Engine cylinder head water jacket inner cavity cleanliness detection system

Abstract

This utility model relates to the field of engine technology and discloses an engine cylinder head water jacket internal cavity cleanliness testing system, which can improve the cleanliness testing effect of engine cylinder head water jackets. The engine cylinder head water jacket internal cavity cleanliness testing system includes a test bench and a cylinder head adapter, a drive unit, and a water tank mounted on the test bench. A water pump is located on one side of the cylinder head adapter, and a water channel is provided inside the cylinder head adapter. One end of the water channel is connected to the water pump, and the other end of the water channel has a connection port for connecting to the cylinder head placed on top of the cylinder head adapter. The drive unit is connected to the water pump to drive its operation. The water tank is used to hold antifreeze and has an inlet, an outlet, and a first drain valve. The inlet is connected to the cylinder head, the outlet is connected to the water pump, and the first drain valve is located at the bottom of the water tank.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to an engine cylinder head water jacket inner cavity cleanliness detection system. Background Technology

[0002] The cleanliness of the engine cylinder head water jacket directly affects the reliability of the cooling system. If impurities remain inside the cylinder head water jacket, it may lead to blockage, localized overheating, or even engine failure. Currently, the cleanliness of engine cylinder head water jackets is mostly tested using offline rinsing or manual visual inspection. These methods suffer from low efficiency, poor repeatability, and inability to simulate actual operating conditions, resulting in unsatisfactory results in the cleanliness testing of engine cylinder head water jackets. Utility Model Content

[0003] This invention provides a system for detecting the cleanliness of the inner cavity of the engine cylinder head water jacket, which can improve the detection effect of the cleanliness of the engine cylinder head water jacket.

[0004] This utility model provides a system for detecting the cleanliness of the inner cavity of the engine cylinder head water jacket, including:

[0005] Test bench;

[0006] A cylinder head adapter is provided on the test bench. A water pump is provided on one side of the cylinder head adapter. A water channel is provided inside the cylinder head adapter. One end of the water channel is connected to the water pump. The other end of the water channel is provided with a connection port for connecting to the cylinder head placed on top of the cylinder head adapter.

[0007] A drive unit is installed on the test bench and is connected to the water pump to drive the water pump to run.

[0008] A water tank is provided on the test bench. The water tank is used to contain antifreeze. The water tank is provided with an inlet, an outlet and a first drain valve. The inlet is used to communicate with the cylinder head and the outlet is used to communicate with the water pump. The first drain valve is located at the bottom of the water tank.

[0009] This utility model provides an engine cylinder head water jacket inner cavity cleanliness detection system. It utilizes a cylinder head adapter assembled with the cylinder head, allowing antifreeze from the water tank to flow through a water pump into the water passages within the cylinder head adapter, then into the cylinder head water jacket, and finally back into the water tank. As the antifreeze flows through the water jacket, it carries impurities back into the water tank, where they settle at the bottom. After the drive unit stops, the antifreeze is allowed to stand for a period of time. The first drain valve is then used to drain the antifreeze and impurities from the bottom of the water tank before cleanliness calculations are performed. This detection system, using the cylinder head adapter, water pump, and water tank in conjunction, detects the cleanliness of the cylinder head water jacket inner cavity. During the antifreeze circulation process, impurities in the cylinder head water jacket are carried out, improving the accuracy of the test results and reducing costs.

[0010] In some possible implementations, a heating device is also included for heating the antifreeze in the water tank.

[0011] In some possible implementations, the bottom of the water tank has a funnel-shaped structure, and the first drain valve is located at the lowest point of the water tank.

[0012] In some possible implementations, the water tank is further provided with a second drain valve, which is located on the side of the water tank.

[0013] In some possible implementations, a filter is also included, which is disposed between the first drain valve and the water pump.

[0014] In some possible implementations, the first drain valve is a flow valve.

[0015] In some possible implementations, the cylinder head adapter is an engine block.

[0016] In some possible implementations, the cylinder head adapter further includes a pulley system comprising a first pulley and a second pulley connected by a belt, the first pulley being connected to the drive unit and the second pulley being connected to the water pump.

[0017] In some possible implementations, the drive device is a motor, and the output shaft of the motor is connected to the first pulley.

[0018] In some possible implementations, a support member is also included, one end of which is fixed to the test bench and the other end of which is detachably connected to the cylinder head adapter. Attached Figure Description

[0019] Figure 1This is a schematic diagram of a system for detecting the cleanliness of the engine cylinder head water jacket cavity in an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of a water tank in one embodiment of the present utility model;

[0021] Figure 3 This is another structural schematic diagram of the engine cylinder head water jacket inner cavity cleanliness detection system in this utility model embodiment;

[0022] Figure 4 This is another structural schematic diagram of the engine cylinder head water jacket inner cavity cleanliness detection system in this utility model embodiment;

[0023] Figure 5 This is a schematic diagram of one embodiment of the gear train structure on the cylinder head adapter in this utility model.

[0024] Figure 6 This is another structural schematic diagram of the engine cylinder head water jacket inner cavity cleanliness detection system in this utility model embodiment.

[0025] In the picture:

[0026] 1-Cylinder head; 10-Test bench; 20-Cylinder head adapter; 21-Pulley system; 211-Crankshaft pulley; 212-Water pump pulley; 213-Belt; 22-Water pump; 23-Flywheel housing; 30-Water tank; 31-First drain valve; 32-Second drain valve; 40-Drive unit; 50-Sealed cover; 60-Support component; 70-Filter. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] refer to Figure 1 The engine cylinder head water jacket cleanliness testing system in this embodiment may include a test bench 10, a cylinder head adapter 20, a water tank 30, and a drive device 40. The cylinder head adapter 20, the drive device 40, and the water tank 30 are all mounted on the test bench 10 to provide a stable testing environment for the cylinder head 1 water jacket cleanliness testing.

[0029] A water pump 22 is provided on one side of the cylinder head adapter 20. A water channel is provided inside the cylinder head adapter 20. One end of the water channel is connected to the water pump, and the other end of the water channel is provided with a connection port, which can be used to connect to the cylinder head 1 placed on top of the cylinder head adapter.

[0030] The drive unit 40 is connected to the water pump 22 for driving the water pump 22 to operate.

[0031] The water tank 30 can be used to hold antifreeze. The water tank 30 is provided with an inlet (not shown in the figure), an outlet (not shown in the figure), and a first drain valve 31. The inlet can be used to communicate with the cylinder head 1, the outlet can be used to communicate with the water pump 22, and the first drain valve 31 is located at the bottom of the water tank 30.

[0032] When the drive unit 40 drives the water pump 22, the antifreeze in the water tank 30 can enter the water passage in the cylinder head adapter 20 through the water pump 22, then enter the water jacket in the cylinder head 1 through the water passage connection port, and finally flow back into the water tank 30 through the inlet of the water tank 30. During this process, the antifreeze can carry out impurities in the inner cavity of the water jacket of the cylinder head 1, and the impurities enter the water tank 30 along with the antifreeze.

[0033] During the operation of water pump 22, impurities settle in water tank 30 as the antifreeze circulates. After water pump 22 stops running, allowing it to stand for a period of time allows the fine particles suspended in the antifreeze to settle completely, thus improving the collection efficiency of impurities. Therefore, to prevent impurities from being carried out of water tank 30 during the circulation of antifreeze, the outlet of water tank 30 can be located near the top of water tank 30.

[0034] In this embodiment, when the detection system detects the cleanliness of the inner cavity of the cylinder head 1 water jacket, the drive device 40 can drive the water pump 22 to run for a set time and then stop it. The antifreeze in the water tank 30 is left to stand for a period of time to allow impurities to settle. Subsequently, the first drain valve 31 is opened to collect the impurities and weigh them for analysis, thereby completing the detection of the cleanliness of the inner cavity of the cylinder head 1 water jacket.

[0035] To further improve the efficiency of impurity collection, refer to Figure 2 In this embodiment, the bottom of the water tank 30 can be a funnel-shaped structure. In this case, the water tank 30 can be considered to include a square cavity and a conical cavity, with the conical cavity located at the bottom of the square cavity. The first drain valve 31 is located at the lowest point of the water tank 30, that is, at the lowest point of the conical cavity. When impurities enter the water tank 30, under the influence of gravity, they enter the conical cavity and, guided by the conical cavity, accumulate at the lowest point of the conical cavity. When the first drain valve 31 is opened, the impurities deposited at the bottom of the water tank 30 can be discharged through the first drain valve 31 as much as possible, which helps to improve the accuracy of the detection.

[0036] In some embodiments, continue to refer to Figure 2 The water tank 30 may also include a second drain valve 32, which is located on the side of the water tank 30, i.e., on the side of the square cavity. When the water pump 22 stops and the antifreeze in the water tank 30 has been standing for a period of time, the second drain valve 32 can be opened first to drain the upper layer of antifreeze, and then the first drain valve 31 can be opened to drain the antifreeze and impurities deposited in the conical cavity.

[0037] Understandably, in this embodiment, the water tank 30 is equipped with a first drain valve 31 and a second drain valve 32. The first drain valve 31 is located at the bottom of the water tank 30, and the second drain valve 32 is located on the side of the water tank 30, that is, the second drain valve 32 is positioned higher than the first drain valve 31. When collecting impurities, most of the antifreeze in the water tank 30 is first drained using the second drain valve 32, and then the remaining antifreeze and impurities in the water tank 30 are drained using the first drain valve 31. In this way, through secondary drainage, not only can stratified drainage be achieved, but the collection efficiency of impurities can also be improved.

[0038] When the antifreeze in the water tank 30 is drained using the second drain valve 32, the impurities will not be drained along with the antifreeze because their position is below the second drain valve 32. After opening the first drain valve 31, the impurities can be drained along with the remaining antifreeze.

[0039] In some embodiments, reference Figure 3 The detection system may also include a filter 70, which is disposed between the first drain valve 31 and the water pump 22, and is connected to the water tank 30 and the water pump 22 via pipelines. When the water pump 22 is driven by the drive device 40, the first drain valve 31 can be opened, and the antifreeze and impurities in the water tank 30 will enter the filter 70 through the pipeline. The filter 70 can filter the impurities in the antifreeze, so that the impurities remain in the filter 70, and the antifreeze enters the water pump 22 through the pipeline for antifreeze circulation.

[0040] In this embodiment, when the water pump 22 is running, the first drain valve 31 opens, and due to the pressure difference, the antifreeze and impurities in the water tank can automatically flow to the filter 70. Furthermore, the collection of impurities can be simultaneously activated during the operation of the water pump 22, reducing the settling time and thus improving the detection efficiency of the cleanliness of the cylinder head water jacket cavity.

[0041] Furthermore, when a filter 70 is installed, the first drain valve 31 can also be a flow valve or other valve that can adjust the liquid flow rate. In this way, the flow rate of the antifreeze can be controlled by adjusting the opening of the first drain valve 31. Since the filtration capacity of the filter 70 is fixed, the flow rate of the antifreeze flowing through the filter 70 can be adjusted at any time by setting the first drain valve 31, so as to ensure that impurities can be filtered and collected when passing through the filter 70, thereby preventing impurities from returning to the cylinder head water jacket and affecting the test results of the cleanliness of the cylinder head water jacket cavity.

[0042] It is worth mentioning that in this embodiment, the diameter of the pipe connected to the filter 70 can be designed to be smaller, which can further control the flow rate of antifreeze flowing through the filter 70, thereby ensuring that the filter 70 can fully filter impurities.

[0043] Of course, in this embodiment, the water tank 30 may also be equipped with a second drain valve 32. After the collection of impurities is completed, the first drain valve 31 and the second drain valve 32 can be opened simultaneously to increase the discharge speed of the antifreeze in the water tank 30, so as to improve the work efficiency.

[0044] In some embodiments, the detection system may further include a heating device (not shown in the figure) for heating the antifreeze, allowing the antifreeze to enter the cylinder head adapter 20 at a preset temperature, thereby better simulating the actual working state of the cylinder head 1. To closely approximate the normal operating state of the cylinder head 1, the heating device can maintain the temperature of the antifreeze in the water tank 30 at 80°C to 90°C.

[0045] Further reference Figure 1 The top of the water tank 30 can also be equipped with a sealed cover 50, which covers the water tank 30 to prevent the antifreeze in the water tank 30 from overflowing. This forms a closed circulation system and ensures the stability of the system during the testing process.

[0046] The top of the water tank 30 can be set higher than the top of the cylinder head 1, so as to ensure that the pressure difference between the inside of the water tank 30 and the water pump 22 is sufficient, and the antifreeze in the water tank 30 can circulate between the cylinder head adapter 20 and the cylinder head 1.

[0047] As an optional implementation scheme, refer to Figure 4 The cylinder head adapter 20 can be an engine block, in which case the model of the engine block matches the model of the cylinder head 1. When the cylinder head 1 is placed on top of the engine block, it allows the water jacket inside the cylinder head 1 to communicate with the water passages inside the engine block. In addition, the water pump 22 can be a water pump structure that is already present in the engine block itself, thus eliminating the need for a separate water pump 22.

[0048] In this scheme, an existing engine block or an old engine block can be used as the test carrier. When the cylinder head 1 is connected to the engine block and the water pump 22 is running, the working conditions of the cylinder head 1 in actual operation can be fully simulated, thus improving the accuracy of the test results.

[0049] Of course, the cylinder head adapter 20 can also be other types of support structures, with internal water channels for supporting and fixing the cylinder head 1, allowing the water channels to communicate with the cylinder head 1. In this way, the cylinder head adapter 20 has a simple structure, can be designed to match different models of cylinder heads 1, and has wider versatility. Furthermore, due to its simple structure, the cylinder head adapter 20 is lighter and easier to transport.

[0050] In some embodiments, combined with Figure 1 and Figure 5 The cylinder head adapter 20 may also be provided with a gear train structure 21, which is located on the same side as the water pump 22. The gear train structure 21 is connected to the water pump 22 in a driving connection, and the drive device 40 is connected to the gear train structure 21 in a driving connection, so that the drive device 40 can drive the water pump 22 through the gear train structure 21 to ensure the smooth operation of the water pump 22.

[0051] It is worth mentioning that when the cylinder head adapter 20 is the engine block, the gear train structure 21 can be the front gear train structure retained by the engine block itself, thus saving the work of arranging a separate gear train structure 21. In this case, the first pulley 211 can be the crankshaft pulley, and the second pulley 212 can be the water pump pulley.

[0052] The gear train structure 21 may include a first pulley 211 and a second pulley 212, which are connected by a belt 213. The first pulley 211 is connected to the drive device 40, and the second pulley 212 is connected to the water pump 22. The gear train structure 21 may also include a tensioning pulley, which may be disposed between the first pulley 211 and the second pulley 212, to tension the belt 213, thereby ensuring the normal operation of the gear train structure 21.

[0053] The drive unit 40 can be an electric motor, which is located on the side of the cylinder head adapter 20 where the gear train structure 21 is provided. The output shaft of the motor is connected to the first pulley 211. When the motor is running, it transmits power to the first pulley 211 through the output shaft, and then to the second pulley 212 through the first pulley 211, thereby driving the water pump 22 to work.

[0054] It is understandable that using belt 213 to connect the first pulley 211 and the second pulley 212 is beneficial to ensuring stable transmission between the first pulley 211 and the second pulley 212. When the first pulley 211 is driven by a motor, the motor runs at its rated speed, which ensures the uniform circulation of coolant between the cylinder head adapter 20 and the cylinder head 1.

[0055] Furthermore, by incorporating a motor in this embodiment, the operating parameters of the water pump 22 can be adjusted according to different cylinder head models 1, such as the flow rate of the antifreeze in the water pump 22. This allows for better adaptation to the testing of different cylinder head models 1, thereby improving the accuracy of the testing results. In specific implementations, the motor can be a speed-regulating motor, which facilitates the adjustment of the motor's operating parameters to match the testing of different cylinder heads 1.

[0056] In some embodiments, a protective net (not shown) may also be provided on the test bench 10, which surrounds the cylinder head adapter 20 and the drive unit 40 to protect the safety of the operators during the testing process.

[0057] In some embodiments, continue to refer to Figure 1 To ensure the cylinder head adapter 20 remains stable when placed on the test bench 10, the test bench 10 may also be equipped with a support member 60. One end of the support member 60 is fixedly connected to the test bench 10, and the other end is detachably connected to the cylinder head adapter 20. There can be multiple support members 60, which work together to support and fix the cylinder head adapter 20, ensuring that the cylinder head adapter 20 remains stable during the testing process.

[0058] In practical implementation, the bottom of the cylinder head adapter 20 can be provided with fixing holes corresponding to multiple support members 60. Each support member 60 can be engaged with the fixing hole to fix the support member 60 to the cylinder head adapter 20. When it is necessary to replace the cylinder head 1 with a different model for testing, the previous cylinder head adapter 20 and support member 60 can be separated, and then the corresponding cylinder head adapter 20 and support member 60 can be fixed.

[0059] Furthermore, when different cylinder head adapters 20 are replaced according to different models of cylinder head 1, the connected pipelines can also be adapted to match them, so that the operating parameters of water pump 22 and pipeline parameters can be adjusted according to different models of cylinder head 1. This can better match the working conditions of cylinder head 1 and improve the accuracy of test results.

[0060] When the cylinder head adapter 20 is used with the engine block, refer to Figure 6The engine block may also include a flywheel housing 23, which and the gear train structure 21 are located on both sides of the engine block. In this case, a fixing hole can be provided at the bottom of the flywheel housing 23. When the support member 60 is fixed to the cylinder head adapter 20, the support member 60 and the fixing hole of the flywheel housing 23 cooperate to keep the cylinder head adapter 20 stable with the test bench 10.

[0061] Based on the specific arrangement of the engine cylinder head water jacket inner cavity cleanliness detection system in the embodiments of this application, when using this detection system to detect the cleanliness of the cylinder head 1 water jacket inner cavity, the following steps can be referred to, for example.

[0062] First, assemble the test bench, fix the cylinder head adapter 20 to the test bench 10, install the cylinder head 1 onto the cylinder head adapter 20, and seal the water passage. Connect the motor to the wheel system structure 21, and fill the water tank 30 with antifreeze and then seal it.

[0063] The test run was then conducted, in which the antifreeze was heated using a heating device to raise its temperature to 85±5℃, and the motor ran at the rated speed of the water pump 22 for 2 hours.

[0064] Next, impurities are collected. After the motor stops and the liquid is left to stand for 30 minutes, the second drain valve 32 is opened to drain the upper layer of antifreeze, and then the first drain valve 31 is opened to collect the precipitated impurities. The impurities are filtered using a filter membrane, dried, and weighed.

[0065] Finally, the cleanliness is calculated, and the impurity content per unit volume is calculated based on the mass of impurities and the volume of circulating liquid.

[0066] The engine cylinder head water jacket inner cavity cleanliness detection system in this embodiment of the utility model uses a cylinder head adapter to detect the cleanliness of the cylinder head water jacket inner cavity. The corresponding cylinder head adapter can be selected according to different cylinder heads, which has strong scalability and versatility.

[0067] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of this utility model. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A system for detecting the cleanliness of the inner cavity of an engine cylinder head water jacket, characterized in that, include: Test bench; A cylinder head adapter is provided on the test bench. A water pump is provided on one side of the cylinder head adapter. A water channel is provided inside the cylinder head adapter. One end of the water channel is connected to the water pump. The other end of the water channel is provided with a connection port for connecting to the cylinder head placed on top of the cylinder head adapter. A drive unit is installed on the test bench, and the drive unit is connected to the water pump to drive the water pump to run; A water tank is provided on the test bench. The water tank is used to contain antifreeze. The water tank is provided with an inlet, an outlet and a first drain valve. The inlet is used to communicate with the cylinder head and the outlet is used to communicate with the water pump. The first drain valve is located at the bottom of the water tank.

2. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 1, characterized in that, It also includes a heating device for heating the antifreeze in the water tank.

3. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 1, characterized in that, The bottom of the water tank has a funnel-shaped structure, and the first drain valve is located at the lowest point of the water tank.

4. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 3, characterized in that, The water tank is also equipped with a second drain valve, which is located on the side of the water tank.

5. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 3 or 4, characterized in that, It also includes a filter, which is disposed between the first drain valve and the water pump.

6. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 5, characterized in that, The first drain valve is a flow valve.

7. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 1, characterized in that, The cylinder head adapter is the engine block.

8. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 1, characterized in that, The cylinder head adapter also includes a wheel system structure, which includes a first pulley and a second pulley. The first pulley and the second pulley are connected by a belt. The first pulley is connected to the drive device, and the second pulley is connected to the water pump.

9. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 8, characterized in that, The driving device is a motor, and the output shaft of the motor is connected to the first pulley for transmission.

10. The engine cylinder head water jacket inner cavity cleanliness detection system according to claim 1, characterized in that, It also includes a support member, one end of which is fixed to the test bench, and the other end of which is detachably connected to the cylinder head adapter.

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