Engine and vehicle

Abstract

The application relates to the engine technical field, and provides an engine and a vehicle.The engine comprises a cylinder body and a cylinder cover, the cylinder body is provided with an air intake side water jacket and an exhaust side water jacket in opposite positions; a cylinder cover water jacket of the cylinder cover is communicated with the air intake side water jacket and the exhaust side water jacket to form a cooling liquid flow path; and a communicating water jacket is arranged between the air intake side water jacket and the exhaust side water jacket.According to the engine provided by the application, the exhaust side water jacket and the air intake side water jacket in the cooling liquid flow path are communicated, the flowability of the cooling liquid can be improved, flow dead zones can be avoided, exhaust in the water jacket is facilitated, the probability of local overheating can be reduced, and the working stability and reliability of the engine can be further improved.

Description

Technical Field

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

[0002] In related technologies, engine cooling is achieved through a cooling structure surrounding the cylinder and cylinder head, where coolant circulates within the cooling structure inside the cylinder and cylinder head.

[0003] However, the limited arrangement of the cooling structure inside the cylinder block can easily lead to poor coolant flow and poor exhaust performance, which can cause localized overheating of the engine. This can affect the uniform cooling of the engine, the cooling effect and efficiency, and also reduce the engine's working stability and reliability. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide an engine that occupies less space, has better cooling uniformity, and offers higher cooling effect and efficiency.

[0005] This application further proposes a vehicle employing the aforementioned engine.

[0006] In a first aspect, this application provides an engine, including: a cylinder block and a cylinder head, the cylinder block having an intake-side water jacket and an exhaust-side water jacket disposed opposite to each other; the cylinder head water jacket of the cylinder head communicating with the intake-side water jacket and the exhaust-side water jacket to form a coolant flow path; wherein a communicating water jacket is provided between the intake-side water jacket and the exhaust-side water jacket.

[0007] According to the engine of the present application embodiment, the exhaust side water jacket and the intake side water jacket in the coolant flow path can be connected, which can not only improve the fluidity of the coolant and avoid the occurrence of flow dead zones, but also facilitate the venting inside the water jacket, reduce the probability of local overheating, and further improve the working stability and reliability of the engine.

[0008] According to some embodiments of this application, the cylinder block has a first cylinder bank and a second cylinder bank symmetrically arranged in a first direction, the intake side water jacket includes a first intake side water jacket and a second intake side water jacket, the exhaust side water jacket includes a first exhaust side water jacket and a second exhaust side water jacket, the first cylinder bank has a first intake side water jacket and a first exhaust side water jacket on both sides in a second direction, the second cylinder bank has a second intake side water jacket and a second exhaust side water jacket on both sides in the second direction, and the first direction and the second direction form an angle; The cylinder head includes: a first cylinder head and a second cylinder head, the first cylinder head and the second cylinder head being disposed on both sides of the cylinder block in the first direction; the first cylinder head has a first cylinder head water jacket, the second cylinder head has a second cylinder head water jacket; the first intake side water jacket, the first cylinder head water jacket and the first exhaust side water jacket are sequentially connected, and the second intake side water jacket, the second cylinder head water jacket and the second exhaust side water jacket are sequentially connected; wherein A connecting water jacket is provided between the first exhaust-side water jacket and the first intake-side water jacket, and / or between the second exhaust-side water jacket and the second intake-side water jacket.

[0009] According to some embodiments of this application, the cylinder block has a water inlet, which is connected to the first exhaust-side water jacket and the second exhaust-side water jacket, and the water inlet is disposed adjacent to the first exhaust-side water jacket, and the water inlet is located below the crankcase inside the cylinder block.

[0010] According to some embodiments of this application, an inter-cylinder water jacket is provided in the cylinder body, one end of the inter-cylinder water jacket is connected to the water inlet, and the other end is connected to the second exhaust side water jacket.

[0011] According to some embodiments of this application, the inter-cylinder water jacket is located below the crankcase inside the cylinder body.

[0012] According to some embodiments of this application, the cylinder block further has a first water outlet and a second water outlet, the first water outlet being connected to the first air intake side water jacket, the second water outlet being connected to the second air intake side water jacket, and the first water outlet and the second water outlet being used to connect to the thermostat.

[0013] According to some embodiments of this application, the flow area of ​​the second outlet is greater than that of the first outlet.

[0014] According to some embodiments of this application, the flow area of ​​the first outlet is S1, the flow area of ​​the second outlet is S2, and the following conditions are met: 1.4S1≤S2≤1.6S1.

[0015] According to some embodiments of this application, both the first cylinder head water jacket and the second cylinder head water jacket are constructed as cross-flow water jackets.

[0016] Secondly, this application provides a vehicle including the engine described in the above embodiments.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of an engine from one angle according to an embodiment of this application; Figure 2 This is a schematic diagram of the engine from another angle according to an embodiment of this application.

[0019] Figure label: Engine 100, Cylinder block 10, first cylinder bank 11, second cylinder bank 12, first exhaust side water jacket 13, first intake side water jacket 14, second exhaust side water jacket 15, second intake side water jacket 16, water inlet 17, inter-cylinder water jacket 18, first water outlet 191, second water outlet 192, connecting water jacket 193. First cylinder head 20, first cylinder head water jacket 21 Second cylinder head 30, second cylinder head water jacket 31 First direction X, second direction Y. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0022] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0025] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0028] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0029] In this application, "multiple" means two or more (including two).

[0030] In related technologies, engines can be cooled through cooling structures, such as cylinder block water jackets (surrounding the cylinders) and cylinder head water jackets (covering the top of the combustion chamber), as well as cavities and flow channels. The core function is to absorb the waste heat generated by the engine and dissipate the heat through the circulation of coolant, ensuring that the engine operates stably within a safe, efficient, and clean temperature range.

[0031] However, the limited arrangement of the cooling structure inside the cylinder block can easily lead to poor coolant flow (e.g., the intake and exhaust water jackets are set up independently, resulting in dead zones and gas accumulation), poor exhaust performance, and localized engine overheating. This can affect the uniform cooling of the engine, impacting cooling effect and efficiency, and also reducing the engine's operational stability and reliability.

[0032] Based on this, this application proposes an engine in which a connected water jacket is arranged inside the engine to improve the flow of coolant between the intake-side water jacket and the exhaust-side water jacket, thereby improving exhaust performance. This can improve the uniformity of coolant flow inside the engine, effectively improve exhaust performance, avoid local overheating, and improve cooling uniformity, cooling efficiency, and cooling effect.

[0033] The following is for reference. Figures 1-2 This invention describes an engine 100 and a vehicle according to an embodiment of the present invention.

[0034] like Figure 1 and Figure 2 As shown, this application provides an engine 100, including: a cylinder block 10 and a cylinder head. The cylinder block 10 has an intake-side water jacket and an exhaust-side water jacket disposed opposite to each other. The cylinder head water jacket of the cylinder head is connected to the intake-side water jacket and the exhaust-side water jacket to form a coolant flow path. A connecting water jacket 193 is provided between the intake-side water jacket and the exhaust-side water jacket.

[0035] Specifically, the cooling process of engine 100 is as follows: the cooling medium enters the exhaust-side water jacket, then enters the cylinder head, and then enters the intake-side water jacket from the cylinder head, so that the coolant flows from the exhaust side to the intake side, thereby forming a complete coolant flow path and completing the cooling of the engine.

[0036] It should be noted that there may be a flow dead zone inside the intake-side water jacket or the exhaust-side water jacket. By setting a connecting water jacket 193 between the intake-side water jacket and the exhaust-side water jacket, while ensuring that most of the coolant enters the cylinder head, the flow between the intake-side water jacket and the exhaust-side water jacket of the cylinder block 10 can be increased to improve the flow dead zone phenomenon.

[0037] Meanwhile, since the first direction is the height direction of the engine 100, during the coolant circulation process, due to gravity, the gas in the water jacket will accumulate at the high point of the exhaust side water jacket. By setting a connecting water jacket 193 between the intake side water jacket and the exhaust side water jacket of the cylinder block 10, the gas accumulated at the high point of the exhaust side water jacket can be discharged through the intake side water jacket of the cylinder block 10, avoiding local high temperature caused by local gas accumulation, so as to avoid affecting the working stability and reliability of the engine 100.

[0038] According to the embodiment of this application, the engine 100 can connect the exhaust side water jacket and the intake side water jacket in the coolant flow path. This not only improves the fluidity of the coolant and avoids dead zones, but also facilitates the venting of the water jacket, reducing the probability of local overheating and further improving the working stability and reliability of the engine 100.

[0039] like Figure 1 As shown, according to some embodiments of this application, the cylinder block 10 has a first cylinder bank 11 and a second cylinder bank 12 symmetrically arranged in a first direction.

[0040] In other words, the engine 100 in this application embodiment can be constructed as a horizontally opposed structure, or as a V-shaped structure, W-shaped structure, etc., with two cylinder banks, and the two cylinder banks (i.e., the first cylinder bank 11 and the second cylinder bank 12) can be arranged opposite to each other in a first direction, such as a horizontally opposed four-cylinder engine, a six-cylinder engine, etc.

[0041] Furthermore, the intake-side water jacket includes a first intake-side water jacket 14 and a second intake-side water jacket 16, and the exhaust-side water jacket includes a first exhaust-side water jacket 13 and a second exhaust-side water jacket 15. The first cylinder bank 11 has a first intake-side water jacket 14 and a first exhaust-side water jacket 13 on both sides in the second direction, and the second cylinder bank 12 has a second intake-side water jacket 16 and a second exhaust-side water jacket 15 on both sides in the second direction. The first intake-side water jacket 14 is used to supply water to the first cylinder bank 11 on the intake side of the first cylinder bank 11. 1. Cooling is performed by a first exhaust-side water jacket 13 for cooling the first cylinder bank 11 on the exhaust side, a second intake-side water jacket 16 for cooling the second cylinder bank 12 on the intake side of the first cylinder bank 11, and a second exhaust-side water jacket 15 for cooling the second cylinder bank 12 on the exhaust side of the second cylinder bank 12, so that the intake and exhaust sides of the first cylinder bank 11 and the second cylinder bank 12 can be effectively cooled, and the first direction and the second direction have an angle.

[0042] See Figure 1As shown, the cylinder head includes a first cylinder head 20 and a second cylinder head 30, which cover the cylinder block 10 on both sides in a first direction. The first cylinder head 20 has a first cylinder head water jacket 21, and the second cylinder head 30 has a second cylinder head water jacket 31. The first intake side water jacket 14, the first cylinder head water jacket 21, and the first exhaust side water jacket 13 are sequentially connected, and the second intake side water jacket 16, the second cylinder head water jacket 31, and the second exhaust side water jacket 15 are sequentially connected, so that a portion of the coolant can flow sequentially through the first intake side water jacket 14, the first cylinder head water jacket 20, the first cylinder head water jacket 30, and the second exhaust side water jacket 31. 1 and the first exhaust side water jacket 13, or sequentially flowing through the first exhaust side water jacket 13, the first cylinder head water jacket 21 and the first intake side water jacket 14 to achieve sufficient cooling of multiple combustion chambers located on one side of the cylinder block 10 in the first direction, so that another part of the coolant can sequentially flow through the second intake side water jacket 16, the second cylinder head water jacket 31 and the second exhaust side water jacket 15, or sequentially flow through the second exhaust side water jacket 15, the second cylinder head water jacket 31 and the second intake side water jacket 16 to achieve sufficient cooling of multiple combustion chambers located on the other side of the cylinder block 10 in the first direction.

[0043] For example, the coolant enters the exhaust-side water jacket (first exhaust-side water jacket 13 or second exhaust-side water jacket 15), flows through the water hole on the cylinder head gasket (gasket between the first cylinder head 20 and the cylinder block 10 or gasket between the second cylinder head 30 and the cylinder block 10), flows into the cylinder head water jacket (first cylinder head water jacket 21 or second cylinder head water jacket 31), then flows out of the cylinder head water jacket and flows into the intake-side water jacket (first intake-side water jacket 14 or second intake-side water jacket 16), and flows out after sufficient heat exchange to complete one coolant cycle.

[0044] A connecting water jacket 193 is provided between the first exhaust side water jacket 13 and the first intake side water jacket 14, and / or the second exhaust side water jacket 15 and the second intake side water jacket 16.

[0045] For example, combined Figure 1 As shown, a connecting water jacket 193 can be provided between the first exhaust side water jacket 13 and the first intake side water jacket 14, or a connecting water jacket 193 can be provided between the second exhaust side water jacket 15 and the second intake side water jacket 16. Preferably, a connecting water jacket 193 is provided between the first exhaust side water jacket 13 and the first intake side water jacket 14, and between the second exhaust side water jacket 15 and the second intake side water jacket 16.

[0046] It should be noted that there may be flow dead zones inside the intake-side water jacket (first intake-side water jacket 14 or second intake-side water jacket 16) or the exhaust-side water jacket (first exhaust-side water jacket 13 or second exhaust-side water jacket 15). By setting a connecting water jacket 193 between the intake-side water jacket and the exhaust-side water jacket, while ensuring that most of the cooling medium enters the cylinder head water jacket, the flow between the intake-side water jacket and the exhaust-side water jacket of the cylinder block 10 can be increased to improve the flow dead zone phenomenon.

[0047] Meanwhile, since the first direction is the height direction of the engine 100, during the cooling medium circulation process, due to gravity, the gas in the water jacket will accumulate at the high point of the exhaust side water jacket. By setting a connecting water jacket 193 between the intake side water jacket and the exhaust side water jacket of the cylinder block 10, the gas accumulated at the high point of the exhaust side water jacket can be discharged through the intake side water jacket of the cylinder block 10, avoiding local high temperature caused by local gas accumulation, so as to avoid affecting the working stability and reliability of the engine 100.

[0048] According to the embodiment of this application, the engine 100 has improved cooling effect and efficiency by setting separate coolant flow paths for the first cylinder bank 11 and the second cylinder bank 12 inside the cylinder block 10 (defined by the first exhaust side water jacket 13, the first cylinder head water jacket 21 and the first intake side water jacket 14, respectively, and the second exhaust side water jacket 15, the second cylinder head water jacket 31 and the second intake side water jacket 16). Furthermore, by setting a connecting water jacket 193, the exhaust side water jacket and the intake side water jacket in at least one coolant flow path can be connected, which can not only improve the fluidity of the coolant and avoid the occurrence of flow dead zones, but also facilitate the exhaust of the water jacket, reduce the probability of local overheating, and further improve the working stability and reliability of the engine 100.

[0049] like Figure 1 As shown, according to some embodiments of this application, the cylinder body 10 has a water inlet 17, which is connected to the first exhaust side water jacket 13 and the second exhaust side water jacket 15, and the water inlet 17 is disposed adjacent to the first exhaust side water jacket 13.

[0050] Specifically, a water inlet 17 is provided on the cylinder block 10, and the water pump supplies coolant through the water inlet 17. The coolant can be diverted to the first exhaust side water jacket 13 and the second exhaust side water jacket 15, so that the coolant can be supplied to two coolant flow paths through one water pump. This can reduce the number of water pumps, reduce costs, simplify the structure, improve the space occupation of the engine 100, and reduce the difficulty of engine 100 layout.

[0051] It should be noted that the arrangement of the inlet 17 adjacent to the first exhaust side water jacket 13 means that the distance between the inlet 17 and the first exhaust side water jacket 13 is less than the distance between the inlet and the second exhaust side water jacket 15.

[0052] like Figure 1 As shown, according to some embodiments of this application, the water inlet 17 is located below the crankcase inside the cylinder block 10.

[0053] The first cylinder bank 11 and the second cylinder bank 12 are opposite each other in the first direction, and the cylinder block 10 is located in the gap between the first cylinder bank 11 and the second cylinder bank 12 in the first direction to form a crankcase, in which a crankshaft can be installed. The water inlet 17 is located adjacent to the first exhaust side water jacket 13, and the water pump is arranged below the crankcase (the space inside the cylinder block 10 used to accommodate the crankshaft) inside the cylinder block 10. The coolant can flow directly from the water inlet 17 to the first exhaust side water jacket 13, which helps to reduce the length of the engine 100, so that the engine 100 structure is more compact and occupies less space.

[0054] More importantly, the coolant is introduced into the cylinder block 10 through the exhaust side water jacket, and the water inlet 17 is located below the crankcase. The water pump can be installed closer to the water inlet 17, which can reduce the length of the pipeline and improve space utilization.

[0055] According to some embodiments of this application, an inter-cylinder water jacket 18 is provided inside the cylinder body 10. One end of the inter-cylinder water jacket 18 is connected to the water inlet 17, and the other end is connected to the second exhaust side water jacket 15.

[0056] Specifically, an inter-cylinder water jacket 18 is provided between the first exhaust-side water jacket 13 and the second exhaust-side water jacket 15. The coolant entering through the inlet 17 can be directly split into two paths: one enters the first exhaust-side water jacket 13, and the other enters the second exhaust-side water jacket 15 through the inter-cylinder water jacket 18. This allows the two coolant flow paths to be supplied with coolant by the same water pump through the inter-cylinder water jacket 18. Under the premise of achieving the above technical effect, the inter-cylinder water jacket 18 is formed inside the cylinder block 10, eliminating the need for external pipelines to connect the first exhaust-side water jacket 13 and the second exhaust-side water jacket 15. This also reduces exposed pipelines, making the overall layout neater, occupying less space, and having a higher degree of compactness.

[0057] like Figure 1 As shown, according to some embodiments of this application, the inter-cylinder water jacket 18 is located below the crankcase inside the cylinder block 10.

[0058] It is understandable that the inter-cylinder water jacket 18 between the first exhaust-side water jacket 13 and the second exhaust-side water jacket 15 can be arranged below the crankcase of the cylinder block 10. This can make full use of the internal space of the cylinder block 10 and further improve the cooling effect of the cylinder block 10 through the added inter-cylinder water jacket 18. Moreover, the inter-cylinder water jacket 18 spans the crankcase below the crankcase, which can also achieve indirect cooling of the crankcase area inside the cylinder block 10. At the same time, the direct connection between the first exhaust-side water jacket 13 and the second exhaust-side water jacket 15 inside the cylinder block 10 can reduce the flow resistance of the coolant between the first exhaust-side water jacket 13 and the second exhaust-side water jacket 15, reduce the exposed pipes of the engine 100, and improve the space occupation.

[0059] In addition, the inter-cylinder water jacket 18 is located below the crankcase, which can shorten the distance between the inter-cylinder water jacket 18 and the water pump. The coolant flow length into the first exhaust side water jacket 13 and the second exhaust side water jacket 15 is also shorter, which can reduce flow resistance and increase flow rate, thereby further improving the cooling effect and cooling efficiency.

[0060] According to some embodiments of this application, the cylinder block 10 also has a first water outlet 191 and a second water outlet 192. The first water outlet 191 is connected to the first intake side water jacket 14, and the second water outlet 192 is connected to the second intake side water jacket 16. The first water outlet 191 and the second water outlet 192 are used to connect to the thermostat.

[0061] like Figure 1 As shown, the complete flow path of the coolant is as follows: First flow path: water pump, inlet 17, first exhaust side water jacket 13, first cylinder head water jacket 21, first intake side water jacket 14, first outlet 191, thermostat; Second flow path: water pump, inlet 17, inter-cylinder water jacket 18, second exhaust side water jacket 15, second cylinder head water jacket 31, second intake side water jacket 16, second outlet 192, thermostat.

[0062] In this way, while simplifying the structure of the engine 100 cooling system, reducing costs and improving space utilization, the cooling effect and efficiency of the engine 100 can be further improved by cooling the first cylinder bank 11 and the second cylinder bank 12 in parallel through two coolant flow paths.

[0063] It should be noted that the second coolant flow path requires water to be drawn from the inlet 17 through the inter-cylinder water jacket 18, which results in the coolant flow resistance in the second exhaust side water jacket 15 being greater than the coolant flow resistance in the first exhaust side water jacket 13.

[0064] Based on this, such as Figure 1 As shown, this application makes the flow area of ​​the second outlet 192 larger than that of the first outlet 191.

[0065] In other words, to ensure better consistency of coolant flow between the first exhaust-side water jacket 13 and the second exhaust-side water jacket 15, the flow area of ​​the second outlet 192 is larger than that of the first outlet 191. This reduces the flow resistance of the coolant flow path formed by the second exhaust-side water jacket 15, the second cylinder head water jacket 31, and the second intake-side water jacket 16, ensuring similar cooling performance of the two coolant flow paths, improving the combustion stability of the combustion chambers on both sides, and enhancing the reliability of the engine 100.

[0066] According to some embodiments of this application, the flow area of ​​the first outlet 191 is S1, the flow area of ​​the second outlet 192 is S2, and satisfies: 1.4S1≤S2≤1.6S1.

[0067] For example, S2 is 1.4S1, 1.5S1, or 1.6S1.

[0068] Understandably, the flow area of ​​the second outlet 192 is not less than 1.4S1, which can prevent the flow rate of the first outlet 191 from being too large and the flow rate of the second outlet 192 from being too small. The flow area of ​​the second outlet 192 is not greater than 1.6S2, which can prevent the flow rate of the second outlet 192 from being too large and the flow rate of the first outlet 191 from being too small. This ensures that the outflow rate of the second outlet 192 is more consistent with the outflow rate of the first outlet 191, so as to improve the cooling uniformity of the first cylinder bank 11 and the second cylinder bank 12 on both sides of the first direction.

[0069] According to some embodiments of this application, both the first cylinder head water jacket 21 and the second cylinder head water jacket 31 are constructed as cross-flow water jackets.

[0070] In this way, the coolant in the first cylinder head water jacket 21 and the second cylinder head water jacket 31 on both sides of the first direction can flow from the exhaust side to the intake side, cooling the exhaust side first and then the intake side, which can improve the cooling effect. In addition, the cross-flow water jacket structure can reduce the flow resistance and increase the flow rate, thereby improving the cooling effect and cooling efficiency.

[0071] In summary, according to the engine 100 of this application embodiment, the first exhaust-side water jacket 13, the first cylinder head water jacket 21, and the first intake-side water jacket 14 form a coolant flow path, and the second exhaust-side water jacket 15, the second cylinder head water jacket 31, and the second intake-side water jacket 16 form a coolant flow path. A connecting water jacket 193 is provided between the first exhaust-side water jacket 13 and the first intake-side water jacket 14, and a connecting water jacket 193 is provided between the second exhaust-side water jacket 15 and the second intake-side water jacket 16. This can avoid the generation of flow dead zones, increase the fluidity of the coolant, and the connecting water jacket 193 also has an exhaust function, which can avoid the risk of local high temperature caused by gas accumulation and ensure uniform cooling of the intake and exhaust sides of the cylinder block 10.

[0072] Meanwhile, an inter-cylinder water jacket 18 is provided between the first exhaust side water jacket 13 and the second exhaust side water jacket 15, and is arranged below the crankcase and located inside the cylinder block 10. The second exhaust side water jacket 15 takes coolant from the first exhaust side water jacket 13 through the inter-cylinder water jacket 18, which can reduce the flow resistance of the second exhaust side water jacket 15, reduce the number of connecting pipes, and make the engine 100 more compact.

[0073] Furthermore, the flow area of ​​the first outlet 191 is smaller than that of the second outlet 192, which can reduce the flow resistance of the second exhaust side water jacket 15, the second intake side water jacket 16 and the second cylinder head water jacket 31, increase the coolant flow rate inside the coolant flow path corresponding to the second cylinder bank 12, keep the coolant flow rate in the two coolant flow paths consistent, improve the cooling uniformity of the first cylinder bank 11 and the second cylinder bank 12, and improve the reliability and stability of the engine 100.

[0074] This application provides a vehicle, including: the engine 100 in the above embodiments.

[0075] According to the embodiments of this application, the vehicle 100 uses the above-mentioned engine 100. On the one hand, the engine 100 has better cooling efficiency and cooling effect, which can improve the stability and reliability of the vehicle. On the other hand, the engine 100 occupies less space, which can reduce the space occupied in the engine compartment and reduce the difficulty of arranging internal components in the engine compartment of the vehicle 100. This is conducive to expanding the passenger compartment space, improving the driving and riding comfort of the vehicle 100, and reducing the overall vehicle cost.

[0076] Other configurations and operations of the engine 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An engine, characterized in that, include: The cylinder (10) has an intake-side water jacket and an exhaust-side water jacket disposed opposite to each other; Cylinder head, wherein the cylinder head water jacket is connected to the intake side water jacket and the exhaust side water jacket to form a coolant flow path; in A connecting water jacket (193) is provided between the intake side water jacket and the exhaust side water jacket.

2. The engine according to claim 1, characterized in that, The cylinder block (10) has a first cylinder bank (11) and a second cylinder bank (12) symmetrically arranged in a first direction. The intake side water jacket includes a first intake side water jacket (14) and a second intake side water jacket (16). The exhaust side water jacket includes a first exhaust side water jacket (13) and a second exhaust side water jacket (15). The first cylinder bank (11) has a first intake side water jacket (14) and a first exhaust side water jacket (13) on both sides in a second direction. The second cylinder bank (12) has a second intake side water jacket (16) and a second exhaust side water jacket (15) on both sides in a second direction. The first direction and the second direction have an angle. The cylinder head includes a first cylinder head (20) and a second cylinder head (30), the first cylinder head (20) and the second cylinder head (30) being disposed on both sides of the cylinder body (10) in the first direction. The first cylinder head (20) has a first cylinder head water jacket (21), and the second cylinder head (30) has a second cylinder head water jacket (31). The first intake side water jacket (14), the first cylinder head water jacket (21) and the first exhaust side water jacket (13) are sequentially connected, and the second intake side water jacket (16), the second cylinder head water jacket (31) and the second exhaust side water jacket (15) are sequentially connected. A connecting water jacket (193) is provided between the first exhaust side water jacket (13) and the first intake side water jacket (14), and / or between the second exhaust side water jacket (15) and the second intake side water jacket (16).

3. The engine according to claim 2, characterized in that, The cylinder block (10) has a water inlet (17), which is connected to the first exhaust side water jacket (13) and the second exhaust side water jacket (15). The water inlet (17) is located adjacent to the first exhaust side water jacket (13) and is located below the crankcase inside the cylinder block (10).

4. The engine according to claim 3, characterized in that, The cylinder body (10) is provided with an inter-cylinder water jacket (18), one end of which is connected to the water inlet (17) and the other end is connected to the second exhaust side water jacket (15).

5. The engine according to claim 4, characterized in that, The inter-cylinder water jacket (18) is located below the crankcase inside the cylinder block (10).

6. The engine according to claim 2, characterized in that, The cylinder body (10) also has a first water outlet (191) and a second water outlet (192). The first water outlet (191) is connected to the first air intake side water jacket (14), and the second water outlet (192) is connected to the second air intake side water jacket (16). The first water outlet (191) and the second water outlet (192) are used to connect to the thermostat.

7. The engine according to claim 6, characterized in that, The flow area of ​​the second outlet (192) is greater than that of the first outlet (191).

8. The engine according to claim 7, characterized in that, The flow area of ​​the first outlet (191) is S1, and the flow area of ​​the second outlet (192) is S2, and satisfies: 1.4S1≤S2≤1.6S1.

9. The engine according to any one of claims 2-8, characterized in that, Both the first cylinder head water jacket (21) and the second cylinder head water jacket (31) are constructed as cross-flow water jackets.

10. A vehicle, characterized in that, include: The engine according to any one of claims 1-9.

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