CN210090035U - Quick verifying device for automobile urea nozzle crystallization test - Google Patents
Quick verifying device for automobile urea nozzle crystallization test Download PDFInfo
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- CN210090035U CN210090035U CN201920921156.1U CN201920921156U CN210090035U CN 210090035 U CN210090035 U CN 210090035U CN 201920921156 U CN201920921156 U CN 201920921156U CN 210090035 U CN210090035 U CN 210090035U
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- urea
- urea nozzle
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- adapter
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Abstract
The utility model relates to a quick verification device for a vehicle urea nozzle crystallization test, which comprises an air heat source, a connecting pipeline, a nozzle mounting adapter, a urea nozzle, a urea tank and a controller; the air heat source is tightly and hermetically connected with the urea nozzle adapter through an exhaust pipeline; at least one urea nozzle mounting opening is reserved on the urea nozzle adapter, and the urea nozzle is mounted at the urea nozzle mounting opening on the urea nozzle adapter; the urea water solution inlet of the urea nozzle is communicated with the urea tank, the wire harness plug connector interface is connected with the control signal output end of the controller, and the nozzle cooling liquid inlet is connected with an external water source. The utility model discloses can simulate real car urea injection process, realize the quick verification evaluation of urea injection process reliability, the whole car carries on relatively and verifies, both can shorten the cycle, also can reduce development cost by a wide margin.
Description
Technical Field
The utility model relates to a diesel vehicle urea nozzle crystallization verifying attachment, especially a quick verification hardware device that is used for comparing urea injection product and matches and evades crystallization risk effect.
Background
In recent years, emissions regulations for diesel commercial vehicles in China have become increasingly stringent due to environmental and energy conservation pressures. From the fourth phase of China, the mainstream technology of the post-treatment of the diesel engine is mainly SCR. In the SCR system, a urea system is required to timely and accurately inject urea aqueous solution into an exhaust pipeline, and the atomization effect of a urea nozzle influences the exhaust treatment efficiency of the aftertreatment system. The urea nozzle crystallization problem often frequently appears in the actual use process of finished automobile products, and the abnormal injection is caused, so that the emission exceeds the standard or the power of the finished automobile is insufficient. The repeated maintenance caused by the method not only delays the use of the vehicle by the user, but also causes serious influence on the brand of the whole vehicle factory due to complaints and fermentation of the user.
One of the main reasons for the above-mentioned problems of the urea nozzle is that during product development, the reliability of the urea system is mainly based on a whole vehicle carrying test, the period is long, the cost is high, a quick and effective evaluation means for the reliability of the nozzle in the working process is not available, the problems cannot be found in time, and then the improvement scheme is effectively evaluated and verified.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a quick verifying attachment of automobile-used urea nozzle crystallization test.
In order to solve the technical problem, the rapid verification device for the vehicle urea nozzle crystallization test comprises an air heat source, an exhaust pipeline, a urea nozzle adapter, a urea nozzle, a urea tank and a controller; the air heat source is tightly and hermetically connected with the urea nozzle adapter through an exhaust pipeline; at least one urea nozzle mounting opening is reserved on the urea nozzle adapter, and the urea nozzle is mounted at the urea nozzle mounting opening on the urea nozzle adapter; the urea water solution inlet of the urea nozzle is communicated with the urea tank, the wire harness plug connector interface is connected with the control signal output end of the controller, and the nozzle cooling liquid inlet is connected with an external water source.
And a urea nozzle mounting opening is reserved on the side wall of the urea nozzle adapter, and the urea nozzle is vertically mounted on the urea nozzle mounting opening on the side wall of the urea nozzle adapter.
A urea nozzle mounting port is reserved on the inclined wall of the tail gas inlet side of the urea nozzle adapter; the urea nozzle is obliquely arranged on the urea nozzle mounting port on the inclined wall on the tail gas inlet side.
The air heat source adopts a hot air gun, and a gun nozzle of the hot air gun is connected with an exhaust pipeline.
The end of the exhaust pipeline is fastened and hermetically connected with the urea nozzle adapter by a V-shaped clamping ring.
The urea tank adopts a pressure accumulation type urea tank.
The beneficial effects of the utility model reside in that: the nozzle adapter modified by the actual vehicle part is combined with the air heat source, and the simulation of the tail gas state of the diesel engine is realized by controlling the air temperature and the air flow of the air heat source; the pressure of the urea tank and the injection driving current of the nozzle are controlled to simulate the injection process of a real vehicle, so that the reliability of the urea injection process can be quickly verified and evaluated. Compared with the vehicle carrying verification, the period can be shortened, and the development cost can be greatly reduced.
Drawings
Fig. 1 is a schematic diagram of the structure of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of the structure of embodiment 2 of the present invention.
In the figure, 1, an air heat source, 2, an exhaust pipeline, 3, a V-shaped clamping ring, 4, a urea nozzle adapter, 5, a urea nozzle, 51, a urea water solution inlet, 52, a wiring harness plug connector interface, 53, a nozzle cooling liquid inlet, 6 a urea tank and 7 a controller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the utility model discloses a quick verifying attachment of automobile-used urea nozzle crystallization test includes air heat source 1, exhaust pipe 2, urea nozzle adapter 4, urea nozzle 5, urea jar 6 and controller 7.
The air heat source 1 can adopt the existing industrial hot air gun product, and the simulation of the tail gas state of the diesel engine can be realized by controlling the air temperature and the air flow of the air heat source 1; the specification of the exhaust pipeline 2 is consistent with that of a real vehicle, and a gun nozzle of the air heat source 1 is connected with the exhaust pipeline 2; the end of the exhaust pipeline 2 is tightly and hermetically connected with a urea nozzle adapter 4 by adopting a standard V-shaped clamping ring 3; the urea nozzle adapter 4 is of the same structure as the existing postprocessor on the whole vehicle; depending on the position of the urea nozzle on different actual vehicles, a plurality of urea nozzle mounting openings may be reserved in the urea nozzle adapter 4, for example, two urea nozzle mounting openings may be reserved in the side wall of the urea nozzle adapter 4 and in the exhaust gas inlet side inclined wall. The air heat source 1 and the urea nozzle adapter 4 are combined together by simulating a real vehicle assembly relationship, the specific operation condition of the diesel engine can be simulated by controlling the temperature and the flow of air, and quick evaluation hardware can be provided for the reliability verification of the urea nozzle injection process. According to the purpose of the test, the universal design can be realized by replacing different urea nozzle adapters 4 to match with the exhaust pipeline 2 on the air heat source side.
The urea nozzle 5 can simulate a urea nozzle mounting port vertically mounted on the side wall of the urea nozzle adapter 4 at the actual urea nozzle mounting position or a urea nozzle mounting port obliquely mounted on the inclined wall of the tail gas inlet side; the urea tank 6 is communicated with a urea aqueous solution inlet 51 of the urea nozzle 5 through a pipeline and provides a stable urea aqueous solution, and a control signal output end of the controller 7 is connected with a wiring harness plug connector interface 52 of the urea nozzle 5 to provide a nozzle injection driving current, so that a real vehicle injection process can be simulated, and flexible control from minimum to maximum injection amount is realized; the nozzle coolant inlet 53 of the urea nozzle 5 is connected to an external water source (tap or water pump) to supply coolant at a set temperature and flow rate. A manual ball valve can be connected between the nozzle cooling liquid inlet and a water source in series to control the on-off of the cooling liquid.
The urea tank 6 may use a pressure accumulation type urea tank of the prior art.
The air heat source can set corresponding flow and temperature according to the verified working condition of the engine; the connection mechanism of the urea nozzle is consistent with the actual vehicle, and the air flow state and the temperature distribution in the verification process are ensured to be consistent with the actual vehicle as much as possible.
The utility model discloses embodied the thinking that simulation real car hardware system and rapid capability built on the whole to effective boundary condition simplifies, can realize quick test and verification to urea nozzle crystallization problem.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner, and the technical features of the present invention can be reselected and combined to form a new embodiment, as long as the method concept and technical solution of the present invention are adopted to perform various insubstantial improvements; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (6)
1. A quick verification device for a vehicle urea nozzle crystallization test is characterized by comprising an air heat source (1), an exhaust pipeline (2), a urea nozzle adapter (4), a urea nozzle (5), a urea tank (6) and a controller (7); the air heat source (1) is tightly and hermetically connected with the urea nozzle adapter (4) through the exhaust pipeline (2); at least one urea nozzle mounting opening is reserved on the urea nozzle adapter (4), and the urea nozzle (5) is mounted at the urea nozzle mounting opening on the urea nozzle adapter (4); a urea water solution inlet (51) of the urea nozzle (5) is communicated with the urea tank (6), a wiring harness plug connector interface is connected with a control signal output end of the controller (7), and a nozzle cooling liquid inlet is connected with an external water source.
2. The rapid verification device for the vehicle urea nozzle crystallization test according to claim 1, wherein a urea nozzle mounting opening is reserved on a side wall of the urea nozzle adapter (4), and the urea nozzle (5) is vertically mounted on the urea nozzle mounting opening on the side wall of the urea nozzle adapter (4).
3. The rapid verification device for the vehicle urea nozzle crystallization test according to claim 1, wherein a urea nozzle mounting port is reserved on the inclined wall of the tail gas inlet side of the urea nozzle adapter (4); the urea nozzle (5) is obliquely arranged on the urea nozzle mounting port on the exhaust gas inlet side inclined wall.
4. The device for rapidly verifying the vehicle urea nozzle crystallization test according to claim 1, wherein the air heat source (1) is a hot air gun, and a gun nozzle of the hot air gun is connected with the exhaust pipeline (2).
5. The device for rapidly verifying the crystallization test of the urea nozzle for the vehicle as claimed in claim 1, wherein the end of the exhaust pipeline (2) is fastened and hermetically connected with the urea nozzle adapter (4) by a V-shaped snap ring (3).
6. The device for rapidly verifying the crystallization test of the urea nozzle for the vehicle as claimed in claim 1, wherein the urea tank (6) is a pressure accumulation type urea tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921156.1U CN210090035U (en) | 2019-06-19 | 2019-06-19 | Quick verifying device for automobile urea nozzle crystallization test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921156.1U CN210090035U (en) | 2019-06-19 | 2019-06-19 | Quick verifying device for automobile urea nozzle crystallization test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210090035U true CN210090035U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920921156.1U Active CN210090035U (en) | 2019-06-19 | 2019-06-19 | Quick verifying device for automobile urea nozzle crystallization test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210090035U (en) |
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2019
- 2019-06-19 CN CN201920921156.1U patent/CN210090035U/en active Active
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