Engine assembly and vehicle

Abstract

The utility model discloses an engine assembly and vehicle. According to the utility model's engine assembly, including cylinder body, cylinder cover and water inlet, the cylinder body is provided with shell and inner shell, and the inner shell is set around and defines the cylinder hole that is open to the cylinder body end face, and the shell is set around the inner shell and forms the main water jacket, the cylinder cover is set in the cylinder body top, and the cylinder cover is provided with the cylinder cover water jacket in, and the main water jacket includes: the water channel of air inlet side and the water channel of exhaust side, and the first liquid inlet end of air inlet side water channel and the second liquid inlet end of exhaust side water channel communicate with each other, the water inlet is set in the cylinder body, and the water inlet is respectively communicated with the first liquid inlet end and the second liquid inlet end, and the communication area of water inlet and the first liquid inlet end is greater than the communication area of water inlet and the second liquid inlet end. According to the utility model's engine assembly, the communication area of water inlet and the second liquid inlet end is greater than the communication area of water inlet and the first liquid inlet end through the design, can guide more coolant into the water channel of exhaust side, and the heat dissipation efficiency of engine is improved.

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 is designed so that the communication area between the water inlet and the second inlet is larger than the communication area between the water inlet and the first inlet. This allows more coolant to be introduced into the exhaust-side water channel, precisely cooling the higher-temperature exhaust side of the engine and improving the engine's heat dissipation efficiency.

[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, a cylinder head, and a water inlet. 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 and forms a main water jacket. The cylinder head is disposed on the top of the cylinder block, and a cylinder head water jacket is disposed inside the cylinder head. The main water jacket includes an intake side water passage and an exhaust side water passage. The first liquid inlet end of the intake side water passage and the second liquid inlet end of the exhaust side water passage are connected to each other. The water inlet is disposed on the cylinder block and is connected to the first liquid inlet end and the second liquid inlet end respectively. The communication area between the water inlet and the first liquid inlet end is larger than the communication area between the water inlet and the second liquid inlet end.

[0006] The engine assembly of this invention, by designing the connection area between the water inlet and the second liquid inlet to be larger than the connection area between the water inlet and the first liquid inlet, can introduce more coolant into the exhaust-side water passage, precisely cooling the higher-temperature exhaust side of the engine. This improves the engine's heat dissipation efficiency and ensures that the components remain within a suitable temperature range under high explosion pressure and high thermal efficiency operating conditions. This reduces the probability of performance degradation and malfunctions caused by overheating, thereby improving the engine's reliability and durability. It also achieves a reasonable distribution of coolant, eliminating the need to increase the water pump flow rate to solve the heat dissipation problem. This reduces the energy consumed by the engine due to the extra work done by the water pump, improving the engine's fuel economy and power output efficiency.

[0007] According to one embodiment of the present invention, the air intake side water channel and the exhaust side water channel are symmetrically arranged about a center line, the center line passes through the water inlet, and the water inlet is offset towards the second liquid inlet end about the center line.

[0008] According to one embodiment of the present invention, the main water jacket further includes: a first water inlet channel and a second water inlet channel, wherein the first water inlet channel is disposed in the intake side water channel and communicates with the cylinder head water jacket; the second water inlet channel is disposed in the exhaust side water channel and communicates with the cylinder head water jacket; wherein the flow area of ​​the second water inlet channel is larger than the area of ​​the first water inlet channel.

[0009] According to one embodiment of the present invention, the inner shell is provided with a plurality of cylinder holes, the first water supply channel includes a plurality of first water supply holes, the plurality of first water supply holes are disposed on the upper side of the intake side water channel, and at least two first water supply holes are provided at intervals along the edge of each cylinder hole; the second water supply channel includes a plurality of second water supply holes, the plurality of second water supply holes are disposed on the upper side of the exhaust side water channel, and at least two second water supply holes are provided at intervals along the edge of each cylinder hole.

[0010] According to one embodiment of the present invention, in at least two cylinder holes, the cylinder hole closer to the water inlet is the first cylinder hole, and the cylinder hole farther from the water inlet is the second cylinder hole; wherein, the cross-sectional area of ​​the first water inlet hole and / or the second water inlet hole at the corresponding position on the outer periphery of the first cylinder hole is smaller than the cross-sectional area of ​​the first water inlet hole and / or the second water inlet hole at the corresponding position on the outer periphery of the second cylinder hole.

[0011] According to one embodiment of the present invention, the inner shell is provided with a plurality of cylinder bores, and a coolant channel is formed between two adjacent cylinder bores. The inlet end of the coolant channel is connected to the exhaust side water channel, and the outlet end of the coolant channel is connected to the cylinder head water jacket.

[0012] According to one embodiment of the present invention, the coolant channel is formed with a plurality of coolant channel inlets, and the plurality of coolant channel inlets are arranged at intervals in the height direction of the exhaust side water channel.

[0013] According to one embodiment of the present invention, the coolant passage includes: a first flow path and a second flow path, one end of the first flow path is connected to the exhaust-side water channel and extends obliquely toward the top to connect the other end of the first flow path to the cylinder head water channel; one end of the second flow path is connected to the exhaust-side water channel and extends obliquely toward the bottom to connect the other end of the second flow path to the first flow path.

[0014] According to one embodiment of the present invention, the second flow path is constructed as a plurality of such paths spaced apart from each other, and the plurality of second flow paths are respectively connected to the first flow path.

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

[0016] The vehicle according to this utility model includes the engine assembly of the above embodiments. Since the vehicle according to this utility model is equipped with the engine assembly of the above embodiments, the engine assembly connects the water inlet to the intake side water passage and the exhaust side water passage respectively. Due to the higher temperature on the exhaust side of the engine, the cross-sectional area of ​​the water inlet connecting to the exhaust side water passage is limited to be larger, so that more coolant can enter the exhaust side water passage to specifically cool the exhaust side of the engine, thereby improving the heat dissipation efficiency of the engine. This makes the temperature of the entire engine more uniform, ensuring that the engine operates at a suitable temperature, thereby improving the power performance and fuel economy of the vehicle.

[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 main water jacket according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a cylinder body according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the main water jacket according to an embodiment of the present invention;

[0022] Figure 4This is a schematic diagram of the cooperation between the main water jacket and the cylinder head water jacket according to an embodiment of the present invention.

[0023] Figure label:

[0024] Cylinder block 11, inner shell 111, outer shell 112, cylinder bore 113;

[0025] Main water jacket 12;

[0026] Air intake side water channel 121, first liquid inlet end 1211, exhaust side water channel 122, second liquid inlet end 1221;

[0027] Inlet 13;

[0028] First water inlet hole 141, second water inlet hole 142;

[0029] Coolant passage 15, first flow path 151, second flow path 152;

[0030] Cylinder head water jacket 16, center line 101. Detailed Implementation

[0031] 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.

[0032] 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 deterioration. Therefore, it is necessary to optimize the engine block design to improve cooling efficiency and reduce high-temperature damage. In related technologies, to improve cooling efficiency, a main water jacket is typically installed around the cylinder bore, using coolant to dissipate heat. However, the temperature distribution on the exhaust and intake sides of the engine cylinder bore is inconsistent. Relying solely on the main water jacket for coolant flow is not ideal for cooling the cylinder bore. Therefore, the coolant flow needs to be rationally planned to precisely cool the high-temperature areas of the engine.

[0033] The following is for reference. Figures 1-4 This invention describes an engine assembly according to an embodiment of the present invention.

[0034] The engine assembly according to this utility model includes a cylinder block 11, a cylinder head, and a water inlet 13. 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 and forms a main water jacket 12. The cylinder head is provided on the top of the cylinder block 11, and a cylinder head water jacket 16 is provided inside the cylinder head. The main water jacket 12 includes an intake side water passage 121 and an exhaust side water passage 122. The first liquid inlet end 1211 of the intake side water passage 121 and the second liquid inlet end 1221 of the exhaust side water passage 122 are connected to each other. The water inlet 13 is provided on the cylinder block 11 and is connected to the first liquid inlet end 1211 and the second liquid inlet end 1221 respectively. The communication area between the water inlet 13 and the second liquid inlet end 1221 is larger than the communication area between the water inlet 13 and the first liquid inlet end 1211.

[0035] The engine assembly according to this utility model includes a cylinder block 11 and a cylinder head. The cylinder block 11 has an inner shell 111 and an outer shell 112. The inner shell 111 surrounds and defines a cylinder bore 113 that opens toward the end face of the cylinder block 11, allowing the engine piston to reciprocate within the cylinder bore 113. The outer shell 112 surrounds the inner shell 111, and a main water jacket 12 is formed between the outer shell 112 and the inner shell 111. The main water jacket 12 surrounds at least a portion of the outer periphery of the cylinder bore 113, and coolant can flow through 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 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, which improves 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.

[0036] A cylinder head is provided on the top of the cylinder block 11. The cylinder head can close the open opening of the cylinder bore 113. A cylinder head water jacket 16 is provided inside the cylinder head. The cylinder head water jacket 16 can communicate with the main water jacket 12. The coolant in the main water jacket 12 can enter the cylinder head water jacket 16 for cylinder head heat dissipation, which further improves the engine's heat dissipation capacity.

[0037] The main water jacket 12 is provided with an intake-side water channel 121 and an exhaust-side water channel 122. The intake-side water channel 121 is adjacent to the engine intake side, while the exhaust-side water channel 122 is adjacent to the engine exhaust side. The inlet of the intake-side water channel 121 is the first inlet end 1211, and the inlet of the exhaust-side water channel 122 is the second inlet end 1221. The first inlet end 1211 and the second inlet end 1221 are connected to each other. The coolant entering the main water jacket 12 can be split at the first inlet end 1211 and the second inlet end 1221, and the split coolant enters the exhaust-side water channel 122 and the intake-side water channel 121 respectively for heat exchange. In the design, the first inlet end 1211 and the second inlet end 1221 can be designed as a cavity that is connected to each other. Through the cavity, the coolant can be quickly delivered to the top of the main water jacket 12 and flow towards the rear end, which improves the flow rate of the coolant.

[0038] The water inlet 13 is located on the cylinder block 11 and is connected to the first inlet end 1211 and the second inlet end 1221 respectively. A water pump can be installed at the water inlet 13 to supply coolant, allowing the coolant to enter the main water jacket 12 through the water inlet 13 and then be diverted into the exhaust-side water passage 122 and the intake-side water passage 121. It should be noted that the communication area between the water inlet 13 and the second inlet end 1221 is larger than the communication area between the water inlet 13 and the first inlet end 1211. During engine operation, the exhaust side typically experiences a higher heat load than the intake side due to combustion and other factors. Therefore, the water inlet 13 and the second inlet end 1221... The larger connecting area of ​​1 allows more coolant to enter the exhaust-side water passage 122 for heat exchange on the exhaust side of the engine. This enables the engine assembly to rationally distribute the coolant flow according to the different heat load distributions on the exhaust and intake sides. More coolant entering the exhaust-side water passage 122 can more effectively cool the exhaust side with higher heat load, avoiding problems such as cylinder bore 113 deformation, increased piston ring wear, and accelerated oil deterioration caused by excessively high exhaust temperatures. This ensures stable engine operation under high temperature and high pressure conditions and improves the engine's heat exchange efficiency by targeting high-temperature areas of the engine for directional heat exchange and cooling.

[0039] By designing the water inlet 13 and the second inlet end 1221 to have a larger connection area than the water inlet 13 and the first inlet end 1211, the engine assembly can direct more coolant into the exhaust-side water passage 122. This allows for precise cooling of the higher-temperature exhaust side of the engine, improving the engine's heat dissipation efficiency and making the overall engine temperature more uniform. This ensures that the components remain within a suitable temperature range even under high pressure and high thermal efficiency operating conditions, reducing performance degradation and the probability of malfunctions due to overheating. Consequently, the engine's reliability and durability are improved. This achieves a reasonable distribution of coolant, eliminating the need to increase the water pump flow rate to solve the heat dissipation problem and without affecting the structural strength of the engine block 11. It also reduces the energy consumed by the engine due to the extra work done by the water pump, further improving the engine's heat dissipation efficiency, and ultimately enhancing the engine's fuel economy and power output efficiency.

[0040] According to one embodiment of the present invention, such as Figure 1 As shown, the intake-side water passage 121 and the exhaust-side water passage 122 are symmetrically arranged about the centerline 101, which passes through the water inlet 13. The water inlet 13 is offset towards the second inlet end 1221 about the centerline 101. During engine operation, the exhaust side experiences a significantly higher heat load than the intake side due to factors such as the discharge of high-temperature exhaust gases generated by combustion. The offset of the water inlet 13 towards the second inlet end 1221 of the exhaust-side water passage 122 about the centerline 101 allows the coolant to flow more quickly to the exhaust side, enabling more coolant to directly enter the exhaust-side water passage 122. This provides focused cooling for the high-heat-load exhaust side. By precisely matching the heat load distribution, the temperature on the exhaust side can be effectively reduced, improving the engine's heat dissipation efficiency and reducing problems such as cylinder bore 113 deformation, increased piston ring wear, and oil deterioration caused by high temperatures. This ensures stable engine operation under high-temperature and high-pressure conditions.

