US20050155817A1 - Muffler for internal combustion motor vehicles - Google Patents

Muffler for internal combustion motor vehicles Download PDF

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Publication number
US20050155817A1
US20050155817A1 US11/036,634 US3663405A US2005155817A1 US 20050155817 A1 US20050155817 A1 US 20050155817A1 US 3663405 A US3663405 A US 3663405A US 2005155817 A1 US2005155817 A1 US 2005155817A1
Authority
US
United States
Prior art keywords
muffler
accordance
ridges
housing
internal combustion
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.)
Abandoned
Application number
US11/036,634
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English (en)
Inventor
Jan Brand
Klaus Schroer
Patrick Garcia
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.)
Tenneco GmbH
Original Assignee
Heinrich Gillet GmbH
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 Heinrich Gillet GmbH filed Critical Heinrich Gillet GmbH
Assigned to HEINRICH GILLET GMBH reassignment HEINRICH GILLET GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRAND, JAN, SCHROER, KLAUS, GARCIA, PATRICK
Publication of US20050155817A1 publication Critical patent/US20050155817A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • 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
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Definitions

  • the invention concerns mufflers for motor vehicles with internal combustion engines, which comprise at least a muffler housing, an intake pipe, an exhaust pipe, and possibly internal walls and/or pipes.
  • the muffler housing is provided with irregularly arranged ridges computed by an FEM computer program.
  • the acoustic requirements must be coordinated with the spatial situation in the engine compartment or under the chassis.
  • the spatial situation in particular results in muffler housings with an oval to cubically flat cross section.
  • the sheet metal parts of the muffler housing are provided with impressions. Compare, for example, DE 197 46 553 A, EP 0 324 891 A, BE 653 635 A, JP 49129034 A, JP 07259531 A, or U.S. Pat. No.
  • the computer program “Optistruct” computes the impressions in the housing surface that result in the highest possible resonance frequency.
  • the impressions in the housing surface that have been computed in this way can be designated as irregularly bounded, irregularly positioned, and irregularly elevated ridges.
  • this ridge pattern is also known as “cow-spot design.”
  • the term “Kassel ridge” is also used.
  • the object of the present invention is to provide a muffler of the aforementioned type, whose sound radiation from the surface of the muffler housing is minimized, but which can be produced with much simpler and less expensive tools.
  • a muffler having a muffler housing, an intake pipe attached to the housing, an exhaust pipe attached to the housing, and selectively internal walls and/or pipes.
  • the muffler housing has irregularly arranged ridges computed by an FEM computer program. The ridges are regularly bounded, simple geometric figures.
  • the muffler housing has a lowest resonance frequency at least equal to a dominant excitation frequency of the internal combustion engine over the engine's entire RPM range.
  • the present invention is based on the predetermined task of minimizing the sound radiation from the surface of the housing by means of a computer optimization program, such that, however, the ridge pattern is limited to simple geometric shapes that can be produced essentially by the standardized metal machining methods of turning and milling.
  • These simple geometric shapes are preferably circles and circular rings, segments of circles and circular rings, and polygons, especially rectangles. These shapes are dimensioned and positioned by the computer optimization program in such a way that the lowest resonance frequency over the entire rpm range of the internal combustion engine is above its dominant excitation frequency by the greatest possible amount, so that the sound radiation of the surface of the housing is minimized.
  • the ridges can also penetrate each other.
  • the ridges can also be formed as letters or characters of any desired character set, e.g., Latin, Arabic, Japanese, etc., characters, Egyptian hieroglyphs, etc. Numerals and special symbols have also been found to be suitable. However, these characters cannot be confused with serial numbers, manufacturer's marks, etc., that are customarily applied, since these are not irregularly arranged.
  • the muffler housing is produced from only one layer of sheet metal.
  • Conventional mufflers use double layers of sheet metal to reduce the radiation of solid-borne sound by means of the friction between the pieces of sheet metal.
  • the wall thickness of the sheet metal can be significantly reduced, namely, down to 0.7 mm, without an unacceptable rise in the radiation of solid-borne sound.
  • the muffler housing consists of two shells or is wound from one piece of sheet metal.
  • FIG. 1 shows a first muffler that has been optimized for minimal sound radiation
  • FIG. 2 shows measured values of a before-after comparison for an optimized muffler
  • FIG. 3 shows a second muffler that has been optimized for minimal sound radiation
  • FIG. 4 shows a third muffler that has been optimized for minimal sound radiation.
  • FIG. 1 shows a first exhaust muffler for an internal combustion motor vehicle.
  • the housing 1 has an externally flat, cubic cross section.
  • the exhaust gases enter the housing 1 through an intake pipe 2 and leave it through an exhaust pipe 3 .
  • Partitions and internal pipes of types which in themselves are already well known are provided inside the housing 1 . Their position and stiffness affect the resonance frequencies of the housing 1 .
  • An optimized ridge pattern is impressed in the surface of the muffler housing to reduce the high level of sound radiation from the surface of the housing caused by the large and only slightly curved sheet metal surfaces.
  • This ridge pattern consists of regularly bounded, simple geometric figures.
  • the drawing shows circular rings 4 , segments of circular rings 5 , rectangles 6 and trapezoids 7 .
  • the two rectangular ridges 6 partially penetrate each other to form a T-shaped structure.
  • FIG. 2 shows the result of the acoustic optimization measures in a before-after comparison.
  • the optimized curve (broken line) is as much as 10 dB below the initial curve (solid line).
  • FIG. 3 shows another muffler that has been optimized for minimal sound radiation by virtue of a shift of the resonance frequencies to higher values.
  • Exclusively circles 8 of equal size are present as ridges. This makes it possible for the deep-drawing and stamping tools to be especially simple.
  • the parallel rectangular ridges 9 serve the purpose of holding partitions in the interior of the housing 1 .
  • FIG. 4 shows a third example of a muffler that has been optimized for minimal sound radiation.
  • the ridge pattern consists of “letters” and “numerals” of a character set, which have been irregularly positioned by an FEM program in such a way that the lowest resonance frequency is above the dominant excitation frequency of the internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
US11/036,634 2004-01-17 2005-01-14 Muffler for internal combustion motor vehicles Abandoned US20050155817A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004000659U DE202004000659U1 (de) 2004-01-17 2004-01-17 Schalldämpfer für Kraftfahrzeuge mit Verbrennungsmotor
DE202004000659.6 2004-01-17

