CA2054962A1 - Muffler and method for fabricating the same - Google Patents

Muffler and method for fabricating the same

Info

Publication number
CA2054962A1
CA2054962A1 CA002054962A CA2054962A CA2054962A1 CA 2054962 A1 CA2054962 A1 CA 2054962A1 CA 002054962 A CA002054962 A CA 002054962A CA 2054962 A CA2054962 A CA 2054962A CA 2054962 A1 CA2054962 A1 CA 2054962A1
Authority
CA
Canada
Prior art keywords
wrapper
tube
tubes
deformations
panels
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
CA002054962A
Other languages
French (fr)
Other versions
CA2054962C (en
Inventor
Alan Joseph Preslicka
Robert J. Paterick
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.)
Maremont Corp
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
Publication of CA2054962A1 publication Critical patent/CA2054962A1/en
Priority claimed from CA002132589A external-priority patent/CA2132589C/en
Application granted granted Critical
Publication of CA2054962C publication Critical patent/CA2054962C/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
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • 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 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 gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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 gas passages, pipes or tubes
    • F01N2470/20—Dimensional characteristics of tubes, e.g. length, diameter

Abstract

A vehicular exhaust system muffler including a reversing unit sub-assembly having spaced apart internal panels; and flow tubes that extend between the internal panels and that have their ends mechanically locked within flanged apertures in the internal panels. A sheet metal wrapper is formed around the peripheries of the panels so that the wrapper is in contact with but is metallurgically unbonded to the panels and so that ends of the flow tubes are adjacent to the side edges of the wrapper.
End cap sub-assemblies are assembled onto each end of the reversing unit sub-assembly and wrapper.
Each end cap sub-assembly includes an end panel having an aperture surrounded by a flange that projects from one side surface of the end panel, and an end tube that extends through the end panel flanged aperture. One end of each end tube has an outer diameter selected such that the one end may be loosely, telescopically and overlappingly fitted within the adjacent end of the adjacent flow tube.
The overlapped ends of the end tubes and the flow tubes are mechanically locked together by a circumferential skewed bead formed in the overlapped ends, where the plane of the skewed bead is at an angle less than ninety degrees with respect to the central longitudinal axis of the overlapped ends.
This mechanical locking maintains the relative axial positions of the overlapped ends and resists relative movement between the overlapped ends and between the internal panels and the wrapper due to the application of torsional and axial forces that the tubes experience during the assembly of the muffler. The end tubes are also mechanically locked within the end panel apertures. This mechanical locking includes a continuous, circumferential bead that is formed in the part of the end tube adjacent to side surface of the end panel opposite its flanged aperture and whose plane is at an angle of ninety degrees with respect to the longitudinal axis of the end tube; and a series of spaced apart, circumferential aligned elongated deformations in the overlapped portion of the end tube and the end panel flange, where the plane of these deformations is at an angle of ninety degrees with respect to the longitudinal axis of the end tube and where the major axes of the deformations are aligned with the plane of the deformations.
CA002054962A 1991-05-03 1991-11-05 Muffler and method for fabricating the same Expired - Fee Related CA2054962C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US69560191A 1991-05-03 1991-05-03
US07/695,601 1991-05-03
CA002132589A CA2132589C (en) 1993-10-04 1994-09-21 Muffler and method for fabricating the same
GB9421340A GB2294500B (en) 1993-10-04 1994-10-24 Improved muffler and method for fabricating the same

Publications (2)

Publication Number Publication Date
CA2054962A1 true CA2054962A1 (en) 1992-11-04
CA2054962C CA2054962C (en) 2002-10-22

Family

ID=27169856

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002054962A Expired - Fee Related CA2054962C (en) 1991-05-03 1991-11-05 Muffler and method for fabricating the same

Country Status (2)

Country Link
CA (1) CA2054962C (en)
GB (1) GB2255376B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477015A (en) * 1991-05-03 1995-12-19 Maremont Corporation Vehicular muffler with improved mechanical lock joints

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2109855B (en) * 1981-11-14 1985-05-22 Shelburne Limited Exhaust silencers for internal combustion engines
US4570747A (en) * 1984-09-18 1986-02-18 Maremont Corporation Mechanical lock joint for joining tubular products
US4565260A (en) * 1984-10-02 1986-01-21 Maremont Corporation Mechanical lock joint for vehicular exhaust system muffler and the like

Also Published As

Publication number Publication date
CA2054962C (en) 2002-10-22
GB9209441D0 (en) 1992-06-17
GB2255376A (en) 1992-11-04
GB2255376B (en) 1995-02-08

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed