CA2121908A1 - Actively Sound Reduced Muffler Having a Venturi Effect Configuration - Google Patents

Actively Sound Reduced Muffler Having a Venturi Effect Configuration

Info

Publication number
CA2121908A1
CA2121908A1 CA 2121908 CA2121908A CA2121908A1 CA 2121908 A1 CA2121908 A1 CA 2121908A1 CA 2121908 CA2121908 CA 2121908 CA 2121908 A CA2121908 A CA 2121908A CA 2121908 A1 CA2121908 A1 CA 2121908A1
Authority
CA
Canada
Prior art keywords
venturi effect
muffler
effect configuration
sound reduced
actively sound
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 2121908
Other languages
French (fr)
Other versions
CA2121908C (en
Inventor
Andrew J. Langley
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.)
Noise Cancellation Technologies Inc
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 CA002121908A priority Critical patent/CA2121908C/en
Priority to PCT/US1991/007831 priority patent/WO1993009334A1/en
Priority claimed from PCT/US1991/007831 external-priority patent/WO1993009334A1/en
Publication of CA2121908A1 publication Critical patent/CA2121908A1/en
Application granted granted Critical
Publication of CA2121908C publication Critical patent/CA2121908C/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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/0333—Noise absorbers by means of an active system

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

In an actively sound dampened muffler, the improvement of a venturi effect area (22) producing means adjacent an aperture (23) in said muffler near which is mounted a loudspeaker (25) in an enclosure (24), the venturi effect area (22) preventing hot exhaust gases from impinging on the loudspeaker (25).
CA002121908A 1991-10-30 1991-10-30 Actively sound reduced muffler having a venturi effect configuration Expired - Fee Related CA2121908C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002121908A CA2121908C (en) 1991-10-30 1991-10-30 Actively sound reduced muffler having a venturi effect configuration
PCT/US1991/007831 WO1993009334A1 (en) 1991-10-30 1991-10-30 Actively sound reduced muffler having a venturi effect configuration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002121908A CA2121908C (en) 1991-10-30 1991-10-30 Actively sound reduced muffler having a venturi effect configuration
PCT/US1991/007831 WO1993009334A1 (en) 1991-10-30 1991-10-30 Actively sound reduced muffler having a venturi effect configuration

Publications (2)

Publication Number Publication Date
CA2121908A1 true CA2121908A1 (en) 1993-05-13
CA2121908C CA2121908C (en) 1997-09-16

Family

ID=4153434

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002121908A Expired - Fee Related CA2121908C (en) 1991-10-30 1991-10-30 Actively sound reduced muffler having a venturi effect configuration

Country Status (1)

Country Link
CA (1) CA2121908C (en)

Also Published As

Publication number Publication date
CA2121908C (en) 1997-09-16

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed