EP0226022A1 - Kombinierter Schall- und Schwingungsdämpfer - Google Patents

Kombinierter Schall- und Schwingungsdämpfer Download PDF

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Publication number
EP0226022A1
EP0226022A1 EP86115307A EP86115307A EP0226022A1 EP 0226022 A1 EP0226022 A1 EP 0226022A1 EP 86115307 A EP86115307 A EP 86115307A EP 86115307 A EP86115307 A EP 86115307A EP 0226022 A1 EP0226022 A1 EP 0226022A1
Authority
EP
European Patent Office
Prior art keywords
gas inlet
silencer
chamber
muffler
vibration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86115307A
Other languages
German (de)
English (en)
French (fr)
Inventor
Michael Mohrenstein-Ertel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of EP0226022A1 publication Critical patent/EP0226022A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2875—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using elastic means, e.g. spring leaves, for retaining catalyst body in the housing
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/12—Tubes being corrugated

Definitions

  • the invention relates to a muffler, in particular for internal combustion engines, with a muffler chamber and with a gas inlet and outlet pipe.
  • the mufflers which are arranged in particular in exhaust systems of internal combustion engines, are optimized with regard to their sound-absorbing effect on the periodic exhaust emissions, the position of the muffler in the line additionally determining the quality of the damping.
  • the connection between the silencer or silencers and the line pipes is designed to be rigid and gas-tight. Due to the large length of the exhaust systems, vibration problems often occur, which can only be alleviated by carefully choosing the suspension points and, if necessary, by taking additional vibration-damping measures. Particularly vibration-sensitive parts of the exhaust system, such as Catalysts require special vibration-isolating measures, which are often supplemented by additional flexible elements in the connecting pipes.
  • the invention has set itself the task of creating a silencer, in particular for internal combustion engines, which significantly simplifies the construction of exhaust systems with regard to the vibration problems that occur. This object is achieved by a muffler designed according to the characterizing features of claim 1.
  • the muffler according to the invention acts both as a result of its vibration-insulated and damped muffler chamber from the connecting pipes Silencer for airborne sound as well as a vibration damper against vibrations of the entire exhaust system.
  • the non-rigid connection between the muffler chamber and the gas inlet and outlet pipe also enables greater tolerances when installing the entire exhaust system.
  • the choice of the suspension or fastening points of the exhaust system equipped with such a silencer is relatively uncritical and can essentially be statically matched to the weight distribution.
  • the silencer 1 is between the connecting pipes V1 and V2 an exhaust system for an internal combustion engine, a muffler 1.
  • the silencer 1 is a gas inlet pipe 2 and a gas outlet pipe 3 with the connecting pipes V1 and V2 in a conventional manner via a clampable connector rigid and gas-tight connected is.
  • the actual muffler chamber 4 is located between the gas inlet pipe 2 and the gas outlet pipe 3 and can be designed in a conventional manner, for example as a reflection or absorption muffler.
  • the muffler chamber 4 is connected to the gas inlet and outlet pipes 2 and 3 in a vibration-insulated manner via tubular connecting elements 4.1 and 4.2, so that their inert mass M is opposite the gas inlet and outlet pipes -Exit pipe 2 and 3 or the connecting pipes V1 and V2 can move relatively in the axial and radial directions, which is indicated by the intersecting double arrows. This relative movement is damped by vibration-damping materials 8 in the space between the gas inlet or outlet pipe 2 or 3 and the tubular transition elements 4.1 or 4.2.
  • the silencer chamber 4 can additionally be surrounded by a comparatively thin and light outer jacket 5, which in turn is firmly and gas-tightly connected to the gas inlet and outlet pipes 2 and 3. Further vibration-damping measures acting on the muffler chamber 4, for example a filling with mineral wool, can be provided on the outer jacket 5, which measures also have heat-insulating properties.
  • the gas inlet pipe 2 shows the gas inlet side of a muffler with vibration-insulated and vibration-damping muffler chamber 4.
  • the gas inlet pipe 2 has at its outlet end two ring disk elements 2.1 and 2.2, which are arranged at axial intervals and are fixedly connected to the gas inlet pipe 2.
  • a tubular connecting element 4.1 of the muffler chamber 4 envelops the gas inlet pipe 2 and the disk elements 2.1 and 2.2 in the manner of a labyrinth seal while maintaining a meandering space.
  • This intermediate space is filled with a vibration-damping material 5, for example mineral, ceramic, metal fibers or a mixture of two or more of these components.
  • elastic plastics can also be used, which then enable complete gas tightness.
  • the silencer chamber 4 and the connector 4.1 are from an outer jacket 5, which is gas-tight and firmly connected to the gas inlet tube 2.
  • the space between the silencer chamber 4 and the outer casing 5 is in turn filled with a vibration-damping material 6, which should advantageously also have heat-insulating properties. Mineral or ceramic fibers are also suitable here.
  • the walls of the muffler chamber 4 are largely resistant to bending, the walls of the outer jacket should be relatively thin and flexible and, if necessary, be designed in part in the manner of a corrugated pipe (5.1). With this measure, larger tolerances are also possible with regard to the axial alignment between the gas inlet pipe 2 and the connecting pipe (not shown) connected to it.
  • the muffler chamber 4 is vibration-insulated and damped from the connecting pipes, it can easily handle vibration-sensitive parts such as e.g. Means for the catalytic afterburning of exhaust gases, for example, a ceramic-based catalyst 7, which is held by spring elements 9, 10 and 11.
  • vibration-sensitive parts such as e.g. Means for the catalytic afterburning of exhaust gases, for example, a ceramic-based catalyst 7, which is held by spring elements 9, 10 and 11.
  • the known means 12 for sound attenuation such as reflection mufflers or absorption mufflers, with Helmholtz resonators, reflection screens, Venturi nozzles, perforated eaves and the like.
  • the gas outlet side is then again designed analogously to the gas inlet side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
EP86115307A 1985-11-13 1986-11-05 Kombinierter Schall- und Schwingungsdämpfer Withdrawn EP0226022A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853540231 DE3540231A1 (de) 1985-11-13 1985-11-13 Kombinierter schall- und schwingungsdaempfer
DE3540231 1985-11-13

Publications (1)

Publication Number Publication Date
EP0226022A1 true EP0226022A1 (de) 1987-06-24

Family

ID=6285868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115307A Withdrawn EP0226022A1 (de) 1985-11-13 1986-11-05 Kombinierter Schall- und Schwingungsdämpfer

Country Status (2)

Country Link
EP (1) EP0226022A1 (enrdf_load_stackoverflow)
DE (1) DE3540231A1 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653491A1 (fr) * 1989-10-24 1991-04-26 Wimetal Sa Ligne d'echappement notamment pour vehicule automobile.
FR2668539A1 (fr) * 1990-10-24 1992-04-30 Bronzavia Aeronautique Sa Silencieux d'echappement.
US6892854B2 (en) * 1992-06-02 2005-05-17 Donaldson Company, Inc. Muffler with catalytic converter arrangement; and method
DE102005003582A1 (de) * 2005-01-26 2006-08-03 Dr.Ing.H.C. F. Porsche Ag Schalldämpfer für eine Abgasanlage
US7451594B2 (en) 2004-10-01 2008-11-18 Donaldson Company, Inc. Exhaust flow distribution device
US8110151B2 (en) 2006-04-03 2012-02-07 Donaldson Company, Inc. Exhaust flow distribution device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9406596U1 (de) * 1994-04-20 1994-07-28 Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart Schalldämpfer
DE10021809C1 (de) * 2000-05-04 2001-11-15 Daimler Chrysler Ag Fügeverbindung eines Rohres in einem Flansch
EP2045451B1 (de) * 2007-10-01 2012-12-12 BDD Beteiligungs GmbH Isoliervorrichtung eines Kompensators

