2009-08-12

Family

ID=38320198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07004846A Expired - Fee Related EP1860295B1 (en) 2006-05-24 2007-03-09 Motor vehicle with an exhaust system

Country Status (6)

Country Link
US (1) US7874150B2 (en)
EP (1) EP1860295B1 (en)
JP (1) JP5065764B2 (en)
CN (1) CN101085598B (en)
AT (1) ATE439509T1 (en)
DE (2) DE102006024269A1 (en)

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FR2950385B1 (en) * 2009-09-22 2015-11-13 Peugeot Citroen Automobiles Sa END OF EXHAUST LINE AND VEHICLE EQUIPPED WITH THIS END
US9328648B2 (en) * 2013-04-18 2016-05-03 Ford Global Technologies, Llc Protective shield to reduce exhaust soot and condensate deposition
US9536040B2 (en) 2013-04-18 2017-01-03 Ford Global Technologies, Llc Methods for designing an exhaust assembly for a vehicle
US9346350B2 (en) * 2013-04-18 2016-05-24 Ford Global Technologies, Llc Flush and sub-flush protective shields to reduce exhaust soot and condensate deposition
DE102013017947B4 (en) 2013-10-29 2015-10-22 Audi Ag Tailpipe trim and method for mounting a tailpipe trim
DE102013021981B4 (en) 2013-12-20 2016-01-21 Audi Ag Exhaust system of an internal combustion engine and method for mounting a tailpipe trim on a tailpipe of an exhaust system of an internal combustion engine
DE202015103869U1 (en) * 2015-07-23 2015-11-16 Cisma Solutions Aps Exhaust pipe mounting assembly
JP6929270B2 (en) 2015-08-25 2021-09-01 アルテミス インテリジェント パワー リミティドＡｒｔｅｍｉｓ Ｉｎｔｅｌｌｉｇｅｎｔ Ｐｏｗｅｒ Ｌｉｍｉｔｅｄ Measurement and use of hydraulic rigidity of hydraulic equipment
WO2017204279A1 (en) * 2016-05-25 2017-11-30 本田技研工業株式会社 Heat source cover
JP6328174B2 (en) * 2016-06-09 2018-05-23 本田技研工業株式会社 Exhaust system
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TR201820408A2 (en) * 2018-12-25 2020-07-21 Tofas Tuerk Otomobil Fabrikasi Anonim Sirketi A FIXING PART FOR EXHAUST TAIL PIPES
JP7121665B2 (en) * 2019-01-09 2022-08-18 本田技研工業株式会社 Mounting structure of exhaust pipe finisher
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Also Published As

Publication number Publication date
CN101085598B (en) 2012-07-11
EP1860295A2 (en) 2007-11-28
JP2007315384A (en) 2007-12-06
JP5065764B2 (en) 2012-11-07
DE102006024269A1 (en) 2007-11-29
EP1860295A3 (en) 2008-05-28
ATE439509T1 (en) 2009-08-15
CN101085598A (en) 2007-12-12
DE502007001272D1 (en) 2009-09-24
US20070271911A1 (en) 2007-11-29
US7874150B2 (en) 2011-01-25

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