[0041] According to one embodiment of this utility model, the main water jacket 12 further includes: a first water inlet channel and a second water inlet channel. The first water inlet channel is located in the intake side water passage 121 and communicates with the cylinder head water jacket 16; the second water inlet channel is located in the exhaust side water passage 122 and communicates with the cylinder head water jacket 16; wherein, the flow area of ​​the second water inlet channel is larger than the area of ​​the first water inlet channel. When the engine is running, the exhaust side has a higher heat load than the intake side due to factors such as the discharge of high-temperature exhaust gas. The larger flow area of ​​the second water inlet channel allows more coolant to enter the area of ​​the cylinder head water jacket 16 corresponding to the exhaust side through the second water inlet channel, thereby more effectively cooling the cylinder head on the exhaust side with a higher heat load. This helps to reduce the temperature of the cylinder head on the exhaust side, reduce problems such as cylinder head deformation and seal failure caused by high temperature, and ensure the stable operation of the engine under high-temperature conditions. Furthermore, the larger flow area of ​​the second water inlet channel means that the flow resistance of the coolant within the second water inlet channel is relatively small, resulting in a larger coolant flow rate and faster flow velocity. This allows the coolant to quickly enter the area corresponding to the exhaust side of the cylinder head water jacket 16 and carry away the heat generated by the exhaust side cylinder head, improving heat dissipation efficiency and preventing heat accumulation on the exhaust side cylinder head. This further reduces the cylinder head temperature and improves the reliability and durability of the engine. Reasonable distribution of coolant flow into different areas of the cylinder head water jacket 16 allows for targeted cooling based on different temperature locations in the cylinder head, improving the engine's heat dissipation efficiency. It also makes the overall temperature distribution of the cylinder head more uniform. A uniform temperature distribution helps ensure the precision of the fit between engine components, reducing wear and malfunctions caused by temperature differences. It also helps improve engine operating efficiency and fuel economy.

[0042] According to one embodiment of the present invention, the inner shell 111 is provided with a plurality of cylinder bores 113, the first water supply channel includes a plurality of first water supply holes 141, the plurality of first water supply holes 141 are disposed on the upper side of the intake side water channel 121, and at least two first water supply holes 141 are provided at intervals along the edge of each cylinder bore 113; the second water supply channel includes a plurality of second water supply holes 142, the plurality of second water supply holes 142 are disposed on the upper side of the exhaust side water channel 122, and at least two second water supply holes 142 are provided at intervals along the edge of each cylinder bore 113.

[0043] The engine assembly has at least two first water inlet holes 141 and second water inlet holes 142 spaced apart at the edge of each cylinder bore 113. This allows coolant to enter the corresponding area of ​​the cylinder head water jacket 16 from multiple locations, achieving comprehensive cooling coverage of the cylinder head. Whether on the intake or exhaust side, coolant can enter the cylinder head water jacket 16 from different locations around the cylinder bore 113, avoiding cooling dead zones and ensuring effective cooling of all parts of the cylinder head. This prevents cylinder head deformation and cracking caused by localized overheating, improving engine reliability and durability. Furthermore, the multiple water inlet holes help to evenly distribute the coolant within the cylinder head water jacket 16. The simultaneous entry of coolant from multiple locations results in a more uniform distribution within the cylinder head water jacket 16, reducing temperature differences between different areas of the cylinder head. This uniform temperature distribution helps reduce thermal stress in the cylinder head, minimizes thermal deformation, ensures the fit precision between engine components, and improves engine efficiency and performance.

[0044] The design of multiple water inlets also increases the number of channels for coolant to enter the cylinder head water jacket 16, thereby increasing the total flow rate of coolant. More coolant can carry away the heat generated by the cylinder head more quickly, improving cooling efficiency and enabling the engine to reduce the cylinder head temperature to a suitable range in a short time. Especially when the engine is running under high load, it can effectively prevent the cylinder head from overheating.

