EP0077230A1 - Einrichtung zur Gasströmungsmodulation im Abgasschalldämpfer von Brennkraftmaschinen - Google Patents
Einrichtung zur Gasströmungsmodulation im Abgasschalldämpfer von Brennkraftmaschinen Download PDFInfo
- Publication number
- EP0077230A1 EP0077230A1 EP82401704A EP82401704A EP0077230A1 EP 0077230 A1 EP0077230 A1 EP 0077230A1 EP 82401704 A EP82401704 A EP 82401704A EP 82401704 A EP82401704 A EP 82401704A EP 0077230 A1 EP0077230 A1 EP 0077230A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resonator
- tube
- orifice
- valve
- silencer
- 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
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
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/161—Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers
- F01N1/163—Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers by means of valves
-
- 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
-
- 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/15—Plurality of resonance or dead chambers
- F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
Definitions
- the object of the present invention is to remedy these drawbacks by making it possible to modify the acoustic diagram of the silencer as a function of the engine speed.
- This invention indeed relates to a device for modulating the gas flow inside an exhaust silencer comprising, in a closed envelope, at least two perforated tubes traversed in series by the exhaust gas and an open resonator, which comprises in the resonator an orifice provided with a valve for adjusting its passage section, which is controlled by the flow of exhaust gas, that is to say by the engine speed.
- the valve adjusts the passage section of an orifice for placing the resonator in communication with a chamber of the silencer.
- the flow of gas leaving the resonator and entering the muffler chamber is thus automatically modified according to the flow of exhaust gas. It is all the more important that the gas flow is important, that is to say that the engine speed is high.
- the valve control can be obtained from various parameters of the exhaust gas flow, for example from the pressure or the temperature inside the resonator or from the speed of the silencer output flow.
- the valve adjusts an orifice for placing the resonator in communication with an inlet or pressure tapping tube, as a function of the outlet speed of the exhaust flow.
- the muffler shown is of the resonator type and comprises, consequently, an envelope 1 closed at each of its ends by a cup 2 and divided by a number of internal cups 3 into a number of chambers, for example chambers 4, 5 and 6 represented.
- Several tubes 8, 9 and 10 are mounted parallel to each other in the casing 1 and communicate with each other both by their perforations and by chambers such as chamber 5 into which two of them open.
- the chamber 6 also communicates with the chamber 5 via a pressure-taking tube 12 and thus constitutes a resonator.
- a flexible valve 16 is fixed to the partition 3 in line with the orifice 14 and tends at all times to apply on the edge of this orifice, so to shut it off.
- the valve 16 opens gradually. It then clears a passage whose cross section depends on the pressure inside the resonator 6.
- the movement of the valve 16 and the variation in section of the orifice 14 modify the operation of the resonator and adapt the acoustic attenuation obtained to the flow of gas flowing, that is to say to the engine speed.
- the slowing of the flow caused by the reduction in section of the orifice 14 or even the closing of this orifice eliminates any phenomenon of aspiration in the inlet tube 8 towards the motor and, consequently, reduces considerably the risk of fuel entering the muffler.
- the valve for adjusting the section of the orifice 14 can be controlled by another parameter of the flow of exhaust gas.
- the silencer may include a guided valve 18 carried by a rod 20 which passes through the orifice 14 and is integral with an expandable strip 22 sensitive to the temperature prevailing in the resonator 6.
- the strip expansion 22 is preferably supported on the closing cup 2 of the silencer, so that during expansion it pushes the rod 20 di rection of the chamber 5 and separates the valve 18 from the orifice 14.
- the position of the guided valve 18 relative to the partition 3 determines the area of the fluid passage section through the orifice 14 and depends on the expansion of the strip 22 which depends on the engine speed, since the variation of the gas temperature in the resonator is proportional to the variation of this regime.
- the outlet 14 of the resonator 6 is adjusted by means of a shutter of the butterfly type 24 pivoting about an axis 25 and controlled by the flow of gas in the outlet tube 10 of the silencer.
- the butterfly 24 is connected, by means of a link 26 articulated at its two ends, to a sliding rod 28 fixed to the membrane 30 of a manometric capsule.
- a tube 32 of small diameter connects the manometric capsule to the outlet tube of the silencer, so that the membrane 30 is subjected to the difference between the pressures prevailing in the resonator and in the thin tube 32.
- the gas flow s flowing through the outlet tube 10 creates a vacuum in the tube 32 which is proportional to the flow rate inside the tube 10, so that the position of the membrane 30 varies with the flow of exhaust gas inside the silencer and in particular in the outlet tube 10, that is to say with the engine speed.
- the tube 10 comprises near its outlet end a constriction 34 constituted by a local deformation of its wall or internal boss 35 and the narrow plunger tube 32 opens into this constriction.
- the exhaust gases exiting through the tube 10 are thus accelerated by the throttle 34, so that they create an increased vacuum in the tube 32 and facilitate try the action of the membrane 30 on the butterfly 24.
- the outlet port 14 of the resonator has a passage section which varies with the engine speed.
- the throttle valve 24 gradually opens this orifice under the action of the vacuum created in the tube 32, that is to say as the flow of gas flowing through the tube 10 increases.
- the butterfly valve 24 tends to close the orifice 14.
- the orifice 14 can be an orifice for communicating the chamber of the resonator 6 with the chamber 5, but it can also, according to an alternative embodiment shown in FIG. 3, allow the chamber of the resonator 6 with an intermediate chamber 36, a tube 38 preferably being mounted in the orifice 14 and opening into the chamber 36 which communicates with the chamber 5 through an orifice 40 and thus constitutes a second open resonator.
- the flow modulation device modifies the acoustic attenuation characteristics of the muffler as a function of the engine speed.
- An orifice 42 is then preferably provided in the pressure take-off tube 12 of the resonator-6 inside the latter.
- a flap 44 pivoting on an axis 45 can move in front of the tube 12 and more or less completely close the orifice 42 under the action of a pressure capsule 46 to the membrane 48 of which it is connected by a sliding rod 50.
- the membrane 48 is subjected to the vacuum prevailing in a narrow tube 52 which opens into the exhaust gas outlet tube 10, in line with a throttle 54.
- the throttle 54 is preferably produced by a local deformation 55 of the wall of the tube 10.
- this constriction 54 causes an acceleration of the output flow of the silencer and, consequently, increases the vacuum in the tube 52 and the deformation of the membrane 48.
- the flap 44 gradually releases the orifice 42 as the speed of the gases in the tube 10 increases and, on the contrary, gradually closes this orifice when this speed decreases, that is to say that the engine speed is reduced.
- the opening of the orifice 42 has the same effect as a shortening of the length of the pressure tapping tube 12 of the resonator and, consequently, modifies the frequency of the gas inside this resonator and allows the silencer to '' be constantly adapted to the engine speed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8119304 | 1981-10-14 | ||
FR8119304A FR2514412A1 (fr) | 1981-10-14 | 1981-10-14 | Dispositif de modulation de l'ecoulement des gaz dans un silencieux d'echappement de moteur a combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0077230A1 true EP0077230A1 (de) | 1983-04-20 |
EP0077230B1 EP0077230B1 (de) | 1985-01-09 |
Family
ID=9263025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82401704A Expired EP0077230B1 (de) | 1981-10-14 | 1982-09-20 | Einrichtung zur Gasströmungsmodulation im Abgasschalldämpfer von Brennkraftmaschinen |
Country Status (6)
Country | Link |
---|---|
US (1) | US4484659A (de) |
EP (1) | EP0077230B1 (de) |
JP (1) | JPS58126414A (de) |
DE (1) | DE3261850D1 (de) |
ES (1) | ES516782A0 (de) |
FR (1) | FR2514412A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0111336A2 (de) * | 1982-12-09 | 1984-06-20 | Nippondenso Co., Ltd. | Resonanzkammer für Brennkraftmaschine |
EP0119634A2 (de) * | 1983-03-22 | 1984-09-26 | Nippondenso Co., Ltd. | Resonatorkammer für Brennkraftmaschinen |
DE3736573A1 (de) * | 1986-11-21 | 1988-06-01 | Nihon Radiator Co | Auspufftopf fuer kraftfahrzeuge |
EP0328056A2 (de) * | 1988-02-08 | 1989-08-16 | Sango Co., Ltd. | Schalldämpfer |
FR2649756A1 (fr) * | 1989-07-12 | 1991-01-18 | Peugeot | Dispositif d'echappement perfectionne pour un moteur muni d'un turbocompresseur, notamment pour vehicule automobile |
AT399022B (de) * | 1985-04-15 | 1995-03-27 | Bombardier Rotax Gmbh | Zweitakt-brennkraftmaschine |
FR2737537A1 (fr) * | 1995-07-31 | 1997-02-07 | Ecia Equip Composants Ind Auto | Dispositif de commande de l'ecoulement des gaz d'echappement d'un moteur a combustion interne, notamment de vehicule automobile |
KR101135410B1 (ko) * | 2007-10-10 | 2012-04-17 | 퀄컴 인코포레이티드 | 이중 대역 무선 주파수 송신기 |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59520U (ja) * | 1982-06-25 | 1984-01-05 | 三菱自動車工業株式会社 | 消音装置 |
DE3335427A1 (de) * | 1982-10-09 | 1984-04-12 | Mitsubishi Denki K.K., Tokyo | Motor-vakuumpumpengruppe |
DE3419442A1 (de) * | 1983-05-25 | 1984-12-20 | Kogata Gasu Reibo-gijutsu Kenkyu Kumiai, Tokio/Tokyo | Waermetauscher |
SE447290B (sv) * | 1985-03-19 | 1986-11-03 | Volvo Ab | Anordning for dempning av avgasljud medelst en av avgasflekt beroende reglerventil |
US4866933A (en) * | 1988-09-21 | 1989-09-19 | Whau Chih Kao | Exhaust silencer |
JPH0714450Y2 (ja) * | 1989-02-10 | 1995-04-10 | 株式会社イナックス | シンク及びカウンターの取付構造 |
US5112198A (en) * | 1991-02-08 | 1992-05-12 | General Motors Corporation | Refrigerant compressor having variable restriction pressure pulsation attenuator |
US5248859A (en) * | 1991-03-25 | 1993-09-28 | Alexander Borla | Collector/muffler/catalytic converter exhaust systems for evacuating internal combustion engine cylinders |
US5801343A (en) * | 1993-11-09 | 1998-09-01 | Futaba Industrial Co., Ltd. | Muffler for internal combustion engine |
US5614699A (en) * | 1994-05-09 | 1997-03-25 | Nissan Motor Co., Ltd. | Automobile exhaust noise suppressor |
JP3379254B2 (ja) * | 1994-12-26 | 2003-02-24 | 日産自動車株式会社 | 排気消音装置 |
US5712454A (en) * | 1995-01-27 | 1998-01-27 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust system in internal combustion engine |
DE19540716C1 (de) * | 1995-11-02 | 1997-04-17 | Gillet Heinrich Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
FR2744490B1 (fr) * | 1996-02-01 | 1998-04-24 | Ecia Equip Composants Ind Auto | Dispositif de commande de l'ecoulement des gaz d'echappement dans une ligne d'echappement, notamment de vehicule automobile |
JP3214338B2 (ja) * | 1996-03-06 | 2001-10-02 | 日産自動車株式会社 | 自動車用排気消音装置 |
DE19729666C2 (de) * | 1996-07-20 | 2002-01-17 | Gillet Heinrich Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
EP1030039B1 (de) * | 1999-02-18 | 2002-07-10 | Hyundai Motor Company | Semiaktiver Schalldämpfer für Brennkraftmaschine |
DE19935711C1 (de) * | 1999-07-29 | 2000-12-28 | Zeuna Staerker Kg | Schalldämpfer mit variabler Dämpfungscharakteristik |
US6470998B1 (en) | 1999-10-26 | 2002-10-29 | James E. White | Modular muffler with end plate adaptors and spark arresters |
JP3342461B2 (ja) * | 2000-03-01 | 2002-11-11 | 本田技研工業株式会社 | 排気消音装置 |
JP2002089257A (ja) * | 2000-09-11 | 2002-03-27 | Calsonic Kansei Corp | 制御マフラ用バルブおよび制御マフラ用バルブの弁体組み付け方法 |
US6390132B1 (en) | 2000-12-07 | 2002-05-21 | Caterpillar Inc. | Fluid stream pulse damper |
US6732510B2 (en) | 2002-02-06 | 2004-05-11 | Arvin Technologies, Inc. | Exhaust processor with variable tuning system |
JP3738000B2 (ja) * | 2002-10-07 | 2006-01-25 | 本田技研工業株式会社 | 消音器用バルブ装置 |
US6899199B2 (en) * | 2002-10-24 | 2005-05-31 | Barnes Group Inc. | Flapper finger valve assembly |
US6915877B2 (en) | 2003-01-13 | 2005-07-12 | Garabed Khayalian | Muffler device |
DE10311201A1 (de) * | 2003-03-14 | 2004-09-30 | Heinrich Gillet Gmbh | Schalldämpfer mit variabler Dämpfungscharakteristik |
US20050155816A1 (en) * | 2004-01-16 | 2005-07-21 | Alcini William V. | Dynamic exhaust system for advanced internal combustion engines |
US7575096B2 (en) * | 2005-09-21 | 2009-08-18 | Emcon Technologies Llc | Pressed assembly for passive valve installation |
US20070107981A1 (en) * | 2005-10-07 | 2007-05-17 | Sicotte Jason M | Exhaust silencer |
US20090229913A1 (en) * | 2008-02-08 | 2009-09-17 | Waldron's Antique Exhaust | Dual Mode Exhaust Muffler |
CN102705043B (zh) * | 2012-06-05 | 2014-12-10 | 徐州重型机械有限公司 | 一种起重机及其排气系统的消声器 |
KR101316133B1 (ko) * | 2012-08-10 | 2013-10-08 | 현대자동차주식회사 | 차량용 소음기 |
US9394864B2 (en) * | 2014-06-11 | 2016-07-19 | Ford Global Technologies, Llc | Multi-frequency quarter-wave resonator for an internal combustion engine vehicle |
US9695719B2 (en) * | 2014-09-24 | 2017-07-04 | Kawasaki Jukogyo Kabushiki Kaisha | Exhaust muffler device for combustion engine |
US10302052B2 (en) | 2016-11-16 | 2019-05-28 | Ford Global Technologies, Llc | Vacuum actuated multi-frequency quarter-wave resonator for an internal combustion engine |
US11149602B2 (en) * | 2018-05-22 | 2021-10-19 | Faurecia Emissions Control Technologies, Usa, Llc | Passive flap valve for vehicle exhaust system |
KR20210056793A (ko) * | 2019-11-11 | 2021-05-20 | 현대자동차주식회사 | 차량용 머플러 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1224205A (fr) * | 1959-02-03 | 1960-06-22 | Normande D Emboutissage Soc | Dispositif silencieux pour écoulement pulsatoire des gaz |
US3620330A (en) * | 1969-04-14 | 1971-11-16 | Oldberg Mfg Co | Muffler construction and method of selectively modifying its sound-attenuating characteristics |
US3642095A (en) * | 1968-03-22 | 1972-02-15 | Fujii Koygo Kk | Muffler |
FR2131431A5 (de) * | 1972-02-14 | 1972-11-10 | Motor Condensator Walter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3090677A (en) * | 1961-03-09 | 1963-05-21 | Arvin Ind Inc | Catalytic converter |
US3783590A (en) * | 1970-07-09 | 1974-01-08 | A Allen | Filter-silencer for pneumatic devices |
-
1981
- 1981-10-14 FR FR8119304A patent/FR2514412A1/fr active Granted
-
1982
- 1982-09-20 EP EP82401704A patent/EP0077230B1/de not_active Expired
- 1982-09-20 DE DE8282401704T patent/DE3261850D1/de not_active Expired
- 1982-09-24 US US06/422,919 patent/US4484659A/en not_active Expired - Lifetime
- 1982-10-07 ES ES516782A patent/ES516782A0/es active Granted
- 1982-10-13 JP JP57179688A patent/JPS58126414A/ja active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1224205A (fr) * | 1959-02-03 | 1960-06-22 | Normande D Emboutissage Soc | Dispositif silencieux pour écoulement pulsatoire des gaz |
US3642095A (en) * | 1968-03-22 | 1972-02-15 | Fujii Koygo Kk | Muffler |
US3620330A (en) * | 1969-04-14 | 1971-11-16 | Oldberg Mfg Co | Muffler construction and method of selectively modifying its sound-attenuating characteristics |
FR2131431A5 (de) * | 1972-02-14 | 1972-11-10 | Motor Condensator Walter |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0111336A2 (de) * | 1982-12-09 | 1984-06-20 | Nippondenso Co., Ltd. | Resonanzkammer für Brennkraftmaschine |
EP0111336A3 (en) * | 1982-12-09 | 1985-05-29 | Nippondenso Co., Ltd. | Resonator for internal combustion engines |
EP0119634A2 (de) * | 1983-03-22 | 1984-09-26 | Nippondenso Co., Ltd. | Resonatorkammer für Brennkraftmaschinen |
EP0119634A3 (en) * | 1983-03-22 | 1985-05-22 | Nippondenso Co., Ltd. | Resonator for internal combustion engines |
AT399022B (de) * | 1985-04-15 | 1995-03-27 | Bombardier Rotax Gmbh | Zweitakt-brennkraftmaschine |
DE3736573A1 (de) * | 1986-11-21 | 1988-06-01 | Nihon Radiator Co | Auspufftopf fuer kraftfahrzeuge |
EP0328056A2 (de) * | 1988-02-08 | 1989-08-16 | Sango Co., Ltd. | Schalldämpfer |
EP0328056A3 (en) * | 1988-02-08 | 1990-02-28 | Sango Co., Ltd. | Muffler |
US4971166A (en) * | 1988-02-08 | 1990-11-20 | Sango Co., Ltd. | Muffler |
FR2649756A1 (fr) * | 1989-07-12 | 1991-01-18 | Peugeot | Dispositif d'echappement perfectionne pour un moteur muni d'un turbocompresseur, notamment pour vehicule automobile |
FR2737537A1 (fr) * | 1995-07-31 | 1997-02-07 | Ecia Equip Composants Ind Auto | Dispositif de commande de l'ecoulement des gaz d'echappement d'un moteur a combustion interne, notamment de vehicule automobile |
KR101135410B1 (ko) * | 2007-10-10 | 2012-04-17 | 퀄컴 인코포레이티드 | 이중 대역 무선 주파수 송신기 |
Also Published As
Publication number | Publication date |
---|---|
ES8307037A1 (es) | 1983-06-16 |
US4484659A (en) | 1984-11-27 |
ES516782A0 (es) | 1983-06-16 |
FR2514412A1 (fr) | 1983-04-15 |
FR2514412B1 (de) | 1984-01-13 |
JPS58126414A (ja) | 1983-07-27 |
DE3261850D1 (en) | 1985-02-21 |
JPS6323366B2 (de) | 1988-05-16 |
EP0077230B1 (de) | 1985-01-09 |
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