Engine assembly and vehicle

Abstract

This utility model discloses an engine assembly and a vehicle. The engine assembly according to this utility model includes: a cylinder block and a main water jacket; the cylinder block has an outer shell and an inner shell; the inner shell surrounds and defines a cylinder bore opening towards the end face of the cylinder block; the outer shell surrounds the inner shell; a connecting member is provided between the outer shell and the inner shell to support the inner shell; the main water jacket is disposed between the outer shell and the inner shell and surrounds at least a portion of the outer periphery of the cylinder bore; the main water jacket is adapted to circulate coolant to cool the cylinder block; an annular water channel is formed between the outer shell and the inner shell, located at the end face of the cylinder block and surrounding the cylinder bore; the annular water channel is disposed at the top of the main water jacket and communicates with the main water jacket. The engine assembly according to this utility model, by providing a main water jacket between the outer shell and the inner shell of the cylinder block and providing an annular water channel at the top of the main water jacket, increases the heat exchange area and heat exchange time of the coolant within the cylinder block, improves heat exchange efficiency, and thus improves the engine's heat dissipation capacity.

Description

Technical Field

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

[0002] With the development of automotive technology, the requirements for engine performance, emissions, compactness, lightweighting, and low cost are becoming increasingly stringent. Current engines have high detonation pressure and thermal efficiency, and the temperature radiated from the combustion chamber to the first piston ring is also rising, accelerating piston ring wear and oil degradation. Therefore, it is necessary to optimize the engine block design to improve cooling efficiency and reduce high-temperature damage to the engine. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an engine assembly. According to this invention, the engine assembly has a main water jacket between the outer and inner shells of the cylinder block, and an annular water channel at the top of the main water jacket, forming a complete cooling system. This increases the heat exchange area and time of the coolant within the cylinder block, improves heat exchange efficiency, and thus enhances the engine's heat dissipation capacity.

[0004] This utility model also proposes a vehicle including the above-mentioned engine assembly.

[0005] The engine assembly according to this utility model includes: a cylinder block and a main water jacket. The cylinder block is provided with an outer shell and an inner shell. The inner shell is arranged around and defines a cylinder bore that opens toward the end face of the cylinder block. The outer shell is arranged around the inner shell. A connecting member is provided between the outer shell and the inner shell to support the inner shell on the outer shell. The main water jacket is disposed between the outer shell and the inner shell and surrounds at least a portion of the outer periphery of the cylinder bore. The main water jacket is adapted to circulate coolant to cool the cylinder block. An annular water channel is formed between the outer shell and the inner shell, located at the end face of the cylinder block and surrounding the cylinder bore. The annular water channel is disposed at the top of the main water jacket and communicates with the main water jacket.

[0006] The engine assembly of this invention forms a complete cooling system by installing a main water jacket between the outer and inner shells of the cylinder block, and an annular water channel at the top of the main water jacket. The coolant circulates in the main water jacket and the annular water channel, effectively removing heat generated by the cylinder block, thereby enhancing the engine's cooling capacity and helping to maintain the engine within a suitable operating temperature range. The annular water channel, located at the top of the main water jacket and surrounding the cylinder bore, allows for precise cooling of the high temperatures radiated from the combustion chamber to the cylinder bore ring. Because the annular water channel surrounds the cylinder bore and is located on the end face of the cylinder block, and because the fuel jet from the injector falls onto the inner wall of the cylinder bore, forming a high-temperature area, the annular water channel can promptly cool these high-temperature areas on the cylinder block, preventing accelerated wear of the piston rings due to high temperatures, slowing down oil deterioration, and extending the service life of engine components. The annular water channel is connected to the main water jacket, allowing the coolant to circulate during flow, increasing the heat exchange area and time within the cylinder block, improving heat exchange efficiency, and thus enhancing the engine's heat dissipation capacity.

[0007] According to one embodiment of the present invention, a recessed annular groove is formed on the end face of the cylinder body, the annular groove surrounds the outer periphery of the open side of the cylinder bore, and the annular water channel is defined within the annular groove.

[0008] According to one embodiment of the present invention, the cylinder body is provided with a plurality of connectors spaced apart in the circumferential direction, and a water inlet hole is formed between two adjacent connectors to connect the main water jacket with the annular water channel.

[0009] According to one embodiment of the present invention, the flow area of ​​the annular groove is smaller than the flow area of ​​the water inlet.

[0010] According to one embodiment of the present invention, the engine assembly further includes: a cylinder head, the cylinder head being disposed on the top of the cylinder block, a cylinder head water jacket being disposed inside the cylinder head, and the cylinder head water jacket being connected to the annular water channel.

[0011] According to one embodiment of the present invention, the engine assembly further includes: a gasket, the gasket being disposed between the cylinder block end face and the cylinder head, the gasket being disposed on the cylinder block end face and closing the annular groove, and the gasket being provided with a connecting hole for communicating the annular water passage with the cylinder head water jacket.

[0012] According to one embodiment of the present invention, an injector is provided on the cylinder head, the injector is provided with an injection hole facing the inner wall of the cylinder bore, an impact area is formed on the inner wall of the cylinder bore that is directly opposite to the direction of the injection hole, and at least a portion of the water inlet hole overlaps with the impact area in the radial direction.

[0013] According to one embodiment of the present invention, the cylinder bore is constructed in multiple ways, the main water jacket is arranged around the outer periphery of the multiple cylinder bores, and an annular water channel is provided at the top of each cylinder bore.

[0014] According to one embodiment of the present invention, the inner shells of the plurality of cylinder bores are connected in sequence, and the main water jackets and / or the annular water channels on the outer periphery of two adjacent cylinder bores are connected to each other.

[0015] The vehicle according to this utility model is briefly described below.

[0016] The vehicle according to this utility model includes the engine assembly in the above embodiments. Since the vehicle according to this utility model includes the engine assembly in the above embodiments, the engine assembly improves the strength of the cylinder bore structure by setting a connecting member between the inner shell and the outer shell of the cylinder block, enabling the engine to withstand greater explosion pressure without increasing the cylinder block wall thickness, resulting in lighter weight. At the same time, the cooperation between the main water jacket and the annular water channel can improve the engine's heat dissipation efficiency without affecting the strength of the cylinder block structure, allowing the engine to operate at a suitable temperature, thereby improving the vehicle's power performance and fuel economy.

[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:

[0019] Figure 1 This is a top view of the cylinder body according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the main water jacket according to an embodiment of the present invention.

[0021] Figure label:

[0022] Cylinder block 11, inner shell 111, outer shell 112, cylinder bore 113, connecting piece 114;

[0023] Main water jacket 12;

[0024] Circular waterway 13;

[0025] Water hole 14. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] Current engines have high detonation pressure and thermal efficiency, and the temperature radiated from the combustion chamber to the first piston ring is increasingly high, accelerating piston ring wear and oil degradation. Therefore, engine block design optimization is necessary to improve cooling efficiency and reduce high-temperature damage. In related technologies, engine cylinder bores typically have a main water jacket around their outer circumference to improve cooling efficiency, dissipating heat through coolant exchange. However, relying solely on the main water jacket for coolant flow is not ideal for cooling the cylinder bore; further engine design is needed to ensure effective heat dissipation.

[0028] The following is for reference. Figures 1-2 This invention describes an engine assembly according to an embodiment of the present invention.

[0029] The engine assembly according to this utility model includes: a cylinder block 11 and a main water jacket 12. The cylinder block 11 is provided with an outer shell 112 and an inner shell 111. The inner shell 111 is arranged around and defines a cylinder bore 113 that opens toward the end face of the cylinder block 11. The outer shell 112 is arranged around the inner shell 111. A connector 114 is provided between the outer shell 112 and the inner shell 111 to support the inner shell 111 on the outer shell 112. The main water jacket 12 is disposed between the outer shell 112 and the inner shell 111 and surrounds at least a portion of the outer periphery of the cylinder bore 113. The main water jacket 12 is adapted to circulate coolant to cool the cylinder block 11. An annular water channel 13 is formed between the outer shell 112 and the inner shell 111, located on the end face of the cylinder block 11 and surrounding the cylinder bore 113. The annular water channel 13 is disposed on the top of the main water jacket 12 and communicates with the main water jacket 12.

[0030] The engine assembly of this utility model is provided with a cylinder block 11, and an outer shell 112 and an inner shell 111 are provided inside the cylinder block 11. The inner shell 111 surrounds and defines the cylinder bore 113. The piston of the engine can reciprocate within the cylinder bore 113. An outer shell 112 is provided around the outer periphery of the inner shell 111. The outer shell 112 can be simply understood as the outer wall of the cylinder block 11. A connecting member 114 is provided between the outer shell 112 and the inner shell 111. The two ends of the connecting member 114 are respectively connected to the outer shell 112 and the inner shell 111, which can support the inner shell 111 inside the outer shell 112, improve the connection strength between the outer shell 112 and the inner shell 111, and thus improve the structural strength of the entire cylinder block 11. The cylinder bore 113 can withstand higher explosion pressure. Unlike the related technology that uses the method of increasing the wall thickness of the cylinder bore 113, it does not increase the weight and wall thickness of the cylinder block 11, has low cost, and does not cause poor heat dissipation capacity of the cylinder block 11 due to excessive wall thickness. A main water jacket 12 is provided between the outer shell 112 and the inner shell 111. The main water jacket 12 surrounds at least part of the outer periphery of the cylinder bore 113. Coolant can flow inside the main water jacket 12. When the engine is running, the coolant flows inside the main water jacket 12. Since the main water jacket 12 is arranged around the outer periphery of the cylinder bore 113, the coolant inside the main water jacket 12 can exchange heat with the inner wall of the cylinder bore 113 (i.e., the inner shell 111). A large amount of heat energy generated by the engine can be dissipated through the heat exchange between the coolant inside the main water jacket 12 and the cylinder bore 113, thereby improving the engine's heat dissipation capacity. Moreover, the main water jacket 12 is arranged around the cylinder bore 113, which can increase the heat exchange area and further improve the engine's heat dissipation efficiency.

[0031] The top of the main water jacket 12 also forms an annular water channel 13 that communicates with the main water jacket 12. The annular water jacket surrounds the cylinder bore 113 and is located on the end face of the cylinder block 11. The coolant in the main water jacket 12 can enter the annular water channel 13 and exchange heat with the open part of the cylinder bore 113, thereby removing some of the heat from the cylinder bore 113 and further improving the engine's heat dissipation capacity.

[0032] The engine assembly forms a complete cooling system by installing a main water jacket 12 between the outer shell 112 and the inner shell 111 of the cylinder block 11, and an annular water channel 13 on top of the main water jacket 12. Coolant flows through the main water jacket 12 and the annular water channel 13, effectively removing heat generated by the cylinder block 11, thereby enhancing the engine's cooling capacity and helping to maintain the engine within a suitable operating temperature range. The annular water channel 13, located on top of the main water jacket 12 and surrounding the cylinder bore 113, allows for precise cooling of the high temperatures radiated from the combustion chamber to the ring area of ​​the cylinder bore 113. Since the annular water channel 13 surrounds the cylinder bore 113 and is located on the end face of the cylinder block 11, and the fuel jet from the injector falls onto the inner wall of the cylinder bore 113, forming a high-temperature area, the annular water channel 13 can promptly cool the high-temperature areas on the cylinder block 11, preventing accelerated wear of the piston rings due to high temperatures, slowing down oil degradation, and extending the service life of engine components. The annular water channel 13 is connected to the main water jacket 12, and the coolant can form a circulation during the flow process, which increases the heat exchange area and heat exchange time of the coolant in the cylinder block 11, improves the heat exchange efficiency, and thus improves the engine's heat dissipation capacity.

[0033] The engine assembly of this invention, through the rational design of the outer shell 112, inner shell 111, and connecting member 114 of the cylinder block 11, not only ensures the support and reinforcement of the cylinder bore 113, but also achieves good heat dissipation performance through the main water jacket 12 and annular water channel 13, thus achieving a balance between the strength of the cylinder bore 113 and heat dissipation, meeting the requirements of high explosion pressure and high thermal efficiency operation of the engine. Furthermore, it eliminates the need for a large-flow water pump, avoiding the mechanical power loss caused by directly increasing the water pump flow rate, and improving the engine's energy utilization efficiency while ensuring cooling effect.

[0034] According to one embodiment of the present invention, a recessed annular groove is formed on the end face of the cylinder block 11, surrounding the outer periphery of the open side of the cylinder bore 113, and an annular water channel 13 is defined within the annular groove. By defining the annular water channel 13 by forming a recessed annular groove on the end face of the cylinder block 11, the engine assembly can accurately position the annular water channel 13 on the outer periphery of the open side of the cylinder bore 113, that is, near the combustion chamber or other high-temperature areas. This allows the coolant to directly act on the high-temperature areas, efficiently cooling the piston rings and the cylinder bore 113 wall surface radiated by the combustion heat source, effectively reducing the temperature of the cylinder bore 113, preventing the piston rings from wearing faster due to high temperature, reducing oil deterioration, and improving the stability and reliability of engine operation.

[0035] The recessed annular groove structure provides a specific flow path for the coolant, allowing it to flow orderly along the groove and form a relatively stable cooling cycle. This helps increase the residence time and heat exchange area of ​​the coolant in high-temperature regions, further improving heat exchange efficiency and thus enhancing the overall cooling effect. This ensures the engine maintains good heat dissipation performance under various operating conditions. Furthermore, the method of forming the annular water channel 13 by utilizing the recessed end face of the cylinder block 11 eliminates the need for additional structures, avoiding any increase in the engine's external dimensions or complexity, which is beneficial for a compact and lightweight engine design. Simultaneously, the manufacturing process for the annular groove is relatively simple, reducing manufacturing costs and improving efficiency. In addition, the annular groove surrounding the open side of the cylinder bore 113 allows for uniform distribution of coolant around the cylinder bore 113, providing uniform cooling to the cylinder bore 113 wall. This prevents localized overheating or underheating of the cylinder bore 113, reducing thermal deformation caused by uneven heating, ensuring the structural stability and operational accuracy of the engine cylinder block 11, and extending the engine's service life.

[0036] According to one embodiment of this utility model, a plurality of circumferentially spaced connectors 114 are provided on the cylinder body 11. A water inlet hole 14 is formed between adjacent connectors 114, connecting the main water jacket 12 and the annular water channel 13. Providing multiple circumferentially spaced connectors 114 on the cylinder body 11 increases the connection strength between the inner shell 111 and the outer shell 112, thereby improving the structural strength of the cylinder body 11 and enabling the cylinder bore 113 to withstand higher burst pressure, thus improving the safety and service life of the cylinder body 11. The water inlet hole 14 formed between adjacent connectors 114 guides coolant from the main water jacket 12 to the annular water channel 13. The water inlet hole 14 between adjacent connectors 114 allows coolant to enter the annular water channel 13 according to a predetermined path and flow rate, ensuring that the coolant accurately reaches the high-temperature areas requiring cooling, such as the piston ring and the cylinder bore 113 wall radiated by the combustion heat source, achieving precise cooling and improving cooling efficiency.

[0037] Multiple circumferentially spaced water inlets 14 allow coolant to enter the annular water channel 13 evenly from multiple directions, ensuring uniform coolant distribution within the annular water channel 13. This uniform coolant distribution helps prevent localized undercooling or overcooling, resulting in a more even temperature distribution on the cylinder bore 113 wall surface. This reduces thermal deformation of the cylinder bore 113 caused by uneven heating, improves the structural stability and operational accuracy of the engine cylinder block 11, and extends the engine's service life. Furthermore, the multiple water inlets 14 design accelerates the entry of coolant from the main water jacket 12 into the annular water channel 13, increasing the efficiency of coolant circulation throughout the cylinder block 11 and enhancing its heat dissipation effect.

[0038] Furthermore, by utilizing the gaps between the connectors 114 to form the water inlet holes 14, the connection between the main water jacket 12 and the annular water channel 13 can be achieved without the need for additional complex pipes or structures. This optimizes the overall structure of the cooling system, making the internal structure of the engine more compact, reducing space occupation, and facilitating the lightweight and compact design of the engine. At the same time, it also reduces manufacturing difficulty and cost, and improves production efficiency.

[0039] According to one embodiment of this utility model, the flow area of ​​the annular groove is smaller than that of the upper water hole 14. When machining the annular groove, the flow area can be appropriately reduced. Because the flow area of ​​the annular groove is smaller than that of the upper water hole 14, when the coolant flows into the annular groove from the upper water hole 14, the sudden reduction in flow area increases the flow velocity of the coolant. This increased velocity creates a stronger impact force within the annular groove, more effectively flushing high-temperature areas such as the cylinder bore 113 wall, improving heat exchange efficiency, quickly removing heat, reducing local temperature, and minimizing the risk of piston ring wear and oil deterioration. Furthermore, the change in flow area alters the coolant flow state, generating some disturbance within the annular groove. This helps break the coolant boundary layer, allowing for more thorough heat exchange between the coolant and the cylinder bore 113 wall. When the coolant enters the annular water channel 13 from the upper water hole 14, the change in flow state disrupts the stability of the coolant boundary layer, promoting rapid heat transfer from the cylinder bore 113 wall to the coolant, further enhancing the cooling effect.

[0040] The smaller flow area of ​​the annular groove allows the annular water channel 13 to form a narrow flow channel, which can increase the flow rate of the coolant in the annular water channel 13. The rapid flow of coolant can avoid uneven distribution or dead zones of coolant in the annular groove, and make the coolant more evenly distributed to all parts of the annular groove. This ensures that the high-temperature area around the cylinder bore 113 can be adequately cooled, improves the uniformity of cooling, reduces thermal deformation of the cylinder bore 113 caused by local overheating, and ensures the structural stability and operational accuracy of the engine cylinder block 11.

[0041] Furthermore, if the flow area of ​​the annular water channel 13 is too large, it will encroach on the internal space of the cylinder body 11, thereby reducing the wall thickness of the outer shell 112 and the inner shell 111, and reducing the strength of the cylinder body 11.

[0042] According to one embodiment of this utility model, the engine assembly further includes a cylinder head, which is disposed on top of the cylinder block 11. A cylinder head water jacket is disposed within the cylinder head, and the cylinder head water jacket communicates with the annular water channel 13. The cylinder head is also a region in the engine prone to high temperatures. By providing a cylinder head water jacket within the cylinder head and communicating it with the annular water channel 13, coolant can flow from the annular water channel 13 of the cylinder block 11 into the cylinder head water jacket, thereby cooling the cylinder head. The design of the cylinder head water jacket allows coolant to flow between the cylinder block 11 and the cylinder head, forming a cooling system for the entire engine. This not only effectively cools the high-temperature areas of the cylinder block 11 but also reduces the temperature of the cylinder head, improving the overall heat dissipation capacity of the engine assembly and enabling the engine to operate at a suitable temperature. After the cylinder head water jacket is connected to the annular water channel 13, the coolant can form a continuous circulation path between the cylinder block 11 and the cylinder head. During the circulation process, the coolant can continuously absorb the heat generated by the cylinder block 11 and the cylinder head, and transfer the heat out during the circulation process, which improves the heat exchange efficiency, enables the engine to dissipate heat more efficiently, and ensures the stability of engine performance.

[0043] The cylinder head water jacket is connected to the annular water channel 13, which enables the coolant to flow evenly between the cylinder block 11 and the cylinder head, thereby optimizing the overall temperature distribution of the engine. This ensures that the coolant can exchange heat on both the cylinder head and the cylinder block 11, so as to remove the heat inside the cylinder head or cylinder block 11, avoid local overheating of the engine, make the overall temperature of the engine more balanced, reduce the thermal stress changes of engine components caused by uneven temperature, improve the engine's operating stability, and extend the engine's service life.

[0044] According to one embodiment of this utility model, the engine assembly further includes a gasket, which is disposed between the end face of the cylinder block 11 and the cylinder head. The gasket is disposed on the end face of the cylinder block 11 and closes the annular groove. A connecting hole is provided on the gasket to connect the annular water channel 13 and the cylinder head water jacket. The gasket, disposed between the end face of the cylinder block 11 and the cylinder head and closing the annular groove, can form a complete annular water channel 13 and play a certain sealing role. Specifically, during engine operation, the coolant circulates in the annular water channel 13 and the cylinder head water jacket. The gasket can prevent the coolant from leaking out from the connection between the cylinder block 11 and the cylinder head, ensuring the normal operation of the cooling system, avoiding problems such as insufficient engine cooling and component damage caused by coolant leakage, and improving the reliability and safety of engine operation. The gasket has a connecting hole that connects the annular water channel 13 to the cylinder head water jacket. This connecting hole allows for coolant flow between the annular water channel 13 and the cylinder head water jacket. Through the connecting hole, the coolant can smoothly flow from the annular water channel 13 into the cylinder head water jacket along a predetermined path, forming a continuous cooling cycle. This ensures effective cooling of all high-temperature areas of the engine, improves cooling efficiency, and guarantees normal heat dissipation under various operating conditions. Furthermore, the connecting hole design eliminates the need for additional complex pipes or components to achieve coolant flow between the cylinder block 11 and the cylinder head, simplifying the cooling system structure. Simultaneously, the gasket is relatively easy to install. During engine assembly and maintenance, the gasket can be easily replaced and inspected, reducing installation difficulty and maintenance costs, and improving production efficiency.

[0045] According to one embodiment of the present invention, an injector is provided on the cylinder head, the injector is provided with an injection hole facing the inner wall of the cylinder bore 113, and a landing area is formed on the inner wall of the cylinder bore 113 that is directly opposite to the direction of the injection hole. At least a portion of the water inlet hole 14 overlaps with the landing area in the radial direction.

[0046] During engine operation, the fuel injected by the injector forms a landing zone on the inner wall of the cylinder bore 113. Therefore, the temperature of the landing zone is higher than that of other parts of the inner wall of the cylinder bore 113. Thus, when designing the position of the upper water hole 14, at least a part of the upper water hole 14 can overlap with the radial projection of the landing zone, that is, the upper water hole 14 is set on the radial outer periphery of the landing zone. When the coolant enters the annular water channel 13 from the main water jacket 12, the coolant located at the upper water hole 14 can directly cool this high-temperature area of ​​the landing zone. The coolant flows in quickly through the upper water hole 14 and accurately washes the outer periphery of the landing zone, which can remove a lot of heat and effectively lower the temperature of the landing zone. This prevents problems such as thermal deformation of the inner wall of the cylinder bore 113, abnormal wear of piston rings, and deterioration of engine oil caused by local overheating in the landing zone, ensuring the normal operation of the engine and extending the service life of the parts.

[0047] The placement of the water inlet 14 allows for precise cooling of the coolant's landing area, ensuring the temperature within this area remains within a suitable range. A suitable temperature guarantees complete fuel combustion, reducing carbon deposits and pollutant emissions from incomplete combustion and improving combustion efficiency. Simultaneously, a stable temperature environment helps control the stability of the combustion process, reducing abnormal combustion phenomena such as knocking, thereby enhancing engine power output and fuel economy, and enabling the engine to maintain good performance under various operating conditions.

[0048] The overlapping radial projection of the upper water inlet 14 with the landing area enables close coordination between the cooling and combustion systems. The cooling system can target specific areas based on the heat distribution characteristics generated during combustion, ensuring timely and effective dissipation of heat. This not only improves cooling efficiency but also optimizes the combustion process, enhancing overall engine performance. The landing area experiences high temperatures during combustion, making it prone to thermal stress concentration. Precise cooling of this area via the upper water inlet 14 reduces thermal stress levels, minimizing damage to the inner wall of the cylinder bore 113 caused by stress concentration. This helps improve the structural strength and reliability of the engine cylinder bore 113, reducing the risk of cracks, deformations, and other malfunctions caused by thermal stress, and ensuring the engine's stability and safety during long-term operation.

[0049] According to one embodiment of this utility model, multiple cylinder bores 113 are constructed, with a main water jacket 12 surrounding the outer periphery of the multiple cylinder bores 113, and an annular water channel 13 is provided at the top of each cylinder bore 113. By providing an annular water channel 13 around the outer periphery of each cylinder bore 113, and simultaneously surrounding the outer periphery of the multiple cylinder bores 113 with the main water jacket 12, each cylinder bore 113 can have an independent cooling circuit. During engine operation, the combustion conditions and heat generation of different cylinder bores 113 may differ. This independent cooling design ensures that each cylinder bore 113 can obtain appropriate cooling based on its own heat generation. Regardless of the operating conditions of a particular cylinder bore 113, its corresponding main water jacket 12 and annular water channel 13 can precisely remove the heat generated by that cylinder bore 113, preventing localized overheating or insufficient cooling from affecting the overall engine performance and ensuring the stability and consistency of the engine's overall performance. Because each cylinder bore 113 has an independent cooling structure, the coolant can be evenly distributed around each cylinder bore 113, providing uniform cooling and reducing temperature differences between different cylinder bores 113. This independent cooling design allows each cylinder to operate in a similar temperature environment, improving the balance of engine operation and optimizing overall engine performance. The independent and effective cooling structure can promptly reduce the temperature of each cylinder bore 113, minimizing damage to components such as the cylinder bore 113 and piston rings caused by high temperatures. High temperatures accelerate component wear and aging, reducing their service life. Each cylinder bore 113 is equipped with an independent main water jacket 12 and annular water channel 13, effectively controlling the temperature of each cylinder bore 113 and reducing the risk of deformation and cracking of components due to thermal stress. This enhances the overall reliability of the engine, extends its service life, and reduces maintenance costs. For multi-cylinder engines, the load and heat generation of each cylinder vary under different operating conditions. This design, with an independent cooling structure for each cylinder bore 113, allows the cooling system to better adapt to the operating requirements of multi-cylinder engines under different conditions. The coolant can flow in the corresponding main water jacket 12 and annular water channel 13 according to the actual heat generation of each cylinder, flexibly adjusting the cooling intensity of each cylinder, improving the adaptability and flexibility of the cooling system, and ensuring that the engine can maintain good heat dissipation performance under various complex operating conditions.

[0050] According to one embodiment of this utility model, the inner shells 111 of multiple cylinder bores 113 are connected sequentially, and the main water jackets 12 and / or annular water channels 13 on the outer periphery of adjacent two cylinder bores 113 are connected to each other. The connection of the main water jackets 12 and / or annular water channels 13 on the outer periphery of adjacent two cylinder bores 113 allows the coolant to form a continuous flow path in the cooling system of the multiple cylinder bores 113. After the coolant flows out of the main water jacket 12 or annular water channel 13 of one cylinder bore 113, it can smoothly flow into the corresponding cooling structure of the adjacent cylinder bore 113, reducing resistance loss and heat dissipation during the flow process. The continuous flow path can increase the circulation speed and flow rate of the coolant, enabling the coolant to more quickly and effectively remove the heat generated by each cylinder bore 113, thereby improving the cooling efficiency of the entire engine cooling system.

[0051] Multiple cylinder bores 113 and inner shells 111 are connected in sequence, which enhances the structural stability of the cylinder block 11. At the same time, the main water jackets 12 and / or annular water channels 13 on the outer periphery of adjacent cylinder bores 113 are connected to each other, so that the flow of coolant on the outer periphery of adjacent cylinder bores 113 is interconnected. The coolant can flow on the outer periphery of multiple cylinder bores 113 and exchange heat with each cylinder bore 113, ensuring that the temperature of each cylinder bore 113 in the engine is within a suitable range, so that the engine can operate at a suitable temperature and improve engine performance.

[0052] The connection design of adjacent main water jackets 12 and / or annular water channels 13 simplifies the layout structure of the cooling system. It eliminates the need for complex coolant inlets and outlets for each cylinder bore 113. Instead, the main water jackets 12 around the outer periphery of multiple cylinder bores 113 can be connected in series, and the annular water channels 13 around the outer periphery of multiple cylinder bores 113 can also be connected in series. Coolant can be added through a single inlet, making the cooling system more compact and integrated, reducing the number of parts and connecting pipes, and reducing the structural complexity of the engine.

[0053] The vehicle according to this utility model is briefly described below.

[0054] The vehicle according to this utility model includes the engine assembly in the above embodiments. Since the vehicle according to this utility model includes the engine assembly in the above embodiments, the engine assembly improves the structural strength of the cylinder bore 113 by providing a connecting member 114 between the inner shell 111 and the outer shell 112 of the cylinder block 11, enabling the engine to withstand greater explosion pressure without increasing the wall thickness of the cylinder block 11, resulting in lighter weight. At the same time, the cooperation between the main water jacket 12 and the annular water channel 13 can improve the engine's heat dissipation efficiency without affecting the structural strength of the cylinder block 11, allowing the engine to operate at a suitable temperature, thereby improving the vehicle's power performance and fuel economy.

[0055] 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.

[0056] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0057] In the description of this utility model, "multiple" means two or more.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 assembly, characterized in that, include: A cylinder body (11) is provided with an outer shell (112) and an inner shell (111). The inner shell (111) is arranged around and defines a cylinder bore (113) that opens toward the end face of the cylinder body (11). The outer shell (112) is arranged around the inner shell (111). A connector (114) is provided between the outer shell (112) and the inner shell (111) to support the inner shell (111) on the outer shell (112). A main water jacket (12) is disposed between the outer shell (112) and the inner shell (111) and surrounds at least a portion of the outer periphery of the cylinder bore (113). The main water jacket (12) is adapted to circulate coolant to cool the cylinder block (11). An annular water channel (13) is formed between the outer shell (112) and the inner shell (111), located on the end face of the cylinder body (11) and surrounding the cylinder bore (113). The annular water channel (13) is disposed on the top of the main water jacket (12) and communicates with the main water jacket (12).

2. The engine assembly according to claim 1, characterized in that, The cylinder body (11) has a recessed annular groove on its end face, the annular groove surrounds the outer periphery of the open side of the cylinder bore (113), and the annular water channel (13) is defined in the annular groove.

3. The engine assembly according to claim 2, characterized in that, The cylinder body (11) is provided with a plurality of connectors (114) spaced apart in the circumferential direction, and a water inlet (14) is formed between two adjacent connectors (114) to connect the main water jacket (12) and the annular water channel (13).

4. The engine assembly according to claim 3, characterized in that, The flow area of ​​the annular groove is smaller than the flow area of ​​the water inlet (14).

5. The engine assembly according to claim 4, characterized in that, Also includes: The cylinder head is located on the top of the cylinder block (11), and a cylinder head water jacket is provided inside the cylinder head, which is connected to the annular water channel (13).

6. The engine assembly according to claim 5, characterized in that, Also includes: A gasket is provided between the end face of the cylinder body (11) and the cylinder head. The gasket is provided on the end face of the cylinder body (11) and closes the annular groove. A connecting hole is provided on the gasket to connect the annular water channel (13) with the cylinder head water jacket.

7. The engine assembly according to claim 6, characterized in that, The cylinder head is provided with an injector, the injector is provided with an injection hole facing the inner wall of the cylinder bore (113), the inner wall of the cylinder bore (113) is formed with a landing area facing the direction of the injection hole, and at least a portion of the water inlet (14) overlaps with the landing area in the radial direction.

8. The engine assembly according to claim 1, characterized in that, The cylinder bore (113) is constructed in multiple ways, and the main water jacket (12) is arranged around the outer periphery of the multiple cylinder bores (113). Each cylinder bore (113) has an annular water channel (13) at its top.

9. The engine assembly according to claim 8, characterized in that, The inner shells (111) of the plurality of cylinder bores (113) are connected in sequence, and the main water jacket (12) and / or the annular water channel (13) on the outer periphery of two adjacent cylinder bores (113) are connected to each other.

10. A vehicle, characterized in that, Includes the engine assembly described in any one of claims 1-9.

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