Cylinder body structure and vehicle

Abstract

The invention discloses a cylinder block structure and a vehicle, the cylinder block structure comprises a cylinder block main body, and the cylinder block main body is provided with a plurality of combustion chambers distributed along a first direction; the cylinder body water jacket is provided with a water inlet and a water feeding channel, the water inlet is communicated with the bottom wall of the water feeding channel, and the upper side of the water feeding channel is open and suitable for being communicated with the cylinder cover water jackets corresponding to the combustion chambers. The bottom wall of the water feeding channel is constructed to be a V-shaped wall face which is opened upwards relative to the water inlet so as to guide flow to the cylinder cover water jacket. According to the cylinder body structure, reasonable distribution of the cooling medium flow is achieved through the V-shaped wall face, a certain amount of cooling medium can be stored in the water feeding channel, the pressure loss of a water pump is reduced, the water feeding channel is integrated in the cylinder body, arrangement of external pipelines can be reduced, and therefore the problem that the pressure loss of the water pump is caused by the external pipelines is solved; the whole structure is simple, and the casting manufacturability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to a cylinder structure and a vehicle having the cylinder structure. Background Art

[0002] As regulations on vehicle emissions become increasingly stringent, hybrid vehicles are gradually replacing traditional fuel vehicles. Compared with engines, they need to have higher combustion thermal efficiency. The performance of the engine's internal cooling system affects the engine's efficiency and power output.

[0003] In the prior art, in order to meet the needs of engine water circuit layout, some methods are to set a water pump in the cylinder body, and then connect it to the cylinder head water jacket through an external water supply channel. The water supply channel is long and the water pump pressure loss is large. In addition, the pipeline layout is different for different vehicle models, and the versatility is low. Some methods directly integrate the water pump in the cylinder head, and require a built-in independent water supply channel. This makes the water supply channel occupy a large layout space and difficult to arrange, resulting in great difficulty in casting the cylinder head and increased manufacturing costs. Therefore, the above solutions all result in high engine cooling water circuit layout costs, and there is room for improvement. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a cylinder structure, which realizes the reasonable distribution of the cooling medium flow through the V-shaped wall surface, and can store a certain amount of cooling medium in the upper water channel, reducing the pressure loss of the water pump, and the upper water channel is integrated in the main body of the cylinder, which can reduce the setting of external pipelines, thereby reducing the problem of water pump pressure loss caused by external pipelines, and the overall structure is simple and the casting processability is good.

[0005] According to an embodiment of the present invention, the cylinder structure includes: a cylinder body, which is provided with a plurality of combustion chambers distributed along a first direction; a cylinder water jacket, which is provided with a water inlet and an upper water channel, wherein the water inlet is connected to the bottom wall of the upper water channel, the upper side of the upper water channel is open and suitable for communicating with cylinder head water jackets corresponding to the plurality of combustion chambers, and the bottom wall of the upper water channel is constructed as a V-shaped wall surface open upward relative to the water inlet to guide flow to the cylinder head water jacket.

[0006] According to the cylinder structure of the embodiment of the present invention, by setting the bottom wall of the upper water channel to be a V-shaped wall surface open upward relative to the water inlet, the cooling medium flowing into the upper water channel from the water inlet can be guided along the two sides of the V-shaped wall surface and then flow into the cylinder head water jackets corresponding to the multiple combustion chambers to cool the multiple combustion chambers. The V-shaped wall surface is used to achieve a reasonable distribution of the cooling medium flow rate, and a certain amount of cooling medium can be stored in the upper water channel to reduce the pressure loss of the water pump. The upper water channel is integrated in the cylinder body, which can shorten the cooling medium path between the upper water channel and the cylinder head water jacket, reduce the setting of external pipelines, thereby reducing the problem of water pump pressure loss, and there is no need to build an independent water supply channel into the cylinder head. The overall structure is simple, the casting processability is good, the cylinder structure size is small, the layout space is small, and the number of parts and costs are reduced.

[0007] According to the cylinder structure of some embodiments of the present invention, the V-shaped wall includes a first side guide surface and a second side guide surface distributed along the first direction, the water inlet is located between the first side guide surface and the second side guide surface, the first side guide surface and the second side guide surface respectively correspond to the position of at least one combustion chamber, and the first side guide surface and the second side guide surface are both constructed to extend from bottom to top in a direction away from the water inlet.

[0008] According to the cylinder structure of some embodiments of the present invention, the number of combustion chambers corresponding to the first side guide surface is greater than the number of combustion chambers corresponding to the second side guide surface.

[0009] According to the cylinder structure of some embodiments of the present invention, the first side guide surface includes at least two first side guide planes distributed along the first direction, the first side guide planes are configured to extend obliquely from bottom to top in a direction away from the water inlet, and the at least two first side guide planes are distributed in a one-to-one correspondence with the at least two combustion chambers;

[0010] And / or, the second side guide surface includes at least one second side guide plane distributed along the first direction, the second side guide plane is constructed to extend obliquely from bottom to top in a direction away from the water inlet, and at least one second side guide plane is distributed one-to-one with at least one combustion chamber.

[0011] According to the cylinder structure of some embodiments of the present invention, the angles between two adjacent first side guide planes and the top surface of the cylinder body are different, and the angle between at least two of the first side guide planes and the top surface of the cylinder body gradually decreases in the direction away from the water inlet.

[0012] According to the cylinder structure of some embodiments of the present invention, there are two first side guide planes, and the angle between the one of the two first side guide planes close to the water inlet and the top surface of the cylinder body is a1, and the angle between the one far from the water inlet and the top surface of the cylinder body is a2. There is one second side guide plane and the angle between it and the top surface of the cylinder body is a3, and it satisfies: 3°≤a2≤a3≤a1≤30°.

[0013] According to the cylinder structure of some embodiments of the present invention, in two adjacent first side guide planes, the height difference between the middle part of the one far from the water inlet and the top surface of the cylinder body is h1, and the height difference between the middle part of the one close to the water inlet and the top surface of the cylinder body is h2, and it satisfies: h1<0.8h2.

[0014] According to the cylinder structure of some embodiments of the present invention, the first side guide surface further includes a first side guide arc surface, the first side guide arc surface is connected to a side of the first side guide plane close to the water inlet, the radius of the first side guide arc surface is r1, and satisfies: r1≥20mm;

[0015] And / or, the second side guide surface also includes a second side guide arc surface, the second side guide arc surface is connected to the side of the second side guide plane close to the water inlet, the radius of the second side guide arc surface is r2, and satisfies: r2≥20mm.

[0016] According to the cylinder structure of some embodiments of the present invention, the height difference between the intersection of the tangents at both ends of the first side guide arc surface and the top surface of the cylinder body is h3, and the height difference between the intersection of the tangents at both ends of the second side guide arc surface and the top surface of the cylinder body is h4, and the following conditions are satisfied: h3≥1.2h4;

[0017] And / or, the V-shaped wall surface also includes a bottom arc surface connected between the first side guide surface and the second side guide surface, the bottom arc surface is located below the water inlet, the distance between the inner bottom wall of the water inlet and the lower end point of the bottom arc surface is h5, and satisfies: h5≥3mm.

[0018] The present invention also provides a vehicle.

[0019] A vehicle according to an embodiment of the present invention comprises a cylinder head structure and a cylinder block structure according to any one of the above embodiments, wherein the cylinder head structure is installed above the cylinder block structure.

[0020] The advantages of the vehicle and the cylinder structure described above over the prior art are the same and will not be described in detail here.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a top view of a cylinder structure according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0025] Figure 3 is a front view of a cylinder structure according to an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of a cylinder water jacket of a cylinder structure according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Cylinder structure 100,

[0029] Cylinder body 1,

[0030] Cylinder water jacket 2, water inlet 21, upper water channel 22, V-shaped wall 221, first side guide surface 222, first side guide plane 2221, first side guide arc surface 2222, second side guide surface 223, second side guide plane 2231, second side guide arc surface 2232, bottom arc surface 224. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0035] Reference below Figure 1-Figure 4 A cylinder structure 100 according to an embodiment of the present invention is described. By setting an upper water channel 22 with a V-shaped structure, the cooling medium flowing into the upper water channel 22 from the water inlet 21 can flow along both sides of the V-shaped wall 221 to guide the cylinder head water jackets corresponding to the multiple combustion chambers to cool the multiple combustion chambers. The upper water channel 22 is integrated in the cylinder body 1, which can shorten the cooling medium path between the upper water channel 22 and the cylinder head water jacket, reduce the setting of external pipelines, thereby reducing the problem of water pump pressure loss, and does not need to build an independent water supply channel into the cylinder head. The overall structure is simple and the casting processability is good. The cylinder structure 100 is small in size and small in layout space, which reduces the number of parts and costs.

[0036] like Figure 1-Figure 4 As shown, a cylinder structure 100 according to an embodiment of the present invention includes: a cylinder body 1 and a cylinder water jacket 2 .

[0037] Specifically, the cylinder structure 100 is one of the main structures of the engine, and the cylinder body 1 is the main structure of the cylinder structure 100, which can play a supporting and fixing role. The cylinder body 1 is provided with a plurality of combustion chambers distributed along the first direction, and a plurality of cylinder parts distributed along the first direction are also formed in the cylinder body 1, and each cylinder part is correspondingly provided with a piston, and each cylinder part is generally a cylindrical space, in which the piston reciprocates, and when each piston runs to the highest point in the cylinder part, the space above the top of the piston is a combustion chamber, and the combustion chamber is used for the combustion of fuels such as gasoline and diesel and releases energy. Among them, the plurality of cylinder parts can be evenly spaced and distributed along the first direction, and the plurality of combustion chambers can be evenly spaced and distributed along the first direction.

[0038] By setting up multiple combustion chambers, these combustion chambers can work independently but collaboratively, ensuring that the engine can continuously and stably output power to meet various operating requirements.

[0039] The number of cylinders may be two, three, four, etc., and the number of combustion chambers may be two, three, four, etc.

[0040] Generally, the first direction may be a horizontal direction, and the horizontal direction includes a front-to-back direction and a left-to-right direction. Thus, the first direction may be a front-to-back direction or a left-to-right direction.

[0041] Specifically, the cylinder water jacket 2 is arranged in the cylinder body 1, and the cylinder water jacket 2 is arranged by utilizing the space of the cylinder body 1. The cylinder water jacket 2 has a cooling medium flowing therein, and can be used to provide the cooling medium to the cylinder head water jacket. The cylinder water jacket 2 is provided with a water inlet 21 for the inflow of the cooling medium, wherein, as Figure 3 As shown, the water inlet 21 can penetrate the side of the cylinder body 1 along the second direction and open outward, and the second direction is intersecting with the first direction, wherein the water inlet 21 can be connected to a water pump to deliver the external cooling medium into the upper water channel 22. The cylinder water jacket 2 is provided with an upper water channel 22, and the upper water channel 22 is a flow space for the cooling medium. The water inlet 21 is connected to the bottom wall of the upper water channel 22, that is, the water inlet 21 is located in the bottom area of ​​the upper water channel 22, so that the cooling medium can flow into the upper water channel 22 from the water inlet 21 located at the bottom, and the water inlet 21 is provided in the bottom area of ​​the upper water channel 22, so that the cooling medium can gradually flow upward from the bottom of the upper water channel 22, and the flow stability is good, and the upper water channel 22 can accommodate a certain amount of cooling medium, reducing the pressure loss of the water pump.

[0042] The upper side of the upper water channel 22 is open and is suitable for communicating with the cylinder head water jackets corresponding to the multiple combustion chambers, wherein each combustion chamber is provided with a corresponding cylinder head water jacket, and the cylinder head water jacket is used to circulate cooling medium and to dissipate heat for the multiple combustion chambers respectively. In other words, the upper water channel 22 is located at the lower side of the combustion chamber, and the upper water channel 22 is opened upward, and the open side of the upper water channel 22 can be communicated with the cylinder head water jackets corresponding to the multiple combustion chambers in the up-down direction, so that the cooling medium can flow into the cylinder head water jackets of each combustion chamber, so as to realize cooling of the multiple combustion chambers.

[0043] The bottom wall of the upper water channel 22 is constructed as a V-shaped wall surface 221 that is open upward relative to the water inlet 21 to guide the water to the cylinder head water jacket. That is, the upper water channel 22 can be constructed as a V-shaped channel that is open upward relative to the water inlet 21. When the engine is working, a large amount of heat is generated in the combustion chamber during combustion. By guiding the cooling medium from the water inlet 21 to the two sides of the V-shaped wall surface 221 along the rear edge of the upper water channel 22, the cooling medium can flow from the water inlet 21 in opposite directions, and after the cooling medium fills the upper water channel 22, it flows to multiple cylinder head water jackets, so that the cooling medium can cool multiple combustion chambers at the same time. The cooling medium can be cooling water.

[0044] Therefore, by constructing the upper water channel 22 as a V-shaped channel open upward, the cooling medium entering from the water inlet 21 can be guided, which can increase the flow rate of the cooling medium. The V-shaped channel has a simple structure, is easy to process, and reduces costs.

[0045] The upper water channel 22 and the cylinder body 1 can be integrally cast. When a low-pressure casting process is used, reinforcing ribs can be added to the top of the upper water channel 22 to avoid the water inlet position of the cylinder head water jacket to improve the rigidity.

[0046] At the same time, it should be noted that hybrid vehicles are gradually replacing traditional fuel vehicles, and they need to have higher combustion thermal efficiency relative to the engine. The water circulation of the engine's internal cooling system is adjusted from the cylinder water chamber to the cylinder head water chamber to the cylinder head water chamber, so that the cold water passes through the cylinder head first, and the cylinder head operating temperature is reduced by about 20°C. High temperature will cause thermal expansion and material performance degradation of internal engine components, affecting the efficiency and power output of the engine; lowering the combustion temperature helps reduce harmful substances such as nitrogen oxides (NOx) and particulate matter (PM) produced during the combustion process, helping to meet more stringent environmental standards and reduce environmental pollution; lower engine temperature can make the engine run more smoothly, reduce engine noise and vibration caused by high temperature, and improve driving comfort; flowing down through the cylinder head water jacket to the cylinder water jacket, the body can be quickly heated up during cold start, reducing heat transfer losses during combustion and thus improving thermal efficiency.

[0047] Moreover, in the related technologies, in order to meet the needs of engine water circuit layout, some methods arrange a water pump in the cylinder body, and then connect it to the cylinder head water jacket through an external water supply channel. Although the engine layout is simple, the water supply channel needs to be arranged externally, the water supply pipeline is long and the cost is high, and the pipeline is provided with multiple bends, the pump pressure loss is large, and it is affected by the assembly space of surrounding parts. Different types of vehicles need to design pipelines with different directions, and the versatility is low; some methods directly integrate the water pump in the cylinder head, and an intake manifold is provided on the intake side of the cylinder head, and an exhaust manifold is provided on the exhaust side. When the water pump is integrated on the cylinder head, the cylinder head needs to be widened, the width of the entire engine increases, the space occupied by the entire vehicle cabin is large, and the compactness of the structure is poor; and a separate water supply channel needs to be provided, and the water supply channel has a complex structure and needs to be formed by casting, which causes the problem of great casting difficulty.

[0048] According to the cylinder structure 100 of the embodiment of the present invention, by setting the bottom wall of the upper water channel 22 to be a V-shaped wall 221 that is open upward relative to the water inlet 21, the cooling medium that flows into the upper water channel 22 from the water inlet 21 can be guided along both sides of the V-shaped wall 221, so that the cooling medium fills the upper water channel 22 along a first direction, and then the cooling medium can flow from the open side of the upper water channel 22 into the cylinder head water jackets corresponding to multiple combustion chambers at the same time to cool the multiple combustion chambers, and the cooling medium then flows into the cylinder water jacket to continue cooling the cylinder, and finally flows out from the cylinder water jacket. In this way, the cylinder head and the cylinder body 1 are cooled cyclically, and the temperature of each component in the engine can be maintained stable to meet the efficiency and power output requirements of the engine.

[0049] The cylinder water jacket is arranged in parallel with the upper water channel 22. The cooling medium enters the upper water channel 22 through the water inlet and flows directly to the cylinder head water jacket. The multiple combustion chambers can be cooled by the low-temperature cooling medium. The V-shaped upper water channel 22 can realize the reasonable distribution of the cooling medium flow rate, and a certain amount of cooling medium can be stored in the upper water channel 22, thereby reducing the pressure loss of the water pump. The upper water channel 22 is integrated in the cylinder body 1, which can shorten the cooling medium path between the upper water channel 22 and the cylinder head water jacket, and the structure of the cylinder body 1 can be used to realize the water supply to the cylinder head water jacket, which can reduce the setting of external pipelines, thereby reducing the problem of water pump pressure loss. There is no need to integrate a water pump in the cylinder head, and there is no need to build an independent water supply channel in the cylinder head. The overall structure of the cylinder head is simpler, which solves the problem that the water supply channel has a large layout space and is difficult to arrange in the cylinder head. The overall structure is simple and the casting process is good. The cylinder structure 100 has a smaller overall size and a compact layout, occupies less layout space of the vehicle, reduces the number of parts and costs, and has a better use effect. In addition, a water supply channel 22 is built into the cylinder body 1, which can be applicable to various vehicle models, has good cooling effect, low cooling cost and strong versatility.

[0050] In some embodiments, the V-shaped wall 221 includes a first side guide surface 222 and a second side guide surface 223 distributed along a first direction, and the water inlet 21 is located between the first side guide surface 222 and the second side guide surface 223, and the first side guide surface 222 and the second side guide surface 223 respectively correspond to the position of at least one combustion chamber.

[0051] Specifically, the first side guide surface 222 and the second side guide surface 223 are spaced apart and distributed along the first direction, and the water inlet 21 is located between the first side guide surface 222 and the second side guide surface 223, so that the cooling medium can be guided along the first side guide surface 222 and the second side guide surface 223 respectively after flowing in from the water inlet 21.

[0052] The first side guide surface 222 corresponds to the position of at least one combustion chamber, for example, the first side guide surface 222 may correspond to the position of one combustion chamber, or the first side guide surface 222 may correspond to the positions of two or three combustion chambers, and the first side guide surface 222 is set to match the number of combustion chambers. The second side guide surface 223 corresponds to the position of at least one combustion chamber, for example, the second side guide surface 223 may correspond to the position of one combustion chamber, and the second side guide surface 223 is set to match the number of combustion chambers, that is, it can be adapted to different types of engines.

[0053] Both the first side guide surface 222 and the second side guide surface 223 are constructed to extend from bottom to top in a direction away from the water inlet 21, that is, the first side guide surface 222 and the second side guide surface 223 extend from bottom to top in a direction away from each other, respectively, so as to guide the cooling medium in two directions.

[0054] Furthermore, a portion of the cooling medium entering from the water inlet 21 can flow from bottom to top along the first side guide surface 222 toward a direction away from the water inlet 21, so as to be guided toward the combustion chamber corresponding to the first side guide surface 222, and another portion of the cooling medium entering from the water inlet 21 can flow from bottom to top along the second side guide surface 223 toward a direction away from the water inlet 21, so as to be guided toward the combustion chamber corresponding to the second side guide surface 223, so as to achieve cooling of multiple combustion chambers.

[0055] Thus, by diverting the cooling medium in two directions, the cooling medium can quickly fill the entire upper water channel 22 along the first direction to increase the flow rate of the cooling medium, and can improve the cooling efficiency of the cooling medium for multiple combustion chambers to reduce the temperature of the cylinder head, thereby improving the operating stability of various structures of the engine.

[0056] The first side guide surface 222 and the second side guide surface 223 may be respectively configured as inclined structures.

[0057] In some embodiments, the number of combustion chambers corresponding to the first side guide surface 222 is greater than the number of combustion chambers corresponding to the second side guide surface 223. That is, the upper water channel 22 requires a larger flow rate of cooling medium on the side of the first side guide surface 222 to cool the large number of combustion chambers, and the upper water channel 22 requires a smaller flow rate of cooling medium on the side of the second side guide surface 223 to cool the small number of combustion chambers. In this way, the cooling of each combustion chamber can be more stable and reliable.

[0058] Specifically, the water inlet 21 is located between the first side guide surface 222 and the second side guide surface 223, and the first side guide surface 222 and the second side guide surface 223 are asymmetrically distributed relative to the water inlet 21. In actual design, the first side guide surface 222 can be set corresponding to two combustion chambers, and the second side guide surface 223 can be set corresponding to one combustion chamber, or the first side guide surface 222 can be set corresponding to three combustion chambers, and the second side guide surface 223 can be set corresponding to one combustion chamber or two combustion chambers. The setting method is not limited and can be flexibly selected.

[0059] Furthermore, the first side guide surface 222 can be made to guide flow toward the cylinder head water jackets of a larger number of combustion chambers to cool a larger number of combustion chambers, and the second side guide surface 223 can be made to guide flow toward the cylinder head water jackets of a smaller number of combustion chambers to cool a smaller number of combustion chambers, wherein the water inlet 21 can be arranged corresponding to a middle combustion chamber, so that the cooling medium entering through the water inlet 21 can directly provide cooling medium to the cylinder head water jacket of the combustion chamber arranged corresponding thereto, thereby improving the cooling efficiency of the combustion chamber.

[0060] Furthermore, the water inlet 21 may not be arranged corresponding to the combustion chamber, and its arrangement manner is diverse and can be flexibly selected.

[0061] In addition, the number of combustion chambers corresponding to the first side guide surface 222 can be set equal to the number of combustion chambers corresponding to the second side guide surface 223, that is, the upper water channels 22 of the V-shaped structure are symmetrically distributed along the first direction. In addition, the number of combustion chambers corresponding to the first side guide surface 222 can be set less than the number of combustion chambers corresponding to the second side guide surface 223, that is, the upper water channels 22 of the V-shaped structure are asymmetrically distributed along the first direction. There are various setting methods, which can be flexibly selected according to actual needs.

[0062] In some embodiments, the first side guide surface 222 includes at least two first side guide planes 2221 distributed along the first direction, and the first side guide planes 2221 are constructed to extend obliquely from bottom to top in a direction away from the water inlet 21, and at least two first side guide planes 2221 are distributed one-to-one with at least two combustion chambers.

[0063] Specifically, the first side guide surface 222 includes at least two first side guide planes 2221, and the at least two first side guide planes 2221 are distributed along the first direction, which can guide the cooling medium along the first direction, and the at least two first side guide planes 2221 are distributed one-to-one with at least two combustion chambers, so that the cooling medium can be guided to the cylinder water jacket 2 of the corresponding combustion chamber through the at least two first side guide planes 2221, so as to cool the at least two combustion chambers respectively, and by arranging the first side guide planes 2221 to correspond to the combustion chamber, the cooling medium can cool the combustion chamber accordingly, thereby improving the accuracy and reliability of the cooling of the combustion chamber by the cooling medium, so as to well reduce the temperature of the combustion chamber.

[0064] Among them, the number of the first side guide planes 2221 matches the number of the combustion chambers. The first side guide planes 2221 can be set to two, three, four, etc. In this embodiment, the number of the second side guide planes 2231 is two.

[0065] like Figure 2 and Figure 4 As shown, at least two first side guide planes 2221 can be configured as an inclined structure and extend obliquely from bottom to top in a direction away from the water inlet 21, so that the cooling medium entering from the water inlet 21 can flow obliquely from bottom to top along the first side guide planes 2221, which can improve the guiding effect of the cooling medium and facilitate the cooling medium to be quickly guided from one first side guide plane 2221 to the next first side guide plane 2221, and the first side guide plane 2221 corresponding to the combustion chamber is set as an inclined structure, which can increase the flow rate of the cooling medium to improve the cooling efficiency of the combustion chamber. And the structure is simple and easy to process.

[0066] In other embodiments, the second side guide surface 223 includes at least one second side guide plane 2231 distributed along the first direction, and the second side guide plane 2231 is constructed to extend obliquely from bottom to top in a direction away from the water inlet 21, and at least one second side guide plane 2231 is distributed one-to-one with at least one combustion chamber.

[0067] Specifically, the first side guide surface 222 includes at least one second side guide plane 2231, and the at least one second side guide plane 2231 is distributed along the first direction, and can guide the cooling medium along the first direction. The at least one second side guide plane 2231 is distributed one-to-one with at least one combustion chamber, and the cooling medium can be guided to the cylinder water jacket 2 of the corresponding combustion chamber through the at least one second side guide plane 2231, and the at least one combustion chamber can be cooled. By setting the second side guide plane 2231 corresponding to the combustion chamber, the cooling medium can cool the combustion chamber accordingly, thereby improving the accuracy and reliability of the cooling of the combustion chamber by the cooling medium, so as to well reduce the temperature of the combustion chamber.

[0068] Among them, the number of second side guide planes 2231 matches the number of combustion chambers. The second side guide planes 2231 can be set to one, two, etc., and their number is less than the number of first side guide planes 2221. In this embodiment, the second side guide plane 2231 is one.

[0069] like Figure 2 and Figure 4 As shown, at least one second side guide plane 2231 can be configured as an inclined structure and extend obliquely from bottom to top in a direction away from the water inlet 21, so that the cooling medium entering from the water inlet 21 can flow obliquely from bottom to top along the second side guide plane 2231, which can improve the guiding effect of the cooling medium, and the first side guide plane 2221 corresponding to the combustion chamber is set as an inclined structure, which can increase the flow rate of the cooling medium to improve the cooling efficiency of the combustion chamber. And the structure is simple and easy to process.

[0070] In some embodiments, the angles between two adjacent first side guide planes 2221 and the top surface of the cylinder body 1 are different, and the angle between at least two first side guide planes 2221 and the top surface of the cylinder body 1 gradually decreases in the direction away from the water inlet 21.

[0071] Specifically, there is an angle between the first side guide plane 2221 and the top surface of the cylinder body 1, and the angles between the two adjacent first side guide planes 2221 and the top surface of the cylinder body 1 are different, so different guide effects can be achieved. Among them, the angle between the first side guide plane 2221 near the water inlet 21 and the top surface of the cylinder body 1 is set larger, that is, the inclination angle of a first side guide plane 2221 near the water inlet 21 is set larger, so that the first side guide plane 2221 near the water inlet 21 can have a larger guide angle for the cooling medium, which is conducive to more cooling medium flowing along the first side guide plane 2221, and a certain guide effect can be achieved.

[0072] And the angle between a first side guide plane 2221 away from the water inlet 21 and the top surface of the cylinder body 1 is set to be smaller, that is, the inclination angle of a first side guide plane 2221 away from the water inlet 21 is set to be smaller, which can make the diversion angle of the first side guide plane 2221 away from the water inlet 21 to the cooling medium smaller, and the inclination angle of the first guide plane away from the water inlet 21 is small, which can make the cooling medium flow along the first side guide plane 2221 with a smaller inclination angle, and achieve a certain diversion effect.

[0073] Furthermore, the angle between at least two first side guide planes 2221 and the top surface of the cylinder body 1 is gradually reduced in the direction away from the water inlet 21, so that the cross-sectional area of ​​the upper water channel 22 gradually decreases as it gradually moves away from the water inlet 21, and the flow rate of the cooling medium can be increased, and the flow rate of the cooling medium to the cylinder head water jacket of the corresponding combustion chamber can be increased through at least two first side guide planes 2221, so as to improve the cooling efficiency of the cooling medium to at least two combustion chambers. Moreover, the cross-sectional area of ​​the upper water channel 22 gradually decreases as it gradually moves away from the water inlet 21, which can reduce the setting space of the upper water channel 22 in the cylinder body 1, reduce the possibility of interference with other structures, and improve the integration of the upper water channel 22 and the cylinder body 1.

[0074] In some embodiments, there are two first side guide planes 2221, the angle between the one close to the water inlet 21 and the top surface of the cylinder body 1 is a1, and the angle between the one far away from the water inlet 21 and the top surface of the cylinder body 1 is a2, there is one second side guide plane 2231 and the angle between the second side guide plane 2231 and the top surface of the cylinder body 1 is a3, and the following conditions are satisfied: 3°≤a2≤a3≤a1≤30°.

[0075] Specifically, in this embodiment, Figure 1 As shown, the cylinder structure 100 is provided with four cylinders, and correspondingly, there are four combustion chambers. The water inlet 21 is arranged at the position corresponding to the second combustion chamber. There are two first side guide planes 2221, and the two first side guide planes 2221 are arranged corresponding to the two combustion chambers. There is one second side guide plane 2231, and one second side guide plane 2231 is arranged corresponding to one combustion chamber, which can form an asymmetric water supply channel 22 along the first direction.

[0076] Among them, Figure 2 As shown, the angle between a first side guide plane 2221 close to the water inlet 21 and the top surface of the cylinder body 1 is a1, and a1 can be 3°, 5°, 7°, 10°, 12°, 15°, 18°, 20°, 25°, 30°, etc., and its value is not limited to the above, and can be flexibly selected. And the angle between a first side guide plane 2221 away from the water inlet 21 and the top surface of the cylinder body 1 is a2, and a2 can be 3°, 5°, 7°, 10°, 12°, 15°, 18°, 20°, 25°, 30°, etc., and its value is not limited to the above, and can be flexibly selected. In addition, the angle between the second side guide plane 2231 and the top surface of the cylinder body 1 is set to a3, and a3 can be 3°, 5°, 7°, 10°, 12°, 15°, 18°, 20°, 25°, 30°, etc. Its value is not limited to the above and can be flexibly selected.

[0077] In actual design, it is necessary to set the value of a2 to be smaller than a1, that is, a2≤a1, so that the angle between the two first side guide planes 2221 and the top surface of the cylinder body 1 can be gradually reduced in the direction away from the water inlet 21, so that the cross-sectional area of ​​the upper water channel 22 gradually decreases as it gradually moves away from the water inlet 21, which can increase the flow rate of the cooling medium, and set a3≤a1, so that the flow rate of the water inlet 21 near the second side guide plane 2231 can be smaller than the flow rate of the water inlet 21 near the first side guide plane 2221, so that the overall flow of the cooling medium on at least two first side guide planes 2221 and one second side guide plane 2231 can be evenly distributed, so that the flow entering the cylinder head water jacket corresponding to multiple combustion chambers is uniform, so as to improve the cooling uniformity of multiple combustion chambers.

[0078] Among them, it should be noted that the angles of a1, a2 and a3 cannot be set too small, otherwise the cross-sectional area of ​​the overall water supply channel 22 will be too small and a certain amount of cooling medium cannot be stored. The angles of a1, a2 and a3 cannot be set too large, otherwise the cross-sectional area of ​​the overall water supply channel 22 will be too large, which will cause the water pump to interfere with the surrounding parts, which is not conducive to the miniaturization of the engine.

[0079] In some embodiments, among two adjacent first side guide planes 2221, the height difference between the middle part of the one far from the water inlet 21 and the top surface of the cylinder body 1 is h1, and the height difference between the middle part of the one close to the water inlet 21 and the top surface of the cylinder body 1 is h2, and it satisfies: h1<0.8h2.

[0080] Specifically, there is a height difference between the middle part away from the water inlet 21 and the top surface of the cylinder body 1, and this height difference is set to h1, which can enable the upper water channel 22 to form an accommodating space between the first side guide plane 2221 away from the water inlet 21 and the top surface of the cylinder body 1 for accommodating an appropriate amount of cooling medium, and there is a height difference between the middle part close to the water inlet 21 and the top surface of the cylinder body 1, and this height difference is set to h2, which can enable the upper water channel 22 to form an accommodating space between the first side guide plane 2221 close to the water inlet 21 and the top surface of the cylinder body 1 for accommodating an appropriate amount of cooling medium.

[0081] Among them, h1<h2, and h1 can be 0.75h2, 0.70h2, 0.65h2, 0.60h2, 0.55h2, 0.50h2, etc., which can reduce the height difference between the middle part of the first side guide plane 2221 gradually away from the water inlet 21 and the top surface of the cylinder body 1, that is, the cross-sectional area of ​​the upper water channel 22 gradually away from the water inlet 21 can be reduced, and the flow speed of the cooling medium can be increased, so that the cooling medium flow speed of the upper water channel 22 reaches the design standard of 2m / s to meet the water supply demand of the cylinder head water jacket.

[0082] At the same time, it should be noted that the height difference h1 between the middle part of the one away from the water inlet 21 and the top surface of the cylinder body 1 should be greater than or equal to 10 mm, and there is also a height difference between the middle part of the second side guide plane 2231 and the top surface of the cylinder body 1. The height difference is set to h6, and h6 should be greater than or equal to 10 mm. In this way, a certain amount of cooling medium can be stored in the upper water channel 22, which can adapt to the unstable water pressure caused by the pressure fluctuation of the water pump to improve the flow stability of the cooling medium.

[0083] In some embodiments, the first side guide surface 222 further includes a first side guide arc surface 2222, the first side guide arc surface 2222 is connected to the side of the first side guide plane 2221 close to the water inlet 21, the radius of the first side guide arc surface 2222 is r1, and satisfies: r1 ≥ 20mm, wherein the first side guide arc surface 2222 is located between the first side guide plane 2221 close to the water inlet 21 and the water inlet 21, and can guide the cooling medium from the water inlet 21 to the first side guide plane 2221, such as Figure 2 and Figure 4 As shown, the radius of the first side guide arc surface 2222 is set to r1, and r1 can be 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 35mm, etc. The value is not limited to the above and can be flexibly selected.

[0084] Therefore, by setting the above values, the radius of the first side guide arc surface 2222 can be larger, so that the cooling medium resistance can be smaller, and the flow rate can be stable, and the cooling medium recoil phenomenon will not be formed, so that the cooling medium has a good guiding effect. The larger the radius, the more conducive it is to part casting, and the casting cracking problem caused by mold adhesion during the casting process can be reduced. And the structural transition is more natural.

[0085] The radius of the first side guide arc surface 2222 cannot be set too small, otherwise it will cause cooling medium recoil and increase cooling medium resistance, which is not conducive to guiding the cooling medium to the first side guide plane 2221.

[0086] In other embodiments, the second side guide surface 223 further includes a second side guide arc surface 2232, the second side guide arc surface 2232 is connected to the side of the second side guide plane 2231 close to the water inlet 21, the radius of the second side guide arc surface 2232 is r2, and satisfies: r2 ≥ 20 mm, wherein the second side guide arc surface 2232 is located between the second side guide plane 2231 close to the water inlet 21 and the water inlet 21, and can guide the cooling medium from the water inlet 21 to the second side guide plane 2231, such as Figure 2 and Figure 4As shown, the radius of the second side guide arc surface 2232 is set to r2, and r2 can be 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 35mm, etc., and its value is not limited to the above, and can be flexibly selected. In actual design, r2 can be the same as r1 or different.

[0087] The second side guide arc surface 2232 and the first side guide arc surface 2222 are respectively configured to protrude toward the direction close to the water inlet 21 .

[0088] Therefore, by setting the above values, the radius of the second side guide arc surface 2232 can be larger, thereby reducing the resistance of the cooling medium, and the flow rate is stable, and there will be no cooling medium recoil phenomenon, so that the cooling medium has a good guiding effect. The larger the radius, the more conducive it is to part casting, reducing the casting cracking problem caused by mold adhesion during the casting process. And the structural transition is more natural.

[0089] The radius of the second side guide arc surface 2232 cannot be set too small, otherwise it will cause cooling medium recoil and increase cooling medium resistance, which is not conducive to guiding the cooling medium to the second side guide plane 2231.

[0090] In some embodiments, the height difference between the intersection of the tangents at both ends of the first side guide arc surface 2222 and the top surface of the cylinder body 1 is h3, and the height difference between the intersection of the tangents at both ends of the second side guide arc surface 2232 and the top surface of the cylinder body 1 is h4, and satisfies: h3≥1.2h4.

[0091] Specifically, in the up and down directions, the intersection point of the tangents formed by the two ends of the first side guide arc surface 2222 is lower than the intersection point of the tangents formed by the two ends of the second side guide arc surface 2232, so that the height difference between the intersection point of the tangents at the two ends of the first side guide arc surface 2222 and the top surface of the cylinder body 1 can be greater than the height difference between the intersection point of the tangents at the two ends of the second side guide arc surface 2232 and the top surface of the cylinder body 1, that is, h3>h4, and h3 can be taken as: 1.2h4, 1.5h4, 1.7h4, 1.8h4, 2.0h4, etc. Its value is not limited to the above and can be flexibly selected according to the actual space of the cylinder body 1.

[0092] Thus, through the above arrangement, the flow rate of the cooling medium of the upper water channel 22 at the first side guide arc surface 2222 and the first side guide plane 2221 can be greater than the flow rate of the cooling medium at the second side guide arc surface 2232 and the second side guide plane 2231, so as to achieve an even distribution of the water flow rate to the cylinder head water jackets corresponding to the combustion chambers on both sides of the water inlet 21, so as to increase the flow rate of the cooling medium. In addition, when the height difference between the intersection of the tangents at both ends of the first side guide arc surface 2222 and the top surface of the cylinder body 1 is set to be smaller than the height difference between the intersection of the tangents at both ends of the second side guide arc surface 2232 and the top surface of the cylinder body 1, the flow rate of the cooling medium in the cylinder head water jackets corresponding to the multiple combustion chambers will be reduced, affecting the cooling effect of the multiple combustion chambers.

[0093] In other embodiments, the V-shaped wall 221 also includes a bottom arc surface 224 connected between the first side guide surface 222 and the second side guide surface 223, the bottom arc surface 224 is located below the water inlet 21, and the distance between the inner bottom wall of the water inlet 21 and the lower end point of the bottom arc surface 224 is h5, and satisfies: h5 ≥ 3mm.

[0094] Specifically, the V-shaped wall surface 221 further includes a bottom arc surface 224, and the bottom arc surface 224 is connected between the first side guide surface 222 and the second side guide surface 223. Figure 4 As shown, the bottom arc surface 224 is connected between the first side guide arc surface 2222 and the second side guide arc surface 2232 , the bottom arc surface 224 is located below the water inlet 21 , and the bottom arc surface 224 is constructed to bulge in a direction away from the water inlet 21 .

[0095] Among them, there is a spacing between the inner bottom wall of the water inlet 21 and the lower end point of the bottom arc surface 224, and the spacing is h5. The value of h5 can be: 3mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, etc. Its value is not limited to the above and can be flexibly selected according to the actual space of the cylinder body 1.

[0096] Therefore, through the above-mentioned arrangement, the strength between the water inlet 21 and the V-shaped wall 221 can be reliable to ensure the structural strength of the water supply channel 22, and it is convenient to remove the burrs remaining after the water inlet 21 is processed to ensure the smooth structure of the water inlet 21 to reduce the resistance at the water inlet 21.

[0097] It should be noted that, Figure 4As shown, the tangent formed between the bottom arc surface 224 and the first side guide arc surface 2222 is an oblique line, and there is an angle between it and the top surface of the cylinder body 1, and the angle is a4, and satisfies: 60°≤a4≤80°, a4 can be 60°, 65°, 70°, 75°, 80°, etc. The tangent formed between the bottom arc surface 224 and the second side guide arc surface 2232 is an oblique line, and there is an angle between it and the top surface of the cylinder body 1, and the angle is a5, and Satisfying 60°≤a5≤80°, a5 can be taken as: 60°, 65°, 70°, 75°, 80°, etc., wherein a4 and a5 can be the same or different. In this way, the guiding effect of the water inlet 21 to the first side guide surface 222 and the second side guide surface 223 can be reliable, and a4 and a5 cannot be set too large, which will affect the flow rate of the cooling medium, and cannot be greater than 90°. When it is greater than 90°, the casting is prone to undercut and cannot be cast out of the mold.

