EP2105587B1 - Installation de gaz d'échappement - Google Patents

Installation de gaz d'échappement Download PDF

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Publication number
EP2105587B1
EP2105587B1 EP09003500A EP09003500A EP2105587B1 EP 2105587 B1 EP2105587 B1 EP 2105587B1 EP 09003500 A EP09003500 A EP 09003500A EP 09003500 A EP09003500 A EP 09003500A EP 2105587 B1 EP2105587 B1 EP 2105587B1
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EP
European Patent Office
Prior art keywords
exhaust
exhaust system
silencer
vehicle
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.)
Active
Application number
EP09003500A
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German (de)
English (en)
Other versions
EP2105587A3 (fr
EP2105587A2 (fr
EP2105587B2 (fr
Inventor
Jan Dr. Krüger
Frank Castor
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.)
Eberspaecher Exhaust Technology GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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Publication date
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Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP2105587A2 publication Critical patent/EP2105587A2/fr
Publication of EP2105587A3 publication Critical patent/EP2105587A3/fr
Publication of EP2105587B1 publication Critical patent/EP2105587B1/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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • 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
    • F01N2470/10—Tubes having non-circular cross section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/20—Dimensional characteristics of tubes, e.g. length, diameter

Definitions

  • the present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having the features of the preamble of claim 1.
  • the present invention is concerned with the problem of providing for an exhaust system of the type mentioned an improved embodiment, which is characterized in particular by a reduced weight.
  • the invention is based on the general idea of equipping the exhaust system equipped with an active muffler with a tailpipe designed as a diffuser.
  • the diffuser is characterized in that its outlet region, through which the exhaust gas can escape into the environment during operation of the internal combustion engine, is dimensioned larger in a first direction running transversely to the main flow direction of the exhaust gas than in a direction transverse to the first transverse direction and transversely to the exhaust main flow direction second transverse direction.
  • the exit area of the diffuser is thus not round, but rather elongated or flat.
  • the invention uses the knowledge that modern Internal combustion engines, especially in diesel engines, already with an active silencer sufficient sound attenuation can be achieved, especially in the low-frequency range.
  • the exhaust gas can be distributed spatially distributed over a larger area in the environment, resulting in an improved mixing with ambient air and thus an improved cooling of the exhaust gas can be realized. Overheating in the area of the vehicle floor can thereby be effectively avoided.
  • the proposed combination of diffuser and active silencer makes it possible to build the exhaust system comparatively short and thus easy, while at the same time a sufficient sound attenuation can be realized.
  • the active muffler is arranged in a housing which also contains at least one passive absorption muffler.
  • the absorption silencer acts with regard to higher frequencies that are not attenuated by the active silencer and incurred during operation of the internal combustion engine and transported through the exhaust system.
  • the housing may be optionally equipped as mentioned with at least one passive absorption muffler.
  • the housing may be optionally equipped as mentioned with at least one passive absorption muffler.
  • this embodiment is dispensed with any muffler, which would be installed in addition to the active muffler upstream or downstream thereof in the exhaust system. This can save considerable costs for the realization of the exhaust system. Furthermore, this is accompanied by a corresponding weight reduction.
  • the components of the exhaust system may be coordinated so that the outlet region of the diffuser is located in a motor vehicle with front engine relative to a vehicle longitudinal direction in a central region of the vehicle floor.
  • the exit region of the diffuser ie the tailpipe is thus not at the rear of the vehicle, but approximately in the middle of the vehicle.
  • the feasible shortening of the exhaust system is significant, which can be used to a considerable weight saving.
  • Fig. 1 is a motor vehicle 1 equipped with an internal combustion engine 2, which has an exhaust system 3.
  • the vehicle 1 is a road vehicle with at least four wheels 4, that is in particular not a two-wheeler.
  • the vehicle 1 is preferably a passenger car.
  • the internal combustion engine 2 also has a fresh gas system 5. This is connected via at least one fresh gas distributor 6 to the internal combustion engine 2 and serves to supply fresh gas, usually air, to the internal combustion engine. 2
  • the exhaust system 3 has at least one exhaust gas collector 7, via which the exhaust system 3 is connected to the internal combustion engine 2.
  • the exhaust system 3 is used for discharging exhaust gases of the internal combustion engine 2 in order to supply them to an environment 8, which is indicated by arrows 9.
  • an exhaust pipe 10 connects, which leads to an end pipe 11 of the exhaust system 3.
  • the exhaust system 3 contains at least one exhaust gas purification device 12, which may expediently be a catalyst and / or a particle filter.
  • further exhaust gas purification devices may be provided, which may be, for example, SCR catalysts with a reducing agent injection, such as ammonia, urea or aqueous urea solution and / or three-way catalysts and the like.
  • the exhaust system 3 includes at least one muffler 13.
