Engine and vehicle

Abstract

The utility model relates to an engine and a vehicle. The engine comprises a cylinder cover and a water cavity plug, the cylinder cover is provided with an air inlet channel, an exhaust channel, a water inlet, a water outlet and a water flowing cavity, the water inlet is close to the exhaust channel, the water outlet is close to the air inlet channel, and the water flowing cavity is arranged on the periphery of the air inlet channel and the exhaust channel and communicated with the water inlet. The water cavity plug is arranged on the air cylinder cover and extends into the water flowing cavity, and a first intercepting channel is formed in the side, close to the exhaust channel, of the water flowing cavity. According to the engine, the water cavity plug is arranged on the air cylinder cover, the water cavity can extend into the water flowing cavity to form the first intercepting channel on the side, close to the exhaust passage, of the water flowing cavity, the sectional area of the side, close to the exhaust passage, of the water flowing cavity is reduced, and therefore the flow speed of cooling liquid on the side, close to the exhaust passage, of the water flowing cavity can be increased; the heat transfer efficiency is improved, the temperature of cooling water can be rapidly increased, the engine can rapidly enter the optimal operation state, and emission at the initial stage of starting is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an engine and a vehicle. Background Technology

[0002] The four-valve water-cooled engine employs an asymmetric cooling water channel layout, with the water inlet located on the exhaust manifold side and the water outlet on the intake manifold side. When the engine is running, the water flows systematically over the spark plugs and around the intake / exhaust manifolds. This design efficiently removes heat generated by the cylinder head, ensuring that the engine's performance and stability are not affected by overheating during operation. However, after the engine starts, the water temperature rises slowly, and it takes a long time for the engine to reach its optimal operating state. During this period, the combustion process is detrimental to emissions. Utility Model Content

[0003] Therefore, it is necessary to provide an engine and a vehicle to address the aforementioned technical problems.

[0004] An engine comprising:

[0005] A cylinder head having an intake manifold, an exhaust manifold, a water inlet, a water outlet, and a water flow chamber, wherein the water inlet is located near the exhaust manifold, the water outlet is located near the intake manifold, and the water flow chamber is located on the outer periphery of the intake manifold and the exhaust manifold, and communicates with the water inlet; and

[0006] A water chamber plug is disposed on the cylinder head. The water chamber plug extends into the water flow chamber and forms a first flow-blocking channel on the side of the water flow chamber near the exhaust port.

[0007] The aforementioned engine, by installing a water chamber plug on the cylinder head, allows the water chamber to extend into the water flow chamber, forming a first throttling channel on the side of the water flow chamber near the exhaust port. This reduces the cross-sectional area of ​​the water flow chamber on the side near the exhaust port, thereby increasing the flow velocity of the coolant in the water flow chamber near the exhaust port, improving heat transfer efficiency, rapidly raising the coolant temperature, enabling the engine to quickly reach its optimal operating state, and improving emissions during the initial startup phase.

[0008] In one embodiment, a first gap is formed between the water cavity plug and the side wall of the water flow cavity near the exhaust passage, and a second gap is formed between the water cavity plug and the bottom wall of the water flow cavity. The first gap and the second gap cooperate to form the first intercepting channel; wherein the water cavity plug extends toward the bottom wall of the water flow cavity.

[0009] In one embodiment, the side wall of the water passage near the exhaust passage includes a first intercepting portion and a first recessed portion, the first intercepting portion and the water passage plug cooperate to form part of the first intercepting channel, and the first recessed portion is adjacent to the first intercepting portion.

[0010] In one embodiment, a first smooth transition zone is provided between the first recess and the first intercepting portion.

[0011] In one embodiment, the engine further includes a spark plug disposed on the cylinder head and located between the intake manifold and the exhaust manifold;

[0012] The water flow chamber is also located on the outer periphery of the spark plug, and the water chamber plug also forms a second flow-blocking channel on the side of the water flow chamber near the spark plug.

[0013] In one embodiment, a third gap is provided between the water chamber plug and the side wall surface near the spark plug, and a fourth gap is provided between the water chamber plug and the bottom wall surface of the water flow chamber. The third gap and the fourth gap cooperate to form the second flow-blocking channel; wherein the water chamber plug extends toward the bottom wall surface of the water flow chamber.

[0014] In one embodiment, the side wall of the water flow chamber near the spark plug includes a second intercepting portion and a second recessed portion, the second intercepting portion and the water chamber plug cooperating to form part of the second intercepting channel, and the second recessed portion adjacent to the second intercepting portion.

[0015] In one embodiment, a second smooth transition zone is provided between the second intercepting portion and the second intercepting portion.

[0016] In one embodiment, there are two intake manifolds and two exhaust manifolds, which are located on different sides of the cylinder head.

[0017] A vehicle comprising an engine as described in any of the preceding claims.

[0018] The aforementioned vehicle, by installing a water chamber plug on the cylinder head of the engine, allows the water chamber to extend into the water flow chamber, forming a first intercepting channel on the side of the water flow chamber near the exhaust port. This reduces the cross-sectional area of ​​the water flow chamber on the side near the exhaust port, thereby increasing the flow rate of coolant on the side of the water flow chamber near the exhaust port, improving heat transfer efficiency, rapidly raising the coolant temperature, allowing the engine to quickly enter its optimal operating state, and improving emissions during the initial startup phase. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the flow of coolant in the cylinder head of an engine according to an embodiment of this application. Figure 1 The dashed arrows in the diagram represent the direction of coolant flow.

[0020] Figure 2 for Figure 1A partial cross-sectional view at point AA.

[0021] Figure 3 for Figure 1 A magnified view of a portion of the image.

[0022] Figure 4 for Figure 1 A partial cross-sectional view at point BB.

[0023] The labels in the attached figures are explained as follows:

[0024] 110. Air intake; 120. Exhaust duct; 130. Water inlet; 140. Water outlet; 150. Water flow chamber; 151. First intercepting channel; 151a. First gap; 151b. Second gap; 152. Second intercepting channel; 152a. Third gap; 152b. Fourth gap; 153. First intercepting part; 154. First recessed part; 155. First smooth transition area; 200. Water chamber plug; 210. Screw part; 220. Mounting part; 300. Spark plug. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] In the automotive industry, especially in high-performance sedans and SUVs (Sports Utility Vehicles), four-valve liquid-cooled engines are very common. During driving, the engine operates under high load for extended periods, generating a significant amount of heat. The powerful cooling capacity of a four-valve liquid-cooled engine ensures stable operation under various road conditions, providing continuous and robust power output. Furthermore, it can also be found in some mid-to-large-sized motorcycles. Motorcycle riding involves frequent speed changes, placing stringent demands on engine responsiveness and cooling performance; the four-valve liquid-cooled engine meets these requirements, ensuring a smooth and safe ride.

[0032] A four-valve, water-cooled engine includes components such as the cylinder block, cylinder head, cooling system, and spark plugs. The cylinder block, as the basic engine component, contains cylinder bores for piston movement. The cylinder head, mounted on top of the cylinder block, forms the combustion chamber. The cylinder head contains intake and exhaust passages, which connect to the two intake valves and two exhaust valves of the combustion chamber, respectively, to achieve efficient gas exchange. The cooling system introduces coolant into the water channels inside the cylinder block and cylinder head through the inlet, absorbs heat, and then discharges it through the outlet, ensuring stable engine temperature. The spark plugs are mounted on the cylinder head, with their ignition tip extending into the combustion chamber to ignite the air-fuel mixture, thus achieving combustion and power. The spark plugs are surrounded by intake and exhaust valves, ensuring coordinated ignition and valve movement to improve engine performance.

[0033] When the engine is running, coolant flows systematically around the spark plugs and intake / exhaust ports. This design efficiently removes heat generated by the cylinder head, ensuring the engine's performance and stability are not affected by overheating. However, after the engine starts, the coolant takes a considerable amount of time to absorb enough heat after entering through the inlet and circulate to the radiator through the outlet. Simultaneously, the engine's combustion efficiency is lower at low temperatures, resulting in incomplete combustion of the air-fuel mixture and less heat generation. Therefore, it takes longer for the engine to reach its optimal operating state, and this incomplete combustion negatively impacts emissions, increasing the release of harmful gases.

[0034] In this regard, one embodiment of this application provides an engine, which can be a four-valve water-cooled engine, applicable to high-performance cars, SUVs, or motorcycles, ensuring stable vehicle operation. Of course, the engine can also be a two-valve engine.

[0035] like Figure 1 As shown, the engine housing includes a cylinder block, cylinder head, cooling system, spark plug 300, and water chamber plug 200. The cylinder block, as the basic component of the engine, has cylinder bores inside for piston movement.

[0036] The cylinder head is mounted above the cylinder block and, together with the cylinder block, forms the combustion chamber, such as Figure 1 As shown, the cylinder head has an intake manifold 110, an exhaust manifold 120, a water inlet 130, a water outlet 140, and a water passage 150. The intake manifold 110 and exhaust manifold 120 are connected to the intake valve and exhaust valve of the combustion chamber, respectively. The water inlet 130 is located near the exhaust manifold 120, and the water outlet 140 is located near the intake manifold 110. The water passage 150 is located on the outer periphery of the intake manifold 110 and the exhaust manifold 120, and is connected to the water inlet 130. It should be noted that during engine operation, the exhaust manifold 120 has the highest temperature, the intake manifold 110 has the lowest temperature, and the temperature of the spark plug 300 is present between the exhaust manifold 120 and the intake manifold 110.

[0037] The number of intake manifolds 110 and exhaust manifolds 120 can be set according to the number of intake and exhaust valves in the combustion chamber. For example, such as... Figure 1 As shown, when the engine is a four-valve water-cooled engine, the combustion chamber has two intake valves and two exhaust valves. The intake manifold 110 and exhaust manifold 120 are also provided as two separate units. Each intake manifold 110 is connected to a corresponding intake valve, and each exhaust manifold 120 is connected to a corresponding exhaust valve. Specifically, the two intake manifolds 110 are located on the side of the cylinder head near the water outlet 140, and the two intake manifolds 120 are located on the side of the cylinder head near the water inlet 130; that is, the intake manifolds 110 and exhaust manifolds 120 are located on different sides of the cylinder head. Again, as an example, when the engine is a two-valve engine, the combustion chamber has one intake valve and one exhaust valve. The intake manifold 110 and exhaust manifold 120 are also provided as one separate unit. The intake manifold 110 is connected to the intake valve, and the exhaust manifold 120 is connected to the exhaust valve.

[0038] The number of inlet 130 and outlet 140 can be set to one or two, depending on the engine's cooling requirements and design layout. A single inlet / single outlet design is simple and practical, while a dual inlet / dual outlet design is more suitable for high-performance engines to ensure efficient cooling. Of course, other designs are also possible... Figure 1 As shown, it is designed with a dual inlet and single outlet configuration, that is, it is equipped with two inlets 130 and one outlet 140.

[0039] The water drain chamber 150 needs to be closely arranged around high-temperature areas such as the combustion chamber, intake valves, exhaust valves, and spark plug 300 to ensure these areas are adequately cooled. It also needs to ensure the structural strength of the cylinder head, especially under high-load conditions, where the cylinder head must withstand combustion pressure and the impact of the valve mechanism. The water drain chamber 150 can be configured as needed. Figure 1 The circular shape shown can also be set to a vertical or horizontal intersecting shape.

[0040] The cooling system introduces coolant into the water passages inside the cylinder block and cylinder head through the inlet 130, absorbs heat, and then discharges it from the outlet 140 to ensure stable engine temperature.

[0041] The spark plug 300 is installed on the cylinder head and located between the intake manifold 110 and the exhaust manifold 120. The water passage 150 is also located on the outer periphery of the spark plug 300. The ignition end of the spark plug 300 extends into the combustion chamber to ignite the air-fuel mixture, thereby achieving combustion and power. The spark plug 300 is surrounded by intake and exhaust valves to ensure the coordinated operation of ignition and valve movement, thereby improving engine performance.

[0042] like Figure 1 As shown, the water chamber plug 200 is disposed on the cylinder head, extending into the water passage chamber 150 and forming a first throttling channel 151 on the side of the water passage chamber 150 near the exhaust port 120. The cylinder head has a water chamber plug mounting hole on the side of the water passage chamber 150 near the exhaust port 120, into which the water chamber plug 200 can be installed and extend into the water passage chamber 150. The water chamber plug mounting hole can be a threaded hole, allowing the water chamber plug 200 to be screwed in for easy installation and removal. Alternatively, the water chamber plug 200 can also be installed in the water chamber plug mounting hole by welding, bonding, snap-fitting, or integral molding. The structure of the water chamber plug 200 is described as follows... Figure 2 As shown, the water cavity plug 200 includes a connected mounting portion 220 and a screw portion 210. The screw portion 210 is screwed into the water cavity plug mounting hole. The mounting portion 220 facilitates the screwing of the water cavity plug 200. This application does not limit the structure of the water cavity plug 200.

[0043] like Figure 2As shown, the water chamber plug 200 extends into the water flow chamber 150, occupying a portion of the water flow chamber 150. This reduces the cross-sectional area of ​​the side of the water flow chamber 150 closest to the exhaust port 120. According to the fluid continuity equation, if the fluid flow rate remains constant, the flow velocity will necessarily increase when the cross-sectional area decreases. The specific relationship is as follows: ν2=(A1×ν1) / A2, where A1 and A2 are the cross-sectional areas, and ν1 and ν2 are the flow velocities. It can be seen from the formula that if the cross-sectional area decreases, the flow velocity increases. When the flow rate of the coolant (such as cooling water) increases, the relative motion between the coolant and the cavity wall of the water passage 150 near the exhaust port 120 intensifies. This results in more heat being transferred from the high-temperature surface to the coolant through convection heat transfer. The high-speed flow of the coolant can carry away heat more quickly, thereby improving heat transfer efficiency and rapidly increasing the coolant temperature, allowing the engine to quickly enter its optimal operating state and improving emissions during the initial start-up phase. Moreover, the high flow rate easily causes the coolant to change from a laminar flow state to a turbulent flow state. In the turbulent state, the mixing inside the coolant is more intense, and the heat distribution is more uniform, thereby significantly improving heat transfer efficiency. The disturbance effect of turbulence can break the thermal boundary layer and further enhance heat transfer.

[0044] Therefore, the engine provided in this application, by setting a water chamber plug 200 on the cylinder head, can extend the water chamber plug 200 into the water passage 150 to form a first intercepting channel 151 on the side of the water passage 150 near the exhaust port 120, thereby reducing the cross-sectional area of ​​the side of the water passage 150 near the exhaust port 120. This can increase the flow rate of coolant on the side of the water passage 150 near the exhaust port 120, thereby improving the heat transfer efficiency, quickly raising the coolant temperature, enabling the engine to quickly enter the optimal operating state, and improving emissions during the initial start-up phase.

[0045] In some embodiments of this application, such as Figure 2 As shown, a first gap 151a exists between the water chamber plug 200 and the side wall of the water flow chamber 150 near the exhaust passage 120, and a second gap 151b exists between the water chamber plug 200 and the bottom wall of the water flow chamber 150. The first gap 151a and the second gap 151b cooperate to form a first intercepting channel 151. The water chamber plug 200 extends towards the bottom wall of the water flow chamber 150, for example, the bottom wall of the water flow chamber 150 is perpendicular to the central axis of the water chamber plug 200. With this arrangement, as... Figure 2As shown, this design not only reduces the width W1 and length L1 of the side of the water cavity 150 near the exhaust passage 120, effectively reducing the cross-sectional area of ​​the side of the water cavity 150 near the exhaust passage 120, but also leaves gaps between the water cavity plug 200 and the side wall of the water cavity 150 near the exhaust passage 120, and between the water cavity plug 200 and the bottom wall of the water cavity 150. This reduces dead zones or areas with poor flow in the water cavity 150, preventing local overheating, and also reduces the flow resistance of the coolant in the water cavity 150, ensuring smooth flow of the coolant and improving cooling efficiency.

[0046] The sizes of the first gap 151a and the second gap 151b can be set according to requirements, and this application does not impose specific restrictions on them.

[0047] In some embodiments of this application, such as Figure 2 As shown, the surface of the water chamber plug 200 facing the bottom wall of the water flow chamber 150 is flat. Compared with other structures, such as the water chamber plug 200 having an outwardly protruding triangular structure on the surface facing the bottom wall of the water flow chamber 150, the flat structure of this application facilitates the production and processing of the water chamber plug 200 and the water flow chamber 150, and can also reduce the flow resistance of cooling, ensure that the coolant can flow smoothly, and improve the cooling efficiency.

[0048] In some embodiments of this application, such as Figure 3 As shown, the side wall of the water inlet chamber 150 near the exhaust passage 120 includes a first intercepting portion 153 and a first recessed portion 154. The first intercepting portion 153 and the water chamber plug 200 cooperate to form part of the first intercepting channel 151, and the first recessed portion 154 is adjacent to the first intercepting portion 153. The first recessed portion 154 can increase the area of ​​the side wall of the water inlet chamber 150 near the exhaust passage 120, increase the heat transfer area between the water inlet chamber 150 and the exhaust passage 120, further increase the heat transfer, and quickly raise the cooling water temperature, allowing the engine to quickly enter the optimal operating state and improve emissions during the initial start-up.

[0049] The number of the first intercepting portion 153 and the first recessed portion 154 can be set according to the number of exhaust passages 120. For example, Figure 1 and Figure 3 As shown, when there are two exhaust ducts 120, there are two first intercepting portions 153 and two first recessed portions 154, with each exhaust duct 120 corresponding to one first intercepting portion 153 and one first recessed portion 154. Again, as an example, when there is one exhaust duct 120, there is one first intercepting portion 153 and one first recessed portion 154.

[0050] like Figure 3As shown, a first smooth transition region 155 is provided between the first recess 154 and the first intercepting portion 153. The first smooth transition region 155 reduces the flow resistance of the coolant in the water circulation chamber 150, ensuring smooth coolant flow and improving cooling efficiency. The walls of both the first recess 154 and the first intercepting portion 153 are streamlined; for example, the first recess 154 is semi-circular, and the first intercepting portion 153 is arc-shaped. This design further reduces the flow resistance of the coolant in the water circulation chamber 150, ensuring smooth coolant flow and improving cooling efficiency.

[0051] As engine emissions become increasingly stringent, engines typically employ methods such as increasing the compression ratio, lean combustion, or adding exhaust gas recirculation (EGR) to achieve cleaner combustion. However, these methods raise combustion chamber temperatures, leading to increased cylinder head temperatures (especially around the spark plug 300), causing localized overheating. Under high load operation, this can result in abnormal combustion conditions such as knocking, damaging the engine. Therefore, [further measures are needed]. Figure 4 As shown, in some embodiments of this application, the water chamber plug 200 also has a second flow-blocking channel 152 formed on the side of the water chamber 150 near the spark plug 300. For example... Figure 4 As shown, the water chamber plug 200 extends into the water flow chamber 150, which can occupy a part of the water flow chamber 150, thereby reducing the cross-sectional area of ​​the side of the water flow chamber 150 near the spark plug 300, increasing the coolant flow rate, improving heat transfer efficiency, reducing the temperature at the spark plug 300, and avoiding abnormal combustion such as knocking.

[0052] like Figure 4 As shown, in some embodiments, a third gap 152a is formed between the water chamber plug 200 and the side wall surface near the spark plug 300, and a fourth gap 152b is formed between the water chamber plug 200 and the bottom wall surface of the water flow chamber 150. The third gap 152a and the fourth gap 152b cooperate to form a second flow-blocking channel 152. This arrangement not only reduces the width W2 and length L2 of the side of the water flow chamber 150 near the spark plug 300, effectively reducing the cross-sectional area of ​​that side, but also ensures that gaps are maintained between the water chamber plug 200 and the side wall surface near the spark plug 300, as well as between the water chamber plug 200 and the bottom wall surface of the water flow chamber 150. This reduces dead zones or areas of poor flow in the water flow chamber 150, preventing localized overheating and reducing the flow resistance of the coolant in the water flow chamber 150, ensuring smooth coolant flow and improving cooling efficiency.

[0053] The sizes of the third gap 152a and the fourth gap 152b can be set according to requirements, and this application does not impose specific restrictions on them.

[0054] In some embodiments of this application, the side wall surface of the water-cooling cavity 150 near the spark plug 300 includes a second flow-blocking portion and a second recessed portion. The second flow-blocking portion and the spark plug 300 cooperate to form a part of the second flow-blocking channel 152, and the second recessed portion is adjacent to the second flow-blocking portion. The second recessed portion can increase the area of ​​the side wall surface of the water-cooling cavity 150 near the spark plug 300, increase the heat transfer area between the water-cooling cavity 150 and the spark plug 300, further increase the heat transfer, and effectively reduce the temperature at the spark plug 300, avoiding abnormal combustion such as knocking.

[0055] The number of the second intercepting portion and the second recessed portion can be set according to the situation, and this application does not impose specific restrictions on this.

[0056] A second smooth transition zone exists between the second recess and the second interceptor. This second smooth transition zone reduces the flow resistance of the coolant in the water circulation chamber 150, ensuring smooth coolant flow and improving cooling efficiency. Furthermore, the walls of both the second recess and the second interceptor are streamlined; for example, the second recess is semi-circular, and the second interceptor is arc-shaped. This design further reduces the flow resistance of the coolant in the water circulation chamber 150, ensuring smooth coolant flow and improving cooling efficiency.

[0057] On the other hand, one embodiment of this application also provides a vehicle that includes an engine as described in any of the foregoing claims. The vehicle may be a high-performance sedan, SUV, or motorcycle, or other types of vehicle.

[0058] The vehicle provided in this application, by setting a water chamber plug 200 on the cylinder head of the engine, can extend the water chamber plug 200 into the water flow chamber 150 to form a first intercepting channel 151 on the side of the water flow chamber 150 near the exhaust port 120, thereby reducing the cross-sectional area of ​​the side of the water flow chamber 150 near the exhaust port 120. This can increase the flow rate of coolant on the side of the water flow chamber 150 near the exhaust port 120, thereby improving the heat transfer efficiency, quickly raising the coolant temperature, allowing the engine to quickly enter the optimal operating state, and improving emissions during the initial start-up phase.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] 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, characterized in that, include: A cylinder head having an intake manifold, an exhaust manifold, a water inlet, a water outlet, and a water flow chamber, wherein the water inlet is located near the exhaust manifold, the water outlet is located near the intake manifold, and the water flow chamber is located on the outer periphery of the intake manifold and the exhaust manifold, and communicates with the water inlet; and A water chamber plug is disposed on the cylinder head. The water chamber plug extends into the water flow chamber and forms a first flow-blocking channel on the side of the water flow chamber near the exhaust port.

2. The engine according to claim 1, characterized in that, There is a first gap between the water cavity plug and the side wall of the water flow cavity near the exhaust channel, and a second gap between the water cavity plug and the bottom wall of the water flow cavity. The first gap and the second gap cooperate to form the first intercepting channel; wherein, the water cavity plug extends toward the bottom wall of the water flow cavity.

3. The engine according to claim 1, characterized in that, The side wall of the water passage near the exhaust passage includes a first intercepting portion and a first recessed portion. The first intercepting portion and the water passage plug cooperate to form part of the first intercepting channel. The first recessed portion is adjacent to the first intercepting portion.

4. The engine according to claim 3, characterized in that, There is a first smooth transition zone between the first recess and the first interception portion.

5. The engine according to any one of claims 1 to 4, characterized in that, The engine also includes a spark plug, which is disposed on the cylinder head and located between the intake manifold and the exhaust manifold; The water flow chamber is also located on the outer periphery of the spark plug, and the water chamber plug also forms a second flow-blocking channel on the side of the water flow chamber near the spark plug.

6. The engine according to claim 5, characterized in that, There is a third gap between the water cavity plug and the side wall surface near the spark plug, and a fourth gap between the water cavity plug and the bottom wall surface of the water flow cavity. The third gap and the fourth gap cooperate to form the second interception channel; wherein, the water cavity plug extends toward the bottom wall surface of the water flow cavity.

7. The engine according to claim 5, characterized in that, The side wall of the water flow chamber near the spark plug includes a second intercepting portion and a second recessed portion. The second intercepting portion and the water chamber plug cooperate to form part of the second intercepting channel. The second recessed portion is adjacent to the second intercepting portion.

8. The engine according to claim 7, characterized in that, There is a second smooth transition zone between the second intercepting section and the second intercepting section.

9. The engine according to any one of claims 1 to 4, characterized in that, Both the intake manifold and the exhaust manifold are provided in two parts, and the intake manifold and the exhaust manifold are located on different sides of the cylinder head.

10. A vehicle, characterized in that, Includes the engine as described in any one of claims 1 to 9.

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