CN219548959U - Ammonia supply system of SCR system and vehicle - Google Patents
Ammonia supply system of SCR system and vehicle Download PDFInfo
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- CN219548959U CN219548959U CN202321044077.XU CN202321044077U CN219548959U CN 219548959 U CN219548959 U CN 219548959U CN 202321044077 U CN202321044077 U CN 202321044077U CN 219548959 U CN219548959 U CN 219548959U
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- urea
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- controller
- ammonia supply
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 51
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 178
- 239000004202 carbamide Substances 0.000 claims abstract description 178
- 239000007788 liquid Substances 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000005485 electric heating Methods 0.000 claims abstract description 24
- 230000001502 supplementing effect Effects 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 80
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005213 imbibition Methods 0.000 claims description 6
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 29
- 239000000243 solution Substances 0.000 description 29
- 238000010257 thawing Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses an ammonia supply system of an SCR (selective catalytic reduction) system and a vehicle, and belongs to the technical field of automobiles. In the utility model, when the water temperature of the engine is low, the electric heating wire in the auxiliary urea box is started to realize a faster ammonia supply function, so that the emission rise caused by insufficient ammonia supply is avoided; meanwhile, for the region which is at a lower temperature for a long time, because the auxiliary urea box is small in size and consumes more quickly, the bottom of the main urea box is higher than the bottom of the auxiliary urea box, and the liquid supplementing pipe is arranged between the main urea box and the auxiliary urea box, so that urea liquid in the main urea box can be automatically supplemented to the auxiliary urea box, the urea adding times can be reduced, and the user experience is improved.
Description
Technical Field
The utility model relates to the technical field of automobiles, in particular to an ammonia supply system of an SCR system and a vehicle.
Background
With the increasing demands of emission regulations, diesel engines have generally adopted SCR technology to treat exhaust gases to reduce emissions of pollutants NOx. SCR technology requires the use of aqueous urea solutions, which are prone to ice formation in low temperature environments. In the existing urea aqueous solution thawing scheme, an engine usually uses a water heating method to defrost urea, but in the cold starting process, the water temperature of the engine is slowly increased, so that the thawing process is also affected, further the urea pump pressure building failure is caused, urea can not be sprayed out, finally, the tail gas treatment is invalid, and the content of discharged pollutants is rapidly increased. The thawing scheme can also be that the engine adopts an electric heating method to thaw urea, but the electric heating requires extra energy consumption, so that the vehicle oil consumption in the thawing process is improved.
Therefore, a technical problem of improving energy utilization efficiency while ensuring ammonia supply of the SCR system is to be solved.
Disclosure of Invention
In order to solve the technical problem of how to ensure the ammonia supply amount of the SCR system and improve the energy utilization efficiency in the background art, the utility model provides an ammonia supply system of the SCR system and a vehicle.
According to a first aspect, an embodiment of the present utility model proposes an ammonia supply system of an SCR system, including a main urea tank, a sub urea tank, a main pipette, a sub pipette, a pipette control valve, a urea pump, a liquid replenishing pipe, a first heating component, a second heating component and a controller, where the first heating component includes a water circulation heating pipe and a gas circulation heating pipe, the second heating component includes an electric heating wire, and a volume of the main urea tank is larger than a volume of the sub urea tank; the bottom of the main urea box is higher than the bottom of the auxiliary urea box, and two ends of the liquid supplementing pipe are respectively connected to the bottom of the main urea box and the bottom of the auxiliary urea box; one end of the main liquid suction pipe is arranged in the main urea box, and the other end of the main liquid suction pipe is connected with the liquid suction control valve; one end of the auxiliary liquid suction pipe is arranged in the auxiliary urea box, and the other end of the auxiliary liquid suction pipe is connected with the liquid suction control valve; the water circulation heating pipe and the gas circulation heating pipe are inserted into the main urea tank, and the second heating component is inserted into the auxiliary urea tank; the controller is connected with the imbibition control valve and is used for outputting imbibition control instructions to change the working condition of the imbibition control valve; the urea pump is connected with the liquid suction control valve.
Optionally, the hydrologic cycle heating pipe is connected with the engine, the gas circulation heating pipe is connected with the blast pipe of SCR system, the hydrologic cycle heating pipe with the part that the gas circulation heating pipe inserted main urea case all is the opening type, and set up side by side in below the liquid level in the main urea case.
Optionally, one end of the main liquid suction pipe, which is arranged inside the main urea tank, is arranged between the water circulation heating pipe and the gas circulation heating pipe.
Optionally, the electric heating wire is connected with the storage battery, and the part of the electric heating wire inserted into the auxiliary urea box is in an opening shape to form a containing part.
Optionally, one end of the secondary pipette, which is disposed inside the secondary urea tank, is disposed inside the accommodating part.
Optionally, the ammonia supply system further comprises: the liquid level sensor is electrically connected with the controller, is arranged in the main urea box, and is used for detecting the liquid level height information in the main urea box and outputting the liquid level height information to the controller.
Optionally, the ammonia supply system further comprises a first temperature sensor and a second temperature sensor electrically connected with the controller respectively; the detection end of the first temperature sensor is arranged in the main urea box, is inserted below the liquid level, and is used for detecting first temperature information in the main urea box and outputting the first temperature information to the controller; the detection end of the second temperature sensor is arranged in the auxiliary urea box, is inserted below the liquid level, and is used for detecting second temperature information in the auxiliary urea box and outputting the second temperature information to the controller.
Optionally, the ammonia supply system further comprises: and the third temperature sensor is electrically connected with the controller, is arranged in front of the engine thermostat and is used for detecting the water temperature of the engine and outputting the water temperature of the engine to the controller.
Optionally, the ammonia supply system further comprises: the first control switch is electrically connected with the controller and is arranged on the first heating component and used for receiving a first control instruction sent by the controller so as to change the working condition of the first heating component; and the second control switch is electrically connected with the controller, is arranged on the second heating component and is used for receiving a second control instruction sent by the controller so as to change the working condition of the second heating component.
According to a second aspect, the utility model proposes a vehicle comprising an ammonia supply system of an SCR system according to any one of the embodiments described above.
In the utility model, when the engine is started in a cold mode, if the water temperature of the engine is lower, the electric heating wire in the auxiliary urea box is started so as to realize a faster ammonia supply function and avoid emission rise caused by insufficient ammonia supply; meanwhile, for the area which is at a lower temperature for a long time, the auxiliary urea box is small in size and consumes more quickly, so that the bottom of the main urea box is higher than the bottom of the auxiliary urea box, a liquid supplementing pipe is arranged between the main urea box and the auxiliary urea box, due to the pressure difference, when urea liquid in the auxiliary urea box is less, the urea liquid in the main urea box can be automatically supplemented to the auxiliary urea box, the times of adding urea into the auxiliary urea box are reduced, different heating modes are determined through different vehicle working conditions, meanwhile, a gas circulation heating pipe for thawing the urea liquid by utilizing waste heat of tail gas is increased, and the energy utilization efficiency is improved while the ammonia supply amount of an SCR system is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic diagram of an ammonia supply system of an alternative SCR system in accordance with an embodiment of the present utility model;
FIG. 2 is another schematic diagram of an ammonia supply system of an alternative SCR system in accordance with an embodiment of the present utility model;
FIG. 3 is another schematic diagram of an ammonia supply system of an alternative SCR system in accordance with an embodiment of the utility model;
FIG. 4 is another schematic diagram of an ammonia supply system of an alternative SCR system in accordance with an embodiment of the utility model;
FIG. 5 is another schematic diagram of an ammonia supply system of an alternative SCR system in accordance with an embodiment of the utility model.
Detailed Description
For a clearer understanding of the technical features, objects and effects of the present utility model, embodiments of the present utility model will now be described with reference to the drawings, in which like reference numerals refer to identical or structurally similar but functionally identical components throughout the separate views.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
As described in the background, with the increasing demands of emission regulations, diesel engines have generally adopted SCR technology to treat exhaust gas to reduce emissions of pollutant NOx. SCR technology requires the use of aqueous urea solutions, which are prone to ice formation in low temperature environments. In the existing urea aqueous solution thawing scheme, an engine usually uses a water heating method to defrost urea, but in the cold starting process, the water temperature of the engine is slowly increased, so that the thawing process is also affected, further the urea pump pressure building failure is caused, urea can not be sprayed out, finally, the tail gas treatment is invalid, and the content of discharged pollutants is rapidly increased. The thawing scheme can also be that the engine adopts an electric heating method to thaw urea, but the electric heating requires extra energy consumption, so that the vehicle oil consumption in the thawing process is improved.
Thus, according to a first aspect of the present utility model, an ammonia supply system of an SCR system is proposed, as shown in fig. 1 and 2, comprising a main urea tank 10, a secondary urea tank 40, a main pipette 20, a secondary pipette 50, a pipette control valve 70, a urea pump 90, a liquid replenishing pipe 80, a first heating assembly 30, a second heating assembly 60 and a controller, the first heating assembly 30 comprising a water circulation heating pipe 301 and a gas circulation heating pipe 302, the second heating assembly 60 comprising an electric heating wire 601, the volume of the main urea tank 10 being larger than the volume of the secondary urea tank 40; wherein the bottom of the main urea tank 10 is higher than the bottom of the auxiliary urea tank 40, and two ends of the liquid supplementing pipe 80 are respectively connected to the bottom of the main urea tank 10 and the bottom of the auxiliary urea tank 40; one end of the main liquid suction pipe 20 is arranged in the main urea tank 10, and the other end is connected with the liquid suction control valve 70; one end of the secondary pipette 50 is disposed inside the secondary urea tank 40, and the other end is connected to the pipette control valve 70; the water circulation heating pipe 301 and the gas circulation heating pipe 302 are inserted into the main urea tank 10, and the second heating assembly 60 is inserted into the sub urea tank 40; the controller is connected with the liquid suction control valve 70 and is used for outputting a liquid suction control instruction to change the working condition of the liquid suction control valve 70; the urea pump 90 is connected to the liquid suction control valve 70.
In this embodiment, when the controller determines that the engine water temperature is low, the main urea tank 10 cannot meet the ammonia supply requirement of the SCR system, the electric heating wire 601 in the auxiliary urea tank 40 is controlled to be started, the liquid suction control valve 70 is controlled to be turned on the auxiliary liquid suction pipe 50, the main liquid suction pipe 20 is turned off, after the engine works for a period of time, the controller determines whether the engine water temperature meets the ammonia supply requirement of the SCR system again, if the engine water temperature is high at this time, the controller controls the liquid suction control valve 70 to turn off the auxiliary liquid suction pipe 50 at this time, so that the main liquid suction pipe 20 is turned on, and the emission rise caused by insufficient ammonia supply is avoided; meanwhile, for the region which is at a lower temperature for a long time, as the volume of the auxiliary urea box 40 is smaller and the urea consumption is faster, the bottom of the main urea box 10 is set to be higher than the bottom of the auxiliary urea box 40, and the liquid supplementing pipe 80 is arranged between the main urea box 10 and the auxiliary urea box 40, and due to the pressure difference, when the urea liquid in the auxiliary urea box 40 is less, the urea liquid in the main urea box 10 can be automatically supplemented to the auxiliary urea box 40, the times of adding urea into the auxiliary urea box 40 are reduced, different heating modes are determined through different vehicle working conditions, and meanwhile, the gas circulation heating pipe 302 for thawing the urea liquid by utilizing the exhaust gas waste heat is increased, so that the ammonia supply amount of an SCR system is ensured, and the energy utilization efficiency is improved.
