CN214304006U - U-shaped postprocessor assembly of diesel vehicle - Google Patents
U-shaped postprocessor assembly of diesel vehicle Download PDFInfo
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- CN214304006U CN214304006U CN202120373688.3U CN202120373688U CN214304006U CN 214304006 U CN214304006 U CN 214304006U CN 202120373688 U CN202120373688 U CN 202120373688U CN 214304006 U CN214304006 U CN 214304006U
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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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- 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
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Exhaust Gas After Treatment (AREA)
Abstract
In order to solve the diesel vehicle aftertreatment ware structural design unreasonable, can't satisfy above-mentioned problems such as emission standard, the utility model provides a diesel vehicle U type aftertreatment ware assembly, including being U type structural distribution and the DOC assembly that links to each other in proper order, the DPF assembly, hybrid chamber assembly and SCR ASC assembly, can dismantle through the clamp between DOC assembly and the DPF assembly and be connected, the DPF assembly, can dismantle through the clamp between SCR ASC assembly and the hybrid chamber assembly and be connected, SCR ASC assembly and DOC assembly, can dismantle fixed connection through the support assembly between the DPF assembly, DOC assembly entry end is connected with the inlet end awl, be provided with the end awl of giving vent to anger on the SCR ASC assembly exit end, overall device structural design is reasonable, make, simple to operate.
Description
Technical Field
The device belongs to the technical field of exhaust systems of diesel vehicles, and particularly relates to a U-shaped postprocessor assembly of a diesel vehicle.
Background
Along with the rapid increase of automobile output and sales volume in China, the influence on the environment is increasingly serious, and great pressure is brought to the urban air quality. Under the background, the national requirements on the automobile exhaust emission are higher and higher, the updating speed of the emission regulation is higher and higher, and the NOx, PM and PN values emitted by the vehicle are required to be further reduced. Automotive emissions are one of the main sources of nitrogen oxides and PM particulates in urban atmosphere, while the proportion of heavy commercial vehicles is increasingly prominent, accounting for over 60% of the nitrogen oxides and PM particulates emitted by automobiles. Reducing emissions from heavy commercial vehicles has become a significant contributor to vehicle emissions reduction. In order to control the pollutant emission of heavy commercial vehicles, GB 17691 "pollutant emission limit and measurement method for heavy diesel vehicles (sixth stage of china) was issued in 6.2018 in China, in which the emission standards of the nation were implemented in the urban vehicles at 7.1.2020, the emission standards of all vehicles at 7.1.7.1.2021, and some cities were implemented in advance. In order to make the diesel vehicle reach the national emission standard of six, the post-processor assembly meeting the requirements of environmental protection regulations needs to be designed.
The existing design mainly has the following problems:
firstly, the post-processor assembly can not meet the requirements of the national emission standard;
secondly, the internal structure design of the post-processor assembly is unreasonable, and the airflow distribution at the carrier inlet is uneven, so that the utilization rate of partial carriers is low, and the NOx conversion efficiency is influenced;
thirdly, the internal temperature loss of the post-processor assembly is large, the reaction temperature (more than or equal to 250 ℃) required by the pollutants cannot be reached, the conversion efficiency is low, and the pollutant emission exceeds the standard;
fourthly, the post-processor assembly can not trap PM particles;
fifthly, gas inside the post-processor assembly and urea cannot be uniformly mixed, so that the conversion efficiency is influenced;
sixthly, the packaging units in the post-processor assembly cannot be disassembled, and the whole post-processor can only be replaced when a certain packaging unit is damaged, so that the maintenance cost of the whole vehicle is high;
seventhly, the post processor assembly is not flexible enough in structure, cannot meet the requirements of different vehicle types, and increases design and development costs such as mold cost and the like;
eighthly, the design of error prevention is not adopted, so that the sensor is installed incorrectly, and the post processor cannot be used normally;
and ninthly, the sensor wire harness is arranged on the post-processor assembly and is not integrated or reliably fixed, and the wire harness is disordered in trend and is very easy to bake.
