EP2476871A2 - Agencement d'échappement destiné à l'utilisation avec un moteur à combustion interne - Google Patents

Agencement d'échappement destiné à l'utilisation avec un moteur à combustion interne Download PDF

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Publication number
EP2476871A2
EP2476871A2 EP11196003A EP11196003A EP2476871A2 EP 2476871 A2 EP2476871 A2 EP 2476871A2 EP 11196003 A EP11196003 A EP 11196003A EP 11196003 A EP11196003 A EP 11196003A EP 2476871 A2 EP2476871 A2 EP 2476871A2
Authority
EP
European Patent Office
Prior art keywords
combustion gas
flow path
gas flow
exhaust assembly
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.)
Withdrawn
Application number
EP11196003A
Other languages
German (de)
English (en)
Other versions
EP2476871A3 (fr
Inventor
Frank Johan Hubert Nottelman
Sjoerd Henricus Anna Ottenheim
Mario MÜLLER
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.)
Jekill & Hyde Co Bv
Original Assignee
Jekill & Hyde Co Bv
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 Jekill & Hyde Co Bv filed Critical Jekill & Hyde Co Bv
Publication of EP2476871A2 publication Critical patent/EP2476871A2/fr
Publication of EP2476871A3 publication Critical patent/EP2476871A3/fr
Withdrawn legal-status Critical Current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
    • F01N1/08—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
    • 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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/168—Silencing apparatus characterised by method of silencing by using movable parts for controlling or modifying silencing characteristics only
    • 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
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/166—Silencing apparatus characterised by method of silencing by using movable parts for changing the flow path through the silencer or for adjusting the dimensions of a chamber or a pipe
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/36—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an exhaust flap
    • 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 exhaust 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles

Definitions

  • the invention relates to an exhaust assembly for use with an internal combustion engine according to the preamble of claim 1.
  • Such an exhaust assembly is known from DE 697 02 447 T2 known.
  • the exhaust arrangement is characterized in that the two combustion gas flow paths have a different damping characteristic.
  • the first combustion gas flow path is characterized by a damping device with which the combustion gases emitted by the exhaust system can be silenced.
  • the second combustion gas flow path is characterized by the fact that no damping device or only one attenuated damping device is provided, so that the outflowing along the second combustion gas flow path Combustion gases are not silenced or attenuated.
  • the user thus has the option of optionally changing over the damping characteristic of the exhaust system. If the combustion gases are passed over the first combustion gas flow path, the combustion gases are silenced and the noise is reduced accordingly. On the other hand, when the combustion gases are conducted via the second combustion gas flow path, the combustion gases flow unattenuated at a correspondingly higher power of the internal combustion engine and cause a higher noise level.
  • Object of the present invention is therefore to propose a new exhaust assembly for use with an internal combustion engine, the damping characteristic can be changed by a control device and thereby has an improved noise characteristics.
  • the exhaust arrangement according to the invention is based on the basic idea that the damping devices of the first combustion gas flow path comprise a high-frequency damper, with the high-frequency damper predominantly higher frequencies of the frequency spectrum contained in the combustion gas can be attenuated.
  • the term high-frequency damper is thus to be understood that the high-frequency damper is suitable for damping the relatively higher frequencies of the frequency spectrum contained in the combustion gas. It is therefore not the attenuation of high-frequency oscillations of the electromagnetic wave spectrum.
  • the high-frequency damper has no significant influence on the desired lower frequencies of the frequency spectrum contained in the combustion gas.
  • the high-frequency damper of the exhaust assembly according to the invention is designed constructively, is basically arbitrary.
  • the design of the high-frequency damper in the manner of a closed sound-collecting chamber, which communicates with the first combustion gas flow path via sound passage openings is preferred.
  • the sound passage openings are not part of the first combustion gas flow path and are not substantially traversed by the combustion gas. Rather, only the sound waves pass through the sound passage openings and are selectively damped in the closed sound chamber so that predominantly higher frequencies are removed or reduced.
  • the closed sound chamber has only a very small or no influence.
  • the sound-absorbing chamber can be filled with a damping material, for example with insulating wool.
  • a particularly easy and inexpensive to manufacture embodiment of the exhaust assembly according to the invention is obtained when the exhaust assembly has a gas-tight housing and a perforated inner tube spaced therefrom.
  • the housing is closed on one side around the inner tube and connected via connecting means with a combustion gas supply pipe.
  • a valve device is then provided for completely or partially closing the inner tube.
  • the combustion gas can then escape without interruption through the inner tube into the environment, so that the inner tube forms the second combustion gas flow path when the valve device is open. If the valve device is closed, the combustion gas can no longer flow out through the inner tube, but is deflected at the valve device.
  • the combustion gas then flows first via the inner tube and via perforation openings formed therein into a bypass, which comprises the inner tube in a cylindrical shape and forms part of the first combustion gas flow path. From this bypass, the combustion gas can then then again flow back through perforation openings in the inner tube to emanate from there into the environment or the combustion gas flows directly from the bypass into the environment. Damping devices could optionally be installed in the bypass behind the perforation openings of the inner tube.
  • the sound passage openings of the cylindrically shaped sound collecting chamber can be arranged on the inside of the housing, which in turn is the outside of the bypass for the first combustion gas flow path forms. As a result, the combustion gas then flows out through the bypass and passes through the sound passage openings of the sound collecting chamber surrounding this bypass in a cylindrical manner.
  • the cylindrical sound collecting chamber is formed by a gas-tight, outer housing wall and a perforated, inner Schall be trecswandung.
  • the perforation in the sound passage wall need not be completely formed, but also the partial perforation of the sound passage is already sufficient in many cases.
  • a deflecting element may be provided in the first combustion gas flow path, with which the flow path of the combustion gases along the perforated, inner Schall bestoryswandung the sound chamber is extended. Through this extended flow path along the sound passage wall of the sound-trapping chamber a correspondingly higher proportion of the sound waves is passed through the Schall shedstoryswandungen and attenuated correspondingly higher.
  • additional sound passage openings may also be present between the second combustion gas flow path and the sound-absorbing chamber.
  • the sound collecting chamber can then combine both the first combustion gas flow path and the second combustion gas flow path contained higher frequencies of the frequency spectrum contained in the combustion gas.
  • the additional sound passage openings may be disposed in the common flow path formed by the first and second combustion gas flow paths.
  • this inner tube may preferably also have sound passage openings which are not part of the first combustion gas flow path and are substantially not traversed by the combustion gas.
  • Fig. 1 shows a first embodiment 01 of an exhaust assembly according to the invention, which is connected via a combustion gas supply pipe 02 with an internal combustion engine, not shown.
  • the exhaust assembly 01 consists essentially of an inner tube 03, a gas-tight housing 04 and a valve device 05.
  • the valve device 05 By pivoting the valve device 05, the cross section of the inner tube 03 can be opened and closed operator-controlled. Is the Valve device 05 is opened, so the combustion gas flowing from the combustion gas supply pipe 02 into the exhaust arrangement can flow out into the environment without substantial damping and without interruption by the inner pipe 03.
  • This undamped and uninterrupted flow path through the inner tube 03 forms the second combustion gas flow path in the sense of the present invention.
  • valve device 05 If the valve device 05 is closed, as it is in Fig. 1 is exemplified, the flow path is interrupted by the inner tube 03 and the combustion gas flows through openings 06 in a cylindrical bypass channel 07. At the end of the bypass channel 07, the combustion gases then flow through openings 08 back into the inner tube 03 and from there into the environment , This corresponds to the first combustion gas flow path in the sense of the present invention and is indicated schematically by the flow arrows 09.
  • the bypass channel 07 is bounded on the outside by a perforated, internal sound passage wall 10, which has a plurality of sound passage openings.
  • a perforated, internal sound passage wall 10 of the bypass channel 07 of the first combustion gas flow path is connected to a cylindrical sound collecting chamber 11 which is formed between the gas-tight outer housing 04 and the perforated inner Schall bestoryswandung 10.
  • the resulting in the bypass channel 07 of the first combustion gas flow path higher frequencies are strongly attenuated when passing through the sound passage openings in the Schall shedswandung 10.
  • damping wool 12 is introduced to reinforce the damping effect, the in Fig. 1 is indicated by dashed lines.
  • the perforation of the sound passage wall 10 continues at the transition to the inner tube 03, so that the inner tube 03 has the only schematically indicated sound passage openings 13.
  • the higher frequencies of the combustion gas contained Frequency spectrum are attenuated even when the valve device 05 is open.
  • Fig. 2 shows a second embodiment 14 of an exhaust assembly according to the invention, which in turn comprises a combustion gas supply pipe 02 for supplying the combustion gases from an internal combustion engine.
  • the exhaust assembly 14 consists essentially of an inner tube 15, a housing wall 16 and a valve means 17.
  • the valve means 17 When the valve means 17 is open, the combustion gas can flow continuously from the combustion gas supply pipe 02 through the inner tube 15 into the environment. Due to the lack of damping, this increases performance and increases noise.
  • the valve device 17 is closed, the combustion gases flow through openings 18 into a bypass channel 19, the combustion gases being deflected in the opposite direction on a deflecting element 20. At the end of the bypass channel 19, the combustion gases then flow through openings 21 and 22 back into the inner tube 15 and from there into the environment.
  • the bypass passage 19 is in turn encompassed by a cylindrical sound-trapping chamber 23, the inner sound passage wall 24 of which is perforated with a multiplicity of sound passage openings 25 only indicated.
  • the sound waves passing through the sound passage openings 25 from the bypass channel 19 into the sound-trapping chamber 23 are strongly damped with respect to the higher frequencies contained in the frequency spectrum and thus the desired damping effect is made possible.
  • the deflection element 20 the flow path of the combustion gases along the Schall shedswandung 24 is greatly extended with the sound passage openings 25 and thus increases the damping effect accordingly.
  • the insulating wool 26 in the sound trap chamber 23 is in Fig. 2 again indicated by dashed lines.
  • the front part of the inner tube 15 may also be perforated with sound passage openings 25 in front of the openings 18 in order to allow the passage of sound waves when the valve device 17 is open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP11196003.5A 2011-01-14 2011-12-29 Agencement d'échappement destiné à l'utilisation avec un moteur à combustion interne Withdrawn EP2476871A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011001554U DE202011001554U1 (de) 2011-01-14 2011-01-14 Auspuffanordnung zur Verwendung mit einem Verbrennungsmotor

Publications (2)

Publication Number Publication Date
EP2476871A2 true EP2476871A2 (fr) 2012-07-18
EP2476871A3 EP2476871A3 (fr) 2013-10-30

Family

ID=43878064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11196003.5A Withdrawn EP2476871A3 (fr) 2011-01-14 2011-12-29 Agencement d'échappement destiné à l'utilisation avec un moteur à combustion interne

Country Status (3)

Country Link
US (1) US20120181106A1 (fr)
EP (1) EP2476871A3 (fr)
DE (1) DE202011001554U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11076951B2 (en) 2012-09-25 2021-08-03 Edwards Lifesciences Corporation Systems for replacing a native heart valve and aorta with a prosthetic heart valve and conduit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10443479B2 (en) 2014-10-30 2019-10-15 Roush Enterprises, Inc. Exhaust control system
WO2017079156A1 (fr) * 2015-11-02 2017-05-11 Roush Enterprises, Inc. Silencieux à voies d'échappement sélectionnées

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69702447T2 (de) 1996-04-22 2001-02-22 Wilhelmus Lambertus Arnoldus Meusen Abgasvorrichtung für brennkraftmaschinen und fahrzeug mit dieser vorrichtung

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US207384A (en) * 1878-08-27 Improvement in nozzles for the escape of steam or gases under pressure
US810542A (en) * 1905-09-09 1906-01-23 William R Kahlenberg Exhaust-muffler.
US1287239A (en) * 1918-06-03 1918-12-10 Don S Cook Adjustable gas-engine-muffler attachment.
US1613322A (en) * 1921-03-21 1927-01-04 Julius F Goetz Muffler
US1860146A (en) * 1929-02-15 1932-05-24 Emmet P Gray Muffler
US2625234A (en) * 1950-05-10 1953-01-13 Perry B Fina Valve controlled muffler with a plurality of through passages
US3097074A (en) * 1960-11-07 1963-07-09 Gen Motors Corp Catalytic converter
SE517825C2 (sv) * 1997-11-14 2002-07-23 Volvo Car Corp Anordning och förfarande vid ljuddämpande enhet samt användning av anordningen vid ett motorfordon
US5979596A (en) * 1998-07-23 1999-11-09 Baker; Gary A. Automatic compression brake muffler
JP2000230416A (ja) * 1999-02-08 2000-08-22 Honda Motor Co Ltd 内燃機関の排気切り換えバルブの故障検知装置
US6612400B2 (en) * 2002-01-05 2003-09-02 Andres E. Bravo Electronically controlled variable loudness muffler
US7510051B2 (en) * 2005-05-12 2009-03-31 Timothy Daniel Schrandt Switchable loud and quiet exhaust apparatus
DE102006044381B4 (de) * 2005-09-23 2015-07-30 Werner Müller Abgasvorrichtung mit sekundärer Leistungs- bzw. Drehmomentsteuerung bzw. -regelung
US7380638B2 (en) * 2006-04-24 2008-06-03 Willey Barry A Exhaust noise control for motorcycles
US20080023264A1 (en) * 2006-07-27 2008-01-31 Pacini Larry W Muffler having adjustable butterfly valve for improved sound attenuation and engine performance
US20080078613A1 (en) * 2006-09-29 2008-04-03 Chin-Chi Liu Exhaust pipe structure improvement
US7434570B2 (en) * 2007-03-16 2008-10-14 Tenneco Automotive Operating Company Inc. Snap-action valve for exhaust system
US7896130B2 (en) * 2009-05-22 2011-03-01 Tenneco Automotive Operating Company Inc. Snap action valve with inertia damper
US20100307864A1 (en) * 2009-06-09 2010-12-09 Bohata John F Automotive muffler having means for switching between loud and quieter modes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69702447T2 (de) 1996-04-22 2001-02-22 Wilhelmus Lambertus Arnoldus Meusen Abgasvorrichtung für brennkraftmaschinen und fahrzeug mit dieser vorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11076951B2 (en) 2012-09-25 2021-08-03 Edwards Lifesciences Corporation Systems for replacing a native heart valve and aorta with a prosthetic heart valve and conduit

Also Published As

Publication number Publication date
EP2476871A3 (fr) 2013-10-30
US20120181106A1 (en) 2012-07-19
DE202011001554U1 (de) 2011-04-14

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