Engine electric control thermostat assembly, control method and engine

Abstract

The invention relates to an engine electric control thermostat assembly, a control method and an engine. The electric control thermostat assembly of the engine comprises a valve seat shell, a valve seat cover, a valve seat cover, a valve seat cover and a valve seat cover, the valve seat shell is provided with a containing cavity, and the valve seat shell is provided with a large circulation water outlet communicated with the containing cavity; the cylindrical composite sealing gasket is arranged in the accommodating cavity; the cylindrical valve assembly comprises a cylindrical valve, the cylindrical valve is arranged in the cylindrical composite sealing gasket in a penetrating mode, the cylindrical valve and the cylindrical composite sealing gasket are coaxial, the cylindrical valve is a four-position four-way valve, and the cylindrical composite sealing gasket is matched with the cylindrical valve. Adjustment of various working condition positions can be achieved, functional diversification is improved, then rapid switching of cooling water at different temperatures is adapted, the resistance of a cooling system is reduced, further, the overall structure is simple, the size is small, and the performance and safety of an engine are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to an engine electronically controlled thermostat assembly and a control method, and an engine. Background Art

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

[0003] 1. If the opening reaction time of the wax thermostat exceeds 80s, the engine will not cool down in time and will boil;

[0004] 2. The difference between the initial opening temperature and the fully open temperature of the wax thermostat is more than 10°C, which cannot ensure that the engine can work stably within a reasonable water temperature range;

[0005] 3. The wax thermostat has large resistance. Generally, medium-sized engines use a dual thermostat solution to reduce resistance, but it takes up a lot of space;

[0006] 4. The function is single and can only realize the water flow switching between the large circulation and small circulation of the engine.

[0007] However, in the design of some engine cooling systems, an electronically controlled thermostat structure is used. However, the water inlet of a single circular hole on the cylindrical valve body is relatively small, resulting in large resistance; the function is single and can only realize the water flow switching between the large circulation and small circulation of the engine. Summary of the invention

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

[0009] The present application provides an engine electronically controlled thermostat assembly, comprising:

[0010] A valve seat housing, wherein the valve seat housing is provided with a receiving cavity, and the valve seat housing is provided with a large circulating water outlet communicating with the receiving cavity;

[0011] A cylindrical composite sealing gasket, wherein the cylindrical composite sealing gasket is disposed in the accommodating cavity;

[0012] The cylindrical valve assembly comprises a cylindrical valve, wherein the cylindrical valve is inserted into the cylindrical composite sealing gasket and is coaxial with the cylindrical valve. The cylindrical valve is a four-position four-way valve, and the cylindrical composite sealing gasket is adapted to the cylindrical valve.

[0013] According to one embodiment of the present application, it also includes:

[0014] A large circulation water outlet pipe is connected to the large circulation water outlet through a first flange, and the large circulation water outlet pipe is communicated with the accommodating cavity.

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

[0016] According to one embodiment of the present application, a first water inlet is provided on the end side of the cylindrical valve, and a second water inlet is provided on the side wall of the cylindrical valve, and both the first water inlet and the second water inlet are connected to the accommodating cavity.

[0017] According to one embodiment of the present application, the first water outlet is circular, and the second water outlet is rectangular.

[0018] According to one embodiment of the present application, a third water inlet matched with the first water inlet is provided at the end of the cylindrical composite sealing gasket, and a fourth water inlet is provided on the side wall of the cylindrical composite sealing gasket. Both the third water inlet and the fourth water inlet are connected to the accommodating cavity.

[0019] According to one embodiment of the present application, the third water outlet is circular, and the fourth water outlet is rectangular.

[0020] According to one embodiment of the present application, the cylindrical valve assembly further includes a driving motor, a driving end of which is connected to the cylindrical valve for driving the cylindrical valve to rotate to a corresponding working position.

[0021] The present application also provides an engine, comprising the engine electronically controlled thermostat assembly of the above embodiment.

[0022] The present application also provides a control method for an engine electronically controlled thermostat assembly, which is used to control the engine electronically controlled thermostat assembly of the above embodiment, and comprises the following steps:

[0023] When the water temperature is less than 25°C, the cylindrical valve is driven by the driving motor to rotate to the first working position, so that the second water port of the cylindrical valve is connected with the fourth water port of the cylindrical composite sealing gasket, and the retarder water inlet of the valve seat housing is connected with the small circulation water outlet, and the cooling water is auxiliary heated by the hydraulic retarder;

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

[0025] When the water temperature is 30℃~90℃, the cylindrical valve is driven by the driving motor to rotate to the third working position, so that the cylinder cover 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 cylindrical valve is driven by the driving motor to rotate to the fourth operating 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 to form a large circulation.

[0027] The above-mentioned engine electronic thermostat assembly and control method, engine, a receiving cavity is provided in the valve seat shell for installing a cylindrical composite sealing gasket and a cylindrical valve assembly, and at the same time, the valve seat shell is provided with a large circulation water outlet, a cylinder head water inlet, a retarder water inlet and a small circulation water outlet, and the cylindrical valve is configured as a four-position four-way valve to achieve adjustment of various working positions, improve functional diversity, and thus adapt to rapid switching of cooling water under different temperature conditions, reduce cooling system resistance, and further, the overall structure is simple, small in size, and effectively improves engine performance and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of a three-dimensional exploded structure of an engine electronically controlled thermostat assembly provided in one embodiment of the present application.

[0029] Figure 2 A schematic structural diagram of a composite sealing gasket for an engine electronically controlled thermostat assembly provided in one embodiment of the present application.

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

[0031] Figure 4 A structural sectional view of a valve seat housing of an engine electronically controlled thermostat assembly provided in one embodiment of the present application.

[0032] Figure 5 A schematic structural diagram of a cylindrical valve of an engine electronically controlled thermostat assembly provided in an embodiment of the present application in a first operating position.

[0033] Figure 6 A schematic structural diagram of a cylindrical valve of an engine electronically controlled thermostat assembly provided in an embodiment of the present application in a second operating position.

[0034] Figure 7 A schematic structural diagram of a cylindrical valve of an engine electronically controlled thermostat assembly provided in an embodiment of the present application in a third operating position.

[0035] Figure 8 A schematic structural diagram of a cylindrical valve of an engine electronically controlled thermostat assembly provided in an embodiment of the present application in a fourth operating position.

[0036] Fig. 9 A schematic structural diagram of a cylindrical valve of an engine electronically controlled thermostat assembly provided in an embodiment of the present application in a fifth operating position.

[0037] Reference numerals:

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

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

[0040] 3. Columnar composite sealing gasket; 301. Fourth water inlet; 302. Third water inlet; 303. Sixth water inlet; 304. Seventh water inlet;

[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 DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, 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 implementation method.

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

[0049] like Figure 1 As shown, Figure 1 The three-dimensional exploded structural diagram of an engine electronically controlled thermostat assembly provided in an embodiment of the present application. The engine electronically controlled thermostat assembly in an embodiment of the present application includes:

[0050] The valve seat housing 1 is provided with a receiving cavity, and the valve seat housing 1 is provided with a large circulating water outlet 201 connected with the receiving cavity; the valve seat housing 1 is a key component in the automobile engine cooling system, which carries the valve seat of the thermostat and is connected with other parts of the cooling system to jointly regulate and control the circulation of the coolant. Its materials include aluminum alloy, cast iron, plastic, etc. Aluminum alloy materials have the advantages of light weight, corrosion resistance, and good heat dissipation; cast iron materials have high strength and wear resistance; plastic materials have the advantages of low cost and easy processing. The valve seat housing 1 is used to carry and fix the valve seat of the thermostat to ensure the correct position of the valve seat in the cooling system. It is also connected with other cooling system components (such as water pipes, radiators, etc.) to form a complete coolant circulation loop, and prevent coolant leakage through a sealing structure. The valve seat housing 1 also cooperates with the electronic control system to adjust the circulation path and flow rate of the coolant through the valve inside the thermostat, thereby controlling the cooling effect of the engine. Combined with Figure 4 , Figure 4 A structural cross-sectional view of a valve seat housing 1 of an engine electronically controlled thermostat assembly provided in one embodiment of the present application.

[0051] The cylindrical composite sealing gasket 3 is arranged in the accommodating cavity; wherein the cylindrical composite sealing gasket 3 is used to improve the sealing box between the cylindrical valve assembly 4 and the valve seat housing 1 to prevent the coolant from leaking out or the air from entering the cooling system. At the same time, during the operation of the engine, the cylindrical composite sealing gasket 3 can absorb and disperse part of the vibration and impact force to protect the cylindrical valve assembly 4 and other parts of the engine from damage. The cylindrical composite sealing gasket 3 has a multi-layer 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 realizes the sealing function, and the protective layer is used to prevent the sealing gasket from being damaged in a harsh environment. The metal skeleton layer is usually made of metal materials such as stainless steel, copper or aluminum, and has high strength and good corrosion resistance. The sealing materials commonly used in the sealing material layer include rubber, asbestos, polytetrafluoroethylene (PTFE), etc. These materials have good elasticity, wear resistance and corrosion resistance, and can adapt to different working environments and temperature ranges. The protective layer is located on the surface of the cylindrical composite sealing gasket 3, and is coated with a layer of special protective material to improve its wear resistance and corrosion resistance.

[0052] The cylindrical valve assembly 4 includes a cylindrical valve 43, which is inserted into the cylindrical composite sealing pad 3 and is coaxial. The cylindrical valve 43 is a four-position four-way valve, and the cylindrical composite sealing pad 3 is adapted to the cylindrical valve 43. The cylindrical valve assembly 4 is the core part of the thermostat, which is responsible for adjusting the circulation path and flow of the coolant according to the engine working condition and the cooling water temperature. According to the high and low temperature of the cooling water, the amount of coolant entering the radiator is automatically adjusted, thereby changing the circulation range of the coolant. Under different working conditions of the engine, the opening and closing degree of the valve is accurately controlled by the electronic control system to meet the engine's demand for coolant flow. The specific working principle is: when the cooling water temperature is low, the valve core is in a closed state under the action of the spring, and the coolant circulates in a small cycle inside the engine to reduce heat loss. When the cooling water temperature rises to a certain level, the valve core expands due to heat or moves under the command of the electronic control system, opens the valve, and allows the coolant to enter the radiator for a large cycle, thereby reducing the engine temperature. The electronically controlled thermostat uses an electronic controller to heat the paraffin core of the thermostat through a heating resistor according to the engine operating conditions and cooling water temperature to control the cooling water flow path and achieve more precise temperature control.

[0053] Figure 3 A schematic diagram of the structure of a columnar valve of an engine electronically controlled thermostat assembly provided in an embodiment of the present application. In the embodiment of the present application, the columnar valve 43 is set as a four-position four-way valve, and the valve seat housing 1 is provided with a large circulation water outlet 201, a cylinder head water inlet 103, a retarder water inlet 104 and a small circulation water outlet 105, which can realize the adjustment of at least five working positions, improve the functional diversity, and then adapt to the rapid switching of cooling water under different temperatures, reduce the resistance of the cooling system, and further, the overall structure is simple, the volume is small, and the performance and safety of the engine are effectively improved.

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

[0055] Large circulation water outlet pipe 2, large circulation water outlet pipe 2 is connected to large circulation water outlet 201 through first flange 101, and large circulation water outlet pipe 2 is communicated with the accommodating cavity. Large circulation water outlet pipe 2 is a pipe connecting the engine electronically controlled thermostat assembly and the radiator, and is used to lead the coolant from the inside of the engine when the coolant temperature is high, and then flow back to the engine after heat dissipation through the radiator, forming a large circulation of the cooling system. When the coolant temperature reaches the opening temperature set by the thermostat, the large circulation water outlet pipe 2 leads the coolant to the radiator, and the temperature of the coolant is reduced through the heat dissipation effect of the radiator. The large circulation water outlet pipe 2 is a key part of the large circulation of the cooling system, which ensures the circulation of the coolant between the engine and the radiator, thereby maintaining the normal operating temperature of the engine.

[0056] In addition, the large circulation water outlet pipe 2 is usually made of high temperature resistant and corrosion resistant materials, such as metal (such as aluminum, stainless steel) or plastic (such as nylon, polypropylene and other high temperature resistant materials) to ensure that it can withstand the scouring and corrosion of high temperature coolant. The connection between the large circulation water outlet pipe 2 and the engine electronic thermostat assembly and the radiator is usually made of flange connection, threaded connection or quick connector to ensure the reliability and sealing of the connection. In order to facilitate maintenance and inspection, the large circulation water outlet pipe 2 is usually marked with a flow direction mark to indicate the flow direction of the coolant.

[0057] In addition, when the engine is started, the coolant circulates in a small amount inside the engine to quickly heat the engine. At this time, the thermostat on the large circulation water outlet pipe 2 is in a closed state, preventing the coolant from entering the radiator. When the coolant temperature reaches the opening temperature set by the thermostat, the thermostat opens, and the coolant enters the radiator through the large circulation water outlet pipe 2 for heat dissipation. The coolant after heat dissipation flows back to the engine through the return pipe and continues to participate in the circulation of the cooling system.

[0058] The engine electronically controlled thermostat assembly of the embodiment of the present application, the valve seat housing 1 is also provided with a cylinder head water inlet 103, a retarder water inlet 104 and a small circulation water outlet 105, and the cylinder head water inlet 103, the retarder water inlet 104 and the small circulation water outlet 105 are all connected to the accommodating cavity.

[0059] Continue reading Figure 3 In the engine electronically controlled thermostat assembly of the embodiment of the present application, the end side of the columnar valve 43 is provided with a first water inlet 433, and the side wall of the columnar valve 43 is provided with a second water inlet 431, and both the first water inlet 433 and the second water inlet 431 are connected to the accommodating cavity. In other words, the end side of the columnar valve 43 inserted into the columnar composite sealing gasket 3 is provided with a first water inlet 433, and the side wall of the columnar valve 43 is provided with a second water inlet 431 and a fifth water inlet 432, and the second water inlet 431 and the fifth water inlet 432 are sequentially arranged along the circumference of the columnar valve 43. Among them, the other end of the columnar valve 43 is connected by the second flange 102 and the third flange 42 to realize the fixed installation of the columnar valve assembly 4 and the valve seat housing 1.

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

[0061] Combination Figure 2 , Figure 2A schematic diagram of the structure of a composite sealing gasket of an engine electronically controlled thermostat assembly provided for an embodiment of the present application. According to one embodiment of the present application, a third water inlet 302 adapted to the first water inlet 433 is provided at the end of the cylindrical composite sealing gasket 3, and a fourth water inlet 301 is provided on the side wall of the cylindrical composite sealing gasket 3, and the third water inlet 302 and the fourth water inlet 301 are both connected to the accommodating cavity. Among them, the first water inlet 433 and the third water inlet 302 are both used to communicate with 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, wherein the fourth water inlet 301 is used to communicate with the large circulation water outlet pipe 2, the sixth water inlet 303 is used to communicate with the cylinder head water inlet 103, and the seventh water inlet 304 is used to communicate with the large circulation water outlet pipe 2.

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

[0063] According to one embodiment of the present application, the cylindrical valve assembly 4 further includes a driving motor 41, and the driving end of the driving motor 41 is connected to the cylindrical valve 43, so as to drive the cylindrical valve 43 to rotate to the corresponding working position. The cylindrical valve 43 is driven to rotate by the driving motor 41, so as to adjust the positions of the second water inlet 431 and the fifth water inlet 432, and the corresponding relationship with the fourth water inlet 301, the sixth water inlet 303 and the seventh water inlet 304 of the cylindrical composite sealing gasket 3, thereby adjusting the cooling water flow path and flow rate under different working conditions.

[0064] The present application also provides an engine, comprising the engine electronically controlled thermostat assembly of the above embodiment.

[0065] The present application also provides a control method for an engine electronically controlled thermostat assembly, which is used to control the engine electronically controlled thermostat assembly of the above embodiment, and comprises the following steps:

[0066] Combination Figure 5 , Figure 5 A schematic diagram of the structure of the column valve 43 of the engine electronic thermostat assembly provided in an embodiment of the present application in the first operating position. When the water temperature is less than 25°C, the column valve 43 is driven to rotate to the first operating position by the driving motor 41, so that the second water port 431 of the column valve 43 is partially connected with the fourth water port 301 of the cylindrical composite sealing gasket 3, and the retarder water inlet 104 of the valve seat housing 1 is connected with the small circulation water outlet 105, and the cooling water is auxiliary heated by the hydraulic retarder. In the first operating position, the water flow of the cooling system is small, and the system automatically turns on the hydraulic retarder to assist in heating the cooling water, realizing the rapid warm-up function and increasing the water temperature.

[0067] Combination Figure 6 , Figure 6 A schematic diagram of the structure of the cylindrical valve 43 of the engine electronically controlled thermostat assembly provided in an embodiment of the present application in the second working position. When the water temperature is 25°C to 30°C, the cylindrical valve 43 is driven to rotate to the second working position by the driving motor 41, so that the second water port 431 of the cylindrical valve 43 is fully connected with the fourth water port 301 of the cylindrical composite sealing gasket 3, and the retarder water inlet 104 of the valve seat housing 1 is connected with the small circulation water outlet 105. In the second working position, the water flow of the cooling system increases.

[0068] Combination Figure 7 , Figure 7 A schematic diagram of the structure of the column valve 43 of the engine electronically controlled thermostat assembly provided in an embodiment of the present application in the third operating position. When the water temperature is 30°C to 90°C, the column valve 43 is driven by the drive motor 41 to rotate to the third operating position, so that the cylinder head water inlet 103 of the valve seat housing 1 and the small circulation water outlet 105 are connected, and the retarder water inlet 104 and the large circulation water outlet 201 of the valve seat housing 1 are closed to form a small circulation. The third operating position realizes the short circuit of the hydraulic retarder water flow, and the cooling system resistance is reduced by more than 30%. When matching the electronically controlled water pump, the water pump power can be greatly reduced.

[0069] Combination Figure 8 , Figure 8 A schematic diagram of the structure of the cylindrical valve 43 of the engine electronically controlled thermostat assembly provided in an embodiment of the present application in the fourth working position. When the water temperature is 90°C to 95°C, the cylindrical valve 43 is driven by the driving motor 41 to rotate to the fourth working position, 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 Fig. 9 , Fig. 9 A schematic diagram of the structure of the cylindrical valve 43 of the engine electronically controlled thermostat assembly provided in an embodiment of the present application in the fifth working position. When the vehicle is in a downhill condition, the hydraulic retarder is manually opened, and the cylindrical valve 43 is driven by the drive motor 41 to rotate to the fifth working position to ensure sufficient retarder water flow and avoid high temperature.

[0071] In the above-mentioned engine electronically controlled thermostat assembly and control method, and engine, a receiving cavity is provided in the valve seat housing 1 for installing a cylindrical composite sealing gasket 3 and a cylindrical valve assembly 4. At the same time, the valve seat housing 1 is provided with a large circulation water outlet 201, a cylinder head water inlet 103, a retarder water inlet 104 and a small circulation water outlet 105. The cylindrical valve 43 is provided as a four-position four-way valve to achieve adjustment of various working positions, improve functional diversity, and thus adapt to rapid switching of cooling water under different temperatures, reduce cooling system resistance, and further, the overall structure is simple and small in size, which effectively improves the performance and safety of the engine.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An engine electronically controlled thermostat assembly, characterized in that: include: A valve seat housing, wherein the valve seat housing is provided with a receiving cavity, and the valve seat housing is provided with a large circulating water outlet communicating with the receiving cavity; A cylindrical composite sealing gasket, wherein the cylindrical composite sealing gasket is disposed in the accommodating cavity; The cylindrical valve assembly comprises a cylindrical valve, wherein the cylindrical valve is inserted into the cylindrical composite sealing gasket and is coaxial with the cylindrical valve. The cylindrical valve is a four-position four-way valve, and the cylindrical composite sealing gasket is adapted to the cylindrical valve.

2. The engine electronically controlled thermostat assembly according to claim 1, characterized in that: Also includes: A large circulation water outlet pipe is connected to the large circulation water outlet through a first flange, and the large circulation water outlet pipe is communicated with the accommodating cavity.

3. The engine electronically controlled thermostat assembly according to claim 1, characterized in that: The valve seat housing is also provided with a cylinder cover water inlet, a retarder water inlet and a small circulation water outlet, and the cylinder cover water inlet, the retarder water inlet and the small circulation water outlet are all communicated with the accommodating cavity.

4. The engine electronically controlled thermostat assembly according to claim 1, characterized in that: A first water inlet is provided at the end side of the cylindrical valve, and a second water inlet is provided at the side wall of the cylindrical valve. Both the first water inlet and the second water inlet are communicated with the accommodating cavity.

5. The engine electronically controlled thermostat assembly according to claim 4, characterized in that: The first water outlet is circular, and the second water outlet is rectangular.

6. The engine electronically controlled thermostat assembly according to claim 4 or 5, characterized in that: A third water inlet matched with the first water inlet is disposed at the end of the columnar composite sealing gasket, and a fourth water inlet is disposed on the side wall of the columnar composite sealing gasket. Both the third water inlet and the fourth water inlet are communicated with the accommodating cavity.

7. The engine electronically controlled thermostat assembly according to claim 6, characterized in that: The third water outlet is circular, and the fourth water outlet is rectangular.

8. The engine electronically controlled thermostat assembly according to any one of claims 1 to 5, characterized in that: The cylindrical valve assembly also includes a driving motor, a driving end of which is connected to the cylindrical valve to drive the cylindrical valve to rotate to a corresponding working position.

9. An engine, characterized in that: It comprises an engine electronically controlled thermostat assembly as claimed in any one of claims 1 to 8.

10. A control method for an engine electronically controlled thermostat assembly, characterized in that: The method for controlling the electronically controlled thermostat assembly of an engine according to any one of claims 1 to 8 comprises the following steps: When the water temperature is less than 25°C, the cylindrical valve is driven by the driving motor to rotate to the first working position, so that the second water port of the cylindrical valve is connected with the fourth water port of the cylindrical composite sealing gasket, and the retarder water inlet of the valve seat housing is connected with the small circulation water outlet, and the cooling water is auxiliary heated by the hydraulic retarder; When the water temperature is 25℃~30℃, the cylindrical valve is driven by the driving motor to rotate to the second working position, so that the second water port of the cylindrical valve and the fourth water port of the cylindrical composite sealing gasket are fully connected, and the retarder water inlet of the valve seat housing is connected with the small circulation water outlet; When the water temperature is 30℃~90℃, the cylindrical valve is driven by the driving motor to rotate to the third working position, so that the cylinder cover 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 cylindrical valve is driven by the driving motor to rotate to the fourth operating 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 to form a large circulation.

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