DE102004026705B4 - Gas-tight decoupling unit for e.g. passenger car`s exhaust system, has hoses and edge units to form annular cavity between hoses with suitable pneumatic connection, which is pressurized in operating condition using ambient air - Google Patents
Gas-tight decoupling unit for e.g. passenger car`s exhaust system, has hoses and edge units to form annular cavity between hoses with suitable pneumatic connection, which is pressurized in operating condition using ambient air Download PDFInfo
- Publication number
- DE102004026705B4 DE102004026705B4 DE102004026705A DE102004026705A DE102004026705B4 DE 102004026705 B4 DE102004026705 B4 DE 102004026705B4 DE 102004026705 A DE102004026705 A DE 102004026705A DE 102004026705 A DE102004026705 A DE 102004026705A DE 102004026705 B4 DE102004026705 B4 DE 102004026705B4
- Authority
- DE
- Germany
- Prior art keywords
- exhaust
- decoupling element
- winding
- tight decoupling
- winding tubes
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
-
- 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
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
- F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
-
- 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
- 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
- F01N13/1816—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 the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
-
- 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
- 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
- F01N13/1827—Sealings specially adapted for exhaust systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/20—Double-walled hoses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Die Erfindung betrifft ein Entkopplungselement für schwingbeanspruchte Rohrleitungen, für die Abgasleitungen in Kraftfahrzeugen typische Ausführungsbeispiele sind.The The invention relates to a decoupling element for vibration-stressed pipelines, for the exhaust pipes in motor vehicles typical embodiments are.
Die
Aufgabe solcher Leitungselemente besteht darin, schwingbeanspruchte
Rohrleitungen flexibel miteinander zu verbinden und dabei schwingungstechnisch
weitgehend zu entkoppeln. Aufgrund der im PKW-Bereich vorliegenden
Forderung nach Gasdichtheit ist ein Metallbalg hier oftmals ein
Modul solcher Entkopplungselemente. Da die großen Durchmesserunterschiede
in den Wellungen des Metallbalgs Turbulenzen erzeugen können, wird
in der Regel ein Metallschlauch in das Leitungselement integriert,
um die laminare Abgasströmung
sicherzustellen. Hierbei ist darauf zu achten, daß während des
Betriebs eine nur minimale Geräuschentwicklung durch
das Anschlagen des Metallschlauchs an der Innenseite des Balgs entsteht.
Dies wird in vielen Fällen
durch ein den Schlauch umgebendes Drahtgestricke bewirkt.
Im
Nutzfahrzeugbereich werden oftmals mehrlagige, gewickelte Metallschläuche aus
profiliertem Bandmaterial als Entkopplungselement in den Abgasanlagen
eingesetzt. Aufgrund einer zwar geringen, aber dennoch zulässigen Restleckage
ist hier kein gasdichtes Element, wie z.B. ein Metallbalg, erforderlich.
Ein einfaches Ausführungsbeispiel
für die als
Entkopplungselement eingesetzten Metallschläuche ist der sogenannte Agraff-Schlauch.
Weitere Ausführungsbeispiele,
die gegenüber
dem Agraff-Schlauch neben einer erhöhten Standzeit auch geringere
Leckagen aufweisen, sind durch die Schriften
Aus
der
Die
Insbesondere für den Einsatz in Abgasanlagen von Nutzfahrzeugen sind gewickelte Metallschläuche besonders geeignet, da sie, im Gegensatz zu Metallbälgen, große Verschiebungen in axialer, lateraler und vor allem torsionaler Richtung ohne den Aufbau von Strukturspannungen entkoppeln können. Ihr Nachteil jedoch ist die verbleibende Restleckage.Especially for the Application in exhaust systems of commercial vehicles are particularly wound metal hoses suitable because, unlike metal bellows, they have large displacements in the axial, lateral and especially torsional direction without the construction of Decoupling structure stresses. you Disadvantage, however, is the remaining residual leakage.
Da weltweite gesetzliche Vorschriften den Schadstoff-Ausstoß von Nutzfahrzeugen zukünftig deutlich nach unten regulieren, werden Abgasanlagen zukünftig vermehrt mit Nachbehandlungsmodulen wie z.B. Rußpartikel-Filtern und SCR-Systemen ausgestattet werden. Eine verbleibende Restleckage, durch die nicht nachbehandeltes Abgas aus dem System entweichen kann, ist dann nur noch in eingeschränkter Form zulässig.There worldwide legal regulations pollutant emissions from commercial vehicles clearly in the future down regulate exhaust systems will in future increasingly with aftertreatment modules such as. Soot filters and SCR systems. A remaining residual leak, escape from the system through the untreated exhaust gas can, is then permissible only in a restricted form.
