CN216381562U - Non-road diesel engine post-processing system - Google Patents
Non-road diesel engine post-processing system Download PDFInfo
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- CN216381562U CN216381562U CN202123388965.7U CN202123388965U CN216381562U CN 216381562 U CN216381562 U CN 216381562U CN 202123388965 U CN202123388965 U CN 202123388965U CN 216381562 U CN216381562 U CN 216381562U
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- 238000012805 post-processing Methods 0.000 title abstract description 12
- 238000004806 packaging method and process Methods 0.000 claims abstract description 82
- 238000005538 encapsulation Methods 0.000 claims abstract description 31
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 131
- 239000004202 carbamide Substances 0.000 claims description 131
- 238000010438 heat treatment Methods 0.000 claims description 31
- 239000000243 solution Substances 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 13
- 238000003745 diagnosis Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 239000008236 heating water Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Images
Classifications
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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
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a post-processing system of a non-road diesel engine, which comprises a packaging part, wherein the packaging part sequentially comprises a DOC packaging unit, a DPF packaging unit and an SCR packaging unit from bottom to top, the DOC packaging unit is connected with the DPF packaging unit through a hoop, the DPF packaging unit is connected with the SCR packaging unit through the hoop, and a nozzle and a mixer are arranged between the DPF packaging unit and the SCR packaging unit; DPF encapsulation unit, SCR encapsulation unit fixed mounting are on the encapsulation support, and DPF encapsulation unit, SCR encapsulation unit and encapsulation support set up in the encapsulation guard shield to respectively rather than fixed connection, DOC encapsulation unit upper end is provided with mounting flange, and DOC encapsulation unit passes through the lower extreme flange fixed connection of mounting flange and encapsulation guard shield. The scheme adopts a modular design, and is convenient for the design and matching of different complete machines; meanwhile, the device can work continuously on the whole machine safely and effectively, and meets the requirement of national emission of non-roads.
Description
Technical Field
The utility model belongs to the technical field of diesel engine pollutant emission control, and particularly relates to a non-road diesel engine post-treatment system.
Background
In 28 days 12 months in 2020, the department of ecological environment issued "technical requirements for pollutant emission control of non-road diesel mobile machinery", in which technical requirements for detecting the number of particles in non-road mobile machinery, including technical requirements for NOx control diagnosis NCD, particulate matter control diagnosis PCD and the like, were proposed, and the non-road national fourth switching date was 2022, 12 months and 1 day. Compared with the three-stage technology difficulty of China, the development, integrated design, calibration and the like of the whole system of the four-stage diesel engine of China are greatly increased. In order to meet the technical requirements of PN in the four emission standards of non-road countries, a particulate matter trap DPF must be additionally arranged on the aftertreatment system. After the DPF is installed, a great challenge is brought to the originally limited arrangement space. Meanwhile, the non-road mobile machinery has various types of variations, complex working conditions, various flammable weeds and dust particles in the working environment, high requirements on thermal protection and safety protection of the whole machine, visual field requirements of drivers and other factors, and great difficulty is brought to the design matching of the post-processing system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provides a non-road diesel engine post-processing system, and the scheme adopts a modular design and is convenient for the design matching of different complete machines; meanwhile, the device can work continuously on the whole machine safely and effectively, and meets the requirement of national emission of non-roads.
In order to achieve the purpose, the utility model adopts the following technical scheme: a non-road diesel engine post-processing system comprises a packaging component, wherein the packaging component sequentially comprises a DOC packaging unit, a DPF packaging unit and an SCR packaging unit from bottom to top, the DOC packaging unit and the DPF packaging unit are connected through a hoop, the DPF packaging unit and the SCR packaging unit are connected through the hoop, and a nozzle and a mixer are arranged between the DPF packaging unit and the SCR packaging unit; DPF encapsulation unit, SCR encapsulation unit fixed mounting are on the encapsulation support, and DPF encapsulation unit, SCR encapsulation unit, encapsulation support set up in the encapsulation guard shield to respectively rather than fixed connection, DOC encapsulation unit upper end is provided with mounting flange, and DOC encapsulation unit passes through the lower extreme flange fixed connection of mounting flange and encapsulation guard shield.
Preferably, the packaging component further comprises a nitrogen-oxygen sensor, a differential pressure sensor, an SCR front temperature sensor, a DPF front temperature sensor and a DOC front temperature sensor; the nitrogen-oxygen sensor, the nozzle and the mixer are in threaded connection with the SCR packaging unit; the differential pressure sensor, the SCR front temperature sensor and the DPF front temperature sensor are in threaded connection with the DPF packaging unit; and the DOC front temperature sensor is in threaded connection with the DOC packaging unit.
Preferably, the tail pipe assembly further comprises a tail pipe component, wherein one end of the tail pipe component is inserted into the top end of the packaging component and is fastened through a tail pipe hoop.
Preferably, the tail pipe part is fixedly connected with the whole machine through a connecting piece, and a vibration damping block for vibration isolation is arranged between the connecting piece and the whole machine.
Preferably, the air inlet device further comprises a front pipe component, the front pipe component is fixedly connected with the air inlet flange of the packaging component, and the front pipe component is fixedly connected with the whole machine through a front pipe hoop and a front pipe bracket.
Preferably, a corrugated pipe is arranged in the middle section of the front pipe part.
Preferably, the heat insulation cotton is arranged outside the front pipe component.
As the preferred scheme, still include the urea case subassembly, the urea case subassembly includes urea case, urea pump and urea case support, and wherein urea case and urea case support adopt the steel band bundle to connect to an organic whole is fixed on the complete machine, and the urea pump is installed at urea case top, and the urea pump passes through urea injection pipe and connects the nozzle.
As a preferred scheme, the urea box assembly further comprises a heating electromagnetic valve and a relay box; the heating electromagnetic valve and the relay box are fixedly arranged on a urea box bracket, and a heating pipeline is arranged in the urea box and used for unfreezing urea solution in the urea box; the heating electromagnetic valve is used for communicating and cutting off a pipeline between the engine cooling water joint and the heating pipeline, and a urea control unit is integrated in the urea pump; and the urea control unit is used for controlling the heating electromagnetic valve to enable the cooling water of the engine to flow into the heating pipeline according to the environmental temperature so as to realize the unfreezing of the urea solution in the urea box.
Preferably, the urea tank further comprises a liquid level temperature sensor, wherein the liquid level temperature sensor is fixedly arranged below the urea pump and is positioned inside the urea tank and used for measuring the temperature and the volume of the urea solution in the urea tank.
Advantageous effects
The non-road diesel engine post-treatment system adopts a modular design, the packaging part adopts an integrated design, and the urea box part adopts a pump and box integrated design, so that the non-road diesel engine post-treatment system has the characteristics of compact structure and low development cost. When different complete machines are matched, the packaging part and the urea box part can be directly used without newly opening a mold, and only the urea pipeline, the cooling water pipeline and the corresponding wiring harness need to be redesigned aiming at different complete machines, so that the packaging part has the advantages of good universality, low cost and the like.
And secondly, the packaging part adopts a DOC + DPF + SCR technical route, and is arranged outside the hood in an integrated structure, so that the mounting and maintenance are convenient, and the adaptability to different machine types and severe working environments is stronger. The integrated structural arrangement is beneficial to design matching of the post-processing system on different complete machines, greatly improves the universality of parts and effectively reduces the development cost. The mixer is arranged in the packaging part, so that the risk of urea crystallization of the post-treatment system can be effectively avoided.
And thirdly, the urea box component adopts a pump and box integrated design, so that the urea box component is convenient to install and arrange in the whole vehicle. The heating and unfreezing functions of the urea box and the urea pump are integrated, under the low-temperature environment, the DCU controls the heating electromagnetic valve to be opened, engine cooling water is introduced to heat and unfreeze the urea box and the urea pump, and the safe and effective operation of the post-treatment system is guaranteed.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a first perspective of an aftertreatment system of the utility model;
FIG. 2 is a block diagram of a second perspective of the aftertreatment system of the utility model;
fig. 3 is an overall structural view of a package member;
fig. 4 is an internal structural view of a package member;
FIG. 5 is a block diagram of a urea tank assembly;
the labels in the figure are: 1. a tail pipe component, 11, a tail pipe hoop, 12, a vibration damping block, 2, a packaging component, 21, a DOC packaging unit, 22, a DPF packaging unit, 23, an SCR packaging unit, 24, a nozzle, 25, a mixer, 26, a packaging bracket, 27, a packaging shield, 28, a mounting flange, 201, a nitrogen-oxygen sensor, 202, a differential pressure sensor, 203, an SCR front temperature sensor, 204, a DPF front temperature sensor, 205, a DOC front temperature sensor, 3, a front pipe component, 31, a front pipe hoop, 32, a front pipe bracket, 33, a gasket, 4, a urea box component, 41, a urea box, 42, a urea pump, 43, a heating electromagnetic valve, 44, a urea box shield, 45, a relay box, 46, a urea box bracket, 47, a liquid level temperature sensor, 48, a heating pipeline, 5, a urea injection pipe, 6, a nozzle cooling water pipe, 7, a post-treatment system wiring harness, 8, a wiring harness and a pipeline fixing clamp, 9. urea case heating water pipe, A, air current direction.
Detailed Description
The utility model is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.
As shown in fig. 1 and 2, the present embodiment provides an off-road diesel engine post-treatment system, which includes a tail pipe member 1, a packing member 2, a head pipe member 3, a urea tank member 4, a urea injection pipe 5, a nozzle cooling water pipe 6, a post-treatment system harness 7, a harness and pipe fixing clip 8, and a urea tank heating water pipe 9.
According to the scheme, the tail pipe component 1 is inserted into the top end of the packaging component 2 and is fastened by the tail pipe hoop 11 and the screws; the tail pipe component 1 is connected with the whole machine through a bolt, and the vibration isolation is carried out at the joint through a vibration attenuation block 12.
In the scheme, the air inlet flange of the packaging component 2 is connected with the front pipe component 3 through bolts, and the joint is sealed through a gasket 33; the upper end of the front pipe component 3 is connected with a supercharger bolt of a matched engine, and the joint is sealed by a gasket. The front pipe component 3 is connected with the front pipe bracket 32 and the whole machine through a front pipe hoop 31 by bolts. The middle section of the front pipe component 3 is provided with a corrugated pipe to isolate the vibration noise of the engine and offset the assembly error, and the outside of the front pipe component 3 is provided with heat preservation cotton for heat preservation and heat insulation; as shown in the airflow direction a in fig. 3 and 4, when the engine is in operation, the exhaust gas enters the enclosure 2 from the head pipe assembly 3, and after being treated in the enclosure 2, the exhaust gas reaching the standard is discharged to the outside through the tail pipe assembly 1.
In the embodiment, the urea box component 4 is connected with the whole machine through bolts; the urea injection pipe 5 connects the nozzle 24 on the packaging part 2 with the urea pump 42 on the urea box part 4 through a quick-connection plug; the urea injection pipe 5 is provided with a quick-connection plug resistant to corrosion of urea solution, and can convey a certain amount of urea solution from the urea box component 4 to the packaging component 2; a heating resistance wire is arranged in the pipe wall of the urea injection pipe 5 and is used for low-temperature unfreezing of urea in the pipeline; the nozzle cooling water pipe 6 connects the nozzle 24 on the packaging component 2 with a cooling water joint of an engine through a hose clamp, and the nozzle 24 is cooled by using engine cooling water to prevent the nozzle 24 from high-temperature failure; the urea box heating water pipe 9 connects the urea box component 4 with a cooling water joint of an engine through a hose clamp, and the engine cooling water is used for heating and unfreezing the urea box component 4 to ensure that the urea box component can normally work at low temperature; the wire harness 7 of the post-processing system is connected with the wire harness interface of the whole machine through a connector, normal communication between the post-processing system and an engine ECU is achieved, operating parameters of the engine are obtained, and injection of urea solution, DPF regeneration, urea thawing, sending of fault diagnosis information and the like are accurately controlled by combining various sensors and electromagnetic valves on the packaging component 2 and the urea box component 4. The wire harness and pipeline fixing clamp 8 is used for connecting the wire harness 7 of the post-processing system and all pipelines to the whole machine through bolts.
As shown in fig. 3 and 4, the package member 2 includes a nitrogen oxide sensor 201, a package shroud 27, a differential pressure sensor 202, a nozzle 24, an SCR front temperature sensor 203, a DPF front temperature sensor 204, a package support 26, a DOC front temperature sensor 205, a DOC package unit 21, a mounting flange 28, a DPF package unit 22, a mixer 25, and an SCR package unit 23. Wherein the nitrogen oxygen sensor 201, the nozzle 24 and the mixer 25 are screwed on the SCR packaging unit 23; the differential pressure sensor 202, the SCR front temperature sensor 203 and the DPF front temperature sensor 204 are screwed to the DPF packing unit 22; the DOC front temperature sensor 205 is in threaded connection with the DOC packaging unit 21; the mounting flange 28 is welded on the DOC packaging unit 21, and the DOC packaging unit 21 is fixedly connected with the lower end flange of the packaging shield 27 through the mounting flange 28; heat preservation cotton is arranged inside the DOC packaging unit 21, the DPF packaging unit 22 and the SCR packaging unit 23 and used for heat preservation and heat insulation; the DOC packaging unit 21 and the DPF packaging unit 22 are connected through an anchor ear, and the DPF packaging unit 22 and the SCR packaging unit 23 are connected through the anchor ear, so that the assembly, disassembly and dust removal operations are convenient; the DPF packing unit 22, the SCR packing unit 23, and the packing support 26 are connected by bolts; the package cover 27 is disposed outside the DPF package unit 22, the SCR package unit 23, and the package holder 26, and the package cover 27 is connected to the DPF package unit 22, the SCR package unit 23, and the package holder 26 by bolts. In addition, encapsulation part 2 sets up special pencil support and checkpost, and the fire-retardant cover of pencil skin parcel, each sensor, nozzle 24 and pencil outside are provided with the protection casing, have guaranteed the safe effective work of electrical part and nozzle 24.
According to the scheme, the DOC packaging unit 21, the DPF packaging unit 22 and the SCR packaging unit 23 are arranged from bottom to top, and the nozzle 24 and the mixer 25 are arranged between the DPF packaging unit 22 and the SCR packaging unit 23; the integrated structural arrangement is beneficial to design matching of the post-processing system on different complete machines, greatly improves the universality of parts and effectively reduces the development cost. The mounting flange 28 is disposed at the middle part of the package member 2, rather than at the bottom part, so that the height from the top end of the package member 2 to the mounting plane can be effectively reduced, and the visual field requirement of the driver can be met. The packaging component 2 is far away from the engine, so that the superposition effect of an aftertreatment system and an engine heat source is weakened, and the working temperature in the engine cover is effectively reduced; meanwhile, the packaging component 2 is provided with the wire harness support and the clips, the wire harness is arranged more normally, the outer layer of the wire harness is wrapped by the flame-retardant sleeve, and the fire risk of the post-processing system is greatly reduced.
As shown in fig. 5, the urea tank assembly 4 includes a urea tank 41, a urea pump 42, a heating solenoid valve 43, a urea tank cover 44, a relay box 45, a urea tank holder 46, a liquid level temperature sensor 47, and a heating pipe 48. The connection between the various parts of the urea tank part 41 is as follows: the urea box 41 is connected with a urea box bracket 46 steel belt in a binding mode; the top of the urea tank 41 is provided with an expansion volume to prevent the urea solution from damaging the urea tank 41 due to freezing and expansion; the bottom of the urea box 41 is provided with a liquid discharging bolt, so that redundant urea solution can be discharged conveniently when the vehicle is not used for a long time or in cold winter; the urea pump 42 is connected with the liquid level temperature sensor 47 through screws and screwed on the urea box 41 through threads; the urea pump 42 integrates a urea control unit DCU to accurately control the opening and closing of the nozzle 24 and realize the accurate metering of the urea solution; the liquid level temperature sensor 47 is mainly used for measuring the temperature and the volume of the urea solution in the urea tank 41, a spiral stainless steel heating pipeline 48 which is resistant to corrosion of the urea solution is arranged for unfreezing the urea tank 41, and the heating pipeline 48 is arranged on the periphery of the liquid level temperature sensor 47; the heating solenoid valve 43, the urea tank shield 44, and the relay box 45 are bolted to the urea tank bracket 46. The DCU on the urea pump 42 controls the opening and closing of the heating solenoid valve 43 according to the ambient temperature, so that the engine cooling water flows into the stainless steel heating pipeline 48 through the urea tank heating water pipe 9, and the urea solution in the urea tank 41 is thawed. The urea box protective cover 44 can effectively guarantee safe operation of devices and wiring harness pipelines such as the urea pump 42, the heating electromagnetic valve 43, the relay box 45, the liquid level temperature sensor 47 and the like.
The urea box assembly 4 adopts a pump and box integrated design, integrates modules such as a urea box 41, a urea pump 42, a DCU, a liquid level temperature sensor 47, a heating electromagnetic valve 43, a relay box 45 and the like, and is convenient for installation and arrangement of the urea box assembly 4 in the whole vehicle. The urea tank assembly 4 should be located away from the engine and exhaust system to prevent decomposition failure of the urea solution due to high temperatures. The heating and unfreezing functions of the urea box 41 and the urea pump 42 are integrated, under the low-temperature environment, the DCU controls the heating electromagnetic valve 43 to be opened, engine cooling water is introduced to heat and unfreeze the urea box 41 and the urea pump 42, and the safe and effective operation of the post-treatment system is guaranteed. The urea pump 42 has a built-in fault diagnosis function, and transmits OBD information via a CAN bus to report and store an operation state or a fault state in time, so as to perform fault diagnosis.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. An off-road diesel engine aftertreatment system, characterized by: the device comprises a packaging component (2), wherein the packaging component (2) sequentially comprises a DOC packaging unit (21), a DPF packaging unit (22) and an SCR packaging unit (23) from bottom to top, the DOC packaging unit (21) and the DPF packaging unit (22) are connected through a hoop, the DPF packaging unit (22) and the SCR packaging unit (23) are connected through the hoop, and a nozzle (24) and a mixer (25) are arranged between the DPF packaging unit (22) and the SCR packaging unit (23); DPF encapsulation unit (22), SCR encapsulation unit (23) fixed mounting are on encapsulation support (26), DPF encapsulation unit (22), SCR encapsulation unit (23), encapsulation support (26) set up in encapsulation guard shield (27) to respectively rather than fixed connection, DOC encapsulation unit (21) upper end is provided with mounting flange (28), DOC encapsulation unit (21) pass through the lower extreme flange fixed connection of mounting flange (28) and encapsulation guard shield (27).
