EP1477642A1 - Silencieux pour moteur a combustion interne - Google Patents

Silencieux pour moteur a combustion interne Download PDF

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Publication number
EP1477642A1
EP1477642A1 EP03705335A EP03705335A EP1477642A1 EP 1477642 A1 EP1477642 A1 EP 1477642A1 EP 03705335 A EP03705335 A EP 03705335A EP 03705335 A EP03705335 A EP 03705335A EP 1477642 A1 EP1477642 A1 EP 1477642A1
Authority
EP
European Patent Office
Prior art keywords
outlet pipe
muffler
exhaust gas
area
expanding chamber
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.)
Withdrawn
Application number
EP03705335A
Other languages
German (de)
English (en)
Other versions
EP1477642A4 (fr
Inventor
Masayuki Yawatayama Kojo Sango Co. Ltd. YOKOI
Fumihiko Yawatayama Kojo SANGO CO. Ltd. MIZUNO
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.)
Sango Co Ltd
Original Assignee
Sango Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sango Co Ltd filed Critical Sango Co Ltd
Publication of EP1477642A1 publication Critical patent/EP1477642A1/fr
Publication of EP1477642A4 publication Critical patent/EP1477642A4/fr
Withdrawn legal-status Critical Current

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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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • 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
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • 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
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
    • 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
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2470/02—Tubes being perforated
    • F01N2470/04—Tubes being perforated characterised by shape, disposition or dimensions of apertures
    • 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
    • F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • 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
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust

Definitions

  • the present invention relates to an international combustion engine silencer, or a muffler for internal combustion engines.
  • mufflers to be disposed on the exhaust line of an internal combustion engine are conventionally known ones having a U-turn structure in which exhaust gas is inverted once or more in the muffler.
  • a muffler having such a U-turn structure the muffler illustrated in FIG. 11, for instance, is disclosed in the Japanese Utility Model Unexamined Publication JP-U-61-194718.
  • the muffler as shown in FIG. 11, is provided within its housing 101, successively from the upstream side (left side in the drawing) onward, a first expanding chamber 102, a second expanding chamber 103, a third expanding chamber 104 and a resonator chamber 105 partitioned from one another.
  • the third expanding chamber 104 opens an inlet pipe 106 for introducing exhaust gas into the muffler, and the first expanding chamber 102 is provided with, opening into it, an outlet pipe 109 for discharging exhaust gas out of the muffler.
  • a conduit 107 to make possible communication between the two chambers 102 and 104.
  • a small hole 111 is provided in the inlet pipe 106, a small hole 112 in the outlet pipe 109 and a small hole 113 in the conduit 107, to enable part of exhaust gas to be discharged out of or let into the second expanding chamber 103, to cause elements of sound wave energy in exhaust gas to interfere with one another and thereby to reduce exhaust noise.
  • the open area ratios of the small holes 111, 112 and 113 should be increased while raising the open area ratios of the small holes would reduce the attenuating effect in the high revolution range of the engine.
  • the present invention is intended to provide a muffler capable of achieving a high attenuating effect without reducing the attenuating effect in the high revolution range of the engine.
  • the invention provides a muffler for internal combustion engines equipped with at least one expanding chamber formed within the muffler, an inlet pipe opening into the expanding chamber to introduce exhaust gas into the muffler, and an outlet pipe opening into the expanding chamber to introduce exhaust gas out of the muffler, in which exhaust gas discharged from an opening in the inlet pipe is inverted once or more and introduced into an opening in the outlet pipe, wherein in a contraflow area of the muffler where the flowing direction of exhaust gas flowing in the expanding chamber and the flowing direction of exhaust gas flowing in the outlet pipe are not the same, interference holes composed of a plurality of small holes communicating with the expanding chamber are provided in the outlet pipe and the total aperture area of the interference holes is not less than 1% but not more than 5% of the surface area of the outlet pipe in the contraflow area.
  • exhaust noise flowing in the expanding chamber in one direction flows into the outlet pipe through the interference holes bored in the outlet pipe, interferes with exhaust noise flowing in the outlet pipe in the direction reverse to the flowing direction in the expanding chamber, and is attenuated by that interfering action.
  • At least one expanding chamber may be a plurality of expanding chambers, the inlet pipe is disposed to open into one of them and to introduce exhaust gas into the muffler, and the outlet pipe is disposed to open into other one and to introduce exhaust gas out of the muffler.
  • the range in which the interference holes are provided may as well be not less than 75% of the length of the outlet pipe in the contraflow area.
  • the time of arrival differs as much as this difference in route.
  • phase of exhaust noise having entered into the outlet pipe via the opening of the outlet pipe differs from the phase of exhaust noise having entered into the outlet pipe via the interference holes (phase difference), they interfere with each other and the noise is attenuated.
  • bypass holes composed of a plurality of small holes communicating with the expanding chamber may be bored downstream from the part of the outlet pipe in the contraflow area, and the total aperture area of the interference holes and the bypass holes together may be kept not greater than the sectional area of the passage in the outlet pipe.
  • This configuration proves effective in attenuating noise in the low revolution area by virtue of its bypass holes.
  • interference holes composed of a plurality of small holes communicating with the expanding chamber may be bored in the contraflow section of the inlet pipe.
  • FIG. 1 is a side sectional view showing a first embodiment according to the present invention
  • FIG. 2A and FIG. 2B are front views of separators in FIG. 1, respectively
  • FIG. 3 is a diagram showing a result of analysis simulating a primary component of exhaust noise by varying a total aperture area of interference holes relative to a surface area of the outlet pipe in its contraflow area L2 in the embodiment of FIG. 1
  • FIG. 4 is a diagram showing a result of analysis simulating a relationship of an average attenuate level to an opening area ratio of the interference holes in the embodiment of FIG. 1
  • FIG. 5 is a side sectional view showing a second embodiment of the invention
  • FIG. 6 is a front view of a separator in FIG. 5;
  • FIG. 7 is a side sectional view showing a third embodiment of the invention
  • FIG. 8 is a side sectional view showing a fourth embodiment of the invention
  • FIG. 9 is a sectional view taken along a line IX-IX in FIG. 8
  • FIG. 10 is a side sectional view showing a fifth embodiment of the invention
  • FIG. 11 is a side sectional view showing a conventional muffler.
  • Embodiments according to the present invention will be described with reference to FIG. 1 through FIG. 10.
  • FIG. 1 and FIG. 4 show a first embodiment of the invention.
  • a housing 2 in a muffler 1 is constituted of a metallic cylinder of which both ends are reduced in diameter to form constrictions 2a and 2b.
  • a separator 3 in which a plurality of through holes 3a and two burring holes 3b and 3c are bored as shown in FIG. 2A and a separator 4 in which a plurality of through holes 4a and two burring holes 4b and 4c are bored as shown in FIG. 2B are fixed with a prescribed spacing L1 between them, and they partition the housing 2 in the lengthwise direction into a first expanding chamber 11, a second expanding chamber 12 and a third expanding chamber 13.
  • an inlet pipe 5 for introducing exhaust gas into the muffler 1 is disposed, and its downstream side aperture 5a opens into the first expanding chamber 11.
  • an upstream side aperture 5b is connected to an upstream side exhaust pipe.
  • an outlet pipe 6 to discharge exhaust gas out of the muffler 1 is disposed, and its upstream side aperture 6a opens into the third expanding chamber 13.
  • a downstream side aperture 6b is connected to a downstream side exhaust pipe.
  • the interference holes 7 constituted of a plurality of small holes communicating with the first through third expanding chambers 11 through 13 are bored, positioned in this contraflow area L2, in the outlet pipe 6.
  • the contraflow area L2 means a range in the muffler, similarly to the inlet pipe 5, the range in which the flowing direction of exhaust gas in the outlet pipe 6 is not identical with the flowing direction of exhaust gas in the expanding chambers.
  • Exhaust noise like the exhaust gas described above, circulates within the muffler and is attenuated by the expanding chambers 11 through 13 by their expansive actions.
  • an area L3 in which the interference holes 7 of FIG. 1 are bored to correspond to 75% or more of the length of the contraflow area L2.
  • the open area ratio is not less than 1% but not more than 5%. It is even more preferable for the ratio to be not less than 1.5% but not more than 3.5%.
  • FIG. 5 and FIG. 6 show a second embodiment of the invention.
  • the housing of a muffler 21 is composed of a shell 22 cylindrically formed of a steel plate and outer plates 23 and 24 caulk-coupled to both ends of the shell 22.
  • a separator 31 in which a plurality of through holes 31a and a burring hole 31b are bored as shown in FIG. 6 is fixed, and the housing is partitioned by the separator 31 into a first expanding chamber 29 and a second expanding chamber 30.
  • discharge ports (apertures) 28 are bored discharge ports (apertures) 28 so that exhaust gas in the inlet pipe 25 can flow into the first expanding chamber 29 via the discharge ports 28.
  • An outlet pipe 26 is inserted into a burring hole 24a of an outer plate 24 and the burring hole 31b of the separator 31, so that an aperture 26a on the upstream side open into the second expanding chamber 30.
  • interference holes 32 constituting of a plurality of small holes communicating with the first and second expanding chambers 29 and 30 are bored, positioned in this contraflow area L4, in the outlet pipe 26.
  • exhaust gas having circulated in the inlet pipe 25 as indicated by an arrow F flows into the first expanding chamber 29 via the discharge ports 28 of the inlet pipe 25; then a greater part of the exhaust gas flows into the first expanding chamber 29 as indicated by an arrow G, flows into the second expanding chamber 30 via the through holes 31a of the separator 31, and flows within the second expanding chamber 30 as indicated by an arrow H; then after inverting its flowing direction as indicated by an arrow I, flows into the outlet pipe 26 via the upstream side aperture 26a of the outlet pipe 26, and circulates within the outlet pipe 26 in the direction of an arrow J, which is reverse to the flowing directions G and H within the first and second expanding chambers 29 and 30.
  • This second embodiment can achieve a similar effect to the first embodiment by keeping the open area ratio of the interference holes 32 not less than 1% but not more than 5% or, more preferably, not less than 1.5% but not more than 3.5%.
  • an area L5 in which the interference holes 32 are bored to correspond to 75% or more of the length of the contraflow area L4 shown in FIG. 5.
  • FIG. 7 shows a third embodiment of the invention.
  • the housing 42 of a muffler 41 is constituted of a metallic cylinder of which both ends are coaxially reduced in diameter to form a constriction 42a and a constriction 42b.
  • the separator 3 in which through holes 3a are bored as shown in the first embodiment and the separator 4 in which the through holes 4a are bored are fixed with the prescribed spacing L1 between them, and they partition the housing 42 in the longitudinal direction into a first expanding chamber 51, a second expanding chamber 52 and a third expanding chamber 53.
  • an inlet pipe 45 for introducing exhaust gas into the muffler 41 is disposed, held by the constriction 42a and the separators 3 and 4, and an aperture 45a on its downstream side opens into the first expanding chamber 51.
  • an aperture 45b on its upstream side is connected to an upstream exhaust pipe.
  • an outlet pipe 46 for discharging exhaust gas out of the muffler 41 is disposed, held by the constriction 42b and the separators 3 and 4, and an aperture 46a at its upstream end opens into the third expanding chamber 53.
  • an aperture 46b on the its downstream side is connected to a downstream exhaust pipe.
  • Both the inlet pipe 45 and the outlet pipe 46 are disposed in a bent form to be shifted to each other in the muffler 41 as shown in FIG. 7.
  • interference holes 47 composed of a plurality of small holes communicating with the first through third expanding chambers 51 through 53 are bored, positioned in the contraflow area L2, in the outlet pipe 46.
  • bypass holes 48 composed of a plurality of small holes communicating with the first expanding chamber 51.
  • the bypass holes 48 it is preferable for the bypass holes 48 to be as far downstream of the outlet pipe 46 as practicable.
  • the total aperture area of the interference holes 47 and the bypass holes 48 together is kept not greater than the passage area of the outlet pipe 46.
  • interference holes 49 composed of a plurality of small holes communicating with the second expanding chamber 52.
  • This third embodiment besides achieving similar actions and effects to the first embodiment described above, also proves effective in attenuating noise in the low revolution range by virtue of the bypass holes 48 bored in the outlet pipe 46.
  • the presence of the interference holes 49 in the inlet pipe 45 makes it possible to achieve an even greater attenuating effect without reducing the attenuating effect in the high revolution range of the engine.
  • FIG. 8 and FIG. 9 show a fourth embodiment of the invention.
  • This fourth embodiment is a version of the third embodiment described above modified in the inlet pipe 45 and the outlet pipe 46, in which the sections of an inlet pipe 65 and an outlet pipe 66 are formed in a substantially D shape within the muffler 41 as shown in FIG. 9, and these pipes are joined together to form a substantially circular sectional shape.
  • a wire mesh 74 is held between the downstream end of the outlet pipe 66 and the constriction 42b of the housing 42 to enable any difference in thermal expansion between the housing 42 and the outlet pipe 66 to be absorbed.
  • the total aperture area of the interference holes 47 and the bypass holes 48 together is kept not greater than the passage area in the substantially D shaped sectional area of the outlet pipe 46.
  • This fourth embodiment can achieve similar actions and effects to the third embodiment described above.
  • the fourth embodiment described above is an example in which the inlet pipe 65 and the outlet pipe 66 are formed in a D sectional shape and joined together, it is also conceivable to use a separate pipe whose inside is divided in the radial direction with a partitioning board to form in parallel passages each having a substantially D-shaped section and to whose open ends the inlet pipe and the outlet pipe are joined, respectively.
  • each of the first embodiment through the fourth embodiment described above is provided with a plurality of expanding chambers, only one expanding chamber may as well be disposed in the muffler as in a fifth embodiment shown in FIG. 10.
  • the fifth embodiment is a modified version of the third embodiment less the separators 3 and 4, in which a single expanding chamber 91 is formed in the housing 42 of a muffler 81.
  • the inlet pipe 45 and the outlet pipe 46 are supported by stays 93 and 94, respectively.
  • the housing of the muffler can as well be formed by some other known method than what was described with respect to the foregoing first through fifth embodiments, such as joining press-formed shells to each other, and its sectional shape can also be selected as desired.
  • an attenuating effect in an even broader revolution range of the engine can be achieved if interference holes are disposed in a range of 75% or more of the length in the contraflow area of the outlet pipe.
  • an attenuating effect in the low revolution range can be achieved by boring bypass holes communicating with the expanding chamber(s) in the downstream part matching the contraflow area of the outlet pipe and keeping the total aperture area of the interference holes and the bypass holes together not greater than the sectional area of the passage in the outlet pipe.
  • an even greater attenuating effect can be achieved without reducing the attenuating effect in the high revolution range of the engine by boring interference holes communicating with the expanding chamber(s) in the inlet pipe in its contraflow area.

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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)
EP03705335A 2002-02-20 2003-02-19 Silencieux pour moteur a combustion interne Withdrawn EP1477642A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2002043286 2002-02-20
JP2002043286 2002-02-20
JP2002335913 2002-11-20
JP2002335913A JP2003314240A (ja) 2002-02-20 2002-11-20 内燃機関の消音器
PCT/JP2003/001815 WO2003071103A1 (fr) 2002-02-20 2003-02-19 Silencieux pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1477642A1 true EP1477642A1 (fr) 2004-11-17
EP1477642A4 EP1477642A4 (fr) 2010-06-09

Family

ID=27759647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03705335A Withdrawn EP1477642A4 (fr) 2002-02-20 2003-02-19 Silencieux pour moteur a combustion interne

Country Status (4)

Country Link
US (1) US20050224283A1 (fr)
EP (1) EP1477642A4 (fr)
JP (1) JP2003314240A (fr)
WO (1) WO2003071103A1 (fr)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2007110002A1 (fr) * 2006-03-28 2007-10-04 GISTR, Jirí Silencieux de gaz d'échappement, en particulier pour des véhicules à moteur
WO2011095458A1 (fr) * 2010-02-08 2011-08-11 Heinrich Gillet Gmbh Silencieux d'échappement
EP2535534A1 (fr) * 2010-02-01 2012-12-19 Futaba Industrial Company Ltd. Silencieux pour moteur à combustion interne
WO2017076377A1 (fr) 2015-11-05 2017-05-11 MACHOVÁ, Zdeňka Silencieux de pot d'échappement combiné
CN107762590A (zh) * 2016-08-18 2018-03-06 现代自动车株式会社 消声器的结构

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SE528092C2 (sv) * 2004-06-17 2006-09-05 Ggp Sweden Ab Anordning vid förbränningsmotor
JP2006275037A (ja) * 2005-03-25 2006-10-12 Sango Co Ltd 消音器
JP2006348896A (ja) * 2005-06-20 2006-12-28 Sango Co Ltd 消音器
US20070125594A1 (en) * 2005-12-01 2007-06-07 Hill William E Muffler assembly with sound absorbing member
KR101097241B1 (ko) * 2006-01-17 2011-12-22 도요타 지도샤（주） 차량용 머플러구조
DE102006016095A1 (de) * 2006-04-04 2007-10-11 J. Eberspächer GmbH & Co. KG Schalldämpfer
DE102006017812C5 (de) * 2006-04-13 2024-08-01 Faurecia Emissions Control Technologies, Germany Gmbh Schalldämpfer für eine Abgasanlage
KR101063640B1 (ko) * 2008-06-12 2011-09-08 현대자동차주식회사 차량용 소음기
KR101126970B1 (ko) * 2009-10-08 2012-03-22 기아자동차주식회사 차량용 소음기
US8191676B2 (en) * 2010-11-04 2012-06-05 Ford Global Technologies, Llc Resonator for a dual-flow exhaust system
JP5758156B2 (ja) * 2011-03-11 2015-08-05 本田技研工業株式会社 内燃機関の排気装置
JP5705707B2 (ja) * 2011-11-17 2015-04-22 トヨタ自動車株式会社 マフラ
KR101823215B1 (ko) * 2013-02-12 2018-03-08 포레시아 이미션스 컨트롤 테크놀로지스, 유에스에이, 엘엘씨 공진 감쇠 기능을 갖춘 차량용 배기 시스템
JP6059749B2 (ja) * 2015-02-23 2017-01-11 本田技研工業株式会社 排気マフラー
JP6335835B2 (ja) * 2015-04-23 2018-05-30 本田技研工業株式会社 排気装置
KR101943607B1 (ko) * 2017-05-18 2019-01-29 성균관대학교산학협력단 음향 공진장치
US11236653B2 (en) * 2019-01-24 2022-02-01 Caterpillar Inc. Multi-chambered sound attenuation with resonant frequency targeting

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
WO2007110002A1 (fr) * 2006-03-28 2007-10-04 GISTR, Jirí Silencieux de gaz d'échappement, en particulier pour des véhicules à moteur
US7735604B2 (en) 2006-03-28 2010-06-15 Eduard Mikes Silencer of exhaust gases, in particular for motor vehicles
EP2535534A1 (fr) * 2010-02-01 2012-12-19 Futaba Industrial Company Ltd. Silencieux pour moteur à combustion interne
EP2535534A4 (fr) * 2010-02-01 2015-01-21 Futaba Ind Co Ltd Silencieux pour moteur à combustion interne
WO2011095458A1 (fr) * 2010-02-08 2011-08-11 Heinrich Gillet Gmbh Silencieux d'échappement
WO2017076377A1 (fr) 2015-11-05 2017-05-11 MACHOVÁ, Zdeňka Silencieux de pot d'échappement combiné
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CN107762590B (zh) * 2016-08-18 2020-10-30 现代自动车株式会社 消声器的结构

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US20050224283A1 (en) 2005-10-13
WO2003071103A1 (fr) 2003-08-28
JP2003314240A (ja) 2003-11-06
EP1477642A4 (fr) 2010-06-09

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