CA2094168A1 - Mufflers - Google Patents

Mufflers

Info

Publication number
CA2094168A1
CA2094168A1 CA 2094168 CA2094168A CA2094168A1 CA 2094168 A1 CA2094168 A1 CA 2094168A1 CA 2094168 CA2094168 CA 2094168 CA 2094168 A CA2094168 A CA 2094168A CA 2094168 A1 CA2094168 A1 CA 2094168A1
Authority
CA
Canada
Prior art keywords
fold
helicoid
tube
longitudinal axis
oblique
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.)
Granted
Application number
CA 2094168
Other languages
French (fr)
Other versions
CA2094168C (en
Inventor
Carl N. Ramjit
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
Application filed by Individual filed Critical Individual
Priority to CA 2094168 priority Critical patent/CA2094168C/en
Publication of CA2094168A1 publication Critical patent/CA2094168A1/en
Application granted granted Critical
Publication of CA2094168C publication Critical patent/CA2094168C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels

Landscapes

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

Abstract

A sound attentuating device, typically applied to the exhaust of internal combusion engines, and consisting of a helicoidal element fitted snugly within a tube. The helicoid is formed by a sequence of flat triangular sufaces generated by a forward fold transverse to a longitudinal axis followed by a reverse fold oblique to the longitudinal axis and having the procedure repeated. It is analogous to an accordion-like strip which rotates because an oblique fold alternates with a transverse fold. The muffler functions by having the helicoid reflect sound waves generated within the machine to which it is attached while permitting the escape of gases through the tube in a spiral manner.
CA 2094168 1993-04-16 1993-04-16 Mufflers Expired - Fee Related CA2094168C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2094168 CA2094168C (en) 1993-04-16 1993-04-16 Mufflers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2094168 CA2094168C (en) 1993-04-16 1993-04-16 Mufflers

Publications (2)

Publication Number Publication Date
CA2094168A1 true CA2094168A1 (en) 1994-10-17
CA2094168C CA2094168C (en) 2003-05-06

Family

ID=4151473

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2094168 Expired - Fee Related CA2094168C (en) 1993-04-16 1993-04-16 Mufflers

Country Status (1)

Country Link
CA (1) CA2094168C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020157382A1 (en) 2019-01-29 2020-08-06 Teknologian Tutkimuskeskus Vtt Oy A sound attenuator as well as elements and a method of production thereof
CN113763914A (en) * 2021-09-27 2021-12-07 哈尔滨理工大学 Spiral Helmholtz resonator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020157382A1 (en) 2019-01-29 2020-08-06 Teknologian Tutkimuskeskus Vtt Oy A sound attenuator as well as elements and a method of production thereof
CN113763914A (en) * 2021-09-27 2021-12-07 哈尔滨理工大学 Spiral Helmholtz resonator

Also Published As

Publication number Publication date
CA2094168C (en) 2003-05-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed