GB450398A - Improvements in and relating to silencers for internal combustion engines - Google Patents
Improvements in and relating to silencers for internal combustion enginesInfo
- 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
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.
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)
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 |
-
1934
- 1934-10-16 GB GB2957634A patent/GB450398A/en not_active Expired
Cited By (11)
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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