EP1400666A1 - Abgasanlage für eine Brennkraftmaschine - Google Patents
Abgasanlage für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP1400666A1 EP1400666A1 EP03015082A EP03015082A EP1400666A1 EP 1400666 A1 EP1400666 A1 EP 1400666A1 EP 03015082 A EP03015082 A EP 03015082A EP 03015082 A EP03015082 A EP 03015082A EP 1400666 A1 EP1400666 A1 EP 1400666A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust
- sound transmission
- exhaust system
- transmission device
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- 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
- 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
-
- 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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
Definitions
- the present invention relates to an exhaust system for a Internal combustion engine, in particular of a motor vehicle.
- the exhaust system has one or more silencers contains to the entrained with the exhaust gases exhaust noise attenuate.
- mufflers for certain frequencies or frequency bands designed in which they show their main effect while others do Frequencies no or only a relatively small damping effect can unfold.
- the operation of the internal combustion engine is dynamic, so that in the internal combustion engine especially speed and Performance can vary greatly. This usually goes one Change of radiated from the internal combustion engine Sound spectrum associated with, in particular, the main interference frequencies or move the main sound frequency ranges can. To the exhaust noise in a relatively large operating range optimally damp the engine can, therefore, a relatively large effort is required.
- the present invention deals with the problem for an exhaust system of the type mentioned an improved Specify embodiment, in particular the damping exhaust noise for a relatively large operating range the internal combustion engine simplified.
- the invention is based on the general idea, in a Exhaust system equipped with two separate exhaust lines is to provide a sound transmission device, the it allows targeted the exhaust noise of an exhaust line in the other exhaust system and vice versa too transfer or block.
- the invention uses the Recognizing that the exhaust noise of the internal combustion engine over a wide speed range by the at the ignition frequency and their integral multiple arising noise is characterized. This dominant frequency is at M cylinders and a four-stroke engine M / 2 times the speed of the Internal combustion engine.
- the ignition frequency is also essential responsible for the subjective sound character of the exhaust noise.
- the two separate exhaust systems which in itself with respect to a mutual sound transmission are decoupled from each other, depending on demand to couple a mutual sound transmission.
- this coupling transforms the sound character of the individual Exhaust strands, because now again the ignition frequency of the M-cylinder engine mainly determines the exhaust noise while the Sound of the ignition frequencies at the individual exhaust lines assigned cylinder groups, ie the ignition frequency of the K or L-cylinder engine comparatively strong declining.
- the for a specific speed range is designed by a corresponding control of Sound transmission device now for another Speed range with substantially doubled speed to be able to use.
- This is at the lower speed range the sound transmission device is active, so that the M / 2-order of the speed characterizes the exhaust noise.
- Speeds can then be the sound transmission device be deactivated, so that then the K / 2-order and the K / 2-order determine the exhaust noise.
- the cylinder numbers K and L are each half the size or half the size like the number of cylinders M, can with the invention Sound transmission device at higher speed ranges about the same sound characteristics as at half the speed be set. Accordingly, those are for one specific speed range designed muffler double or in a wider frequency range usable without this requires a structural change of the silencer is.
- first muffler assembly the first exhaust line and the second muffler assembly of the second exhaust line with respect to damping effect and / or flow resistance equal or substantially equal to train.
- the extent quasi identical exhaust strands or silencer arrangements can be relative be realized inexpensively.
- a control device which the Sound transmission device between a state with minimum Sound transmission and a state with maximum Sound transmission can switch, so that design the switching between said extreme conditions continuously or multi-stage feasible, so that at least an intermediate state is adjustable.
- this measure can between the imprinting effect of the individual cylinder groups (K / 2-order and L / 2-order) and the imprinting effect all cylinders (M / 2-order) multi-stage or continuous be switched, which makes it at a corresponding Design of the muffler arrangements possible is the speed range in which the muffler assemblies can achieve the desired damping effect clearly to enlarge.
- the sound transmission device can at least a hollow transmission tube, the one end in the enters an exhaust line and the other ends in the other Exhaust line opens. Through this transfer tube can the spreading in the individual exhaust strands Sound waves particularly light and quasi unattenuated by the one to the other exhaust system and vice versa.
- the two exhaust strands communicate with each other via the transfer tube, the means, the transmission tube allows when activated Sound transmission device a gas exchange between the two exhaust pipes.
- a gas exchange between the two exhaust pipes.
- a transfer tube achieved by a sound excitable, gas-tight membrane which is installed in the transfer tube.
- the attachment and design of the Sound transmission device such that it is independent of their switching state both in the one exhaust line and in the other exhaust system no or essentially none Pressure loss generated.
- FIG. 1 shows a much simplified schematic representation an exhaust system according to the invention.
- the 1 is an internal combustion engine 1, in particular a motor vehicle, with an exhaust system 2 after the Invention equipped.
- the exhaust system 2 is with two separate and parallel exhaust lines, namely a first exhaust line 3 and a second exhaust line 4, equipped.
- the first exhaust line 3 of a first group 5 is assigned by cylinders 6, the second exhaust line leads 4, the exhaust gases of a second cylinder group 7 from.
- the This example is the internal combustion engine 1 to a 6-cylinder engine, designed as a V-engine and accordingly two cylinder banks 8 and 9 each having three cylinders 6 has.
- the three cylinders 6 Each cylinder bank 8, 9 then each form a cylinder group 5 or 7.
- the Exhaust gases of the first cylinder group 5 of the first cylinder bank is an internal combustion engine 1, in particular a motor vehicle, with an exhaust system 2 after the Invention equipped.
- the exhaust system 2 is with two separate and parallel exhaust lines, namely a first exhaust line 3 and a second exhaust line 4, equipped.
- the first exhaust line 3 of a first group 5
- each exhaust line 3, 4 contains, for example a catalyst 10.
- the first exhaust line 3 also includes a first muffler assembly 11 and the second exhaust line 4 includes a second muffler assembly 12.
- Each muffler assembly 11, 12 comprises at least one muffler 13.
- the exhaust system 2 comprises a sound transmission device 14, which is a controllable transfer of the propagating in the individual exhaust lines 3, 4 Sound possible.
- a controller 15 is provided for controlling the sound transmission device 14.
- the Sound transmission device 14 essentially of a hollow transmission tube 16, the one end in the first exhaust line 3 and the other end in the second exhaust line. 4 opens.
- This transmission tube 16 is a control member 17th associated, which can be controlled by the control device 15 is.
- the control member 17 comprises here a flap 18, the order a pivot axis 19 is pivotable.
- Fig. 1 is with continuous line a closed position and with interrupted Line reproduced an open position for the flap 18. In this way, the sound transmission device 14 between a state with minimal sound transmission, which is present when the flap 18 is closed, and a Condition with maximum sound transmission occurring at (complete) open flap 18 is present, be switched.
- the invention now makes use of this knowledge, in which the muffler arrangements 11, 12, which is convenient for the sake of simplicity are formed identically and the e.g. in terms of damping effect and / or flow resistance equal or are formed substantially the same, for at least one Interference frequency or be designed for a Störfrequenzband.
- the exhaust noise is speed dependent, can by a suitable control of the sound transmission device 14 the ignition frequency responsible for the main noise be switched, namely from the higher ignition frequency all cylinders 6 with open flap 18 and the halved Ignition frequency of the individual cylinder bands 8, 9 when closed Flap 18.
- the control device 15 at low speeds open the flap 18, that is activate the sound transmission device 14, and at higher Turn the flap close 18, thereby the Sound transmission device 14 to disable.
- the operation of the sound transmission device takes place 14 speed-dependent and / or load-dependent, including the Control device 15 e.g. can access maps.
- Control member 17 and a slider or a diaphragm or a have other suitable component.
- control member 17 and the flap 18 is here (in the middle) between the ends of the transfer tube 16, so that an interaction of the flap 18 with the exhaust gas flows in the exhaust lines 3, 4 can be avoided.
- the sound transmission device 14 is also configured in this way or to the exhaust gas lines 3, 4 connected so that they have no or only negligible influence generated on the gas flows in the exhaust lines 3, 4. In particular, should any pressure loss in the exhaust lines 3, 4 are avoided. A particularly good sound transmission between the two exhaust lines 3, 4 can help with of the transfer tube 16 are then ensured when the transfer tube 16 in both exhaust lines 3, 4 open opens, so that the two exhaust lines 3, 4 when activated Sound transmission device 14 or at open Flap 18 communicate with each other through the transfer tube 16, which basically also a gas exchange between the two exhaust gas lines 3, 4 is possible. If such a Gas exchange is to be avoided is also conceivable in the Transfer tube 16 a corresponding gas-tight, flexible Membrane to arrange, by the sound waves to vibrations is excitable.
- the sound transmission device 14 in shown here Embodiment upstream of the muffler assemblies 11, 12 is arranged, the sound transmission device 14 basically at any point of the exhaust strands 3, 4 may be arranged.
- the Sound transmission device 14 and the transmission tube 16 between the mufflers 13 of the muffler assemblies 11, 12 or downstream of the muffler assemblies 11, 12 be arranged.
- the present invention is based on Consideration, on the one hand, the two separate exhaust lines 3, 4 so to design that between them no or essentially No sound transmission takes place, so everyone Exhaust line 3, 4 essentially only that of the respectively associated Cylinder groups 5, 7 each independently generated and / or dominated exhaust noise in the environment radiates.
- the sound transmission device 14 used specifically a sound transmission between the two exhaust lines 3, 4 cause, so that the exhaust lines 3, 4 then in terms of mutual Sound transmission are coupled together. This has As a result, both exhaust strands 3, 4 then each one of two cylinder groups 5, 6 generated jointly by superposition and / or dominated exhaust noise in the environment radiate.
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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)
Abstract
Description
Claims (12)
- Abgasanlage für eine Brennkraftmaschine, insbesondere eines Kraftfahrzeugsmit einem ersten Abgasstrang (3), der von einer ersten Zylindergruppe (5) der Brennkraftmaschine (1) zu einer Abgasmündung führt und eine erste Schalldämpferanordnung (11) enthält,mit einem vom ersten Abgasstrang (3) separaten zweiten Abgasstrang (4) der von einer zweiten Zylindergruppe der Brennkraftmaschine (1) zu einer Abgasmündung führt und eine zweite Schalldämpferanordnung (12) enthält,mit einer steuerbaren Schallübertragungseinrichtung (14), die sich in den Abgassträngen (3, 4) ausbreitenden Schall gesteuert vom Inneren des einen Abgasstrangs (3, 4) in das Innere des anderen Abgasstrangs (3, 4) überträgt und umgekehrt,mit einer Steuereinrichtung (15) zur Steuerung der Schallübertragungseinrichtung (14),wobei die Schallübertragungseinrichtung (14) einen Schaltzustand ermöglicht, bei dem keine oder im wesentlichen keine Schallübertragung zwischen den Abgassträngen (3, 4) erfolgt.
- Abgasanlage nach Anspruch 1,
dadurch gekennzeichnet, dass die erste Schalldämpferanordnung (11) und die zweite Schalldämpferanordnung (12) hinsichtlich Dämpfungswirkung und/oder Durchströmungswiderstand gleich oder im wesentlichen gleich ausgebildet sind. - Abgasanlage nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Steuereinrichtung (15) die Schallübertragungseinrichtung (14) zwischen einem Zustand mit minimaler Schallübertragung und einem Zustand mit maximaler Schallübertragung umschalten kann. - Abgasanlage nach Anspruch 3,
dadurch gekennzeichnet, dass das Umschalten zwischen den Extremzuständen kontinuierlich oder mehrstufig durchführbar ist, so dass wenigstens ein Zwischenzustand einstellbar ist. - Abgasanlage nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Schallübertragungseinrichtung (14) wenigstens ein hohles Übertragungsrohr (16) aufweist, das einenends in den einen Abgasstrang (3, 4) einmündet und anderenends in den anderen Abgasstrang (3, 4) einmündet. - Abgasanlage nach Anspruch 5,
dadurch gekennzeichnet, dass im oder am Übertragungsrohr (16) ein Steuerglied (17) angeordnet ist, das von der Steuereinrichtung (15) betätigbar ist und zur Steuerung der Schallübertragung durch das Übertragungsrohr (16) dient. - Abgasanlage nach Anspruch 6,
dadurch gekennzeichnet, dass das Steuerglied (17) einen Schieber oder eine Klappe (18) oder eine Blende aufweist. - Abgasanlage nach Anspruch 6 oder 7,
dadurch gekennzeichnet, dass das Steuerglied (17) zwischen oder mittig zwischen den Enden des Übertragungsrohrs (16) angeordnet ist. - Abgasanlage nach einem der Ansprüche 5 bis 6,
dadurch gekennzeichnet, dass die beiden Abgasstränge (3, 4) über das Übertragungsrohr (16) miteinander kommunizieren. - Abgasanlage nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass die Schallübertragungseinrichtung (14) so ausgebildet ist, dass sie unabhängig von ihrem Schaltzustand sowohl in dem einen Abgasstrang (3, 4) als auch im anderen Abgasstrang (3, 4) keinen oder im wesentlichen keinen Druckverlust erzeugt. - Abgasanlage nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass die Schallübertragungseinrichtung (14) stromauf der ersten Schalldämpferanordnung (11) und stromauf der zweiten Schalldämpferanordnung (12) angeordnet ist. - Abgasanlage nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, dass die Steuereinrichtung (15) die Schallübertragungseinrichtung (14) in Abhängigkeit der Drehzahl und/oder Last der Brennkraftmaschine (1), insbesondere kennfeldmäßig, betätigt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244021 | 2002-09-21 | ||
DE10244021A DE10244021A1 (de) | 2002-09-21 | 2002-09-21 | Abgasanlage für eine Brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1400666A1 true EP1400666A1 (de) | 2004-03-24 |
EP1400666B1 EP1400666B1 (de) | 2004-10-20 |
Family
ID=31896278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03015082A Expired - Lifetime EP1400666B1 (de) | 2002-09-21 | 2003-07-03 | Abgasanlage für eine Brennkraftmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1400666B1 (de) |
DE (2) | DE10244021A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2000643A1 (de) | 2007-06-06 | 2008-12-10 | J. Eberspächer GmbH Co. KG | Abgasanlage |
EP2287452A1 (de) * | 2009-07-06 | 2011-02-23 | Dr. Ing. h.c. F. Porsche AG | Abgasanlage einer Brennkraftmaschine |
EP3061932A1 (de) * | 2015-02-25 | 2016-08-31 | Honda Motor Co., Ltd. | Abgasvorrichtung eines motorrads |
DE102015211460A1 (de) * | 2015-06-22 | 2016-12-22 | Bayerische Motoren Werke Aktiengesellschaft | Abgasanlage |
US20170298802A1 (en) * | 2016-04-14 | 2017-10-19 | Hyundai Motor Company | Structure of exhaust pipe |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE102010008277B4 (de) | 2010-02-17 | 2023-10-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Abgasanlage einer Brennkraftmaschine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE721228C (de) * | 1940-03-21 | 1942-05-29 | Versuchsanstalt Fuer Luftfahrt | Schalldaempfungsanlage fuer Flugmotore |
GB2161215A (en) * | 1984-07-05 | 1986-01-08 | Shelburne Inc | Exhaust systems for internal combustion engines |
US4926635A (en) * | 1987-06-08 | 1990-05-22 | Nissan Motor Co., Ltd. | Exhaust system for multi-cylinder engine |
US5144799A (en) * | 1991-07-18 | 1992-09-08 | Barth Randolph S | Crossfire calibrated exhaust system |
US6209318B1 (en) * | 1998-09-03 | 2001-04-03 | Porsche Aktiengesellschaft | Exhaust gas system of a multi-cylinder internal-combustion engine |
DE20206155U1 (de) * | 2002-04-19 | 2002-08-01 | Audi Ag, 85057 Ingolstadt | Klappengesteuerte Abgasanlage zur Leistungs- und Drehmomentensteigerung |
-
2002
- 2002-09-21 DE DE10244021A patent/DE10244021A1/de not_active Withdrawn
-
2003
- 2003-07-03 EP EP03015082A patent/EP1400666B1/de not_active Expired - Lifetime
- 2003-07-03 DE DE50300120T patent/DE50300120D1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE721228C (de) * | 1940-03-21 | 1942-05-29 | Versuchsanstalt Fuer Luftfahrt | Schalldaempfungsanlage fuer Flugmotore |
GB2161215A (en) * | 1984-07-05 | 1986-01-08 | Shelburne Inc | Exhaust systems for internal combustion engines |
US4926635A (en) * | 1987-06-08 | 1990-05-22 | Nissan Motor Co., Ltd. | Exhaust system for multi-cylinder engine |
US5144799A (en) * | 1991-07-18 | 1992-09-08 | Barth Randolph S | Crossfire calibrated exhaust system |
US6209318B1 (en) * | 1998-09-03 | 2001-04-03 | Porsche Aktiengesellschaft | Exhaust gas system of a multi-cylinder internal-combustion engine |
DE20206155U1 (de) * | 2002-04-19 | 2002-08-01 | Audi Ag, 85057 Ingolstadt | Klappengesteuerte Abgasanlage zur Leistungs- und Drehmomentensteigerung |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2000643A1 (de) | 2007-06-06 | 2008-12-10 | J. Eberspächer GmbH Co. KG | Abgasanlage |
DE102007026812A1 (de) | 2007-06-06 | 2008-12-11 | J. Eberspächer GmbH & Co. KG | Abgasanlage |
US7703574B2 (en) | 2007-06-06 | 2010-04-27 | J. Eberspächer GmbH & Co. KG | Exhaust system |
EP2287452A1 (de) * | 2009-07-06 | 2011-02-23 | Dr. Ing. h.c. F. Porsche AG | Abgasanlage einer Brennkraftmaschine |
US8826651B2 (en) | 2009-07-06 | 2014-09-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Exhaust system for an internal combustion engine |
EP3061932A1 (de) * | 2015-02-25 | 2016-08-31 | Honda Motor Co., Ltd. | Abgasvorrichtung eines motorrads |
DE102015211460A1 (de) * | 2015-06-22 | 2016-12-22 | Bayerische Motoren Werke Aktiengesellschaft | Abgasanlage |
US10746065B2 (en) | 2015-06-22 | 2020-08-18 | Bayerische Motoren Werke Aktiegesellschaft | Exhaust-gas system |
US20170298802A1 (en) * | 2016-04-14 | 2017-10-19 | Hyundai Motor Company | Structure of exhaust pipe |
Also Published As
Publication number | Publication date |
---|---|
DE50300120D1 (de) | 2004-11-25 |
DE10244021A1 (de) | 2004-04-01 |
EP1400666B1 (de) | 2004-10-20 |
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