GB1522999A - Silencers for damping sound waves in gases - Google Patents

Silencers for damping sound waves in gases

Info

Publication number
GB1522999A
GB1522999A GB5227075A GB5227075A GB1522999A GB 1522999 A GB1522999 A GB 1522999A GB 5227075 A GB5227075 A GB 5227075A GB 5227075 A GB5227075 A GB 5227075A GB 1522999 A GB1522999 A GB 1522999A
Authority
GB
United Kingdom
Prior art keywords
inner tube
surrounded
damping
sound waves
silencers
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.)
Expired
Application number
GB5227075A
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.)
Saab AB
Original Assignee
Saab Scania AB
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 Saab Scania AB filed Critical Saab Scania AB
Priority to GB5227075A priority Critical patent/GB1522999A/en
Publication of GB1522999A publication Critical patent/GB1522999A/en
Expired 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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction

Abstract

1522999 Exhaust silencers SAAB-SCANIA AB 20 Dec 1975 52270/75 Heading F1B A silencer for damping sound waves in gases comprises a damping unit A having a tubular body 2 with end-walls 4, 5 through which an inner tube 1 passes in gas-tight fashion, the inner tube having openings to connect its inside with an annular chamber 6 which contains sound absorbent material 9, the tubular body 2 being surrounded by an outer tube 10 containing a space 13, 14 in communication with the inside of the inner tube via a transversely extending pipe 15 or 16. Three damping units A, B and C may be surrounded by two spaces 13 and 14, which may be separated by radial partitions 17, 18 or longitudinal partitions. The perforated portions of the inner tube are denoted by hatching. The perforations (101) are surrounded by collars (111) Fig. 2 (not shown).
GB5227075A 1975-12-20 1975-12-20 Silencers for damping sound waves in gases Expired GB1522999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5227075A GB1522999A (en) 1975-12-20 1975-12-20 Silencers for damping sound waves in gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5227075A GB1522999A (en) 1975-12-20 1975-12-20 Silencers for damping sound waves in gases

Publications (1)

Publication Number Publication Date
GB1522999A true GB1522999A (en) 1978-08-31

Family

ID=10463278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5227075A Expired GB1522999A (en) 1975-12-20 1975-12-20 Silencers for damping sound waves in gases

Country Status (1)

Country Link
GB (1) GB1522999A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500798A1 (en) * 2003-07-24 2005-01-26 J. Eberspächer GmbH Co. KG Silencer and exhaust system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1500798A1 (en) * 2003-07-24 2005-01-26 J. Eberspächer GmbH Co. KG Silencer and exhaust system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee