CN106523098A - Method for decreasing noise of three-way catalytic converter of automobile - Google Patents
Method for decreasing noise of three-way catalytic converter of automobile Download PDFInfo
- Publication number
- CN106523098A CN106523098A CN201610989355.7A CN201610989355A CN106523098A CN 106523098 A CN106523098 A CN 106523098A CN 201610989355 A CN201610989355 A CN 201610989355A CN 106523098 A CN106523098 A CN 106523098A
- Authority
- CN
- China
- Prior art keywords
- catalytic converter
- way catalytic
- noise
- automobile
- carriers
- 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.)
- Pending
Links
Classifications
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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
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a method for decreasing noise of a three-way catalytic converter of an automobile. According to the method for decreasing noise of the three-way catalytic converter of the automobile, catalytic carriers in the three-way catalytic converter are manufactured into W shapes, and the catalytic carriers are piled up in sequence to form an integral carrier. The carriers are divided into at least two sections in the three-way catalytic converter, the interval between every two sections is 20-40 mm, and poriness of the carriers lies between 20% and 30%. According to the method for decreasing noise of the three-way catalytic converter of the automobile, by installing the carriers with special structures in the three-way catalytic converter and arranging special intervals, noise can be lowered when tail gas flows through the three-way catalytic converter, so that the three-way catalytic converter also has the effect of a silencer, and the silencer can be omitted in an air exhaust pipeline.
Description
Technical field
A kind of the present invention relates to automobile noise reduction technical field, more particularly to method for reducing automobile three-way catalysts noise.
Background technology
The traffic noise of automobile is the main source of city noise pollution, and wherein exhaust noise is the main noise of automobile
Source.The main source of exhaust noise has：The radiated noise of discharge duct radiation, the case noise of acoustic filter Wall Radiation, aerofluxuss
There is leakage sound caused by gap in tailpipe exit air-flow radiation sound and system coupling part.
Exhaust silencer is installed in gas extraction system, reduces can automobile engine to exhaust pulsation, aerofluxuss can be made again to make an uproar
Sound is reduced.Exhaust silencer is according to noise elimination mechanism the impedance complex for being divided into dissipative muffler, reactive muffler and both combine
Three class of formula acoustic filter.Resistive acoustic filter using the sound-absorbing material in acoustic filter into sound absorption structure, make along pipe transmmision make an uproar Lu with
The increase of propagation distance and absorbed, so as to damping capacity, reach the purpose of noise elimination.Anti- formula acoustic filter is by pipeline section
Sudden enlargement and contraction, or side connects resonant cavity, the noise along pipe transmmision is gone to sound source reflection at mutation, and is not passed through
Acoustic filter, reaches the purpose of noise elimination with this..The characteristics of impedance composite muffler has the two concurrently, can be in wider frequency range
Obtain higher sound deadening capacity.
The ratio of acoustic filter total measurement (volume) and engine displacement between 3-5, due to kart exhaustor it is short, three-element catalytic
Device installing space is very little, limits the installation of aerofluxuss duct member.Simultaneously as widely using for low back pressure gas extraction system, more
Individual part is installed in exhaustor, certainly will cause the lifting of exhaust back pressure.Given this reason, after ternary catalyzing unit is installed, such as
Fruit gasoline engine does not install acoustic filter, can effectively reduce aerofluxuss and be pressed, improve engine performance, and reduce installing space.
Therefore three-way catalyst has noise reduction capability concurrently, is the focus of this area development.
The content of the invention
It is an object of the invention to propose the method for reducing automobile three-way catalysts noise, ternary catalyzing unit is enabled to simultaneous
The effect of tool acoustic filter, so that install acoustic filter on gas exhaust piping.
It is that, up to this purpose, the present invention is employed the following technical solutions：
Catalyst carrier in ternary catalyzing unit is made by a kind of method for reducing automobile three-way catalysts noise, methods described
W types, its order stacking form complete vector, and the carrier is divided at least 2 sections in ternary catalyzing unit, is spaced 20- between per section
40mm, the porosity of the carrier is between 20%-30%.
The present invention by carrier is arranged to W types order stacking, meet to discharge directions, therefore aerofluxuss by the V-type side of W types
4 sides of W type carriers are needed guiding through, simultaneously as the carrier has porosity, aperture on its side, is distributed with, aerofluxuss exist
When the W sides of aperture are spread all over, speed is gradually reduced, and friction loss gradually increases so that sound is gradually lowered.
