GB2120318A - Exhaust gas discharge system - Google Patents

Exhaust gas discharge system Download PDF

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Publication number
GB2120318A
GB2120318A GB8312894A GB8312894A GB2120318A GB 2120318 A GB2120318 A GB 2120318A GB 8312894 A GB8312894 A GB 8312894A GB 8312894 A GB8312894 A GB 8312894A GB 2120318 A GB2120318 A GB 2120318A
Authority
GB
United Kingdom
Prior art keywords
exhaust system
pressings
silencer
flanges
marginal flanges
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
GB8312894A
Other versions
GB8312894D0 (en
GB2120318B (en
Inventor
Lawrence Allday
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.)
TI CHESWICK SILENCERS Ltd
Original Assignee
TI CHESWICK SILENCERS Ltd
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 TI CHESWICK SILENCERS Ltd filed Critical TI CHESWICK SILENCERS Ltd
Priority to GB8312894A priority Critical patent/GB2120318B/en
Publication of GB8312894D0 publication Critical patent/GB8312894D0/en
Publication of GB2120318A publication Critical patent/GB2120318A/en
Application granted granted Critical
Publication of GB2120318B publication Critical patent/GB2120318B/en
Expired 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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • 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
    • 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
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2470/06—Tubes being formed by assembly of stamped or otherwise deformed sheet-metal

Landscapes

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

Abstract

One or more silencers 12, 13, 14 or catalytic converters are interconnected by tubes 15, which tubes provide a connection to an exhaust manifold and an outlet pipe. The system is formed from a pair of pressings 10 and 11, each pressing having a pair of marginal flanges 16 which abut corresponding flanges on the other pressing, the abutting flanges being secured together in gas- tight manner by welding (Fig. 3A) or by bending (Fig. 3B). <IMAGE>

Description

SPECIFICATION Exhaust systems This invention relates to exhaust systems.
According to one aspect of the present invention an exhaust system comprises; a silencer having an outer casing, a pipe for connecting said silencer to an exhaust manifold or downtake and an outlet pipe from said silencer, in which; the casing of said silencer, the pipe for connecting the silencer to an exhaust manifold or downtake and the outlet pipe are of integral construction being formed from a pair of pressings, each of said pressings having a pair of marginal flanges which abut corresponding flanges on the other pressing, said abutting flanges being secured together in gas-tight manner.
The exhaust system, in addition to the silencer, may incorporate other sub-assemblies, for example, other silencers or catalytic convertors, the housings for these other sub-assemblies being formed integrally of the casing of the silencer, from the pair of pressings.
The internals for the silencers or other subassemblies, where these are included, may be pre-assembled as a cartridge, which has only to be dropped into the formations of the pressings which define the casing of the silencer etc, before the two pressings are assembled and the flanges secured together. These pre-assembled internals may be individually encased, so as to create a double skinned case when enclosed in the two pressings. The internals may be of conventional construction, for example formed from closed perforated tube, or may again be formed from a pair of sheet metal pressings.In the latter case, the sheet metal pressings may be secured together prior to assembly, or may be clamped together by the outer casing, when the two pressings forming the outer casing are secured together, for example by trapping the marginal flanges of the pressings forming the internals between the marginal flanges of the pressings forming the outer casing.
The flanges of the two pressings forming the casing of the silencer and the pipes, may be secured together by any convenient means which will provide a gas-tight seam. For example, the flanges may be welded together continuously, or may be secured together by a mechanical lock, along the whole of their lengths.
Using this form of construction, exhaust systems may be formed purely from sheet material with consequent savings in material handling and stocking; that is, there is no need to stock the various sizes of tubing required for exhaust systems of conventional construction.
Also, fewer operations are required to produce the finished product, for example the seams of the exhaust systems formed in accordance with the present invention may be produced either by welding or forming a mechanical lock, in a single run, which may be carried out by machine.
The present method also provides greater flexibility, in that the shape of the silencer or subassembly casing and interconnecting pipes etc.
may be optimised to suit specific packaging constraints. For example, the silencer or subassembly casing may be asymmetrical rather than symmetrical, as is normal with conventional exhaust components. Also the pipes may be of any desired cross-section, or may even vary in cross-section along their length, rather than be of circular cross-section as used in exhaust systems of conventional construction.
Various embodiments of the present invention are now described, by way of example only, with reference to the accompanying drawings; in which: Figure 1 shows a typical exhaust system, formed in accordance with the present invention, with exploded views of the internals of the various sub-assemblies; Figure 2 shows an alternative construction for the internals of one of the sub-assemblies of the exhaust system shown in Figure 1; and Figures 3A and 3B show alternative methods of forming a gas-tight joint between the pressings forming the exhaust system, shown in Figure 1.
The exhaust system illustrated in Figure 1 comprises three silencers elements 12, 13 and 14, interconnected by pipes 15, the elements 12, 13 and 14 and pipes 1 5 being formed as an integral unit from a pair of sheet metal pressings 10and 11.
The two pressings 10 and 11 which form the outer casings of the various silencer elements and interconnecting pipes of the exhaust system, are formed with marginal flanges 16, so that the flanges of one pressing 10, abut the flanges of the other pressing 11, when the two are brought together. The two pressings 10 and 11 may then be joined together, in gas-tight manner, by means of a welded seam along the length of each pair of abutting flanges 16, as illustrated in Figure 3A; or by forming a mechanical lock between each pair of abutting flanges 16, as illustrated in Figure 3B.
In the latter case, a sealant may be included between the flanges 16, in order to ensure a gastight joint.
In the exhaust system illustrated, silencer element 1 2 forms a front resonator. This front resonator comprises a substantially cylindrical casing 20 formed by the two pressings 10 and 1 with a perforated metal tube 21, providing a clear passageway through the casing 20. The perforated tube 21 is formed from two half pressings 22, 23 jointed together by means of marginal flanges 24. The perforated tube 21 is surrounded by a pack of steel wool 25 which in turn is surrounded by a pack of sound absorptive material 26. Both the packs 25 and 26 are formed as two halves, split longitudinally, in order to facilitate assembly.
The silencer element 13, forms the main silencer for the system. Again the two half pressings 10 and 11 define a casing 30, in which is located three perforated tubes 31, which are mounted at each end by means of baffle plates 32 and 33, in order to define a winding passageway for exhaust gasses passing through the silencer.
The portions of the perforated tubes 31, disposed between the baffle plates 32 and 33 are surrounded by sound absorptive material which is applied as a pre-formed pack in two halves 32 and 35.
Silencer element 14, which forms the rear silencer, like the front resonator 12, has a cylindrical casing, in which a perforated pipe 41, formed from two half pressings 42 and 43, runs from one end of the casing 40 to the other, to define a clear passageway therethrough.
Perforated pipe 41 is surrounded by a pack 44 of sound absorptive material, which again is formed in two halves.
The internal structure of the various silencer elements described above, may be preformed and merely dropped into one of the pressings 10 defining the system, before the two pressings 10 and 11 are brought together and the flanges 16 are joined together, in one of the manners described above.
Figure 2 shows an alternative construction for the internal components used in the main silencer 13. In this construction, the winding passageway through the casing 30, is formed by a pair of pressings 50 and 51 formed from perforated metal. When these pressings 50 and 51 are secured together, they define three perforated tubular elements, similar to the tubes 31 shown in Figure 1. Again the pressings 50 and 51 are surrounded by a pack of sound absorptive material 34, 35, as shown in Figure 1.
Various modifications may be made without departing from the present invention. For example, the invention may be used to form exhaust systems including subassemblies other than silencer elements, for example, catalytic converters. Also the internals of the various components may be formed in any convenient manner, for example perforated tubes may be formed from closed tube or pressings, and the sound absorbant material may be in the form of preformed packs as described, or may be in the form of a blanket which is wrapped about the perforated tubes.

Claims (12)

Claims
1. An exhaust system comprising: a silencer having an outer casing, a pipe for connecting said silencer to an exhaust manifold or downtake and an outlet pipe from said silencer, in which, the casing of said silencer, the pipe for connecting the silencer to an exhaust manifold or downtake and the outlet pipe are of integral construction, being formed from a pair of pressings, each of said pressings having a pair of marginal flanges which abut corresponding flanges on the other pressing, said abutting flanges being secured together in gas-tight manner.
2. An exhaust system according to claim 1 incorporating one or more sub-assemblies in addition to said silencer, the casings for these sub-assemblies also being provided by the two pressings.
3. An exhaust system according to claim 1 or 2 in which the marginal flanges are secured together by seam welding.
4. An exhaust system according to claim 1 or 2 in which the marginal flanges are secured together by means of a mechanical lock.
5. An exhaust system according to claim 4 in which a sealant is included between the abutting marginal flanges.
6. An exhaust system according to any one of the preceding claims in which the silencer and/or other sub-assemblies are provided with means located internally of the casing, said means defining a passageway through the casing.
7. An exhaust system according to claim 6 in which the passageway is surrounded by sound absorptive material.
8. An exhaust system according to claims 6 or 7 in which the passageway is provided by one or more perforated tubes.
9. An exhaust system according to claim 6 or 7 in which the passageway is provided by a pair of perforated sheet pressings, each pressing provided with a pair of marginal flanges, the marginal flanges of one pressing abutting the marginal flanges of the other pressing and being secured together.
1 0. An exhaust system according to claim 9 in which the pressings forming the internal passageway are clamped together between the pressings forming the outer casing.
11. An exhaust system according to claim 10 in which the pressings forming the internal passageway are secured together by trapping their marginal flanges between the marginal flanges of the pressings forming the outer casing.
12. An exhaust system according to any one of claims 6 to 11 in which the internal structure of the silencer and/or other sub-assemblies is preassembled, in cartridge form.
1 3. An exhaust system substantially as described herein, with reference to and as shown in, Figures 1 to 3 of the accompanying drawings.
GB8312894A 1982-05-13 1983-05-11 Exhaust gas discharge system Expired GB2120318B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8312894A GB2120318B (en) 1982-05-13 1983-05-11 Exhaust gas discharge system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8213891 1982-05-13
GB8312894A GB2120318B (en) 1982-05-13 1983-05-11 Exhaust gas discharge system

Publications (3)

Publication Number Publication Date
GB8312894D0 GB8312894D0 (en) 1983-06-15
GB2120318A true GB2120318A (en) 1983-11-30
GB2120318B GB2120318B (en) 1985-07-17

