JPS57153917A - Sound absorber - Google Patents

Sound absorber

Info

Publication number
JPS57153917A
JPS57153917A JP56041387A JP4138781A JPS57153917A JP S57153917 A JPS57153917 A JP S57153917A JP 56041387 A JP56041387 A JP 56041387A JP 4138781 A JP4138781 A JP 4138781A JP S57153917 A JPS57153917 A JP S57153917A
Authority
JP
Japan
Prior art keywords
sound absorber
binder
metal piece
porous metal
sound
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.)
Pending
Application number
JP56041387A
Other languages
Japanese (ja)
Inventor
Hidefusa Uchikawa
Hideharu Tanaka
Mutsuo Sekiya
Yasufumi Ohata
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56041387A priority Critical patent/JPS57153917A/en
Priority to US06/300,552 priority patent/US4352853A/en
Priority to DE8282101405T priority patent/DE3262251D1/en
Priority to EP19820101405 priority patent/EP0061008B1/en
Publication of JPS57153917A publication Critical patent/JPS57153917A/en
Pending legal-status Critical Current

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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0246—Coatings comprising a zeolite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PURPOSE:To improve the sound absorption performance of a sound absorber for the muffler of an internal combustion engine and prevent the clogging and corrosion of the sound absorber, by coating a porous metal piece with a heat- resisting binder containing a solid acid catalyst and by setting the binder. CONSTITUTION:A porous metal piece 1, which is unlikely to pulverize and break, is prepard as the body of a sound absorber. A heat-resisting binder 3 containing a solid acid catalyst 2 is painted and set on the porous metal piece 1 to suppress the clogging of tar and soot, improve the sound absorption performance of the sound absorber and prevent its corrosion due to high-temperature oxidation. The sound absorber is thus composed. To manufacture the sound absorber, a kneaded mixture including the binder 3 containing said catalyst 2 is painted on the porous metal piece and baked so that the mixture is set. In the sound absorber, the binder 3 containing the dispersed solid acid catalyst grains 2 is provided in the pores of the porous metal piece 1 and a porous coating 4 is provided on the metal piece, the binder and the catalyst.
JP56041387A 1981-03-17 1981-03-17 Sound absorber Pending JPS57153917A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56041387A JPS57153917A (en) 1981-03-17 1981-03-17 Sound absorber
US06/300,552 US4352853A (en) 1981-03-17 1981-09-09 Sound absorber
DE8282101405T DE3262251D1 (en) 1981-03-17 1982-02-24 Sound absorber
EP19820101405 EP0061008B1 (en) 1981-03-17 1982-02-24 Sound absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041387A JPS57153917A (en) 1981-03-17 1981-03-17 Sound absorber

Publications (1)

Publication Number Publication Date
JPS57153917A true JPS57153917A (en) 1982-09-22

Family

ID=12606967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041387A Pending JPS57153917A (en) 1981-03-17 1981-03-17 Sound absorber

Country Status (1)

Country Link
JP (1) JPS57153917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190510A (en) * 1982-04-08 1983-11-07 ユニオン・カーバイド・コーポレーション Suppression of corrosion of muffler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024184A (en) * 1973-06-21 1975-03-15
JPS5088422A (en) * 1973-12-13 1975-07-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024184A (en) * 1973-06-21 1975-03-15
JPS5088422A (en) * 1973-12-13 1975-07-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190510A (en) * 1982-04-08 1983-11-07 ユニオン・カーバイド・コーポレーション Suppression of corrosion of muffler
JPH0370092B2 (en) * 1982-04-08 1991-11-06 Yunion Kaabaido Chem Ando Purasuchitsukusu Co Inc

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