GB1419781A - Exhaust silencers - Google Patents

Exhaust silencers

Info

Publication number
GB1419781A
GB1419781A GB4980472A GB4980472A GB1419781A GB 1419781 A GB1419781 A GB 1419781A GB 4980472 A GB4980472 A GB 4980472A GB 4980472 A GB4980472 A GB 4980472A GB 1419781 A GB1419781 A GB 1419781A
Authority
GB
United Kingdom
Prior art keywords
inner tube
slot
oct
chambers
passage
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
GB4980472A
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.)
Norton Villiers Ltd
Original Assignee
Norton Villiers Ltd
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 Norton Villiers Ltd filed Critical Norton Villiers Ltd
Priority to GB4980472A priority Critical patent/GB1419781A/en
Priority to JP11803473A priority patent/JPS4995049A/ja
Priority to IT3057273A priority patent/IT998965B/en
Priority to DE19732353722 priority patent/DE2353722A1/en
Publication of GB1419781A publication Critical patent/GB1419781A/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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • 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
    • 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

1419781 Exhaust silencers NORTON VILLIERS Ltd 17 Oct 1973 [28 Oct 1972 18 April 1973] 49804/72 and 18675/73 Heading F1B An exhaust silencer comprises inner, intermediate and outer tubes 10, 18, 19, a passage 23 between the intermediate and outer tubes ending in a slot 28 and having a length at least fifty times the slot height and one or more chambers 42, 43, 44 between the exit openings of the inner tube 10 and the inlet to the passage 23, the walls of which are imperforate. The cross-sectioned area perpendicular to the gas flow direction is everywhere at least as great as the cross sectional area of the inlet to inner tube 10. The exit opening of the inner tube leads into a diffuser 12 having slots 17. The outlet slot may be continuous and in the form of a circle, oval, rectangle or of sinuous shape or it may be of finite length and straight or arcuate. The chambers 42, 43, 44 act as resonators and are tuned to different frequencies and inter-connected by tuned pipes 37 and 40. Further attenuation is provided by a dead air space 45.
GB4980472A 1972-10-28 1972-10-28 Exhaust silencers Expired GB1419781A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4980472A GB1419781A (en) 1972-10-28 1972-10-28 Exhaust silencers
JP11803473A JPS4995049A (en) 1972-10-28 1973-10-22
IT3057273A IT998965B (en) 1972-10-28 1973-10-25 EXHAUST SILENCER
DE19732353722 DE2353722A1 (en) 1972-10-28 1973-10-26 EXHAUST MUFFLER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4980472A GB1419781A (en) 1972-10-28 1972-10-28 Exhaust silencers
GB1867573 1973-04-18

Publications (1)

Publication Number Publication Date
GB1419781A true GB1419781A (en) 1975-12-31

Family

ID=26253531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4980472A Expired GB1419781A (en) 1972-10-28 1972-10-28 Exhaust silencers

Country Status (4)

Country Link
JP (1) JPS4995049A (en)
DE (1) DE2353722A1 (en)
GB (1) GB1419781A (en)
IT (1) IT998965B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286675A (en) * 1979-06-25 1981-09-01 Beaird-Poulan Division Of Emerson Electric Co. Narrow profile power handle for line trimmer and the like
US4370855A (en) * 1979-06-25 1983-02-01 Emerson Electric Co. Muffler for portable engine
TW201233887A (en) * 2010-10-08 2012-08-16 Pinnacle Engines Inc Integrated muffler and emissions control for engine exhaust

Also Published As

Publication number Publication date
DE2353722A1 (en) 1974-05-02
JPS4995049A (en) 1974-09-10
IT998965B (en) 1976-02-20

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee