CN210370873U - Air-assisted urea pump detection device - Google Patents
Air-assisted urea pump detection device Download PDFInfo
- Publication number
- CN210370873U CN210370873U CN201921420945.3U CN201921420945U CN210370873U CN 210370873 U CN210370873 U CN 210370873U CN 201921420945 U CN201921420945 U CN 201921420945U CN 210370873 U CN210370873 U CN 210370873U
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- urea pump
- air
- assisted urea
- assisted
- control
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000004202 carbamide Substances 0.000 title claims abstract description 90
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000004891 communication Methods 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 11
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 7
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides a gas-assisted urea pump detection device, it includes the singlechip, controls and display panel and CAN communication chip, wherein: the control and display panel is connected to the singlechip; one end of the CAN communication chip is connected to the single chip microcomputer, and the other end of the CAN communication chip is in signal connection with a control module of the gas-assisted urea pump to be detected; the control and display panel is configured to generate a control instruction, the single chip microcomputer is configured to transmit the control instruction to the control module of the air-assisted urea pump through the CAN communication chip so as to drive the air-assisted urea pump to act, the single chip microcomputer is further configured to obtain the operation parameters of the air-assisted urea pump output by the control module of the air-assisted urea pump through the CAN communication chip, and the control and display panel is further configured to display the operation parameters of the air-assisted urea pump. The utility model discloses accomplished the detection to gas-assisted urea pump under the prerequisite of waiting to detect the gas-assisted urea pump not lifting off, it has reduced the detection cost of urea pump, has promoted detection efficiency.
Description
Technical Field
The utility model belongs to the technical field of the car emission technique and specifically relates to a gas-assisted urea pump detection device is related to.
Background
In order to protect the environment, relevant regulations for controlling the exhaust emission of automobile exhaust are successively issued by countries in the world, and the increasingly strict emission regulations make it difficult for a simple internal purification technology to meet the requirements of the regulations, and the internal purification technology must be assisted by an external post-treatment technology. In the aspect of off-board technical treatment, at present, various diesel engine companies and whole factories in China mainly adopt a selective catalytic reduction system technology to control the emission of nitrogen oxides of diesel engines, and the selective catalytic reduction system needs to adopt a urea pump to extract urea solution from a urea box and inject the urea solution into an exhaust pipe with certain precision.
The air-assisted urea pump is a mainstream urea pump structure and comprises a control module, a pipeline, and components such as a motor, an electromagnetic valve and a one-way valve which are connected to the pipeline, wherein the components connected to the pipeline are easily blocked by solid urea separated out from a urea solution, so that the air-assisted urea pump fails. Therefore, frequent testing of the air-assisted urea pump is required to locate its damage or to periodically clean its interior. In the prior detection process, the whole air-assisted urea pump generally needs to be disassembled, and an expensive and complex detection platform is adopted for detection, so that the detection cost is high, and the detection efficiency is low.
In view of the above, there is a need for a detection device that is compact and portable, and that can detect a failure of an air-assisted urea pump without removing the air-assisted urea pump.
SUMMERY OF THE UTILITY MODEL
In order to achieve the technical object, the utility model provides a urea pump detection device, its concrete technical scheme as follows:
the utility model provides a urea pump detection device, its includes the singlechip, controls and display panel and CAN communication chip, wherein:
the control and display panel is connected to the singlechip;
one end of the CAN communication chip is connected to the single chip microcomputer, and the other end of the CAN communication chip is in signal connection with a control module of the gas-assisted urea pump to be detected;
the control and display panel is configured to generate a control instruction, the single chip microcomputer is configured to transmit the control instruction to the control module of the air-assisted urea pump through the CAN communication chip so as to drive the air-assisted urea pump to act, the single chip microcomputer is further configured to obtain the operation parameters of the air-assisted urea pump output by the control module of the air-assisted urea pump through the CAN communication chip, and the control and display panel is further configured to display the operation parameters of the air-assisted urea pump.
In some embodiments, the power conversion circuit further comprises a first power conversion module and a second power conversion module, wherein: the input end of the first power conversion module is connected to a power supply of a vehicle, the output end of the first power conversion module is respectively connected with the CAN communication chip and the input end of the second power conversion module, and the output end of the second power conversion module is connected with the single chip microcomputer.
In some specific embodiments, the first power conversion module employs a voltage regulation chip with model number LM2596, which is used to convert a 24V voltage signal output from a power supply of a vehicle into a 5V voltage signal; the second power conversion module adopts a voltage regulation chip with model AMS1117, and is used for converting the 5V voltage signal output by the first power conversion module into a 3.3 voltage signal.
In some specific embodiments, the single chip microcomputer adopts a single chip microcomputer chip with the model of STM32F103C8T6, and the CAN communication chip adopts a CAN communication chip with the model of Tja 1050.
The utility model provides a urea pump detection device, it can accomplish the fault detection to the air-assisted urea pump with the definite damage position under the prerequisite that does not lift the air-assisted urea pump off. Therefore, the detection cost of the urea pump is reduced, and the detection efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings which are needed in the embodiments and are practical will be briefly described below and will be obvious, 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 the drawings without creative efforts. Wherein,
FIG. 1 is a schematic diagram of a typical urea pump;
FIG. 2 is a schematic diagram illustrating the operation of the urea pump of FIG. 1 in an injection mode of operation;
FIG. 3 is a schematic view of the operating principle of the urea pump of FIG. 1 in a pre-injection operating state;
fig. 4 is a schematic structural diagram of a urea pump detection device provided by an embodiment of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 shows a schematic structural diagram of a typical air-assisted urea pump 100, where the air-assisted urea pump 100 shown in fig. 1 includes a mixing chamber 101, and the mixing chamber 101 is provided with a liquid inlet, a gas inlet, and an injection port, where: a liquid inlet pipeline 102 is connected to a liquid inlet of the mixing cavity 101, and a driving motor 1021 and a first one-way valve are arranged on the liquid inlet pipeline 102; an air inlet pipe 103 is connected to an air inlet of the mixing chamber 101, and an electromagnetic valve 1031 and a second one-way valve are arranged on the air inlet pipe 103; an injection pipe 104 is provided on the injection pipe of the mixing chamber 101. In addition, the liquid inlet pipeline 102 is also connected with a liquid return pipeline 105, and the liquid return pipeline 105 is provided with a linkage valve 1051. The air-assisted urea pump 100 has two operating states, namely an injection operating state and a pre-injection operating state.
As shown in fig. 2, the injection operation state: the electromagnetic valve 1031 is opened, and the linkage valve 1051 is closed. The motor 1021 is started, the urea solution enters the mixing cavity 101 through the liquid inlet pipeline 102, the synchronous high-pressure air enters the mixing cavity 101 through the air inlet pipeline 103, and the urea solution is pressurized in the mixing cavity 101 and then is finally sprayed out through the spraying pipeline 104. As shown in fig. 3, the priming operating state: the electromagnetic valve 1031 is closed, and the linkage valve 1051 is opened. When the motor 1021 is started, the urea solution enters the liquid pipe 102, flows through the motor 1021, and then flows out through the liquid return pipe 105.
A control module is integrated in the air-assisted urea pump 100, and the control module controls the actions of components such as the electromagnetic valve 1031 and the motor 1021. The control module is provided with a CAN communication module which CAN communicate with an external device through the CAN communication module to realize information interaction.
As shown in fig. 4, in an embodiment, the present invention provides an air-assisted urea pump detecting device 200, which includes a single chip 201, a control and display panel 202 and a CAN communication chip 203. Wherein: the control and display panel 202 is connected to the single chip 201. One end of the CAN communication chip 204 is connected to the single chip microcomputer 201, and the other end of the CAN communication chip 204 is in signal connection with a control module of the gas-assisted urea pump 100 to be detected.
In some specific embodiments, the single chip microcomputer 201 adopts a single chip microcomputer chip with the model of STM32F103C8T6, and the CAN communication chip 204 adopts a CAN communication chip with the model of Tja 1050.
The control and display panel 202 is configured to generate a control instruction, and the single chip microcomputer 201 is configured to transmit the control instruction acquired from the control and display panel 202 to a control module of the to-be-detected air-assisted urea pump 100 through the CAN communication chip 204 so as to drive the air-assisted urea pump 100 to perform corresponding actions.
The single-chip microcomputer 201 is further configured to obtain the operation parameters of the air-assisted urea pump 100 output by the control module of the air-assisted urea pump 100 through the CAN communication chip 204, and the control and display panel 202 is further configured to display the operation parameters of the air-assisted urea pump 100.
The utility model discloses a CAN communication chip 203 with wait to detect the gas-assisted urea pump 100 and establish communication connection to the control of the gas-assisted urea pump 100 of detection is treated in the realization, makes the gas-assisted urea pump 100 of waiting to detect carry out corresponding action. By observing the operation condition of the gas-assisted urea pump 100 to be detected and acquiring the operation parameters of the gas-assisted urea pump 100 to be detected, the fault detection of the gas-assisted urea pump 100 to be detected can be realized.
Referring to fig. 1 and 4, in some embodiments, the control and display panel 202 is provided with a plurality of control buttons and an LCD display, each control button corresponds to a control command, so as to control the air-assisted urea pump 100 to be tested to perform corresponding actions. By operating these buttons, the air-assisted urea pump 100 to be tested can be controlled to enter the corresponding working state, so as to realize the detection of the relevant components. For example:
and pressing one of the control buttons to control the gas-assisted urea pump 100 to be detected to enter a pre-injection working state. At this time, if the liquid can smoothly enter the liquid inlet pipe 102 and be discharged through the liquid return pipe 105, it is preliminarily determined that the motor 1021 of the air-assisted urea pump 100 to be detected can normally operate, and the linkage valve 1051 and the first check valve are not blocked, otherwise, it indicates that the above components have a fault. Meanwhile, further judgment can be performed by observing the pump state, the motor speed and the pump temperature data displayed on the control and display panel 202.
And pressing another control button to control the air-assisted urea pump 100 to be detected to enter a spraying working state. At this time, the ejection of the mixing chamber 101 was observed. If the mixed liquid can be smoothly ejected from the ejection pipe 104. The solenoid valve 1031 of the air-assisted urea pump 100 to be detected is preliminarily judged to be blocked, the linkage valve 1051 is well sealed, otherwise, the components are indicated to have faults. Meanwhile, further judgment can be made by observing parameters such as the pump state, the motor speed, the pump temperature, the injection amount, and the like displayed on the control and display panel 202.
It is thus clear that use the utility model provides a urea pump detection device 200, it can accomplish the fault detection to the air-assisted urea pump in order to confirm to damage the position under the prerequisite of not lifting the air-assisted urea pump that treats the detection to reduce the detection cost of urea pump, promote detection efficiency.
Furthermore, the utility model discloses a urea pump detection device 200 can realize the maintenance to the air-assisted urea pump. For example, when the parts in the liquid inlet pipeline and the liquid outlet pipeline of the air-assisted urea pump are blocked by the solid urea. Can lead to the feed liquor pipeline of air-assisted urea pump to the hot water in through external pipeline, then pass through the utility model discloses, control air-assisted urea pump gets into to annotate operating condition in advance, and hot water gets into in order to dissolve the solid urea in it to feed liquor pipeline, the play liquid pipeline.
Continuing to refer to fig. 4, in order to realize getting electricity nearby, the urea pump detecting device 200 of the present invention further includes a power conversion circuit, which includes a first power conversion module 205 and a second power conversion module 206, wherein: the input end of the first power conversion module 205 is connected to a power supply 300 of a vehicle, the output end of the first power conversion module 205 is connected to the input ends of the CAN communication chip 204 and the second power conversion module 206, respectively, and the output end of the second power conversion module 206 is connected to the single chip microcomputer 201.
In some embodiments, the first power conversion module 205 employs a voltage regulation chip model LM2596, which is used to convert the voltage signal output from the power supply 200 of the vehicle into a 5V voltage signal to power the CAN communication chip 204. The second power conversion module 206 is a voltage regulation chip of model AMS1117, and is configured to convert the 5V voltage signal output by the first power conversion module 205 into a 3.3 voltage signal, so as to supply power to the single chip microcomputer 201.
The invention has been described above with a certain degree of particularity and detail. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that may be made without departing from the true spirit and scope of the present invention are intended to be within the scope of the present invention. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.
Claims (4)
1. The utility model provides a gas-assisted urea pump detection device which characterized in that, it includes the singlechip, controls and display panel and CAN communication chip, wherein:
the control and display panel is connected to the singlechip;
one end of the CAN communication chip is connected to the single chip microcomputer, and the other end of the CAN communication chip is in signal connection with a control module of the gas-assisted urea pump to be detected;
the control and display panel is configured to generate a control instruction, the single chip microcomputer is configured to transmit the control instruction to the control module of the air-assisted urea pump through the CAN communication chip so as to drive the air-assisted urea pump to act, the single chip microcomputer is further configured to obtain the operation parameters of the air-assisted urea pump output by the control module of the air-assisted urea pump through the CAN communication chip, and the control and display panel is further configured to display the operation parameters of the air-assisted urea pump.
2. The air-assisted urea pump detection device of claim 1, further comprising a power conversion circuit comprising a first power conversion module and a second power conversion module, wherein: the input end of the first power conversion module is connected to a power supply of a vehicle, the output end of the first power conversion module is respectively connected with the CAN communication chip and the input end of the second power conversion module, and the output end of the second power conversion module is connected with the single chip microcomputer.
3. The gas-assisted urea pump test set of claim 2, wherein:
the first power supply conversion module adopts a voltage regulation chip with the model of LM2596 and is used for converting a 24V voltage signal output by a power supply of a vehicle into a 5V voltage signal;
the second power conversion module adopts a voltage regulation chip with model AMS1117, and is used for converting the 5V voltage signal output by the first power conversion module into a 3.3V voltage signal.
4. The gas-assisted urea pump test set of claim 3, wherein:
the single chip microcomputer adopts a single chip microcomputer chip with the model of STM32F103C8T6, and the CAN communication chip adopts a CAN communication chip with the model of Tja 1050.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420945.3U CN210370873U (en) | 2019-08-29 | 2019-08-29 | Air-assisted urea pump detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420945.3U CN210370873U (en) | 2019-08-29 | 2019-08-29 | Air-assisted urea pump detection device |
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| Publication Number | Publication Date |
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| CN210370873U true CN210370873U (en) | 2020-04-21 |
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| CN201921420945.3U Active CN210370873U (en) | 2019-08-29 | 2019-08-29 | Air-assisted urea pump detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653631A (en) * | 2021-09-18 | 2021-11-16 | 无锡威孚力达催化净化器有限责任公司 | Urea pump cleaning detection device, system and cleaning detection method |
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2019
- 2019-08-29 CN CN201921420945.3U patent/CN210370873U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653631A (en) * | 2021-09-18 | 2021-11-16 | 无锡威孚力达催化净化器有限责任公司 | Urea pump cleaning detection device, system and cleaning detection method |
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