PL313581A1 - Method of making a sound absorbing element of bonded mineral wool for combustion engine silencers and sound absorbing element obtained thereby - Google Patents

Method of making a sound absorbing element of bonded mineral wool for combustion engine silencers and sound absorbing element obtained thereby

Info

Publication number
PL313581A1
PL313581A1 PL96313581A PL31358196A PL313581A1 PL 313581 A1 PL313581 A1 PL 313581A1 PL 96313581 A PL96313581 A PL 96313581A PL 31358196 A PL31358196 A PL 31358196A PL 313581 A1 PL313581 A1 PL 313581A1
Authority
PL
Poland
Prior art keywords
mineral wool
recess
sound absorbing
inner pipe
absorbing element
Prior art date
Application number
PL96313581A
Inventor
Fridolin Bissinger
Dirk Ottstadt
Original Assignee
Gruenzweig & Hartmann
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 Gruenzweig & Hartmann filed Critical Gruenzweig & Hartmann
Publication of PL313581A1 publication Critical patent/PL313581A1/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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

An absorption member (40) is formed as a board-type shaped article, particularly a punched member, which is made up of bound mineral wool and comprises at least one recess (46) for passage of an inner pipe (22) of a muffler (2). For the case that it is not possible to slip it onto the inner pipe (22) in an axial direction, a parting slit (47) is introduced at the periphery of the recess (46) at which the recess (46) may be bent open to receive the inner pipe. It was surprisingly found that the quite considerable deformation required for this purpose nevertheless does not result in disadvantageous destructions of the material structure, apparently because the deformation distributes more or less homogeneously over the entire inner periphery of the recess (46), whereby great deformation paths may be obtained at low stress peaks. The board-type design of the absorption members comprising opposite parallel major surfaces (52) as well as its design as a punched member further contribute to good, non-destructive deformability, as its formation from a mineral wool board as a punched member ensures the overwhelming majority of fibers being oriented transversely with respect to the bending axis and thus counteracts gaping fissures. It is thereby sufficiently ensured that following its closing around the inner pipe (22), a resilient return movement of the material takes place whereby the parting slit is closed, such that any subsequent work for entirely filling the inner cavity of the muffler (2) with mineral wool is avoided. <IMAGE>
PL96313581A 1995-04-03 1996-04-02 Method of making a sound absorbing element of bonded mineral wool for combustion engine silencers and sound absorbing element obtained thereby PL313581A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19512438A DE19512438A1 (en) 1995-04-03 1995-04-03 Mineral wool absorption part for sound absorption in an exhaust silencer, section therefor, its use and method for its production

Publications (1)

Publication Number Publication Date
PL313581A1 true PL313581A1 (en) 1996-10-14

Family

ID=7758658

Family Applications (1)

Application Number Title Priority Date Filing Date
PL96313581A PL313581A1 (en) 1995-04-03 1996-04-02 Method of making a sound absorbing element of bonded mineral wool for combustion engine silencers and sound absorbing element obtained thereby

Country Status (7)

Country Link
EP (1) EP0736674B1 (en)
AT (1) ATE191059T1 (en)
CZ (1) CZ90796A3 (en)
DE (2) DE19512438A1 (en)
HU (1) HUP9600796A3 (en)
PL (1) PL313581A1 (en)
SI (1) SI9600111A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10228246A1 (en) * 2002-06-25 2004-01-15 Behr Gmbh & Co. Exhaust gas heat exchanger and method for its production
CN113153506B (en) * 2021-05-25 2022-09-13 佛吉亚(柳州)排气控制技术有限公司 Automobile silencer structure convenient to disassemble and assemble

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072961A (en) * 1934-03-01 1937-03-09 Burgess Lab Inc C F Silencer
DE3826707A1 (en) * 1988-08-05 1990-02-08 Gruenzweig & Hartmann METHOD FOR PRODUCING AN EXHAUST MUFFLER
DE9012260U1 (en) * 1990-08-25 1990-11-08 Mussbach Metall Hackelsberger GmbH & Co, 6730 Neustadt Absorption moldings for motor vehicle exhaust systems
DE9401674U1 (en) * 1994-02-02 1994-04-21 Fa. J. Eberspächer, 73730 Esslingen Silencer, in particular exhaust silencer, for an engine-independent vehicle heater

Also Published As

Publication number Publication date
CZ90796A3 (en) 1996-10-16
HUP9600796A2 (en) 1996-10-28
EP0736674B1 (en) 2000-03-22
EP0736674A1 (en) 1996-10-09
HU9600796D0 (en) 1996-05-28
DE19512438A1 (en) 1996-10-10
SI9600111A (en) 1996-10-31
ATE191059T1 (en) 2000-04-15
DE69607229D1 (en) 2000-04-27
DE69607229T2 (en) 2000-09-07
HUP9600796A3 (en) 2000-02-28

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