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2081546A (en) * 1934-03-29 1937-05-25 Hupp Motor Car Corp Muffler mounting
GB1093180A (en) * 1964-03-16 1967-11-29 Corning Glass Works Acoustical device for suppressing noise in a gas stream
GB1395960A (en) * 1971-09-13 1975-05-29 Ford Motor Co Catalytic converter
DE2701022A1 (de) * 1977-01-12 1978-07-13 Volkswagenwerk Ag Gasdichte rohrverbindung, insbesondere fuer eine abgasleitung
DE3026730A1 (de) * 1980-07-15 1982-02-04 Adam Opel AG, 6090 Rüsselsheim Auspuffanlage
DE3137746A1 (de) * 1981-09-23 1983-06-09 Volkswagenwerk Ag, 3180 Wolfsburg "abgasanlage fuer die brennkraftmaschine eines fahrzeugs"
US4540064A (en) * 1982-03-17 1985-09-10 Nissan Motor Co., Ltd. Noise and vibration reducing apparatus for use in exhaust system of engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2137699A1 (de) * 1971-07-28 1973-02-08 Boysen Friedrich Kg Mit einem isoliermantel versehene rohrleitung fuer heisse medien, insbesondere thermischer reaktor in abgasleitungen von brennkraftmaschinen od.dgl

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2081546A (en) * 1934-03-29 1937-05-25 Hupp Motor Car Corp Muffler mounting
GB1093180A (en) * 1964-03-16 1967-11-29 Corning Glass Works Acoustical device for suppressing noise in a gas stream
GB1395960A (en) * 1971-09-13 1975-05-29 Ford Motor Co Catalytic converter
DE2701022A1 (de) * 1977-01-12 1978-07-13 Volkswagenwerk Ag Gasdichte rohrverbindung, insbesondere fuer eine abgasleitung
DE3026730A1 (de) * 1980-07-15 1982-02-04 Adam Opel AG, 6090 Rüsselsheim Auspuffanlage
DE3137746A1 (de) * 1981-09-23 1983-06-09 Volkswagenwerk Ag, 3180 Wolfsburg "abgasanlage fuer die brennkraftmaschine eines fahrzeugs"
US4540064A (en) * 1982-03-17 1985-09-10 Nissan Motor Co., Ltd. Noise and vibration reducing apparatus for use in exhaust system of engine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653491A1 (fr) * 1989-10-24 1991-04-26 Wimetal Sa Ligne d'echappement notamment pour vehicule automobile.
FR2668539A1 (fr) * 1990-10-24 1992-04-30 Bronzavia Aeronautique Sa Silencieux d'echappement.
US6892854B2 (en) * 1992-06-02 2005-05-17 Donaldson Company, Inc. Muffler with catalytic converter arrangement; and method
US7451594B2 (en) 2004-10-01 2008-11-18 Donaldson Company, Inc. Exhaust flow distribution device
US7997071B2 (en) 2004-10-01 2011-08-16 Donaldson Company, Inc. Exhaust flow distribution device
DE102005003582A1 (de) * 2005-01-26 2006-08-03 Dr.Ing.H.C. F. Porsche Ag Schalldämpfer für eine Abgasanlage
US7438157B2 (en) 2005-01-26 2008-10-21 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Muffler for an exhaust gas system
US8110151B2 (en) 2006-04-03 2012-02-07 Donaldson Company, Inc. Exhaust flow distribution device
US8470253B2 (en) 2006-04-03 2013-06-25 Donaldson Company, Inc. Exhaust flow distribution device

Also Published As

Publication number Publication date
DE3540231A1 (de) 1987-05-14
DE3540231C2 (enrdf_load_stackoverflow) 1987-10-22

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Inventor name: MOHRENSTEIN-ERTEL, MICHAEL