Engine electronic thermostat assembly and control method, engine

Abstract

The present application relates to an engine electronically controlled thermostat assembly and a control method, and an engine. The engine electronically controlled thermostat assembly comprises: a valve seat housing, the valve seat housing being provided with a receiving cavity, the valve seat housing being provided with a large circulation water outlet communicating with the receiving cavity; a cylindrical composite sealing gasket, the cylindrical composite sealing gasket being arranged in the receiving cavity; a cylindrical valve assembly, comprising a cylindrical valve, the cylindrical valve being passed through the cylindrical composite sealing gasket and being coaxial, the cylindrical valve being a four-position four-way valve, the cylindrical composite sealing gasket being adapted to the cylindrical valve. The present application can achieve adjustment of various working positions, improve functional diversity, and thereby adapt to rapid switching of cooling water under different temperatures, reduce the resistance of the cooling system, and furthermore, the overall structure is simple and the volume is small, effectively improving the performance and safety of the engine.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to an engine electronic thermostat assembly and control method, and an engine. Background Art

[0002] In the design of traditional engine cooling systems, wax-type thermostat assemblies are commonly used. However, wax-type thermostats have the following problems:

[0003] 1. If the opening reaction time of a wax-type thermostat exceeds 80 seconds, it will cause the engine to boil due to insufficient cooling.

[0004] 2. The temperature difference between the initial opening and full opening of the wax-type thermostat exceeds 10℃, which cannot guarantee that the engine will operate stably within a reasonable water temperature range.

[0005] 3. Wax-type thermostats have high resistance. Medium-sized engines generally use a dual thermostat solution to reduce resistance, but this takes up a lot of space.

[0006] 4. Limited functionality; it can only switch between the engine's large and small water circulation modes.

[0007] However, in the design of some engine cooling systems, an electronically controlled thermostat structure is used. However, the water inlet with a single round hole on its cylindrical valve body is too small, resulting in high resistance. It also has a limited function, only enabling the switching between the engine's large and small circulation water flows. Summary of the Invention

[0008] Based on this, an engine electronically controlled thermostat assembly and control method, and an engine are provided to improve the performance of the thermostat.

[0009] This application provides an engine electronically controlled thermostat assembly, including:

[0010] The valve seat housing has a receiving cavity and a large circulation outlet communicating with the receiving cavity;

[0011] A cylindrical composite sealing gasket, wherein the cylindrical composite sealing gasket is disposed within the receiving cavity;

[0012] A columnar valve assembly includes a columnar valve, which is disposed within a columnar composite sealing gasket and is coaxial with the columnar valve. The columnar valve is a four-way valve, and the columnar composite sealing gasket is adapted to the columnar valve.

[0013] According to one embodiment of this application, it further includes:

[0014] A large circulation outlet pipe is connected to the large circulation outlet via a first flange, and the large circulation outlet pipe is in communication with the receiving cavity.

[0015] According to one embodiment of this application, the valve seat housing is further provided with a cylinder head water inlet, a retarder water inlet, and a small circulation water outlet, all of which are connected to the receiving cavity.

[0016] According to one embodiment of this application, the cylindrical valve has a first water inlet on its end side and a second water inlet on its side wall, and both the first water inlet and the second water inlet are in communication with the receiving cavity.

[0017] According to one embodiment of this application, the first sprue is circular and the second sprue is rectangular.

[0018] According to one embodiment of this application, the end of the cylindrical composite sealing gasket is provided with a third water inlet adapted to the first water inlet, and the side wall of the cylindrical composite sealing gasket is provided with a fourth water inlet, and both the third water inlet and the fourth water inlet are in communication with the receiving cavity.

[0019] According to one embodiment of this application, the third gate is circular and the fourth gate is rectangular.

[0020] According to one embodiment of this application, the column valve assembly further includes a drive motor, the drive end of which is connected to the column valve to drive the column valve to rotate to the corresponding operating position.

[0021] This application also provides an engine including the engine electronically controlled thermostat assembly of the above embodiments.

[0022] This application also provides a control method for an engine electronic thermostat assembly, used to control the engine electronic thermostat assembly of the above embodiments, comprising the following steps:

[0023] When the water temperature is less than 25℃, the drive motor drives the column valve to rotate to the first working position, so that the second water port of the column valve is connected to the fourth water port of the column composite sealing gasket, and the retarder water inlet of the valve seat housing is connected to the small circulation water outlet, and the cooling water is assisted to be heated through the hydraulic retarder.

[0024] When the water temperature is 25℃~30℃, the column valve is driven to rotate to the second working position by the drive motor, so that the second water port of the column valve is fully connected with the fourth water port of the column composite sealing gasket, and the retarder water inlet and the small circulation water outlet of the valve seat housing are connected.

[0025] When the water temperature is 30℃~90℃, the column valve is driven by the drive motor to rotate to the third working condition position, so that the cylinder head water inlet and the small circulation water outlet of the valve seat housing are connected, and the retarder water inlet and the large circulation water outlet of the valve seat housing are closed, forming a small circulation.

[0026] When the water temperature is 90℃~95℃, the column valve is driven by the drive motor to rotate to the fourth working position, so that the cylinder head water inlet and the large circulation water outlet of the valve seat housing are connected, and the retarder water inlet and the small circulation water outlet of the valve seat housing are closed, forming a large circulation.

[0027] The aforementioned engine electronic thermostat assembly and control method, as well as the engine, have a receiving cavity within the valve seat housing for installing a cylindrical composite sealing gasket and a cylindrical valve assembly. Simultaneously, the valve seat housing is equipped with a large circulation outlet, a cylinder head inlet, a retarder inlet, and a small circulation outlet. The cylindrical valve is configured as a four-position four-way valve, enabling adjustments to various operating conditions, enhancing functional versatility, and adapting to rapid switching under different cooling water temperatures. This reduces cooling system resistance. Furthermore, the overall structure is simple and compact, effectively improving engine performance and safety. Attached Figure Description

[0028] Figure 1 This is a three-dimensional exploded view of an engine electronic thermostat assembly provided in an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the composite sealing gasket of an engine electronically controlled thermostat assembly provided in an embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the columnar valve of an engine electronically controlled thermostat assembly provided in one embodiment of this application.

[0031] Figure 4 This is a cross-sectional view of the valve seat housing of an engine electronic thermostat assembly provided in an embodiment of this application.

[0032] Figure 5 This is a schematic diagram of the cylindrical valve of the engine electronic thermostat assembly in the first operating condition position, provided in an embodiment of this application.

[0033] Figure 6 This is a schematic diagram of the columnar valve of the engine electronic thermostat assembly in the second operating condition position, provided in an embodiment of this application.

[0034] Figure 7 This is a schematic diagram of the columnar valve of the engine electronic thermostat assembly in the third operating condition position, provided in an embodiment of this application.

[0035] Figure 8 This is a schematic diagram of the cylindrical valve of the engine electronic thermostat assembly in the fourth operating condition position, provided in an embodiment of this application.

[0036] Figure 9 This is a schematic diagram of the columnar valve of the engine electronic thermostat assembly in the fifth operating condition position, provided in an embodiment of this application.

[0037] Figure label:

[0038] 1. Valve seat housing; 101. First flange; 102. Second flange; 103. Cylinder head water inlet; 104. Retarder water inlet; 105. Small circulation outlet;

[0039] 2. Large circulation outlet pipe; 201. Large circulation outlet;

[0040] 3. Columnar composite sealing gasket; 301, fourth gate; 302, third gate; 303, sixth gate; 304, seventh gate;

[0041] 4. Column valve assembly; 41. Drive motor; 42. Third flange; 43. Column valve; 431. Second water inlet; 432. Fifth water inlet; 433. First water inlet. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific 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 this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "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 this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via 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 first feature is at a higher horizontal level than the second feature. Similarly, "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 first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0048] like Figures 1 to 9 As shown, this application provides an engine electronically controlled thermostat assembly and control method, and an engine.

[0049] like Figure 1 As shown, Figure 1 This is a three-dimensional exploded view of an engine electronic thermostat assembly provided in an embodiment of this application. The engine electronic thermostat assembly of this embodiment includes:

[0050] The valve seat housing 1 has a receiving cavity and a large circulation outlet 201 communicating with the receiving cavity. The valve seat housing 1 is a key component in the automotive engine cooling system. It supports the thermostat valve seat and connects to other parts of the cooling system to jointly regulate and control the coolant circulation. Its materials include aluminum alloy, cast iron, and plastic. Aluminum alloy has advantages such as light weight, corrosion resistance, and good heat dissipation; cast iron has high strength and wear resistance; and plastic has advantages such as low cost and ease of processing. The valve seat housing 1 supports and fixes the thermostat valve seat, ensuring its correct position in the cooling system. It connects to other cooling system components (such as water pipes and radiators) to form a complete coolant circulation loop and prevents coolant leakage through a sealing structure. The valve seat housing 1 also works with the electronic control system to regulate the coolant circulation path and flow rate through the valve inside the thermostat, thereby controlling the engine cooling effect. Figure 4 , Figure 4 This is a cross-sectional view of the valve seat housing 1 of an engine electronic thermostat assembly provided in an embodiment of this application.

[0051] A cylindrical composite gasket 3 is disposed within the receiving cavity. The cylindrical composite gasket 3 enhances the seal between the cylindrical valve assembly 4 and the valve seat housing 1, preventing coolant leakage or air entry into the cooling system. Simultaneously, during engine operation, the cylindrical composite gasket 3 absorbs and disperses some vibration and impact forces, protecting the cylindrical valve assembly 4 and other engine components from damage. The cylindrical composite gasket 3 has a multi-layered structure, including a metal skeleton layer, a sealing material layer, and a protective layer. The metal skeleton layer provides strength and support, the sealing material layer provides the sealing function, and the protective layer prevents damage to the gasket in harsh environments. The metal skeleton layer is typically made of stainless steel, copper, or aluminum, possessing high strength and good corrosion resistance. Commonly used sealing materials for the sealing material layer include rubber, asbestos, and polytetrafluoroethylene (PTFE). These materials have good elasticity, wear resistance, and corrosion resistance, adapting to different working environments and temperature ranges. The protective layer is located on the surface of the cylindrical composite gasket 3, coated with a special protective material to improve its wear resistance and corrosion resistance.

[0052] The column valve assembly 4 includes a column valve 43, which is housed within a column composite sealing gasket 3 and coaxial with it. The column valve 43 is a four-position four-way valve, and the column composite sealing gasket 3 is compatible with the column valve 43. The column valve assembly 4 is the core component of the thermostat, responsible for adjusting the circulation path and flow rate of the coolant based on engine operating conditions and coolant temperature. It automatically adjusts the amount of coolant entering the radiator according to the coolant temperature, thereby changing the coolant circulation range. Under different engine operating conditions, the electronic control system precisely controls the opening and closing degree of the valve to meet the engine's coolant flow requirements. Specifically, when the coolant temperature is low, the valve core is closed under the action of a spring, and the coolant circulates in a small loop within the engine to reduce heat loss. When the coolant temperature rises to a certain level, the valve core expands due to heat or moves under the command of the electronic control system, opening the valve and allowing the coolant to enter the radiator for a large loop, thereby reducing the engine temperature. The electronically controlled thermostat uses an electronic controller to heat the paraffin core of the thermostat via a heating resistor based on the engine operating conditions and coolant temperature, thereby controlling the coolant flow path and achieving more precise temperature control.

[0053] Figure 3 This is a schematic diagram of the columnar valve structure of an engine electronically controlled thermostat assembly provided in one embodiment of this application. In this embodiment, the columnar valve 43 is configured as a four-position four-way valve, and is equipped with a large circulation outlet 201, a cylinder head inlet 103, a retarder inlet 104, and a small circulation outlet 105 in conjunction with the valve seat housing 1. This allows for adjustment of at least five operating conditions, improving functional versatility and enabling rapid switching under different cooling water temperatures, reducing cooling system resistance. Furthermore, the overall structure is simple and compact, effectively improving engine performance and safety.

[0054] The engine electronically controlled thermostat assembly of this application embodiment further includes:

[0055] Large circulation outlet pipe 2 is connected to large circulation outlet 201 via first flange 101, and is connected to the receiving cavity. Large circulation outlet pipe 2 connects the engine electronic thermostat assembly and the radiator. When the coolant temperature is high, it draws coolant from inside the engine, cools it through the radiator, and then flows back to the engine, forming a large circulation loop in the cooling system. When the coolant temperature reaches the thermostat's set opening temperature, large circulation outlet pipe 2 draws coolant to the radiator, where the radiator's cooling effect lowers the coolant temperature. Large circulation outlet pipe 2 is a crucial part of the large circulation loop in the cooling system, ensuring the circulation of coolant between the engine and the radiator, thereby maintaining the engine's normal operating temperature.

[0056] In addition, the large circulation outlet pipe 2 is typically made of high-temperature and corrosion-resistant materials, such as metals (e.g., aluminum, stainless steel) or plastics (e.g., nylon, polypropylene, etc.), to ensure it can withstand the scouring and corrosion of the high-temperature coolant. The connection between the large circulation outlet pipe 2 and the engine electronic thermostat assembly and radiator is usually achieved using flange connections, threaded connections, or quick couplings to ensure reliable and airtight connections. For ease of maintenance and inspection, the large circulation outlet pipe 2 is usually marked with a flow direction indicator to show the direction of coolant flow.

[0057] In addition, when the engine starts, the coolant circulates within the engine in a small loop to quickly heat it. During this time, the thermostat on the large loop outlet pipe 2 is closed, preventing coolant from entering the radiator. When the coolant temperature reaches the thermostat's set opening temperature, the thermostat opens, and coolant flows through the large loop outlet pipe 2 into the radiator for cooling. The cooled coolant then flows back to the engine through the return pipe, continuing to participate in the cooling system's circulation.

[0058] In the engine electronic thermostat assembly of this application embodiment, the valve seat housing 1 is further provided with a cylinder head water inlet 103, a retarder water inlet 104 and a small circulation water outlet 105, all of which are connected to the receiving cavity.

[0059] Continue reading Figure 3 In the engine electronic thermostat assembly of this application embodiment, a first port 433 is provided on the end side of the cylindrical valve 43, and a second port 431 is provided on the side wall of the cylindrical valve 43. Both the first port 433 and the second port 431 are in communication with the receiving cavity. That is, the end side of the cylindrical valve 43 that is inserted into the cylindrical composite sealing gasket 3 is provided with the first port 433, and the side wall of the cylindrical valve 43 is provided with the second port 431 and the fifth port 432, which are arranged sequentially along the circumference of the cylindrical valve 43. The other end of the cylindrical valve 43 is fixedly installed with the valve seat housing 1 through the connection of the second flange 102 and the third flange 42.

[0060] According to one embodiment of this application, the first gate 433 is circular, the second gate 431 is rectangular, and the fifth gate 432 is rectangular.

[0061] Combination Figure 2 , Figure 2This is a schematic diagram of the composite sealing gasket of an engine electronically controlled thermostat assembly provided in one embodiment of this application. According to one embodiment of this application, the end of the cylindrical composite sealing gasket 3 is provided with a third water inlet 302 adapted to the first water inlet 433, and the side wall of the cylindrical composite sealing gasket 3 is provided with a fourth water inlet 301. Both the third water inlet 302 and the fourth water inlet 301 are connected to the receiving cavity. The first water inlet 433 and the third water inlet 302 are both used to connect to the retarder water inlet 104. Along the circumference of the cylindrical composite sealing gasket 3, the side wall of the cylindrical composite sealing gasket 3 is sequentially provided with a fourth water inlet 301, a sixth water inlet 303, and a seventh water inlet 304. The fourth water inlet 301 is used to connect to the large circulation water outlet pipe 2, the sixth water inlet 303 is used to connect to the cylinder head water inlet 103, and the seventh water inlet 304 is used to connect to the large circulation water outlet pipe 2.

[0062] According to one embodiment of this application, the third gate 302 is circular, while the fourth gate 301, the sixth gate 303, and the seventh gate 304 are all rectangular.

[0063] According to one embodiment of this application, the cylindrical valve assembly 4 further includes a drive motor 41. The drive end of the drive motor 41 is connected to the cylindrical valve 43 to drive the cylindrical valve 43 to rotate to the corresponding operating position. By driving the cylindrical valve 43 to rotate through the drive motor 41, the orientation of the second port 431 and the fifth port 432 can be adjusted, corresponding to the fourth port 301, the sixth port 303, and the seventh port 304 of the cylindrical composite sealing gasket 3, thereby adjusting the cooling water flow path and flow rate under different operating conditions.

[0064] This application also provides an engine including the engine electronically controlled thermostat assembly of the above embodiments.

[0065] This application also provides a control method for an engine electronic thermostat assembly, used to control the engine electronic thermostat assembly of the above embodiments, comprising the following steps:

[0066] Combination Figure 5 , Figure 5 This is a schematic diagram of the cylindrical valve 43 of the engine electronically controlled thermostat assembly in a first operating position according to an embodiment of this application. When the water temperature is less than 25°C, the cylindrical valve 43 is driven to rotate to the first operating position by the drive motor 41, so that the second water port 431 of the cylindrical valve 43 is partially connected to the fourth water port 301 of the cylindrical composite sealing gasket 3, and the retarder inlet 104 and the small circulation outlet 105 of the valve seat housing 1 are connected, and the hydraulic retarder assists in heating the cooling water. In the first operating position, the cooling system water flow is small, and the system automatically activates the hydraulic retarder to assist in heating the cooling water, realizing a rapid warm-up function and raising the water temperature.

[0067] Combination Figure 6 , Figure 6 This is a schematic diagram of the cylindrical valve 43 of the engine electronically controlled thermostat assembly in a second operating position according to an embodiment of this application. When the water temperature is 25℃~30℃, the cylindrical valve 43 is driven to rotate to the second operating position by the drive motor 41, so that the second water port 431 of the cylindrical valve 43 is fully connected to the fourth water port 301 of the cylindrical composite sealing gasket 3, and the retarder water inlet 104 and the small circulation water outlet 105 of the valve seat housing 1 are connected. In the second operating position, the water flow of the cooling system increases.

[0068] Combination Figure 7 , Figure 7 This is a schematic diagram of the columnar valve 43 of the engine electronically controlled thermostat assembly in a third operating position according to an embodiment of this application. When the water temperature is between 30°C and 90°C, the columnar valve 43 is driven to rotate to the third operating position by the drive motor 41, so that the cylinder head water inlet 103 and the small circulation water outlet 105 of the valve seat housing 1 are connected, and the retarder water inlet 104 and the large circulation water outlet 201 of the valve seat housing 1 are closed, forming a small circulation. In the third operating position, the hydraulic retarder water flow is short-circuited, the cooling system resistance is reduced by more than 30%, and when matched with an electronically controlled water pump, the water pump power can be significantly reduced.

[0069] Combination Figure 8 , Figure 8 This is a schematic diagram of the column valve 43 of the engine electronic thermostat assembly in the fourth operating position according to an embodiment of this application. When the water temperature is 90℃~95℃, the column valve 43 is driven to rotate to the fourth operating position by the drive motor 41, so that the cylinder head water inlet 103 of the valve seat housing 1 and the large circulation water outlet 201 are connected, and the retarder water inlet 104 and the small circulation water outlet 105 of the valve seat housing 1 are closed, forming a large circulation.

[0070] Combination Figure 9 , Figure 9 This is a schematic diagram of the column valve 43 of the engine electronically controlled thermostat assembly in the fifth operating position according to an embodiment of this application. When the vehicle is going downhill, the hydraulic retarder is manually activated, and the column valve 43 is driven to rotate to the fifth operating position by the drive motor 41 to ensure sufficient water flow to the retarder and avoid overheating.

[0071] The aforementioned engine electronic thermostat assembly and control method, and engine, have a receiving cavity in the valve seat housing 1 for installing the cylindrical composite sealing gasket 3 and the cylindrical valve assembly 4. Simultaneously, the valve seat housing 1 is provided with a large circulation outlet 201, a cylinder head inlet 103, a retarder inlet 104, and a small circulation outlet 105. The cylindrical valve 43 is configured as a four-position four-way valve, enabling adjustment of various operating conditions, improving functional versatility, and adapting to rapid switching under different cooling water temperatures, reducing cooling system resistance. Furthermore, the overall structure is simple, the size is small, and it effectively improves engine performance and safety.

[0072] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0073] 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 patent application. 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. An engine electronically controlled thermostat assembly, characterized in that, include: The valve seat housing has a receiving cavity and a large circulation outlet communicating with the receiving cavity; A cylindrical composite sealing gasket, wherein the cylindrical composite sealing gasket is disposed within the receiving cavity; A columnar valve assembly includes a columnar valve, the columnar valve being disposed within a columnar composite sealing gasket and coaxial with the columnar valve, the columnar valve being a four-position four-way valve, and the columnar composite sealing gasket being adapted to the columnar valve; A large circulation outlet pipe is connected to the large circulation outlet via a first flange, and the large circulation outlet pipe is in communication with the receiving cavity; The valve seat housing is also provided with a cylinder head water inlet, a retarder water inlet, and a small circulation water outlet, all of which are connected to the receiving cavity. A large circulation outlet pipe is connected to the large circulation outlet via a first flange, and the large circulation outlet pipe is in communication with the receiving cavity; The cylindrical valve has a first water port on one end of the cylindrical composite sealing gasket, and a second water port and a fifth water port on the side wall of the cylindrical valve. The second water port and the fifth water port are arranged sequentially along the circumference of the cylindrical valve. The other end of the cylindrical valve is connected by a second flange and a third flange to realize the fixed installation of the cylindrical valve assembly and the valve seat housing. The end of the cylindrical composite gasket is provided with a third water port that matches the first water port. The side wall of the cylindrical composite gasket is provided with a fourth water port. Both the third and fourth water ports are connected to the receiving cavity. The first and third water ports are used to connect to the retarder water inlet. Along the circumference of the cylindrical composite gasket, the side wall of the cylindrical composite gasket is provided with a fourth water port, a sixth water port, and a seventh water port in sequence. The fourth water port is used to connect to the large circulation water outlet pipe, the sixth water port is used to connect to the cylinder head water inlet, and the seventh water port is used to connect to the large circulation water outlet pipe.

2. The engine electronically controlled thermostat assembly according to claim 1, characterized in that, The first sprue is circular, and the second sprue is rectangular.

3. The engine electronically controlled thermostat assembly according to claim 1, characterized in that, The third water inlet is circular, and the fourth water inlet is rectangular.

4. The engine electronically controlled thermostat assembly according to any one of claims 1 to 3, characterized in that, The column valve assembly also includes a drive motor, the drive end of which is connected to the column valve to drive the column valve to rotate to the corresponding operating position.

5. An engine, characterized in that, Includes the engine electronic thermostat assembly as described in any one of claims 1 to 4.

6. A control method for an engine electronically controlled thermostat assembly, characterized in that, The method for controlling the engine electronic thermostat assembly as described in any one of claims 1 to 4 includes the following steps: When the water temperature is less than 25℃, the drive motor drives the column valve to rotate to the first working position, so that the second water port of the column valve is connected to the fourth water port of the column composite sealing gasket, and the retarder water inlet of the valve seat housing is connected to the small circulation water outlet, and the cooling water is assisted to be heated through the hydraulic retarder. When the water temperature is 25℃~30℃, the column valve is driven to rotate to the second working position by the drive motor, so that the second water port of the column valve is fully connected with the fourth water port of the column composite sealing gasket, and the retarder water inlet and the small circulation water outlet of the valve seat housing are connected. When the water temperature is 30℃~90℃, the column valve is driven by the drive motor to rotate to the third working condition position, so that the cylinder head water inlet and the small circulation water outlet of the valve seat housing are connected, and the retarder water inlet and the large circulation water outlet of the valve seat housing are closed, forming a small circulation. When the water temperature is 90℃~95℃, the column valve is driven by the drive motor to rotate to the fourth working position, so that the cylinder head water inlet and the large circulation water outlet of the valve seat housing are connected, and the retarder water inlet and the small circulation water outlet of the valve seat housing are closed, forming a large circulation.

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