Cylinder structure and vehicle

Abstract

The application discloses a cylinder structure and a vehicle, and relates to the technical field of cylinder structures, and particularly relates to a cylinder structure and a vehicle.The cylinder structure comprises a cylinder body provided with a plurality of combustion chambers distributed along a first direction; a cylinder water jacket provided with a water inlet and an upper water channel, the water inlet is communicated with the bottom wall of the upper water channel, the upper side of the upper water channel is open and is adapted to be communicated with a plurality of cylinder head water jackets corresponding to the combustion chambers, and the bottom wall of the upper water channel is configured as a V-shaped wall surface which is open upward relative to the water inlet to guide the flow to the cylinder head water jacket. The cylinder structure of the application realizes reasonable distribution of the flow of the cooling medium through the V-shaped wall surface, and a certain amount of cooling medium can be stored in the upper water channel, the pressure loss of the water pump is reduced, the upper water channel is integrated in the cylinder body, the setting of external pipelines can be reduced, the problem of the pressure loss of the water pump caused by the external pipelines is reduced, the overall structure is simple, and the casting process is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engines, in particular to a cylinder body structure and a vehicle with the same. BACKGROUND

[0002] With the increasingly stringent regulations on vehicle emissions, hybrid vehicles gradually replace traditional fuel vehicles, and need to have higher combustion thermal efficiency compared to engines. The performance of the internal cooling system of the engine affects the efficiency and power output of the engine.

[0003] In the prior art, in order to meet the needs of engine waterway arrangement, some through the water pump arranged in the cylinder body, and then connected with the cylinder head water jacket through the external water supply channel, the water supply channel is long, the water pump pressure loss is large, and the pipeline arrangement is different for different vehicle models, and the universality is low; some directly integrate the water pump in the cylinder head, and need to embed independent water supply channel, which makes the water supply channel occupy large layout space and is difficult to arrange, causing the cylinder head casting difficulty, increasing the manufacturing cost, thus the above-mentioned schemes all cause high cost of engine cooling waterway arrangement, and there is room for improvement. SUMMARY

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

[0005] The cylinder body structure according to the embodiment of the present application comprises: a cylinder body main body provided with a plurality of combustion chambers distributed along a first direction; a cylinder water jacket provided with a water inlet and an upper water channel, the water inlet being communicated with the bottom wall of the upper water channel, the upper side of the upper water channel being open and adapted to be communicated with a plurality of cylinder head water jackets corresponding to the combustion chambers, and the bottom wall of the upper water channel being configured as a V-shaped wall surface open upward relative to the water inlet to guide the flow to the cylinder head water jacket.

[0006] According to the cylinder structure of the embodiment of the present application, by setting the bottom wall of the upper water channel as a V-shaped wall surface that is 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 jacket corresponding to the plurality of combustion chambers to cool the plurality of combustion chambers. The V-shaped wall surface can realize reasonable distribution of the cooling medium flow, and a certain amount of cooling medium can be stored in the upper water channel to reduce the water pump pressure loss. 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, and thus reduce the water pump pressure loss. In addition, the independent water supply channel does not need to be built in the cylinder head, the overall structure is simple, the casting process is good, the cylinder structure size is small, the layout space is small, and the number of parts and cost are reduced.

[0007] According to the cylinder structure of some embodiments of the present application, the V-shaped wall surface includes a first side flow guide surface and a second side flow guide surface distributed along the first direction, the water inlet is located between the first side flow guide surface and the second side flow guide surface, the first side flow guide surface and the second side flow guide surface correspond to the positions of at least one combustion chamber respectively, and the first side flow guide surface and the second side flow guide surface are both configured 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 application, the number of combustion chambers corresponding to the first side flow guide surface is greater than the number of combustion chambers corresponding to the second side flow guide surface.

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

[0010] And / or, the second side flow guide surface includes at least one second side flow guide plane distributed along the first direction, the second side flow guide plane is configured to extend from bottom to top in a direction away from the water inlet, and at least one second side flow 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 application, the included angles between adjacent two first side flow guide planes and the top surface of the cylinder body are different, and the included angles between at least two first side flow guide planes and the top surface of the cylinder body gradually decrease in a direction away from the water inlet.

[0012] According to the cylinder structure of some embodiments of the present application, the first side flow guide plane is two, the included angle between one of the two first side flow guide planes close to the water inlet and the top surface of the cylinder body is a1, the included angle between one of the two first side flow guide planes far from the water inlet and the top surface of the cylinder body is a2, the second side flow guide plane is one, the included angle between the second side flow guide plane and the top surface of the cylinder body is a3, and the following conditions are met: 3°≤a2≤a3≤a1≤30°.

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

[0014] According to the cylinder structure of some embodiments of the present application, the first side flow guide surface further comprises a first side flow guide arc surface, the first side flow guide arc surface is connected to one side of the first side flow guide plane close to the water inlet, the radius of the first side flow guide arc surface is r1, and the following conditions are met: r1≥20mm.

[0015] And / or, the second side flow guide surface further comprises a second side flow guide arc surface, the second side flow guide arc surface is connected to one side of the second side flow guide plane close to the water inlet, the radius of the second side flow guide arc surface is r2, and the following conditions are met: r2≥20mm.

[0016] According to the cylinder structure of some embodiments of the present application, the height difference between the intersection of the tangent lines of the two ends of the first side flow guide arc surface and the top surface of the cylinder body is h3, the height difference between the intersection of the tangent lines of the two ends of the second side flow guide arc surface and the top surface of the cylinder body is h4, and the following conditions are met: h3≥1.2h4.

[0017] And / or, the V-shaped wall surface further comprises a bottom arc surface connected between the first side flow guide surface and the second side flow 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 the following conditions are met: h5≥3mm.

[0018] The present application also proposes a vehicle.

[0019] According to the vehicle of the embodiments of the present application, the vehicle comprises a cylinder head structure and the cylinder structure of any one of the above embodiments, and the cylinder head structure is installed above the cylinder structure.

[0020] The vehicle and the cylinder structure described above have the same advantages as the prior art, which will not be described here.

[0021] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attendant drawings or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

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

[0024] Figure 2 is Figure 1 is a sectional view at A-A in

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

[0026] Figure 4 is a schematic view of a cylinder jacket of a cylinder structure according to an embodiment of the present application.

[0027] REFERENCE NUMERALS:

[0028] cylinder structure 100,

[0029] cylinder main body 1,

[0030] cylinder jacket 2, water inlet 21, upper water passage 22, V-shaped wall surface 221, first side flow guide surface 222, first side flow guide flat surface 2221, first side flow guide curved surface 2222, second side flow guide surface 223, second side flow guide flat surface 2231, second side flow guide curved surface 2232, bottom curved surface 224. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the attached drawings. The embodiments of the present application described below are examples and are not intended to limit the present application.

[0032] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0033] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e. the X direction; the left-right direction is the transverse direction of the vehicle, i.e. the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e. the Z direction.

[0035] Reference will now be made to Figures 1-4 The cylinder structure 100 according to an embodiment of the present application is described below. By providing the upper water passage 22 in a V-shaped structure, the cooling medium flowing into the upper water passage 22 from the water inlet 21 can flow along both sides of the V-shaped wall surface 221 to guide the cooling medium to the cylinder head water jacket corresponding to the plurality of combustion chambers, so as to cool the plurality of combustion chambers. The upper water passage 22 is integrated in the cylinder body 1, which can shorten the cooling medium path between the upper water passage 22 and the cylinder head water jacket, reduce the setting of external pipelines, and thus reduce the problem of water pump pressure loss. In addition, the independent water supply passage does not need to be built-in in the cylinder head, the overall structure is simple, the casting process is good, the cylinder structure 100 has small size and small layout space, and the number of parts and cost are reduced.

[0036] As shown in FIG. 1, the cylinder structure 100 according to an embodiment of the present application comprises a cylinder body 1 and a cylinder water jacket 2. Figures 1-4

[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 and 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 portions distributed along the first direction are also formed in the cylinder body 1. Each cylinder portion is correspondingly provided with a piston, and each cylinder portion is generally a cylindrical space in which the piston reciprocates. When each piston runs to the highest point of the cylinder portion, the space above the top of the piston is a combustion chamber, which is used for the combustion and energy release of gasoline, diesel and other fuels. Among them, the plurality of cylinder portions can be uniformly and evenly distributed along the first direction, and the plurality of combustion chambers can be uniformly and evenly distributed along the first direction.

[0038] By providing a plurality of combustion chambers, these combustion chambers can work independently but cooperatively to ensure that the engine can continuously and stably output power to meet various operating requirements.

[0039] And the cylinder portion can be two, three, four, etc., and the combustion chamber can also be two, three, four, etc.

[0040] Generally, the first direction can be a horizontal direction, which includes a front-rear direction and a left-right direction. Therefore, the first direction can be a front-rear direction or a left-right direction.

[0041] Specifically, the cylinder water jacket 2 is arranged in the cylinder body 1, and the space of the cylinder body 1 is used to arrange the cylinder water jacket 2. The cylinder water jacket 2 circulates cooling medium, and can be used to provide cooling medium to the cylinder head water jacket. The cylinder water jacket 2 is provided with a water inlet 21 for the inflow of cooling medium. As shown in Figure 3 The water inlet 21 can penetrate the side of the cylinder body 1 along the second direction and open outward. The second direction intersects the first direction. The water inlet 21 can be connected to a water pump to send external cooling medium into the upper water channel 22. The cylinder water jacket 2 is provided with an upper water channel 22, which 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 at the bottom of the upper water channel 22, so that the cooling medium can flow into the upper water channel 22 from the water inlet 21 at the bottom. The water inlet 21 is arranged at the bottom 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. The upper water channel 22 can accommodate a certain amount of cooling medium to reduce the pressure loss of the water pump.

[0042] The upper water channel 22 is open on the upper side and is in communication with the cylinder head water jackets corresponding to the plurality of combustion chambers, wherein each combustion chamber is provided with a corresponding cylinder head water jacket for circulating cooling medium to respectively dissipate heat from the plurality of combustion chambers. That is, the upper water channel 22 is located on the lower side of the combustion chamber, and the upper water channel 22 is open upward, and the open side of the upper water channel 22 can be in communication with the cylinder head water jackets corresponding to the plurality of combustion chambers in the up-down direction, so that the cooling medium can flow into the cylinder head water jackets of each combustion chamber to cool the plurality of combustion chambers.

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

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

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

[0046] At the same time, it should be noted that hybrid vehicles gradually replace traditional fuel vehicles, and relative to engines, they need to have higher combustion thermal efficiency. The water circulation of the internal cooling system of the engine is adjusted from being supplied from the cylinder body water cavity to the cylinder head water cavity to being supplied from the cylinder head water cavity to the cylinder body water cavity, which realizes that cold water first passes through the cylinder head, and the operating temperature of the cylinder head is reduced by about 20℃. High temperature can cause thermal expansion of internal components of the engine and degradation of material performance, affecting the efficiency and power output of the engine; reducing the combustion temperature helps to reduce harmful substances such as nitrogen oxides (NOx) and particulate matter (PM) generated during the combustion process, which helps 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 from the cylinder head water jacket to the cylinder body water jacket realizes rapid warming of the engine block during cold start, reduces heat loss during the combustion process, and thus improves thermal efficiency.

[0047] And in the related art, in order to meet the needs of engine water route arrangement, some through the water pump is arranged in the cylinder body, and then connected with the cylinder head water jacket through the external water supply channel, the engine arrangement is simple, but the water supply channel needs external arrangement, 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, the different models need to be designed with different pipeline for the influence of the assembly space of the surrounding parts, the universality is low; some directly integrate the water pump on the cylinder head, the cylinder head is provided with an intake manifold on the intake side and an exhaust manifold on the exhaust side, when the water pump is integrated on the cylinder head, the cylinder head needs to be widened, the overall width of the engine is increased, the space occupied by the engine compartment is large, and the structure is compact; and a separate water supply channel needs to be arranged, the water supply channel structure is complex and needs to be formed by casting, causing the problem of difficult casting.

[0048] According to the cylinder body structure 100, the bottom wall of the upper water channel 22 is configured as a V-shaped wall surface 221 that is open upward relative to the water inlet 21, so that the cooling medium flowing into the upper water channel 22 from the water inlet 21 is guided along the two sides of the V-shaped wall surface 221, respectively, so that the cooling medium fills the upper water channel 22 in the first direction, and then the cooling medium flows into the cylinder head water jacket corresponding to the plurality of combustion chambers from the open side of the upper water channel 22 at the same time, so as to cool the plurality of combustion chambers, and the cooling medium flows into the cylinder body water jacket to continue cooling the cylinder body, and finally flows out of the cylinder body water jacket. In this way, the cylinder head and the cylinder body main body 1 are cooled in a circulating manner, the temperature of each component in the engine can be maintained stable, and the efficiency and power output requirements of the engine can be met.

[0049] And the cylinder body water jacket is arranged in parallel with the upper water channel 22, and the cooling medium enters the upper water channel 22 through the water inlet and then flows directly to the cylinder head water jacket, so that the plurality of combustion chambers can be cooled by the low-temperature cooling medium, and the V-shaped upper water channel 22 can realize reasonable distribution of the cooling medium flow, and a certain amount of cooling medium can be stored in the upper water channel 22 to reduce the water pump pressure loss. The upper water channel 22 is integrated in the cylinder body main body 1, so that the cooling medium path between the upper water channel 22 and the cylinder head water jacket is shortened, and the cylinder head water jacket can be supplied with water by using the structure of the cylinder body main body 1, thereby reducing the setting of external pipelines, thereby reducing the water pump pressure loss, and the water pump does not need to be integrated in the cylinder head, and a separate water supply channel does not need to be built-in in the cylinder head. The overall structure of the cylinder head is simpler, the problem of large space arrangement and difficult arrangement of the water supply channel in the cylinder head is solved, the overall structure is simple, the casting process is good, the overall size of the cylinder body structure 100 is smaller, the layout is compact, the arrangement space of the vehicle is smaller, the number of parts and the cost are reduced, and the use effect is better. The built-in upper water channel 22 in the cylinder body main body 1 can be applied to various vehicle models, has good cooling effect, low cooling cost and strong universality.

[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 after flowing into 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 may correspond to the positions of two or three combustion chambers. The first side guide surface 222 is configured 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. The second side guide surface 223 is configured to match the number of combustion chambers, thus adapting to different types of engines.

[0053] The first side guide surface 222 and the second side guide surface 223 are both 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 realize the guidance of 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 in 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 in 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, the cooling medium can be diverted in two directions, so that 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 on 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 configured as inclined structures respectively.

[0057] In some embodiments, the number of combustion chambers corresponding to the first side flow guide surface 222 is greater than the number of combustion chambers corresponding to the second side flow guide surface 223, that is, the upper water channel 22 needs more cooling medium on the side of the first side flow guide surface 222 to cool the combustion chambers, and the upper water channel 22 needs less cooling medium on the side of the second side flow guide surface 223 to cool the combustion chambers, so that the cooling of each combustion chamber is more stable and reliable.

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

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

[0060] And the water inlet 21 can also be arranged without corresponding to the combustion chamber, and the arrangement mode is various and can be flexibly selected.

[0061] In addition, the number of combustion chambers corresponding to the first side flow guide surface 222 can be equal to the number of combustion chambers corresponding to the second side flow guide surface 223, that is, the upper water channel 22 of the V-shaped structure is symmetrically distributed along the first direction. In addition, the number of combustion chambers corresponding to the first side flow guide surface 222 can be less than the number of combustion chambers corresponding to the second side flow guide surface 223, that is, the upper water channel 22 of the V-shaped structure is asymmetrically distributed along the first direction. The arrangement mode is various and can be flexibly selected according to actual needs.

[0062] In some embodiments, the first side flow guide surface 222 includes at least two first side flow guide planes 2221 distributed along the first direction, and the first side flow guide plane 2221 is configured to extend obliquely from below to above in a direction away from the water inlet 21. The at least two first side flow guide planes 2221 are one-to-one corresponding to the at least two combustion chambers.

[0063] Specifically, the first side flow guide surface 222 comprises at least two first side flow guide planes 2221 distributed along the first direction, capable of guiding the cooling medium along the first direction, and the at least two first side flow guide planes 2221 are distributed in one-to-one correspondence with the at least two combustion chambers, so that the cooling medium is guided through the at least two first side flow guide planes 2221 into the cylinder water jacket 2 of the corresponding combustion chamber to cool the at least two combustion chambers respectively, and by arranging the first side flow guide planes 2221 in correspondence with the combustion chambers, the cooling medium can cool the combustion chambers correspondingly, improving the accuracy and reliability of the cooling medium in cooling the combustion chambers, so as to well reduce the temperature of the combustion chambers.

[0064] The number of the first side flow guide planes 2221 matches the number of the combustion chambers, and the first side flow guide planes 2221 can be two, three, four, etc. In this embodiment, the second side flow guide planes 2231 are two.

[0065] As shown in FIGS. 1, 2 and 3, the first side flow guide surface 222 comprises at least two first side flow guide planes 2221 distributed along the first direction, capable of guiding the cooling medium along the first direction, and the at least two first side flow guide planes 2221 are distributed in one-to-one correspondence with the at least two combustion chambers. Figure 2 Figure 4 As shown in FIGS. 1, 2 and 3, the first side flow guide surface 222 comprises at least two first side flow guide planes 2221 distributed along the first direction, capable of guiding the cooling medium along the first direction, and the at least two first side flow guide planes 2221 are distributed in one-to-one correspondence with the at least two combustion chambers.

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

[0067] Specifically, the first side flow guide surface 222 comprises at least one second side flow guide plane 2231 distributed along the first direction, capable of guiding the cooling medium along the first direction, and the at least one second side flow guide plane 2231 is distributed in one-to-one correspondence with the at least one combustion chamber, so that the cooling medium is guided through the at least one second side flow guide plane 2231 into the cylinder water jacket 2 of the corresponding combustion chamber to cool the at least one combustion chamber, and by arranging the second side flow guide planes 2231 in correspondence with the combustion chambers, the cooling medium can cool the combustion chambers correspondingly, improving the accuracy and reliability of the cooling medium in cooling the combustion chambers, so as to well reduce the temperature of the combustion chambers.​

[0068] The number of the second side flow guide planes 2231 matches the number of the combustion chambers. The second side flow guide planes 2231 can be one or two, and the number of the second side flow guide planes 2231 is less than the number of the first side flow guide planes 2221. In this embodiment, the second side flow guide planes 2231 are one.

[0069] As shown in FIGS. 5 and 6, the at least one second side flow guide plane 2231 can be configured as an inclined structure and extends from bottom to top in a direction away from the water inlet 21. In this way, the cooling medium entering from the water inlet 21 can flow along the second side flow guide plane 2231 from bottom to top, which can improve the flow guiding effect on the cooling medium. The first side flow guide plane 2221 corresponding to the combustion chamber is configured as an inclined structure, which can increase the flow rate of the cooling medium and improve the cooling efficiency of the combustion chamber. Moreover, the structure is simple and convenient to process. Figure 2 Figure 4 In some embodiments, the angles between the adjacent two first side flow guide planes 2221 and the top surface of the cylinder body 1 are different, and the angles between the at least two first side flow guide planes 2221 and the top surface of the cylinder body 1 gradually decrease in a direction away from the water inlet 21.

[0070] Specifically, the first side flow guide plane 2221 and the top surface of the cylinder body 1 form an angle, and the angles between the adjacent two first side flow guide planes 2221 and the top surface of the cylinder body 1 are different, which can achieve different flow guiding effects. The angle between the first side flow guide plane 2221 close to the water inlet 21 and the top surface of the cylinder body 1 is set to be large, that is, the inclination angle of the first side flow guide plane 2221 close to the water inlet 21 is set to be large. In this way, the flow guiding angle of the first side flow guide plane 2221 close to the water inlet 21 to the cooling medium is larger, which is beneficial to the flow of more cooling medium along the first side flow guide plane 2221 and can achieve a certain flow guiding effect.

[0071] Moreover, the angle between the first side flow guide plane 2221 away from the water inlet 21 and the top surface of the cylinder body 1 is set to be small, that is, the inclination angle of the first side flow guide plane 2221 away from the water inlet 21 is set to be small. In this way, the flow guiding angle of the first side flow guide plane 2221 away from the water inlet 21 to the cooling medium is smaller, and the inclination angle of the first side flow guide plane 2221 away from the water inlet 21 is small, which can make the cooling medium flow along the first side flow guide plane 2221 with a small inclination angle and achieve a certain flow guiding effect.

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

[0073] ​And, the included angle between the at least two first side flow guide planes 2221 and the top surface of the cylinder body 1 gradually decreases in the direction away from the water inlet 21, which can make the cross-sectional area of the upper water passage 22 gradually decrease away from the water inlet 21, and can improve the flow rate of the cooling medium, and further can improve the flow speed of the cooling medium to the cylinder head water jacket of the corresponding combustion chamber through the at least two first side flow guide planes 2221, so as to improve the cooling efficiency of the cooling medium to the at least two combustion chambers. And, the cross-sectional area of the upper water passage 22 gradually decreases away from the water inlet 21, which can reduce the setting space of the upper water passage 22 in the cylinder body 1, reduce the possibility of interference with other structures, and improve the integration of the upper water passage 22 and the cylinder body 1.

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

[0075] Specifically, in the present embodiment, as shown in Figure 1 The cylinder structure 100 is provided with four cylinders, and the corresponding combustion chambers are four. The water inlet 21 is arranged at the position corresponding to the second combustion chamber. The first side flow guide plane 2221 is two, and the two first side flow guide planes 2221 are arranged corresponding to the two combustion chambers. The second side flow guide plane 2231 is one, and the one second side flow guide plane 2231 is arranged corresponding to one combustion chamber, so as to form the upper water passage 22 which is asymmetric along the first direction.

[0076] As shown in Figure 2 The included angle between one of the first side flow guide planes 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 the value is not limited to the above, and can be flexibly selected. The included angle between one of the first side flow guide planes 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 the value is not limited to the above, and can be flexibly selected. The included angle between the second side flow guide plane 2231 and the top surface of the cylinder body 1 is a3, and a3 can be 3°, 5°, 7°, 10°, 12°, 15°, 18°, 20°, 25°, 30°, etc., and the value is not limited to the above, and can be flexibly selected.

[0077] In actual design, the value of a2 needs to be set to be less than a1, that is, a2≤a1, so that the angle between the two first side flow guide planes 2221 and the top surface of the cylinder body 1 gradually decreases in the direction away from the water inlet 21, so that the cross-sectional area of the upper water channel 22 gradually decreases away from the water inlet 21, which can improve the flow rate of the cooling medium, and the setting of a3≤a1 can make the flow rate of the water inlet 21 close to the second side flow guide plane 2231 smaller than the flow rate of the water inlet 21 close to the first side flow guide plane 2221. In this way, the overall flow of the cooling medium at the at least two first side flow guide planes 2221 and the one second side flow guide plane 2231 can be evenly distributed, so that the flow into the cylinder head water jacket corresponding to the plurality of combustion chambers is uniform, thereby improving the cooling uniformity of the plurality of combustion chambers.

[0078] 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 upper water channel 22 will be too small and cannot store a certain amount of cooling medium, and the angles of a1, a2 and a3 cannot be set too large, otherwise the cross-sectional area of the overall upper water channel 22 will be too large, which may cause interference between the water pump and the surrounding parts, which is not conducive to the miniaturization of the engine.

[0079] In some embodiments, among the two adjacent first side flow guide planes 2221, the height difference between the middle of one away from the water inlet 21 and the top surface of the cylinder body 1 is h1, and the height difference between the middle of 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 of one away from the water inlet 21 and the top surface of the cylinder body 1, which is h1, so that the upper water channel 22 forms a containing space between the first side flow guide plane 2221 away from the water inlet 21 and the top surface of the cylinder body 1 for containing an appropriate amount of cooling medium, and there is a height difference between the middle of one close to the water inlet 21 and the top surface of the cylinder body 1, which is h2, so that the upper water channel 22 forms a containing space between the first side flow guide plane 2221 close to the water inlet 21 and the top surface of the cylinder body 1 for containing an appropriate amount of cooling medium.

[0081] Wherein, h1<h2, and h1 can be 0.75h2, 0.70h2, 0.65h2, 0.60h2, 0.55h2, 0.50h2, etc., so that the height difference between the middle of the first side flow guide plane 2221 gradually away from the water inlet 21 and the top surface of the cylinder body 1 decreases, that is, the cross-sectional area of the upper water channel 22 gradually away from the water inlet 21 decreases, which can improve the flow rate of the cooling medium, so that the cooling medium flow rate 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] Meanwhile, it should be noted that the height difference h1 between the middle of the water inlet 21 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 of the second side flow guide plane 2231 and the top surface of the cylinder body 1, which is set as h6, and h6 should be greater than or equal to 10 mm, so that a certain amount of cooling medium can be stored in the upper water channel 22, which can adapt to the water pressure instability caused by the water pump pressure fluctuation, so as to improve the flow stability of the cooling medium.

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

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

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

[0086] In other embodiments, the second side flow guide surface 223 further comprises a second side flow guide arc surface 2232 connected to the second side flow guide plane 2231 near the water inlet 21, and the radius of the second side flow guide arc surface 2232 is r2, and satisfies: r2≥20mm, wherein the second side flow guide arc surface 2232 is located between the second side flow guide plane 2231 near the water inlet 21 and the water inlet 21, and can guide the cooling medium from the water inlet 21 to the second side flow guide plane 2231, as shown in Figure 2 and Figure 4As shown, the radius of the second side flow guide arc surface 2232 is r2, and r2 can be 20 mm, 22 mm, 25 mm, 28 mm, 30 mm, 32 mm, 35 mm, etc. The 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 flow guide arc surface 2232 and the first side flow guide arc surface 2222 are respectively configured to protrude towards the direction close to the water inlet 21.

[0088] Therefore, by setting the above value, the radius of the second side flow guide arc surface 2232 can be larger, thereby the cooling medium resistance can be smaller, the flow rate is stable, and the cooling medium backflow phenomenon is not formed, so that the cooling medium flow guide effect is good. The larger the radius, the more conducive to part casting, and the casting cracking problem caused by mold adhesion in the casting process is reduced. And the structure transition is more natural.

[0089] The radius of the second side flow guide arc surface 2232 cannot be too small, otherwise the cooling medium backflow will occur, the cooling medium resistance will increase, and the cooling medium flow guide to the second side flow guide plane 2231 will be affected.

[0090] In some embodiments, the height difference between the intersection of the tangent lines at the two ends of the first side flow guide arc surface 2222 and the top surface of the cylinder body 1 is h3, and the height difference between the intersection of the tangent lines at the two ends of the second side flow guide arc surface 2232 and the top surface of the cylinder body 1 is h4, and h3≥1.2h4 is satisfied.

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

[0092] Therefore, by the above arrangement, the flow rate of the cooling medium at the first side flow guiding arc surface 2222 and the first side flow guiding plane 2221 of the upper water passage 22 is greater than the flow rate of the cooling medium at the second side flow guiding arc surface 2232 and the second side flow guiding plane 2231, so as to achieve the average distribution of the water flow to the cylinder head water jackets corresponding to the combustion chambers on both sides of the water inlet 21 respectively, so as to improve the flow rate of the cooling medium. In addition, when the height difference between the intersection of the tangents of the two ends of the first side flow guiding arc surface 2222 and the top surface of the cylinder body 1 is less than the height difference between the intersection of the tangents of the two ends of the second side flow guiding 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 plurality of combustion chambers will be reduced, which will affect the cooling effect of the plurality of combustion chambers.

[0093] In other embodiments, the V-shaped wall surface 221 further comprises a bottom arc surface 224 connected between the first side flow guiding surface 222 and the second side flow guiding 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 h5≥3mm is satisfied.

[0094] Specifically, the V-shaped wall surface 221 further comprises a bottom arc surface 224 connected between the first side flow guiding surface 222 and the second side flow guiding surface 223, as shown in Figure 4 The bottom arc surface 224 is connected between the first side flow guiding arc surface 2222 and the second side flow guiding arc surface 2232, the bottom arc surface 224 is located below the water inlet 21, and the bottom arc surface 224 is configured to protrude away from the water inlet 21.

[0095] 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 h5 can be 3mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, etc. The value is not limited to the above, and can be flexibly selected according to the actual space of the cylinder body 1.

[0096] Therefore, by the above arrangement, the strength between the water inlet 21 and the V-shaped wall surface 221 is reliable, so as to ensure the structural strength of the upper water passage 22, and facilitate the removal of residual burrs after the processing of the water inlet 21, so as to ensure the flatness of the structure of the water inlet 21, so as to reduce the resistance at the water inlet 21.

[0097] It should be noted that, as shown in Figure 4As shown, the tangent line formed between the bottom arc surface 224 and the first side flow guide arc surface 2222 is an oblique line, which has an included angle with the top surface of the cylinder body main body 1, and the included angle is a4, and satisfies: 60°≤a4≤80°, a4 can take values: 60°, 65°, 70°, 75°, 80°, etc., the tangent line formed between the bottom arc surface 224 and the second side flow guide arc surface 2232 is an oblique line, which has an included angle with the top surface of the cylinder body main body 1, and the included angle is a5, and satisfies 60°≤a5≤80°, a5 can take values: 60°, 65°, 70°, 75°, 80°, etc., wherein a4 and a5 can be the same or different, so that the water inlet 21 can reliably guide the flow to the first side flow guide surface 222 and the second side flow guide surface 223, and a4 and a5 cannot be set too large, too large will affect the flow rate of the cooling medium, and cannot be greater than 90°, greater than 90°, casting is easy to form reverse buckling and cannot be cast out of mold.

[0098] The application further provides a vehicle.

[0099] The vehicle according to the embodiment of the application comprises a cylinder head structure and the cylinder body structure 100 of any one of the above embodiments, the cylinder head structure is installed above the cylinder body structure 100, wherein the cylinder head structure is detachably connected to the cylinder body structure 100 through bolts or other connectors, and the cylinder head structure comprises a cylinder head body and a cylinder head water jacket, the cylinder head body is a support and fixing structure of the cylinder head structure, used for connecting with the cylinder body structure 100. The cylinder head body is provided with the cylinder head water jacket, the cylinder head water jacket is correspondingly distributed with the plurality of combustion chambers, and the cylinder body structure 100 comprises a cylinder body main body 1 and a cylinder body water jacket 2, the cylinder body water jacket 2 is communicated with the plurality of cylinder head water jackets, so that the cooling medium in the cylinder body water jacket 2 flows into the plurality of cylinder head water jackets to cool the plurality of combustion chambers.

[0100] The cylinder body water jacket 2 comprises the water inlet 21 and the upper water channel 22 connected with each other, and the upper water channel 22 is configured in a V-shaped structure, so that the cooling medium flowing into the upper water channel 22 from the water inlet 21 flows along the two sides of the V-shaped wall surface 221 to guide the flow to the cylinder head water jackets corresponding to the plurality of combustion chambers to cool the plurality of combustion chambers, and the upper water channel 22 is integrated in the cylinder body main body 1, so that the cooling medium path between the upper water channel 22 and the cylinder head water jacket is shortened, the setting of external pipelines is reduced, the problem of water pump pressure loss is reduced, and an independent water supply channel does not need to be built in the cylinder head, the overall structure is simple, the casting process is good, the cylinder body structure 100 is small in size and small in layout space, and the number of parts and cost are reduced.

[0101] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0102] Although embodiments of the application have been shown and described, it will be appreciated that those skilled in the art can make various changes, modifications, substitutions and alterations thereto without departing from the principles and scope of the application, which are 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, the cylinder water jacket being provided with a water inlet and an upper water channel, the water inlet being communicated with a bottom wall of the upper water channel, the upper side of the upper water channel being open and adapted to communicate with cylinder head water jackets corresponding to the plurality of combustion chambers, the bottom wall of the upper water channel being configured as a V-shaped wall surface open upward relative to the water inlet to guide water toward the cylinder head water jacket; 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 configured to extend from bottom to top in a direction away from the water inlet; The first side guide surface includes at least two first side guide planes distributed along the first direction, the first side guide planes being 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 being 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 in a one-to-one correspondence with at least one combustion chamber.

2. The cylinder structure according to claim 1, 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.

3. The cylinder structure according to claim 2, 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.

4. The cylinder structure according to claim 1, characterized in that: There are two first side guide planes, and the angle between the one close to the water inlet and the top surface of the cylinder body is a1, and the angle between the one away 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 the second side guide plane and the top surface of the cylinder body is a3, and the following conditions are satisfied: 3°≤a2≤a3≤a1≤30°.

5. The cylinder structure according to claim 4, characterized in that: Among two adjacent first side guide planes, the height difference between the middle part of the one away 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.

6. The cylinder structure according to claim 1, 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 ≥ 20 mm; 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.

7. The cylinder structure according to claim 6, characterized in that: A height difference between an intersection of tangents at both ends of the first side guide arc surface and the top surface of the cylinder body is h3, and a height difference between an intersection of 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; 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, and 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.

8. A vehicle, characterized in that: It comprises a cylinder head structure and the cylinder body structure according to any one of claims 1 to 7, wherein the cylinder head structure is installed above the cylinder body structure.

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