EP0771939B1 - Schalldämpfer mit variabler Dämpfungscharakteristik - Google Patents
Schalldämpfer mit variabler Dämpfungscharakteristik Download PDFInfo
- Publication number
- EP0771939B1 EP0771939B1 EP96116731A EP96116731A EP0771939B1 EP 0771939 B1 EP0771939 B1 EP 0771939B1 EP 96116731 A EP96116731 A EP 96116731A EP 96116731 A EP96116731 A EP 96116731A EP 0771939 B1 EP0771939 B1 EP 0771939B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- piston rod
- silencer according
- valve
- closing element
- 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.)
- Expired - Lifetime
Links
Images
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
- F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
-
- 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
Definitions
- the invention relates to variable silencers Damping characteristic for pulsating gases according to the Preamble of claim 1.
- Such a silencer is known from DE-U 94 05 771.
- This silencer is used for opening and Closing a tube carrying the pulsating exhaust gases a valve plate that is attached to a piston rod, which performs a linear movement.
- the piston rod itself is attached to the membrane of a pressure cell.
- the Overpressure side of the membrane is the pressure inside the Muffler supplied, preferably via an in the piston rod integrated pressure line.
- a compression spring supports the membrane against excess pressure.
- the low pressure side the membrane stands over a housing opening with the Atmosphere in connection.
- This arrangement is chosen so that the valve plate in The gas pipe closes the idle state.
- the Hibernation corresponds to a slight overpressure in the Silencer against atmospheric pressure. If the Internal pressure in the silencer due to an increase in the Gas flow, so moves the force generated by the overpressure the membrane against the sum of the forces of the support spring and Atmospheric pressure and the valve disc have been there so far closed exhaust pipe free.
- the present invention has for its object a Mufflers of the type mentioned above to that effect improve that a variety of influencing factors can be taken into account, however, the simple Basic principle, especially the absence of an external one Control unit, and the use of a simple, reliable mechanics, are retained.
- the solution according to the invention provides for operating the Closing element on the piston rod an actuation box before, the multiple membranes, multiple chambers and multiple Has pressure connections.
- the number of Chambers and thus the control pressures that can be taken into account be of any size, although in practice one Restriction is inevitable that the stroke, the one Can run membrane maximum, is mechanically limited.
- the essential advantage of the present invention is based on the fact that the pressure side of one, preferably the first membrane the total pressure, the low pressure side of this Membrane fed the static pressure of the muffler becomes. This compensates for the different ones Flow resistances of the different types of silencers and possibly downstream damper and the support spring only needs to be matched to the flow rate be on the valve closing element the gas pipe should open or close.
- the present invention the possibility of a chamber of Actuating box through a housing bore with the atmosphere to connect. In this way for example, the higher the altitude Decreasing air pressure in the control of the sea level Include valve closing element.
- the effect of a certain pressure value on the opening and Closing characteristics of the valve closing element can by changing the corresponding membrane area vary.
- Valve closing element can have different effects in terms of acoustic properties and Achieve gas flow inside the silencer.
- this is Valve closing element a plate, as it comes from the beginning mentioned DE-U 94 05 771 is known, with the help of which End of a gas-carrying pipe can be closed.
- the piston rod can also two such valve plates can be attached. These can different diameters and / or different Have orientation. In the latter case, they offer the Possibility of a first gas-carrying pipe and in the idle state a second gas-carrying pipe in the active state close or release.
- valve closing element is a hollow cylinder that moves in the exhaust pipe to perforated pipe areas or branching there Pipes, for example the neck of a Helmholtz resonator, to lock or release.
- a third alternative embodiment also uses a cylinder, but with the bottom closed, so that too the gas flow through the tube in which the cylinder is moved, can be cordoned off overall.
- Fig. 1 shows a silencer with switchable Damping characteristic according to the state of the art.
- the Muffler has a housing 2, the inside of which With the help of two partitions 22, 24 divided into three chambers is.
- An exhaust gas feed pipe 3.1 leads from the gas inlet 1 the housing 2 into, an exhaust pipe 3.2 leads on Gas outlet 7 out of the housing 2.
- the end of The supply pipe 3.1 is by means of a valve plate 5 locked.
- valve plate 5 is seated on a piston rod 13 which in turn is part of a pressure can 10.
- the exhaust gas flows through the branch pipe 3.3 in the first expansion chamber 21 in the housing 2, by a Another gas pipe 3.4 in the third expansion chamber 25, of there through perforations in the partition 24 in the middle Expansion chamber 23, where it is in the discharge pipe 3.2 enters to leave the housing 2 at the gas outlet 7.
- Fig. 2 shows in an enlarged, half-cut Representation of an actuation box 10 with four chambers 14.1, 14.2, 14.3, 14.4, divided by three membranes 11.1, 11.2, 11.3, which in turn each have a support spring 12.1, 12.2, 12.3 are supported.
- Each of the four chambers 14.1 ... 14.4 has its own pressure connection 15.1, 15.2, 15.3, 15.4.
- a piston rod 13 is with the foremost membrane 11.1 connected.
- the piston rod 13 is drilled twice. These holes lead to pressure connections 15.1, 15.2 in front of and behind the first membrane 11.1.
- the one pressure line 6.1 opens into Head of the piston rod 13 and takes up the total gas pressure.
- the other pressure line 6.2 opens laterally in the Piston rod 13 with a sufficient distance from the head of the Piston rod 13 or to the valve plate 5.1 and takes the static pressure inside the silencer.
- the first membrane 11.1 acts Difference of these two pressures, which is the square of the Exhaust gas flow rate is proportional.
- the individual flow resistance of each Muffler is compensated.
- the strength of the support spring 12.1 can therefore only be used for Exhaust gas flow rate can be adjusted at the valve plate 5.1 should open.
- the third chamber 14.3 can have a negative pressure fed from the intake tract of an internal combustion engine to be with the throttle valve closed, d. H. in the Thrust operation, a certain position of the valve plate 5.1 to force.
- the fourth chamber 14.4 can via its pressure connection 15.4 for example in connection with the free atmosphere stay around in this way with increasing altitude decreasing atmospheric pressure in the Include tax characteristics.
- actuating box 10 basically with further chambers, pressure connections, membranes and Support springs can be run if necessary should and the membranes for the strokes then required be dimensioned.
- Fig. 3 shows an embodiment of an actuation box 10 with three chambers 14.1 ... 14.3 and two membranes 11.1, 11.2.
- the two foremost chambers 14.1, 14.2 are like already explained by the piston rod 13 integrated pressure lines 6.1, 6.2 supplied with pressure.
- On the third chamber 14.3 is an external pressure line 6.3 connected.
- Fig. 5 shows a second application example.
- a valve disk 5.1 for opening and Closing the gas supply pipe 3.1 provided.
- the gas pipe 3.1 is with a perforated area 2.6 provided by the hollow cylinder 5.4 more or less closed, so the acoustics of the silencer.
- Fig. 6 shows a third application example.
- the Piston rod 13 are two valve plates 5.1, 5.2 with different diameters attached. This correspond to two concentric tubes 3.1, 3.4, the second valve plate 5.2 located inside the second tube 3.4 can move until the first valve plate 5.1 closes the outer gas-carrying pipe 3.1.
- valve plates 5.1, 5.2 also can be dimensioned and positioned so that the first valve plate 5.1 inside the first tube 3.1 can be moved while the second valve plate 5.2 closes or releases the end of the second gas pipe 3.4.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
- Fig. 1
- einen Abgasschalldämpfer gemäß dem Stand der Technik mit einem Ventilteller zum Öffnen und Verschließen eines abgasführenden Rohres, betätigt durch eine Druckdose,
- Fig. 2
- eine Betätigungsdose mit vier Kammern und drei Membranen,
- Fig. 3
- eine Betätigungsdose mit drei Kammern und zwei Membranen,
- Fig. 4
- ein Anwendungsbeispiel für ein Schließelement mit zwei Ventiltellern,
- Fig.5
- ein Anwendungsbeispiel für ein Schließelement mit Hohlzylinder und Ventilteller und
- Fig.6
- ein Anwendungsbeispiel für ein Schließelement mit zwei Ventiltellern mit unterschiedlichem Durchmesser.
Claims (10)
- Schalldämpfer mit variabler Dämpfungscharakteristik für pulsierende Gase, umfassendein Gehäuse (2),ein Gaszuleitungsrohr (3.1) als Gaseinlaß (1) in das Gehäuse (2),weitere im Gehäuse (2) integrierte Rohre (3.2, 3.3, 3.4),eine Betätigungsdose (10), die ein Ventilschließelement (5) über eine Kolbenstange (13) betätigt, miteiner Membran (11.1) mit einer Überdruckseite und einer Niederdruckseite,und einer Stützfeder (12.1)die Überdruckseite der Membran (11.1) ist über eine erste Druckleitung (6.1) und einen ersten Druckanschluss (15.1) mit dem Gasgesamtdruck im Gaszuleitungsrohr (3.1) beaufschlagt,die Niederdruckseite der Membran (11.1) ist über einen zweiten Druckanschluss (15.2) mit einem statischen Gasdruck beaufschlagt,die Betätigungsdose (10) besitzt wenigstens zwei Membranen (11.1, 11.2, 11.3) und eine entsprechende Zahl getrennter Kammern (14.1, 14.2, 14.3, 14.4) zwischen den Membranen bzw. zwischen den Membranen und dem Gehäuse (10),jede Membran (11.1, 11.2, 11.3) ist durch eine Feder (12.1, 12.2, 12.3) abgestützt,jede weitere Kammer (14.3, 14.4) besitzt ebenfalls einen Druckanschluss (15.3, 15.4),eine zweite Druckleitung (6.2) leitet den statischen Gasdruck im Gaszuleitungsrohr (3.1) zu dem zweiten Druckanschluss (15.2).
- Schalldämpfer nach Anspruch 1, gekennzeichnet durch die Merkmale:beide Druckleitungen (6.1, 6.2) sind in die Kolbenstange (13) integriert,die erste Druckleitung (6.1) mündet im Kopf der Kolbenstange (13),die zweite Druckleitung (6.2) mündet zwischen dem Kopf der Kolbenstange (13) und dem Ventilschließelement (5) seitlich an der Kolbenstange (13),der Kopf der Kolbenstange (13) ragt in das Gaszuleitungsrohr (3.1).
- Schalldämpfer nach Anspruch 1 oder 2, gekennzeichnet durch die Merkmale:eine dritte Druckleitung (6.3) leitet einen Unterdruck in eine dritte Kammer (14.3),der Unterdruck stammt aus dem Ansaugtrakt eines Verbrennungsmotors.
- Schalldämpfer nach einem der Ansprüche 1 bis 3,
gekennzeichnet durch das Merkmal:eine Kammer (14.3) steht mit der Atmosphäre in Verbindung. - Schalldämpfer nach einem der Ansprüche 1 bis 4,
gekennzeichnet durch das Merkmal:wenigstens eine Membran besitzt eine abweichende Fläche. - Schalldämpfer nach einem der Ansprüche 1 bis 5, gekennzeichnet durch das Merkmal:das Ventilschließelement (5) ist als wenigstens ein Ventilteller (5.1, 5.2) ausgebildet.
- Schalldämpfer nach Anspruch 6, gekennzeichnet durch die Merkmale:auf der Kolbenstange (13) sind wenigstens zwei Ventilteller (5.1, 5.2) montiert,die Durchmesser der Ventilteller (5.1, 5.2) weichen voneinander ab.
- Schalldämpfer nach Anspruch 6, gekennzeichnet durch die Merkmale:auf der Kolbenstange (13) sind wenigstens zwei Ventilteller (5.1, 5.2) montiert,die Ventilteller (5.1, 5.2) sind spiegelbildlich, zueinander orientiert.
- Schalldämpfer nach einem der Ansprüche 1 bis 5, gekennzeichnet durch das Merkmal:das Ventilschließelement (5) ist als Hohlzylinder (5.4) ausgebildet.
- Schalldämpfer nach einem der Ansprüche 1 bis 5,
gekennzeichnet durch das Merkmal:das Ventilschließelement (5) ist als Zylinder mit geschlossenem Boden ausgebildet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19540716 | 1995-11-02 | ||
DE19540716A DE19540716C1 (de) | 1995-11-02 | 1995-11-02 | Schalldämpfer mit variabler Dämpfungscharakteristik |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0771939A1 EP0771939A1 (de) | 1997-05-07 |
EP0771939B1 true EP0771939B1 (de) | 2000-03-22 |
Family
ID=7776368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96116731A Expired - Lifetime EP0771939B1 (de) | 1995-11-02 | 1996-10-18 | Schalldämpfer mit variabler Dämpfungscharakteristik |
Country Status (4)
Country | Link |
---|---|
US (1) | US5821474A (de) |
EP (1) | EP0771939B1 (de) |
JP (1) | JPH09166010A (de) |
DE (2) | DE19540716C1 (de) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE517825C2 (sv) * | 1997-11-14 | 2002-07-23 | Volvo Car Corp | Anordning och förfarande vid ljuddämpande enhet samt användning av anordningen vid ett motorfordon |
JP4298835B2 (ja) * | 1999-01-22 | 2009-07-22 | 本田技研工業株式会社 | 自動二輪車の排気装置 |
DE19935711C1 (de) * | 1999-07-29 | 2000-12-28 | Zeuna Staerker Kg | Schalldämpfer mit variabler Dämpfungscharakteristik |
SE521329C2 (sv) * | 1999-09-06 | 2003-10-21 | Volvo Personvagnar Ab | Anordning och förfarande vid ljuddämpande enhet |
DE19947938B4 (de) * | 1999-10-06 | 2005-09-22 | Zeuna-Stärker GmbH & Co KG | Schalldämpfer mit variabler Dämpfungscharakteristik |
SE517794C2 (sv) | 1999-11-05 | 2002-07-16 | Erik Jonsson | Ljuddämpningsanordning |
DE10000464B4 (de) | 2000-01-07 | 2004-02-05 | Zeuna-Stärker GmbH & Co KG | Fluidisches Schaltelement |
DE10000463A1 (de) | 2000-01-07 | 2001-07-26 | Zeuna Staerker Kg | Fluidisches Schaltelement als Stoffstrom-Stellglied |
DE10020491A1 (de) * | 2000-04-26 | 2002-03-14 | Eberspaecher J Gmbh & Co | Schalldämpferanlage eines Kraftfahrzeuges mit variabler Dämpfungscharakteristik |
US6732510B2 (en) | 2002-02-06 | 2004-05-11 | Arvin Technologies, Inc. | Exhaust processor with variable tuning system |
US8079441B2 (en) * | 2002-09-08 | 2011-12-20 | Guobiao Zhang | Muffler |
CN1408990B (zh) * | 2002-09-08 | 2012-04-25 | 章国标 | 消声器 |
DE10311201A1 (de) * | 2003-03-14 | 2004-09-30 | Heinrich Gillet Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
DE10319212B4 (de) * | 2003-04-29 | 2010-02-11 | Heinrich Gillet Gmbh | Schalldämpfer mit variablen akustischen Eigenschaften |
US20050155816A1 (en) * | 2004-01-16 | 2005-07-21 | Alcini William V. | Dynamic exhaust system for advanced internal combustion engines |
GB2414274A (en) * | 2004-05-18 | 2005-11-23 | Richard Bushell | Dynamic exhaust system for vehicular i.c. engines |
US7870930B2 (en) * | 2005-09-02 | 2011-01-18 | Emcon Technologies Llc | Exhaust system with external helmholtz resonator and associated method |
US8468813B2 (en) * | 2007-03-16 | 2013-06-25 | Tenneco Automotive Operating Company Inc. | Snap-action valve for exhaust system |
US7434570B2 (en) | 2007-03-16 | 2008-10-14 | Tenneco Automotive Operating Company Inc. | Snap-action valve for exhaust system |
