SE8500785D0 - SOUND DUMPING EXHAUST PIPE AND PROCEDURES FOR PRODUCING THEREOF - Google Patents

SOUND DUMPING EXHAUST PIPE AND PROCEDURES FOR PRODUCING THEREOF

Info

Publication number
SE8500785D0
SE8500785D0 SE8500785A SE8500785A SE8500785D0 SE 8500785 D0 SE8500785 D0 SE 8500785D0 SE 8500785 A SE8500785 A SE 8500785A SE 8500785 A SE8500785 A SE 8500785A SE 8500785 D0 SE8500785 D0 SE 8500785D0
Authority
SE
Sweden
Prior art keywords
sound
conduit
core
sleeve
exhaust
Prior art date
Application number
SE8500785A
Other languages
Swedish (sv)
Other versions
SE8500785L (en
SE446647B (en
Inventor
Sven Olof Malmsten
Original Assignee
Malmsten Sven O
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 Malmsten Sven O filed Critical Malmsten Sven O
Priority to SE8500785A priority Critical patent/SE446647B/en
Publication of SE8500785D0 publication Critical patent/SE8500785D0/en
Priority to PCT/SE1986/000064 priority patent/WO1986004954A1/en
Publication of SE8500785L publication Critical patent/SE8500785L/en
Publication of SE446647B publication Critical patent/SE446647B/en

Links

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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
    • F01N1/125—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels in combination with sound-absorbing 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing 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
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements

Landscapes

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

Abstract

A sound-absorptive or sound-moderating exhaust-gas conduit connects between the exhaust manifold of a forwardly mounted internal combustion engine of an automobile and a location at the rear of the vehicle. The exhaust conduit has a substantially constant outer diameter along the whole of its length and can be bent so as to impart thereto a configuration suitable for the automobile in question. The conduit includes a tubular core, comprising two coaxial, metal wire helices (11, 13) between which a metal-net sleeve (12) is held. The tubular core (1) is encircled along the whole of its length by a coaxial sound absorbent (2), comprising for example mineral wool, which in turn is embraced by an impervious casing (3). As a result of its construction the conduit can be bent or curved to desired configurations while retaining its free gas-through flow area. A method of manufacturing the tubular conduit comprises forming the core (1) by helically winding metal wires (11, 13) coaxially with one another while placing therebetween a helically wound net-web sleeve (12) with mutually adjacent turns of the sleeve overlapping one another, this core then being fitted with the absorbent and casing.
SE8500785A 1985-02-19 1985-02-19 SOUND-EMERGENCY EXHAUST PIPE AND PRODUCTION THEREOF SE446647B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8500785A SE446647B (en) 1985-02-19 1985-02-19 SOUND-EMERGENCY EXHAUST PIPE AND PRODUCTION THEREOF
PCT/SE1986/000064 WO1986004954A1 (en) 1985-02-19 1986-02-14 A sound absorptive exhaust-gas conduit and a method for its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8500785A SE446647B (en) 1985-02-19 1985-02-19 SOUND-EMERGENCY EXHAUST PIPE AND PRODUCTION THEREOF

Publications (3)

Publication Number Publication Date
SE8500785D0 true SE8500785D0 (en) 1985-02-19
SE8500785L SE8500785L (en) 1986-08-20
SE446647B SE446647B (en) 1986-09-29

Family

ID=20359180

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8500785A SE446647B (en) 1985-02-19 1985-02-19 SOUND-EMERGENCY EXHAUST PIPE AND PRODUCTION THEREOF

Country Status (2)

Country Link
SE (1) SE446647B (en)
WO (1) WO1986004954A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256006B (en) * 1991-05-21 1995-02-22 Harbury Holdings Inc An exhaust system and a silencer therefor
DE4403099A1 (en) * 1994-02-02 1995-08-03 Eberspaecher J Silencer, in particular exhaust silencer, for an engine-independent vehicle heater
IT1291268B1 (en) * 1997-02-07 1998-12-30 Danieli Off Mecc SOUNDPROOF SMOKE EVACUATION DUCT
DE19901150A1 (en) 1999-01-14 2000-07-27 Zeuna Staerker Kg Method and device for producing an absorption silencer
ES2230992B1 (en) * 2003-05-09 2006-08-01 Grupo De Aplicaciones Y Mantenimiento Ecologico, S.L. PERFECTED ACOUSTIC SILENCER.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU412407B1 (en) * 1966-05-16 1971-04-20 Vulcan Australia Limited Insulated ducting
GB1441742A (en) * 1972-08-15 1976-07-07 Smiths Industries Ltd Tubing

Also Published As

Publication number Publication date
WO1986004954A1 (en) 1986-08-28
SE8500785L (en) 1986-08-20
SE446647B (en) 1986-09-29

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