A post-processing reagent storage device

Abstract

The utility model discloses a post -treatment reagent storage device relates to the field of automobile manufacturing. This post -treatment reagent storage device, including the storage body, the inner bottom of storage body is provided with heating assembly, and the sensor module is installed on storage body, and the sensor module includes a plurality of sensors, and a plurality of sensors detect the solution inside the storage body, the outside of storage body is installed with monitoring interface, and the monitoring interface is electrically connected with a plurality of sensors, is used for outputting the detection signal of each sensor. This post -treatment reagent storage device, heating assembly cooperation heat preservation layer can enhance the heating thawing capacity under the low -temperature environment, reduce the heat loss, improve the adaptive capacity of device in the cold region, reduce the dependence on high -cost low freezing point urea.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, specifically to a post-processing reaction agent storage device. Background Technology

[0002] A 32.5% aqueous solution of automotive urea, used as a reducing agent for diesel vehicles meeting China VI emission standards, has a freezing point of -11°C. In cold regions, it is prone to freezing, leading to excessive vehicle emissions. While urea products with even lower freezing points exist, their cost is 2-3 times that of conventional products, and they may shorten the lifespan of the reactant storage system.

[0003] Therefore, OEMs typically employ heated reagent storage devices to address low-temperature issues. However, existing devices are limited by cost and vehicle layout constraints, resulting in limited heating and defrosting capabilities. They can only meet the engine bench test requirements stipulated by regulations and cannot adapt to complex real-world driving conditions. Furthermore, existing devices have limited sensor monitoring capabilities and lack efficient communication interfaces with the vehicle control system. This leads to insufficient indicators for OEMs to verify operating conditions and determine defrosting status, exacerbating the risk of frequent false alarms from vehicle warning lights. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a post-treatment reactant storage device. Existing post-treatment reactant storage devices have limited heating and thawing capabilities in low-temperature environments, incomplete sensor monitoring, and insufficient communication with the vehicle control system, resulting in their inability to adapt to complex actual working conditions and a tendency to generate false alarms.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a post-processing reaction agent storage device, including a storage body, a heating component is provided at the bottom of the storage body, and a sensor module is installed on the storage body, and the sensor module includes multiple sensors, which detect the solution inside the storage body. A monitoring interface is installed on the outside of the storage body. The monitoring interface is electrically connected to multiple sensors and is used to output the detection signals of each sensor.

[0006] Preferably, the sensor module includes a temperature sensor, a liquid level sensor, and a quality sensor.

[0007] Preferably, the storage body is further provided with a liquid suction port, and the quality sensor is installed on the inner side wall of the liquid suction port.

[0008] Preferably, the liquid level sensor is L-shaped, with its bottom end extending into the interior of the storage body.

[0009] Preferably, it also includes a thermal insulation layer, which is embedded inside the storage body to reduce heat loss in low-temperature environments.

[0010] Preferably, the monitoring interface can communicate with the vehicle control system to transmit sensor detection signals to the vehicle control system for status determination.

[0011] Its beneficial effects are as follows: 1. The post-processing reagent storage device, with its heating components and insulation layer, can enhance the heating and thawing capabilities in low-temperature environments, reduce heat loss, improve the device's adaptability in cold regions, and reduce dependence on high-cost, low-freezing-point urea. Temperature sensors, liquid level sensors, and quality sensors located at the liquid inlet form a multi-dimensional monitoring system that can comprehensively capture the temperature, liquid level, and quality status of urea, avoiding misjudgments due to single monitoring.

[0012] 2. The aftertreatment reactant storage device has a monitoring interface that communicates with the vehicle control system. It can reliably transmit signals from the temperature sensor, liquid level sensor, and quality sensor to the vehicle system in real time, enabling the system to more accurately determine the thawing completion status and injection conditions, reduce the risk of false alarms, and improve the user's driving experience. The L-shaped liquid level sensor extends into the storage body at its bottom, which can more accurately monitor the urea status at different liquid levels, further improving monitoring reliability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Storage unit; 2. Heating component; 3. Monitoring interface; 4. Liquid suction port; 5. Insulation layer; 6. Temperature sensor; 7. Liquid level sensor; 8. Quality sensor. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0018] This utility model discloses a post-processing reactant storage device, according to the appendix. Figure 1 As shown, it includes a storage body 1, a heating component 2 is provided at the bottom of the storage body 1, and a sensor module is installed on the storage body 1. The sensor module includes multiple sensors, which detect the solution inside the storage body 1. A monitoring interface 3 is installed on the outside of the storage body 1. The monitoring interface 3 is electrically connected to multiple sensors and is used to output the detection signals of each sensor.

[0019] Heating component 2 employs either resistance heating or electromagnetic heating. Resistance heating involves winding a resistance wire, such as a nickel-chromium alloy wire, around a suitable location on the inner bottom or inner wall of the storage body 1, or using a built-in electric heating rod. When current passes through the resistance wire or heating rod, electrical energy is converted into heat energy, generating heat. This heat is transferred from the heating element to the urea aqueous solution within the storage body 1 via thermal conduction, thus heating and thawing it. For example, this simple and direct resistance heating method is commonly used in some small-scale post-processing reagent storage devices; it is low-cost and easy to control.

[0020] Electromagnetic heating utilizes the principle of electromagnetic induction, with an electromagnetic heating coil installed on the outside of the storage unit 1. When the electromagnetic heating coil is energized, it generates an alternating magnetic field. This magnetic field penetrates the metal material of the storage unit 1, inducing eddy currents within the metal. Due to the inherent resistance of the metal, the eddy currents flowing within the metal generate heat, which is then transferred to the urea aqueous solution inside the storage unit 1. This heating method offers rapid heating, high thermal efficiency, effectively reduces heating time, and provides relatively uniform heating, making it suitable for large storage devices or scenarios requiring rapid heating.

[0021] According to the appendix Figure 1 As shown, the sensor module further includes a temperature sensor 6, a liquid level sensor 7, and a quality sensor 8.

[0022] According to the appendix Figure 1 As shown, the storage body 1 is further provided with a liquid suction port 4, and the quality sensor 8 is installed on the inner wall of the liquid suction port 4.

[0023] According to the appendix Figure 1 As shown, the liquid level sensor 7 is further configured as an L-shape, with the bottom end of the liquid level sensor 7 extending into the interior of the storage body 1.

[0024] According to the appendix Figure 1 As shown, it further includes a thermal insulation layer 5, which is embedded inside the storage body 1 to reduce heat loss in low-temperature environments.

[0025] According to the appendix Figure 1 As shown, furthermore, monitoring interface 3 can communicate with the vehicle control system to transmit sensor detection signals to the vehicle control system for status determination.

[0026] Working principle: Storage unit 1 is used to store urea aqueous solution conforming to GB29518-2013. Insulation layer 5 is embedded inside storage unit 1 to reduce heat loss in low-temperature environments. When in a low-temperature environment, heating component 2 activates to thaw the urea inside storage unit 1. During this process, temperature sensor 6 monitors the urea temperature in real time, L-shaped liquid level sensor 7 monitors the urea level, and quality sensor 8 on the inner wall of suction port 4 monitors the urea quality. The detection signals from each sensor are transmitted to the vehicle control system via monitoring interface 3. The vehicle control system determines the status based on the signals: if the temperature, liquid level, and quality all meet preset conditions, the system is allowed to build pressure and spray urea from suction port 4; if not, the status is fed back through monitoring interface 3 to ensure reliable operation of the device at low temperatures and reduce false alarms.

[0027] Overall workflow: The specific steps are as follows: Experimental preparation stage: Select one functional test vehicle and add a 32.5% urea aqueous solution conforming to GB29518-2013 standard to storage unit 1 until the liquid level reaches 100%.

[0028] Experimental verification phase: The test vehicle was placed in a cool, shady place in a high-altitude and cold region and left to freeze for 72 hours to ensure that the urea in storage unit 1 was completely frozen. After freezing, the vehicle was road tested according to the cycle of "idle (20 min) → urban area (15 min) → suburbs (15 min) → highway (20 min)". During the test, the heating components were activated to heat and thaw the frozen urea.

[0029] Record the time when each sensor outputs a reliable signal: T1: The time it takes for temperature sensor 6 to output a reliable signal (such as when the urea temperature stabilizes above freezing); T2: The time it takes for the level sensor 7 to output a reliable signal (such as stable level monitoring data); T3: The time it takes for the quality sensor 8 to output a reliable signal (such as when the urea concentration meets the standard).

[0030] Calculate T = Max(T1, T2, T3): If T≥70min: The vehicle and equipment installation need to be re-inspected. If there is no problem with the equipment, the storage device hardware needs to be optimized (such as increasing the power of the heating components), and the freezing and testing should be carried out again.

[0031] If T < 70 min: Proceed to the next step of spray verification.

[0032] Injection reliability verification: Start the system to build up pressure and inject urea. Observe the urea status at the four suction ports using an endoscope. The following conditions must be met simultaneously: Continuous urea injection for 1 hour according to the vehicle model's maximum urea injection requirements; Liquid urea was continuously drawn out near the suction port 4.

[0033] If the above conditions are not met: refreeze the vehicle under the same freezing conditions, extend the system pressure build-up time by 5 minutes (compared to the previous time), and repeat the injection verification until the conditions are met and T < 70 minutes, then the experiment is considered successful.

[0034] Through the above process, the defrosting capability of the heating component 2 in a low-temperature environment, the monitoring reliability of the sensor module, and the operational stability of the storage device under complex working conditions can be verified, ultimately achieving a comprehensive verification of the low-temperature reliability of the post-processing reactant storage device.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A post-processing reactant storage device, comprising a storage body (1), characterized in that, A heating component (2) is provided at the bottom of the storage body (1), and a sensor module is installed on the storage body (1). The sensor module includes multiple sensors, which detect the solution inside the storage body (1). The storage body (1) is equipped with a monitoring interface (3) on its outer side. The monitoring interface (3) is electrically connected to multiple sensors and is used to output the detection signals of each sensor.

2. The post-processing reactant storage device according to claim 1, characterized in that, The sensor module includes a temperature sensor (6), a liquid level sensor (7), and a quality sensor (8).

3. The post-processing reactant storage device according to claim 2, characterized in that, The storage body (1) is also provided with a liquid suction port (4), and the quality sensor (8) is installed on the inner wall of the liquid suction port (4).

4. The post-processing reactant storage device according to claim 2, characterized in that, The liquid level sensor (7) is configured as an L-shape, with the bottom end of the liquid level sensor (7) extending into the interior of the storage body (1).

5. The post-processing reactant storage device according to claim 1, characterized in that, It also includes a thermal insulation layer (5), which is embedded inside the storage body (1) to reduce heat loss in low-temperature environments.

6. The post-processing reactant storage device according to claim 1, characterized in that, The monitoring interface (3) can communicate with the vehicle control system and transmit the sensor detection signal to the vehicle control system to realize the status determination.

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