CN1080820C - Silencing apparatus with catalyst inside - Google Patents
Silencing apparatus with catalyst inside Download PDFInfo
- Publication number
- CN1080820C CN1080820C CN97117802A CN97117802A CN1080820C CN 1080820 C CN1080820 C CN 1080820C CN 97117802 A CN97117802 A CN 97117802A CN 97117802 A CN97117802 A CN 97117802A CN 1080820 C CN1080820 C CN 1080820C
- Authority
- CN
- China
- Prior art keywords
- inlet
- muffler body
- catalyzer
- silencing apparatus
- inlet duct
- 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 - Fee Related
Links
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
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- 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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
- F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
-
- 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
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
-
- 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
- F01N1/24—Silencing apparatus characterised by method of silencing by using 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
- F01N2230/00—Combination of silencers and other devices
- F01N2230/04—Catalytic converters
-
- 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
- F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A muffler with a built-in catalyst to have a high muffling effect and reduce the generation of a back pressure by effectively utilizing a space, comprises a muffler body provided at two ends with a pair of first and second end plates, a monolith catalyst arranged in the muffler body, an inlet pipe arranged in a state to extend through a first end plate and having a plurality of first ventilation holes formed in a part fronting on the inlet chamber, an outlet pipe arranged in a state to extend through a second end plate and having a plurality of second ventilation holes formed in a part fronting on the outlet chamber, and a cone body for dispersing exhaust gas having one end connected to the end part of an inlet pipe fronting on the inlet chamber and the other end adhered on the inner peripheral surface of the inlet camber of the muffler body. A resonance sound absorbing camber is formed at the outside of the cone body.
Description
The present invention relates to a kind of silencing apparatus of eliminating engine exhaust noise, relate in particular to a kind of silencing apparatus that catalyzer is set in inside.
Prior art shown in Fig. 2 a, in the silencing apparatus 1 of eliminating engine exhaust noise, the inside of the tubular muffler body 4 that two ends are sealed by a pair of first and second end plate 2,3, be divided into first～the 3rd expansion chamber 4a, 4b, 4c by first and second dividing plate 5,6, the front end of inlet duct 7 is inserted into the first expansion chamber 4a from first end plate 2, and the cardinal extremity of outer pipe 8 is inserted into the 3rd expansion chamber 4c from second end plate 3.Described inlet duct 7 be positioned at the first expansion chamber 4a part be formed with many first aperture 7a, the part that is positioned at the 3rd expansion chamber 4c of outer pipe 8 is formed with many second aperture 8a.On first dividing plate 5, also be formed with the first through hole 5a that is communicated with first and second expansion chamber 4a, 4b, on second partition 6, be formed with the second through hole 6a that is communicated with second and third expansion chamber 4b, 4c.The cardinal extremity of the inlet duct 7 of the silencing apparatus 1 of this structure is connected on the upstream exhaust pipe of not representing among the figure, and the front end of its outer pipe 8 is connected on the downstream row tracheae of not representing among the figure.
On the other hand, owing to, be well known that the structure that to be contained in the catalyzer 9 among the second expansion chamber 4b in recent years to the requirement of silencing apparatus 1 multipurposeization.As shown in the figure, catalyzer 9 is provided with by a pair of carriage 9a, 9a, and the discharge gas of invading the second expansion chamber 4b from the first through hole 5a of first dividing plate 5 is all by described catalyzer 9, and the through hole 6a by second partition 6 enters the 3rd expansion chamber 4c again.This catalyzer 9 forms by load precious metals such as Pt or Pd on ceramic monolith such as cellular Woelm Alumina or the alloy carrier that is made of metal.The SOF (the solvable organic moiety of Soluble Organic Fraction-) that discharges in the gas by described catalyst oxidation, is discharged in the atmosphere after carbon dioxide and water are cleaned again.
In described silencing apparatus 1, the discharge gas of the High Temperature High Pressure of discharging from motor by upstream exhaust pipe and inlet duct 7 when the first aperture 7a enters the first expansion chamber 4a, in the first expansion chamber 4a, reduce pressure owing to expanding, when described discharge gas when the first through hole 5a of first dividing plate 5 enters the second expansion chamber 4b, be depressurized and noise reduction further.In the second expansion chamber 4b, discharge gas and purified by catalyzer 9, when the through hole 6a of the second expansion chamber 4b by second partition 6 enters the 3rd expansion chamber 4c, further be depressurized again.And the heat of discharging gas is passed to have large-area muffler body 4 and is diffused in the atmosphere.As a result, discharge gas and be cleaned, exhaust noise is eliminated.
, in the silencing apparatus of above-mentioned apparatus with catalyst inside, also leaving over an open questions such as discharge gas flow complexity, backpressure rising.Promptly, shown in solid arrow among the figure, must invade from the first through hole 5a of first dividing plate 5 the second expansion chamber 4b by the discharge gas that the first aperture 7a enters the first expansion chamber 4a through inlet duct 7 from upstream exhaust pipe, therefore catalyzer 9 by being supported by carriage 9a is caused by the complexity of discharging gas flow that backpressure rises again.In addition, owing to there is the gas problem evenly passed through of catalyzer 9 relatively of discharging in this complexity.Moreover, the tendency that backpressure is further raise to the inhomogeneous generation of catalyzer 9.
For solving this point, shown in Fig. 2 b, when considering to remove the first expansion chamber 4a, making inlet duct 7 enlarge lentamente and will discharge gas smoothly towards catalyzer 9 is directed in the catalyzer 9, owing to removed first expansion chamber, erasure effect at silencing apparatus reduces, and the inlet duct 7 from slow expansion makes catalyst performance reduce to outside radiations heat energy simultaneously, also produces wasted space in the outside of inlet duct 7.
The purpose of this invention is to provide a kind of good muffling effect, do not produce wasted space and reduce the silencing apparatus of the apparatus with catalyst inside of backpressure.
For achieving the above object, the silencing apparatus of apparatus with catalyst inside of the present invention as shown in Figure 1, comprise that two ends are equipped with a pair of first and second end plates 12,13 tubular muffler body 14, the catalyzer 16 that is arranged on described muffler body 14 inside and is 14a of inlet and the 14b of room of outlet with described muffler body 14 internal separation, run through described first end plate 12 and be provided with and be in the inlet duct 17 that part among the described 14a of inlet is formed with a plurality of first vent 17a at it, run through described second end plate 13 and be provided with and be in the outer pipe 18 that part among the described 14b of room of outlet is formed with a plurality of second vent 18a at it, and one end be connected to the end that is in the described inlet duct 17 among the described 14a of inlet and the other end is bonded on discharge gaseous diffusion on the 14a of the inlet inner peripheral surface of described muffler body 14 with cone 19, and, use the outside of cone 19 to form the sympathetic response anechoic chamber 14c that is communicated with the first vent 17a in the described discharge gaseous diffusion of the described 14a of inlet.
And, in the silencing apparatus of above-mentioned apparatus with catalyst inside, when discharge gas enters the 14a of inlet by inlet duct 17, cause noise reduction by expansion from the first vent 17a to sympathetic response anechoic chamber 14c.Discharge gas after the noise reduction arrives catalyzer 16 from inlet duct 17 smoothly by cone 19 guiding.
Brief description of drawings:
Fig. 1 is the longitudinal sectional drawing of the silencing apparatus of apparatus with catalyst inside of the present invention;
Fig. 2 a is the longitudinal sectional drawing of silencing apparatus of the apparatus with catalyst inside of prior art;
Fig. 2 b is the longitudinal sectional drawing of silencing apparatus of the apparatus with catalyst inside of improved prior art.
Explain embodiments of the invention below in conjunction with accompanying drawing.
As shown in Figure 1, the silencing apparatus 11 of eliminating engine exhaust noise has two ends by the tubular muffler body 14 of a pair of first and second end plate 12,13 sealings, is equiped with integer catalyzer 16 in the inside of described muffler body 14.Integer catalyzer 16 is that example is illustrated with the catalyzer of ceramic monolith or alloy carrier.Supporting the two ends of integer catalyzer by a pair of carriage 16a, 16a, and with carriage 16a, the outer circumferential face of 16a is fixed on the inner peripheral surface of muffler body 14, thus catalyzer 16 by in be loaded in the silencing apparatus 11.In the present embodiment, catalyzer 16 is by Pt or Pd are disperseed to be loaded in to make the oxidation catalyst that (not shown) forms on the cellular porous alumina carrier.And by such installation, catalyzer 16 is 14a of inlet and the 14b of room of outlet with the internal separation of muffler body 14.