Disclosure of Invention
In order to solve the problem, the utility model provides a diesel vehicle U type aftertreatment ware assembly, the technical scheme of adoption as follows:
the utility model provides a diesel vehicle U type aftertreatment ware assembly, its characterized in that, is including being U type structural distribution and consecutive DOC assembly, DPF assembly, hybrid chamber assembly and SCR ASC assembly, can dismantle through the clamp between DOC assembly and the DPF assembly and be connected, can dismantle through the clamp between DPF assembly, SCR ASC assembly and the hybrid chamber assembly and be connected, can dismantle fixed connection through the support assembly between SCR ASC assembly and DOC assembly, the DPF assembly, DOC assembly entry end is connected with the inlet end awl, is provided with the outlet end awl on the SCR ASC assembly exit end.
Preferably, the outer surfaces of the DOC assembly, the DPF assembly and the SCR/ASC assembly are respectively provided with a heat insulation cotton layer and a metal heat insulation shell.
Preferably, the mixing chamber assembly adopts a non-contact cyclone mixer structure.
Preferably, a urea nozzle seat is arranged at the concave part of the mixing cavity assembly.
Preferably, a wiring harness connector fixing support and a wiring harness fixing support are further fixedly connected to the DOC assembly, the DPF assembly, the mixing cavity assembly and the SCR/ASC assembly.
Preferably, a PM sensor bracket and NO are fixedly connected to the SCR/ASC assemblyXA sensor holder.
Preferably, a differential pressure sensor fixing support is arranged on the DOC assembly.
Preferably, the DOC assembly inlet end, the DOC assembly outlet end, the mixing chamber assembly and the SCR/ASC assembly are provided with temperature sensor bases.
Preferably, cordierite carriers are packaged in the DOC assembly, the DPF assembly and the SCR/ASC assembly, and the surfaces of the carriers are coated with Pt and Pd precious metal coatings.
Preferably, the inlet end awl is variable cross section arc structure, and the inlet end awl is 90 contained angles with DOC assembly the central axis and arranges and can rotate around DOC assembly the central axis, connect in DOC assembly entrance point.
The utility model has the advantages that:
1. the DOC assembly and the DPF assembly, the mixing cavity assembly, the DPF assembly and the SCR/ASC assembly are detachably connected through the hoops and are convenient to detach, the SCR/ASC assembly is fixed in position between the DOC assembly and the DPF assembly through the detachable support assembly, shaking between parts is avoided, and meanwhile, the assembly and the disassembly are convenient;
2. the integrated NOx sensor support, PM sensor support, differential pressure sensor fixed bolster, pencil connector support, pencil fixed bolster are used for fixed upper reaches and low reaches NOx sensor, PM sensor, differential pressure sensor, urea pipeline, urea nozzle condenser tube and aftertreatment pencil on the whole device, whole easy dismounting, neat pleasing to the eye.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
Figure 2 is a rear view of the structure of the utility model
FIG. 3 is a sectional view of the structure of the present invention
Wherein, 1-DOC assembly, 2-DPF assembly, 3-mixing chamber assembly, 4-SCR/ASC assembly, 5-urea nozzle seat, 6-air inlet end cone, 7-DPF assembly outlet end, 8-SCR/ASC assembly inlet end, 9-SCR/ASC assembly outlet end, 10-air outlet end cone, 11-mixer assembly, 12-mixer spoiler, 13-mixer assembly outlet end, 14-exhaust pipe, 15-DOC assembly inlet end, 16-DOC assembly outlet end, 17-DPF assembly inlet end, 18-air inlet pipe assembly, 19-clamp, 20-long pressure guiding pipe, 21-mixer assembly inlet end, 22-wire harness connector bracket, 23-short pressure guiding pipe, 24-PM sensor bracket, 25-NOXThe sensor comprises a sensor support, 26-a differential pressure sensor fixing support, 27-a wiring harness fixing support, 28-a support assembly and 29-a temperature sensor seat.