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Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128050A2 (en) * 1983-02-11 1984-12-12 Isover Saint-Gobain Moulded part made of mineral fibres provided with a binder for covering, in a sound insulating way, a perforated exhaust pipe, as well as a method of manufacturing it
EP0268728A2 (en) * 1986-11-25 1988-06-01 Ap Parts Manufacturing Company Stamp formed muffler
US4759423A (en) * 1987-06-11 1988-07-26 Ap Industries, Inc. Tube and chamber construction for an exhaust muffler
US4760894A (en) * 1987-06-11 1988-08-02 Ap Industries, Inc. Exhaust muffler with angularly aligned inlets and outlets
EP0278455A2 (en) * 1987-02-10 1988-08-17 Paul Gillet Gmbh Housing for the receipt of a monolithic ceramic body
US4765437A (en) * 1987-10-07 1988-08-23 Ap Industries, Inc. Stamp formed muffler with multiple low frequency resonating chambers
US4821840A (en) * 1988-01-20 1989-04-18 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
US4836330A (en) * 1988-08-03 1989-06-06 Ap Industries, Inc. Plural chamber stamp formed muffler with single intermediate tube
US4860853A (en) * 1988-12-20 1989-08-29 Ap Parts Manufacturing Company Stamp formed muffler with nonplanar array of tubes
US4894987A (en) * 1988-08-19 1990-01-23 Ap Parts Manufacturing Company Stamp formed muffler and catalytic converter assembly
US4901816A (en) * 1989-01-23 1990-02-20 Ap Parts Manufacturing Company Light weight hybrid exhaust muffler
US4901815A (en) * 1988-10-18 1990-02-20 Parts Manufacturing Company Stamp formed mufflers
US4905791A (en) * 1989-01-23 1990-03-06 Ap Parts Manufacturing Company Light weight hybrid exhaust muffler and method of manufacture
US4909348A (en) * 1988-01-20 1990-03-20 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
US4924968A (en) * 1988-08-03 1990-05-15 Ap Parts Manufacturing Company Stamp formed muffler with reinforced outer shell
US4928372A (en) * 1989-04-07 1990-05-29 Ap Parts Manufacturing Company Process for manufacturing stamp formed mufflers
US4941545A (en) * 1989-04-28 1990-07-17 Arvin Industries, Inc. Muffler assembly
US4958701A (en) * 1990-03-26 1990-09-25 Ap Parts Manufacturing Company Stamp formed muffler with pocket-free baffle crease
USRE33370E (en) * 1986-11-25 1990-10-09 Ap Parts Manufacturing Company Stamp formed muffler
US5004069A (en) * 1990-01-26 1991-04-02 Ap Parts Manufacturing Company Stamp formed muffler with transverse baffle tube
US5173577A (en) * 1990-09-04 1992-12-22 Ap Parts Manufacturing Co. Stamp formed muffler with low back pressure
US5229557A (en) * 1991-05-28 1993-07-20 Arvin Industries, Inc. Rigidified muffler assembly
US5252788A (en) * 1992-04-10 1993-10-12 Ap Parts Manufacturing Co. Stamp formed muffler with in-line expansion chamber and arcuately formed effective flow tubes
US5428194A (en) * 1993-10-19 1995-06-27 Ap Parts Manufacturing Company Narrow width stamp formed muffler
US5448831A (en) * 1993-11-08 1995-09-12 Ap Parts Manufacturing Company Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell
EP0695858A1 (en) * 1994-08-03 1996-02-07 Roth-Technik Gmbh Catalytic converter and silencer exhaust system
US5597986A (en) * 1995-02-27 1997-01-28 Ap Parts Manufacturing Company Stamp formed muffler with nested chambers
US5717173A (en) * 1994-03-02 1998-02-10 Ap Parts Manufacturing Company Exhaust mufflers with stamp formed internal components and method of manufacture
US5816361A (en) * 1994-03-02 1998-10-06 Ap Parts Manufacturing Company Exhaust mufflers with stamp formed internal components and method of manufacture
US5907904A (en) * 1996-03-22 1999-06-01 Ap Parts Manufacturing Company Method of manufacturing an exhaust muffler with stamp formed internal components
US6135237A (en) * 1998-04-03 2000-10-24 Arvin Industries, Inc. Stamp-formed muffler
US6199659B1 (en) 1998-03-05 2001-03-13 Arvin Industries, Inc. Stamp-formed muffler
WO2001051781A1 (en) * 2000-01-15 2001-07-19 J. Eberspächer Gmbh & Co. Exhaust gas system of an internal combustion engine
US6341664B1 (en) 2000-01-13 2002-01-29 Goerlich's Inc. Exhaust muffler with stamp formed internal assembly
US6415889B1 (en) 1998-01-30 2002-07-09 Arvinmeritor, Inc. Stamped-formed muffler apparatus and assembly process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB620862A (en) * 1947-01-27 1949-03-31 Cheswick & Wright Ltd Improvements relating to the manufacture of exhaust silencers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB620862A (en) * 1947-01-27 1949-03-31 Cheswick & Wright Ltd Improvements relating to the manufacture of exhaust silencers