The front end of inlet duct 17 runs through first end plate 12 and is provided with, and outer pipe 18 runs through second end plate, 13 its cardinal extremities of back and inserts among the 14b of room of outlet.The end of the inlet duct 17 in the 14a of inlet is connected an end of discharging the cone 19 that gaseous diffusion uses, and the other end of cone 19 is connected on the inner peripheral surface of the 14a of inlet of muffler body 14.Cone 19 is 16 expansions lentamente from inlet duct 17 towards catalyzer.By the other end that is bonded on the 14a of the inlet inner peripheral surface, further divide the 14a of inlet and form sympathetic response anechoic chamber 14c in the outside of cone 19.And the part that is among the 14a of inlet at inlet duct 17 is formed with a plurality of first vent 17a, and the described first vent 17a makes inlet duct 17 inner and sympathetic response anechoic chamber 14c connections.
The 14b of room of outlet is separated by dividing plate 21, and the end of running through the outer pipe 18 of second end plate 13 is fixed on the dividing plate 21.Outer pipe 18 be among the 14b of room of outlet periphery on be formed with a plurality of second vent 18a, on dividing plate 21, be formed with through hole 21a.The cardinal extremity of the inlet duct 17 of described silencing apparatus 11 be connected among the figure do not have expression, with upstream exhaust pipe that the engine exhaust house steward links to each other on, and the front end of outer pipe 18 connects and does not have in the drawings on downstream row tracheae expression, that front end is opened atmosphere.
The following describes the operation of silencing apparatus of the apparatus with catalyst inside of this structure.
In described silencing apparatus 11, discharge gas when entering the 14a of inlet when the High Temperature High Pressure of discharging through upstream exhaust pipe and inlet duct 17 by motor, rely on expansion and noise reduction from the first vent 17a to sympathetic response anechoic chamber 14c.Discharge gas through noise reduction enters cone 19 from inlet duct 17, and shown in arrow among the figure, the guiding by cone 19 arrives catalyzer 16 smoothly again.The discharge gas that arrives catalyzer 16 passes through the inside of catalyzer 16, makes the SOF that discharges in the gas by catalyst oxidation thus, purifies to be carbon dioxide and water.Through the discharge gas of catalyzer 16, when marching to 14b of room of outlet and the through hole 21a by dividing plate 21, further be depressurized, pass through then outer pipe 18 from the downstream exhaust gas tube drainage to atmosphere.In addition, the heat of discharge gas is passed to has larger area muffler body 14, diffuses in the atmosphere again.
As mentioned above, according to the present invention, because have the muffler body internal separation is the catalyzer of inlet and room of outlet, part in being in inlet is formed with the inlet duct of a plurality of first vents, and one end be connected to inlet duct be in end in the inlet and the other end is connected the discharge gaseous diffusion cone on the inner peripheral surface of muffler body inlet, and use the outside of cone to form the sympathetic response anechoic chamber that is communicated with first vent in the discharge gaseous diffusion of inlet, therefore, when discharge gas enters inlet through inlet duct, carry out noise reduction by the expansion from first vent to the sympathetic response anechoic chamber, the discharge gas after the noise reduction is arrived the catalyzer by the cone guiding smoothly from inlet duct.Its result, does not produce useless space and and reduces backpressure the silencing apparatus good muffling effect of apparatus with catalyst inside of the present invention.
Claims (1)
1. the silencing apparatus of an apparatus with catalyst inside, it is characterized in that, comprise that two ends are equipped with a pair of first and second end plates (12,13) tubular muffler body (14), it is inner and be the catalyzer (16) of inlet (14a) and room of outlet (14b) with described muffler body (14) internal separation to be arranged on described muffler body (14), run through described first end plate (12) and be provided with and be in the inlet duct (17) that part in the described inlet (14a) is formed with a plurality of first vents (17a) at it, run through described second end plate (13) and be provided with and be in the outer pipe (18) that part in the described room of outlet (14b) is formed with a plurality of second vents (18a) at it, and one end be connected to the end of the described inlet duct (17) that is in the described inlet (14a) and the other end is bonded on discharge gaseous diffusion on inlet (14a) inner peripheral surface of described muffler body (14) with cone (19), form the sympathetic response anechoic chamber (14c) that is communicated with first vent (17a) in the described discharge gaseous diffusion of described inlet (14a) with the outside of cone (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP295013/96 | 1996-11-07 | ||
| JP8295013A JPH10141050A (en) | 1996-11-07 | 1996-11-07 | Muffler with built-in catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1182169A CN1182169A (en) | 1998-05-20 |
| CN1080820C true CN1080820C (en) | 2002-03-13 |
Family
ID=17815213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97117802A Expired - Fee Related CN1080820C (en) | 1996-11-07 | 1997-06-20 | Silencing apparatus with catalyst inside |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH10141050A (en) |
| KR (1) | KR100210961B1 (en) |
| CN (1) | CN1080820C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542687A (en) * | 2018-01-29 | 2020-08-14 | 株式会社丰田自动织机 | Exhaust gas purification device |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6935461B2 (en) | 1998-08-18 | 2005-08-30 | Gregory M. Marocco | Exhaust sound and emission control systems |
| US7549511B2 (en) | 1998-08-18 | 2009-06-23 | Marocco Gregory M | Exhaust sound and emission control systems |
| AU5481299A (en) * | 1998-08-18 | 2000-03-14 | Gregory M. Marocco | Catalytic converter and resonator combination |
| US7281606B2 (en) | 1998-08-18 | 2007-10-16 | Marocco Gregory M | Exhaust sound and emission control systems |
| JP2001003744A (en) * | 1999-06-16 | 2001-01-09 | Sango Co Ltd | Exhaust device for internal combustion engine |
| JP4340365B2 (en) * | 1999-11-26 | 2009-10-07 | 東京濾器株式会社 | Catalyst muffler |
| JP3861683B2 (en) * | 2001-12-20 | 2006-12-20 | トヨタ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
| JP2004143996A (en) * | 2002-10-23 | 2004-05-20 | Sakura Shokai:Kk | Exhaust emission control device |
| CN1333157C (en) * | 2003-02-26 | 2007-08-22 | 李行 | Waste gas purification method |
| JP2007224825A (en) * | 2006-02-23 | 2007-09-06 | Tokyo Roki Co Ltd | Exhaust gas treatment device for internal combustion engine |
| JP5244334B2 (en) | 2007-05-01 | 2013-07-24 | 三菱ふそうトラック・バス株式会社 | Exhaust gas purification device for internal combustion engine |
| US7895832B2 (en) * | 2007-06-28 | 2011-03-01 | Harley-Davidson Motor Company Group, Inc. | Performance exhaust system |
| KR101528371B1 (en) * | 2008-12-15 | 2015-06-12 | 두산인프라코어 주식회사 | Detachable muffler device for vehicle |
| JP2010276000A (en) * | 2009-06-01 | 2010-12-09 | Suzuki Motor Corp | Muffler and motorcycle |
| CN101922342B (en) * | 2010-09-21 | 2015-10-14 | 中国第一汽车集团公司 | Straight-through particle filtration post-processor assembly |
| CN112412583B (en) * | 2020-11-30 | 2022-07-08 | 重庆长安汽车股份有限公司 | Three way catalyst converter, engine exhaust assembly and car |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104467A (en) * | 1985-06-11 | 1986-12-31 | 唐纳森有限公司 | Muffler and manufacture method |
-
1996
- 1996-11-07 JP JP8295013A patent/JPH10141050A/en active Pending
-
1997
- 1997-06-17 KR KR1019970025111A patent/KR100210961B1/en not_active IP Right Cessation
- 1997-06-20 CN CN97117802A patent/CN1080820C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104467A (en) * | 1985-06-11 | 1986-12-31 | 唐纳森有限公司 | Muffler and manufacture method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542687A (en) * | 2018-01-29 | 2020-08-14 | 株式会社丰田自动织机 | Exhaust gas purification device |
| CN111542687B (en) * | 2018-01-29 | 2022-05-17 | 株式会社丰田自动织机 | Exhaust gas purification device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100210961B1 (en) | 1999-07-15 |
| KR19980041765A (en) | 1998-08-17 |
| CN1182169A (en) | 1998-05-20 |
| JPH10141050A (en) | 1998-05-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020313 |