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The diesel vehicle U-shaped postprocessor assembly shown in fig. 1-3 mainly comprises a DOC assembly 1, a DPF assembly 2, a mixing chamber assembly 3 and an SCR/ASC assembly 4 which are sequentially connected and distributed in a U-shaped structure, wherein the DOC assembly 1 and the DPF assembly 2 are both cylindrical shells, a DOC assembly inlet end 15, a DOC assembly outlet end 16, a DPF assembly inlet end 17 and a DPF assembly outlet end 7 are all positioned on the same axis, the DOC assembly inlet end 15 is connected with an air inlet end cone 6, the air inlet end cone 6 is of a variable cross-section arc structure and distributed at an included angle of 90 degrees with the axis of the DOC assembly 1, the air inlet end cone 6 enables airflow to be uniformly distributed at the DOC assembly inlet end 15 to enhance catalytic reaction in the DOC assembly 1, the air inlet end cone 6 is connected with one end of an air inlet pipe assembly 18, the other end of the air inlet pipe assembly 18 is connected with an engine exhaust pipe for receiving tail gas discharged by the engine, and the tail gas enters the DOC assembly 1 from the air inlet pipe assembly 18, in the DOC assembly 1, hydrocarbon and carbon monoxide in the exhaust gas are subjected to oxidation catalytic reaction to generate carbon dioxide and water, PM particles in the exhaust gas are collected by the DPF assembly 2, and a differential pressure sensor fixing bracket 26 and a harness connector bracket 22 for fixing the differential pressure sensor and the harness connector are further provided on an outer side wall of the DOC assembly 1.
The mixing chamber assembly 3 is respectively fixedly connected with the DPF assembly 2 and the SCR/ASC assembly 4 through the clamp 19, in this embodiment, the mixing chamber assembly 3 adopts a non-contact swirl mixer, and the specific structure thereof is as shown in CN 208763727U, so that unnecessary description is omitted, a urea nozzle holder 5 is installed at a recessed portion of the mixing chamber assembly 3 for installing a urea nozzle, so as to inject a reducing agent into the mixing chamber assembly 3, the urea nozzle is installed on the urea nozzle holder 5, and the injection port thereof faces the mixer assembly inlet end 21 in the mixing chamber assembly 3, the central axis of the injection port of the urea nozzle is substantially coaxial with the central axis of the mixer assembly 11, when the exhaust gas enters the mixing chamber assembly 3 from the DPF assembly 2, the exhaust gas is mixed with the reducing agent injected by the urea nozzle, and the outer side wall of the mixing chamber assembly 3 is further fixedly connected with a plurality of harness fixing brackets 27.
The SCR/ASC assembly 4 is of a cylindrical shell structure, an inlet end 8 of the SCR/ASC assembly is connected with the mixing cavity assembly 3, an outlet end 9 of the SCR/ASC assembly is connected with an outlet end cone 10, the outlet end cone 10 is connected with an outlet pipe 14 and used for discharging tail gas after treatment, and a PM sensor support 24 and an NO sensor are welded on the outer side wall of the SCR/ASC assembly 4X A sensor holder 25.
A bracket assembly 28 is arranged between the SCR/ASC assembly 4 and the DOC assembly 1 and between the SCR/ASC assembly 4 and the DPF assembly 2, and is used for fixing the structures between the two, in addition, the air inlet pipe assembly 18, one side of the mixing cavity assembly 3 close to the outlet end and the outer wall of the SCR/ASC assembly 4 close to the air outlet end cone 10 are respectively provided with a temperature sensor seat 29, and the temperature sensor seats 29 adopt different specifications and are installed in a mistake-proof way, therefore, the temperature sensor is convenient to install and is used for monitoring the temperature of tail gas at each point, cordierite carriers are packaged in the DOC assembly 1, the DPF assembly 2 and the SCR/ASC assembly 4, the outer surfaces of the carriers are coated with Pt and Pd noble metal coatings, and a liner, a shell, high silica heat insulation cotton and a heat insulation shell are sequentially arranged from inside to outside to perform heat insulation to a certain degree.
The DOC assembly 1, the DPF assembly 2, the mixing cavity assembly 3 and the SCR/ASC assembly 4 can be disassembled conveniently, only the clamp 19 connected between the assemblies needs to be loosened and taken down, the angle of the air inlet end cone 6 can be adjusted, the requirements of different vehicle types can be met, and the matching degree is high; the integrated NOx sensor support 25, the PM sensor support 24, the differential pressure sensor fixing support 26, the wiring harness connector support 22 and the wiring harness fixing support 27 are used for fixing an upstream NOx sensor, a downstream NOx sensor, a PM sensor, a differential pressure sensor, a urea pipeline, a urea nozzle cooling water pipe and a post-processor wiring harness, and are convenient to assemble and disassemble, neat and attractive; the temperature sensor seats 29 adopt different specifications and can be installed in a mistake-proofing way.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a diesel vehicle U type aftertreatment ware assembly, its characterized in that, is including being U type structural distribution and consecutive DOC assembly, DPF assembly, hybrid chamber assembly and SCR ASC assembly, can dismantle through the clamp between DOC assembly and the DPF assembly and be connected, can dismantle through the clamp between DPF assembly, SCR ASC assembly and the hybrid chamber assembly and be connected, can dismantle fixed connection through the support assembly between SCR ASC assembly and DOC assembly, the DPF assembly, DOC assembly entry end is connected with the inlet end awl, is provided with the outlet end awl on the SCR ASC assembly exit end.
2. The diesel vehicle U-shaped aftertreatment unit assembly according to claim 1, wherein the DOC assembly, the DPF assembly and the SCR/ASC assembly are provided with an insulation cotton layer and a metal insulation shell on the outer surface.
3. The diesel vehicle U-shaped aftertreatment device assembly of claim 1, wherein the mixing chamber assembly is of a non-contact cyclonic mixer structure.
4. The diesel vehicle U-shaped aftertreatment device assembly according to claim 1, wherein a urea nozzle holder is arranged at a recessed portion of the mixing chamber assembly.
5. The diesel vehicle U-shaped aftertreatment device assembly according to claim 1, wherein a harness connector fixing bracket and a harness fixing bracket are further fixedly connected to the DOC assembly, the DPF assembly, the mixing chamber assembly and the SCR/ASC assembly.
6. The diesel vehicle U-shaped aftertreatment unit assembly according to claim 1, wherein the SCR/ASC assembly is fixedly connected with a PM sensor bracket and NOXA sensor holder.
7. The diesel vehicle U-shaped aftertreatment unit assembly according to claim 1, wherein a differential pressure sensor fixing support is arranged on the DOC assembly.
8. The diesel vehicle U-shaped aftertreatment assembly of claim 1, wherein temperature sensor mounts are provided on the DOC assembly inlet end, outlet end, mixing chamber assembly, and SCR/ASC assembly.
9. The diesel vehicle U-shaped aftertreatment device assembly according to claim 1, wherein the DOC assembly, the DPF assembly and the SCR/ASC assembly are all packaged with cordierite carriers, and the surfaces of the carriers are all coated with Pt and Pd precious metal coatings.
10. The diesel vehicle U-shaped postprocessor assembly as claimed in claim 1, wherein the inlet end cone is of a variable cross-section arc structure, is arranged at an included angle of 90 degrees with the central axis of the DOC assembly, can rotate around the central axis of the DOC assembly, and is connected to the inlet end of the DOC assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120373688.3U CN214304006U (en) | 2021-02-18 | 2021-02-18 | U-shaped postprocessor assembly of diesel vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120373688.3U CN214304006U (en) | 2021-02-18 | 2021-02-18 | U-shaped postprocessor assembly of diesel vehicle |
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| Publication Number | Publication Date |
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| CN214304006U true CN214304006U (en) | 2021-09-28 |
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| CN202120373688.3U Active CN214304006U (en) | 2021-02-18 | 2021-02-18 | U-shaped postprocessor assembly of diesel vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991926A (en) * | 2022-06-29 | 2022-09-02 | 东风商用车有限公司 | Mounting structure applied to inclined post processor |
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2021
- 2021-02-18 CN CN202120373688.3U patent/CN214304006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991926A (en) * | 2022-06-29 | 2022-09-02 | 东风商用车有限公司 | Mounting structure applied to inclined post processor |
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