CN104564252B - A kind of exhaust gas from diesel vehicle after-treatment device - Google Patents
A kind of exhaust gas from diesel vehicle after-treatment device Download PDFInfo
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- CN104564252B CN104564252B CN201510017712.9A CN201510017712A CN104564252B CN 104564252 B CN104564252 B CN 104564252B CN 201510017712 A CN201510017712 A CN 201510017712A CN 104564252 B CN104564252 B CN 104564252B
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- sleeve
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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
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- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of exhaust gas from diesel vehicle after-treatment device, including sleeve, air inlet pipe, inner end cap is provided with sleeve, integral type is provided with purifier in sleeve, silencing apparatus, purifier includes carrier catalysis device, grain catcher, silencing apparatus includes hush tube, noise reduction inner end cap, hush tube is connected by noise reduction inner end cap and dividing plate with cylinder, the end of hush tube is outlet hush tube, outlet hush tube is stretched out outside sleeve to be connected with outlet end flanges, carrier catalysis device is DOC carrier catalysis devices, using ceramic honey comb as carrier, grain catcher is the pass-through type grain catchers of PF/CPF half, socket is provided with tinfoil paper insulating pipe with corrugation insulating layer or stainless steel double thermal insulation pipe in the air inlet pipe.The present invention is based on actual market and ecological requirements, has the competitive advantages such as simple in construction, reasonable in design, easy for installation, integrated cost is low.Can solve emission pollution problem of the diesel vehicle under idling or underload, frequent starting, reach state four, the discharge standard of state five.
Description
Technical field
The invention belongs to exhaust gas from diesel vehicle processing technology field, and in particular to a kind of exhaust gas from diesel vehicle after-treatment device.
Background technology
With the continuous improvement of environmental requirement, state motor vehicle pollutant emission standard is also more strict, fourth stage with
WHTC cold start-ups and thermal starting the experiment emission limit in the 5th stage are as shown in table 1, under state IV and state V ESC and ETC experiment
Exhaust emissions requirement it is as shown in table 2.
The WHTC cold start-ups of table 1 and thermal starting experiment emission limit
The ESC of table 2 and ETC experiment emission requests
The discharge standard of state four is national fourth stage motor vehicle emission standard, is led for exhaust gas from diesel vehicle processing
Egr system+the DOC or egr system+DOC+POC technology paths to be used.DOC is oxidation catalyst, mainly for the treatment of HC,
SOF particles in CO, PM, combustion temperature is normally opened more than 320 degree；POC is pass-through type grain catcher, is mainly used in catching PM
In SOOT particles, and at a certain temperature, continuous passive regeneration is carried out to it, due to its structure and regeneration mechanism, low speed or
Its PM efficiency is even lower in 40%-50% or so under idling, therefore can not ensure the emission compliance under the operating mode.
The discharge standard of state four is after on July 1st, 2014 formally implements, and all kinds of problems are constantly sudden and violent in specific implementation process
Dew, wherein main in the case of idling, frequent starting, the tail gas of discharge can not reach after exhaust manifold in engine
Reaction temperature to required for DOC carriers, POC carriers can not also be regenerated, cause vehicle exhaust harmful components part or
It is not react completely, causes to occur discharging exceeded and over-emitting black exhaust phenomenon in the case of idling, frequent starting.
The content of the invention
For problems of the prior art, it is an object of the invention to design to provide a kind of exhaust gas from diesel vehicle post processing
Device, i.e. DOC+PF/CPF.PF without the pass-through type grain catcher of catalyst half, is mainly used in catching SOOT in PM
Grain, and continuous passive regeneration is carried out to it at a certain temperature, PM efficiency is in 50%-70%；CPF is half pass-through type with catalyst
Grain catcher, it is mainly used in catching the SOOT particles in PM, efficiency, can continuous passive regeneration in 50%-80%.
A kind of described exhaust gas from diesel vehicle after-treatment device, including sleeve, air inlet pipe, air inlet pipe pass through flange and sleeve phase
Even, it is provided with inner end cap in sleeve, it is characterised in that integral type is provided with purifier and silencing apparatus in the sleeve, described
Purifier includes carrier catalysis device, grain catcher, and the silencing apparatus includes hush tube, is arranged on hush tube inlet end
Noise reduction inner end cap, the hush tube are connected by noise reduction inner end cap and dividing plate with cylinder, and the end of hush tube is outlet hush tube
Or escape pipe, the outlet hush tube or escape pipe are stretched out outside sleeve to be connected with outlet end flanges, and the carrier catalysis device is DOC
Carrier catalysis device, using ceramic honey comb as carrier, interior painting of the painting containing active component Pt or Pt/Pd, aluminum oxide, molecular sieve and auxiliary agent
Layer, the grain catcher are the pass-through type grain catchers of PF/CPF half, are socketed in the air inlet pipe and are provided with insulating tube.