  • Fig. 1 is also shown in simplified form a turbine 14 of an exhaust gas turbocharger, which is incorporated here between the exhaust manifold 7 and the exhaust gas purification device 12 in the exhaust pipe 10.
  • the turbine 14 drives via an operative connection 15 to a compressor 16 of the exhaust gas turbocharger, which is expediently arranged upstream of the fresh gas distributor 6 in the fresh gas system 5.
  • Such an exhaust-gas turbocharger 14, 15, 16 is preferably provided when the internal combustion engine 2 is a diesel engine.
  • such an exhaust gas turbocharger 14, 15, 16 may also be provided in an internal combustion engine 2 designed as a gasoline engine.
  • the muffler 13 is designed as an active muffler. For this purpose, it has at least one loudspeaker 17 with the aid of which the active silencer 13 can generate counter-sound or anti-sound during operation.
  • the active silencer 13 is expediently designed for comparatively low frequencies. For example, it is designed for sound attenuation for frequencies with a maximum of about 500 Hz. A required for operating the active muffler 13 control is not shown here for simplicity.
  • the active muffler 13 has a housing 18 by means of which it is installed in the exhaust pipe 10.
  • at least one passively operating absorption silencer 19 can also be formed in this housing 18.
  • Such an absorption silencer 19 can be realized, for example, by a volume filled with a corresponding sound-absorbing substance in the housing 18.
  • Said absorption muffler 19 can be suitably designed for higher frequencies. For example the absorption muffler 19 designed for frequencies with a minimum of about 500 Hz.
  • the exhaust system 3 exclusively on this one active muffler 13, wherein it may be formed as a module and in its housing 18 may additionally contain at least the one passive absorption muffler 19.
  • the tailpipe 11 is configured in the exhaust system 3 according to the invention as a diffuser 20, which introduces the exhaust gas diffusely into the environment 8.
  • the diffuser 20 has according to the FIGS. 1 to 3 an exit region 21 through which the exhaust gas exits into the environment 8.
  • This outlet region 21 is designed flat or slit-shaped.
  • the exit region 21 has a first transverse dimension 23 and a second transverse dimension 24.
  • the first transverse dimension 23 extends in a first transverse direction 25, which is transverse to Main flow direction 22 of the exhaust gas extends.
  • the second transverse dimension 24 extends in a second transverse direction 26, which extends to one transverse to the first transverse direction 25 and the other transversely to the exhaust main flow direction 22.
  • the first transverse dimension 23 is considerably larger than the second transverse dimension 24.
  • the first transverse dimension 23 is at least approximately five times larger than the second transverse dimension 24.
  • the diffuser 20 has a flat channel 28.
  • the flat channel 28 on the one hand provides the transition from the inlet region 27 with the round cross section in the Flat channel 28 and on the other hand, the transition from flat channel 28 to the flat or elongated cross section of the exit region 21.
  • the exit region 21 is suitably arranged on the vehicle floor so that the first transverse direction 25 extends horizontally, while the second transverse direction 26 extends substantially vertically, so that there is a substantially vertical exit plane.
  • this exit plane may also be inclined with respect to a vertical plane, so that the exhaust main flow direction 22 also has or only a downwardly oriented component.
  • the individual components of the exhaust system 3 are suitably coordinated so that the outlet region 21 of the diffuser 20 in the vehicle 1 shown, in which the internal combustion engine 2 is arranged at the front, in a central region 29 of a vehicle floor 30 is arranged.
  • the central region 29 refers to a longitudinal direction 31 of the vehicle 1 and is located in particular between the front axle and rear axle of the vehicle 1.
  • the exhaust system 3 are thus built extremely short, since the exit region 21 is already in the vehicle center 29 and not as in conventional vehicles at a vehicle rear.
  • the components of the exhaust system 3 can appropriately be coordinated with one another such that an exhaust path from the internal combustion engine 2 to the surroundings 8 is at most approximately 2 m.
  • the exhaust pipes 10 can be shortened considerably, which can be used to a significant weight reduction.
  • the exhaust gas can be discharged via the tailpipe 11 before, that is, upstream of a rear axle of the vehicle 1.
  • the embodiment of the tailpipe 11 as a diffuser 20 also causes a sufficient cooling of the exhaust gases, even with a large exhaust gas mass flow and hot exhaust gases, since they are conducted along the vehicle floor 30 over a relatively large area, namely along the large first transverse direction 23 in the environment 8 , whereby an intensive mixing with the ambient air can be achieved. Accordingly, overheating of the vehicle floor 30 in the region of the exit region 21 is not to be feared.
  • a suitable heat protection plate or the like may be provided on the vehicle floor 30 in a section assigned to the outlet area 21, in order to avoid direct loading of the vehicle floor 30 with hot exhaust gases in the central area 29.
  • the exhaust gas main flow direction 22 in the tail pipe 11 extends parallel to the vehicle longitudinal direction 31, so that the exit region 21 extends with its first transverse direction 25 horizontally and transversely to the vehicle longitudinal direction 31.
  • the number of required connection points between exhaust system 3 and vehicle 1 can be reduced, at the same time a higher first natural bending frequency for the exhaust system 3 can be realized, which improves their durability.
  • the sum of these advantages results in cost savings which can compensate for the additional cost of the active components of the muffler 13, such as electronics and speakers 17 and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (7)

