EP0271465A3 - Silencer - Google Patents

Silencer Download PDF

Info

Publication number
EP0271465A3
EP0271465A3 EP87850384A EP87850384A EP0271465A3 EP 0271465 A3 EP0271465 A3 EP 0271465A3 EP 87850384 A EP87850384 A EP 87850384A EP 87850384 A EP87850384 A EP 87850384A EP 0271465 A3 EP0271465 A3 EP 0271465A3
Authority
EP
European Patent Office
Prior art keywords
silencer
focusing point
wall
focusing
point
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Withdrawn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
EP87850384A
Other languages
German (de)
French (fr)
Other versions
EP0271465A2 (en
Inventor
Tore Reinhardtsen
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 NO865041A external-priority patent/NO865041D0/en
Application filed by Individual filed Critical Individual
Publication of EP0271465A2 publication Critical patent/EP0271465A2/en
Publication of EP0271465A3 publication Critical patent/EP0271465A3/en
Withdrawn legal-status Critical Current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
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials

Landscapes

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

Abstract

Silencer comprising an elliptic wall where an intro­ duction pipe (1) for introduction of the sound producing medium being terminated in one of the focusing points (8) of the silencer. The silencer comprises sound absorbing mater­ ial (4) and a second focusing point (7) does not have such sound absorbing material. The sound waves thereby propagating from the first focusing point (8) against the elliptic wall (3), thereby being reflected from the wall towards the second focusing point (7) and from here being propagated back to the elliptic wall (3) where the sound waves again are reflect­ ed to the first focusing point (8) are propagated further back through the introduction pipe (1). An exhaust pipe (2) for gases being arranged in a distance from the second focus­ ing point (7).
EP87850384A 1986-12-12 1987-12-11 Silencer Withdrawn EP0271465A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO865041 1986-12-12
NO865041A NO865041D0 (en) 1986-12-12 1986-12-12 MUFFLER.
NO873269 1987-08-05
NO873269A NO873269L (en) 1986-12-12 1987-08-05 MUFFLER.

Publications (2)

Publication Number Publication Date
EP0271465A2 EP0271465A2 (en) 1988-06-15
EP0271465A3 true EP0271465A3 (en) 1990-02-14

Family

ID=26647993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87850384A Withdrawn EP0271465A3 (en) 1986-12-12 1987-12-11 Silencer

Country Status (2)

Country Link
EP (1) EP0271465A3 (en)
NO (1) NO873269L (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL53952C (en) * 1900-01-01
FR992706A (en) * 1944-08-09 1951-10-22 Sival Soc Improvements to extinguishing devices for noise propagating in a flowing fluid, in particular silencers for internal combustion engines and firearms
DE891343C (en) * 1950-12-01 1953-09-28 Karl Dr-Ing Habil Goesele Arrangement for the suppression of passage resonances in pipe sections
WO1987000241A1 (en) * 1985-06-27 1987-01-15 Tore Reinhardtsen Silencer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL53952C (en) * 1900-01-01
FR992706A (en) * 1944-08-09 1951-10-22 Sival Soc Improvements to extinguishing devices for noise propagating in a flowing fluid, in particular silencers for internal combustion engines and firearms
DE891343C (en) * 1950-12-01 1953-09-28 Karl Dr-Ing Habil Goesele Arrangement for the suppression of passage resonances in pipe sections
WO1987000241A1 (en) * 1985-06-27 1987-01-15 Tore Reinhardtsen Silencer

Also Published As

Publication number Publication date
NO873269L (en) 1988-06-13
EP0271465A2 (en) 1988-06-15
NO873269D0 (en) 1987-08-05

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