EP0340326A1 - Silencieux pour gaz d'échappement - Google Patents

Silencieux pour gaz d'échappement Download PDF

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Publication number
EP0340326A1
EP0340326A1 EP88107200A EP88107200A EP0340326A1 EP 0340326 A1 EP0340326 A1 EP 0340326A1 EP 88107200 A EP88107200 A EP 88107200A EP 88107200 A EP88107200 A EP 88107200A EP 0340326 A1 EP0340326 A1 EP 0340326A1
Authority
EP
European Patent Office
Prior art keywords
gases
inlet
tube
silencer
exhaust silencer
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.)
Withdrawn
Application number
EP88107200A
Other languages
German (de)
English (en)
Inventor
Jan Stanislaw Kula
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
Priority claimed from AU80849/87A external-priority patent/AU8084987A/en
Application filed by Individual filed Critical Individual
Publication of EP0340326A1 publication Critical patent/EP0340326A1/fr
Withdrawn legal-status Critical Current

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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
    • F01N1/08—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
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or 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
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/08—Exhaust gas passages being formed between the walls of an outer shell and an inner chamber

Definitions

  • This invention relates to an exhaust silencer and has been devised particularly though not solely as a silencer for an internal combustion engine.
  • the passageways in each pair have the same configuration as one another.
  • the passageways are defined by tubes within the silencer.
  • the silencer is formed from concentrically located inner and outer cylinders having an annulus therebetween, the inner cylinder having a closed end adjacent to the inlet, the inlet being directed into the annulus, the tubes communicating with the annulus and extending inwardly from the inner cylinder to meeting places located on the axis of the cylinders.
  • the tubes extend continuously diametrically across the inner cylinder being open to the annulus at each end, and have an opening to exhaust the gases therefrom at the mid-point of the tube.
  • the tubes are spaced from one another along the axis of the cylinders and the opening from each tube impinges on the back of the next tube.
  • the annulus is closed toward the end remote from the inlet, and the corresponding end of the inner cylinder communicates with the outlet from the silencer.
  • each tube forms part of a pair of passageways from the inlet (7) to the annulus (3) between the inner and outer cylinders and from there into each end of the tube (11) until the gases are directed at each other at a meeting place at the mid-length of the tube, which is located on the axis (12) of the cylinder.
  • each passageway in each pair of passageways formed by each tube) is of the same length and configuration as the other passageway in that pair, the pressure waves in exhaust gases arriving at the meeting place at the mid-point of the tube from one end of the tube are exactly out of phase with the pressure waves in the exhaust gases arriving from the other end of the tube, so that the pressure waves cancel each other out and effectively reduce or destroy the sound pressure waves in the exhaust gases.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP88107200A 1986-11-06 1988-05-05 Silencieux pour gaz d'échappement Withdrawn EP0340326A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPH883786 1986-11-06
AU80849/87A AU8084987A (en) 1986-11-06 1987-11-05 Exhaust silencer

Publications (1)

Publication Number Publication Date
EP0340326A1 true EP0340326A1 (fr) 1989-11-08

Family

ID=25639588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107200A Withdrawn EP0340326A1 (fr) 1986-11-06 1988-05-05 Silencieux pour gaz d'échappement

Country Status (1)

Country Link
EP (1) EP0340326A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR348642A (fr) * 1904-12-08 1905-04-18 Automobiles Peugeot Des Appareil dit "silencieux", pour l'échappement des gaz dans les moteurs à explosions
FR8437E (fr) * 1906-03-26 1908-04-03 Jean Andre Emmanuel Bizeul Système de silencieux pour moteurs à explosions
CH123389A (fr) * 1927-01-13 1927-11-16 Carol Rosenthal Pot d'échappement pour moteurs à combustion interne.
CH127360A (fr) * 1927-05-06 1928-08-16 Xavier Bernet Franz Silencieux pour moteurs à combustion interne.
DE520113C (de) * 1931-03-07 Alfred O F Schroeder Schalldaempfer nach dem Gegenstromprinzip, bei welchem die Gase mehrfach geteilt, umgelenkt und dann wiederum aufeinander zugefuehrt werden
US2828830A (en) * 1956-10-08 1958-04-01 John C Clark Non-directional muffler
US3957132A (en) * 1974-12-09 1976-05-18 Donaldson Company, Inc. Snowmobile muffler
US4006793A (en) * 1975-11-14 1977-02-08 Robinson Joseph D Engine muffler apparatus providing acoustic silencer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE520113C (de) * 1931-03-07 Alfred O F Schroeder Schalldaempfer nach dem Gegenstromprinzip, bei welchem die Gase mehrfach geteilt, umgelenkt und dann wiederum aufeinander zugefuehrt werden
FR348642A (fr) * 1904-12-08 1905-04-18 Automobiles Peugeot Des Appareil dit "silencieux", pour l'échappement des gaz dans les moteurs à explosions
FR8437E (fr) * 1906-03-26 1908-04-03 Jean Andre Emmanuel Bizeul Système de silencieux pour moteurs à explosions
CH123389A (fr) * 1927-01-13 1927-11-16 Carol Rosenthal Pot d'échappement pour moteurs à combustion interne.
CH127360A (fr) * 1927-05-06 1928-08-16 Xavier Bernet Franz Silencieux pour moteurs à combustion interne.
US2828830A (en) * 1956-10-08 1958-04-01 John C Clark Non-directional muffler
US3957132A (en) * 1974-12-09 1976-05-18 Donaldson Company, Inc. Snowmobile muffler
US4006793A (en) * 1975-11-14 1977-02-08 Robinson Joseph D Engine muffler apparatus providing acoustic silencer

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19900509