Aufgabe der Erfindung ist es daher, ein abgasdichtes Entkopplungselement aus Wickelschläuchen bereitzustellen, daß den Nachteil der Restleckage, d.h. des Austritts von Abgasen in die Umgebung, vermeidet und somit ihren zukünftigen Einsatz als entkoppelndes Element in Abgasanlagen sicherstellt. Bei der Erfüllung dieser Aufgabe sollen nach Möglichkeit alle Vorteile des Wickelschlauches, insbesondere das Entkoppeln große Verschiebungen in axialer, lateraler und vor allem torsionaler Richtung, uneingeschränkt erhalten bleiben.task The invention is therefore an exhaust-gas-tight decoupling element from winding tubes to provide that Disadvantage of residual leakage, i. the exit of exhaust gases in the Environment, avoids and thus their future use as a decoupling Ensures element in exhaust systems. In fulfilling this Task should as far as possible All advantages of the winding tube, especially the decoupling size Shifts in axial, lateral and especially torsional direction, received unrestricted stay.
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 sowie den erfinderischen Merkmalen des Anspruchs 14 gelöst.These Task is with the features of claim 1 and the inventive Characteristics of claim 14 solved.
Vorgesehen
ist eine Anordnung aus Wickelschläuchen, die Abgas-Leckagen,
d.h. einen Abgas-Austritt in die Umgebung, durch den aktiven Aufbau
eines Drucks in einem koaxial zum durchströmten Wickelschlauch (
Ein
nach dem beschriebenen Prinzip aufgebautes Entkopplungselement ermöglicht die
Verwendung von gewickelten Metallschläuchen in einer Anordnung, die
kein Abgas in die Umgebung dringen läßt. Beide in der Anordnung
integrierten Metallschläuche
weisen zwar eine Restleckage auf. Jedoch ist das entweichende Medium
Umgebungsluft, die entweder über
die Wandung des größeren Wickelschlauchs
in die Umgebung abgegeben oder aber über die Wandung des kleineren
Schlauchs in das Abgas eingetragen wird. Da unterschiedliche Profilgeometrien
des Wickelschlauchs a priori zu unterschiedlichen Leckagewerten
führen,
können
durch geeignete Kombinationen von Wickelschläuchen mit eingehakter Bindung,
Agraff-Schläuchen
sowie von Schlauchprofilen gemäß den bereits
genannten Patentschriften
Die
beschriebene Erfindung kann um verschiedene Sensorik- und Aktorik-Module ergänzt werden.
In einer Grundausführung
(
Gemäß
In einer dritten Variante wird zur Druckluft-Versorgung des Entkopplungselements aus Wickelschläuchen gereinigtes Abgas verwendet. Dieses wird an einer Stelle hinter der Abgasreinigung aus dem System entnommen. Da der Abgasstrom im Bereich hinter der Abgasreinigung stets einen geringeren Staudruck aufweisen wird als davor, ist die Integration eines geeigneten Verdichters erforderlich.In a third variant is the compressed air supply of the decoupling element from winding tubes cleaned exhaust gas used. This will be behind at one point the exhaust gas cleaning removed from the system. Since the exhaust gas flow in the range always have a lower dynamic pressure behind the exhaust gas cleaning As before, is the integration of a suitable compressor required.
Eine vierte Variante des Entkopplungselements aus Wickelschläuchen sieht die Druckluftversorgung durch den Fahrtwind mittels einem geeigneten RamAir oder einer Airbox sowie ggf. mittels eines geeigneten Verdichters vor.A fourth variant of the decoupling element sees from winding tubes the compressed air supply by the airstream by means of a suitable RamAir or an airbox and if necessary by means of a suitable compressor in front.
In
einer fünften
Variante werden gemäß
Im Zuge einer Anpassung auf einen speziellen Bedarfsfall sind auch Kombinationen der oben beschriebenen Varianten möglich. Alle beschriebenen Varianten können außerdem, was die Druckversorgung sowie Aktorik und Sensorik anbelangt, mit redundanten Komponenten versehen werden, um eine optimale Betriebssicherheit zu gewährleisten.in the Adaptation to a specific case of need is also Combinations of the variants described above possible. All variants described can in addition, as far as the pressure supply as well as actuator technology and sensor technology are concerned, with redundant ones Components are provided for optimum operational safety to ensure.
Neben dem Einsatz in den Abgasanlagen von Kraftfahrzeugen kann das beschriebene abgasdichte Entkopplungselement aus Wickelschläuchen gleichwohl in Industrieapplikationen, wie z.B. den Abgasanlagen stationärer Turbinen, Anwendung finden.Next the use in the exhaust systems of motor vehicles, the described exhaust gas-tight decoupling element from winding tubes, however, in industrial applications, such as. the exhaust systems of stationary turbines, find application.
Claims (14)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004026705A DE102004026705B4 (en) | 2004-05-28 | 2004-05-28 | Gas-tight decoupling unit for e.g. passenger car`s exhaust system, has hoses and edge units to form annular cavity between hoses with suitable pneumatic connection, which is pressurized in operating condition using ambient air |
| US11/140,607 US7571745B2 (en) | 2004-05-28 | 2005-05-27 | Exhaust-gastight decoupling element from stripwound hoses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004026705A DE102004026705B4 (en) | 2004-05-28 | 2004-05-28 | Gas-tight decoupling unit for e.g. passenger car`s exhaust system, has hoses and edge units to form annular cavity between hoses with suitable pneumatic connection, which is pressurized in operating condition using ambient air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102004026705A1 DE102004026705A1 (en) | 2005-12-29 |
| DE102004026705B4 true DE102004026705B4 (en) | 2006-04-13 |
Family
ID=35454837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102004026705A Expired - Fee Related DE102004026705B4 (en) | 2004-05-28 | 2004-05-28 | Gas-tight decoupling unit for e.g. passenger car`s exhaust system, has hoses and edge units to form annular cavity between hoses with suitable pneumatic connection, which is pressurized in operating condition using ambient air |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102004026705B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018102158A1 (en) | 2018-01-31 | 2019-08-01 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Exhaust duct means |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3441064C2 (en) * | 1984-11-09 | 1987-08-06 | Hille & Mueller Metallverarbeitung Werk Hilchenbach, 5912 Hilchenbach, De | |
| DE3804208A1 (en) * | 1988-02-11 | 1989-08-24 | Hille & Mueller | METAL HOSE ARRANGEMENT, ESPECIALLY WINDING OR CORRUGATED HOSE ARRANGEMENT FOR MOTOR VEHICLE EXHAUST PIPES |
| DE19717182A1 (en) * | 1997-04-24 | 1998-10-29 | Klenk Gmbh | Hose line, in particular for a fuel dispenser |
| DE19820863A1 (en) * | 1998-05-09 | 1999-11-18 | Witzenmann Metallschlauchfab | Flexible pipe element |
| DE10113180C2 (en) * | 2001-03-19 | 2003-03-13 | Westfalia Metallformtechnik Gm | Multi-layer hose made of profiled strip material |
-
2004
- 2004-05-28 DE DE102004026705A patent/DE102004026705B4/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3441064C2 (en) * | 1984-11-09 | 1987-08-06 | Hille & Mueller Metallverarbeitung Werk Hilchenbach, 5912 Hilchenbach, De | |
| DE3804208A1 (en) * | 1988-02-11 | 1989-08-24 | Hille & Mueller | METAL HOSE ARRANGEMENT, ESPECIALLY WINDING OR CORRUGATED HOSE ARRANGEMENT FOR MOTOR VEHICLE EXHAUST PIPES |
| DE19717182A1 (en) * | 1997-04-24 | 1998-10-29 | Klenk Gmbh | Hose line, in particular for a fuel dispenser |
| DE19820863A1 (en) * | 1998-05-09 | 1999-11-18 | Witzenmann Metallschlauchfab | Flexible pipe element |
| DE10113180C2 (en) * | 2001-03-19 | 2003-03-13 | Westfalia Metallformtechnik Gm | Multi-layer hose made of profiled strip material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018102158A1 (en) | 2018-01-31 | 2019-08-01 | Westfalia Metallschlauchtechnik Gmbh & Co. Kg | Exhaust duct means |
| DE102018102158B4 (en) | 2018-01-31 | 2024-12-12 | Westfalia Metal Hoses Gmbh | exhaust pipe system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004026705A1 (en) | 2005-12-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8364 | No opposition during term of opposition | ||
| R081 | Change of applicant/patentee |
Owner name: WESTFALIA METAL HOSES GMBH, DE Free format text: FORMER OWNER: WESTFALIA METALLSCHLAUCHTECHNIK GMBH & CO. KG, 57271 HILCHENBACH, DE |
|
| R082 | Change of representative |
Representative=s name: BECKMANN, JUERGEN, DIPL.-PHYS. DR.RER.NAT., DE |
|
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |