EP0056604A2 - Silencieux d'échappement pour moteurs à combustion interne et procédé pour sa fabrication - Google Patents

Silencieux d'échappement pour moteurs à combustion interne et procédé pour sa fabrication Download PDF

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Publication number
EP0056604A2
EP0056604A2 EP82100166A EP82100166A EP0056604A2 EP 0056604 A2 EP0056604 A2 EP 0056604A2 EP 82100166 A EP82100166 A EP 82100166A EP 82100166 A EP82100166 A EP 82100166A EP 0056604 A2 EP0056604 A2 EP 0056604A2
Authority
EP
European Patent Office
Prior art keywords
outer housing
aluminum
exhaust silencer
produced
layer
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Withdrawn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
EP82100166A
Other languages
German (de)
English (en)
Other versions
EP0056604A3 (fr
Inventor
Otto Dr. Ing. Daude
Heinz Peckmann
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.)
Novelis Deutschland GmbH
Original Assignee
Alcan Aluminiumwerke GmbH
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 Alcan Aluminiumwerke GmbH filed Critical Alcan Aluminiumwerke GmbH
Publication of EP0056604A2 publication Critical patent/EP0056604A2/fr
Publication of EP0056604A3 publication Critical patent/EP0056604A3/fr
Withdrawn legal-status Critical Current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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • 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
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/06—Aluminium or alloys thereof
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/26—Multi-layered walls

Definitions

  • the invention relates to an exhaust muffler for internal combustion engines, consisting of an internal structure, e.g. comprises a central pipe system guiding the gas flow, and a substantially tubular outer housing made of aluminum or an aluminum alloy, and method for producing such an exhaust gas silencer.
  • the outer housing of a known exhaust muffler of the construction in question (DE-OS 25 20 301) is manufactured in that the two pipe sections that make up the outer housing and which have a seamlessly transitioning base at one end and a connecting piece that also proceeds seamlessly , be hammered round.
  • the round hammering can be carried out over a mandrel or also without a mandrel as cold forming or hot forming.
  • This design not only requires expensive tools, but is also labor-intensive and complicated.
  • the bottom can only run conically outwards up to approximately 45 °, so that the production of other shapes for the bottom, for example a bottom running essentially perpendicular to the pipe axis, is excluded with this manufacturing technology.
  • an exhaust gas silencer of the presupposed type in that the inner construction, for example the central pipe system, is designed as a structural element which carries the load alone. while the outer casing, which is made of aluminum or an aluminum alloy, forms an envelope that exclusively delimits the functional space of the exhaust silencer and is supported on the load-bearing inner construction, for example the central pipe system.
  • the conception according to the invention therefore consists in the internal construction, e.g. to assign the function of the static and dynamic stiffening of the exhaust silencer to the central pipe system, which serves to guide the hot exhaust gases and to disperse the pulsating pressure energy.
  • this inner construction consists of suitable, surface-protected steel materials.
  • the outer casing which is made of aluminum or an aluminum alloy, forms only a casing (packaging) that delimits the functional space of the exhaust silencer.
  • the aluminum material fulfills this task in a suitable alloy variety under the temperature and corrosion conditions prevailing on this component and, due to its simple formability and its lower specific weight compared to conventional materials, brings out the desired advantages in terms of manufacturing technology and weight. With the mixed construction according to the invention, the desired cost and weight savings are achieved and at the same time the trouble-free operating times are increased.
  • the shell-like outer housing then advantageously consists of aluminum of the alloy Al 99.5 or purer. This choice of material does justice to the temperature and corrosion conditions prevailing on the outer housing as well as the mechanical stresses.
  • a particularly preferred embodiment of the exhaust muffler according to the invention consists in the fact that the shell-like outer housing is constructed from a double layer of two aluminum alloys.
  • the conditions prevailing both inside and outside the outer housing can be met in a particularly flexible manner.
  • the inner layer of this outer housing consists of the alloy Al 99.5 or pure, while the outer layer of the outer housing is formed by a salt-water-resistant Al alloy, for example AlMg2. so that the outer housing withstands the attacks from the outside when operating a motor vehicle over a long operating time.
  • the shell-like outer housing can consist of an aluminum wrought alloy coated on the inside and / or outside.
  • the invention also teaches particularly advantageous methods for producing shell-like outer housings for exhaust gas silencers designed according to the invention.
  • an advantageous method for producing a double-layered outer casing is that the double-layered outer casing or its components is or are produced by pressing together (cold extrusion) two separately produced slugs of the corresponding alloy.
  • a second variant is that the double layer of two Al alloys is produced by pressing (cold extrusion) a butt made of a clad material.
  • Another method for producing a single-layer, coated or double-layer outer housing can be seen in the fact that the outer housing or the components of which are or are produced by pressing (deep-drawing) metal sheets or from plated material of the alloys mentioned. This method of production is particularly suitable for outer housings that are divided parallel to their longitudinal axis.
  • a further method for producing a double-layered outer housing is characterized in that the double-layered outer housing or its components is or are produced by a precisely fitting pushing together of two individually extruded sleeves.
  • Conventional tools can be used for this manufacturing process, so that there is no investment in this regard.
  • an exhaust muffler of the construction according to the invention in the example a rear muffler of a motor vehicle, comprises a central exhaust pipe, designated overall by 10, which is concentrically surrounded by an overall cylindrical housing, generally designated 20.
  • the central pipe .10 takes on the static and dynamic stiffening of the entire exhaust silencer and is designed for this purpose in terms of strength and long enough that it can take over the connection to the connecting pipes.
  • the length of the central tube 10 is greater than the length of the outer housing 20, so that the central tube 10 projects beyond the outer housing 20 on both sides and directly receives the connecting tubes.
  • the central tube 10 is provided in the usual way in the area of the outer housing 20 with bores 11 through which the combustion gases can enter the space between the central tube and the outer housing 20, by means suitable for sound absorption.
  • the central tube 10 expediently consists of a suitable, surface-protected steel material which, together with the remaining configuration of the central tube 10, ensures the corresponding strength values.
  • the outer housing 20 consists of two essentially identical tubular sections, which are designated by 30 in total.
  • Each pipe section 30 comprises a cylindrical part 31, which at one end merges seamlessly into a base 32, from which a connecting piece 33 also flows seamlessly.
  • the two pipe sections 30 are connected to one another at their two abutting ends by a fold 34.
  • the pipe sections 30 are supported on the supporting construction constructed as a central tube 10 to an exterior about their stub 33 and on the other hand via a disc 35 from which is arranged perpendicular to the axis of the central tube 10 and the outer casing 20 and with its Edge is folded into the fold 34 of the outer housing and rests with its inner edge on the outside of the central tube 10.
  • the tube sections 30 of the outer housing 10 are made of the aluminum alloy or pure and 99.5 are advantageously produced in a altf doublpreßvorgang K.
  • the outer housing 20 merely represents a shell for delimiting the functional space of the exhaust silencer and does not perform any essential strength functions for the overall arrangement.
  • FIG. 2 shows schematically a double-layer design of an outer housing, designated overall by 40, for an exhaust gas silencer according to the invention.
  • the inner layer, designated 41, of this outer housing 40 consists of the alloy Al 99.5 or less, while the outer layer 42 is formed by a salt water-resistant Al alloy, for example AlMg2.
  • This double-layer outer housing 40 can be produced by the methods which have already been described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP82100166A 1981-01-16 1982-01-12 Silencieux d'échappement pour moteurs à combustion interne et procédé pour sa fabrication Withdrawn EP0056604A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3101252 1981-01-16
DE19813101252 DE3101252A1 (de) 1981-01-16 1981-01-16 Abgasschalldaempfer fuer brennkraftmaschinen und verfahren zu dessen herstellung

Publications (2)

Publication Number Publication Date
EP0056604A2 true EP0056604A2 (fr) 1982-07-28
EP0056604A3 EP0056604A3 (fr) 1982-08-11

Family

ID=6122752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100166A Withdrawn EP0056604A3 (fr) 1981-01-16 1982-01-12 Silencieux d'échappement pour moteurs à combustion interne et procédé pour sa fabrication

Country Status (5)

Country Link
EP (1) EP0056604A3 (fr)
JP (1) JPS57137615A (fr)
AR (1) AR227457A1 (fr)
BR (1) BR8200222A (fr)
DE (1) DE3101252A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159468B1 (fr) * 1984-04-25 1989-04-05 INTERATOM Gesellschaft mit beschränkter Haftung Support pour catalyseur de gaz d'échappement en tôles d'acier résistant à la chaleur contenant de l'aluminium et procédé pour sa production
EP0395540A1 (fr) * 1989-04-25 1990-10-31 DEVIL (Société anonyme) Silencieux modulaire
WO1993019287A1 (fr) * 1992-10-02 1993-09-30 Declerq Paul E A Silencieux normalises en arete de poisson pour moteurs a combustion (interne)
WO2003044345A1 (fr) * 2001-11-20 2003-05-30 Norsk Hydro Asa Systeme d'echappement et procede de production de ce systeme
EP2639423B1 (fr) 2012-03-15 2016-06-22 Eberspächer Exhaust Technology GmbH & Co. KG Silencieux d'échappement
WO2022101044A1 (fr) * 2020-11-16 2022-05-19 Umfotec Gmbh Réducteur de bruit et son procédé de production

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176415A (ja) * 1983-03-28 1984-10-05 Kazuhiko Ida 自動車用マフラ−
JPS60185038U (ja) * 1984-05-21 1985-12-07 日本電子機器株式会社 アイドルスピ−ドコントロ−ルバルブ
JPS6110919U (ja) * 1984-06-25 1986-01-22 スズキ株式会社 軽合金板製マフラ
JPH0442492Y2 (fr) * 1986-08-22 1992-10-07
RU2156868C1 (ru) * 1999-03-23 2000-09-27 Открытое акционерное общество "Ижорские заводы" Шумоглушитель

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1018594A (fr) * 1950-05-25 1953-01-09 Perfectionnements apportés aux dispositifs de détente des gaz d'échappement des moteurs
FR1414167A (fr) * 1963-10-24 1965-10-15 Walker Mfg Co Pot d'échappement
CH647302A5 (de) * 1979-06-06 1985-01-15 Alusuisse Vorrichtung zum ableiten der abgase von verbrennungskraftmaschinen.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159468B1 (fr) * 1984-04-25 1989-04-05 INTERATOM Gesellschaft mit beschränkter Haftung Support pour catalyseur de gaz d'échappement en tôles d'acier résistant à la chaleur contenant de l'aluminium et procédé pour sa production
EP0395540A1 (fr) * 1989-04-25 1990-10-31 DEVIL (Société anonyme) Silencieux modulaire
US5020631A (en) * 1989-04-25 1991-06-04 Devil, Societe Anonyme Modular silencer
WO1993019287A1 (fr) * 1992-10-02 1993-09-30 Declerq Paul E A Silencieux normalises en arete de poisson pour moteurs a combustion (interne)
WO2003044345A1 (fr) * 2001-11-20 2003-05-30 Norsk Hydro Asa Systeme d'echappement et procede de production de ce systeme
EP2639423B1 (fr) 2012-03-15 2016-06-22 Eberspächer Exhaust Technology GmbH & Co. KG Silencieux d'échappement
WO2022101044A1 (fr) * 2020-11-16 2022-05-19 Umfotec Gmbh Réducteur de bruit et son procédé de production
CN116348663A (zh) * 2020-11-16 2023-06-27 尤姆弗泰克声学解决方案有限公司 消音器及其制造方法

Also Published As

Publication number Publication date
AR227457A1 (es) 1982-10-29
DE3101252A1 (de) 1982-09-02
EP0056604A3 (fr) 1982-08-11
BR8200222A (pt) 1982-11-09
JPS57137615A (en) 1982-08-25

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Inventor name: DAUDE, OTTO, DR. ING.