EP3004577B1 - Système d'échappement pour moteur à combustion interne et procédé permettant de faire fonctionner le système d'échappement - Google Patents

Système d'échappement pour moteur à combustion interne et procédé permettant de faire fonctionner le système d'échappement Download PDF

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Publication number
EP3004577B1
EP3004577B1 EP14719765.1A EP14719765A EP3004577B1 EP 3004577 B1 EP3004577 B1 EP 3004577B1 EP 14719765 A EP14719765 A EP 14719765A EP 3004577 B1 EP3004577 B1 EP 3004577B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
exhaust system
silencer
internal combustion
combustion engine
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.)
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Application number
EP14719765.1A
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German (de)
English (en)
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EP3004577A1 (fr
Inventor
Rainer Drees
Christian Eichmüller
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication date
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Publication of EP3004577A1 publication Critical patent/EP3004577A1/fr
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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
    • 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
    • F01N13/04—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 silencers in parallel, e.g. having interconnections for multi-cylinder engines
    • 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
    • F01N1/023—Helmholtz resonators
    • 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
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • 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 gas 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
    • 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
    • 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
    • F01N13/02—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 silencers 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
    • 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

Definitions

  • the invention relates to an exhaust system for an internal combustion engine with the features of the preamble of patent claim 1 and method for operating the exhaust system according to the features of the claims 4 to 6.
  • an exhaust system of an internal combustion engine is known with a first exhaust gas line assigned to a first cylinder group of the internal combustion engine and with a second exhaust gas line assigned to a second cylinder group of the internal combustion engine.
  • Each exhaust gas line has in each case an exhaust gas purification device and a first exhaust silencer arranged downstream of the respective exhaust gas purification device, as well as a second silencer downstream of the respective first silencer and an exhaust gas end pipe arranged downstream of the respective second silencer.
  • a disadvantage of this known prior art is the fact that the damping resonator of the muffler is not variably adjustable.
  • Further mufflers for exhaust systems are generally known from the prior art, which operate on the absorption and / or reflection principle.
  • the development of such a muffler usually means finding the best possible compromise between muzzle noise (volume after the tailpipe tailpipe), exhaust back pressure and required muffler volume.
  • silencer with one or more movable closure elements or shut-off devices, such as an exhaust flap, executed to allow different flow paths in the exhaust pipe of the silencer system.
  • two, three or even four exhaust system tailpipes are often provided.
  • the arrangement of the closure elements leads disadvantageously to the fact that, depending on the position of the closure element, exhaust gas tailpipes or tailpipe branching elements are no longer flowed through with exhaust gas.
  • Object of the present invention is to avoid the disadvantages mentioned above and at the same time introduce a variability in the damping properties of the silencer system.
  • the inventive design of the exhaust system has a structure advantageous with respect to the exhaust backpressure. Due to the construction according to the invention, one or both shut-off valves can also be closed at the same time without a substantial increase in the exhaust backpressure. Compared with conventional exhaust systems exists with open shut-off devices, such. B. exhaust valves a minimum or hardly measurable throttling (increase in the exhaust backpressure), since the entire exhaust and damping tube volume is used to the end of the exhaust system. By a slightly different structure, the shut-off valves can also be shifted in time to improve a subjective hearing impression during the switching phase. By staggered switching the two shut-off devices can be reduced to conspicuous acoustic level jumps in an advantageous manner.
  • the very low exhaust back pressure of the exhaust system due to the inventive design has a very positive effect.
  • the volumes of the first silencer and the second silencer can also be subsequently changed.
  • one or more possibly necessary resonators can be easily integrated in the exhaust system while maintaining the symmetry in a simple manner.
  • the silencer can also be constructed very favorably.
  • the exhaust pipes ( Fig. 1 , Area a) can be manufactured and installed as equal components.
  • the Y-branching elements from the exhaust pipes to the damping pipes can be implemented, for example, as hydroforming (hydroforming). It can thus be used as a common part before and after the obturator and on both sides of the muffler.
  • damper pipes with perforation which are led through the silencer ( Fig. 1 , Area d), are also implemented as equal parts.
  • the required partitions for both sides can also be implemented as a common part.
  • the identical mounting device can be used for the pre-assembly of the Y-branch elements and the shut-off devices for both sides of the exhaust system.
  • Fig. 1 shows an end portion of an exhaust system 1 according to the invention for an internal combustion engine, not shown, with at least a first and a second, also not shown cylinder.
  • the first and the second cylinder are representative of cylinder groups of the internal combustion engine.
  • the first cylinder is a first exhaust pipe 2 and the second cylinder is associated with a second exhaust pipe 3.
  • Next is the first exhaust pipe 2, a first muffler 4 and the second exhaust pipe 3, a second muffler 5 assigned.
  • a second damping pipe 3 ' branches from the first exhaust pipe 2 upstream of a first obturator 6 from a first damping tube 2 ', which is guided by the first muffler 4 and flows into the second exhaust pipe 3 downstream of a second obturator 7 and that of the second exhaust pipe 3 upstream of the second obturator 7, a second damping pipe 3 'branches off, which is guided through the second silencer 5 and opens into the first exhaust pipe 2 downstream of the first obturator 6.
  • Flow directions of the exhaust gas are the Fig. 2 to 4 removable, which are represented by arrows.
  • the first damping tube 2 'and the second damping tube 3' in the volume of the first muffler 4 and in the region of the second muffler 5, a perforation 11 for emitting sound emissions in the muffler 4, 5 for frequency-selective damping the sound pressure level.
  • the first and the second obturator 6, 7 is an exhaust valve, in other embodiments, it may also be for example rollers.
  • the first and the second muffler 4, 5 are arranged in a common housing 8 for the sake of common parts. In another embodiment, they may also have more expensive, separate housings.
  • a first resonator chamber 9 is associated with the first damping tube 2 'in the present exemplary embodiment
  • a second resonator chamber 10 is associated with the second damping tube 3'.
  • An acoustic coupling between the first damping tube 2 'and the first resonator chamber 9 or the second damping tube 3' and the second resonator chamber 10 takes place in each case by a numbered 12 Helmholtz resonator.
  • the first and second resonator chambers 9, 10 are integrated into the common housing 8.
  • the resonator chambers 9, 10 can also be represented in separate housings.
  • the first and second resonator chambers 9, 10 can also be designed as reflection chambers.
  • the muffler housing 8 can be implemented, for example, as a cost-effective coil damper or in shell construction. When implemented as a winding damper, the two side parts can be designed as a common part. In shell construction, the upper and lower shell can each be made as a common part.
  • the exhaust pipes 2, 3 ( Fig. 1 , Area a) can be manufactured and installed as equal components.
  • the Y-branching elements from the exhaust pipes to the damping pipes can be implemented, for example, as hydroformed (hydroforming). It can thus be used as a common part before and after the shut-off elements 6, 7 and on both sides of the muffler 4, 5.
  • damping tubes 2 ', 3' with perforation which are guided through the muffler 4, 5 ( Fig. 1 , Area d), are also implemented as equal parts.
  • the required partitions for both sides can also be implemented as a common part.
  • the identical mounting device can be used for the pre-assembly of the Y-branch elements and the shut-off elements 6, 7 for both sides of the exhaust system 1.
  • FIGS. 2 to 4 show the same exhaust system as Fig. 1 but without the Helmholzresonatoren invention 12 and without the first and the second resonator chamber 9, 10, which may also be designed as reflection chambers.
  • Fig. 2 shows the exhaust system 1 with a setting for a first operating method, wherein the first and the second obturator 6, 7 are closed. By this setting, a maximum sound attenuation for the exhaust system 1 is achieved. A flow direction of the exhaust gas is indicated by arrows.
  • Fig. 3 shows the exhaust system 1 with a setting for a second operating method, wherein the first obturator 6 is closed and the second obturator 7 is opened.
  • This setting an average sound attenuation for the exhaust system 1 is achieved.
  • the main exhaust gas flow is shown by thick arrows, a weakened exhaust gas flow is shown by thin arrows.
  • Fig. 4 shows the exhaust system 1 with a setting for a third operating method, wherein the first and the second obturator 6, 7 are open.
  • a minimum sound attenuation for the exhaust system 1 is achieved.
  • the main exhaust gas flow is again shown by thick arrows, a weakened exhaust gas flow is shown by thin arrows.
  • the exhaust system 1 according to the invention has a very advantageous construction with regard to the exhaust backpressure.
  • one or both shut-off elements 6, 7 can also be closed at the same time without a substantial increase in the exhaust backpressure.
  • B. exhaust valves a minimum or hardly measurable throttling (increase in the exhaust backpressure), since the entire exhaust and damping tube volume is used to the end of the exhaust system 1.
  • the shut-off valves 6, 7 can also be switched in time to improve a subjective hearing impression during the switching phase.
  • the staggered switching of the two shut-off elements 6, 7 can be reduced to conspicuous, acoustic level jumps in an advantageous manner.
  • the very low exhaust backpressure of the exhaust system 1 due to the embodiment according to the invention has a very positive effect.
  • the volumes of the first muffler 4 and the second muffler 5 can also be subsequently changed.
  • one or more possibly necessary resonator chambers 9, 10, which are also designed as reflection chambers, can be integrated into the exhaust system 1 in a simple manner without great expense while retaining the symmetry.

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

Claims (6)

  1. Installation de gaz d'échappement (1) d'un moteur à combustion interne comprenant au moins un premier cylindre et un second cylindre, une première conduite de gaz d'échappement (2) associée au premier cylindre et une seconde conduite de gaz d'échappement associée au second cylindre, un premier pot d'échappement (4) étant associé à la première conduite de gaz d'échappement (2), et un second pot d'échappement (5) étant associé à la seconde conduite de gaz d'échappement (3),
    une première conduite d'amortissement (2') dérivant en amont d'un premier organe d'arrêt (6), qui traverse le premier pot d'échappement (4), et débouche dans la seconde conduite de gaz d'échappement (3), en aval d'un second organe de blocage (7), et une seconde conduite d'amortissement (3') dérive de la seconde conduite de gaz d'échappement (3) en amont du second organe d'arrêt (7), qui traverse le second pot d'échappement (5) et débouche dans la première conduite de gaz d'échappement (2) en aval du premier organe d'arrêt (6),
    la première conduite de gaz d'échappement (2) et la seconde conduite de gaz d'échappement (3) étant réalisées sans perforation, la première conduite de gaz d'échappement (2') avec les perforations (11) traversant le premier pot d'échappement (4) et la seconde conduite d'amortissement (3') avec les perforations (11), traversant le second pot d'échappement (5),
    caractérisée en ce qu'
    une première chambre de résonateur (9) est associée à la première conduite d'amortissement (2') et une seconde chambre de résonateur (10) est associée à la seconde conduite d'amortissement (3'), un couplage acoustique étant réalisé entre la première conduite d'amortissement (2') et la première chambre de résonance (9) et entre la seconde conduite d'amortissement (3') et la seconde chambre de résonateur (10), à chaque fois par l'intermédiaire d'un résonateur de Helmholtz (12).
  2. Installation de gaz d'échappement pour un moteur à combustion interne conforme à la revendication 1,
    caractérisée en ce que
    le premier pot d'échappement et le second pot d'échappement (4, 5) sont montés dans un carter commun (8).
  3. Installation de gaz d'échappement pour un moteur à combustion interne conforme à la revendication 2,
    caractérisée en ce que
    la première chambre de résonateur et la seconde chambre de résonateur (9, 10) sont intégrées dans le carter commun (8).
  4. Procédé de gestion d'une installation de gaz d'échappement conforme à l'une des revendications 1 à 3, destiné à un moteur à combustion interne,
    caractérisé par les étapes suivantes consistant à :
    - ouvrir le premier organe d'arrêt et le second organe d'arrêt (6, 7) pour obtenir un amortissement sonore minimum.
  5. Procédé de gestion d'une installation de gaz d'échappement d'un moteur à combustion interne conforme à l'une des revendications 1 à 3,
    caractérisé par l'étape suivante consistant à :
    - ouvrir le premier organe d'arrêt (6) et fermer le second organe d'arrêt (7) pour obtenir un amortissement sonore moyen.
  6. Procédé de gestion d'une installation de gaz d'échappement destinée à un moteur à combustion interne conforme à l'une des revendications 1 à 3,
    caractérisé par l'étape suivante consistant à :
    - fermer le premier organe d'arrêt et le second organe d'arrêt (6, 7) pour obtenir une atténuation sonore maximum.
EP14719765.1A 2013-06-05 2014-04-28 Système d'échappement pour moteur à combustion interne et procédé permettant de faire fonctionner le système d'échappement Active EP3004577B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013210464.2A DE102013210464A1 (de) 2013-06-05 2013-06-05 Abgasanlage für eine Brennkraftmaschine und Verfahren zum Betreiben der Abgasanlage
PCT/EP2014/058541 WO2014195062A1 (fr) 2013-06-05 2014-04-28 Système d'échappement pour moteur à combustion interne et procédé permettant de faire fonctionner le système d'échappement

Publications (2)

Publication Number Publication Date
EP3004577A1 EP3004577A1 (fr) 2016-04-13
EP3004577B1 true EP3004577B1 (fr) 2018-04-18

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EP14719765.1A Active EP3004577B1 (fr) 2013-06-05 2014-04-28 Système d'échappement pour moteur à combustion interne et procédé permettant de faire fonctionner le système d'échappement

Country Status (5)

Country Link
US (1) US9945280B2 (fr)
EP (1) EP3004577B1 (fr)
CN (1) CN105164381B (fr)
DE (1) DE102013210464A1 (fr)
WO (1) WO2014195062A1 (fr)

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DE102015007767A1 (de) * 2015-06-18 2016-12-22 Dr. Ing. H.C. F. Porsche Ag Schalldämpfer für eine Abgasanlage eines Kraftfahrzeugs, Abgasanlage und Kraftfahrzeug
DE102015211460A1 (de) 2015-06-22 2016-12-22 Bayerische Motoren Werke Aktiengesellschaft Abgasanlage
RS58197B1 (sr) * 2015-07-16 2019-03-29 Akrapovic D D Izduvni sistem za samohodne motore sa unutrašnjim sagorevanjem
DE102015122036A1 (de) * 2015-12-16 2017-06-22 Fischer Rohrtechnik Gmbh Drosselklappenanordnung für einen Abgasstrang oder einen Zuluftstrang eines Verbrennungsmotors
CN109899132A (zh) * 2017-12-11 2019-06-18 郑州宇通客车股份有限公司 排气管后处理器及车辆
DE102018104239A1 (de) * 2018-01-22 2019-07-25 Eberspächer Exhaust Technology GmbH & Co. KG Schalldämpfer
US11293664B2 (en) * 2018-03-06 2022-04-05 Gulfstream Aerospace Corporation Dual tube silencer for separate gas flows
US10596898B2 (en) * 2018-05-07 2020-03-24 Tenneco Automotive Operating Company Inc. Muffler assembly including a center muffler and two satellite mufflers
US10584626B2 (en) 2018-05-07 2020-03-10 Tenneco Automotive Operating Company Inc. Muffler assembly including a center muffler and two satellite mufflers
US10767543B2 (en) * 2018-07-20 2020-09-08 Tenneco Automotive Operating Company Inc. Reduced length exhaust system with valve
US11746688B1 (en) 2018-10-27 2023-09-05 David Akiba Borla Cross-pipe exhaust assembly
US11326501B2 (en) * 2018-10-27 2022-05-10 David Akiba Borla Cross-pipe exhaust system
US11692470B2 (en) 2019-06-07 2023-07-04 Tenneco Automotive Operating Company Inc. Exhaust system and muffler
US11661882B1 (en) * 2020-06-23 2023-05-30 Normand A. St. Pierre Modified exhaust system with oxygen sensor

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WO2014183978A1 (fr) * 2013-05-15 2014-11-20 Bayerische Motoren Werke Aktiengesellschaft Système d'échappement d'un moteur à combustion interne et procédé permettant de faire fonctionner un système d'échappement

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JP2723948B2 (ja) * 1988-02-18 1998-03-09 マツダ株式会社 エンジンの制御装置
US5144799A (en) * 1991-07-18 1992-09-08 Barth Randolph S Crossfire calibrated exhaust system
US8469142B2 (en) 2006-08-07 2013-06-25 Zhanzhao Feng Muffler assembly
DE102009032213B4 (de) 2009-07-06 2024-05-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Abgasanlage einer Brennkraftmaschine
DE102009032214B4 (de) * 2009-07-06 2023-10-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Abgasanlage einer Brennkraftmaschine
DE102009032215A1 (de) 2009-07-06 2011-01-27 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Abgasanlage einer Brennkraftmaschine
DE102011051690B4 (de) * 2011-07-08 2023-06-29 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Steuerungseinrichtung eines Kraftfahrzeugs mit einem Geräuschübertragungssystem und einem Abgassystem
DE202012002948U1 (de) * 2012-03-23 2012-04-03 The Jekill & Hyde Company Bv Auspuffanordnung zur Verwendung mit einem Verbrennungsmotor

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Also Published As

Publication number Publication date
WO2014195062A1 (fr) 2014-12-11
EP3004577A1 (fr) 2016-04-13
DE102013210464A1 (de) 2014-12-11
US9945280B2 (en) 2018-04-17
US20160024989A1 (en) 2016-01-28
CN105164381B (zh) 2018-07-13
CN105164381A (zh) 2015-12-16

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