  1. Installation de gaz d'échappement pour un moteur à combustion interne (2), en particulier dans un véhicule automobile (1), comprenant
    - au moins un collecteur de gaz d'échappement (7) pour le raccordement de l'installation de gaz d'échappement (3) à un moteur à combustion interne (2),
    - au moins un dispositif de purification de gaz d'échappement (12),
    - au moins un silencieux (13),
    - au moins un pot d'échappement (11) ouvert vers l'environnement (8),
    le silencieux étant réalisé sous forme de silencieux actif (13) qui fonctionne avec au moins un haut-parleur (17) pour la génération d'antibruit,
    caractérisée en ce que
    - le pot d'échappement (11) est configuré sous forme de diffuseur (20), dans lequel le gaz d'échappement peut sortir par une région de sortie (21) dans l'environnement (8), laquelle région de sortie est dimensionnée plus grande dans une première direction transversale (25) s'étendant transversalement à la direction d'écoulement principale (22) du gaz d'échappement que dans une deuxième direction transversale (26) s'étendant transversalement à la première direction transversale (25) et transversalement à la direction d'écoulement principale (22),
    - le silencieux actif (13) est disposé dans un boîtier (18) qui contient en outre au moins un silencieux à absorption passif (19), et
    - le silencieux à absorption (19) est conçu pour des fréquences de 500 Hz au minimum.
  2. Installation de gaz d'échappement selon la revendication 1,
    caractérisée en ce que
    le silencieux actif (13) est conçu pour des fréquences de 500 Hz au maximum.
  3. Installation de gaz d'échappement selon l'une quelconque des revendications 1 et 2,
    caractérisée en ce que
    le diffuseur (20) présente une région d'entrée (27) avec une section transversale ronde, qui se prolonge par un canal plat (28) conduisant vers la région de sortie (21).
  4. Installation de gaz d'échappement selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    les composants de l'installation de gaz d'échappement (3) sont adaptés les uns aux autres de telle sorte que la région de sortie (21) du diffuseur (20), dans le cas d'un véhicule automobile (1) avec moteur à l'avant (2), se trouve, par rapport à une direction longitudinale du véhicule (31), dans une région centrale (29) d'un plancher du véhicule (30).
  5. Installation de gaz d'échappement selon la revendication 4,
    caractérisée en ce que
    la première direction transversale (25) est orientée horizontalement, tandis que la deuxième direction transversale (26) est orientée verticalement.
  6. Installation de gaz d'échappement selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce que
    les composants de l'installation de gaz d'échappement (3) sont adaptés les uns aux autres de telle sorte qu'une voie de gaz d'échappement depuis le moteur à combustion interne (2) jusqu'à l'environnement (8) mesure au maximum 2 m.
  7. Véhicule, en particulier véhicule de tourisme, comprenant un moteur à combustion interne (2) qui présente une installation de gaz d'échappement (3) selon l'une quelconque des revendications 1 à 6.
EP09003500.7A 2008-03-27 2009-03-11 Installation de gaz d'échappement Active EP2105587B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810015929 DE102008015929A1 (de) 2008-03-27 2008-03-27 Abgasanlage