Described a kind of exhaust gas from diesel vehicle after-treatment device, it is characterised in that the grain catcher inlet end duct is complete
Open, the two neighboring hole of one hole standard-sized sheet of duct one closing in outlet side.
A kind of described exhaust gas from diesel vehicle after-treatment device, it is characterised in that the carrier catalysis device and grain catcher it
Between be spaced 15~25mm, and inflated insert is equipped between sleeve lining.
Described a kind of exhaust gas from diesel vehicle after-treatment device, it is characterised in that socket is provided with button-shaped in the air inlet pipe
Coat the tinfoil paper insulating pipe with corrugation insulating layer of connection.
Described a kind of exhaust gas from diesel vehicle after-treatment device, it is characterised in that the air inlet pipe, outlet hush tube or outlet
Differential pressure pickup joint is provided with pipe.
Existing DPF filters are wall-flow filters, in two neighboring passage, select the either end in both ends to block up
Plug, so as to force waste gas to realize the trapping to particulate matter by porous wall.DPF in design will consider that one can be born
The soot of fixed load rate.If the amount of soot of accumulation urges heavy load ability more than it, the particulate matter inside DPF can produce to air-flow
Hinder, so that pressure drop increases, it is completely plugged to ultimately result in DPF, therefore DPF system must provide reliable regeneration strategy
To ensure that above mentioned problem will not occur.DPF can reach more than 90% to the filter efficiency of particulate matter, but dpf regeneration and control
Strategy is more complicated, and demarcation construction cycle length, development cost are high, and have the ability to carry out at present the company of DPF system exploitation compared with
It is few.
POC filter layer generally use wire netting is formed, and its filtration channel is flow through structure, and into crimp shape.This
Either kind of a structure causes waste gas to be moved ahead in flow process along the passage of fold, or need through filter layer.Filter layer is
For arrested particles.POC regeneration is typically what is completed under normal riving condition, when the exhaust of engine reaches a constant temperature
When spending, the NO in waste gas2Passive regeneration can be realized with carbon soot particles reaction.But open when engine low-idle, underload or frequently
When dynamic, delivery temperature does not reach passive regeneration temperature requirement, can produce soot blowing and POC ablation phenomens.
Compared with DPF and POC, PF receives because the special construction of carrier, carbon black are collected in the runner of closing with ash content
The carbon black collected can be only burned off, and without blowing out, avoid POC " soot blowing " phenomenons caused in use.Simultaneously
Because the passage of PF filters about 50% is flow type, bypass flow channel ensures that pressure change is gentle during carbon black loaded, even if carbon black is received
Mass flow pathway is completely plugged, and the pressure loss can only increase by 50%, and be not to be in the presence of it is completely plugged, as long as enter it is passive again
Raw Process window, carbon black can be completely burned off, so as to realize PF continuous passive regeneration process.
The present invention is based on actual market and ecological requirements, has simple in construction, reasonable in design, easy for installation, integrated cost
Low competitive advantage.Can solve emission pollution problem of the diesel vehicle under idling or underload, frequent starting, reach state four, state
Five discharge standards.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention (DOC+PF+ noise elimination structures)；
Fig. 2 is Fig. 1 axial directions cross section structure diagram；
Fig. 3 is the structural representation (DOC+PF) of the invention without noise elimination structure；
Fig. 4 is Fig. 3 axial directions cross section structure diagram；
Fig. 5 is carrier catalysis device inlet end structural representation；
Fig. 6 is grain catcher outlet side structural representation；
In figure：1- insulating tubes, 2- flanges, 3- air inlet pipe, 4- sleeves, 5- differential pressure pickup joints, 6- outlet end flanges, 7-
Inner end cap, 8- inflated inserts, 9- carrier catalysis devices, 10- grain catchers, 11- noise reduction inner end caps, 12- hush tubes, 13- dividing plates,
14- outlet hush tubes, 15- escape pipes.
Embodiment
The present invention is further illustrated below in conjunction with Figure of description.
As shown in figures 1 to 6, a kind of exhaust gas from diesel vehicle after-treatment device of the present invention, including sleeve 4, air inlet pipe 3, air inlet pipe 3
It is connected by flange 2 with sleeve 4, inner end cap 7 is provided with sleeve 4, integral type is provided with purifier and noise elimination dress in sleeve 4
Put, purifier includes carrier catalysis device 9, grain catcher 10, between carrier catalysis device 9 and grain catcher 10 and sleeve 4
It is equipped with inflated insert 8；Silencing apparatus includes hush tube 12, is arranged on the noise reduction inner end cap 11 of hush tube inlet end, disappears
Sound pipe 12 is connected by noise reduction inner end cap 11 and dividing plate 13 with sleeve 4, and the end of hush tube 12 is outlet hush tube 14 or outlet
Pipe, and outlet hush tube 14 or escape pipe 15 stretch out that sleeve 4 is outer and outlet end flanges 6, air inlet pipe 3, outlet hush tube 14 or
Differential pressure pickup joint 5 is provided with escape pipe 15；Silencing apparatus built in sleeve 4 greatly reduces packaging cost and installation is empty
Between, while it is spinning structure that the present invention, which changes traditional end cover structure, and heavy caliber spinning process is used during the manufacturing, is made
Packaging cost is greatly lowered.Carrier catalysis device 9 is DOC carrier catalysis devices, and using ceramic honey comb as carrier, interior painting contains activearm
Divide the coating of Pt or Pt/Pd, aluminum oxide, molecular sieve and auxiliary agent, oxidable CO and HC, while a part of NO is oxidized to NO2, when
After reaching certain temperature in grain catcher 10, NO2Reacted with carbon particle, the carbon particle in grain catcher 10 will be trapped in
Burn-up, grain catcher 10 is set to carry out passive regeneration.Grain catcher is the pass-through type grain catchers of PF/CPF half, is specially
The grain inlet end duct standard-sized sheet of trap 10, the two neighboring hole of one hole standard-sized sheet of duct one closing in outlet side, when exhaust airstream passes through PF,
Carbon soot particles are trapped within the blind bore road of outlet side, reach the effect of filtration of particulate matters.Socket is provided with knob in air inlet pipe 3
The tinfoil paper insulating pipe with corrugation insulating layer 1 of button cladding connection.
Before using EGR+DOC+PF (CPF) technology path, the former row of engine must be claimed first, the former row's indexs of PM
Must not be higher than 0.076g/kwh, DOC carrier catalysis devices technology should possess completely sufficiently catalytic oxidation HC CO SOF (total PM's
60%) ability, the pass-through type grain catchers of PF/CPF half should be higher than that 50% to SOOT granule capturing powers of regeneration.Tinfoil paper ripple is incubated
Pipe 1 connects engine and after-treatment device, is tied up using button-shaped bag, dismounting is convenient, can arbitrarily be adjusted according to different length, stainless
Steel double thermal insulation pipe has the effect that heat-insulating property is splendid, and service life is grown.Verify through lot of experiments, protected using tinfoil paper bellows
Temperature or the structure type using stainless steel double thermal insulation pipe, average mitron channel temp loss is only 10 degree or so, is advantageous to arrange
Gas is incubated.Meanwhile the device is different from metal POC packaged types, metal POC encapsulation directly contacts with cylinder, between do not serve as a contrast
Pad carries out insulation heat accumulation, and is unfavorable for the safety after regeneration.This kind of device has taken into full account this risk, in design from storage
Heat, insulation, safety and cost consideration, 15~25mm is spaced between grain catcher 10 and carrier catalysis device 9, is preventing carrier
Between while rub, moreover it is possible to solve the problems, such as plugging particle trap, solve that after blockage problem back pressure can also be reduced
The problem of too high, the carrier catalysis device 9 in sleeve 4 are made up, this is to prevent with the indent between grain catcher of spinning
Carrier can be in contact in long-term operation, and expansion lining is set between grain catcher 10 and carrier catalysis device 9 and sleeve lining
Pad 8 replaces non-intumescent mat, after packaging, pre-processed to inflated insert 8, makes it ensure necessarily to encapsulate power, reaches heat accumulation
Ground, insulation, heat-insulated and safe effect, while the cost of this kind pad is only 1/10th of non-intumescent mat.
The measure of summary so that vehicle, can be on 30 seconds left sides under idling formula operating mode or speed operation or frequent starting
It is right so that waste gas into air inlet pipe 3 reach inner end cap 7 of sleeve 4 when, its temperature reaches more than 320 °, wherein, inner end cap
7 use double-decker, favourable insulation, different engines, due to the difference of power, rotating speed, may slightly have difference so that in waste gas
HC CO SOF and DOC carrier catalysis devices chemically react, while discharge substantial amounts of heat, rise to the temperature short time
More than 400 degree, be advantageous to the needs that rear class PF effectively carries out granules regeneration.When the temperature that the transmission of prime DOC carrier catalysis devices comes
When degree is unable to reach initiation temperature, part coating noble metal CPF can be carried out to PF, then is advantageous to secondary response exotherm and passes through
Partial Oxidation reaction on CPF grain catchers, heating of once being jumped again to delivery temperature, by verification experimental verification,
Under identical structure, band coating CPF grain catchers lifted 30 to 70 than not band coating PF grain catchers in 5 seconds
Degree, advantageously in PF granules regeneration.Regeneration efficiency can reach more than 50% under idling or running on the lower load.According to state five
PM limit value 0.02g/kwh and DOC does not surpass to SOF transformation efficiency, SOF and SOOT accounting as long as engine original arranges PM values
0.076g/kwh, the practicable state four of the program upgrade the requirement of state five.
Differential pressure pickup joint 5 then coordinates vehicle OBD to have use, when exhaust back pressure is more than a threshold value（Vehicle exhaust system
Back pressure loss of uniting must not be higher than 2%, or post processing assembly back pressure must not be higher than 25Kpa）, such as it is higher than limiting design value, then OBD system
Alarm, Engine ECU are implemented limit and turned round, and notify driver and conductor to overhaul post processing.The device enters in purification silencing structure
Row is overall to be considered, by DOC PF back pressure loss consider in the lump together with noise elimination structure, greatly reduce packaging cost and installation be empty
Between, as shown in Figure 1.Simultaneously on manufacturing process, heavy caliber spinning process is realized, 160mm product is less than to diameter,
Cylinder spinning process can be used.Traditional end cap technique is changed, using spinning structure, only packaging cost can decline five/
One.By taking discharge capacity 3.0L engines as an example, the device manufacturing price is can be controlled within 1500 yuan/set, is tied relative to DOC+POC
Structure, cost can decline 15%.
Demand such as is arranged according to vehicle chassis, it is single to use DOC+PF integral type packaging technologies, then compared with this kind of purification silencing one
The structure of body is more simple, and integrated cost can be lower, as shown in Figure 4.
Structure of the present invention is through finite element analysis, and its carrier flow uniformity coefficient is more than 0.9, and carrier eccentricity is less than 0.6,
Flow velocity is more than 100m/s at lambda sensor, and overall presure drop is less than 25KPa.
Claims (1)
1. a kind of exhaust gas from diesel vehicle after-treatment device, including sleeve (4), air inlet pipe (3), air inlet pipe passes through flange（2）With sleeve
It is connected, inner end cap is provided with sleeve（7）, it is characterised in that the sleeve（4）Interior integral type is provided with purifier and noise elimination
Device, the purifier include carrier catalysis device（9）, grain catcher（10）, the silencing apparatus includes hush tube（12）、
It is arranged on hush tube（12）The noise reduction inner end cap of inlet end（11）, the hush tube（12）Pass through noise reduction inner end cap（11）And dividing plate
（13）It is connected with cylinder, the end of hush tube is outlet hush tube（14）Or escape pipe, the outlet hush tube（14）Or outlet
Pipe（15）Stretch out sleeve（4）Outside with outlet end flanges（6）It is connected, the carrier catalysis device（9）For DOC carrier catalysis devices, with honeybee
Nest ceramics are carrier, interior coating of the painting containing active component Pt or Pt/Pd, aluminum oxide, molecular sieve and auxiliary agent, the granule capturing
Device（10）For the half pass-through type grain catcher without the pass-through type grain catcher of catalyst half or with catalyst, the particle is caught
Storage（10）Inlet end duct standard-sized sheet, the two neighboring hole of one hole standard-sized sheet of duct one closing in outlet side, the carrier catalysis device（9）With
Grain catcher（10）Between be spaced 15~25mm, and and sleeve（4）Inflated insert is equipped between inwall（8）；It is described
Air inlet pipe（3）Upper socket is provided with the tinfoil paper insulating pipe with corrugation insulating layer of button-shaped cladding connection（1）；The air inlet pipe（3）, outlet eliminate the noise
Pipe（14）Or escape pipe（15）On be provided with differential pressure pickup joint（5）；Differential pressure pickup joint（5）Coordinate vehicle OBD systems
System is used, and is higher than 2% when vehicle exhaust system backpressure loses, or post processing assembly back pressure is higher than 25Kpa, then OBD system is alarmed,
Engine ECU is implemented limit and turned round, and notifies driver and conductor to overhaul post processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510017712.9A CN104564252B (en) | 2015-01-14 | 2015-01-14 | A kind of exhaust gas from diesel vehicle after-treatment device |
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| CN201510017712.9A CN104564252B (en) | 2015-01-14 | 2015-01-14 | A kind of exhaust gas from diesel vehicle after-treatment device |
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| CN104564252A CN104564252A (en) | 2015-04-29 |
| CN104564252B true CN104564252B (en) | 2017-12-15 |
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| US9976460B2 (en) | 2016-03-24 | 2018-05-22 | Caterpillar Inc. | Exhaust after-treatment assembly for engine system |
| CN105736097B (en) * | 2016-04-08 | 2018-06-22 | 重庆交通大学 | Diesel engine vent gas reclaiming clean and noise reduction set composite |
| CN105888782B (en) * | 2016-04-08 | 2018-09-04 | 重庆交通大学 | Diesel engine vent gas composite purification device |
| CN105781689B (en) * | 2016-04-08 | 2018-06-22 | 重庆交通大学 | Diesel engine vent gas compound noise-reducing device |
| CN109595058A (en) * | 2017-09-30 | 2019-04-09 | 镇江润德节能科技有限公司 | A kind of tail gas discharging pipe with tail gas treating function |
| CN109826699A (en) * | 2019-02-28 | 2019-05-31 | 武汉理工大学 | An exhaust system applied to a thermoelectric hybrid vehicle |
| CN114065560B (en) * | 2020-07-29 | 2024-06-11 | 浙江交通职业技术学院 | Device and method for detecting blockage of particle catcher |
| CN112879141B (en) * | 2021-02-26 | 2021-12-17 | 徐州徐工矿业机械有限公司 | Post-processing device for reducing smoke intensity of high-power engine of non-road mobile machinery |
| CN113447189A (en) * | 2021-06-18 | 2021-09-28 | 中自环保科技股份有限公司 | Automobile exhaust aftertreatment catalytic unit backpressure testing device and testing method |
| CN114517726B (en) * | 2022-02-17 | 2023-03-31 | 金华职业技术学院 | Motor vehicle tail gas catalytic purifier |
| CN114758641B (en) * | 2022-04-13 | 2024-11-12 | 大连理工大学 | A sound absorbing device composed of multiple honeycomb embedded honeycomb sandwich components |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3154388A (en) * | 1962-09-07 | 1964-10-27 | Universal Oil Prod Co | Converter-muffler |
| CN1360139A (en) * | 2001-11-22 | 2002-07-24 | 李树胜 | Purifying system for high power output and low-temp tail gas discharge of IC engine |
| CN102753797A (en) * | 2010-02-12 | 2012-10-24 | 洋马株式会社 | Exhaust gas purification device |
| CN102812217A (en) * | 2010-03-23 | 2012-12-05 | 洋马株式会社 | Exhaust gas purification device |
| CN103752338A (en) * | 2014-02-08 | 2014-04-30 | 无锡威孚力达催化净化器有限责任公司 | Preparation method for oxidation catalyst used for purifying diesel exhaust |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985819Y (en) * | 2006-12-13 | 2007-12-05 | 湖南威斯特汽车零配件有限公司 | Shrink mouth type ternary purifier for automobile |
| CN201297197Y (en) * | 2008-11-18 | 2009-08-26 | 湖南威斯特汽车零配件有限公司 | Automobile ternary purifier with retaining collar |
| US9757675B2 (en) * | 2013-01-29 | 2017-09-12 | Corning Incorporated | Partial wall-flow filter and method |
| CN203604019U (en) * | 2013-11-19 | 2014-05-21 | 浙江吉利汽车研究院有限公司 | Automobile three-way catalytic converter |
-
2015
- 2015-01-14 CN CN201510017712.9A patent/CN104564252B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3154388A (en) * | 1962-09-07 | 1964-10-27 | Universal Oil Prod Co | Converter-muffler |
| CN1360139A (en) * | 2001-11-22 | 2002-07-24 | 李树胜 | Purifying system for high power output and low-temp tail gas discharge of IC engine |
| CN102753797A (en) * | 2010-02-12 | 2012-10-24 | 洋马株式会社 | Exhaust gas purification device |
| CN102812217A (en) * | 2010-03-23 | 2012-12-05 | 洋马株式会社 | Exhaust gas purification device |
| CN103752338A (en) * | 2014-02-08 | 2014-04-30 | 无锡威孚力达催化净化器有限责任公司 | Preparation method for oxidation catalyst used for purifying diesel exhaust |
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