US7775322B2 (en) * | 2007-03-16 | 2010-08-17 | Tenneco Automotive Operating Company Inc. | Snap-action valve for exhaust system |
TWM321061U (en) * | 2007-03-22 | 2007-10-21 | Yi-Fan Peng | Exhaust back pressure apparatus for automobile and motorcycle engines |
WO2009014780A2 (en) * | 2007-04-26 | 2009-01-29 | Lord Corporation | Noise controlled turbine engine with aircraft engine adaptive noise control tubes |
DE102007026811A1 (de) * | 2007-06-06 | 2008-12-11 | J. Eberspächer GmbH & Co. KG | Schalldämpfer |
US20090229913A1 (en) * | 2008-02-08 | 2009-09-17 | Waldron's Antique Exhaust | Dual Mode Exhaust Muffler |
US8191572B2 (en) * | 2009-04-16 | 2012-06-05 | Tenneco Automotive Operating Company Inc. | Snap action valve with bumper pad |
US8381401B2 (en) * | 2009-04-16 | 2013-02-26 | Tenneco Automotive Operating Company Inc. | Method of installing rotatable flapper valve to an interior of a conduit |
US8353153B2 (en) * | 2010-02-25 | 2013-01-15 | Tenneco Automotive Operating Company Inc. | Snapper valve for hot end systems with burners |
US8657065B1 (en) | 2012-12-14 | 2014-02-25 | Tenneco Automotive Operating Company Inc. | Exhaust valve with resilient spring pad |
WO2014154226A1 (en) * | 2013-03-27 | 2014-10-02 | Volvo Truck Corporation | An exhaust gas pressure regulator |
JP5945018B1 (ja) * | 2015-01-30 | 2016-07-05 | 本田技研工業株式会社 | 排気マフラー |
EP3156664B1 (de) * | 2015-10-13 | 2020-09-16 | Alcatel Lucent | Verstellbare resonatoranordnung und verfahren zur reduzierung von geräuschemissionen in einem gasleitungssystem |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2072372A (en) * | 1934-02-23 | 1937-03-02 | Riethmiller Ruth | Exhaust system for automotive engines |
US3620330A (en) * | 1969-04-14 | 1971-11-16 | Oldberg Mfg Co | Muffler construction and method of selectively modifying its sound-attenuating characteristics |
FR2514412A1 (fr) * | 1981-10-14 | 1983-04-15 | Peugeot Cycles | Dispositif de modulation de l'ecoulement des gaz dans un silencieux d'echappement de moteur a combustion interne |
JPS62237175A (ja) * | 1986-04-07 | 1987-10-17 | Babcock Hitachi Kk | ボ−ル弁 |
US5003781A (en) * | 1988-05-23 | 1991-04-02 | Mazda Motor Corporation | Air supply and exhaust control systems for turbocharged internal combustion engines |
DE9405771U1 (de) * | 1994-04-07 | 1994-08-25 | Heinrich Gillet Gmbh & Co Kg, 67480 Edenkoben | Schalldämpfer mit umschaltbarer Dämpfungscharakteristik |
US5614699A (en) * | 1994-05-09 | 1997-03-25 | Nissan Motor Co., Ltd. | Automobile exhaust noise suppressor |
-
1995
- 1995-11-02 DE DE19540716A patent/DE19540716C1/de not_active Expired - Fee Related
-
1996
- 1996-10-18 EP EP96116731A patent/EP0771939B1/de not_active Expired - Lifetime
- 1996-10-18 DE DE59604751T patent/DE59604751D1/de not_active Expired - Fee Related
- 1996-10-25 US US08/738,059 patent/US5821474A/en not_active Expired - Fee Related
- 1996-10-30 JP JP8288695A patent/JPH09166010A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE19540716C1 (de) | 1997-04-17 |
JPH09166010A (ja) | 1997-06-24 |
DE59604751D1 (de) | 2000-04-27 |
US5821474A (en) | 1998-10-13 |
EP0771939A1 (de) | 1997-05-07 |
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