A gas removal test system, an expansion tank test system and a vehicle simulation cooling system

Abstract

The application relates to the technical field of vehicle cooling systems, and provides a degassing test system, an expansion tank test system and a whole-vehicle simulation cooling system. Quantitative bubbles can be added through a bubble generator, and the state and change of the bubbles can be observed through the first transparent pipeline and the second transparent pipeline. The water inflow and the water return flow can be tested through the first flow detection element and the second flow detection element. Therefore, the degassing rate can be tested and the qualitative evaluation of degassing can be carried out by controlling the quantity of added bubbles, observing the state and change of the bubbles at the upstream and downstream of the expansion tank and obtaining the relationship between the water inflow and the water return flow, so that the cooling system of the whole vehicle can be tested, and the development of the expansion tank is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of automotive cooling systems, and in particular to a degassing test system, an expansion chamber test system, and a whole vehicle simulation cooling system. Background Technology

[0002] Typically, commercial vehicles primarily employ an expansion tank circulation system to create a degassing system. The expansion tank facilitates gas-liquid separation, and the degassed coolant then flows back to the main system at the water pump inlet pipe via a return pipe, thus achieving the purpose of degassing the cooling system. In related technologies, to achieve high engine heat output and long service life, more components are incorporated into the vehicle. This results in an increasing number of components requiring cooling, leading to more complex piping layouts and arrangements in the cooling system. Consequently, filling and degassing the cooling system become more difficult, making it challenging to test the entire vehicle's cooling system. Summary of the Invention

[0003] Therefore, it is necessary to provide a degassing test system, an expansion chamber test system, and a vehicle simulation cooling system to facilitate the testing of the vehicle's cooling system.

[0004] According to one aspect of this application, an embodiment of this application provides a degassing test system for a vehicle's cooling system, the degassing test system comprising:

[0005] A first air intake testing device includes an air intake testing pipeline, a bubble generator, and a first flow detection element; the air intake testing pipeline includes a first water inlet pipeline, a first transparent pipeline, and a first water outlet pipeline connected sequentially along the water intake direction, the outlet of the first water outlet pipeline being connected to the air inlet of an expansion tank; the bubble generator is connected to the water inlet pipeline and is used to introduce air bubbles into the water inlet pipeline; the first flow detection element is disposed in the first water outlet pipeline and is used to detect the flow rate of the fluid flowing through the first water outlet pipeline; and

[0006] A degassing test device includes a degassing test pipeline and a second flow detection device; the degassing test pipeline includes a second inlet pipeline, a second transparent pipeline and a second outlet pipeline connected sequentially along the water outlet direction, the inlet of the second inlet pipeline is used to connect to the outlet of the expansion tank; the second flow detection device is disposed in the second outlet pipeline and is used to detect the flow rate of the fluid flowing through the second outlet pipeline;

[0007] The first transparent tube and the second transparent tube are used to observe the bubbles.

[0008] In one embodiment, the degassing test device further includes:

[0009] The first water collection pipe has one end connected to the second water inlet pipe and the other end connected to the second water outlet pipe;

[0010] The first water collection container is installed in the first water collection pipeline;

[0011] A first control element, disposed on the second water inlet pipe, is used to controllably open or close the second transparent pipe; and

[0012] The second control element is located on the first water collection pipeline and is used to controllably open or close the first water collection pipeline.

[0013] In one embodiment, the first water collection pipeline includes:

[0014] The first main water collection channel is equipped with the first water collection container.

[0015] The first connecting pipe has one end connected to the second water inlet pipe and the other end detachably connected to one end of the first main water collection pipe; and

[0016] The second connecting pipe has one end connected to the second outlet pipe and the other end detachably connected to the other end of the first main water collection pipe;

[0017] The second control element is provided between the first connecting pipe, the second connecting pipe, one end of the first main water collection pipe and one end of the first water collection container, and the other end of the first main water collection pipe and the other end of the first water collection container.

[0018] In one embodiment, the first water collection pipeline further includes a first quick-connect fitting;

[0019] The first connecting pipe and the second connecting pipe are detachably connected to the first main water collection line via the first quick-connect fitting.

[0020] In one embodiment, the degassing test device further includes a first pressure detection element and a second pressure detection element;

[0021] The first pressure detection element is installed on the second water inlet pipe and is used to detect the fluid pressure before the fluid enters the second transparent pipe.

[0022] The second pressure detection element is installed on the second water outlet pipe and is used to detect the fluid pressure after the fluid flows out of the second transparent pipe.

[0023] In one embodiment, the first control element is arranged both upstream and downstream of the second transparent conduit.

[0024] In one embodiment, the degassing test device further includes:

[0025] The second water collection pipeline, one end of which is connected to the second water outlet pipeline;

[0026] The second water collection container is used to collect fluid flowing out from the other end of the second water collection pipe; and

[0027] A third control element is provided on the second water collection pipeline for controllably opening or closing the second water collection pipeline.

[0028] In one embodiment, the second water collection pipeline includes:

[0029] The second main water collection channel, and the second water collection container, are used to collect fluid flowing out from one end of the second main water collection channel; and

[0030] The third connecting pipe has one end connected to the second outlet pipe and the other end detachably connected to the other end of the second main water collection pipe.

[0031] The third control element is located in the second main water collection line and / or the third connecting pipeline.

[0032] In one embodiment, the second water collection line further includes a second quick-connect fitting;

[0033] The third connecting pipe is detachably connected to the second main water collection line via the second quick-connect fitting.

[0034] In one embodiment, the degassing test device further includes two third pressure detection elements;

[0035] Both third pressure detection devices are installed on the second water outlet pipe, and are arranged upstream and downstream of the end of the second water collection pipe connected to the second water outlet pipe.

[0036] In one embodiment, the degassing test system further includes a second air intake test device;

[0037] The second air intake test device includes a third water inlet pipe, a third transparent pipe, and a third water outlet pipe connected sequentially along the water inlet direction;

[0038] The second air intake test device is arranged on the water inlet pipe of the target component in the cooling system, and the third transparent pipe is used to observe the bubbles.

[0039] According to another aspect of this application, embodiments of this application provide an expansion chamber testing system, including an expansion chamber and the degassing testing system in any of the above embodiments;

[0040] The air inlet of the expansion tank is connected to the outlet of the first water outlet pipe, and the water outlet of the expansion tank is connected to the inlet of the second water inlet pipe.

[0041] According to another aspect of this application, embodiments of this application provide a vehicle simulation cooling system, including the degassing test system described in any of the above embodiments.

[0042] In the aforementioned degassing test system, expansion tank test system, and vehicle simulation cooling system, the degassing test system includes at least a first intake test device and a degassing test device. The first intake test device includes at least an intake test pipeline, a bubble generator, and a first flow detection device. The degassing test device includes at least a degassing test pipeline and a second flow detection device. A fixed amount of bubbles can be added through the bubble generator, and the state and changes of the bubbles can be observed using the first and second transparent pipelines. The inlet and outlet water flow rates can be measured using the first and second flow detection devices. Therefore, by controlling the amount of bubbles added, observing the state and changes of bubbles upstream and downstream of the expansion tank, and obtaining the relationship between the inlet and outlet water flow rates, the degassing rate can be tested and a qualitative evaluation of degassing can be performed. This facilitates the testing of the vehicle's cooling system and also facilitates the development of the expansion tank.

[0043] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0044] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0045] Figure 1 This is a schematic diagram of the degassing test system in one embodiment of this application;

[0046] Figure 2 This is a schematic diagram of the structure of the first air intake test device in one embodiment of this application;

[0047] Figure 3 This is a schematic diagram of the degassing test device in one embodiment of this application;

[0048] Figure 4 This is a schematic diagram of the structure of the second air intake test device in one embodiment of this application;

[0049] Figure 5 This is a schematic diagram of the structure of a vehicle simulation cooling system in one embodiment of this application;

[0050] Figure 6 This is a schematic diagram of the expansion chamber testing system in one embodiment of this application.

[0051] The reference numerals in the detailed embodiments are as follows:

[0052] Degassing test system 1;

[0053] First air intake test device 100, first water inlet pipe 111, first transparent pipe 112, first water outlet pipe 113, bubble generator 120, first flow detection element 130;

[0054] The system includes a degassing test device 200, a second water inlet pipe 211, a second transparent pipe 212, a second water outlet pipe 213, a second flow detection element 220, a first main water collection line 231, a first connecting pipe 232, a second connecting pipe 233, a first quick-connect fitting 234, a first water collection container 240, a first control element f1, a second control element f2, a first pressure detection element p1, a second pressure detection element p2, a second main water collection line 251, a third connecting pipe 252, a second quick-connect fitting 253, a second water collection container 260, a third control element f3, a third pressure detection element p3, and a weighing device 270.

[0055] Second air intake test device 300, third water inlet pipe 310, third transparent pipe 320, third water outlet pipe 330;

[0056] 2. Expansion box, 3. Air-cooled radiator, 4. Fan, 5. Water pump, 6. Cylinder block, 7. Oil cooler, 8. Water distribution pipe, 9. EGR cooler, 10. Urea nozzle cooler, 11. Retarder cooler, 12. Cylinder head, 13. Engine outlet water pipe, 14. Thermostat, 15. Heater radiator, 16. Water tank, 17. Flow control valve. Detailed Implementation

[0057] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific implementation methods of the embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the embodiments of this application. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application. The embodiments of this application can be implemented in many ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the embodiments of this application are not limited to the specific embodiments disclosed below.

[0058] It is understood that the terms "first," "second," etc., used in this application may be used to describe various technical terms, but should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. However, unless otherwise stated, these technical terms are not limited to these terms. These terms are only used to distinguish one technical term from another. In the description of embodiments of this application, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0060] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than the horizontal height of the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0061] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0062] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application and in its specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0063] In a vehicle's engine cooling system, if air is trapped in the coolant, it accelerates cavitation in the water passages and, in turn, hinders heat transfer and coolant flow, leading to defects such as piston ring wear and cylinder head cracks. Especially at high temperatures, air expands faster than coolant, causing coolant to leak from the expansion tank cap or overflow pipe, resulting in insufficient coolant in the system. In extreme cases, air can cause water pump loss, piston seizure, and engine damage.

[0064] The air in the cooling system mainly comes from two sources: air generated by the water system or air intake into the system. Air generated within the system primarily comes from the engine cylinder head water jacket, coolant boiling at hot spots in the EGR (Engine Gas Recirculation) cooler, and air cavitation in the water pump. Air intake into the system is mainly caused by factors such as a damaged cylinder head gasket, leaks in the air compressor cylinder head gasket seal, leaks in the water pump water seal, and leaks in the water pipe joint seals, allowing air or exhaust gas to enter the cooling system.

[0065] Therefore, to remove air trapped in the cooling system, a degassing system is required. There are various types of degassing systems, but all require that 5-10% of the total coolant volume be bypassed to a relatively undisturbed area to separate the air from the coolant before the coolant is returned to the cooling system.

[0066] Typically, commercial vehicles primarily employ an expansion tank circulation system to form a degassing system. The expansion tank is installed at a relatively high position in the cooling system, allowing coolant carrying air to enter the upper part of the expansion tank through the degassing pipe. Due to the minimal turbulence within the expansion tank, air-water separation is achieved. The degassed coolant then flows back to the main system at the water pump inlet pipe through the return water pipe, thus achieving the purpose of degassing the cooling system.

[0067] In related technologies, to achieve high engine heat dissipation and long service life, more components are incorporated into the vehicle. This results in an increasing number of components requiring cooling, making the routing and layout of the cooling system more complex. Specifically, the cooling system may have many parallel branches or bypasses, such as urea nozzle cooling or supply module heating. For example, in heavy-duty commercial vehicles equipped with retarders, the retarder is typically connected in series before the engine and thermostat, located at the gearbox after the engine, and requires a large water flow. Therefore, filling and degassing the cooling system becomes difficult, making it challenging to test the entire vehicle's cooling system.

[0068] Based on this, in order to at least solve some of the above-mentioned problems, this application provides a degassing test system to facilitate testing the cooling system of a vehicle.

[0069] It should be noted that this degassing test system is used for the vehicle's cooling system, specifically a simulated cooling system. By applying the degassing test system to a simulated cooling system, quantitative tests on relevant indicators can be conducted, which in turn allows for qualitative testing of those indicators. Vehicles include, but are not limited to, hybrid new energy commercial vehicles.

[0070] Figure 1 A schematic diagram of the degassing test system 1 in one embodiment of this application is shown; Figure 2 This shows a schematic diagram of the structure of the first intake test device 100 in one embodiment of this application; Figure 3 A schematic diagram of the degassing test device 200 in one embodiment of this application is shown; for ease of explanation, Figure 1 The expansion tank 2 is shown in the diagram.

[0071] In some embodiments, please refer to Figure 1 This application provides a degassing test system 1, which includes a first air intake test device 100 and a degassing test device 200. The first air intake test device 100 is installed on the air intake pipe of the expansion tank 2 of the simulated cooling system and is used to test the air intake pipe of the expansion tank 2. The degassing test device 200 is installed on the water outlet pipe of the expansion tank 2 of the simulated cooling system and is used to test the water outlet pipe of the expansion tank 2. The air intake pipe of the expansion tank 2 is the pipe through which the coolant requiring degassing flows into the expansion tank 2, and the outlet of the air intake pipe of the expansion tank 2 is connected to the air inlet of the expansion tank 2. The water outlet pipe of the expansion tank 2 is the pipe through which the coolant, after degassing, flows out of the expansion tank 2, and the inlet of the water outlet pipe of the expansion tank 2 is connected to the water outlet of the expansion tank 2.

[0072] Please refer to Figure 2 and in conjunction with reference Figure 1 The first air intake testing device 100 includes an air intake testing pipeline, a bubble generator 120, and a first flow rate detection element 130. The air intake testing pipeline includes a first water inlet pipeline 111, a first transparent pipeline 112, and a first water outlet pipeline 113 connected sequentially along the water intake direction. The outlet of the first water outlet pipeline 113 is connected to the air inlet of the expansion tank 2. The first transparent pipeline 112 is used to observe bubbles. The bubble generator 120 is connected to the water inlet pipeline and is used to introduce bubbles into the water inlet pipeline. The first flow rate detection element 130 is located in the first water outlet pipeline 113 and is used to detect the flow rate of the fluid flowing through the first water outlet pipeline 113.

[0073] Please refer to Figure 3 and in conjunction with reference Figure 1The degassing test device 200 includes a degassing test pipeline and a second flow detection element 220. The degassing test pipeline includes a second inlet pipe 211, a second transparent pipe 212, and a second outlet pipe 213 connected sequentially along the water outlet direction. The inlet of the second inlet pipe 211 is used to connect to the outlet of the expansion tank 2. The second transparent pipe 212 is used to observe air bubbles. The second flow detection element 220 is located in the second outlet pipe 213 and is used to detect the flow rate of the fluid flowing through the second outlet pipe 213.

[0074] A fixed amount of air bubbles can be added through the bubble generator 120, and the state and changes of the bubbles can be observed using the first transparent pipe 112 and the second transparent pipe 212. The inlet and outlet water flow rates can be tested using the first flow rate sensor 130 and the second flow rate sensor 220. This allows for quantitative evaluation. Therefore, by controlling the amount of air bubbles added, observing the state and changes of the bubbles upstream and downstream of the expansion tank 2, and obtaining the relationship between the inlet and outlet water flow rates, the degassing rate can be tested, and a qualitative evaluation of degassing can be performed using quantitative evaluation. Based on the ability to perform a qualitative evaluation of degassing, when testing the actual cooling system, it is not necessary to set up the bubble generator 120, the first flow rate sensor 130, and the second flow rate sensor 220; evaluation can be performed using the first transparent pipe 112 and the second transparent pipe 212, thereby improving the difficulty of adding and circulating degassing in the cooling system and facilitating the testing of the entire vehicle's cooling system. Furthermore, during this process, the degassing test device 200 can measure the flow rate of each phase in the gas-liquid two-phase flow without separating the gas-liquid two-phase flow.

[0075] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1 The degassing test device 200 also includes a first water collection pipe, a first water collection container 240, a first control element f1, and a second control element f2. One end of the first water collection pipe is connected to the second water inlet pipe 211, and the other end is connected to the second water outlet pipe 213. The first water collection container 240 is disposed on the first water collection pipe. The first control element f1 is disposed on the second water inlet pipe 211 and is used to controllably open or close the second transparent pipe 212. The second control element f2 is disposed on the first water collection pipe and is used to controllably open or close the first water collection pipe. Optionally, the first water collection container 240 can be a water collection bottle.

[0076] In some specific embodiments, the degassing testing device 200 has a first operating mode and a second operating mode. Details are as follows:

[0077] (1) When the degassing test device 200 is in the first working mode, the first control element f1 can controllably open the second transparent pipe 212, and the second control element f2 can controllably close the first water collection pipe. At this time, the degassing device in the first working mode can be used in conjunction with the first air intake test device 100 for testing. In this way, the return water flowing out of the expansion tank 2 passes sequentially through the second water inlet pipe 211, the second transparent pipe 212, and the second water outlet pipe 213. By observing the state and changes of the bubbles in the second transparent pipe 212, and combining them with the state of the bubbles in the first transparent pipe 112, a quantitative evaluation of degassing can be performed, and a qualitative evaluation can be obtained. Optionally, when observing the bubbles in the first transparent pipe 112 and the second transparent pipe 212, strong light irradiation can be used.

[0078] (2) When the degassing test device 200 is in the second working mode, the first control element f1 can controllably shut off the second transparent pipe 212, and the second control element f2 can controllably open the second water collection pipe. At this time, the degassing device in the second working mode can be used for quantitative detection or calibration of bubbles. During measurement, after a short period of stable operation, the degassing test device 200 can be switched from the second working mode to the first working mode. The weight and volume of the coolant in the first water collection pipe and the first water collection container 240 can be sampled and measured. This measured value can be compared with the weight and volume of the coolant filling the first water collection pipe and the first water collection container 240 to obtain the volume and content of bubbles, thus realizing quantitative testing of bubbles and degassing. When conducting qualitative tests on bubble observation, the bubble content under different bubble states can be calibrated.

[0079] Therefore, by setting the first control element f1 and the second control element f2, the degassing test device 200 can switch between the first working mode and the second working mode, thereby enabling quantitative and qualitative evaluation of degassing.

[0080] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1The first water collection pipeline includes a first main water collection line 231, a first connecting line 232, and a second connecting line 233. A first water collection container 240 is provided on the first main water collection line 231. One end of the first connecting line 232 is connected to a second inlet water line 211, and the other end is detachably connected to one end of the first main water collection line 231. One end of the second connecting line 233 is connected to a second outlet water line 213, and the other end is detachably connected to the other end of the first main water collection line 231. Optionally, the first water collection pipeline also includes a first quick-connect fitting 234. The first connecting line 232 and the second connecting line 233 are detachably connected to the first main water collection line 231 via the first quick-connect fitting 234. Among them, a second control element f2 is provided between one end of the first connecting pipe 232, the second connecting pipe 233, one end of the first main water collection line 231 and one end of the first water collection container 240, and between the other end of the first main water collection line 231 and the other end of the first water collection container 240.

[0081] Thus, by detachably connecting the first connecting pipe 232 and the second connecting pipe 233 to the first main water collection line 231, and by providing a second control component f2 at each corresponding location, it is convenient to replace and install the first water collection line and to conduct quantitative tests on bubbles and degassing.

[0082] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1 The degassing test device 200 also includes a first pressure detection element p1 and a second pressure detection element p2. The first pressure detection element p1 is installed on the second water inlet pipe 211 and is used to detect the fluid pressure before the fluid enters the second transparent pipe 212. The second pressure detection element p2 is installed on the second water outlet pipe 213 and is used to detect the fluid pressure after the fluid flows out of the second transparent pipe 212. In this way, a qualitative evaluation of degassing can be performed by monitoring the state and changes of bubbles in the second transparent pipe 212 under different pressure conditions.

[0083] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1 Both upstream and downstream of the second transparent pipe 212 are equipped with first control elements f1. It is understood that when the degassing test device 200 is in the first operating mode, both first control elements f1 can controllably activate the second transparent pipe 212. This further improves the reliability of the degassing test device 200 when switching between the first and second operating modes.

[0084] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1The degassing test device 200 also includes a second water collection pipe, a second water collection container 260, and a third control element f3. One end of the second water collection pipe is connected to the second water outlet pipe 213. The second water collection container 260 is used to collect fluid flowing out from the other end of the second water collection pipe. The third control element f3 is located on the second water collection pipe and is used to controllably open or close the second water collection pipe. Optionally, the second water collection container 260 can be a water collection tank.

[0085] Therefore, in conjunction with the content illustrated in the aforementioned embodiments, the degassing test device 200 also has a third operating mode. In the third operating mode, the degassing test device 200 controls the coolant in the expansion tank 2 to the lower liquid level. After the set operating conditions stabilize, the first control element f1 and the third control element f3 are activated, the second control element f2 is deactivated, and the return water is discharged into the second water collection container 260. The amount of water discharged into the second water collection container 260 is monitored by the weighing device 270, and simultaneously, the changes in air bubbles in the second transparent pipe 212 are monitored. When the number and size of air bubbles in the second transparent pipe 212 increase significantly, the amount of water discharged into the second water collection container 260 at this time is recorded, which is the allowable water loss of the expansion tank 2 under this operating condition.

[0086] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1 The second water collection pipeline includes a second main water collection line 251 and a third connecting line 252. A second water collection container 260 is used to collect fluid flowing from one end of the second main water collection line 251. One end of the third connecting line 252 is connected to the second outlet water line 213, and the other end is detachably connected to the other end of the second main water collection line 251. Optionally, the second water collection pipeline also includes a second quick-connect fitting 253, and the third connecting line 252 is detachably connected to the second main water collection line 251 via the second quick-connect fitting 253. A third control element f3 is provided in the second main water collection line 251 and / or the third connecting line 252. Thus, by detachably connecting the second main water collection line 251 to the third connecting line 252 and providing the third control element f3 at the corresponding location, it is convenient to replace and install the second water collection pipeline and to conduct water loss tests on the expansion tank 2.

[0087] It should be noted that the first control element f1, the second control element f2, and the third control element f3 shown in some of the above embodiments can be configured as electrically controlled shut-off valves.

[0088] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1The degassing test device 200 also includes two third pressure detection elements p3. Both third pressure detection elements p3 are installed on the second outlet pipe 213, and are arranged upstream and downstream of the end of the second collection pipe connected to the second outlet pipe 213. Thus, when testing the water loss of the expansion tank 2, the influence of different pressure conditions on the water loss can be monitored by tracking the pressure upstream and downstream of the end of the second collection pipe connected to the second outlet pipe 213, allowing for a qualitative evaluation of the water loss.

[0089] In some embodiments, please continue to refer to Figure 3 and in conjunction with reference Figure 1 The third pressure detection element p3, which is located upstream of one end of the second water collection pipe connected to the second water outlet pipe 213, is also the second pressure detection element p2 shown in some of the aforementioned embodiments.

[0090] Figure 4 A schematic diagram of the structure of the second air intake test device 300 in one embodiment of this application is shown; for ease of explanation, only the content related to the embodiment of this application is shown.

[0091] In some embodiments, please refer to Figure 4 The degassing test system 1 also includes a second air intake test device 300. The second air intake test device 300 includes a third water inlet pipe 310, a third transparent pipe 320, and a third water outlet pipe 330 connected sequentially along the water inlet direction. The second air intake test device 300 is arranged on the water inlet pipe of the target component in the cooling system, and the third transparent pipe 320 is used to observe air bubbles.

[0092] Thus, the effect of different bubble contents in the degassing test system 1 on the flow and bubble content at the inlet of the target component can be observed through the third transparent pipe 320.

[0093] It should be noted that the aforementioned target components can be components such as water pump 5, air-cooled radiator 3, retarder cooler 11, and EGR cooler 9 in the simulated cooling system. The target components can be set according to the specific components in the simulated cooling system and the target components that need to be observed. This application embodiment does not impose specific limitations on this.

[0094] Based on the same inventive concept, this application also provides a vehicle simulation cooling system, which includes the degassing test system 1 in any of the above embodiments. It should be noted that since this vehicle simulation cooling system includes the degassing test system 1 in any of the above embodiments, the advantages of the degassing test system 1 illustrated in some of the above embodiments are also present in this vehicle simulation cooling system, and will not be repeated here.

[0095] The following description, using a commercial vehicle with a retarder as an example, illustrates the simulated cooling system of the entire vehicle, with reference to the accompanying drawings.

[0096] Figure 5 A schematic diagram of a vehicle simulation cooling system in one embodiment of this application is shown; for ease of explanation, only the content related to the embodiment of this application is shown.

[0097] In some embodiments, please refer to Figure 5 The simulated vehicle cooling system also includes an expansion tank 2, an air-cooled radiator 3, a fan 4, a water pump 5, a cylinder block 6, an oil cooler 7, a water distribution pipe 8, an EGR cooler 9, a urea injector cooler 10, a retarder cooler 11, a cylinder head 12, an engine coolant outlet pipe 13, a thermostat 14, and a heater radiator 15. It is understood that the components included in the aforementioned simulated vehicle cooling system are all components that simulate the actual cooling system of a vehicle.

[0098] The water pump 5 has its outlet connected to the inlet of the oil cooler 7. The oil cooler 7 has a water distribution pipe 8 at its outlet. One outlet of the water distribution pipe 8 connects to the inlet of the cylinder block 6, another outlet connects to the inlet of the EGR cooler 9, and yet another outlet connects to the inlet of the urea injector cooler 10. The cylinder block 6 has a cylinder head 12, and the cylinder head 12 has an engine water outlet pipe 13. One outlet of the engine water outlet pipe 13 connects to the inlet of the heater radiator 15, and the other outlet connects to the retarder cooler 11. The outlets of the retarder cooler 11, the EGR cooler 9, and the urea injector cooler 10 are each connected to one inlet of the thermostat 14. One outlet of the thermostat 14 connects to one inlet of the water pump 5, and within the pipe connecting one outlet of the thermostat 14 to one inlet of the water pump 5, it is connected to the outlet of the heater radiator 15. The other outlet of the thermostat 14 connects to one inlet of the air-cooled radiator 3, and one outlet of the air-cooled radiator 3 connects to the other inlet of the water pump 5. Fan 4 is used to provide air cooling for the air-cooled heatsink 3.

[0099] One of the two air inlet pipes of the expansion tank 2 is connected to one inlet of the thermostat 14, and the other air inlet pipe is connected to the other outlet of the air-cooled radiator 3. Both air inlet pipes are equipped with the first air inlet test device 100 of the degassing test system 1. The water outlet pipe of the expansion tank 2 is connected to the pipe connecting the air-cooled radiator 3 and the water pump 5. The water outlet pipe of the expansion tank 2 is equipped with the degassing test device 200 of the degassing test system 1.

[0100] Optionally, such as Figure 5 As shown, according to testing requirements, a second air intake test device 300 can be installed on the pipe connecting the air-cooled radiator 3 and the water pump 5. Similarly, a second air intake test device 300 can also be installed on the water inlet pipes of the retarder cooler 11 and the EGR cooler 9. This facilitates the monitoring of cooling components prone to bubble formation.

[0101] In the above arrangement, since the EGR cooler 9 is connected to an air intake pipe of the expansion tank 2, and the air intake pipe is equipped with a first air intake test device 100, the vaporization observation or bubble quantity test inside the EGR cooler 9 can be performed to test the vaporization phenomenon inside the EGR cooler 9.

[0102] In the above arrangement, the engine runs at high speed and then directly to idle speed, which can simulate the rapid deceleration and water backflow of the whole vehicle. By observing the changes in flow and pressure at various points in the system, the changes in liquid level in expansion tank 2, and the water backflow situation, the anti-water backflow capability of the system and expansion tank 2 can be evaluated.

[0103] Thus, the components within the aforementioned vehicle-simulated cooling system can be arranged according to actual vehicle cooling system requirements. It is understood that the above-described arrangement of the vehicle-simulated cooling system is merely illustrative, and the actual vehicle-simulated cooling system includes, but is not limited to, the above arrangement. The aforementioned degassing system for the simulated vehicle cooling system's water circuit, through combination and control, can simulate various water flow rates, pressures, and water resistance parameters of a vehicle, and can also test parameters such as vehicle filling rate, initial filling volume, degassing time, degassing rate, and water loss. It can quantitatively test the degassing effect under various operating conditions and evaluate the system and expansion tank 2's resistance to backflow. Simultaneously, it allows for comparison of the degassing capabilities of different expansion tanks 2, facilitating the design, development, and selection of the expansion tank 2.

[0104] Figure 6 A schematic diagram of the expansion chamber testing system in one embodiment of this application is shown; for ease of explanation, only the content related to the embodiment of this application is shown.

[0105] Based on the same inventive concept, please refer to Figure 6 This application also provides an expansion chamber testing system, which includes an expansion chamber 2 and the degassing testing system 1 as described in any of the above embodiments. The air inlet of the expansion chamber 2 is connected to the outlet of the first water outlet pipe 113, and the water outlet of the expansion chamber 2 is connected to the inlet of the second water inlet pipe 211. It should be noted that since this expansion chamber testing system includes the degassing testing system as described in any of the above embodiments, it also possesses the advantages of the degassing testing systems illustrated in some of the above embodiments, and will not be repeated here.

[0106] In some embodiments, please continue to refer to Figure 6The expansion chamber testing system also includes an air-cooled radiator 3, a fan 4, a water tank 16, and a water pump 5. The fan 4 is used to cool the air-cooled radiator 3. The expansion chamber 2 has two air inlets, and the first air inlet testing device 100 has two inlets. One first water inlet pipe 111 connects the expansion chamber 2 and the air-cooled radiator 3, and the other first water inlet pipe 111 connects the water tank 16 and the expansion chamber 2. The other outlet of the air-cooled radiator 3 and the outlet of the second water outlet pipe 213 are both connected to the inlet of the water pump 5, and the outlet of the water pump 5 is connected to the water tank 16. The water tank 16 is also connected to the air-cooled radiator 3 via a pipe, and a flow regulating valve 17 is installed on this pipe.

[0107] Thus, by using the test methods illustrated in some of the above embodiments, a comparative test of the degassing function of the expansion chamber 2 can be conducted to compare the degassing effects of different expansion chambers 2 under the same working conditions, which facilitates the development of the expansion chamber 2.

[0108] In summary, this embodiment allows for the addition of a fixed amount of air bubbles via the bubble generator 120, and the state and changes of these bubbles can be observed using the first transparent pipe 112 and the second transparent pipe 212. The inlet and outlet water flow rates can be tested using the first flow rate sensor 130 and the second flow rate sensor 220. Therefore, by controlling the amount of air bubbles added, observing the state and changes of the bubbles upstream and downstream of the expansion tank 2, and obtaining the relationship between the inlet and outlet water flow rates, the degassing rate can be tested and a qualitative evaluation of the degassing process can be performed. This facilitates testing of the vehicle's cooling system and the development of the expansion tank 2. Furthermore, based on the aforementioned quantitative and qualitative test results, the first intake air testing device 100 and the degassing testing device 200 can be combined and installed in an actual vehicle for practical testing. In this case, only qualitative indicators need to be tested for the actual vehicle, making the process simpler. During this process, the degassing testing device 200 can measure the flow rate of each phase in the gas-liquid two-phase flow without separating the gas-liquid two-phase flow. By setting up a more flexible second intake test device 300, it is convenient to test components that require bubble testing (such as water pump 5, EGR cooler 9, retarder cooler 11, etc.). During the above process, components within the corresponding system can be added or removed according to the vehicle model and testing needs, simulating the actual conditions of different vehicles or requirements for testing. In addition, it includes, but is not limited to, the expansion chamber test system that can be constructed using the degassing test system 1, and can also be independently combined into engine subsystems, external accessory subsystems, etc., according to test requirements, allowing for flexible integration of different tests.

[0109] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A deaeration test system for a cooling system of a vehicle, characterized by, The degassing test system comprises: The first air inlet test device comprises an air inlet test pipeline, a bubble generator and a first flow detection member; the air inlet test pipeline comprises a first water inlet pipeline, a first transparent pipeline and a first water outlet pipeline connected in sequence along the water inlet direction; the outlet of the first water outlet pipeline is connected to the air inlet of the expansion tank; the bubble generator is connected to the first water inlet pipeline at a position upstream of the first water inlet pipeline and close to the first transparent pipeline, for adding a certain amount of bubbles into the first water inlet pipeline; the first flow detection member is arranged at the inlet end of the first water outlet pipeline, for detecting the water inlet flow rate through the first water outlet pipeline; and The degassing test device comprises: The degassing test pipeline comprises a second water inlet pipeline, a second transparent pipeline and a second water outlet pipeline connected in sequence along the water outlet direction; the inlet of the second water inlet pipeline is connected to the water outlet of the expansion tank; The second flow detection member is arranged at the outlet end of the second water outlet pipeline, for detecting the backwater flow rate through the second water outlet pipeline; The first water collection pipeline has one end connected to the second water inlet pipeline and the other end connected to the second water outlet pipeline; The first water collection container is arranged in the first water collection pipeline; The first control member is arranged on the second water inlet pipeline, for controllably opening or closing the second transparent pipeline; The second control member is arranged on the first water collection pipeline, for controllably opening or closing the first water collection pipeline; The second water collection pipeline has one end connected to the second water outlet pipeline; The second water collection container is used to collect the fluid flowing out of the other end of the second water collection pipeline; and The third control member is arranged on the second water collection pipeline, for controllably opening or closing the second water collection pipeline; The first transparent pipeline and the second transparent pipeline are used for observing bubbles; the degassing test system is configured to test the degassing rate of the expansion tank by controlling the amount of bubbles added by the bubble generator, observing the state and changes of bubbles upstream and downstream of the expansion tank through the first transparent pipeline and the second transparent pipeline, and obtaining the relationship between the water inlet flow rate and the backwater flow rate by the first flow detection member and the second flow detection member, and performing qualitative evaluation of degassing by quantitative evaluation; The degassing test device has a working mode for testing the water loss of the expansion tank; when the degassing test device is in the working mode for testing the water loss of the expansion tank, the cooling liquid in the expansion tank is controlled at the liquid level, after the set working condition is stable, the first control member and the third control member are opened, and the second control member is closed, the backwater is discharged into the second water collection container; the water discharge amount discharged into the second water collection container is monitored by the weighing device, and the bubble changes in the second transparent pipeline are monitored at the same time; when the bubbles in the second transparent pipeline obviously increase and become larger, the water discharge amount discharged into the second water collection container at this time is recorded as the allowable water loss amount of the expansion tank under the working condition. The degassing test device further comprises two third pressure detection members; both of the two third pressure detection members are arranged on the second water outlet pipeline and are arranged upstream and downstream of one end of the second water collecting pipeline connected to the second water outlet pipeline; during the water loss test of the expansion tank, the influence of different pressure states on the water loss is monitored by monitoring the pressure upstream and downstream of one end of the second water collecting pipeline connected to the second water outlet pipeline, and the qualitative evaluation of the water loss is performed.

2. The outgassing test system of claim 1, wherein, The first water collecting pipeline comprises: a first water collecting main pipeline, wherein the first water collecting container is arranged on the first water collecting main pipeline; a first connecting pipeline, one end of which is connected to the second water inlet pipeline, and the other end of which is detachably connected to one end of the first water collecting main pipeline; and a second connecting pipeline, one end of which is connected to the second water outlet pipeline, and the other end of which is detachably connected to the other end of the first water collecting main pipeline; wherein the second control member is arranged between the first connecting pipeline, the second connecting pipeline, one end of the first water collecting main pipeline and one end of the first water collecting container, and between the other end of the first water collecting main pipeline and the other end of the first water collecting container.

3. The outgassing test system of claim 2, wherein, The first water collecting pipeline further comprises a first quick plug connector; The first connecting pipeline and the second connecting pipeline are detachably connected to the first water collecting main pipeline by means of the first quick plug connector.

4. The outgassing test system of claim 1, wherein, The degassing test device further comprises a first pressure detection member and a second pressure detection member; The first pressure detection member is arranged on the second water inlet pipeline and is used for detecting the fluid pressure before the fluid enters the second transparent pipeline; The second pressure detection member is arranged on the second water outlet pipeline and is used for detecting the fluid pressure after the fluid flows out of the second transparent pipeline.

5. The outgassing test system of claim 1, wherein, The first control member is arranged upstream and downstream of the second transparent pipeline.

6. The outgassing test system of claim 1, wherein, The second water collecting pipeline comprises: a second water collecting main pipeline, wherein the second water collecting container is used for collecting the fluid flowing out of one end of the second water collecting main pipeline; and a third connecting pipeline, one end of which is connected to the second water outlet pipeline, and the other end of which is detachably connected to the other end of the second water collecting main pipeline; wherein the third control member is arranged on the second water collecting main pipeline and / or the third connecting pipeline.

7. The outgassing test system of claim 6, wherein, The second water collecting pipeline further comprises a second quick plug connector; The third connecting pipeline is detachably connected to the second water collecting main pipeline by means of the second quick plug connector.

8. The outgassing test system of any of claims 1-7, wherein, The degassing test system further comprises a second air inlet test device; The second air inlet test device comprises a third water inlet pipeline, a third transparent pipeline and a third water outlet pipeline connected in sequence in the water inlet direction; wherein the second air inlet test device is arranged on the water inlet pipeline of the target member in the cooling system, and the third transparent pipeline is used for observing air bubbles.

9. An expansion tank testing system characterized by, The degassing test system comprises an expansion tank and any one of the degassing test systems according to claims 1-8; The air inlet of the expansion tank is communicated with the outlet of the first water outlet pipeline, and the water outlet of the expansion tank is communicated with the inlet of the second water inlet pipeline.

10. A complete vehicle simulation cooling system, characterized by, The degassing test system comprises any one of the degassing test systems according to claims 1-8.

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