Publications (1)

Publication Number Publication Date
US20050155817A1 true US20050155817A1 (en) 2005-07-21

Family

ID=32115810

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/036,634 Abandoned US20050155817A1 (en) 2004-01-17 2005-01-14 Muffler for internal combustion motor vehicles

Country Status (5)

Country Link
US (1) US20050155817A1 (zh)
JP (1) JP2005201269A (zh)
KR (1) KR100697796B1 (zh)
CN (1) CN100398788C (zh)
DE (2) DE202004000659U1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100012421A1 (en) * 2006-05-24 2010-01-21 Emcon Technologies Germany (Augsburg) Gmbh Housing For A Component of An Exhaust System, and Such a Component
US20100170744A1 (en) * 2007-06-08 2010-07-08 Faurecia Systemes D'echappement Motor vehicle exhaust line silencer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101499212B1 (ko) * 2009-11-16 2015-03-05 현대자동차주식회사 자동차 소음기의 엔드 플레이트 구조
DE102010020826B4 (de) * 2010-05-18 2013-06-06 Tenneco Gmbh Abgasschalldämpfer für Brennkraftmaschinen und Tiefziehwerkzeug hierfür sowie Verfahren zur Herstellung eines solchen Schalldämpfers
CN113700538A (zh) * 2021-07-28 2021-11-26 东风汽车集团股份有限公司 一种装饰尾管及汽车排气尾管

Citations (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315305A (en) * 1941-05-07 1943-03-30 Harold E Van Voorhees Muffler
US2484827A (en) * 1946-10-17 1949-10-18 Bertron G Harley Baffle type muffler with corrugated casing
US2661073A (en) * 1950-08-09 1953-12-01 Oldberg Mfg Company Silencer or muffler
US2835336A (en) * 1953-07-15 1958-05-20 Oldberg Mfg Company Silencer or muffler
US3009530A (en) * 1960-01-21 1961-11-21 Laco Oil Burner Co Inc Exhaust device
US3103256A (en) * 1959-11-09 1963-09-10 Oldberg Mfg Company Silencer or muffler
US3106984A (en) * 1962-01-09 1963-10-15 Laclede Metal Products Co Muffler construction
US3220508A (en) * 1961-10-11 1965-11-30 Gen Motors Corp Muffler with interlocked casing and baffle members
US3227659A (en) * 1962-06-28 1966-01-04 Texaco Inc Treatment of exhaust gases using an alumina base alkali metal phosphorus-containing compound
US3638756A (en) * 1969-12-30 1972-02-01 United States Steel Corp Vehicle muffler and method of assembly
US4084658A (en) * 1976-11-05 1978-04-18 Custom-Bilt Tunable expansion chamber for internal combustion engines
US4239733A (en) * 1979-04-16 1980-12-16 General Motors Corporation Catalytic converter having a monolith with support and seal means therefor
US4269807A (en) * 1979-10-22 1981-05-26 Uop Inc. Catalytic converter mounting arrangement for reducing bypass leakage
US4395982A (en) * 1980-06-30 1983-08-02 M.A.N. Maschinenfabrik Augsburg-Nurnberg Ag Casing member for elements of internal combustion engines
US4433542A (en) * 1982-07-22 1984-02-28 Nissan Motor Company, Limited Heat-shielding structure
US4536371A (en) * 1983-05-16 1985-08-20 Arvin Industries, Inc. Catalytic converter divider
US4559205A (en) * 1983-02-28 1985-12-17 General Motors Corporation Catalytic converter substrate and retainer assembly
US4655496A (en) * 1984-11-07 1987-04-07 Dr. Alois Stankiewica GmbH Motor vehicle noise insulation
US4751979A (en) * 1985-05-16 1988-06-21 Airborne Express, Inc. Engine noise suppression kit for the nacelles of a jet aircraft
US4894987A (en) * 1988-08-19 1990-01-23 Ap Parts Manufacturing Company Stamp formed muffler and catalytic converter assembly
US5036585A (en) * 1988-08-05 1991-08-06 Grunzweig & Hartmann Ag Process for the manufacture of an exhaust silencer
US5055274A (en) * 1989-02-06 1991-10-08 Tennessee Gas Pipeline Company Catalytic converter and substrate support with one piece housing
US5119551A (en) * 1989-02-06 1992-06-09 Tennessee Gas Pipeline Company Method of making a catalytic converter with one piece housing
US5121810A (en) * 1989-12-19 1992-06-16 Kioritz Corporation Muffler cover
US5147987A (en) * 1989-04-28 1992-09-15 Arvin Industries, Inc. Muffler assembly
US5164551A (en) * 1990-12-03 1992-11-17 Ap Parts Manufacturing Co. Stamp formed muffler with compound reinforcement pattern for preventing shell ring
US5173577A (en) * 1990-09-04 1992-12-22 Ap Parts Manufacturing Co. Stamp formed muffler with low back pressure
US5187334A (en) * 1990-07-02 1993-02-16 Tennessee Gas Pipeline Company Acoustic muffler with one-piece housing
US5211013A (en) * 1991-09-17 1993-05-18 Tecumseh Products Company Muffler heat shield and method of attachment
US5229557A (en) * 1991-05-28 1993-07-20 Arvin Industries, Inc. Rigidified muffler assembly
US5241512A (en) * 1991-04-25 1993-08-31 Hutchinson 2 Acoustic protection material and apparatus including such material
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
US5280142A (en) * 1991-10-18 1994-01-18 Ap Parts Manufacturing Company Heat shielded exhaust system component
US5281778A (en) * 1993-06-28 1994-01-25 Midas International Corporation Vehicular muffler with heat shield
US5440083A (en) * 1992-02-10 1995-08-08 Kioritz Corporation Exhaust muffler for internal combustion engine
US5598669A (en) * 1992-07-16 1997-02-04 Saint Gobain Vitrage International "Les Miroirs" Acoustic insulating box
US5859394A (en) * 1997-06-12 1999-01-12 Ap Parts Manufacturing Company Muffler with stamped internal plates defining tubes and separating chambers
US5945642A (en) * 1998-03-13 1999-08-31 Minnesota Mining And Manufacturing Company Acoustic horn
US5949035A (en) * 1997-03-24 1999-09-07 Arvin Industries, Inc. Stamp-formed muffler having a unitary inner cartridge
US6058702A (en) * 1996-05-13 2000-05-09 Scambia Industrial Developments Aktiengesellschaft Exhaust system for a motor vehicle, and motor vehicle
US6257367B1 (en) * 1998-03-05 2001-07-10 Arvinmeritor, Inc. Stamp-formed muffler
US20010037912A1 (en) * 2000-04-26 2001-11-08 Firma Andreas Stihl Ag & Co. Exhaust gas muffler having a spark arrestor screen
US20020144860A1 (en) * 2000-10-17 2002-10-10 Bbnt Solutions Llc System and method for phased noise attenuation
US20030101030A1 (en) * 2001-11-29 2003-05-29 Faurecia Exhaust Systems, Inc. Optimal rib design method for exhaust components
US6659222B1 (en) * 1999-03-05 2003-12-09 Arvinmeritor, Inc. Multi-chambered muffler
US6708626B2 (en) * 2001-06-11 2004-03-23 Kobe Steel, Ltd. Double-walled damping structure
US6892855B2 (en) * 2003-02-25 2005-05-17 Tenneco Automotive Operating Company Inc. Embossed shell for spun mufflers
US6892852B2 (en) * 2001-02-13 2005-05-17 J. Eberspächer GmbH & Co. KG Exhaust housing part of a motor vehicle, particularly for an exhaust muffler or an exhaust gas catalyst

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700806A (en) * 1986-11-25 1987-10-20 Ap Industries, Inc. Stamp formed muffler
US4821840A (en) * 1988-01-20 1989-04-18 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
JPH07259531A (ja) * 1994-03-28 1995-10-09 Calsonic Corp 消音器
KR19990003207A (ko) * 1997-06-25 1999-01-15 구자홍 저저항용 반사방지 음극선관 제조방법
US6135237A (en) * 1998-04-03 2000-10-24 Arvin Industries, Inc. Stamp-formed muffler

Patent Citations (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315305A (en) * 1941-05-07 1943-03-30 Harold E Van Voorhees Muffler
US2484827A (en) * 1946-10-17 1949-10-18 Bertron G Harley Baffle type muffler with corrugated casing
US2661073A (en) * 1950-08-09 1953-12-01 Oldberg Mfg Company Silencer or muffler
US2835336A (en) * 1953-07-15 1958-05-20 Oldberg Mfg Company Silencer or muffler
US3103256A (en) * 1959-11-09 1963-09-10 Oldberg Mfg Company Silencer or muffler
US3009530A (en) * 1960-01-21 1961-11-21 Laco Oil Burner Co Inc Exhaust device
US3220508A (en) * 1961-10-11 1965-11-30 Gen Motors Corp Muffler with interlocked casing and baffle members
US3106984A (en) * 1962-01-09 1963-10-15 Laclede Metal Products Co Muffler construction
US3227659A (en) * 1962-06-28 1966-01-04 Texaco Inc Treatment of exhaust gases using an alumina base alkali metal phosphorus-containing compound
US3638756A (en) * 1969-12-30 1972-02-01 United States Steel Corp Vehicle muffler and method of assembly
US4084658A (en) * 1976-11-05 1978-04-18 Custom-Bilt Tunable expansion chamber for internal combustion engines
US4239733A (en) * 1979-04-16 1980-12-16 General Motors Corporation Catalytic converter having a monolith with support and seal means therefor
US4269807A (en) * 1979-10-22 1981-05-26 Uop Inc. Catalytic converter mounting arrangement for reducing bypass leakage
US4395982A (en) * 1980-06-30 1983-08-02 M.A.N. Maschinenfabrik Augsburg-Nurnberg Ag Casing member for elements of internal combustion engines
US4433542A (en) * 1982-07-22 1984-02-28 Nissan Motor Company, Limited Heat-shielding structure
US4559205A (en) * 1983-02-28 1985-12-17 General Motors Corporation Catalytic converter substrate and retainer assembly
US4536371A (en) * 1983-05-16 1985-08-20 Arvin Industries, Inc. Catalytic converter divider
US4655496A (en) * 1984-11-07 1987-04-07 Dr. Alois Stankiewica GmbH Motor vehicle noise insulation
US4751979A (en) * 1985-05-16 1988-06-21 Airborne Express, Inc. Engine noise suppression kit for the nacelles of a jet aircraft
US5036585A (en) * 1988-08-05 1991-08-06 Grunzweig & Hartmann Ag Process for the manufacture of an exhaust silencer
US4894987A (en) * 1988-08-19 1990-01-23 Ap Parts Manufacturing Company Stamp formed muffler and catalytic converter assembly
US5055274A (en) * 1989-02-06 1991-10-08 Tennessee Gas Pipeline Company Catalytic converter and substrate support with one piece housing
US5119551A (en) * 1989-02-06 1992-06-09 Tennessee Gas Pipeline Company Method of making a catalytic converter with one piece housing
US5147987A (en) * 1989-04-28 1992-09-15 Arvin Industries, Inc. Muffler assembly
US5121810A (en) * 1989-12-19 1992-06-16 Kioritz Corporation Muffler cover
US5187334A (en) * 1990-07-02 1993-02-16 Tennessee Gas Pipeline Company Acoustic muffler with one-piece housing
US5173577A (en) * 1990-09-04 1992-12-22 Ap Parts Manufacturing Co. Stamp formed muffler with low back pressure
