CN103089378B - Motor vehicle exhaust processing device - Google Patents
Motor vehicle exhaust processing device Download PDFInfo
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- CN103089378B CN103089378B CN201310036915.3A CN201310036915A CN103089378B CN 103089378 B CN103089378 B CN 103089378B CN 201310036915 A CN201310036915 A CN 201310036915A CN 103089378 B CN103089378 B CN 103089378B
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- urea
- motor
- treatment apparatus
- driven vehicle
- vehicle treatment
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000004202 carbamide Substances 0.000 claims abstract description 70
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 30
- 229910021529 ammonia Inorganic materials 0.000 claims description 21
- 239000006262 metallic foam Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 4
- 238000006479 redox reaction Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000003197 catalytic effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000002528 anti-freeze Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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
-
- 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 invention discloses a motor vehicle exhaust processing device. Solid urea is added inside a main body unit. When a controller detects that nitric oxides are included in motor vehicle exhaust, the controller controls the main body unit to work, namely, the solid urea in the main body unit is heated by a heating device to generate ammonia gas and the ammonia gas is output through an ammonia gas outlet and enters to a selective catalytic reduction (SCR) box body communicated with the main body unit. The ammonia gas and the nitric oxides in the motor vehicle exhaust perform a redox reaction in a metal carrier in the SCR box body so that nitrogen and water vapor which are pollution free are generated. The purified exhaust is discharged from a gas outlet pipe at the other end. According to the motor vehicle exhaust processing device, due to the fact that the solid urea is adopted, freeze is avoided at low temperature so that storage and carrying are convenient. Compared with liquid urea in the prior art, storage volume in a urea tank is large and using time is long. Further, the solid urea is converted from a solid state to a gas stage directly in operation so that a connecting pipe is prevented from being blocked.
Description
Technical field
The present invention relates to tail gas disposal technique field, particularly a kind of motor-driven vehicle treatment apparatus.
Background technique
Along with expanding economy, China's automobile pollution grows at top speed year after year, and vehicular pollutant discharge capacity total amount is large, has a strong impact on atmosphere quality.Environmental protection department due to various countries proposes to reduce further the nitrogen oxides pollution thing (domestic be commonly called as Europe IV standard) of diesel emission, and engine production business brings into use SCR technology (selective catalytic reduction technology) to reach the requirement of environmental administration.Diesel engine vent gas treatment fluid (domestic be commonly called as automobile urea) is the article of consumption must used in SCR technology.SCR system comprises urea tank (being mounted with automobile urea) and catalytic reactor, and particularly, catalytic reactor comprises, SCR casing and the metallic carrier being arranged on SCR box house.Its working principle is: when finding there is nitrogen oxide in outlet pipe, urea tank sprays automobile urea automatically, and automobile urea and nitrogen oxide, in catalytic reactor, redox reaction occurs, and generates free of contamination nitrogen and water vapor discharge.
Current China market all adopts liquid automobile urea, adaptive is liquid area tank with it.But liquid automobile urea itself is not easy to store and carry, and easily freezes under low temperature; In using process, the urea residue remained in connecting tube can condense when temperature is lower, silts connecting tube up.
On the other hand, current metallic carrier, has rolled rear carrier shell and has fixed welding fabrication.The assembling of this traditional form can not guarantee the soundness of carrier radial direction, stability between layers can not ensure, in the vibrations of jolting in vehicle travel process, carrier can because vibrations be out of shape, the ventilating performance of carrier and catalytic efficiency are reduced, and stability also decreases.
Therefore, how to solve motor-driven vehicle treatment apparatus of the prior art, owing to using liquid automobile urea, and the little and cryogenic temperature condensation of the memory space caused silts the problem of connecting tube up, is the technical problem that those skilled in the art need solution badly.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is for providing a kind of motor-driven vehicle treatment apparatus, can solve motor-driven vehicle treatment apparatus of the prior art, owing to using liquid automobile urea, and the little and cryogenic temperature condensation of the memory space caused silts the problem of connecting tube up.
For solving the problems of the technologies described above, the invention provides a kind of motor-driven vehicle treatment apparatus, comprising urea tank, the SCR casing be connected with described urea tank and being arranged on the metallic carrier of described SCR box house;
Described urea tank comprises main unit, described main unit is provided with urea filler and ammonia delivery outlet;
The heating equipment for heating urea be connected with described main unit;
For detecting tail gas nitrogen oxide content to judge the controller whether described main unit works;
Be arranged on the support for being connected with automobile in described main unit;
Described SCR casing is square box, and described square box one end is connected with motor vehicle exhaust, and the other end is provided with steam outlet pipe.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, also comprise the start unit and temperature transducer that are connected with described main unit;
Described start unit inside is provided with the small-sized storage tank for holding urea;
Described controller comprises control module, the described control module small-sized storage tank controlled in described start unit first works and provides ammonia, when the urea that described temperature transducer detects in main unit reaches operating temperature, control module control subject cell operation provides ammonia.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, described heating equipment comprises the heating pipe being arranged on described main unit inside and the circulation loop be connected with heating pipe, has heating agent in described circulation loop.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, be provided with carrier baffle assembly in described SCR casing, described metallic carrier is arranged on described carrier baffle assembly.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, described metallic carrier comprises metallic foam support and wire mesh carrier.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, also comprise the first dividing plate arranged between described metallic foam support and the second partition be arranged between described wire mesh carrier.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, also comprise the air inlet hush pipe being arranged on described SCR box house, described air inlet hush pipe is connected with described motor vehicle exhaust.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, described metallic carrier adopts fastening piece to carry out fastening, described fastening piece comprises engagement portion and the lock part of the formula structure that is fixed with one, described engagement portion has the double-spiral structure coordinated for the mesh online with described metal fiber wire, and the size of described lock part is greater than described mesh.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, the end of described lock part extends to form reinforced shaft along the central axis direction of described engagement portion to the end of described engagement portion.
Preferably, in above-mentioned motor-driven vehicle treatment apparatus, it is characterized in that, the arranged outside of described urea tank has Totally-enclosed protective cover.
Relative to prior art, technique effect of the present invention is:
Motor-driven vehicle treatment apparatus provided by the invention, comprises urea tank, the SCR casing be connected with urea tank and is arranged on the metallic carrier of described SCR box house.Urea tank is connected with automobile by support, during work, solid urea is added main unit inside from urea filler, when controller detect in vehicle exhaust containing nitrogen oxide time, controller control subject unit is started working, namely the solid urea in heating devices heat main unit generates ammonia, and export from ammonia delivery outlet, ammonia enters and is attached thereto logical SCR casing, vehicle exhaust enters the SCR casing communicated with it from motor vehicle exhaust, thus there is redox reaction in the metallic carrier of the nitrogen oxide in ammonia and vehicle exhaust in SCR casing, generate free of contamination nitrogen and water vapor, thus cleaning of off-gas, clean tail gas is discharged from the steam outlet pipe of the SCR casing the other end.
In summary, motor-driven vehicle treatment apparatus provided by the invention, owing to have employed solid urea, can not freeze at low temperatures, and it is very convenient to deposit and carry, and compared to liquid area of the prior art, the memory space in urea tank is larger; On the other hand, owing to being directly become gaseous state from solid-state in the course of the work, therefore up, connecting tube can not be silted.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structural representation of motor-driven vehicle treatment apparatus provided by the invention;
Fig. 2 is the structural representation at another visual angle of motor-driven vehicle treatment apparatus in Fig. 1;
The plan view of the urea tank that Fig. 3 provides for enforcement a kind of in the present invention;
Fig. 4 is A-A sectional view in Fig. 1;
Fig. 5 is the plan view of urea tank in Fig. 3;
Fig. 6 is the side view of urea tank in Fig. 3;
Fig. 7 is the structural representation of SCR casing in the present invention;
Fig. 8 is the sectional view of SCR casing in the present invention;
Fig. 9 is the structural representation of the fastening piece of metallic carrier in the first embodiment in the present invention;
Figure 10 is the structural representation of the fastening piece of metallic carrier in the second embodiment in the present invention;
Figure 11 is the structural representation of the fastening piece of metallic carrier in the third embodiment in the present invention;
Figure 12 carries out fastening structural representation to metallic carrier for the fastening piece of metallic carrier adopting the embodiment of the present invention and provide;
Figure 13 carries out fastening plan view to metallic carrier for the fastening piece of metallic carrier adopting the embodiment of the present invention and provide;
Figure 14 is the left view of Figure 13;
Figure 15 is the structural representation implementing the urea tank provided another kind of in the present invention.
In upper figure, the corresponding relation between reference character and component names is:
1 main unit; 2 urea fillers; 3 ammonia delivery outlets; 41 heating pipes; 42 circulation loops; 5 controllers; 6 supports; 7 start units; 8 temperature transducers; 9 solenoid valves; 10 pressure gauges; 11 connection plugs.
21SCR casing; 22 metallic carriers; 221 metallic foam support; 222 wire mesh carriers; 23 motor vehicle exhausts; 24 steam outlet pipes; 25 carrier baffle assemblies; 261 first dividing plates; 262 second partitions; 263 dunnages; 27 air inlet hush pipes; 281 connectors; 282 link press spans; 283 connecting tubes;
31 engagement portions; 32 lock parts; 33 reinforced shafts;
0 Totally-enclosed protective cover.
Embodiment
Core of the present invention, for providing a kind of motor-driven vehicle treatment apparatus, can solve motor-driven vehicle treatment apparatus of the prior art, and owing to using liquid automobile urea, and the little and cryogenic temperature condensation of the memory space caused silts the problem of connecting tube up.
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of motor-driven vehicle treatment apparatus provided by the invention; Fig. 2 is the structural representation at another visual angle of motor-driven vehicle treatment apparatus in Fig. 1.
As depicted in figs. 1 and 2, the motor-driven vehicle treatment apparatus that the embodiment of the present invention provides, comprises urea tank, the SCR casing 21 be connected with urea tank and is arranged on the metallic carrier of described SCR casing 21 inside.Urea tank is connected with automobile by support, during work, solid urea is added main unit inside from urea filler, when controller detect in vehicle exhaust containing nitrogen oxide time, controller control subject unit is started working, namely the solid urea in heating devices heat main unit generates ammonia, and export from ammonia delivery outlet, ammonia enters and is attached thereto logical SCR casing 21, vehicle exhaust enters the SCR casing 21 communicated with it from motor vehicle exhaust 23, thus there is redox reaction in the metallic carrier of the nitrogen oxide in ammonia and vehicle exhaust in SCR casing 21, generate free of contamination nitrogen and water vapor, thus cleaning of off-gas, clean tail gas is discharged from the steam outlet pipe 24 of SCR casing 21 the other end.
In summary, motor-driven vehicle treatment apparatus provided by the invention, owing to have employed solid urea, can not freeze at low temperatures, and it is very convenient to deposit and carry, and compared to liquid area of the prior art, the memory space in urea tank is comparatively large, and service time is longer; On the other hand, owing to being directly become gaseous state from solid-state in the course of the work, therefore up, connecting tube can not be silted.
Meanwhile, because above-mentioned SCR casing 21 is square box, therefore, horizontal space is comparatively large, effectively can save longitudinal space, is applicable to the less and Motor Vehicle that horizontal space is larger of some longitudinal spaces.
Please refer to Fig. 3-Fig. 6, the plan view of the urea tank that Fig. 3 provides for enforcement a kind of in the present invention; Fig. 4 is A-A sectional view in Fig. 1; Fig. 5 is the plan view of urea tank in Fig. 3; Fig. 6 is the side view of urea tank in Fig. 3.
In order to optimize technique scheme further, in motor-driven vehicle treatment apparatus provided by the invention, its urea tank also comprises the start unit 7 and temperature transducer 8 that are connected with aforementioned body unit 1, above-mentioned start unit 7 inside is provided with the small-sized storage tank for holding urea, controller 5 sets up control module, when controller 5 detect in vehicle exhaust containing nitrogen oxide time, the control module small-sized storage tank first controlled in start unit 7 first works and provides ammonia, device for simultaneous heating heats the urea in main unit 1, when the urea that temperature transducer 8 detects in main unit 1 reaches operating temperature, control module again control subject unit 1 work provides ammonia.
Due to, urea in small-sized storage tank is less, therefore, needs the temperature of heating lower, a small amount of urea wherein can be made to become ammonia by electricity sparking, thus carry out confession ammonia, meanwhile, heating equipment heats the urea in main unit 1, once reach operating temperature, then control module control switches main unit 1 work and carries out confession ammonia, makes the present invention just can start, for ammonia, to improve being quick on the draw property of the present invention in the very short time.
Particularly, above-mentioned heating equipment comprises the heating pipe 41 being arranged on main unit 1 inside and the circulation loop 42 be connected with heating pipe 41, has heating agent in this circulation loop 42.Heating agent in circulation loop 42 circulates in circulation loop 42, flow to urea heat supply wherein after the heating pipe 41 of main unit 1 inside.In order to strengthen heat transfer effect, the present invention adopts helical heating pipe 41, increases heat exchange area, strengthens heat transfer effect.Further, above-mentioned heating agent is motor vehicle antifreeze fluid, motor vehicle antifreeze fluid circulates in circulation loop 42, the heat absorbing automobile starting generation makes self to heat up, then flow into heating pipe 41 pairs of urea to heat, after the motor vehicle antifreeze fluid outflow of low temperature, reuptake the heat intensification that automobile starting produces, so circulate.Known, the heat utilizing automobile self to start heats urea, has saved the energy.
In the present invention, above-mentioned start unit 7 is connected by solenoid valve 9 with main unit 1, solenoid valve 9 is the industry equipments by Electromagnetic Control, it coordinates different circuit can realize the control expected, and the precision controlled and flexible performance can both ensure, in the present invention, connect start unit 7 and main unit 1 by solenoid valve 9, coordinate the control module of controller 5, the flexible switching of both work can be realized.
In order to ensure the safety of whole device, in the present invention, aforementioned body unit 1 being also provided with pressure gauge 10, the pressure of main unit 1 inside being monitored in real time, improves Safety performance of the present invention.
And aforementioned body unit 1 inside has and controls each electric device of power supply to inside of the present invention and power.Further, the connection plug 11 of above-mentioned control power supply is adaptive with the storage battery of automobile, directly can plug the storage battery power taking to automobile, enhance applicability of the present invention.
Please refer to Fig. 7 and Fig. 8, Fig. 7 is the structural representation of SCR casing in the present invention; Fig. 8 is the sectional view of SCR casing in the present invention.
Motor-driven vehicle treatment apparatus provided by the invention, carrier baffle assembly 25 is provided with in its SCR casing 21, above-mentioned metallic carrier is arranged on this carrier baffle assembly 25, particularly, above-mentioned metallic carrier comprises metallic foam support 221 and wire mesh carrier 222, metallic foam support 221 is arranged on the one end near motor vehicle exhaust 23, and wire mesh carrier 222 is arranged on the one end near steam outlet pipe 24.
In order to optimize above-mentioned technique effect further, in the present invention, also comprise the first dividing plate 261 arranged between metallic foam support 221 and the second partition 262 be arranged between wire mesh carrier 222.The setting of the first dividing plate 261 and second partition 262, refer to support fixation to metallic carrier.Preferably, also comprise the dunnage 263 between end face and the end face of SCR casing 21 being arranged on wire mesh carrier 222, optimize support effect further.
The present invention also comprises the air inlet hush pipe 27 being arranged on SCR casing 21 inside, and this air inlet hush pipe 27 is connected with motor vehicle exhaust 23, namely vehicle exhaust is by directly entering air inlet hush pipe 27 after motor vehicle exhaust 23, then from the hole of air inlet hush pipe 27, flows to metallic carrier.The setting of this air inlet noise reduction effectively can reduce system noise.
Be connected in order to this SCR casing 21 is fixed with outside miscellaneous part, in the present invention, be also provided with connector 281 in the side of SCR casing 21, end face is provided with link press span 282 and the connecting tube 283 that is connected with connector 281.
Please refer to Fig. 9-Figure 10, Fig. 9 is the structural representation of the fastening piece of metallic carrier in the first embodiment in the present invention; Figure 10 is the structural representation of the fastening piece of metallic carrier in the second embodiment in the present invention.
Motor-driven vehicle treatment apparatus provided by the invention, its metallic carrier adopts fastening piece to carry out fastening, fastening piece comprises engagement portion 31 and the lock part 32 of the formula structure that is fixed with one, engagement portion 31 has the double-spiral structure coordinated for the mesh that same metal fiber wire is online, this has double-stranded engagement portion 31 can screw in mesh on wire mesh carrier 222 adjacent layer successively, thus realize the metallic carrier of the fastening as a whole formula of rolling wire mesh carrier 222, the size of lock part 32 is greater than mesh, for screwing in completely after in wire mesh carrier 222 in above-mentioned engagement portion 31, be locked on more outer field wire gaze, as shown in Figure 9 and Figure 10, in the present embodiment, lock part 32 is specially the structure being bent into annular, conveniently it rotated and lift operation, thus control the action of whole fastening piece.
As can be seen from above-mentioned technological scheme, fastening piece in the present invention adopts unique double-spiral structure to fix, avoid the harmful effect produced because wire mesh carrier 222 ruptures completely, and fundamentally can stop the possibility of wire mesh carrier 222 layering, make wire mesh carrier 222 homogeneous complete, greatly strengthen the catalytic purification efficiency of wire mesh carrier 222 simultaneously, ensure the transparent performance of wire mesh carrier 222, improve the purifying ability of wire mesh carrier 222.
Please refer to Figure 11, Figure 11 is the structural representation of the fastening piece of metallic carrier in the third embodiment in the present invention.
In order to optimize above-mentioned technological scheme further, the end of lock part 22 extends to form reinforced shaft 23 along the central axis direction of engagement portion 21 to the end of engagement portion 21, and its concrete structure as shown in figure 11.By setting up reinforced shaft 23, enhancing the intensity of total, being convenient to screw-in and the lift of metal fiber carrier fastening piece 2, also can play leading role simultaneously.
Please refer to Figure 12-Figure 14, Figure 12 carries out fastening structural representation to metallic carrier for the fastening piece of metallic carrier adopting the embodiment of the present invention and provide; Figure 13 carries out fastening plan view to metallic carrier for the fastening piece of metallic carrier adopting the embodiment of the present invention and provide; Figure 14 is the left view of Figure 13.
In the coiling process of wire mesh carrier 222, roll and fix.From rolling, according to the size of fastening piece, after wire mesh carrier 222 rolls certain diameter, first undertaken fastening by paracentral part with fastening piece on the both sides cross section of wire mesh carrier 222, form first fastening group; Then roll until complete gradually along with wire mesh carrier 222, progressively layering is fixed, and guarantees that the every one deck between wire mesh carrier 222 is all fixing, becomes an entirety; Fix in the radial direction of wire mesh carrier 222, when namely having rolled, undertaken fastening by fastening piece 2 submarginal part on the both sides cross section of wire mesh carrier 222 again, form second fastening group, and on the circumferential surface of wire mesh carrier 222, screw in fastening piece carry out fastening, form the 3rd fastening group, make wire mesh carrier 222 all become homogeneous entirety in transverse direction and radial direction, then at loading carrier shell welding fabrication.
Please refer to Figure 15, the structural representation of the urea tank that Figure 15 provides for embodiment another kind of in the present invention.
In order to optimize technique scheme further, as shown in figure 15, in the present invention; the arranged outside of its urea tank has Totally-enclosed protective cover 0, therefore, under this embodiment; urea tank can carry out work under ultralow temperature and the situation of paddling, and greatly improves applicability of the present invention.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a motor-driven vehicle treatment apparatus, is characterized in that, comprises urea tank, the SCR casing (21) be connected with described urea tank and is arranged on the inner metallic carrier (22) of described SCR casing (21);
Described urea tank comprises main unit (1), described main unit (1) is provided with urea filler (2) and ammonia delivery outlet (3);
The heating equipment for heating urea be connected with described main unit (1);
For detecting the controller (5) whether tail gas nitrogen oxide content works to judge described main unit;
Be arranged on the support (6) for being connected with automobile in described main unit;
Described SCR casing (21) is square box, and described square box one end is connected with motor vehicle exhaust (23), and the other end is provided with steam outlet pipe (24);
Described main unit (1) inside has control power supply and powers to electric device, the connection plug of described control power supply and the storage battery adaptation of automobile.
2. motor-driven vehicle treatment apparatus according to claim 1, is characterized in that, also comprises the start unit (7) and temperature transducer (8) that are connected with described main unit;
Described start unit (7) inside is provided with the small-sized storage tank for holding urea;
Described controller (5) comprises control module, the described control module small-sized storage tank controlled in described start unit (7) first works and provides ammonia, when the urea that described temperature transducer (8) detects in main unit (1) reaches operating temperature, control module control subject unit (1) work provides ammonia.
3. motor-driven vehicle treatment apparatus according to claim 2, it is characterized in that, described heating equipment comprises the circulation loop (42) being arranged on the inner heating pipe (41) of described main unit (1) and being connected with heating pipe, and described circulation loop has heating agent in (42).
4. motor-driven vehicle treatment apparatus according to claim 1, it is characterized in that, be provided with carrier baffle assembly (25) in described SCR casing (21), described metallic carrier (22) is arranged on described carrier baffle assembly (25).
5. motor-driven vehicle treatment apparatus according to claim 4, is characterized in that, described metallic carrier (22) comprises metallic foam support (221) and wire mesh carrier (222).
6. motor-driven vehicle treatment apparatus according to claim 5, it is characterized in that, also comprise the first dividing plate (261) arranged between described metallic foam support (221) and the second partition (262) be arranged between described wire mesh carrier (222).
7. motor-driven vehicle treatment apparatus according to claim 1, it is characterized in that, also comprise and be arranged on the inner air inlet hush pipe (27) of described SCR casing (21), described air inlet hush pipe (27) is connected with described motor vehicle exhaust (23).
8. motor-driven vehicle treatment apparatus according to claim 1, it is characterized in that, described metallic carrier (22) adopts fastening piece to carry out fastening, described fastening piece comprises engagement portion (31) and the lock part (32) of the formula structure that is fixed with one, described engagement portion (31) has the double-spiral structure coordinated for the mesh online with described metal fiber wire, and the size of described lock part (32) is greater than described mesh.
9. motor-driven vehicle treatment apparatus according to claim 8, it is characterized in that, the end of described lock part (32) extends to form reinforced shaft (33) along the central axis direction of described engagement portion (31) to the end of described engagement portion (31).
10. the motor-driven vehicle treatment apparatus according to any one of claim 1-9, is characterized in that, the arranged outside of described urea tank has Totally-enclosed protective cover (0).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036915.3A CN103089378B (en) | 2013-01-30 | 2013-01-30 | Motor vehicle exhaust processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036915.3A CN103089378B (en) | 2013-01-30 | 2013-01-30 | Motor vehicle exhaust processing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089378A CN103089378A (en) | 2013-05-08 |
| CN103089378B true CN103089378B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310036915.3A Active CN103089378B (en) | 2013-01-30 | 2013-01-30 | Motor vehicle exhaust processing device |
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| CN (1) | CN103089378B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697106A (en) * | 2016-02-05 | 2016-06-22 | 潍柴动力股份有限公司 | Urea heating device for efficient SCR, and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007136753A2 (en) * | 2006-05-18 | 2007-11-29 | Clean Diesel Technologies, Inc. | Improvements in diesel particulate control |
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