Cylinder cover, engine, hybrid assembly and vehicle

Abstract

The air cylinder cover comprises a body, a plurality of cylinder openings are formed in the body, the cylinder openings and a cylinder body are used for forming a combustion chamber in a surrounding mode, and the multiple cylinder openings are sequentially arranged in the first direction at intervals; a first connecting hole is formed in the body, and a fixing piece for connecting the body and the cylinder body passes through the first connecting hole; a second connecting hole is formed in the body, and a connecting piece for connecting the body and the cam bearing seat passes through the second connecting hole; the first connecting holes and the second connecting holes are arranged at intervals in the second direction perpendicular to the first direction. By means of the arrangement, the torque of the cylinder cover in the front-back direction (namely the extending direction of the cam shaft) can be balanced, deformation or displacement possibly caused by staggered arrangement of the cam bearing seat and the cylinder cover bolt on the cylinder cover in the front-back direction is avoided, and therefore it is guaranteed that stress on the cylinder cover in the up-down direction and the front-back direction is relatively uniform; and the structural strength and the bearing capacity of the cylinder cover are improved.

Description

Technical Field

[0001] The present invention generally relates to the technical field of engine components, and in particular to a cylinder head, an engine, a hybrid assembly and a vehicle. Background Art

[0002] The engine cylinder head is an important component of the engine. It is connected to the cylinder block through cylinder head bolts. It is used to seal the upper part of the cylinder block and together with the cylinder block form a combustion chamber. At the same time, the intake and exhaust valves and their driving mechanisms, such as camshafts, tappets, etc. are distributed on it. Some components of the engine's fuel supply system (such as fuel pumps, injectors) and ignition system (such as spark plugs) are also installed on the cylinder head. The combined effect of these mechanisms and systems enables the engine to run efficiently and stably.

[0003] The cam bearing seat is used to support the camshaft and prevent the camshaft from generating huge vibration and pressure during operation. In related technologies, the cam bearing seat is integrated on the cylinder head, and the camshaft is arranged on the cam bearing seat. The camshaft exerts an upward force on the cylinder head during operation, and the cylinder head is simultaneously subjected to a downward force from the cylinder head bolts that play a fixing role. For a multi-cylinder engine, since the length of the cylinder head in the front-to-back direction (i.e., the extension direction of the camshaft) is relatively long, improper arrangement of the cam bearing seat will cause the cylinder head to be subjected to unbalanced force in the front-to-back direction, which is prone to deformation or displacement, seriously affecting the structural strength and load-bearing capacity of the cylinder head. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the related art, it is desired to provide a cylinder head, an engine hybrid assembly and a vehicle.

[0005] In a first aspect, the present invention provides a cylinder head, which includes a main body, a plurality of cylinder ports being provided on the main body, the cylinder ports being used to form a combustion chamber together with the cylinder body, the plurality of cylinder ports being arranged in sequence and spaced apart in a first direction; a first connecting hole being provided on the main body, the first connecting hole being used for passage of a fixing member connecting the main body and the cylinder body; a second connecting hole being provided on the main body, the second connecting hole being used for passage of a connecting member connecting the main body and the cam bearing seat; the first connecting hole and the second connecting hole being spaced apart in a second direction perpendicular to the first direction.

[0006] Optionally, the main body has a first side and a second side facing away from each other, the cylinder port and the first connecting hole are both arranged on the first side; the second side is provided with a support seat for mounting the cam bearing seat, and the second connecting hole is opened on the support seat.

[0007] Optionally, each support seat is provided with two second connection holes, and the two second connection holes are spaced apart in the second direction.

[0008] Optionally, the first connecting hole passes through from the first side to the support seat on the second side, and the first connecting hole is located between the two second connecting holes.

[0009] Optionally, a receiving groove for receiving the camshaft is provided on the second side, and the support seat is provided in the receiving groove.

[0010] Optionally, the cylinder head includes a connection hole group, the connection hole group includes a first connection hole and two second connection holes, the two second connection holes are spaced apart in the second direction, and the first connection hole is located between the two second connection holes.

[0011] Optionally, there are multiple connection hole groups, and some of the connection hole groups are spaced apart in the first direction.

[0012] Optionally, a plurality of mounting portions are provided on the main body, the mounting portions being used to mount injectors and / or spark plugs extending into the cylinder ports, the plurality of mounting portions corresponding to the plurality of cylinder ports one-to-one, and the plurality of mounting portions being spaced apart in the first direction.

[0013] Optionally, the multiple mounting portions include an adjacent first mounting portion and a second mounting portion, at least one group of connection holes is located between the first mounting portion and the second mounting portion, and at least one group of connection holes is located on a side of the first mounting portion away from the second mounting portion.

[0014] Optionally, each mounting portion has a first mounting area and a second mounting area, the first mounting area is used to mount the injector, and the second mounting area is used to mount the spark plug, and the first mounting area and the second mounting area are spaced apart in the second direction.

[0015] In a second aspect, the present invention provides an engine, comprising the cylinder head according to the first aspect, a cylinder block and a fixing member, wherein the fixing member connects the main body and the cylinder block through a first connecting hole.

[0016] Optionally, the cylinder body has a plurality of cylinder holes, and the plurality of cylinder holes and the plurality of cylinder ports are arranged in a one-to-one correspondence and are surrounded to form a plurality of combustion chambers.

[0017] Optionally, it also includes a connecting piece, a camshaft and a cam bearing seat, the connecting piece connects the body and the cam bearing seat through a second connecting hole, and the camshaft is arranged on the cam bearing seat.

[0018] Optionally, the cam bearing seat is arranged directly above the fixing member.

[0019] In a third aspect, the present invention provides a hybrid assembly comprising the engine of the second aspect.

[0020] In a fourth aspect, the present invention provides a vehicle comprising the engine of the second aspect or the hybrid assembly of the third aspect.

[0021] In the cylinder head, engine and vehicle provided by the present invention, the cylinder block and the main body of the cylinder head are fixed to each other by a fixing member passing through a first connecting hole, and the cam bearing seat and the main body of the cylinder head are fixed to each other by a connecting member passing through a second connecting hole, wherein, by arranging the first connecting hole and the second connecting hole to be spaced apart in a direction perpendicular to the central axis of the camshaft, that is, to be spaced apart in a second direction perpendicular to the first direction, the torque of the cylinder head in the front-to-back direction (that is, the extension direction of the camshaft) can be balanced, and deformation or displacement caused by the misalignment of the cam bearing seat and the cylinder head bolts on the cylinder head in the front-to-back direction can be avoided, thereby ensuring that the force on the cylinder head in the up and down and front-to-back directions is relatively uniform, thereby improving the structural strength and bearing capacity of the cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 A structural diagram of a cylinder head from one perspective according to an embodiment of the present application;

[0024] Figure 2 A structural diagram of a cylinder head according to an embodiment of the present application from another perspective;

[0025] Figure 3 for Figure 1 Cylinder head cross-sectional view in Figure 1;

[0026] Figure 4 A cam bearing seat according to an embodiment of the present application;

[0027] Figure 5 This is a structural diagram of the mounting portion, injector, and spark plug of an embodiment provided in this application.

[0028] In the figure,

[0029] 10. Cylinder head, 100. Body, 120. Cam bearing seat, 130. Accommodation groove, 140. First side, 150. Second side,

[0030] 200, first connecting hole, 210, fixing member,

[0031] 300, second connecting hole, 310, connecting piece,

[0032] 400, connection hole group,

[0033] 500, cylinder mouth,

[0034] 600, mounting portion, 610, injector, 620, spark plug, 630, first mounting area, 640, second mounting area,

[0035] 700, the third connecting hole,

[0036] 800. Fourth connecting hole. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art. It should also be noted that, for ease of description, only the portions relevant to the present application are shown in the accompanying drawings.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Based on the above problems, embodiments of the present application provide a cylinder head, an engine, a hybrid assembly, and a vehicle.

[0040] In a first aspect, an embodiment of the present application provides a cylinder head. The cylinder head is used to be fixedly connected to the cylinder block to enclose a combustion chamber for piston movement. The cylinder block and the cylinder head are connected by fixings, and the cylinder head is subjected to a downward force from the fixings. A camshaft, a cam bearing seat, intake and exhaust valves, etc. are usually provided above the cylinder head. The cam bearing seat is connected to the cylinder head by fixings. During the operation of the engine, the intake and exhaust valves move up and down with the intake and exhaust processes. When the intake and exhaust valves move up and down, they contact the camshaft and provide an upward force to the camshaft. When the camshaft is subjected to the upward force, it transmits the force through the cam bearing seat. The force is then transferred to the cylinder head, causing the cylinder head to also be subjected to an upward force. The upward and downward forces cancel each other out, making the torque of the cylinder head in the up and down directions balanced. For a multi-cylinder engine, since the cylinder head needs to cover multiple cylinder holes, the cylinder head is designed to have a longer length in the front-to-back direction. If the fixings between the cylinder block and the cylinder head, and the fixings between the cam bearing seat and the cylinder head are not properly positioned on the cylinder head, the upward and downward forces on the cylinder head in the front-to-back direction may be uneven, causing the cylinder head to be subjected to a bending moment, which seriously affects the structural strength and load-bearing capacity of the cylinder head.

[0041] It should be noted that the aforementioned upward and downward refer to the relative directions between the cylinder head and the cylinder body, that is, the cylinder head is above the cylinder body, and the cylinder body is below the cylinder head; when actually applied to a vehicle, different engine types may cause the cylinder head and the cylinder body to not be arranged in the up and down directions of the vehicle, but the cylinder head and the cylinder body can still be considered to be relatively arranged in a certain direction, and this certain direction is the up and down direction described in the embodiment of this application.

[0042] Based on this, an embodiment of the present application proposes a cylinder head, comprising a body, the body being provided with a plurality of cylinder ports, the cylinder ports being used to enclose, together with the cylinder bores on the cylinder block, a combustion chamber, the plurality of cylinder ports being sequentially arranged and spaced apart in a first direction, the first direction being the aforementioned front-to-back direction, i.e., the direction in which the camshaft extends. The body being provided with a first connecting hole for passage of a fixing member, which is used to connect the body to the cylinder block. The body being provided with a second connecting hole for passage of a connecting member, which is used to connect the body to a cam bearing seat. The first connecting hole and the second connecting hole being spaced apart and perpendicular to the first direction, i.e., the direction of the line connecting the centers of the first and second connecting holes is perpendicular to the first direction.

[0043] By setting as above, the fixing member and the connecting member are arranged perpendicular to the first direction, so that there is no misalignment between the fixing member and the connecting member in the first direction, and the upward and downward forces acting on the cylinder head are on an overlapping straight line, thereby balancing the torque of the cylinder head in the first direction, avoiding the bending deformation problem caused by uneven force on the cylinder head due to the misaligned setting of the fixing member and the connecting member in the first direction, improving the structural strength and load-bearing capacity of the cylinder head, and improving reliability.

[0044] It should be noted that the fixing members and the connecting members may both adopt bolts or threaded structures, or other connection structures. Those skilled in the art may select an appropriate connection structure or bolts of sufficient strength according to the connection strength requirements.

[0045] In this embodiment, the first direction is the extension direction of the camshaft, that is, the length direction of the cylinder head body, and the second direction is the arrangement direction between the intake camshaft and the exhaust camshaft, that is, the width direction of the cylinder head body.

[0046] In some embodiments of the present application, the main body has a first side and a second side facing away from each other, the cylinder port and the first connecting hole are both arranged on the first side, the cylinder block of the engine is attached to the first side to enclose the cylinder port of the main body to form a combustion chamber, the fixing part is inserted into the first connecting hole and connected to the fixed cylinder block, so that the main body and the cylinder block are fixedly connected; a support seat for installing the cam bearing seat is provided on the second side, the second connecting hole is opened on the support seat, the camshaft cover of the engine is provided on the second side, and the camshaft cover and the second side enclose a receiving space to protect the internal camshaft, spark plug, injector and other structures.

[0047] In this embodiment, the first connection hole and the second connection hole are respectively located on opposite sides, which is more conducive to connection and fixation with the corresponding components.

[0048] In some embodiments of the present application, each support seat is respectively provided with two second connecting holes. When connected to the bearing seat, the two sides of the bearing seat are respectively connected to the support seat through the two second connecting holes. A through hole for the camshaft to pass through is provided in the middle of the bearing seat to support the rotation of the camshaft. The two second connecting holes are spaced apart in the second direction.

[0049] In this embodiment, the second connecting holes are set as two to enhance the connection strength between the bearing seat and the support seat. The camshaft set on the bearing seat will exert an upward force on the bearing seat. The two second connecting holes are set at intervals, for example, on both sides of the camshaft, which can balance the force and avoid uneven force that may be caused when set on one side.

[0050] It should be noted that the bearing seat can be a split structure, that is, the bearing seat includes an upper bearing seat and a lower bearing seat, and the connecting member passes through the upper bearing seat and the lower bearing seat in sequence and is connected and fixed on the support seat.

[0051] Optionally, the camshaft requires support at multiple positions, the camshaft extends along a first direction, and a plurality of support seats are provided, which are spaced apart along the first direction.

[0052] In some embodiments of the present application, the first connecting hole passes through the first side to the support seat on the second side, and the first connecting hole is located between the two second connecting holes. Relative to the staggered arrangement of the first connecting hole and the two second connecting holes, this hole installation method can make the upward and downward forces applied to the cylinder head during the operation of the camshaft on an overlapping straight line, thereby preventing the cylinder head from bending and deforming in the first direction.

[0053] Optionally, both ends of the support seat in the first direction protrude in a direction away from the second side, and the two second connection holes are respectively provided at the two ends of the protrusion, and the first connection hole extends through the space between the two ends of the protrusion. When a bolt is used as the fixing member, after the fixing member passes through the first connection hole from the second side and is connected to the cylinder body, the bolt head remains on the second side. The support seats protruding at both ends can lift the bearing seat, avoiding interference between the bearing seat and the bolt head, thereby improving the integration of the cylinder head.

[0054] In some embodiments of the present application, a receiving groove for receiving the camshaft is provided on the second side, and the support seat is provided in the receiving groove. In this way, the camshaft is received in the receiving groove, reducing the overall height of the cylinder head and improving the integration of the cylinder head.

[0055] In some embodiments of the present application, the cylinder head includes a connection hole group, the connection hole group includes a first connection hole and two second connection holes, the two second connection holes are spaced apart in the second direction, and the first connection hole is located between the two second connection holes.

[0056] By setting the connecting hole group, the moment of the cylinder cover in the first direction can be balanced, and the bending deformation caused by uneven force on the cylinder cover can be further prevented.

[0057] In some embodiments of the present application, there are multiple groups of connection holes, some of which are spaced apart in the first direction. In particular, for engines with multiple cylinder bores and long cylinder heads, multiple groups of connection holes spaced apart in the first direction are required to ensure the connection strength between the cam bearing seat, cylinder head, and cylinder block.

[0058] In some embodiments of the present application, a plurality of mounting portions are provided on the main body, the mounting portions being used to install injectors and / or spark plugs extending into the cylinder ports, the plurality of mounting portions corresponding one to one with the plurality of cylinder ports, and the plurality of mounting portions being spaced apart in the first direction.

[0059] The fuel injector is used to spray gasoline into the cylinder of the engine, and the spark plug is used to generate an electric spark to ignite the mixed gas in the cylinder. The mounting portion is arranged on the side of the cylinder head body facing away from the cylinder block, corresponding to the cylinder port. The fuel injector and the spark plug can be mounted on the mounting portion separately or simultaneously. Preferably, the fuel injector and the spark plug are arranged on one mounting portion at the same time, which can optimize the spatial layout of the cylinder head and make the structure of the engine more compact. In particular, for a horizontally opposed engine with exhaust on the upper side and intake on the lower side, this arrangement of the fuel injector and the spark plug makes it easier to disassemble and replace the fuel injector and the spark plug in the horizontally opposed engine, and reduces the impact on the cross-sectional area of the intake valve, so that the engine power can be maintained at a high level.

[0060] In some embodiments of the present application, the multiple mounting portions include adjacent first mounting portions and second mounting portions, at least one group of connection hole groups is located between the first mounting portion and the second mounting portion, and at least one group of connection hole groups is located on the side of the first mounting portion away from the second mounting portion.

[0061] In this embodiment, the connection hole group, the first mounting portion, and the second mounting portion are spaced apart in the first direction, which reduces the size of the cylinder head in the second direction, thereby improving the integration of the cylinder head.

[0062] Specifically, the size of the cylinder head body in the second direction is primarily affected by the distance between the intake and exhaust camshafts. In this embodiment, the connection hole group is located in the first direction of the mounting portion, and the position of the camshaft changes as the position of the connection hole group changes. When both the intake and exhaust camshafts are provided, since the connection hole groups are located in the first direction of each mounting portion, rather than in the second direction, the distance between the intake and exhaust camshafts is reduced, thereby reducing the size of the cylinder head body in the second direction.

[0063] In some embodiments of the present application, each mounting portion has a first mounting area and a second mounting area, the first mounting area is used to mount the injector, the second mounting area is used to mount the spark plug, and the first mounting area and the second mounting area are spaced apart in the second direction.

[0064] In this embodiment, the first installation area and the second installation area are spaced apart in the second direction, which can reduce the size of the cylinder head body in the first direction, thereby improving the integration of the cylinder head.

[0065] Specifically, if the first mounting area and the second mounting area are spaced apart in the first direction, the area of the mounting portion will occupy the setting position of the connecting hole group, and the length of the cylinder head body in the first direction needs to be extended to leave sufficient distance for setting the connecting hole group, resulting in an increase in the length of the cylinder head body in the first direction; therefore, in this embodiment, the first mounting area and the second mounting area are spaced apart in the second direction, which can significantly reduce the size of the cylinder head body in the first direction and improve the integration.

[0066] In addition, reducing the size of the cylinder head body in the first direction is also conducive to reducing the distance between multiple connection hole groups in the first direction. The force-bearing area of the cylinder head body is concentrated, which is conducive to optimizing the force torque of the cylinder head body and improving the life of the cylinder head.

[0067] In some embodiments, the first mounting area is located near the exhaust side of the engine, and the second mounting area is located near the intake side of the engine. Installing the fuel injector on the intake side ensures that the fuel is injected into the cylinder during the intake stroke or the early stage of the compression stroke, allowing the fuel and air to be fully mixed to form a uniform mixture. Installing the spark plug on the exhaust side can shorten the distance from the spark plug to the end of the mixture, allowing the flame to propagate faster after ignition and combustion to be more rapid, which helps to improve the power output and response speed of the engine. Figure 5 The injector is located on the intake side, at a 4.5° angle to the cylinder head top surface. The spark plug is located near the exhaust side, at an 11.2° angle to the cylinder head top surface. The spark plug hole is machined straight downward from the cylinder head top surface. The connection between the straight hole and the inclined hole is designed with a large taper angle to facilitate smooth downward installation of the ignition coil.

[0068] In some embodiments, a third connecting hole is further provided on the second side and passes through the first side. The third connecting hole is suitable for allowing a fixing member to pass through to be connected and fixed to the cylinder body. A fourth connecting hole is also provided on the second side. The fourth connecting hole is suitable for connecting to the end bearing seat so that the end bearing seat is supported on the end of the camshaft. The third connecting hole is arranged adjacent to the end bearing seat, and the third connecting hole and the fourth connecting hole are spaced apart in the first direction.

[0069] In this embodiment, since the end position of the camshaft is close to the edge of the cylinder head body, if the fourth connecting hole is set to be spaced apart from the third connecting hole in the second direction, the connection relationship at this position will easily fail. Therefore, it is not suitable to set the fourth connecting hole connected to the cylinder body near the edge position of the cylinder head body. In order to ensure the connection strength, the fourth connecting hole is set in the first direction of the third connecting hole.

[0070] It should be noted that even if the third connecting hole and the fourth connecting hole are spaced apart in the first direction, the first connecting hole and the second connecting hole are still spaced apart in the second direction, which can reduce part of the bending moment and achieve the effect of increasing the service life of the cylinder head body.

[0071] In a second aspect, embodiments of the present application provide an engine comprising the cylinder head of the first aspect, a cylinder block, and a fixing member, the fixing member connecting the cylinder head and the cylinder block via a first connecting hole. By employing the cylinder head of the first aspect, the stability of the engine structure and the uniformity of force distribution can be improved, thereby maintaining efficient engine operation.

[0072] Specifically, a cylinder block of the engine has a plurality of cylinder holes, and the plurality of cylinder holes are arranged in a one-to-one correspondence with the cylinder ports on the cylinder head to enclose and form corresponding combustion chambers.

[0073] Specifically, the engine further includes a connecting member, a camshaft, and a cam bearing seat. The connecting member connects the cam bearing seat and the cylinder head via a second connecting hole, and the camshaft is disposed on the cam bearing seat. Preferably, the cam bearing seat is configured in a split manner to optimize assembly steps and reduce the number of parts. During assembly, the cylinder head is first assembled to the cylinder block, the fixing member is tightened, and then the cam bearing seat is assembled to the cylinder head. The camshaft is then placed, and the cam bearing cover is mounted on the cam bearing seat, and the connecting member is tightened. Hollow cylindrical pins are used to locate the cam bearing seat and the cylinder head, and the cam bearing seat and the cam bearing cover.

[0074] Specifically, in order to make the spatial arrangement of the engine more compact, the cam bearing seat is arranged above the fixing member, which can further save installation space.

[0075] In a third aspect, an embodiment of the present application provides a hybrid assembly, including the engine of the second aspect. The hybrid assembly has good structural stability and uniform force on various components.

[0076] Fourthly, embodiments of the present application provide a vehicle comprising the engine of the second aspect or the hybrid powertrain of the third aspect. For example, the vehicle may be a hybrid vehicle, a gasoline-powered vehicle, or the like. Thus, the vehicle possesses all the features and advantages of the aforementioned engine, which will not be elaborated upon here. Overall, the vehicle's powertrain is reliable, structurally stable, and long-lasting.

[0077] It should be understood that the terms "center", "axial", "circumferential", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0078] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A cylinder head, characterized in that: include: A main body, wherein the main body is provided with a plurality of cylinder ports, the cylinder ports being used to enclose the cylinder body to form a combustion chamber, the plurality of cylinder ports being sequentially arranged and spaced apart in a first direction; The main body is provided with a first connecting hole, the first connecting hole being used for a fixing member connecting the main body and the cylinder to pass through; A second connecting hole is formed on the body, and the second connecting hole is used for a connecting piece connecting the body and the cam bearing seat to pass through; The first connection hole and the second connection hole are spaced apart in a second direction perpendicular to the first direction.

2. The cylinder head according to claim 1, characterized in that The body has a first side and a second side facing away from each other, and the cylinder port and the first connecting hole are both arranged on the first side; The second side is provided with a support seat for mounting a cam bearing seat, and the second connecting hole is opened on the support seat.

3. The cylinder head according to claim 2, characterized in that Two second connection holes are respectively provided on each of the support seats, and the two second connection holes are spaced apart in the second direction.

4. The cylinder head according to claim 3, characterized in that The first connecting hole passes through from the first side to the supporting base on the second side, and the first connecting hole is located between the two second connecting holes.

5. The cylinder head according to claim 2, characterized in that An accommodating groove for accommodating a camshaft is provided on the second side, and the support seat is arranged in the accommodating groove.

6. The cylinder head according to claim 1, characterized in that The cylinder head includes a connection hole group, which includes one first connection hole and two second connection holes. The two second connection holes are spaced apart in the second direction, and the first connection hole is located between the two second connection holes.

7. The cylinder head according to claim 6, characterized in that There are a plurality of connection hole groups, and some of the connection hole groups are spaced apart in the first direction.

8. The cylinder head according to claim 7, characterized in that The body is provided with a plurality of mounting portions, which are used to mount injectors and / or spark plugs extending into the cylinder ports. The plurality of mounting portions correspond to the plurality of cylinder ports one by one, and the plurality of mounting portions are spaced apart in the first direction.

9. The cylinder head according to claim 8, characterized in that The plurality of mounting portions include adjacent first mounting portions and second mounting portions, at least one group of connection hole groups is located between the first mounting portion and the second mounting portion, and at least one group of connection hole groups is located on a side of the first mounting portion away from the second mounting portion.

10. The cylinder head according to claim 9, characterized in that Each of the mounting portions has a first mounting area and a second mounting area, the first mounting area is used to mount the injector, the second mounting area is used to mount the spark plug, and the first mounting area and the second mounting area are spaced apart in the second direction.

11. An engine, characterized in that: The invention comprises a cylinder body, a fixing part and the cylinder head according to any one of claims 1 to 10, wherein the fixing part connects the main body and the cylinder body through the first connecting hole.

12. The engine according to claim 11, characterized in that The cylinder body has a plurality of cylinder holes, and the plurality of cylinder holes and the plurality of cylinder ports are arranged in a one-to-one correspondence and are surrounded to form a plurality of combustion chambers.

13. The engine according to claim 11, characterized in that It also includes a connecting piece, a camshaft and a cam bearing seat. The connecting piece connects the body and the cam bearing seat through the second connecting hole, and the camshaft is arranged on the cam bearing seat.

14. The engine according to claim 13, characterized in that The cam bearing seat is arranged directly above the fixing member.

15. A hybrid assembly, characterized in that: The engine comprises the engine described in any one of claims 10-14.

16. A vehicle, characterized in that: Comprising the engine according to any one of claims 10 to 14, or the hybrid assembly according to claim 15.

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