[0045] The engine assembly features multiple coolant inlets located on the upper sides of the intake-side water passage 121 and the exhaust-side water passage 122. This fully utilizes the space structure of the engine block 11 without causing excessive interference to other engine components. It also ensures that coolant can smoothly enter the cylinder head water jacket 16, achieving a good match between the cooling function and the overall engine structure. Multiple coolant inlets are located on the edge of each cylinder bore 113, increasing the redundancy of the cooling system. Even if some coolant inlets become blocked or damaged, the others can still ensure normal coolant flow, continuing to cool the cylinder head. This improves the reliability and stability of the cooling system and reduces the risk of engine problems due to cooling system malfunctions.

[0046] In some embodiments, the diameter of the second water inlet hole 142 can be larger than the diameter of the first water inlet hole 141, which can increase the amount of coolant entering the cylinder head water jacket 16 from the exhaust side water passage 122 and improve the heat dissipation efficiency of the engine exhaust side.

[0047] According to one embodiment of the present invention, among at least two cylinder holes 113, the cylinder hole 113 on the side closer to the water inlet 13 is the first cylinder hole, and the cylinder hole 113 on the side farther from the water inlet 13 is the second cylinder hole; wherein, the cross-sectional area of ​​the first water inlet hole 141 and / or the second water inlet hole 142 at the corresponding position on the outer periphery of the first cylinder hole is smaller than the cross-sectional area of ​​the first water inlet hole 141 and / or the second water inlet hole 142 at the corresponding position on the outer periphery of the second cylinder hole.

[0048] In the engine cooling system, after the coolant enters through inlet 13, it first passes through the first cylinder bore area near inlet 13, and then flows to the second cylinder bore area away from inlet 13. As the coolant continuously absorbs heat during its flow, its temperature gradually increases, thus reducing its cooling capacity for the cylinder head. The smaller cross-sectional area of ​​the water inlet holes on the outer periphery of the first cylinder bore limits the coolant flow near inlet 13, preventing excessively low temperatures in that area due to excessive flow and velocity. This allows more coolant to flow to the subsequent second cylinder bore area. Conversely, the larger cross-sectional area of ​​the water inlet holes on the outer periphery of the second cylinder bore ensures sufficient coolant flow away from inlet 13, compensating for the reduced cooling capacity caused by the increased coolant temperature. This adapts to the temperature gradient changes during coolant flow, resulting in a more uniform temperature distribution throughout the cylinder head.

[0049] In some embodiments, the cross-sectional area of ​​the first water inlet hole 141 and / or the second water inlet hole 142 at the corresponding position on the outer periphery of the first cylinder bore is smaller than the cross-sectional area of ​​the first water inlet hole 141 and / or the second water inlet hole 142 at the corresponding position on the outer periphery of the second cylinder bore. The corresponding position can be simply understood as a position on the outer periphery of the first cylinder bore that is the same as the position on the outer periphery of the second cylinder bore. That is, the cross-sectional area of ​​the first water inlet hole 141 (second water inlet hole 142) at a certain position on the outer periphery of the first cylinder bore is smaller than the cross-sectional area of ​​the first water inlet hole 141 (second water inlet hole 142) at the same position on the outer periphery of the second cylinder bore.

[0050] In some embodiments, from the water inlet hole to the rear end of the cylinder block 11, the diameters of the first water inlet hole 141 and the second water inlet hole 142 increase, which can guide the coolant in the main water jacket 12 to flow from the front end to the rear end of the cylinder block 11, and the coolant in the cylinder head water jacket 16 to flow from the rear end to the front end, thereby improving the uniformity of the coolant flow rate distribution in the main water jacket 12.

[0051] According to one embodiment of this utility model, the inner shell 111 is provided with a plurality of cylinder bores 113, and a coolant passage 15 is formed between two adjacent cylinder bores 113. The inlet end of the coolant passage 15 is connected to the exhaust-side water passage 122, and the outlet end of the coolant passage 15 is connected to the cylinder head water jacket 16. During engine operation, the area between adjacent cylinder bores 113 is prone to insufficient cooling due to the lack of a coolant flow path. Therefore, the engine assembly can form a coolant passage 15 between adjacent cylinder bores 113 and connect the inlet end of the coolant passage 15 to the exhaust-side water passage 122, so that the coolant in the exhaust-side water passage 122 can directly enter the coolant passage 15, effectively eliminating the cooling blind spot and avoiding problems such as deformation and strength reduction in the area between cylinder bores 113 caused by local overheating, thus ensuring the structural integrity and stability of the engine block 11. The coolant passage 15 connects the exhaust-side water passage 122 to the cylinder head water jacket 16, expanding the coolant flow path and allowing the coolant to cover the engine block 11 and cylinder head area more extensively. The coolant enters the coolant passage 15 from the exhaust side water passage 122 and then flows to the cylinder head water jacket 16, forming a more complete cooling circulation system and improving the overall cooling effect of the coolant on the engine. This design allows the coolant to be rationally distributed according to the heat load requirements of different areas during its flow, ensuring that each area receives an appropriate amount of coolant. This avoids excessive concentration of coolant in some areas while insufficient coolant is available in others, thus improving the efficiency and reliability of the cooling system.

[0052] According to one embodiment of this utility model, the coolant passage 15 has multiple coolant passage 15 inlets, which are spaced apart along the height of the exhaust-side water passage 122. The multiple spaced inlets expand the coverage area of ​​the coolant passage 15, allowing the coolant to flow more comprehensively through all parts between adjacent cylinder bores 113. Coolant can flow into areas near both the top and bottom of the exhaust-side water passage 122, effectively eliminating cooling dead zones, improving cooling efficiency, and further reducing the risk of overheating and malfunctions in the area between cylinder bores 113. Furthermore, since the exhaust side temperature of the engine is relatively high, the spaced arrangement of multiple coolant passage 15 inlets along the height of the exhaust-side water passage 122 increases the flow path of the coolant on the exhaust side, increases the heat exchange area, and improves heat exchange efficiency, thereby enhancing the cooling effect of the coolant on the engine exhaust side.

[0053] According to one embodiment of the present invention, the coolant passage 15 includes: a first flow path 151 and a second flow path 152. One end of the first flow path 151 is connected to the exhaust-side water passage 122 and extends obliquely upwards to connect the other end of the first flow path 151 to the cylinder head water passage. One end of the second flow path 152 is connected to the exhaust-side water passage 122 and extends obliquely downwards to connect the other end of the second flow path 152 to the first flow path 151. The first flow path 151 extends obliquely upwards and connects to the cylinder head water passage, while the second flow path 152 extends obliquely downwards and connects to the first flow path 151. This allows the coolant to flow from the exhaust-side water passage 122 in multiple directions. During the flow, the coolant can cover different heights in the area between adjacent cylinder bores 113, including areas near the top and bottom. This effectively expands the coverage area of ​​the coolant, avoids local overheating problems caused by the coolant not reaching certain areas, and ensures that the entire area between adjacent cylinder bores 113 is adequately cooled.

[0054] The first flow path 151 and the second flow path 152 work together to form a multi-directional coolant flow path. After the coolant enters from the exhaust-side water passage 122, part of it flows upward along the first flow path 151 towards the cylinder head water passage, while the other part flows downward along the second flow path 152 and merges with the first flow path 151. This creates two coolant flow paths in the coolant passage 15 near the engine exhaust side, increasing the heat exchange area and further improving the heat exchange efficiency of the coolant on the exhaust side. The coolant in the second flow path 152 and the coolant in the first flow path 151 converge and flow together into the cylinder head water jacket 16, increasing the path for coolant to enter the cylinder head water passage. This increases the flow rate of coolant into the cylinder head water jacket 16 and improves the cooling effect of the coolant on the cylinder head.

[0055] According to one embodiment of the present invention, the second flow path 152 is constructed as a plurality of spaced-apart paths, each of which is connected to the first flow path 151. Constructing the coolant second flow paths 152 as a plurality of spaced-apart paths, each connected to the first coolant flow path 151, increases the path for coolant to enter the coolant channel 15, allowing more coolant to simultaneously enter the coolant channel 15 from the exhaust-side water passage 122. This increases the heat exchange area between the coolant and the engine at the engine exhaust side, improving the engine's heat dissipation efficiency. Simultaneously, the multiple spaced-apart second flow paths 152 can cover a wider area, ensuring that coolant reaches different positions in the area between adjacent cylinder bores 113, avoiding cooling dead zones and ensuring that the entire area is adequately cooled.

[0056] The vehicle according to this utility model is briefly described below.

[0057] The vehicle according to this utility model includes the engine assembly in the above embodiments. Since the vehicle according to this utility model is equipped with the engine assembly in the above embodiments, the engine assembly connects the water inlet 13 to the intake side water passage 121 and the exhaust side water passage 122 respectively. Because the exhaust side temperature of the engine is higher, the cross-sectional area of ​​the water inlet 13 connected to the exhaust side water passage 122 is limited to be larger, so that more coolant can enter the exhaust side water passage 122 to specifically cool the exhaust side of the engine, thereby improving the heat dissipation efficiency of the engine. This makes the temperature of the entire engine more uniform, ensuring that the engine operates at a suitable temperature, thereby improving the power performance and fuel economy of the vehicle.

[0058] 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.

[0059] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0060] In the description of this utility model, "multiple" means two or more.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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 by, include: The 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) and forms a main water jacket (12). Cylinder head, the cylinder head is disposed on the top of the cylinder body (11), and a cylinder head water jacket (16) is disposed inside the cylinder head; The main water jacket (12) includes: The intake side water channel (121) and the exhaust side water channel (122) are connected to each other. Water inlet (13) is provided on the cylinder body (11). The water inlet (13) is connected to the first liquid inlet end (1211) and the second liquid inlet end (1221) respectively. The connection area between the water inlet (13) and the second liquid inlet end (1221) is greater than the connection area between the water inlet (13) and the first liquid inlet end (1211).

2. The engine assembly of claim 1, wherein, The air intake side water channel (121) and the exhaust side water channel (122) are symmetrically arranged about the center line (101), the center line (101) passes through the water inlet (13), and the water inlet (13) is offset about the center line toward the second liquid inlet end (1221).

3. The engine assembly of claim 2, wherein, The main water jacket (12) also includes: The first water supply channel is located in the intake side water channel (121) and is connected to the cylinder head water jacket (16); The second water inlet channel is located in the exhaust side water channel (122) and communicates with the cylinder head water jacket (16); wherein The flow area of ​​the second water supply channel is larger than that of the first water supply channel.

4. The engine assembly of claim 3, wherein, The inner shell (111) is provided with a plurality of cylinder holes (113), and the first water supply channel includes a plurality of first water supply holes (141). The plurality of first water supply holes (141) are provided on the upper side of the air intake side water channel (121), and at least two first water supply holes (141) are provided at intervals along the edge of each cylinder hole (113). The second water supply channel includes a plurality of second water supply holes (142), which are disposed on the upper side of the exhaust side water channel (122), and at least two second water supply holes (142) are provided at intervals along the edge of each cylinder bore (113).

5. The engine assembly of claim 4, wherein, Of the at least two cylinder bores (113), the cylinder bore (113) closer to the water inlet (13) is the first cylinder bore (113), and the cylinder bore (113) farther from the water inlet (13) is the second cylinder bore (113); wherein The cross-sectional area of ​​the first water inlet hole (141) and / or the second water inlet hole (142) at the corresponding position on the outer periphery of the first cylinder bore (113) is smaller than the cross-sectional area of ​​the first water inlet hole (141) and / or the second water inlet hole (142) at the corresponding position on the outer periphery of the second cylinder bore (113).

6. The engine assembly of claim 1, wherein, The inner shell (111) is provided with a plurality of cylinder bores (113), and a coolant passage (15) is formed between two adjacent cylinder bores (113). The inlet end of the coolant passage (15) is connected to the exhaust side water passage (122), and the outlet end of the coolant passage (15) is connected to the cylinder head water jacket (16).

7. The engine assembly of claim 6, wherein, The coolant passage (15) has multiple coolant passage (15) inlets, which are spaced apart in the height direction of the exhaust side water passage (122).

8. The engine assembly of claim 7, wherein, The coolant passage (15) includes: A first flow path (151) is provided, one end of which is connected to the exhaust side water passage (122) and extends obliquely toward the top to connect the other end of the first flow path (151) to the cylinder head water passage. A second flow path (152) is provided, one end of which is connected to the exhaust side channel (122) and extends obliquely toward the bottom to connect the other end of the second flow path (152) to the first flow path (151).

9. The engine assembly according to claim 8, characterized in that, The second flow path (152) is constructed as a plurality of such paths spaced apart from each other, and the plurality of second flow paths (152) are respectively connected to the first flow path (151).

10. A vehicle characterized by comprising: Includes the engine assembly described in any one of claims 1-9.

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