Publications (4)

Publication Number Publication Date
EP2105587A2 EP2105587A2 (fr) 2009-09-30
EP2105587A3 EP2105587A3 (fr) 2009-10-21
EP2105587B1 true EP2105587B1 (fr) 2012-07-04
EP2105587B2 EP2105587B2 (fr) 2016-09-21

Family

ID=40810050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09003500.7A Active EP2105587B2 (fr) 2008-03-27 2009-03-11 Installation de gaz d'échappement

Country Status (2)

Country Link
EP (1) EP2105587B2 (fr)
DE (1) DE102008015929A1 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB337871A (en) * 1929-08-29 1930-11-13 Cottrell Douglas Samuel Victor Improvements in exhaust silencers for engines of motor cars and motor cycles
DE1172561B (de) * 1961-03-04 1964-06-18 Nsu Motorenwerke Ag Heizeinrichtung fuer Kraftfahrzeuge
DE2345803A1 (de) * 1972-09-11 1974-03-21 Toyo Kogyo Co Auspuffgasaustrittseinrichtung fuer verbrennungsmotoren
DE2705748A1 (de) * 1977-02-11 1978-08-17 Alfred Thaufelder Heizung fuer kraftfahrzeuge
EP0085691B1 (fr) * 1981-08-11 1985-06-19 Sound Attenuators Limited Procede et dispositif d'attenuation active des basses frequences
DE3509016A1 (de) * 1984-03-13 1985-09-26 Tovarna Avtomobilov in Motorjev n.sol.o., Tozd Raziskave in razvoj n.sol.o., Maribor Abgasheizungsvorrichtung fuer kraftfahrzeuge und motorangetriebene wasserfahrzeuge
EP0227372A2 (fr) * 1985-12-18 1987-07-01 Nelson Industries, Inc. Amortisseur de son actif hybride
DE4027511C1 (fr) * 1990-08-30 1991-10-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen, De
WO1993005282A1 (fr) * 1991-08-29 1993-03-18 Active Noise And Vibration Technologies Inc. Pot d'echappement
WO1993009334A1 (fr) * 1991-10-30 1993-05-13 Noise Cancellation Technologies, Inc. Silencieux presentant une configuration creant un effet venturi
DE4428493A1 (de) * 1993-08-12 1995-02-23 Calsonic Corp Akitver Abgasschalldämpfer
EP0647343B1 (fr) * 1992-06-08 1997-04-23 Ford-Werke Aktiengesellschaft Agencement de transducteurs pour systemes de suppression active de bruit
DE102004040421A1 (de) * 2004-08-19 2006-03-09 J. Eberspächer GmbH & Co. KG Aktiver Abgasschalldämpfer
WO2007022324A2 (fr) * 2005-08-16 2007-02-22 Daimler Trucks North America Llc Dispositif de dilution et de dispersion d'echappement pour vehicule

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813734B2 (ja) * 1977-12-13 1983-03-15 トヨタ自動車株式会社 エンジンの排気デイフユ−ザ
GB9003959D0 (en) * 1990-02-21 1990-04-18 Ross Colin F Active control of internal combustion engine performance
DE4110750A1 (de) 1991-04-03 1992-10-08 Hansbernd Berzheim Verfahren und vorrichtung zur erzeugung von abtrieb am unterboden von renn- und sportfahrzeugen
IT1267402B1 (it) * 1994-02-22 1997-02-05 Electronic Sound Attenuation S Silenziatore attivo per gas di scarico.
US5693918A (en) * 1994-09-06 1997-12-02 Digisonix, Inc. Active exhaust silencer
US6283162B1 (en) * 1999-09-09 2001-09-04 Boyd L. Butler Thin boom tube exhaust pipes, method of sheet metal construction thereof, and exhaust systems which utilize such exhaust pipes for increased ground clearance on race cars

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB337871A (en) * 1929-08-29 1930-11-13 Cottrell Douglas Samuel Victor Improvements in exhaust silencers for engines of motor cars and motor cycles
DE1172561B (de) * 1961-03-04 1964-06-18 Nsu Motorenwerke Ag Heizeinrichtung fuer Kraftfahrzeuge
DE2345803A1 (de) * 1972-09-11 1974-03-21 Toyo Kogyo Co Auspuffgasaustrittseinrichtung fuer verbrennungsmotoren
DE2705748A1 (de) * 1977-02-11 1978-08-17 Alfred Thaufelder Heizung fuer kraftfahrzeuge
EP0085691B1 (fr) * 1981-08-11 1985-06-19 Sound Attenuators Limited Procede et dispositif d'attenuation active des basses frequences
DE3509016A1 (de) * 1984-03-13 1985-09-26 Tovarna Avtomobilov in Motorjev n.sol.o., Tozd Raziskave in razvoj n.sol.o., Maribor Abgasheizungsvorrichtung fuer kraftfahrzeuge und motorangetriebene wasserfahrzeuge
EP0227372A2 (fr) * 1985-12-18 1987-07-01 Nelson Industries, Inc. Amortisseur de son actif hybride
DE4027511C1 (fr) * 1990-08-30 1991-10-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen, De
WO1993005282A1 (fr) * 1991-08-29 1993-03-18 Active Noise And Vibration Technologies Inc. Pot d'echappement
WO1993009334A1 (fr) * 1991-10-30 1993-05-13 Noise Cancellation Technologies, Inc. Silencieux presentant une configuration creant un effet venturi
EP0647343B1 (fr) * 1992-06-08 1997-04-23 Ford-Werke Aktiengesellschaft Agencement de transducteurs pour systemes de suppression active de bruit
DE4428493A1 (de) * 1993-08-12 1995-02-23 Calsonic Corp Akitver Abgasschalldämpfer
DE102004040421A1 (de) * 2004-08-19 2006-03-09 J. Eberspächer GmbH & Co. KG Aktiver Abgasschalldämpfer
WO2007022324A2 (fr) * 2005-08-16 2007-02-22 Daimler Trucks North America Llc Dispositif de dilution et de dispersion d'echappement pour vehicule

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
M. L. MUNJAL: "Advances in the acoustics of flow ducts and mufflers, Sadhana,", 1 September 1990 (1990-09-01), pages 57 - 72 *
M.L. MUNJAL UND L.J. ERIKSSON: "Analysis of a hybrid noise control system for a duct", 1 August 1989 (1989-08-01), pages 832 - 834 *

Also Published As

Publication number Publication date
DE102008015929A1 (de) 2009-10-01
EP2105587A3 (fr) 2009-10-21
EP2105587A2 (fr) 2009-09-30
EP2105587B2 (fr) 2016-09-21

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