In the ternary catalyzing unit of the present invention, carrier is placed in one, but there is interval, forms cavity.This is
Because carrier has resistive and reactive muffling mechanism simultaneously, the cavity between carrier equivalent to an expansion chamber is formed, so as to have
Resistant noise elimination effect.
Carrier of the present invention by the setting ad hoc structure in ternary catalyzing unit, and specific gap is set so that tail gas
When ternary catalyzing unit is flowed through, sound can be reduced, so that the ternary catalyzing unit has the effect of acoustic filter, Ke Yi concurrently
Acoustic filter is omitted in gas exhaust piping.
Specific embodiment
Embodiment 1
Catalyst carrier in ternary catalyzing unit is made by a kind of method for reducing automobile three-way catalysts noise, methods described
W types, its order stacking form complete vector, and the carrier is divided into 2 sections in ternary catalyzing unit, is spaced 20mm between per section, institute
The porosity for stating carrier is 20%.
Embodiment 2
Catalyst carrier in ternary catalyzing unit is made by a kind of method for reducing automobile three-way catalysts noise, methods described
W types, its order stacking form complete vector, and the carrier is divided into 4 sections in ternary catalyzing unit, is spaced 20mm between per section, institute
The porosity for stating carrier is 30%.
Through detection, after installing the ternary catalyzing unit on gas exhaust piping and cancelling acoustic filter, its noise is less than
62dB, complies fully with the requirement of laws and regulations.
Claims (1)
1. a kind of method for reducing automobile three-way catalysts noise, catalyst carrier in ternary catalyzing unit made W by methods described
Type, its order stacking form complete vector, and the carrier is divided at least 2 sections in ternary catalyzing unit, is spaced 20- between per section
40mm, the porosity of the carrier is between 20%-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989355.7A CN106523098A (en) | 2016-11-10 | 2016-11-10 | Method for decreasing noise of three-way catalytic converter of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989355.7A CN106523098A (en) | 2016-11-10 | 2016-11-10 | Method for decreasing noise of three-way catalytic converter of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523098A true CN106523098A (en) | 2017-03-22 |
Family
ID=58350729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610989355.7A Pending CN106523098A (en) | 2016-11-10 | 2016-11-10 | Method for decreasing noise of three-way catalytic converter of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523098A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4205458A1 (en) * | 1992-02-22 | 1993-08-26 | Bosch Gmbh Robert | MUFFLERS FOR BLOWERS |
| US5285640A (en) * | 1992-07-21 | 1994-02-15 | Olivo John R | Integrated post-engine emissions heater, catalytic converter and muffler |
| CN201326446Y (en) * | 2008-09-08 | 2009-10-14 | 奇瑞汽车股份有限公司 | Novel three-way catalyst carrier |
| CN202431342U (en) * | 2011-12-20 | 2012-09-12 | 郑州精益达汽车零部件有限公司 | Three-way catalytic converter for vehicle |
| CN203796372U (en) * | 2013-10-24 | 2014-08-27 | 洛阳市华宝非金属材料有限公司 | Three-way catalyst carrier structure |
| CN204511591U (en) * | 2015-01-29 | 2015-07-29 | 辽宁石油化工大学 | A kind of coupled mode automobile three-way catalysts |
| CN105649717A (en) * | 2016-01-25 | 2016-06-08 | 山西振华创新科技有限公司 | Automobile exhaust purifier |
-
2016
- 2016-11-10 CN CN201610989355.7A patent/CN106523098A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4205458A1 (en) * | 1992-02-22 | 1993-08-26 | Bosch Gmbh Robert | MUFFLERS FOR BLOWERS |
| US5285640A (en) * | 1992-07-21 | 1994-02-15 | Olivo John R | Integrated post-engine emissions heater, catalytic converter and muffler |
| CN201326446Y (en) * | 2008-09-08 | 2009-10-14 | 奇瑞汽车股份有限公司 | Novel three-way catalyst carrier |
| CN202431342U (en) * | 2011-12-20 | 2012-09-12 | 郑州精益达汽车零部件有限公司 | Three-way catalytic converter for vehicle |
| CN203796372U (en) * | 2013-10-24 | 2014-08-27 | 洛阳市华宝非金属材料有限公司 | Three-way catalyst carrier structure |
| CN204511591U (en) * | 2015-01-29 | 2015-07-29 | 辽宁石油化工大学 | A kind of coupled mode automobile three-way catalysts |
| CN105649717A (en) * | 2016-01-25 | 2016-06-08 | 山西振华创新科技有限公司 | Automobile exhaust purifier |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |