CN109209571A - A kind of after-treatment device - Google Patents
A kind of after-treatment device Download PDFInfo
- Publication number
- CN109209571A CN109209571A CN201811367225.5A CN201811367225A CN109209571A CN 109209571 A CN109209571 A CN 109209571A CN 201811367225 A CN201811367225 A CN 201811367225A CN 109209571 A CN109209571 A CN 109209571A
- Authority
- CN
- China
- Prior art keywords
- assembly
- dpf
- flexible joint
- connecting portion
- treatment device
- 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
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- 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
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
- F01N13/1816—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
Abstract
The invention discloses a kind of after-treatment devices, including DOC assembly, flexible joint bend pipe assembly and DPF assembly, wherein: the flexible joint bend pipe assembly includes first connecting portion, flexible joint pipe and second connecting portion, the first connecting portion with the outlet side of the DOC assembly for connecting, the second connecting portion with the inlet end of the DPF for connecting, the flexible joint pipe is reticular structure made of braided steel wire, and the outer surface of the flexible joint pipe is enclosed with thermal insulation layer.Compared with prior art, the present invention by flexible joint bend pipe assembly by connecting DOC assembly with DPF assembly, it is limited to can satisfy certain vehicle arrangement spaces, needs DOC assembly and DPF assembly is arranged apart, but can guarantee particle burns in DPF assembly requirement again simultaneously.
Description
Technical field
The present invention relates to exhaust aftertreatment technical field, especially a kind of after-treatment device.
Background technique
The reality of " GB 18352.5-2013 light-duty vehicle pollutant emission limit and measurement method (Chinese V stage) "
It applies, the discharge quantitative requirement of discharge quality and granule number to particulate matter is more stringent.To meet national legislation requirement, for bavin
Oily vehicle, the after-treatment device that Automobile Enterprises generally use DOC+DPF carry out the trapping and burning of particle.DPF (diesel particulate filtering
Device) it is mainly used for the trapping of particulate matter, when particulate matter reaches certain amount, need to be burnt --- this process is known as
Regeneration.The method for burning particulate matter usually carries out oil spout, fuel oil in the 4th stroke (exhaust stroke) of engine operation
It is discharged in DOC (diesel engine oxidation catalyst) with tail gas, and burns in DOC, release heat, it then will attachment
Particulate matter on DPF burns.
Under normal circumstances, it is desirable that DOC and DPF are tightly coupled together, and after burning in DOC convenient for fuel oil in this way, heat is vertical
DPF can be passed to, the particle burning on DPF is fallen.
Existing DOC and DPF is tightly coupled form, when carrying out layout design on certain vehicles, since space limits,
It arranges infeasible.
When the particle accumulation on DPF is to certain amount, need to burn in time, if cumulative amount excessively again into
Row burning excessively easily makes carrier cracking damage due to releasing heat, leads to the increase that discharges pollutants of tail gas, pollute environment.
Summary of the invention
The object of the present invention is to provide a kind of after-treatment devices, to solve current DOC and DPF as tightly coupled post-processing shape
The technical issues of arrangement that formula is not able to satisfy certain vehicles requires.
The present invention provides a kind of after-treatment device, including DOC assembly, flexible joint bend pipe assembly and DPF assembly,
In: the flexible joint bend pipe assembly includes first connecting portion, flexible joint pipe and second connecting portion, and the first connecting portion is used for
It is connect with the outlet side of the DOC assembly, the second connecting portion with the inlet end of the DPF for connecting, the flexible joint
Pipe is reticular structure made of braided steel wire, and the outer surface of the flexible joint pipe is enclosed with thermal insulation layer.
After-treatment device as described above, wherein preferably, the DPF assembly includes carrier, shell and heat-insulated
Cover, the carrier is the column structure to form honeycomb channels, and the carrier is pressed into the shell, the carrier and described
Liner is enclosed between shell, the shell is contained in the heat shield, there is snare between the shell and the heat shield
Heat dissipating ring.
After-treatment device as described above, wherein preferably, the heat dissipating ring is aluminum alloy material.
After-treatment device as described above, wherein preferably, the heat dissipating ring includes the heat dissipation of two semicircular structures
Several zigzag boss are distributed on the outer surface of the cooling fin in piece, and the top surface of the boss is interior with the heat shield
Prepsetting gap is formed between wall surface.
After-treatment device as described above, wherein preferably, be provided with the first pressure on the inlet end of the DPF assembly
Gap sensor interface and exhaust temperature sensor interface are provided with the second differential pressure pickup interface on the outlet side of the DPF assembly.