As an exemplary embodiment, referring to fig. 3, the water circulation heating pipe 301 is connected to the engine, the gas circulation heating pipe 302 is connected to the exhaust pipe of the SCR system, and the portions of the water circulation heating pipe 301 and the gas circulation heating pipe 302 inserted into the main urea tank 10 are both open and are disposed side by side below the liquid level in the main urea tank 10. One end of the main liquid suction pipe 20, which is disposed inside the main urea tank 10, is disposed between the water circulation heating pipe 301 and the gas circulation heating pipe 302.
In this embodiment, the water circulation heating pipe 301 performs heat exchange with urea solution in the main urea tank 10 through water in the engine water tank, so as to defrost the urea solution, the gas circulation heating pipe 302 performs heat exchange with urea solution through exhaust gas processed by the SCR system, and the urea solution is defrosted at a higher speed in a dual heating manner, so as to implement urea injection to the SCR system, and reduce NO X And the exhaust gas is discharged, so that the national standard requirement is met.
Wherein when the urea solution is in a frozen state, the water circulation heating pipe 301 and the gas circulation heating pipe 302 are operated, and the urea solution is preferably thawed near the water circulation heating pipe 301 and the gas circulation heating pipe 302, so that the main liquid suction pipe 20 can be arranged in parallel for water circulation heatingBetween the pipe 301 and the gas circulation heating pipe 302, urea solution which is thawed firstly is sprayed, the urea requirement of the SCR system is met, the ammonia supply function is ensured, and NO is reduced X And (5) discharging the waste gas.
For example, as shown in fig. 4, besides the water circulation heating pipe 301 and the gas circulation heating pipe 302 are arranged side by side, one of the heating pipes may be arranged at the periphery of the other heating pipe, and the main liquid suction pipe 20 is arranged in the middle of the inner heating pipe, so that the melting of urea liquid can be improved, the ammonia supplying function is ensured, and NO is reduced by the arrangement of this way X And (5) discharging the waste gas.
As an exemplary embodiment, referring to fig. 5, the electric heating wire 601 is connected to a storage battery, and a portion of the electric heating wire 601 inserted into the sub urea tank 40 is opened to form a receiving portion. One end of the secondary pipette 50 disposed inside the secondary urea tank 40 is disposed inside the accommodating section.
In this embodiment, the electric heating wire 601 converts electric energy into heat energy to heat urea solution in the main urea tank 10, so as to defrost the urea solution, when the temperature of the engine water is low and the urea solution which is melted and frozen is slow, the urea solution can defrost at a faster speed by starting the electric heating mode, urea in the auxiliary urea tank 40 is firstly sprayed, after the engine runs for a period of time, the engine is combined with the temperature of the water in the engine water tank to judge whether to stop the electric heating, and the water in the engine water tank is switched to be heated, so that NO is reduced X And the exhaust gas is discharged, so that the national standard requirement is met.
When the urea solution is in a frozen state, the part which is thawed preferentially is the urea solution close to the electric heating wire 601 after the electric heating wire 601 works, so that the auxiliary liquid suction pipe 50 can be arranged in the accommodating part of the electric heating wire 601 to spray the urea solution thawed earlier, thereby meeting the urea requirement of the SCR system, ensuring the ammonia supply function and reducing NO X And (5) discharging the waste gas.
As an exemplary embodiment, the ammonia supply system further includes: the liquid level sensor is electrically connected with the controller, is arranged in the main urea box 10, and is used for detecting the liquid level height information in the main urea box 10 and outputting the liquid level height information to the controller.
In this embodiment, the corresponding height of the main liquid suction pipe 20 in the main urea tank 10 may be obtained by measuring in advance, and in actual operation, the liquid level sensor detects the height of the urea liquid in the main urea tank 10 in real time, so as to avoid that the liquid level of the urea liquid is lower than the liquid suction port of the main liquid suction pipe 20, so that the main liquid suction pipe 20 cannot suck out the urea liquid, the SCR system cannot inject urea, and the emission is increased.
As an exemplary embodiment, further comprising a first temperature sensor 120 and a second temperature sensor 130 electrically connected to the controller, respectively; the detection end of the first temperature sensor 120 is disposed in the main urea tank 10 and inserted below the liquid level, and is configured to detect first temperature information in the main urea tank 10 and output the first temperature information to a controller; the detection end of the second temperature sensor 130 is disposed in the secondary urea tank 40 and inserted below the liquid level, and is configured to detect second temperature information in the secondary urea tank 40 and output the second temperature information to the controller.
In this embodiment, the first temperature sensor 120 and the second temperature sensor 130 are respectively inserted into the urea solution in the main urea tank 10 and the auxiliary urea tank 40 to obtain accurate urea solution temperature, the first temperature information and the second temperature information sent to the controller by the first temperature sensor 120 and the second temperature sensor 130 are analyzed and decoded by the controller to determine whether the urea solution in the main urea tank 10 and the auxiliary urea tank 40 is frozen, if so, the electric heating wire 601, the water circulation heating pipe 301 and the gas circulation heating pipe 302 are controlled to be heated simultaneously, so that the auxiliary urea tank can supply ammonia rapidly, the ammonia supply requirement of the SCR system is ensured, and NO is reduced X And the discharge amount of the exhaust gas.
As an exemplary embodiment, the ammonia supply system further includes: and the third temperature sensor is electrically connected with the controller, is arranged in front of the engine thermostat and is used for detecting the water temperature of the engine and outputting the water temperature of the engine to the controller.
In this embodiment, after the engine is started, the controller determines whether the urea solution in the main urea tank 10 can be melted quickly by using the basis of the ammonia supply of the auxiliary urea tank 40 as the engine water temperature, and completes the ammonia supply of the SCR system, so the controller needs to obtain the engine water temperature detected by the third temperature sensor, and further determines whether the current water temperature can melt the urea solution in the main urea tank 10 quickly, thereby realizing the ammonia supply.
As an exemplary embodiment, the ammonia supply system further includes: the first control switch 100 is electrically connected with the controller, is arranged on the first heating component 30, and is used for receiving a first control instruction sent by the controller so as to change the working condition of the first heating component 30; the second control switch 110 is electrically connected to the controller, and is disposed on the second heating assembly 60, and configured to receive a second control instruction sent by the controller to change a working condition of the second heating assembly 60.
In this embodiment, when the engine is in operation, if the temperatures detected by the first temperature sensor 120 and the second temperature sensor 130 indicate that the urea solution in the main urea tank 10 and the auxiliary urea tank 40 is not frozen, heating of the urea solution is not needed, and at this time, the controller controls the first control switch 100 and the second control switch 110 to be turned off; when the controller determines that the urea solution is frozen and the water temperature of the engine is low, the first control switch 100 can be controlled to be opened, and the second control switch 110 can be controlled to be closed, so that the urea solution is dissolved in an electric heating mode; when it is determined that the urea solution is frozen and the engine water temperature is sufficient to meet the ammonia supply demand of the SCR system, the second control switch 110 may be controlled to be opened, and the first control switch 100 may be controlled to be closed, so that heat exchange with the urea solution is achieved with the residual heat of the exhaust gas and the engine water temperature. Through switching different heating strategies to different urea liquid states and using waste gas waste heat to dissolve urea heat, the utilization rate of energy sources can be improved to a greater extent.
According to a second aspect of the present utility model, there is also provided a vehicle comprising an ammonia supply system of the SCR system according to any one of the embodiments described above.
Thus far, the technical solution of the present disclosure has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the protective scope of the present disclosure is not limited to only these specific embodiments. The technical solutions in the above embodiments may be split and combined by those skilled in the art without departing from the technical principles of the present disclosure, and equivalent modifications or substitutions may be made to related technical features, which all fall within the scope of the present disclosure.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (10)
1. The ammonia supply system of the SCR system is characterized by comprising a main urea tank, an auxiliary urea tank, a main liquid suction pipe, an auxiliary liquid suction pipe, a liquid suction control valve, a urea pump, a liquid supplementing pipe, a first heating component, a second heating component and a controller, wherein the first heating component comprises a water circulation heating pipe and a gas circulation heating pipe, the second heating component comprises an electric heating wire, and the volume of the main urea tank is larger than that of the auxiliary urea tank; wherein,,
the bottom of the main urea box is higher than the bottom of the auxiliary urea box, and two ends of the liquid supplementing pipe are respectively connected to the bottom of the main urea box and the bottom of the auxiliary urea box;
one end of the main liquid suction pipe is arranged in the main urea box, and the other end of the main liquid suction pipe is connected with the liquid suction control valve;
one end of the auxiliary liquid suction pipe is arranged in the auxiliary urea box, and the other end of the auxiliary liquid suction pipe is connected with the liquid suction control valve;
the water circulation heating pipe and the gas circulation heating pipe are inserted into the main urea tank, and the second heating component is inserted into the auxiliary urea tank;
the controller is connected with the imbibition control valve and is used for outputting imbibition control instructions to change the working condition of the imbibition control valve;
the urea pump is connected with the liquid suction control valve.
2. The ammonia supply system of the SCR system as defined in claim 1, wherein the water circulation heating pipe is connected with the engine, the gas circulation heating pipe is connected with an exhaust pipe of the SCR system, and the water circulation heating pipe and the gas circulation heating pipe are both open-ended at a portion inserted into the main urea tank and are arranged side by side below a liquid level in the main urea tank.
3. The ammonia supply system of an SCR system according to claim 2, wherein an end of the main pipette provided inside the main urea tank is provided between the water circulation heating pipe and the gas circulation heating pipe.
4. The ammonia supply system of the SCR system according to claim 1, wherein the electric heating wire is connected to the storage battery, and a portion of the electric heating wire inserted into the sub urea tank is opened to form a receiving portion.
5. The ammonia supply system of an SCR system according to claim 4, wherein an end of the secondary pipette provided inside the secondary urea tank is provided in the accommodating portion.
6. The ammonia supply system of an SCR system of claim 1, further comprising:
the liquid level sensor is electrically connected with the controller, is arranged in the main urea box, and is used for detecting the liquid level height information in the main urea box and outputting the liquid level height information to the controller.
7. The ammonia supply system of the SCR system of claim 6, further comprising a first temperature sensor and a second temperature sensor electrically connected to the controller, respectively; wherein,,
the detection end of the first temperature sensor is arranged in the main urea box, is inserted below the liquid level, and is used for detecting first temperature information in the main urea box and outputting the first temperature information to the controller;
the detection end of the second temperature sensor is arranged in the auxiliary urea box, is inserted below the liquid level, and is used for detecting second temperature information in the auxiliary urea box and outputting the second temperature information to the controller.
8. The ammonia supply system of the SCR system of claim 7, further comprising:
and the third temperature sensor is electrically connected with the controller, is arranged in front of the engine thermostat and is used for detecting the water temperature of the engine and outputting the water temperature of the engine to the controller.
9. The ammonia supply system of an SCR system of claim 8, further comprising:
the first control switch is electrically connected with the controller and is arranged on the first heating component and used for receiving a first control instruction sent by the controller so as to change the working condition of the first heating component;
and the second control switch is electrically connected with the controller, is arranged on the second heating component and is used for receiving a second control instruction sent by the controller so as to change the working condition of the second heating component.
10. A vehicle, characterized by an ammonia supply system comprising an SCR system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321044077.XU CN219548959U (en) | 2023-04-26 | 2023-04-26 | Ammonia supply system of SCR system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321044077.XU CN219548959U (en) | 2023-04-26 | 2023-04-26 | Ammonia supply system of SCR system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219548959U true CN219548959U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321044077.XU Active CN219548959U (en) | 2023-04-26 | 2023-04-26 | Ammonia supply system of SCR system and vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN219548959U (en) |
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2023
- 2023-04-26 CN CN202321044077.XU patent/CN219548959U/en active Active
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