2. The off-road diesel aftertreatment system of claim 1, wherein: the packaging component (2) further comprises a nitrogen oxygen sensor (201), a differential pressure sensor (202), an SCR front temperature sensor (203), a DPF front temperature sensor (204) and a DOC front temperature sensor (205); the nitrogen-oxygen sensor (201), the nozzle (24) and the mixer (25) are in threaded connection with the SCR packaging unit (23); the differential pressure sensor (202), the SCR front temperature sensor (203) and the DPF front temperature sensor (204) are connected to the DPF packaging unit (22) through threads; the DOC front temperature sensor (205) is in threaded connection with the DOC packaging unit (21).
3. The off-road diesel aftertreatment system of claim 1 or 2, wherein: the packaging structure is characterized by further comprising a tail pipe component (1), wherein one end of the tail pipe component (1) is inserted into the top end of the packaging component (2) and is fastened through a tail pipe hoop (11).
4. The off-road diesel aftertreatment system of claim 3, wherein: the tail pipe component (1) is fixedly connected with the whole machine through a connecting piece, and a vibration damping block (12) for vibration isolation is arranged between the connecting piece and the whole machine.
5. The off-road diesel aftertreatment system of claim 3, wherein: the air inlet sealing device is characterized by further comprising a front pipe part (3), wherein the front pipe part (3) is fixedly connected with an air inlet flange of the packaging part (2), and the front pipe part (3) is fixedly connected with the whole machine through a front pipe hoop (31) and a front pipe support (32).
6. The off-road diesel aftertreatment system of claim 5, wherein: the middle section of the front pipe component (3) is provided with a corrugated pipe.
7. The off-road diesel aftertreatment system of claim 5, wherein: the outside of the front pipe component (3) is provided with heat preservation cotton.
8. The off-road diesel aftertreatment system of claim 5, wherein: still include urea box subassembly (4), urea box subassembly (4) are including urea case (41), urea pump (42) and urea case support (46), and wherein urea case (41) adopt the steel band to tie up with urea case support (46) to an organic whole is fixed on the complete machine, and urea pump (42) are installed at urea case (41) top, and urea pump (42) are through urea injection pipe (5) connection nozzle (24).
9. The off-road diesel aftertreatment system of claim 8, wherein: the urea box assembly (4) further comprises a heating electromagnetic valve (43) and a relay box (45); the heating electromagnetic valve (43) and the relay box (45) are fixedly arranged on the urea box bracket (46), and a heating pipeline (48) is arranged in the urea box (41) and is used for realizing the unfreezing of the urea solution in the urea box (41); the heating electromagnetic valve (43) is used for connecting and cutting off a pipeline between the engine cooling water joint and the heating pipeline (48), and a urea control unit is integrated in the urea pump (42); the urea control unit is used for controlling a heating electromagnetic valve (43) to enable engine cooling water to flow into the heating pipeline (48) according to the environment temperature, and unfreezing of urea solution in the urea box (41) is achieved.
10. The off-road diesel aftertreatment system of claim 8, wherein: the urea tank also comprises a liquid level temperature sensor (47), wherein the liquid level temperature sensor (47) is fixedly arranged below the urea pump (42) and is positioned inside the urea tank (41) and used for measuring the temperature and the volume of the urea solution in the urea tank (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123388965.7U CN216381562U (en) | 2021-12-31 | 2021-12-31 | Non-road diesel engine post-processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123388965.7U CN216381562U (en) | 2021-12-31 | 2021-12-31 | Non-road diesel engine post-processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216381562U true CN216381562U (en) | 2022-04-26 |
Family
ID=81238505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123388965.7U Expired - Fee Related CN216381562U (en) | 2021-12-31 | 2021-12-31 | Non-road diesel engine post-processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216381562U (en) |
-
2021
- 2021-12-31 CN CN202123388965.7U patent/CN216381562U/en not_active Expired - Fee Related
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