GB1462841A - Pulsating gas flow system including a sound attenuating pulse converter - Google Patents

Pulsating gas flow system including a sound attenuating pulse converter

Info

Publication number
GB1462841A
GB1462841A GB170274A GB170274A GB1462841A GB 1462841 A GB1462841 A GB 1462841A GB 170274 A GB170274 A GB 170274A GB 170274 A GB170274 A GB 170274A GB 1462841 A GB1462841 A GB 1462841A
Authority
GB
United Kingdom
Prior art keywords
gas flow
inertance
compliance
volumes
chambers
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
GB170274A
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.)
Tenneco Inc
Original Assignee
Tenneco Inc
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 Tenneco Inc filed Critical Tenneco Inc
Publication of GB1462841A publication Critical patent/GB1462841A/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
    • 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
    • F01N13/02—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 having two or more separate silencers in series
    • 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
    • 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
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

1462841 Exhaust silencers TENNECO Inc 14 Jan 1974 [14 March 1973] 01702/74 Heading F1B An engine or other source of acoustic pulsations is combined with a gas flow system and is such that when being operated to produce maximum noise, it produces a sound pressure pulse providing points of maximum and minimum compliance spaced along the length of the gas flow path through the gas flow system, which system includes a pulse converter device for attenuating noise in the pulses of gas and comprises first and second volumes 53, 55, Fig. 4, forming first and second acoustic compliance sections and an inertance member 61, the volumes being larger in cross-sectional area than the mean cross-sectional area of the gas flow path and the inertance member providing a reduced cross-sectional area compared with said volumes. The compliance sections serve to oppose changes in pulse pressure during gas flow and the inertance member serves to oppose the changes in rate of gas flow. The compliance sections and inertance member may be contained in a common shell, Fig. 6 (not shown), or may have double end-walls for additional strength, Fig. 8 (not shown). In the embodiment shown in Fig. 9, the compliances are provided by first and second chambers 423, 427 and the inertance by third chamber 441 containing gas flow tube 457, the first and second chambers communicating with the third via gas flow passages 435 and 443 respectively. In Fig. 10, the first and second chambers 551, 553 are connected to the third chamber formed by small chambers 555 and 557 by way of gas flow passages 531, 539 and openings 535, 543. The gas flow system may have a conventional silencer 111, Fig. 5, upstream of the pulse converter to attenuate the highest frequencies and another 131 downstream which mainly acts to attenuate low frequencies, the medium and high frequencies having been attenuated already. The compliances formed by the first and second volumes, e.g. 53, 55, Fig. 4, should be located at points which would be of low compliance in a system consisting of a uniform pipe of predetermined length and the inertance e.g. 61 in Fig. 4, should be located at a point which would be of high compliance in such a system.
GB170274A 1973-03-14 1974-01-14 Pulsating gas flow system including a sound attenuating pulse converter Expired GB1462841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00340966A US3807527A (en) 1973-03-14 1973-03-14 Pulse converter for exhaust system

Publications (1)

Publication Number Publication Date
GB1462841A true GB1462841A (en) 1977-01-26

Family

ID=23335691

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4002376A Expired GB1462842A (en) 1973-03-14 1974-01-14 Pulse converter for use in a pulsating gas flow system
GB170274A Expired GB1462841A (en) 1973-03-14 1974-01-14 Pulsating gas flow system including a sound attenuating pulse converter

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB4002376A Expired GB1462842A (en) 1973-03-14 1974-01-14 Pulse converter for use in a pulsating gas flow system

Country Status (7)

Country Link
US (1) US3807527A (en)
JP (1) JPS49120018A (en)
CA (1) CA1023223A (en)
DE (2) DE7401772U (en)
FR (1) FR2221618B1 (en)
GB (2) GB1462842A (en)
IT (1) IT1006887B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164095A (en) * 1984-09-05 1986-03-12 Hydrovane Compressor Rotary air compressors

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989121A (en) * 1975-05-14 1976-11-02 Tenneco Inc. Pulse converting exhaust silencing system
US5245140A (en) * 1992-04-20 1993-09-14 Wu Kan Chiao Muffler
BR9713244B1 (en) * 1996-09-30 2009-05-05 device for silencing a gas flow, flow system, vehicle, stationary installation, method for sizing and silencing a gas flow.
US6520286B1 (en) 1996-09-30 2003-02-18 Silentor Holding A/S Silencer and a method of operating a vehicle
US5703670A (en) * 1996-11-19 1997-12-30 Callard; Shawn R. Earplugs adapted to eyeglasses and combination thereof
SE506618C2 (en) * 1996-12-19 1998-01-19 Flaekt Ab Device and method of noise reduction in a gaseous medium transport system and use of the device in a ship exhaust system
NL1006333C2 (en) * 1997-06-16 1998-12-21 Arvin Exhaust Bv Seamed exhaust system.
JPH11245895A (en) * 1998-02-27 1999-09-14 Yamaha Motor Co Ltd Exhauster of small planing vessel
CA2373774A1 (en) * 1998-03-30 1999-10-07 Silentor Holding A/S A silencer and a method of operating a vehicle
JP4005717B2 (en) * 1998-10-19 2007-11-14 ヤマハ発動機株式会社 Small planing boat
DE59810760D1 (en) * 1998-12-15 2004-03-18 Krasnojarskij Politekhn I Kras Combustion chamber with acoustically damped fuel supply system
JP4508224B2 (en) * 2007-09-06 2010-07-21 トヨタ自動車株式会社 Exhaust silencer for internal combustion engine
US7628250B2 (en) * 2007-11-21 2009-12-08 Emcon Technologies Llc Passive valve assembly for vehicle exhaust system
US8591208B2 (en) * 2009-06-24 2013-11-26 Southwest Research Institute Multi-frequency pulsation absorber at cylinder valve cap
KR20130073710A (en) * 2011-12-23 2013-07-03 삼성전자주식회사 Silencer for reducing acoustic noise of fuel cell system
US20220026059A1 (en) * 2018-12-06 2022-01-27 IIgiz Yamilev Pulsating combustion device with improved energy conversion efficiency and reduced noise level
JP2021116732A (en) * 2020-01-24 2021-08-10 フタバ産業株式会社 Muffler
CN112855306B (en) * 2021-01-11 2022-04-01 江苏中孚动力产业链有限公司 Exhaust silencing mechanism of diesel internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164095A (en) * 1984-09-05 1986-03-12 Hydrovane Compressor Rotary air compressors

Also Published As

Publication number Publication date
AU6417474A (en) 1975-07-03
FR2221618B1 (en) 1976-06-25
IT1006887B (en) 1976-10-20
FR2221618A1 (en) 1974-10-11
CA1023223A (en) 1977-12-27
DE2402499A1 (en) 1974-09-19
US3807527A (en) 1974-04-30
JPS49120018A (en) 1974-11-16
GB1462842A (en) 1977-01-26
DE7401772U (en) 1977-03-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee