Cylinder cover assembly, horizontally opposed engine, hybrid power assembly and vehicle

Abstract

The embodiment of the invention provides a cylinder cover assembly, a horizontally-opposed engine, a hybrid power assembly and a vehicle, the cylinder cover assembly comprises a body, an air flow channel and a cooling liquid channel are arranged in the body, and the body comprises a lower side and an upper side which are arranged in a deviating mode in the vertical direction; the airflow channel comprises an air inlet and an air outlet, the air inlet is formed in the lower side, and the air outlet is formed in the upper side; the cooling liquid channel surrounds at least part of the airflow channel and comprises a water inlet and a water outlet, the water inlet is formed in the lower side, and the water outlet is formed in the upper side. The air inlet of the airflow channel and the water inlet of the cooling liquid channel are formed in the lower side, and the exhaust port of the airflow channel and the water outlet of the cooling liquid channel are formed in the upper side, so that the influence of bubbles on cooling liquid flowing can be reduced, accumulation of the bubbles can be avoided, and the cooling effect of the cylinder cover assembly can be improved.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202311760055.8 and the patent title "Engine and Vehicle Therewith", which was filed with the Chinese Patent Office on December 19, 2023. Technical Field

[0002] This application belongs to the technical field of vehicles, and particularly relates to a cylinder head assembly, a horizontally opposed engine, a hybrid assembly, and a vehicle. Background Art

[0003] As a core component of an engine, the main function of the cylinder head is to enclose the cylinder and form a combustion chamber with the cylinder. It is often in contact with high-temperature gases, so it will bear a large thermal load.

[0004] In related technologies, a coolant passage is usually provided in the cylinder head assembly. By introducing coolant into the coolant passage, the cooling of the cylinder head assembly can be achieved. However, since the coolant may generate bubbles and accumulate in the coolant passage under high-temperature conditions, the cooling effect of the cylinder head assembly is affected. Summary of the Invention

[0005] This application aims to provide a cylinder head assembly, a horizontally opposed engine, a hybrid assembly, and a vehicle to solve the problem that bubbles are likely to generate and accumulate in the coolant passage of the existing cylinder head assembly, affecting the cooling effect of the cylinder head assembly.

[0006] To solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, this application discloses a cylinder head assembly applied to a horizontally opposed engine. The cylinder head assembly includes: a body, in which an air flow passage and a coolant passage are provided;

[0008] The body includes a lower side and an upper side that are disposed away from each other in the vertical direction;

[0009] The air flow passage includes an air inlet and an air outlet. The air inlet is provided on the lower side, and the air outlet is provided on the upper side;

[0010] The coolant passage surrounds at least a part of the air flow passage. The coolant passage includes a water inlet and a water outlet. The water inlet is provided on the lower side, and the water outlet is provided on the upper side.

[0011] Optionally, the horizontally opposed engine includes a plurality of cylinders. At corresponding positions of each cylinder, the body is sequentially provided with an intake valve seat hole, a mounting seat hole, and an exhaust valve seat hole that communicate with the air flow passage from the lower side to the upper side;

[0012] The coolant passage includes an intake valve cooling section, a combustion chamber cooling section, and an exhaust valve cooling section that are sequentially distributed from the lower side to the upper side. The intake valve cooling section is communicated with the water inlet, and the exhaust valve cooling section is communicated with the water outlet;

[0013] Wherein, the intake valve cooling section is used to cool the area around the intake valve seat hole, the combustion chamber cooling section is used to cool the area around the mounting seat hole, and the exhaust valve cooling section is used to cool the area around the exhaust valve seat hole.

[0014] Optionally, the body includes a first side and a second side that are arranged to face away from each other in a direction perpendicular to the vertical direction, and the first side is close to the cylinder;

[0015] The combustion chamber cooling section includes a first diving portion that extends from the second side towards the first side to change the flow direction and / or flow rate of the coolant.

[0016] Optionally, there are two intake valve seat holes, and the two intake valve seat holes are arranged at intervals;

[0017] The intake valve cooling section includes a first channel, a second channel, and a third channel that are communicated with the water inlet. The second channel is located between the two intake valve seat holes, and the first channel and the third channel are respectively located on the sides of the two intake valve seat holes facing away from each other.

[0018] Optionally, the flow rates of the first channel, the second channel, and the third channel are Q1, Q2, and Q3 respectively, and satisfy: Q2 = 0.8 - 1.3(Q1 + Q3).

[0019] Optionally, there are two exhaust valve seat holes, and the two exhaust valve seat holes are arranged at intervals;

[0020] The exhaust valve cooling section includes a fourth channel, a fifth channel, and a sixth channel that are communicated with the water outlet. The fifth channel is located between the two exhaust valve seat holes, and the fourth channel and the sixth channel are respectively located on the sides of the two exhaust valve seat holes facing away from each other.

[0021] Optionally, the flow rates of the fourth channel, the fifth channel, and the sixth channel are Q4, Q5, and Q6 respectively, and satisfy: Q5 = 0.8 - 1.3(Q4 + Q6).

[0022] Optionally, the body includes a first side and a second side that are arranged to face away from each other in a direction perpendicular to the vertical direction, and the first side is close to the cylinder;

[0023] At least one of the fourth channel, the fifth channel, and the sixth channel includes a second diving portion that extends from the second side toward the first side to change the flow direction and / or flow rate of the coolant.

[0024] Optionally, the exhaust valve cooling section has a first side wall near the first side, and the first side wall is provided with a convex structure;

[0025] The convex structure is located downstream of the second diving portion and protrudes in the direction toward the second side, and the convex structure is used to change the flow direction and / or flow rate of the coolant.

[0026] Optionally, the body has a first direction that is perpendicular to the vertical direction;

[0027] The coolant channel includes a first coolant channel and a second coolant channel, and the first coolant channel and the second coolant channel are respectively arranged on both sides of the air flow channel along the first direction and are in communication with each other.

[0028] Optionally, the air flow channel includes an intake section and an exhaust section that are sequentially distributed in the vertical direction, and the intake section is close to the lower side;

[0029] The first coolant channel is arranged to surround at least part of the intake section and the exhaust section, and the second coolant channel is arranged to surround at least part of the exhaust section.

[0030] Optionally, the body further includes: a water inlet communication hole and a water return communication hole;

[0031] The water inlet communication hole and the water return communication hole are arranged between the first coolant channel and the second coolant channel to communicate the first coolant channel and the second coolant channel;

[0032] Wherein, the water inlet communication hole is arranged close to the lower side, and the water return communication hole is arranged close to the upper side.

[0033] Optionally, the second coolant channel has an upper side area in the vertical direction, and the water return communication hole is arranged in the upper side area.

[0034] Optionally, in the case where the body corresponds to two cylinders, the body is provided with two mounting seat holes, and the two mounting seat holes are arranged at intervals along the arrangement direction of the two cylinders;

[0035] There are three water inlet communication holes, and the three water inlet communication holes are arranged at intervals along the arrangement direction of the two cylinders, and one water inlet communication hole is adjacent to at least one mounting seat hole;

[0036] There are four of the return water connecting holes, and the four return water connecting holes are arranged at intervals along the arrangement direction of the two cylinders, and the four return water connecting holes are symmetrically distributed in the arrangement direction of the two cylinders.

[0037] Optionally, there are two of the coolant channels, and the two coolant channels are arranged adjacent to each other along the arrangement direction of the two cylinders;

[0038] There are two of the water inlets, and the two water inlets are arranged at intervals along the arrangement direction of the two cylinders and one water inlet corresponds to one coolant channel;

[0039] There is one of the water outlets, and the water outlet is arranged between the two coolant channels and corresponds to the two coolant channels.

[0040] In a second aspect, the present application also discloses a horizontally opposed engine, including the cylinder head assembly according to any one of the above.

[0041] In a third aspect, the present application also discloses a hybrid power assembly, including: a motor and the above-mentioned horizontally opposed engine, and the horizontally opposed engine is arranged above the motor.

[0042] In a fourth aspect, the present application also discloses a vehicle, including the above-mentioned hybrid power assembly.

[0043] In the embodiment of the present application, due to the provision of the air flow channel and the coolant channel, and the air inlet of the air flow channel and the water inlet of the coolant channel are both arranged on the lower side, and the exhaust port of the air flow channel and the water outlet of the coolant channel are both arranged on the upper side. In this way, during the use of the horizontally opposed engine, the gas enters from the air inlet located on the lower side of the body, and the high-temperature gas generated after combustion is discharged from the exhaust port located on the upper side of the body. At the same time, the coolant enters from the water inlet located on the lower side of the body, and after exchanging heat with the air flow channel and the body, etc., it flows out from the water outlet located on the upper side of the body, thereby realizing the cooling of the cylinder head assembly. During this process, on the one hand, since the air flow channel near the air inlet has a lower temperature and the air flow channel near the exhaust port has a higher temperature, that is, most of the bubbles are generated in the coolant channel located in the upper part of the body, the influence of the bubble movement on the coolant flow can be reduced, which is beneficial to improving the cooling effect; on the other hand, since the movement direction of the bubbles and the flow direction of the coolant are both upward, the bubbles can be discharged from the water outlet located on the upper side of the body along with the coolant, so that the accumulation of bubbles in the coolant channel can be effectively avoided, which is beneficial to further improving the cooling effect.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0046] Figure 1 is one of the schematic structural diagrams of a cylinder head assembly provided by an embodiment of the present application;

[0047] Figure 2 is another schematic structural diagram of a cylinder head assembly provided by an embodiment of the present application;

[0048] Figure 3 is the schematic structural diagram of the air flow channel and the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0049] Figure 4 is one of the schematic structural diagrams of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0050] Figure 5 is another schematic structural diagram of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0051] Figure 6 is the third schematic structural diagram of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0052] Figure 7 is the fourth schematic structural diagram of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0053] Figure 8 is the fifth schematic structural diagram of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0054] Figure 9 is the schematic structural diagram of the first coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0055] Figure 10 is the schematic structural diagram of the second coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0056] Figure 11 is one of the cross-sectional views of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0057] Figure 12 is another cross-sectional view of the coolant channel of a cylinder head assembly provided by an embodiment of the present application;

[0058] Figure 13 is the third cross-sectional view of the coolant channel of a cylinder head assembly provided by an embodiment of the present application.

[0059] Reference numerals: 100. Body, 1. Intake valve seat hole, 2. Mounting seat hole, 3. Exhaust valve seat hole, 4. Coolant passage, 41. Water inlet, 42. Water outlet, 43. Intake valve cooling section, 431. First passage, 432. Second passage, 433. Third passage, 44. Combustion chamber cooling section, 441. First diving part, 45. Exhaust valve cooling section, 451. Fourth passage, 452. Fifth passage, 453. Sixth passage, 454. Second diving part, 455. Protrusion structure, 46. First coolant passage, 47. Second coolant passage, 471. Seventh passage, 472. Eighth passage, 48. Water inlet communication hole, 49. Water return communication hole, 410. Throttle rib, 5. Air flow passage, 51. Air inlet, 52. Exhaust port, S1. Undesired flow direction, S2. Desired flow direction, A. Upper side, B. Lower side, C. First side, D. Second side, X. Vertical direction, Y. First direction. Detailed implementation manners

[0060] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0061] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0063] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] The embodiment of the present application provides a cylinder head assembly. The cylinder head assembly of the present application will be described in detail below with reference to the accompanying drawings.

[0065] Refer to Figures 1 to 2 , which shows a schematic structural diagram of a cylinder head assembly provided by an embodiment of the present application. Refer to Figure 3 , which shows a schematic structural diagram of the air flow passage and the coolant passage of a cylinder head assembly provided by an embodiment of the present application. Refer to Figures 4 to 8 , which shows a schematic structural diagram of the coolant passage of a cylinder head assembly provided by an embodiment of the present application. Refer to Figures 9 to 10 , which respectively show schematic structural diagrams of the first coolant passage and the second coolant passage of a cylinder head assembly provided by an embodiment of the present application; Refer to Figures 11 to 13 , which shows a cross-sectional view of the coolant passage of a cylinder head assembly provided by an embodiment of the present application. For the convenience of understanding, Figure 11 the intake valve cooling section 43, the combustion chamber cooling section 44, and the exhaust valve cooling section 45 are schematically separated by dashed lines.

[0066] As Figures 1 to 3 shown, the present application provides a cylinder head assembly, which is applied to a horizontally opposed engine. The cylinder head assembly includes: a body 100, in which an air flow passage 5 and a coolant passage 4 are provided; the body 100 includes two sides facing away from each other in the vertical direction X. In the present application, taking Figure 1 and Figure 3 the lower side B and the upper side A shown as the two sides facing away from each other in the vertical direction X as an example for illustration; the air flow passage 5 includes an air inlet 51 and an air outlet 52, the air inlet 51 is provided on the lower side B, and the air outlet 52 is provided on the upper side A; the coolant passage 4 surrounds at least part of the air flow passage 5, the coolant passage 4 includes a water inlet 41 and a water outlet 42, the water inlet 41 is provided on the lower side B, and the water outlet 42 is provided on the upper side A.

[0067] In the embodiment of the present application, since the air flow channel 5 and the coolant channel 4 are provided, and the air inlet 51 of the air flow channel 5 and the water inlet 41 of the coolant channel 4 are both arranged on the lower side B, and the air outlet 52 of the air flow channel 5 and the water outlet 42 of the coolant channel 4 are both arranged on the upper side A. In this way, during the use of the horizontally opposed engine, the gas enters from the air inlet 51 located on the lower side B of the body 100, and the high-temperature gas generated after combustion is discharged from the air outlet 52 located on the upper side A of the body 100. At the same time, the coolant enters from the water inlet 41 located on the lower side B of the body 100 and flows out from the water outlet 42 located on the upper side A of the body 100 after heat exchange with the air flow channel 5 and the body 100, etc., so as to realize the cooling of the cylinder head assembly. During this process, on the one hand, since the temperature of the air flow channel 5 near the air inlet 51 is relatively low and the temperature of the air flow channel 5 near the air outlet 52 is relatively high, that is, most of the bubbles are generated in the coolant channel 4 located in the upper part of the body 100, and the coolant enters from the water inlet 41 located on the lower side B of the body 100 and flows out from the water outlet 42 located on the upper side A of the body 100, which can reduce the influence of the bubble movement on the coolant flow and is beneficial to improving the cooling effect; on the other hand, since the movement direction of the bubbles and the flow direction of the coolant are both upward, the bubbles can be discharged from the water outlet 42 located on the upper side A of the body 100 along with the coolant, so as to effectively avoid the accumulation of bubbles in the coolant channel 4 and is beneficial to further improving the cooling effect.

[0068] It should be noted that the air flow channel 5 and the coolant channel 4 are cavities formed on the body 100. That is to say, the body 100 is a solid structure, and the air flow channel 5 and the coolant channel 4 are virtual structures. In order to intuitively show the structure of the coolant channel 4 in the embodiment of the present application, the coolant channel 4 is presented in the drawings in a solid form, and the arrow direction in the figure is the flow direction of the coolant. In addition, the upper side A of the embodiment of the present application refers to the upper part of the body 100, and the lower side B refers to the lower part of the body 100. It should be noted that in the embodiment of the present application, "upper side A" and "lower side B" can also be represented by other terms. For example, the third side is used to refer to the upper part of the body 100, and the fourth side is used to refer to the lower part of the body 100, which are all within the protection scope of the present application. In one of the embodiments, the body 100 includes a top wall, a bottom wall arranged at intervals in the vertical direction X, and a side wall located between the top wall and the bottom wall. The air inlet 51 is opened on the bottom wall, the air outlet 52 is opened on the top wall, the water inlet 41 is opened at a position on the side wall close to the bottom wall, and the water outlet 42 is opened at a position on the side wall close to the top wall. In addition, the drawings of the embodiment of the present application only schematically show the cylinder head assembly applicable to two cylinders, and in actual applications, the cylinder head assembly of the embodiment of the present application can also be applied to a single cylinder or three or more cylinders, which is not limited here.

[0069] It should be noted that the number and positions of the water inlet 41 and the water outlet 42 in the embodiments of the present application are not limited, and those skilled in the art can adjust them according to actual needs. In one embodiment, as Figures 4 to 5 shown, taking the cylinder head assembly applicable to two cylinders as an example, the body 100 is provided with a coolant channel 4 at a position corresponding to each cylinder. Specifically, there are two coolant channels 4, and the two coolant channels 4 are arranged adjacent to each other along the arrangement direction of the two cylinders; there are two water inlets 41, and the two water inlets 41 are arranged at intervals along the arrangement direction of the two cylinders and one water inlet 41 corresponds to one coolant channel 4; there is one water outlet 42, and the water outlet 42 is arranged between the two coolant channels 4 and corresponds to the two coolant channels 4. That is, each of the two coolant channels 4 is provided with a water inlet 41, and at the same time, the two coolant channels 4 share one water outlet 42. In this case, by providing two water inlets 41, the uniformity of the coolant flow in the body 100 can be improved, which is beneficial to improving the cooling uniformity of the cylinder head assembly. By sharing one water outlet 42, the number of water outlets 42 can be reduced, and the structure of the cylinder head assembly can be further simplified without affecting the coolant circulation.

[0070] In some alternative embodiments of the present application, as Figures 4 to 13 shown, the horizontally opposed engine includes a plurality of cylinders. The body 100 is sequentially provided with an intake valve seat hole 1, a mounting seat hole 2, and an exhaust valve seat hole 3 communicating with the air flow channel 5 from the lower side B to the upper side A at positions corresponding to each cylinder; the coolant channel 4 includes an intake valve cooling section 43, a combustion chamber cooling section 44, and an exhaust valve cooling section 45 sequentially distributed from the lower side B to the upper side A. The intake valve cooling section 43 communicates with the water inlet 41, and the exhaust valve cooling section 45 communicates with the water outlet 42; wherein, the intake valve cooling section 43 is used to cool the area around the intake valve seat hole 1, the combustion chamber cooling section 44 is used to cool the area around the mounting seat hole 2, and the exhaust valve cooling section 45 is used to cool the area around the exhaust valve seat hole 3. That is, the intake valve seat hole 1, the mounting seat hole 2, and the exhaust valve seat hole 3 are all within the cooling range of the coolant channel 4, and the coolant channel 4 can sequentially cool the areas around the intake valve seat hole 1, the mounting seat hole 2, and the exhaust valve seat hole 3, which is beneficial to improving the overall cooling effect of the cylinder head assembly.

[0071] It should be noted that the intake valve seat hole 1 is used to install the intake valve, the exhaust valve seat hole 3 is used to install the exhaust valve, and the mounting seat hole 2 is used to install the spark plug and / or the injector. Among them, when the mounting seat hole 2 installs both the spark plug and the injector at the same time, the cylinder head assembly is applicable to the direct injection gasoline engine in the cylinder.

[0072] In some alternative embodiments of the present application, as Figure 12As shown, the body 100 includes a first side C and a second side D that are disposed away from each other perpendicular to the vertical direction X. The first side C is close to the cylinder, and the second side D is close to the cylinder head cover. The first side C and the cylinder enclose a combustion chamber, and the second side D and the cylinder head cover enclose an installation chamber for installing the camshaft. The combustion chamber cooling section 44 includes a first diving portion 441 that extends from the second side D toward the first side C to change the flow direction and / or flow rate of the coolant.

[0073] In practical applications, when the cylinder head assembly and the cylinder are assembled, a combustion chamber is formed between the cylinder head assembly and the cylinder, and the combustion chamber roughly corresponds to the combustion chamber cooling area of the coolant passage 4. Based on this, when the first diving portion 441 is provided in the combustion chamber cooling section 44 and the first diving portion 441 extends from the second side D (i.e., the side away from the combustion chamber) toward the first side C (i.e., the side close to the combustion chamber), the coolant can dive toward the direction close to the combustion chamber wall surface, increasing the flow rate of the coolant in the combustion chamber cooling section 44, which is beneficial to improving the cooling effect of the combustion chamber wall surface, that is, the corresponding part of the body 100 and the combustion chamber.

[0074] In this embodiment, the flow rate of the coolant can be decomposed into flow rates in two directions. One direction is the flow rate in the vertical direction, that is, Figure 12 the flow rate flowing from the lower side B to the upper side A as shown, that is, the flow rate in the X direction, hereinafter referred to as the first split flow rate; the other direction is the flow rate in the direction between the first side C and the second side D, that is, Figure 12 the flow rate in the Y direction as shown, hereinafter referred to as the second split flow rate. The diving in this embodiment means that when the coolant enters the first diving portion 441, among the flow rates of the coolant in the two directions, the second split flow rate increases while the first split flow rate decreases, so that the coolant dives from the second side to the first side, improving the cooling effect of the corresponding part of the body 100 and the combustion chamber.

[0075] It should be noted that assuming that the flow direction of the coolant in the first diving portion 441 is the first flow direction, and the flow direction of the coolant in the channel upstream of the first diving portion 441 is the second flow direction, the included angle range between the second flow direction and the first flow direction can be 90° to 150°, that is, the flow direction of the coolant changes by 90° to 150°, and the flow rate is increased, so that the combustion chamber wall surface can be sufficiently cooled.

[0076] In practical applications, when the cylinder head assembly and the cylinder are assembled, since the cylinder head assembly often contacts high-temperature and high-pressure gas, it bears a large thermal load. Among them, the area where the heat and cold exchange is the most intense, that is, the area with a higher thermal load, is the nose area. The nose area refers to the area between the two intake valve seats 1 and between the two exhaust valve seats 3.

[0077] In some alternative embodiments of the present application, such as Figure 11As shown, two intake valve seat holes 1 are provided, and the two intake valve seat holes 1 are arranged at an interval; the intake valve cooling section 43 includes a first channel 431, a second channel 432 and a third channel 433 connected to the water inlet 41, the second channel 432 is located between the two intake valve seat holes 1, and the first channel 431 and the third channel 433 are respectively located on the sides of the two intake valve seat holes 1 that are away from each other.

[0078] In the embodiment of the present application, by providing the first channel 431, the second channel 432 and the third channel 433, the areas around the two intake valve seat holes 1 can be fully cooled, which is beneficial to improving the cooling uniformity of the cylinder head assembly.

[0079] In some optional embodiments of the present application, the flow rates of the first channel 431 , the second channel 432 , and the third channel 433 are Q1 , Q2 , and Q3 , respectively, satisfying: Q2 = 0.8-1.3 (Q1 + Q3).

[0080] In the embodiment of the present application, since the flow rate of the second channel 432 located in the middle is 0.8 to 1.3 times the sum of the flow rates of the first channel 431 and the third channel 433 located on both sides, that is, the flow rate through the nose bridge area (i.e., the nose bridge area between the two intake valve seat holes 1) is relatively large, the coolant can fully exchange heat with the nose bridge area, thereby effectively reducing the temperature of the nose bridge area, which is beneficial to improving the cooling effect of the cylinder head assembly as a whole. It should be noted that the flow rate of the channel will be affected by multiple factors at the same time, such as the cross-sectional area of ​​the channel, the position distribution of the inlet and outlet, etc.

[0081] Taking the cross-sectional area of ​​a channel as an example, as the cross-sectional area increases, the flow rate of the channel increases. Based on this, in practical applications, the flow rates of the first channel 431, the second channel 432, and the third channel 433 can be adjusted by adjusting the cross-sectional areas of the first channel 431, the second channel 432, and the third channel 433.

[0082] Taking the position distribution of the water inlet and outlet as an example, the smaller the distance between the water inlet 41 and the flow channel, the easier it is for the coolant to flow into the flow channel, so that the flow rate of the flow channel is larger. Similarly, the smaller the distance between the water outlet 42 and the flow channel, the easier it is for the coolant to flow out of the flow channel to the water outlet 42, so that the flow rate of the flow channel is larger. The influence of the position distribution of the water inlet and outlet 42 on the flow rate of the flow channel can also be understood based on the flow resistance. The larger the distance between the water inlet 41 and the flow channel, the larger the distance between the water outlet 42 and the flow channel, the longer the flow path of the coolant from the water inlet 41 through the flow channel to the water outlet 42, the larger the overall flow resistance, and thus the smaller the flow rate. Based on this, in actual applications, the flow rates of the three can also be regulated by adjusting the position distribution of the water inlet and outlet.

[0083] In some optional embodiments of the present application, such as Figure 11As shown, there are two exhaust valve seat holes 3, and the two exhaust valve seat holes 3 are arranged at intervals; the exhaust valve cooling section 45 includes a fourth channel 451, a fifth channel 452 and a sixth channel 453 that communicate with the water outlet 42. The fifth channel 452 is located between the two exhaust valve seat holes 3, and the fourth channel 451 and the sixth channel 453 are respectively located on the sides of the two exhaust valve seat holes 3 facing away from each other.

[0084] In the embodiment of the present application, by providing the fourth channel 451, the fifth channel 452 and the sixth channel 453, the areas around the two exhaust valve seat holes 3 can be fully cooled, which is beneficial to improving the cooling uniformity of the cylinder head assembly.

[0085] In some alternative embodiments of the present application, the flow rates of the fourth channel 451, the fifth channel 452 and the sixth channel 453 are Q4, Q5 and Q6 respectively, satisfying: Q5 = 0.8 - 1.3(Q4 + Q6).

[0086] In the embodiment of the present application, since the flow rate of the middle fifth channel 452 is 0.8 - 1.3 times the sum of the flow rates of the fourth channel 451 and the sixth channel 453 on both sides, that is, the flow rate through the bridge area (i.e., the bridge area between the two exhaust valve seat holes 3) is large, the coolant can fully exchange heat with the bridge area, thereby effectively reducing the temperature of the bridge area, which is beneficial to improving the overall cooling effect of the cylinder head assembly. It should be noted that the size of the flow rate of the channel is affected by multiple factors at the same time, such as the cross-sectional area of the channel, the position distribution of the inlet and outlet water ports, etc. Taking the cross-sectional area of the channel as an example, as the cross-sectional area increases, the flow rate of the channel increases. Based on this, in practical applications, the flow rates of the three can be adjusted by adjusting the cross-sectional area sizes of the fourth channel 451, the fifth channel 452 and the sixth channel 453. Taking the position distribution of the inlet and outlet water ports as an example, the smaller the distance between the inlet water port 41 and the flow channel, the easier it is for the coolant to flow into the flow channel, so the flow rate of this flow channel is larger. Similarly, the smaller the distance between the outlet water port 42 and the flow channel, the easier it is for the coolant to flow out of the flow channel to the outlet water port 42, so the flow rate of this flow channel is larger; the influence of the position distribution of the inlet and outlet water ports 42 on the flow rate of the flow channel can also be understood based on the flow resistance. The larger the distance between the inlet water port 41 and the flow channel, and the larger the distance between the outlet water port 42 and the flow channel, the longer the flow path of the coolant flowing from the inlet water port 41 through the flow channel to the outlet water port 42, and the greater the overall flow resistance, so the flow rate is smaller. Based on this, in practical applications, the flow rates of the three can also be adjusted by adjusting the position distribution of the inlet and outlet water ports.

[0087] In practical applications, such as Figure 11As shown, a throttle rib 410 is further provided in the coolant passage 4 of the embodiment of the present application. The throttle rib 410 is used to change the flow direction and / or flow rate of the coolant. Specifically, the throttle rib 410 may be a convex portion formed on the inner wall of the coolant passage 4. On the one hand, the convex portion can reduce the cross-sectional area of the corresponding passage, thereby reducing the flow rate of the coolant passing through. On the other hand, the flow rate of the coolant can be changed by the setting position or shape of the convex portion, guiding the coolant to flow in the desired direction. The embodiment of the present application does not limit the setting position of the throttle rib 410, and those skilled in the art can adjust it according to actual needs.

[0088] In some alternative embodiments of the present application, as Figure 9 and Figure 13 shown, the body 100 includes a first side C and a second side D disposed away from each other along a direction perpendicular to the vertical direction X. The first side C is close to the cylinder, and the second side D is close to the cylinder head cover. The first side C and the cylinder enclose a combustion chamber, and the second side D and the cylinder head cover enclose an installation chamber for installing the camshaft; at least one of the fourth passage 451, the fifth passage 452, and the sixth passage 453 includes a second diving portion 454. The second diving portion 454 extends from the second side D towards the first side C to change the flow direction and / or flow velocity of the coolant.

[0089] In practical applications, since the cylinder head assembly intakes air from the lower side B and exhausts air from the upper side A, that is, the upper part of the body 100 has a higher temperature. Taking the fifth passage 452 as an example, the fifth passage 452 corresponds to the bridge region between the two exhaust valve seats 3. The bridge region has a first wall close to the cylinder, and the first wall is in direct contact with the high-temperature gas and has a higher temperature. By providing the second diving portion 454 in the fifth passage 452 located in the upper part of the body 100, and when the second diving portion 454 extends from the second side D (i.e., the side away from the first wall) towards the first side C (i.e., the side close to the first wall), the coolant can dive towards the direction close to the first wall, increasing the flow velocity of the coolant in the bridge region and being beneficial to improving the cooling effect of the bridge region. Similarly, by providing the second diving portion 454 in the fourth passage 451 and / or the sixth passage 453, the flow velocity of the coolant can be increased, thereby improving the cooling effect on the side where the two exhaust valve seats 3 face away from each other.

[0090] In this embodiment, the flow velocity of the coolant can be decomposed into flow velocities in two directions. One direction is the flow velocity in the vertical direction, that is, Figure 13 the flow velocity flowing from the lower side B to the upper side A as shown, that is, the flow velocity in the X direction, hereinafter referred to as the third split flow velocity; the other direction is the flow velocity in the direction between the first side C and the second side D, that is, Figure 13The flow velocity in the Y direction shown below is hereinafter referred to as the fourth split flow velocity. The dive in this embodiment means that when the coolant enters the second dive portion 454, among the flow velocities of the coolant in two directions, the fourth split flow velocity increases while the third split flow velocity decreases, whereby the coolant dives from the second side to the first side, improving the cooling effect of the corresponding part of the body 100 and the combustion chamber.

[0091] It should be noted that those skilled in the art can set the second dive portion 454 in at least one of the fourth channel 451, the fifth channel 452, and the sixth channel 453 according to actual needs, which is not limited herein. In one embodiment, since the temperature of the bridge region between the two exhaust valve seat holes 3 is relatively high and the coolant flow rate passing through the bridge region is relatively large, therefore, the second dive portion 454 can be provided only in the fifth channel 452, thereby improving the cooling effect of the cylinder head assembly while reducing the processing difficulty of the cylinder head assembly. In addition, assuming that the flow direction of the coolant in the second dive portion 454 is the third flow direction and the flow direction of the coolant in the channel upstream of the second dive portion 454 is the fourth flow direction, the included angle range between the fourth flow direction and the third flow direction can be 90° to 150°, that is, the flow direction of the coolant changes by 90° to 150°, and the flow velocity is increased, so that the combustion chamber wall surface can be sufficiently cooled.

[0092] In some alternative embodiments of the present application, as Figure 13 shown, the exhaust valve cooling section 45 has a first side wall close to the first side C, and the first side wall is provided with a convex structure 455; the convex structure 455 is located downstream of the second dive portion 454 and protrudes in the direction of the second side D, and the convex structure 455 is used to change the flow direction and / or flow velocity of the coolant.

[0093] In practical applications, since the size of the exhaust valve cooling section 45 along the first direction Y, that is, the horizontal direction, is relatively large, in this way, the coolant will flow out along an undesired flow direction S1. During this process, it is difficult for the coolant to contact the air flow channel 5, resulting in a poor cooling effect of the air flow channel 5. Based on this, by providing the convex structure 455 downstream of the second dive portion 454 and the convex structure 455 protruding toward the second side D (i.e., the side close to the air flow channel 5), the flow direction of the coolant can be changed, so that the coolant flows out along the desired flow direction S2. During this process, the coolant can exchange heat with the air flow channel 5 sufficiently, which is beneficial to improving the cooling effect of the air flow channel 5.

[0094] In practical applications, as Figure 12As shown, since the cross-sectional areas of the fourth channel 451 and the sixth channel 453 are relatively small, and their cross-sectional dimensions are less than or equal to 8 mm × 10 mm. In this case, since the coolant in the fourth channel 451 and the sixth channel 453 can be in full contact with the air flow channel 5, the convex structure 455 may not be provided. It should be noted that the convex structure 455 in the embodiments of the present application may be a convex hull with a streamline shape, which can reduce the flow resistance while realizing the change of the coolant flow direction.

[0095] In some alternative embodiments of the present application, as Figures 8 to 10 shown, the body 100 has a first direction Y, and the first direction Y is perpendicular to the vertical direction X; the coolant channel 4 includes a first coolant channel 46 and a second coolant channel 47, and the first coolant channel 46 and the second coolant channel 47 are respectively arranged on both sides of the air flow channel 5 along the first direction Y and are communicated with each other.

[0096] In the embodiments of the present application, by providing the first coolant channel 46 and the second coolant channel 47, and the first coolant channel 46 and the second coolant channel 47 are respectively arranged on both sides of the air flow channel 5 along the first direction Y. In this way, the area around the air flow channel 5 can be fully cooled, which is beneficial to improving the cooling uniformity and cooling effect of the cylinder head assembly. It should be noted that the first direction Y in the embodiments of the present application refers to the horizontal direction, that is, the thickness direction of the body 100.

[0097] In some alternative embodiments of the present application, as Figure 3 shown, the air flow channel 5 includes an intake section and an exhaust section that are sequentially distributed along the vertical direction X, and the intake section is close to the lower side B; the first coolant channel 46 surrounds at least part of the intake section and the exhaust section, and the second coolant channel 47 surrounds at least part of the exhaust section. That is, in a plane perpendicular to the first direction Y along the first direction Y, the projection of the first coolant channel 46 covers at least part of the intake section and the exhaust section, and the projection of the second coolant channel 47 covers at least part of the exhaust section.

[0098] In practical applications, since the temperature of the intake section is lower than that of the exhaust section, that is, the cooling requirement of the exhaust section is higher. Based on this, when the first coolant channel 46 surrounds at least part of the intake section and the exhaust section, and the second coolant channel 47 surrounds at least part of the exhaust section, that is, the relatively low-temperature intake section is only cooled by the first coolant channel 46, and the relatively high-temperature exhaust section is cooled by the first coolant channel 46 and the second coolant channel 47 at the same time. By reasonably setting the first coolant channel 46 and the second coolant channel 47 in this way, while simplifying the structure of the body 100, the effective cooling of the intake section and the exhaust section can be realized, which is beneficial to improving the cooling uniformity and cooling effect of the cylinder head assembly.

[0099] It should be noted that the air flow channel 5 includes an intake section and an exhaust section. One end of the intake section is connected to the air inlet 51, and the other end is connected to the combustion chamber. One end of the exhaust section is connected to the exhaust port 52, and the other end is connected to the combustion chamber.

[0100] In some alternative embodiments of the present application, as Figure 7 and Figure 11 shown, the body 100 further includes: a water inlet communication hole 48 and a water return communication hole 49; the water inlet communication hole 48 and the water return communication hole 49 are arranged between the first coolant channel 46 and the second coolant channel 47 to connect the first coolant channel 46 and the second coolant channel 47; wherein, the water inlet communication hole 48 is arranged close to the lower side B, and the water return communication hole 49 is arranged close to the upper side A.

[0101] In the embodiments of the present application, by providing the water inlet communication hole 48 and the water return communication hole 49, the flow of the coolant in the second coolant channel 47 can be realized, which is beneficial to improving the cooling performance of the second cooling channel. Since the water inlet communication hole 48 is arranged close to the lower side B and the water return communication hole 49 is arranged close to the upper side A, that is, the water flow direction of the second coolant channel 47 is from bottom to top. In this way, when bubbles are generated in the coolant in the second cooling channel due to high temperature, the bubbles can enter the first coolant channel 46 through the water return communication hole 49 along with the coolant and be discharged from the water outlet 42, thereby effectively avoiding the accumulation of bubbles in the second cooling channel and being beneficial to further improving the cooling effect.

[0102] It should be noted that the embodiments of the present application do not limit the number of the water inlet communication hole 48 and the water return communication hole 49, and those skilled in the art can adjust according to actual needs. In addition, the water inlet communication hole 48 and the water return communication hole 49 can be drilled and connected from the side of the first coolant channel 46, or can be drilled and connected from the side of the second coolant channel 47, which is not limited herein, and those skilled in the art can choose according to actual needs.

[0103] In one of the embodiments, for a single cylinder, two water inlet communication holes 48 are provided. The two water inlet communication holes 48 are arranged at both ends of the body 100 along the length direction. The water inlet communication hole 48 close to the first channel 431 can supply part of the coolant in the first channel 431 and the second channel 432 to flow into the second coolant channel 47, and the water inlet communication hole 48 close to the third channel 433 can supply part of the coolant in the third channel 433 and the second channel 432 to flow into the second coolant channel 47. By providing two water inlet communication holes 48, the uniformity of the water flow can be improved, which is beneficial to improving the cooling performance of the second coolant channel 47. As Figure 6As shown, the second coolant passage 47 includes a seventh passage 471 and an eighth passage 472. The seventh passage 471 and the eighth passage 472 are respectively located on both sides of the mounting seat hole 2 and have substantially the same flow rate. After the coolant exchanges heat with the air flow passage 5, the body 100, etc., it flows from the return water connection hole 49 to the first coolant passage 46. Among them, there are two return water connection holes 49, and the two return water connection holes 49 are arranged at both ends of the body 100 along the length direction, so that the coolant in the seventh passage 471 and the eighth passage 472 can smoothly flow to the first coolant passage 46. By providing two return water connection holes 49, the uniformity of the water flow can be improved, dead zones can be avoided, and it is beneficial to improve the cooling performance of the second coolant passage 47.

[0104] In this embodiment, the length direction of the body 100 refers to the direction perpendicular to both the X direction and the Y direction. In the case where there are multiple cylinders corresponding to the body 100, the length direction of the body 100 refers to the arrangement direction of the multiple cylinders.

[0105] It can be understood that for a horizontally opposed engine provided with multiple cylinders, the water inlet connection holes 48 and the return water connection holes 49 between two adjacent cylinders, that is, between two adjacent coolant passages 4 on the body 100, can be set separately or combined. In one embodiment, as Figure 11 shown, in the case where the body 100 corresponds to two cylinders, the body 100 is provided with two mounting seat holes 2, and the two mounting seat holes 2 are arranged at intervals along the arrangement direction of the two cylinders; there are three water inlet connection holes 48, and the three water inlet connection holes 48 are arranged at intervals along the arrangement direction of the two cylinders, and one water inlet connection hole 48 is adjacent to at least one mounting seat hole 2; there are four return water connection holes 49, and the four return water connection holes 49 are arranged at intervals along the arrangement direction of the two cylinders, and the four return water connection holes 49 are symmetrically distributed in the arrangement direction of the two cylinders. That is, the water inlet connection holes 48 between two adjacent coolant passages 4 are combined, and the return water connection holes 49 between two adjacent cylinders are set separately, which can not only improve the setting flexibility of the water inlet connection holes 48 and the return water connection holes 49, is beneficial to improving the cooling uniformity of the cylinder head assembly, but also can further simplify the structure of the cylinder head assembly, which is beneficial to reducing the processing difficulty of the cylinder head assembly.

[0106] In some alternative embodiments of the present application, the second coolant passage 47 has an upper region in the vertical direction X, and the return water connection hole 49 is arranged in the upper region. In this way, by arranging the return water connection hole 49 in the upper region, the bubbles generated in the second coolant passage 47 can flow to the first coolant passage 46 through the return water connection hole 49 along with the coolant and be discharged from the water outlet 42, so that the bubbles can be effectively prevented from accumulating in the second coolant passage 47, which is beneficial to improving the cooling performance of the second coolant passage 47.

[0107] It should be noted that the upper region in the embodiment of the present application refers to the region with the highest position in the second cooling channel after the cylinder head assembly is assembled. By arranging the return water communication hole 49 close to the upper region, in this way, even if the cylinder head assembly tilts during use, there will be no air accumulation.

[0108] In summary, the cylinder head assembly provided by the embodiment of the present application has at least the following advantages:

[0109] Since an air flow channel and a coolant channel are provided, and the air inlet of the air flow channel and the water inlet of the coolant channel are both arranged on the lower side, and the exhaust port of the air flow channel and the water outlet of the coolant channel are both arranged on the upper side. In this way, during the use of the horizontally opposed engine, the gas enters from the air inlet located on the lower side of the body, and the high-temperature gas generated after combustion is discharged from the exhaust port located on the upper side of the body. At the same time, the coolant enters from the water inlet located on the lower side of the body, and after exchanging heat with the air flow channel and the body, etc., it flows out from the water outlet located on the upper side of the body, so as to realize the cooling of the cylinder head assembly. During this process, on the one hand, since the temperature of the air flow channel near the air inlet is lower and the temperature of the air flow channel near the exhaust port is higher, that is, most of the bubbles are generated in the coolant channel located in the upper part of the body, the influence of the bubble movement on the coolant flow can be reduced, which is beneficial to improving the cooling effect; on the other hand, since the movement direction of the bubbles and the flow direction of the coolant are both upward, the bubbles can be discharged from the water outlet located on the upper side of the body along with the coolant, so that the accumulation of bubbles in the coolant channel can be effectively avoided, which is beneficial to further improving the cooling effect.

[0110] The embodiment of the present application also provides a horizontally opposed engine, including the cylinder head assembly according to any one of the above embodiments.

[0111] It should be noted that in the embodiment of the present application, the structure of the cylinder head assembly is the same as that of the cylinder head assembly described in any one of the above embodiments, and its beneficial effects are also similar, and will not be elaborated here.

[0112] The embodiment of the present application also provides a hybrid power assembly, including: a motor and the above-mentioned horizontally opposed engine, and the horizontally opposed engine is arranged above the motor. In this way, since the cylinder head assembly of the horizontally opposed engine intakes air from the lower side B and exhausts air from the upper side A, that is, the exhaust is away from the motor, the influence of exhaust heat radiation on the motor can be avoided, which is beneficial to improving the working reliability of the hybrid power assembly.

[0113] It should be noted that in the embodiment of the present application, the structure of the horizontally opposed engine is the same as that of the horizontally opposed engine described in any one of the above embodiments, and its beneficial effects are also similar, and will not be elaborated here.

[0114] The embodiment of the present application further provides a vehicle, including the above-mentioned hybrid powertrain.

[0115] It should be noted that in the embodiment of the present application, the structure of the hybrid powertrain is the same as that of the hybrid powertrain described in any of the above embodiments, and its beneficial effects are also similar, which will not be elaborated here.

[0116] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0117] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cylinder head assembly, applied to a horizontally opposed engine, characterized in that: The cylinder head assembly comprises: a body, in which an air flow channel and a coolant channel are arranged; The body includes a lower side and an upper side disposed in a vertical direction away from each other; The air flow channel includes an air inlet and an air outlet, the air inlet is arranged on the lower side, and the air outlet is arranged on the upper side; The coolant channel is arranged around at least a portion of the air flow channel, and the coolant channel includes a water inlet and a water outlet, the water inlet is arranged on the lower side, and the water outlet is arranged on the upper side.

2. The cylinder head assembly according to claim 1, characterized in that: The horizontally opposed engine comprises a plurality of cylinders, and the body is provided with an intake valve seat hole, a mounting seat hole and an exhaust valve seat hole communicating with the air flow channel in sequence from the lower side to the upper side at a corresponding position of each cylinder; The coolant channel comprises an intake valve cooling section, a combustion chamber cooling section and an exhaust valve cooling section which are sequentially distributed from the lower side to the upper side, the intake valve cooling section is communicated with the water inlet, and the exhaust valve cooling section is communicated with the water outlet; The intake valve cooling section is used to cool the area around the intake valve seat hole, the combustion chamber cooling section is used to cool the area around the mounting seat hole, and the exhaust valve cooling section is used to cool the area around the exhaust valve seat hole.

3. The cylinder head assembly according to claim 2, characterized in that: The body comprises a first side and a second side disposed opposite to each other in a direction perpendicular to the vertical direction, the first side being close to the cylinder; The combustion chamber cooling section comprises a first dive portion, wherein the first dive portion extends from the second side toward the first side to change a flow direction and / or flow velocity of the coolant.

4. The cylinder head assembly according to claim 2 or 3, characterized in that: The two intake valve seat holes are provided, and the two intake valve seat holes are arranged at intervals; The intake valve cooling section includes a first channel, a second channel and a third channel connected to the water inlet, the second channel is located between the two intake valve seat holes, and the first channel and the third channel are respectively located on the sides of the two intake valve seat holes facing away from each other.

5. The cylinder head assembly according to claim 4, characterized in that: The flow rates of the first channel, the second channel and the third channel are Q1, Q2 and Q3 respectively, satisfying: Q2=0.8-1.3(Q1+Q3).

6. The cylinder head assembly according to claim 2 or 3, characterized in that: There are two exhaust valve seat holes, and the two exhaust valve seat holes are arranged at intervals; The exhaust valve cooling section includes a fourth channel, a fifth channel and a sixth channel connected to the water outlet, the fifth channel is located between the two exhaust valve seat holes, and the fourth channel and the sixth channel are respectively located on the sides of the two exhaust valve seat holes that are away from each other.

7. The cylinder head assembly according to claim 6, characterized in that: The flow rates of the fourth channel, the fifth channel and the sixth channel are Q4, Q5 and Q6 respectively, satisfying: Q5=0.8-1.3(Q4+Q6).

8. The cylinder head assembly according to claim 6, characterized in that: The body comprises a first side and a second side disposed opposite to each other in a direction perpendicular to the vertical direction, the first side being close to the cylinder; At least one of the fourth channel, the fifth channel and the sixth channel includes a second dive portion, and the second dive portion extends from the second side toward the first side to change the flow direction and / or flow rate of the coolant.

9. The cylinder head assembly according to claim 8, characterized in that: The exhaust valve cooling section has a first side wall close to the first side, and the first side wall is provided with a protruding structure; The protruding structure is located downstream of the second dive portion and protrudes toward the second side. The protruding structure is used to change the flow direction and / or flow speed of the coolant.

10. The cylinder head assembly according to claim 1, characterized in that: The body has a first direction, the first direction being perpendicular to the vertical direction; The coolant channel includes a first coolant channel and a second coolant channel. The first coolant channel and the second coolant channel are respectively arranged on both sides of the airflow channel along the first direction and are connected to each other.

11. The cylinder head assembly according to claim 10, characterized in that: The air flow channel includes an air intake section and an air exhaust section sequentially distributed along the vertical direction, and the air intake section is close to the lower side; The first coolant channel is disposed around at least a portion of the intake section and the exhaust section, and the second coolant channel is disposed around at least a portion of the exhaust section.

12. The cylinder head assembly according to claim 10 or 11, characterized in that: The body further comprises: a water inlet communicating hole and a water return communicating hole; The water inlet communicating hole and the water return communicating hole are arranged between the first coolant channel and the second coolant channel to communicate the first coolant channel with the second coolant channel; Wherein, the water inlet connecting hole is arranged close to the lower side, and the water return connecting hole is arranged close to the upper side.

13. The cylinder head assembly according to claim 12, characterized in that: The second coolant channel has an upper region in the vertical direction, and the water return communication hole is arranged in the upper region.

14. The cylinder head assembly according to claim 12, characterized in that: In the case where the body corresponds to the two cylinders, the body is provided with two mounting seat holes, and the two mounting seat holes are arranged at intervals along the arrangement direction of the two cylinders; There are three water inlet communicating holes, which are arranged at intervals along the arrangement direction of the two cylinders, and one water inlet communicating hole is arranged adjacent to at least one mounting seat hole; There are four water return communicating holes, which are arranged at intervals along the arrangement direction of the two cylinders, and are symmetrically distributed in the arrangement direction of the two cylinders.

15. The cylinder head assembly according to claim 1, characterized in that: There are two coolant channels, and the two coolant channels are adjacently arranged along the arrangement direction of the two cylinders; There are two water inlets, which are spaced apart along the arrangement direction of the two cylinders and one water inlet corresponds to one coolant channel; The water outlet is provided with one, and the water outlet is provided between the two coolant channels and corresponds to the two coolant channels.

16. A horizontally opposed engine, characterized in that: Comprising the cylinder head assembly according to any one of claims 1-15.

17. A hybrid powertrain, characterized in that: include: A motor and a horizontally opposed engine as claimed in claim 16, wherein the horizontally opposed engine is arranged above the motor.

18. A vehicle, characterized in that: Including the hybrid powertrain of claim 17 or the horizontally opposed engine of claim 16.

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