Compared with prior art, the present invention, can by connecting DOC assembly by flexible joint bend pipe assembly with DPF assembly
It is limited to meet certain vehicle arrangement spaces, need DOC assembly and DPF assembly is arranged apart, but simultaneously again can guarantee that DPF is total
The requirement burnt at middle particle.
Detailed description of the invention
Fig. 1 is the integrally-built axonometric drawing of the present invention；
Fig. 2 is the cross-sectional view of DPF assembly.
Description of symbols: 1-DOC assembly, 2- flexible joint bend pipe assembly, 3-DPF assembly, 4- flexible joint pipe, 5- carrier,
6- shell, 7- heat shield, 8- liner, 9- heat dissipating ring, 10- cooling fin, 11- boss, 12- the first differential pressure pickup interface, 13- row
Temperature sensor interface, 14- the second differential pressure pickup interface.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, for explaining only the invention, and cannot be construed to
Limitation of the present invention.
As depicted in figs. 1 and 2, the embodiment provides a kind of after-treatment devices, including DOC assembly 1, flexible joint
Bend pipe assembly 2 and DPF assembly 3, in which: the flexible joint bend pipe assembly 2 includes first connecting portion, flexible joint pipe 4 and the
Two interconnecting pieces, for connecting with the outlet side of the DOC assembly 1, the second connecting portion is used for and institute the first connecting portion
The inlet end connection of DPF is stated, inlet end and the turbocharger outlet of the DOC assembly 1 connect, the outlet of the DPF assembly 3
End is connect with muffler, and the flexible joint pipe 4 is reticular structure made of braided steel wire, can be played and be alleviated DOC assembly 1
With the effect mutually impacted when vibrating in 3 driving process of DPF assembly, the outer surface of the flexible joint pipe 4 is enclosed with thermal insulation layer, subtracts
Few DOC assembly 1 goes out outlet side to the thermal losses between the temperature of 3 inlet end of DPF assembly.
Further, the DPF assembly 3 includes carrier 5, shell 6 and heat shield 7, and the carrier 5 is to form honeycomb
The column structure in channel, the carrier 5 are pressed into the shell 6, are enclosed with liner between the carrier 5 and the shell 6
8, the shell 6 is contained in the heat shield 7, and snare has heat dissipating ring 9 between the shell 6 and the heat shield 7.Heat dissipating ring
9 when the carrier 5 of DPF assembly 3 runs up to more particle burning, can evacuate excessive heat quickly, prevent the mistake of carrier 5
Thermal cracking, and then avoid the increase that discharges pollutants in tail gas.
Further, the heat dissipating ring 9 is aluminum alloy material, and in favor of rapid cooling, the particle for expanding DPF assembly 3 is caught
Collect quantity, avoids leading to the cracking of carrier 5 in DPF assembly 3 because disposable particle excessively burns, while driver can also be reduced
Carry out the number of triggering particle burning manually.
Further, the heat dissipating ring 9 includes the cooling fin 10 of two semicircular structures, the faying face of two cooling fins 10
Semicircular heat shield 7 urgent by bolt and similar with two connects used bolt and shares, outside the cooling fin 10
Several zigzag boss 11 are distributed on surface, are formed between the top surface of the boss 11 and the inner wall of the heat shield 7
There is prepsetting gap, in favor of heat-insulated.
Further, the first differential pressure pickup interface 12 and exhaust temperature sensor are provided on the inlet end of the DPF assembly 3
Interface 13 is provided with the second differential pressure pickup interface 14 on the outlet side of the DPF assembly 3.
In driving process, the differential pressure pickup of the first differential pressure pickup interface 12 and the second differential pressure pickup interface 14 is fed back
When the granule number that carrier 5 in DPF assembly 3 traps reaches the signal of limit value to ECU, temperature that ECU is fed back according to exhaust temperature sensor
Degree, control fuel injector carry out suitable oil spout (in the 4th stroke of engine), and the particle in carrier 5 burn and arrange with tail gas
Out, ECU re-reads the signal that differential pressure pickup provides, and stops oil spout (in the 4th stroke of engine).
If the pressure difference signal that differential pressure pickup interface is supplied to ECU shows granule number, accumulation just reaches particle capture limit value
And when failing to be regenerated in time, the regeneration indicator light in instrument carries out flashing with amber light color and shows, if showing granule number
When accumulation reaches 1.5 times of particle capture limit value and fails to be regenerated in time, regeneration indicator light is shown with blinking red lamp, if table
When bright granule number accumulation reaches 2 times of particle capture limit value and fails to be regenerated in time, regeneration indicator light is always on aobvious with red light
Show.
When in the case where perhaps red light is always on blinking red lamp, automatic trigger or driver stop driver in vehicle driving
In the dynamic triggering DPF assembly 3 of driver when the burning of particulate matter, although at this point, the granule capturing quantity in DPF assembly 3 is limit value
1.5 times and 2 times, although the heat of release is more than the heat for release of burning when granule number is limit value, it can pass through
The conduction of heat dissipating ring 9 is evacuated quickly, it is ensured that carrier 5 will not crack because of being heated excessive.Above procedure, so that driving
The person of sailing can reduce the operation for carrying out particle burning in triggering DPF assembly 3 manually, can greatly be easy to use.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (5)
1. a kind of after-treatment device, which is characterized in that including DOC assembly, flexible joint bend pipe assembly and DPF assembly, in which: institute
Stating flexible joint bend pipe assembly includes first connecting portion, flexible joint pipe and second connecting portion, and the first connecting portion is used for and institute
The outlet side connection of DOC assembly is stated, for connecting with the inlet end of the DPF, the flexible joint pipe is the second connecting portion
The outer surface of reticular structure made of braided steel wire, the flexible joint pipe is enclosed with thermal insulation layer.
2. after-treatment device according to claim 1, it is characterised in that: the DPF assembly include carrier, shell and every
Heat cover, the carrier is the column structure to form honeycomb channels, and the carrier is pressed into the shell, the carrier and institute
It states and is enclosed with liner between shell, the shell is contained in the heat shield, snare between the shell and the heat shield
There is heat dissipating ring.
3. after-treatment device according to claim 2, it is characterised in that: the heat dissipating ring is aluminum alloy material.
4. after-treatment device according to claim 2, it is characterised in that: the heat dissipating ring includes two semicircular structures
Several zigzag boss, the top surface of the boss and the heat shield are distributed on the outer surface of the cooling fin for cooling fin
Inner wall between be formed with prepsetting gap.
5. after-treatment device according to claim 1, it is characterised in that: be provided on the inlet end of the DPF assembly
One differential pressure pickup interface and exhaust temperature sensor interface are provided with the second differential pressure pickup on the outlet side of the DPF assembly and connect
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811367225.5A CN109209571A (en) | 2018-11-16 | 2018-11-16 | A kind of after-treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811367225.5A CN109209571A (en) | 2018-11-16 | 2018-11-16 | A kind of after-treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109209571A true CN109209571A (en) | 2019-01-15 |
Family
ID=64996040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811367225.5A Pending CN109209571A (en) | 2018-11-16 | 2018-11-16 | A kind of after-treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109209571A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140026826A (en) * | 2012-08-23 | 2014-03-06 | 대동공업주식회사 | Fixing structure of exhaust gas after treatment device |
| CN103742229A (en) * | 2013-12-23 | 2014-04-23 | 柳州正菱集团有限公司 | Automobile exhaust purification device |
| CN207245824U (en) * | 2017-10-13 | 2018-04-17 | 无锡市三六九钢管有限公司 | The effective steel pipe of motor exhaust |
| CN207332994U (en) * | 2017-10-24 | 2018-05-08 | 安徽江淮汽车集团股份有限公司 | One kind exhaust pipe assembly |
| CN207377638U (en) * | 2017-10-25 | 2018-05-18 | 重庆松立机械制造有限公司 | A kind of exhaust system for motorcycle of environmental protection |
-
2018
- 2018-11-16 CN CN201811367225.5A patent/CN109209571A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140026826A (en) * | 2012-08-23 | 2014-03-06 | 대동공업주식회사 | Fixing structure of exhaust gas after treatment device |
| CN103742229A (en) * | 2013-12-23 | 2014-04-23 | 柳州正菱集团有限公司 | Automobile exhaust purification device |
| CN207245824U (en) * | 2017-10-13 | 2018-04-17 | 无锡市三六九钢管有限公司 | The effective steel pipe of motor exhaust |
| CN207332994U (en) * | 2017-10-24 | 2018-05-08 | 安徽江淮汽车集团股份有限公司 | One kind exhaust pipe assembly |
| CN207377638U (en) * | 2017-10-25 | 2018-05-18 | 重庆松立机械制造有限公司 | A kind of exhaust system for motorcycle of environmental protection |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190115 |