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128050A2 (en) * 1983-02-11 1984-12-12 Isover Saint-Gobain Moulded part made of mineral fibres provided with a binder for covering, in a sound insulating way, a perforated exhaust pipe, as well as a method of manufacturing it
EP0128050A3 (en) * 1983-02-11 1986-04-02 Isover Saint-Gobain Moulded part made of mineral fibres provided with a binder for covering, in a sound insulating way, a perforated exhaust pipe, as well as a method of manufacturing it
EP0268728A2 (en) * 1986-11-25 1988-06-01 Ap Parts Manufacturing Company Stamp formed muffler
EP0268728A3 (en) * 1986-11-25 1990-05-09 Ap Industries Stamp formed muffler
USRE33370E (en) * 1986-11-25 1990-10-09 Ap Parts Manufacturing Company Stamp formed muffler
EP0278455A3 (en) * 1987-02-10 1990-01-31 Paul Gillet Gmbh Housing for the receipt of a monolithic ceramic body
EP0278455A2 (en) * 1987-02-10 1988-08-17 Paul Gillet Gmbh Housing for the receipt of a monolithic ceramic body
US4759423A (en) * 1987-06-11 1988-07-26 Ap Industries, Inc. Tube and chamber construction for an exhaust muffler
US4760894A (en) * 1987-06-11 1988-08-02 Ap Industries, Inc. Exhaust muffler with angularly aligned inlets and outlets
US4765437A (en) * 1987-10-07 1988-08-23 Ap Industries, Inc. Stamp formed muffler with multiple low frequency resonating chambers
US4821840A (en) * 1988-01-20 1989-04-18 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
US4909348A (en) * 1988-01-20 1990-03-20 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
US4836330A (en) * 1988-08-03 1989-06-06 Ap Industries, Inc. Plural chamber stamp formed muffler with single intermediate tube
US4924968A (en) * 1988-08-03 1990-05-15 Ap Parts Manufacturing Company Stamp formed muffler with reinforced outer shell
US4894987A (en) * 1988-08-19 1990-01-23 Ap Parts Manufacturing Company Stamp formed muffler and catalytic converter assembly
EP0356607A1 (en) * 1988-08-19 1990-03-07 Ap Parts Manufacturing Company Stamp formed muffler and catalytic converter assembly
US4901815A (en) * 1988-10-18 1990-02-20 Parts Manufacturing Company Stamp formed mufflers
US4860853A (en) * 1988-12-20 1989-08-29 Ap Parts Manufacturing Company Stamp formed muffler with nonplanar array of tubes
US4905791A (en) * 1989-01-23 1990-03-06 Ap Parts Manufacturing Company Light weight hybrid exhaust muffler and method of manufacture
US4901816A (en) * 1989-01-23 1990-02-20 Ap Parts Manufacturing Company Light weight hybrid exhaust muffler
EP0379675A1 (en) * 1989-01-23 1990-08-01 Ap Parts Manufacturing Company Light weight hybrid exhaust muffler and method of manufacture
US4928372A (en) * 1989-04-07 1990-05-29 Ap Parts Manufacturing Company Process for manufacturing stamp formed mufflers
US4941545A (en) * 1989-04-28 1990-07-17 Arvin Industries, Inc. Muffler assembly
US5147987A (en) * 1989-04-28 1992-09-15 Arvin Industries, Inc. Muffler assembly
US5004069A (en) * 1990-01-26 1991-04-02 Ap Parts Manufacturing Company Stamp formed muffler with transverse baffle tube
US4958701A (en) * 1990-03-26 1990-09-25 Ap Parts Manufacturing Company Stamp formed muffler with pocket-free baffle crease
US5173577A (en) * 1990-09-04 1992-12-22 Ap Parts Manufacturing Co. Stamp formed muffler with low back pressure
US5229557A (en) * 1991-05-28 1993-07-20 Arvin Industries, Inc. Rigidified muffler assembly
US5252788A (en) * 1992-04-10 1993-10-12 Ap Parts Manufacturing Co. Stamp formed muffler with in-line expansion chamber and arcuately formed effective flow tubes
US5428194A (en) * 1993-10-19 1995-06-27 Ap Parts Manufacturing Company Narrow width stamp formed muffler
US5448831A (en) * 1993-11-08 1995-09-12 Ap Parts Manufacturing Company Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell
US5717173A (en) * 1994-03-02 1998-02-10 Ap Parts Manufacturing Company Exhaust mufflers with stamp formed internal components and method of manufacture
US5816361A (en) * 1994-03-02 1998-10-06 Ap Parts Manufacturing Company Exhaust mufflers with stamp formed internal components and method of manufacture
EP0695858A1 (en) * 1994-08-03 1996-02-07 Roth-Technik Gmbh Catalytic converter and silencer exhaust system
US5597986A (en) * 1995-02-27 1997-01-28 Ap Parts Manufacturing Company Stamp formed muffler with nested chambers
US5907904A (en) * 1996-03-22 1999-06-01 Ap Parts Manufacturing Company Method of manufacturing an exhaust muffler with stamp formed internal components
US6415889B1 (en) 1998-01-30 2002-07-09 Arvinmeritor, Inc. Stamped-formed muffler apparatus and assembly process
US6199659B1 (en) 1998-03-05 2001-03-13 Arvin Industries, Inc. Stamp-formed muffler
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GB8312894D0 (en) 1983-06-15
GB2120318B (en) 1985-07-17

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