US5164551A (en) * 1990-12-03 1992-11-17 Ap Parts Manufacturing Co. Stamp formed muffler with compound reinforcement pattern for preventing shell ring
US5241512A (en) * 1991-04-25 1993-08-31 Hutchinson 2 Acoustic protection material and apparatus including such material
US5229557A (en) * 1991-05-28 1993-07-20 Arvin Industries, Inc. Rigidified muffler assembly
US5211013A (en) * 1991-09-17 1993-05-18 Tecumseh Products Company Muffler heat shield and method of attachment
US5280142A (en) * 1991-10-18 1994-01-18 Ap Parts Manufacturing Company Heat shielded exhaust system component
US5440083A (en) * 1992-02-10 1995-08-08 Kioritz Corporation Exhaust muffler for internal combustion engine
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
US5598669A (en) * 1992-07-16 1997-02-04 Saint Gobain Vitrage International "Les Miroirs" Acoustic insulating box
US5281778A (en) * 1993-06-28 1994-01-25 Midas International Corporation Vehicular muffler with heat shield
US6058702A (en) * 1996-05-13 2000-05-09 Scambia Industrial Developments Aktiengesellschaft Exhaust system for a motor vehicle, and motor vehicle
US5949035A (en) * 1997-03-24 1999-09-07 Arvin Industries, Inc. Stamp-formed muffler having a unitary inner cartridge
US5859394A (en) * 1997-06-12 1999-01-12 Ap Parts Manufacturing Company Muffler with stamped internal plates defining tubes and separating chambers
US6257367B1 (en) * 1998-03-05 2001-07-10 Arvinmeritor, Inc. Stamp-formed muffler
US5945642A (en) * 1998-03-13 1999-08-31 Minnesota Mining And Manufacturing Company Acoustic horn
US6659222B1 (en) * 1999-03-05 2003-12-09 Arvinmeritor, Inc. Multi-chambered muffler
US20010037912A1 (en) * 2000-04-26 2001-11-08 Firma Andreas Stihl Ag & Co. Exhaust gas muffler having a spark arrestor screen
US20020144860A1 (en) * 2000-10-17 2002-10-10 Bbnt Solutions Llc System and method for phased noise attenuation
US6892852B2 (en) * 2001-02-13 2005-05-17 J. Eberspächer GmbH & Co. KG Exhaust housing part of a motor vehicle, particularly for an exhaust muffler or an exhaust gas catalyst
US6708626B2 (en) * 2001-06-11 2004-03-23 Kobe Steel, Ltd. Double-walled damping structure
US20030101030A1 (en) * 2001-11-29 2003-05-29 Faurecia Exhaust Systems, Inc. Optimal rib design method for exhaust components
US6892855B2 (en) * 2003-02-25 2005-05-17 Tenneco Automotive Operating Company Inc. Embossed shell for spun mufflers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100012421A1 (en) * 2006-05-24 2010-01-21 Emcon Technologies Germany (Augsburg) Gmbh Housing For A Component of An Exhaust System, and Such a Component
US20100170744A1 (en) * 2007-06-08 2010-07-08 Faurecia Systemes D'echappement Motor vehicle exhaust line silencer
US7992677B2 (en) * 2007-06-08 2011-08-09 Faurecia Systemes D'echappement Motor vehicle exhaust line silencer

Also Published As

Publication number Publication date
JP2005201269A (ja) 2005-07-28
CN100398788C (zh) 2008-07-02
CN1641190A (zh) 2005-07-20
DE102005000992A1 (de) 2005-08-04
KR100697796B1 (ko) 2007-03-20
KR20050075730A (ko) 2005-07-21
DE202004000659U1 (de) 2004-04-15

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AS Assignment

Owner name: HEINRICH GILLET GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRAND, JAN;SCHROER, KLAUS;GARCIA, PATRICK;REEL/FRAME:016354/0785;SIGNING DATES FROM 20050117 TO 20050120

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION