GB450398A - Improvements in and relating to silencers for internal combustion engines - Google Patents

Improvements in and relating to silencers for internal combustion engines

Info

Publication number
GB450398A
GB450398A GB2957634A GB2957634A GB450398A GB 450398 A GB450398 A GB 450398A GB 2957634 A GB2957634 A GB 2957634A GB 2957634 A GB2957634 A GB 2957634A GB 450398 A GB450398 A GB 450398A
Authority
GB
United Kingdom
Prior art keywords
expansion chamber
pipe
silencers
relating
internal combustion
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
GB2957634A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2957634A priority Critical patent/GB450398A/en
Publication of GB450398A publication Critical patent/GB450398A/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
    • 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
    • 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

Landscapes

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

Abstract

450,398. Acoustic attenuators. GRIFFITH, A. A., Royal Aircraft Establishment, South Farnborough, Hampshire. Oct. 16, 1934, No. 29576. [Class 13] [See also Group XXVII] In exhaust or intake silencers having expansion chambers, a number of high - frequency acoustic filters are arranged in parallel between the engine and the expansion chamber, so as to attenuate a band of frequencies which coincide with the natural frequency of vibration of the shell of the expansion chamber. The Figure shows a pipe 1 leading from the engine into an expansion chamber 2 having an outlet at 3, the acoustic filters being formed by an intermediate pipe 4 and partitions 5 ... 8 with perforations as shown in the pipes 1 and 4. In a modification, the pipe 1 may be continuous through the expansion chamber, and a silencer so constructed may be used in series with a silencer as shown.
GB2957634A 1934-10-16 1934-10-16 Improvements in and relating to silencers for internal combustion engines Expired GB450398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2957634A GB450398A (en) 1934-10-16 1934-10-16 Improvements in and relating to silencers for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2957634A GB450398A (en) 1934-10-16 1934-10-16 Improvements in and relating to silencers for internal combustion engines

Publications (1)

Publication Number Publication Date
GB450398A true GB450398A (en) 1936-07-16

Family

ID=10293696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2957634A Expired GB450398A (en) 1934-10-16 1934-10-16 Improvements in and relating to silencers for internal combustion engines

Country Status (1)

Country Link
GB (1) GB450398A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353627A (en) * 1965-02-16 1967-11-21 Walker Mfg Co Muffler with concentric tubes forming helmholtz chambers
US3741336A (en) * 1971-06-10 1973-06-26 Tenneco Inc Expansion type silencer
EP1371824A1 (en) * 2002-06-11 2003-12-17 Siemens Aktiengesellschaft Device for purifying exhaust gas of a combustion system
WO2017012839A1 (en) * 2015-07-23 2017-01-26 Mann+Hummel Gmbh Silencer and vehicle engine including same
CN106907351A (en) * 2017-04-26 2017-06-30 广东美的制冷设备有限公司 Spiral case, blower fan and air-conditioner
CN107345679A (en) * 2017-07-28 2017-11-14 青岛海尔智能技术研发有限公司 A kind of denoising device and the range hood with the denoising device
CN108240647A (en) * 2017-10-31 2018-07-03 宁波方太厨具有限公司 A kind of frequency conversion noise reduction outlet housing of range hood
CN112318876A (en) * 2020-10-12 2021-02-05 李冉 3D prints silencing device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353627A (en) * 1965-02-16 1967-11-21 Walker Mfg Co Muffler with concentric tubes forming helmholtz chambers
US3741336A (en) * 1971-06-10 1973-06-26 Tenneco Inc Expansion type silencer
EP1371824A1 (en) * 2002-06-11 2003-12-17 Siemens Aktiengesellschaft Device for purifying exhaust gas of a combustion system
WO2017012839A1 (en) * 2015-07-23 2017-01-26 Mann+Hummel Gmbh Silencer and vehicle engine including same
CN106368863A (en) * 2015-07-23 2017-02-01 曼胡默尔有限责任公司 Silencer and air inlet system comprising silencer
US10907517B2 (en) 2015-07-23 2021-02-02 Mann+Hummel Gmbh Silencer and vehicle engine including same
CN106907351A (en) * 2017-04-26 2017-06-30 广东美的制冷设备有限公司 Spiral case, blower fan and air-conditioner
CN107345679A (en) * 2017-07-28 2017-11-14 青岛海尔智能技术研发有限公司 A kind of denoising device and the range hood with the denoising device
CN108240647A (en) * 2017-10-31 2018-07-03 宁波方太厨具有限公司 A kind of frequency conversion noise reduction outlet housing of range hood
CN108240647B (en) * 2017-10-31 2023-11-17 宁波方太厨具有限公司 Variable-frequency noise-reduction air outlet cover of range hood
CN112318876A (en) * 2020-10-12 2021-02-05 李冉 3D prints silencing device

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