National sixth urea sensor
By designing a National VI urea sensor, the stable connection between urea mass and temperature sensors, liquid level floats and other components with the urea tank is solved, and the problem of difficulty in disassembling and assembly of existing urea sensors is improved, and the maintenance efficiency is reduced.
Patent Information
- Application Number
- CN202420471922.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-12
AI Technical Summary
When existing urea sensors are installed in horizontal urea tanks, the operating space is limited, which leads to difficulty in disassembly and assembly, which increases labor costs and reduces maintenance efficiency.
A National VI urea sensor was designed. By setting up a urea mass and temperature sensor on the upper end of the urea box, and using components such as liquid level floats, circuit boards, urea suction pipe joints, vent pipes, water inlets and solenoid water valves, the stable connection between the sensor and the urea box is achieved, reducing the dependence on surrounding components.
This design improves the maintenance efficiency of urea sensors, reduces the disassembly and assembly of surrounding components, reduces the damage rate, and achieves the purpose of reducing costs and increasing efficiency.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensors, in particular to a urea sensor for National VI standard. Background Art
[0002] The more common urea tank layouts on the market are vertical and horizontal, and horizontal urea tanks are usually used. The battery is installed above the horizontal urea tank, and the urea tank is hung below the battery frame. Due to the constraints of the vehicle layout space, it is often inconvenient to disassemble and assemble the urea tank. The urea sensor on the market is usually installed horizontally at the top of the urea tank, between the battery and the urea tank. The operating space is greatly limited, making disassembly and assembly difficult. Each time, the upper battery needs to be removed before the urea sensor part can be inspected. This operation not only increases labor costs and reduces maintenance efficiency, but also affects people's overall vehicle experience, causing great inconvenience to users. Summary of the invention
[0003] The technical problem to be solved by the utility model is: in order to solve the problems existing in the above-mentioned background technology, a urea sensor for National VI is provided, which has a simple structure, effectively improves maintenance efficiency, reduces the disassembly and assembly of surrounding components, reduces the damage rate, and achieves the purpose of reducing costs and increasing efficiency.
[0004] The utility model adopts the following technical scheme to solve the technical problem: a National VI urea sensor, comprising a urea mass and temperature sensor, a urea filter, a liquid level float, a circuit board, a urea suction pipe joint, a vent pipe, a water inlet and an electromagnetic water valve; a urea mass and temperature sensor is arranged on one side of the urea filter, the other side of the urea filter is connected to the circuit board through a plurality of pipes, and a liquid level float is arranged on the pipe; the urea suction pipe joint is arranged on one side of the circuit board, and one end of the electromagnetic water valve is connected to the water inlet.
[0005] It is further defined that, in the above technical solution, one side of the electromagnetic water valve is connected to the first socket via a wire; such a design connects the external power supply via the first socket to ensure the controlled operation of the electromagnetic water valve.
[0006] It is further defined that in the above technical solution, the urea mass and temperature sensor includes a mass sensor and a temperature sensor; the mass concentration of urea can be quickly measured by the mass sensor; and the temperature can be quickly tested by the temperature sensor.
[0007] It is further defined that in the above technical solution, a connecting seat is arranged on one side of the circuit board, card slots are evenly arranged on the outer wall of the connecting seat, and the connecting seat is clamped on the urea tank port through the card slots; this ensures the stable arrangement of the overall urea sensor on the urea tank.
[0008] It is further defined that in the above technical solution, the urea tank port is opened at the upper end of the urea tank, and the urea tank port is arranged on one side of the battery bracket; such a design can perfectly separate the urea sensor from the urea tank and the battery bracket, thereby improving the convenience of subsequent maintenance.
[0009] It is further defined that, in the above technical solution, one side of the circuit board is connected to the second socket via a wire, thereby ensuring that the circuit board can be powered on and used.
[0010] It is further defined that, in the above technical solution, one-way valves are provided at the connections between the plurality of pipelines and the connection seats.
[0011] The beneficial effects of the utility model are as follows: the National VI urea sensor proposed by the utility model has a simple structure, effectively improves maintenance efficiency, reduces disassembly and assembly of surrounding components, reduces the damage rate, and achieves the purpose of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 This is a schematic diagram of the installation structure of the utility model Figure 1 ;
[0014] Figure 2 This is a schematic diagram of the installation structure of the utility model Figure 2 ;
[0015] Figure 3 This is a schematic diagram of the structure of the utility model Figure 1 ;
[0016] Figure 4 This is a schematic diagram of the structure of the utility model Figure 2 ;
[0017] Figure 5 This is a schematic diagram of the structure of the one-way valve in the utility model. Figure 1 ;
[0018] Figure 6 This is a schematic diagram of the structure of the one-way valve in the utility model. Figure 2 .
[0019] The numbers in the accompanying drawings are: 1. urea quality and temperature sensor, 2. urea filter, 3. liquid level float, 4. circuit board, 5. urea suction pipe joint, 6. ventilation pipe, 7. water inlet, 8. electromagnetic water valve, 9. pipeline, 10. first socket, 11. connecting seat, 12. slot, 13. urea tank, 14. second socket, 15. one-way valve, 16. nylon valve needle, 17. valve seat, 18. shell, 19. limit ring. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] In the present application, the urea quality and temperature sensor 1 is an integrated temperature sensor and a quality sensor; the liquid level float 3, the electromagnetic water valve 8, the urea tank 13 and the one-way valve 15 are purchased directly from the market according to specific models and then matched and installed for use.
[0022] In this application, the urea sensor head is placed sideways to ensure that the head mounting hole is above 1 / 2 of the vertical height of the urea tank, so as to ensure that there is no waste of urea when the whole is disassembled. During the disassembly and assembly process of the pipeline connected to it, the urea tank may be full and the liquid in the pipeline may flow back. To avoid this situation, a one-way valve 15 needs to be installed in the pipeline.
[0023] In the present application, the urea filter 2 is horizontally arranged in the urea tank 13, and the liquid level float 3 is installed in the vertical section of the pipeline 9, so that rapid liquid level detection can be achieved.
[0024] See Figure 5 and Figure 6 The arrows in the figure indicate the direction of liquid flow.
[0025] See Figure 1-6 The figure shows a urea sensor for National VI standard, including a urea mass and temperature sensor 1, a urea filter 2, a liquid level float 3, a circuit board 4, a urea suction pipe joint 5, a vent pipe 6, a water inlet 7 and an electromagnetic water valve 8; the urea mass and temperature sensor 1 is arranged on one side of the urea filter 2, and the other side of the urea filter 2 is connected to the circuit board 4 through a plurality of pipes 9, and the liquid level float 3 is arranged on the pipe 9; the urea suction pipe joint 5 is arranged on one side of the circuit board 4, and one end of the electromagnetic water valve 8 is connected to the water inlet 7.
[0026] Among them, one side of the electromagnetic water valve 8 is connected to the first socket 10 through a wire. The urea quality and temperature sensor 1 includes a quality sensor and a temperature sensor. A connection seat 11 is provided on one side of the circuit board 4, and a card slot 12 is evenly provided on the outer wall of the connection seat 11. The connection seat 11 is clamped on the urea tank port through the card slot. The urea tank port is opened on the side wall of the urea tank 13. One side of the circuit board 4 is connected to the second socket 14 through a wire. A check valve 15 is provided at the connection between the plurality of pipes 9 and the connection seat 11.
[0027] The operating principle of the country's six-purpose urea sensor is as follows:
[0028] The National VI urea sensor in this application is integrated with a mass sensor, a temperature sensor, and a liquid level sensor. The liquid level sensor is a float type, and the temperature sensor is located at the bottom of the whole. The top is integrated with a water cut-off solenoid valve to control the circulation heating of the coolant, and the urea is composed of a suction pipe and a return pipe to complete the circuit.
[0029] The urea quality sensor of the present application is integrated into the urea tank 13 to measure the mass concentration of urea; it communicates with the engine control unit through CAN communication. If the urea mass concentration does not meet the standard (the concentration is less than 25%), the ECU will report a fault. The principle of the urea quality sensor to detect the concentration is: ultrasonic waves have different propagation speeds in different media and different liquid concentrations; the ultrasonic performance under the standard urea 32.5% concentration liquid is used as a benchmark to identify and compare other liquid characteristics with it.
[0030] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A urea sensor for National VI, characterized in that: It comprises a urea mass and temperature sensor, a urea filter, a liquid level float, a circuit board, a urea liquid suction pipe joint, a vent pipe, a water inlet and an electromagnetic water valve; a urea mass and temperature sensor is arranged on one side of the urea filter, the other side of the urea filter is connected to the circuit board through a plurality of pipes, and a liquid level float is arranged on the pipes; the urea liquid suction pipe joint is arranged on one side of the circuit board, and one end of the electromagnetic water valve is connected to the water inlet.
2. A National VI urea sensor according to claim 1, characterized in that: One side of the electromagnetic water valve is connected to the first socket through a wire.
3. The National VI urea sensor according to claim 1, characterized in that: The urea quality and temperature sensor comprises a quality sensor and a temperature sensor.
4. The National VI urea sensor according to claim 1, characterized in that: A connection seat is arranged on one side of the circuit board, and card slots are evenly arranged on the outer wall of the connection seat. The connection seat is carded on the port of the urea tank through the card slots.
5. The National VI urea sensor according to claim 4, characterized in that: The urea tank port is opened on the side wall of the urea tank.
6. The National VI urea sensor according to claim 1, characterized in that: One side of the circuit board is connected to the second socket through a wire.
7. The National VI urea sensor according to claim 4, characterized in that: One-way valves are arranged at the connection points between the plurality of pipelines and the connection seat.