[0098] The present invention also provides a vehicle.

[0099] The vehicle according to the embodiment of the present invention comprises a cylinder head structure and a cylinder block structure 100 of any one of the above embodiments, wherein the cylinder head structure is installed above the cylinder block structure 100, wherein the cylinder head structure can be detachably connected to the cylinder block structure 100 by bolts and other connecting parts, and the cylinder head structure comprises a cylinder head body and a cylinder head water jacket, wherein the cylinder head body is a supporting and fixing structure of the cylinder head structure, and is used to be connected to the cylinder block structure 100. A cylinder head water jacket is arranged in the cylinder head body, and the cylinder head water jacket is distributed corresponding to a plurality of combustion chambers, and the cylinder block structure 100 comprises a cylinder block body 1 and a cylinder block water jacket 2, and the cylinder block water jacket 2 is connected to a plurality of cylinder head water jackets, so that the cooling medium in the cylinder block water jacket 2 can flow into the plurality of cylinder head water jackets to realize cooling of the plurality of combustion chambers.

[0100] The cylinder water jacket 2 includes a connected water inlet 21 and an upper water channel 22, and the upper water channel 22 is constructed as a V-shaped structure, so that the cooling medium flowing into the upper water channel 22 from the water inlet 21 can flow along both sides of the V-shaped wall 221 to guide the cylinder head water jackets corresponding to the multiple combustion chambers to cool the multiple combustion chambers, and the upper water channel 22 is integrated in the cylinder body 1, which can shorten the cooling medium path between the upper water channel 22 and the cylinder head water jacket, reduce the setting of external pipelines, thereby reducing the problem of water pump pressure loss, and there is no need to build an independent water supply channel in the cylinder head. The overall structure is simple and the casting processability is good. The cylinder structure 100 is small in size and the layout space is small, which reduces the number of parts and costs.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0102] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cylinder structure, characterized in that: include: A cylinder body, wherein the cylinder body is provided with a plurality of combustion chambers distributed along a first direction; A cylinder water jacket, wherein the cylinder water jacket is provided with a water inlet and an upper water channel, wherein the water inlet is connected to the bottom wall of the upper water channel, wherein the upper side of the upper water channel is open and is suitable for being connected to the cylinder head water jackets corresponding to the plurality of combustion chambers, and wherein the bottom wall of the upper water channel is constructed as a V-shaped wall surface open upward relative to the water inlet so as to guide flow toward the cylinder head water jacket.

2. The cylinder structure according to claim 1, characterized in that: The V-shaped wall includes a first side guide surface and a second side guide surface distributed along the first direction, the water inlet is located between the first side guide surface and the second side guide surface, the first side guide surface and the second side guide surface respectively correspond to the position of at least one of the combustion chambers, and the first side guide surface and the second side guide surface are both constructed to extend from bottom to top in a direction away from the water inlet.

3. The cylinder structure according to claim 2, characterized in that: The number of combustion chambers corresponding to the first side guide surface is greater than the number of combustion chambers corresponding to the second side guide surface.

4. The cylinder structure according to claim 3, characterized in that: The first side guide surface includes at least two first side guide planes distributed along the first direction, the first side guide planes are configured to extend obliquely from bottom to top in a direction away from the water inlet, and the at least two first side guide planes are distributed in a one-to-one correspondence with the at least two combustion chambers; And / or, the second side guide surface includes at least one second side guide plane distributed along the first direction, the second side guide plane is constructed to extend obliquely from bottom to top in a direction away from the water inlet, and at least one second side guide plane is distributed one-to-one with at least one combustion chamber.

5. The cylinder structure according to claim 3, characterized in that: The included angles between two adjacent first side guide planes and the top surface of the cylinder body are different, and the included angle between at least two of the first side guide planes and the top surface of the cylinder body gradually decreases in a direction away from the water inlet.

6. The cylinder structure according to claim 4, characterized in that: There are two first side guide planes, and the angle between the one of the two first side guide planes close to the water inlet and the top surface of the cylinder body is a1, and the angle between the one far from the water inlet and the top surface of the cylinder body is a2. There is one second side guide plane and the angle between it and the top surface of the cylinder body is a3, and it satisfies: 3°≤a2≤a3≤a1≤30°.

7. The cylinder structure according to claim 6, characterized in that: Among two adjacent first side guide planes, the height difference between the middle of the one far from the water inlet and the top surface of the cylinder body is h1, and the height difference between the middle of the one close to the water inlet and the top surface of the cylinder body is h2, and it satisfies: h1<0.8h2.

8. The cylinder structure according to claim 4, characterized in that: The first side guide surface further includes a first side guide arc surface, the first side guide arc surface is connected to a side of the first side guide plane close to the water inlet, the radius of the first side guide arc surface is r1, and satisfies: r1≥20mm; And / or, the second side guide surface also includes a second side guide arc surface, the second side guide arc surface is connected to the side of the second side guide plane close to the water inlet, the radius of the second side guide arc surface is r2, and satisfies: r2≥20mm.

9. The cylinder structure according to claim 8, characterized in that: The height difference between the intersection of the tangents at both ends of the first side guide arc surface and the top surface of the cylinder body is h3, and the height difference between the intersection of the tangents at both ends of the second side guide arc surface and the top surface of the cylinder body is h4, and it satisfies: h3≥1.2h4; And / or, the V-shaped wall surface also includes a bottom arc surface connected between the first side guide surface and the second side guide surface, the bottom arc surface is located below the water inlet, the distance between the inner bottom wall of the water inlet and the lower end point of the bottom arc surface is h5, and satisfies: h5≥3mm.

10. A vehicle, characterized in that: It comprises a cylinder head structure and the cylinder body structure according to any one of claims 1 to 9, wherein the cylinder head structure is installed above the cylinder body structure.

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