CN209179853U - A kind of air inlet end-cap assembly and after-treatment system - Google Patents
A kind of air inlet end-cap assembly and after-treatment system Download PDFInfo
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- CN209179853U CN209179853U CN201821623634.2U CN201821623634U CN209179853U CN 209179853 U CN209179853 U CN 209179853U CN 201821623634 U CN201821623634 U CN 201821623634U CN 209179853 U CN209179853 U CN 209179853U
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- air inlet
- inlet end
- cap
- treatment system
- end cap
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Abstract
A kind of air inlet end-cap assembly that this programme provides, front apron connect with air inlet end cap and forms closed containing cavity, one end of air inlet pipe exposes to front apron and the other end is connect with air inlet end cap, by uniformly opening up several through-holes on air inlet tube wall, the flow uniformity of tail gas can be effectively improved, guarantee that air-flow by that can be uniformly distributed in DOC catalyst end face after air inlet pipe, improves the transformation efficiency of gas.This programme additionally provides a kind of after-treatment system with above-mentioned air inlet end-cap assembly.
Description
Technical field
The utility model relates to after-treatment system technical field, in particular to a kind of air inlet end-cap assembly and post-processing system
System.
Background technique
Diesel engine DOC-DPF-SCR assembly, that is, oxidation catalyzer, diesel particulate trap and selective catalytic reduction system operating
Set, handled for the tail gas to diesel engine.
For the prior art, Medium or severe type diesel applications Yu Guoliu stage box post-processing exploitation, to meet environmental protection row
The requirement of performance, endurance quality and mating space is put, after-treatment system need to be upgraded.DOC-DPF-SCR device mainly by
Air inlet end-cap assembly, exhaust end cover component, catalysis reaction component, housing unit, bracket component, harness-integrated six part composition.
Currently, air inlet end-cap assembly intake pipe is directly arranged on drive end bearing bracket, tail gas circulation is poor, and gas is (especially
It is hydrocarbon HC) transformation efficiency is poor.
In addition, prior art realizes the integrated arrangement to DOC-DPF, SCR and urea mixer, urea mixing
Afterwards, SCR divides two-way to arrange, reduces lengthwise dimension.Enter DOC-DPF unit after body side air inlet, completes oxidation and urge
Change and granule capturing.Air-flow enters mixer by connecting blanking cover, while spraying urea, and urea is spraying uniformly to be mixed with exhaust gas.
Uniformly mixed mixed gas completes the catalyzed conversion to oxynitrides (NOX) by two-way SCR.Eventually by exhaust tail
Gas is discharged in pipe.The arrangement of each component on DOC-DPF-SCR device limits the width of vehicle package size, short transverse
Size is larger, it is difficult to meet more mating demands.
Therefore, how to make gas circulation in air inlet end-cap assembly be evenly distributed, improve gas transformation efficiency, be at this stage
Field problem urgently to be resolved.
Utility model content
In view of this, can effectively promote inlet end the purpose of this utility model is to provide a kind of air inlet end-cap assembly
Gas flow uniformity in cap assemblies.In addition, the another object of the utility model is that providing one kind has above-mentioned air inlet end cap
The after-treatment system of component.
To achieve the above object, the utility model provides the following technical solutions:
A kind of air inlet end-cap assembly, including air inlet pipe and air inlet end cap, further include be arranged on front side of the air inlet end cap and
The air inlet end cap heat shield and heat insulation foam fitted closely with the inlet end lid, the front apron connect shape with the air inlet end cap
At closed containing cavity, on the air inlet end cap heat shield, the heat insulation foam, the air inlet end cap and the front apron relative position
Equipped with the through-hole for being inserted into the air inlet pipe, one end of the air inlet pipe expose to the front apron and the other end and it is described into
The connection of gas end cap, the air inlet pipe are uniformly provided with several through-holes on the part in the closed containing cavity.
Preferably, in above-mentioned air inlet end-cap assembly, the air inlet pipe respectively with the air inlet end cap and the front apron
It is welded to connect.
Preferably, in above-mentioned air inlet end-cap assembly, heat insulation foam is additionally provided on the inside of the air inlet end cap heat shield.
Preferably, in above-mentioned air inlet end-cap assembly, the air inlet pipe is offered in the junction with the air inlet end cap
Notch.
A kind of after-treatment system, including air inlet end-cap assembly, exhaust end cover component, catalysis reaction component, housing unit, branch
Frame component and harness-integrated, the air inlet end-cap assembly are above-mentioned air inlet end-cap assembly.
Preferably, in above-mentioned after-treatment system, the exhaust end cover component includes that sequentially connected exhaust end cover is heat-insulated
Cover, heat insulation foam and exhaust end cover, the outer rim of the exhaust end cover are provided with flange.
Preferably, in above-mentioned after-treatment system, the housing unit include sequentially connected shell, shell heat insulation foam,
Shell heat shield and heat shield mounting bracket.
Preferably, in above-mentioned after-treatment system, described harness-integrated one end be provided with respectively with exhaust temperature sensor, nitrogen
The adapter plug and the other end that lambda sensor, differential pressure pickup and urea nozzle connect are provided with to converge for integrating all signals
Total total plug, total plug are docked with overall wire sheaves.
Preferably, in above-mentioned after-treatment system, the differential pressure pickup includes that pressure difference takes air pipe, and the pressure difference takes gas
Pipeline uses tilt layout.
Preferably, in above-mentioned after-treatment system, the bracket component includes the vehicle connecting plate being successively welded to connect, consolidates
Fixed rack, mounting blocks and installation nut seat.
As can be seen from the above technical solutions, a kind of air inlet end-cap assembly that this programme provides, front apron and air inlet end cap
Closed containing cavity is connected and is formed, one end of air inlet pipe exposes to front apron and the other end is connect with air inlet end cap, passes through air inlet pipe
Several through-holes are uniformly opened up on tube wall, can effectively improve the flow uniformity of tail gas, and guaranteeing can after air-flow passes through air inlet pipe
It is uniformly distributed in DOC catalyst end face, improves the transformation efficiency of gas.This programme additionally provides a kind of with above-mentioned air inlet end cap
The after-treatment system of component.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it is clear that, the accompanying drawings in the following description is only
The embodiments of the present invention without creative efforts, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of after-treatment system disclosed in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of air inlet end-cap assembly disclosed in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of air inlet pipe disclosed in Fig. 2；
Fig. 4 is the structural perspective of air inlet end-cap assembly disclosed in an embodiment of the present invention；
Fig. 5 is the schematic diagram of a variety of air inlet modes disclosed in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of exhaust end cover component disclosed in an embodiment of the present invention；
Fig. 7 is harness-integrated structural schematic diagram disclosed in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram that pressure difference disclosed in an embodiment of the present invention takes air pipe；
Fig. 9 is the structural schematic diagram of bracket component disclosed in an embodiment of the present invention.
In figure:
1- air inlet end-cap assembly；2- exhaust end cover component；3- is catalyzed reaction component；4- housing unit；5- bracket component；6-
It is harness-integrated；
11- inlet flange；12- air intake port cover；13- air inlet pipe；131- notch；132- welding position；14- air inlet end cap is heat-insulated
Cover；15- heat insulation foam；16- air inlet end cap；
21- exhaust end cover heat shield；22- heat insulation foam；23- exhaust end cover；
51- vehicle connecting plate；52- fixes bracket；53- mounting blocks；54- installs nut seat；
61- adapter plug；The total plug of 62-；63- pressure difference takes air pipe.
Specific embodiment
In view of this, the core of the utility model is to provide a kind of air inlet end-cap assembly, inlet end can be effectively promoted
Gas flow uniformity in cap assemblies.In addition, the another object of the utility model is that providing one kind has above-mentioned air inlet end cap
The after-treatment system of component.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
As shown in figs. 1-9, the utility model discloses a kind of air inlet end-cap assemblies, including air inlet pipe 13 and inlet end
Lid 16 further includes the front side of air inlet end cap 16 being arranged in and the air inlet end cap heat shield 14 that fits closely with air inlet end cap 16 and heat-insulated
Cotton 15, front apron connect to form closed containing cavity with air inlet end cap 16, air inlet end cap heat shield 14, heat insulation foam 15, air inlet end cap 16
And front apron relative position is equipped with through-hole for being inserted into air inlet pipe 13, one end of air inlet pipe 13 exposes to front apron and another
One end is connect with air inlet end cap 16, and air inlet pipe 13 is uniformly provided with several through-holes on the part in closed containing cavity.
It should be noted that air inlet pipe 13 is uniformly provided with several through-holes, air inlet pipe pipe on the part in closed containing cavity
360 ° of aperture can increase percent of pass of the surrounding air-flow in all directions, lift gas flow uniformity on wall.
A kind of air inlet end-cap assembly that this programme provides, front apron connect with air inlet end cap 16 and are formed closed containing cavity, into
One end of tracheae 13 exposes to front apron and the other end is connect with air inlet end cap 16, if by uniformly opening up on 13 tube wall of air inlet pipe
Dry through-hole can effectively improve the flow uniformity of tail gas, and guaranteeing can be equal in DOC catalyst end face after air-flow passes through air inlet pipe
Even distribution improves the transformation efficiency of gas.
In a particular embodiment, air inlet pipe 13 is welded to connect with air inlet end cap 16 and front apron respectively, strong with enhancing connection
Degree.Welding position 132 avoids the occurrence of cantilever beam structure, mentions as shown in figure 4, welding at air inlet pipe 13 and front apron, air inlet end cap two
High air inlet intensity prevents product from occurring the failure of air inlet cracking in the application of market.
As shown in figure 5, the different location punching on drive end bearing bracket, air inlet pipe 13 is directly arranged on drive end bearing bracket, is realized
The mating requirement of a variety of intake methods such as preceding air inlet, side air inlet, upper air.Meanwhile only on drive end bearing bracket different location punching,
Arrange air inlet tube assembly scheme, share a kind of drive end bearing bracket, effectively reduce mold opening cost, meet different automobile types to post-process into
The requirement of port configurations.
In order to further increase heat insulation, the inside of air inlet end cap heat shield 14 is additionally provided with heat insulation foam 15.
Preferably, inlet flange 11 and air intake port cover 12 are additionally provided on the arrival end of air inlet pipe 13.
In further embodiment, air inlet pipe 13 offers notch 131 in the junction with air inlet end cap 16.
Air inlet pipe 13 has fluting to design in the junction with air inlet end cap 16, i.e. bottom, after air-flow enters after-treatment system,
On the one hand by 360 ° of apertures in air inlet mouth of pipe, the flow uniformity of tail gas is improved, on the other hand passes through air inlet mouth of pipe bottom
Slot adjustable airflow direction, guarantee air-flow by that can be uniformly distributed in DOC catalyst end face after air inlet pipe, raising
The transformation efficiency of HC.
In addition, disclosed herein as well is a kind of after-treatment system, including air inlet end-cap assembly 1, exhaust end cover component 2, urge
Change reaction component 3, housing unit 4, bracket component 5, harness-integrated 6, and the air inlet end-cap assembly is to disclose in above-described embodiment
Air inlet end-cap assembly also therefore there are all technologies in above-described embodiment with the after-treatment system of the air inlet end-cap assembly
Effect, this is no longer going to repeat them.
Motor exhaust enters after-treatment system by the air inlet of air inlet end-cap assembly, followed by catalysis reaction component
Urea, DOC sub-unit, DPF sub-unit, mixer and two-way SCR sub-unit, after-treatment system is finally flowed out by tailpipe
Assembly.
Based on the above technical solution, exhaust end cover component 2 include sequentially connected exhaust end cover heat shield 21, every
Hot cotton 22 and exhaust end cover 23, the outer rim of exhaust end cover 23 are provided with flange.
The structure of exhaust end cover component 2, as shown in fig. 6, including exhaust end cover heat shield 21, heat insulation foam 22 and exhaust end
This three parts of lid 23.
It should be noted that 23 edge of exhaust end cover is designed using flanging, easy to exhaust end cap and rear baffle are welded.Every
Hot cotton 22 can isolate the high temperature of motor exhaust, avoid the harness being arranged on rear end cap by high temperature roastingization.
Specifically, exhaust end cover heat shield and exhaust end cover are designed using die mould, for arranging that NOx sensor SCU is installed
Bracket and differential pressure pickup bracket, die mould are diagonally arranged symmetrically, and urea nozzle is arranged on the diagonal, are adapted to difference
The demand of the arranged direction of after-treatment system.
Based on the above technical solution, housing unit 4 include sequentially connected shell, shell heat insulation foam, shell every
Heat cover and heat shield mounting bracket.Housing unit is by shell, shell heat insulation foam, shell heat shield and heat shield mounting bracket assembly
Composition.Shell heat insulation foam can be effectively isolated the high temperature of after-treatment system internal engine tail gas, reduce tank surface temperature, prevent
The harness of tank surface is only arranged in by high temperature roastingization.
In further embodiment, harness-integrated 6 one end be provided with respectively with exhaust temperature sensor, nitrogen oxide sensor, pressure
The adapter plug 61 and the other end that gap sensor is connected with urea nozzle be provided with for by all signals it is integrated summarize always connect
Plug 62, total plug 62 are docked with overall wire sheaves.
As shown in fig. 7, one big harness-integrated 6 is disposed on after-treatment system, harness-integrated 6 one end and four row's temperature
Sensor, a nitrogen oxide sensor, a differential pressure pickup, urea nozzle adapter plug 61 to inserting, other end setting
Have for all signals to be integrated the total plug 62 summarized, total plug 62, which integrates these signals, is aggregated into one big connect
Plug and overall wire sheaves are to slotting.It can prevent vehicle factor when after-treatment system is installed each wiring harness connector wrong in this way.
The sensor and nozzle of each functional unit are integrated in jointly on post-processing cabinet, are realized the assembly supply of material, are reduced and match
The assembly complexity of set.Integrated form assembly both facilitates installation mating, is also beneficial to improve the temperature of each catalyst unit, promotes each function
The transformation efficiency of energy unit, is effectively reduced the discharge of exhaust emission.
Further, differential pressure pickup includes that pressure difference takes air pipe, and pressure difference takes air pipe using tilt layout.
If the condensed water in motor exhaust flows into differential pressure pickup, it will affect its performance, to solve this problem, will press
Difference takes air pipe using being in tilted layout, and prevents condensed water from flowing into differential pressure pickup, as shown in Figure 8.
In a particular embodiment, bracket component 5 includes the vehicle connecting plate 51 being successively welded to connect, fixed bracket 52, peace
Fill block 53 and installation nut seat 54.
After-treatment system is using lifting monoblock type mounting means, by bolt by after-treatment system vehicle mounting bracket and whole
Vehicle carriage is fixedly connected.After-treatment system mounting support structure, as shown in figure 9, including vehicle connecting plate 51, fixed bracket
52, mounting blocks 53 and installation nut seat 54.The front/rear baffle of fixed bracket and after-treatment system is welded, by front/rear gear
The intensity vehicle connecting plate that the intensity of plate improves vehicle mounting bracket is welded with vehicle mounting bracket, guarantees mounting bracket
Intensity.Welding installation nut 54 on mounting blocks 53 is welded on fixed bracket 52 for installing after-treatment system installation bolt.
This programme is intended to design a kind of compact-sized, function admirable general box post-processing of integrated form DOC-DPF-SCR
System structure meets the discharge and endurance quality of medium and heavy-duty engines, meets the needs of vehicle mating space, to meet Europe
VI/ state VI discharges upgrade requirement.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of air inlet end-cap assembly, including front apron, air inlet pipe (13) and air inlet end cap (16), which is characterized in that further include
Be arranged on front side of the air inlet end cap (16) and the air inlet end cap heat shield (14) that is fitted closely with the air inlet end cap (16) and
Heat insulation foam (15), the front apron connect to form closed containing cavity with the air inlet end cap (16), the air inlet end cap heat shield
(14), the heat insulation foam (15), the air inlet end cap (16) and the front apron relative position are equipped with described for being inserted into
The through-hole of air inlet pipe (13), one end of the air inlet pipe (13) expose to the front apron and the other end and the air inlet end cap
(16) it connects, the air inlet pipe (13) is uniformly provided with several through-holes on the part in the closed containing cavity.
2. air inlet end-cap assembly according to claim 1, which is characterized in that the air inlet pipe (13) respectively with the air inlet
End cap (16) and the front apron are welded to connect.
3. air inlet end-cap assembly according to claim 1, which is characterized in that the inside of the air inlet end cap heat shield (14)
It is additionally provided with heat insulation foam (15).
4. air inlet end-cap assembly according to claim 1, which is characterized in that the air inlet pipe (13) with the inlet end
The junction of lid (16) offers notch (131).
5. a kind of after-treatment system, including air inlet end-cap assembly (1), exhaust end cover component (2), catalysis reaction component (3), shell
Component (4), bracket component (5) and harness-integrated (6), which is characterized in that the air inlet end-cap assembly (1) is such as claim 1-
4 described in any item air inlet end-cap assemblies (1).
6. after-treatment system according to claim 5, which is characterized in that the exhaust end cover component (2) includes successively connecting
Exhaust end cover heat shield (21), heat insulation foam (22) and the exhaust end cover (23) connect, the outer rim of the exhaust end cover (23) are provided with
Flange.
7. after-treatment system according to claim 5, which is characterized in that the housing unit (4) includes sequentially connected
Shell, shell heat insulation foam, shell heat shield and heat shield mounting bracket.
8. after-treatment system according to claim 5, which is characterized in that the one end of harness-integrated (6) is provided with point
Adapter plug (61) and the other end setting not connect with exhaust temperature sensor, nitrogen oxide sensor, differential pressure pickup and urea nozzle
Have for by the integrated total plug (62) summarized of all signals, total plug (62) to be docked with overall wire sheaves.
9. after-treatment system according to claim 8, which is characterized in that the differential pressure pickup includes that pressure difference takes air pipe
(63), the pressure difference takes air pipe (63) using tilt layout.
10. after-treatment system according to claim 5, which is characterized in that the bracket component (5) includes that successively welding connects
Vehicle connecting plate (51), fixed bracket (52), mounting blocks (53) and installation nut seat (54) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821623634.2U CN209179853U (en) | 2018-09-30 | 2018-09-30 | A kind of air inlet end-cap assembly and after-treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821623634.2U CN209179853U (en) | 2018-09-30 | 2018-09-30 | A kind of air inlet end-cap assembly and after-treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209179853U true CN209179853U (en) | 2019-07-30 |
Family
ID=67360780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821623634.2U Active CN209179853U (en) | 2018-09-30 | 2018-09-30 | A kind of air inlet end-cap assembly and after-treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209179853U (en) |
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2018
- 2018-09-30 CN CN201821623634.2U patent/CN209179853U/en active Active
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