Engine assembly and vehicle

Abstract

The utility model discloses an engine assembly and vehicle relates to engine technical field. Engine assembly includes cylinder body, drive chain, tension guide rail and tensioner, and the end face of one end of cylinder body constructs as mounting surface, drive chain sets up in mounting surface, tension guide rail movably sets up in mounting surface and is used for with drive chain contact, and tensioner sets up in mounting surface and is connected with tension guide rail to be used for driving tension guide rail removal, wherein the inside of cylinder body forms with branch oil circuit that main oil circuit communicates, and branch oil circuit communicates with tensioner and forms oil circuit export in mounting surface, and oil circuit export is towards drive chain. According to the engine assembly of the utility model, branch oil circuit supplies oil for tensioner and oil circuit export, reduces oil circuit arrangement complexity and processing difficulty, reduces manufacturing cost and production cycle.

Description

Technical Field

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

[0002] In chain-driven timing systems, the tensioner plays a crucial role in maintaining the appropriate tension of the drive chain. To ensure the tensioner can operate continuously and stably, and to effectively lubricate the drive chain, a dedicated oil passage is usually designed for the tensioner to deliver oil.

[0003] In related technologies, when constructing a timing drive system, the normal operation of the timing drive system involves the coordinated work of multiple components. The engine block needs to take into account the installation layout of components such as the drive chain, movable tension guide, tensioner, and lubrication nozzles. The installation of each component is interconnected and affects each other.

[0004] Due to the factors mentioned above, the hydraulic circuit design becomes extremely complex. The hydraulic circuit needs to provide the necessary lubricating and cooling fluid for components such as the tensioner and lubrication nozzles. To meet the lubrication requirements of different components, multiple independent and complex hydraulic circuits are often required. This complex hydraulic circuit design makes the engine block manufacturing process extremely cumbersome, increasing production costs and time.

[0005] Therefore, the key to reducing the difficulty of engine block manufacturing, controlling production costs, and shortening the production cycle lies in how to rationally arrange the various components to meet the requirements of efficient and coordinated operation of the timing transmission system while effectively simplifying the oil circuit design. Utility Model Content

[0006] 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 the engine assembly of this invention, oil is supplied to the tensioner and oil outlet via branch oil passages, reducing the complexity of the oil passage layout and processing difficulty, and lowering manufacturing costs and production cycle.

[0007] This utility model also proposes a vehicle having the above-mentioned engine components.

[0008] According to the present invention, the engine assembly includes: a cylinder block, one end face of which is configured as a mounting surface; a drive chain disposed on the mounting surface; a tensioning guide rail movably disposed on the mounting surface and used to contact the drive chain; and a tensioner disposed on the mounting surface and connected to the tensioning guide rail for driving the tensioning guide rail to move; wherein a branch oil passage communicating with a main oil passage is formed inside the cylinder block, the branch oil passage communicating with the tensioner and forming an oil passage outlet on the mounting surface, the oil passage outlet facing the drive chain.

[0009] According to the engine assembly of this utility model, by setting a branch oil passage connected to the main oil passage inside the cylinder block, the branch oil passage is connected to the tensioner on one hand, and forms an oil passage outlet on the mounting surface on the other hand. There is no need to introduce oil passages separately for the tensioner and the oil passage outlet, which effectively reduces the complexity of the oil passage layout, reduces the difficulty of oil passage processing, and thus achieves a reduction in manufacturing cost and production cycle.

[0010] According to some embodiments of the present invention, the engine assembly further includes: a water pump, the water pump being disposed on the mounting surface and located on one side of the drive chain, and the tensioner and the oil outlet being located between the water pump and the drive chain.

[0011] According to some embodiments of the present invention, the transmission chain is constructed in multiple ways, and the tensioning guide rail and the tensioner are respectively constructed in multiple ways corresponding to the transmission chain.

[0012] According to some embodiments of the present invention, the plurality of transmission chains include a first transmission chain and a second transmission chain, wherein the first transmission chain surrounds at least a portion of the outer periphery of the water pump, and the second transmission chain surrounds at least another portion of the outer periphery of the water pump.

[0013] According to some embodiments of the present invention, the first transmission chain is correspondingly provided with a first tensioning guide rail and a first tensioner that cooperate with each other, the first tensioning guide rail being disposed on the side of the first tensioner near the first transmission chain; the second transmission chain is correspondingly provided with a second tensioning guide rail and a second tensioner that cooperate with each other, the second tensioning guide rail being disposed on the side of the second tensioner near the second transmission chain; the engine assembly further includes: a first sprocket and a second sprocket, the first transmission chain being sleeved on the first sprocket and the second sprocket; a timing sprocket, the second transmission chain being sleeved on the first sprocket and the timing sprocket; wherein the first tensioner is disposed adjacent to the first tensioning guide rail and near the first sprocket, and the second tensioner is disposed adjacent to the second tensioning guide rail and near the first sprocket.

[0014] According to some embodiments of the present invention, the oil outlet is located between the first tensioner and the second tensioner.

[0015] According to some embodiments of the present invention, the branch oil passage includes: a first branch oil passage extending in a first direction and having a first oil outlet communicating with the first tensioner; a second branch oil passage extending in a second direction and having a second oil outlet communicating with the second tensioner; wherein the second branch oil passage and the first branch oil passage are connected at their intersection, and the branch oil passage has a third oil outlet communicating with the oil passage outlet at the intersection of the second branch oil passage and the first branch oil passage.

[0016] According to some embodiments of the present invention, a mounting portion is formed on the mounting surface, the tensioner is connected to the mounting portion, and an oil storage cavity communicating with the branch oil passage is formed between the tensioner and the mounting portion.

[0017] According to some embodiments of the present invention, the mounting part has a first groove and an oil outlet located on the bottom wall of the first groove, the oil outlet being connected to the branch oil passage; the tensioner has a second groove and an oil inlet located on the bottom wall of the second groove, the second groove being disposed opposite to the first groove to enclose and form the oil storage cavity, and the oil inlet being connected to the oil outlet.

[0018] The vehicle according to this utility model is briefly described below.

[0019] The vehicle according to this utility model includes the engine assembly described in any of the above embodiments. Since the vehicle according to this utility model includes the engine assembly described in any of the above embodiments, by reducing the complexity of the oil passage layout and processing difficulty of the engine assembly, the vehicle according to this utility model helps to reduce the overall vehicle manufacturing cost and shorten the production cycle.

[0020] 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

[0021] 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 plan view of an engine assembly according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an engine assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the main oil passage and branch oil passage of an engine assembly according to an embodiment of the present invention; Figure 4This is a plan view of a tensioner for an engine assembly according to an embodiment of the present invention; Figure 5 This is a plan view of the mounting portion of an engine assembly according to an embodiment of the present invention.

[0022] Figure label: 1. Engine components; 11. Cylinder block; 111. Mounting surface; 111a. Oil outlet; 112. Main oil passage; 113. Branch oil passage; 1131. First branch oil passage; 1132. First oil outlet; 1133. Second branch oil passage; 1134. Second oil outlet; 1135. Third oil outlet; 1136. Mounting part; 11361. First groove; 11362. Oil outlet hole; 121. First transmission chain; 122. Second transmission chain; 131. First tensioning of the guide rail; 132. Second tensioning of the guide rail; 14. Tensioner; 141. First tensioner; 142. Second tensioner; 143. Second groove; 144. Oil inlet; 15. Water pump; 161. First sprocket; 162. Second sprocket; 163. Timing sprocket; 17. Oil storage chamber. Detailed Implementation

[0023] 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.

[0024] 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," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not 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. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In related technologies, when constructing a timing drive system, the normal operation of the timing drive system involves the coordinated work of multiple components. The engine block needs to take into account the installation layout of components such as the drive chain, movable tension guide, tensioner, and lubrication nozzles. The installation of each component is interconnected and affects each other.

[0026] Due to the factors mentioned above, the hydraulic circuit design becomes extremely complex. The hydraulic circuit needs to provide the necessary lubricating and cooling fluid for components such as the tensioner and lubrication nozzles. To meet the lubrication requirements of different components, multiple independent and complex hydraulic circuits are often required. This complex hydraulic circuit design makes the engine block manufacturing process extremely cumbersome, increasing production costs and time.

[0027] Therefore, the key to reducing the difficulty of engine block manufacturing, controlling production costs, and shortening the production cycle lies in how to rationally arrange the various components to meet the requirements of efficient and coordinated operation of the timing transmission system while effectively simplifying the oil circuit design.

[0028] The following is for reference. Figures 1-5 The engine assembly 1 according to an embodiment of the present invention is described.

[0029] like Figures 1-3 As shown, according to the present invention, the engine assembly 1 includes a cylinder block 11, a drive chain, a tension guide rail, and a tensioner 14. One end face of the cylinder block 11 is constructed as a mounting surface 111, providing a basis for the installation and positioning of other components, so that the drive chain, tension guide rail, and tensioner 14 can be installed together in an orderly and accurate manner to form a complete timing transmission system.

[0030] A drive chain is mounted on mounting surface 111 and is responsible for power transmission. A tensioning guide is movably mounted on mounting surface 111 and is used to contact the drive chain. The tensioning guide can adjust the tension of the drive chain by its own movement. The tensioning guide can move according to actual conditions to ensure the transmission accuracy and stability of the timing system.

[0031] Tensioner 14 is disposed on mounting surface 111 and connected to tension guide rail for driving the tension guide rail to move. Tensioner 14 can generate corresponding driving force according to the engine's operating status and chain tension, pushing the tension guide rail to move, thereby achieving precise adjustment of the transmission chain tension.

[0032] The cylinder block 11 has a branch oil passage 113 connected to the main oil passage 112. The branch oil passage 113 is connected to the tensioner 14 and has an oil outlet 111a on the mounting surface 111, which faces the drive chain. The main oil passage 112 is responsible for delivering oil to various parts of the engine that require lubrication and cooling. The branch oil passage 113 branches off from the main oil passage 112 and specifically provides oil to the tensioner 14 and the oil outlet 111a, meeting the oil requirements of the tensioner 14 and the oil outlet 111a during operation.

[0033] On one hand, pressurized oil enters the tensioner 14 through branch oil passage 113, providing power support to the hydraulic system inside the tensioner 14. This allows the hydraulic tensioner 14 to adjust the tension of the drive chain in real time according to changes in engine speed, load, and other operating conditions, ensuring that the drive chain is always in the optimal tension state and improving the transmission accuracy and stability of the engine timing system. On the other hand, the oil sprayed from oil passage outlet 111a can be directly sprayed onto the drive chain, providing good lubrication and improving the overall reliability of the timing system.

[0034] By setting a branch oil passage 113 inside the cylinder block 11 that is connected to the main oil passage 112, the branch oil passage 113 is connected to the tensioner 14 on one hand, and forms an oil passage outlet 111a on the mounting surface 111 on the other hand. This eliminates the need to introduce separate oil passages for the tensioner 14 and the oil passage outlet 111a, effectively reducing the complexity of the oil passage layout and the difficulty of oil passage processing, thereby reducing manufacturing costs and production cycle.

[0035] Therefore, according to the engine assembly 1 of this utility model, oil is supplied to the tensioner 14 and the oil outlet 111a through the branch oil passage 113, which reduces the complexity of the oil passage layout and the processing difficulty, and reduces the manufacturing cost and production cycle.

[0036] According to some embodiments of this utility model, such as Figure 1 As shown, engine assembly 1 also includes a water pump 15, which is disposed on mounting surface 111. By placing the water pump 15 on mounting surface 111 of cylinder block 11 and arranging it together with components such as drive chain, tensioner 14, and oil outlet 111a on mounting surface 111, the limited space at the end of cylinder block 11 is fully utilized, the overall space occupied is reduced, and the structure of engine assembly 1 is made more compact.

[0037] The water pump 15 is located on one side of the drive chain, and the tensioner 14 and the oil outlet 111a are located between the water pump 15 and the drive chain, maintaining an appropriate distance between each component. This ensures that each component has enough space to operate normally, such as the operation of the water pump 15, the transmission of the drive chain, and the adjustment of the tensioner 14, while avoiding space waste caused by excessive spacing, thus further improving space utilization.

[0038] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the transmission chain is constructed in multiple ways, and the tensioning guide rail and tensioner 14 are each constructed in multiple ways corresponding to one of the transmission chains. By setting multiple transmission chains, each transmission chain can undertake different power transmission tasks, enabling more flexible power distribution and meeting the working needs of different engine components.

[0039] By equipping each drive chain with a separate tensioning guide and tensioner 14, the tension of each drive chain can be precisely adjusted according to its specific working conditions, ensuring that each drive chain can work under optimal tension.

[0040] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the multiple drive chains include a first drive chain 121 and a second drive chain 122. The first drive chain 121 surrounds at least a portion of the outer periphery of the water pump 15, and the second drive chain 122 surrounds at least another portion of the outer periphery of the water pump 15. The fact that the first drive chain 121 surrounds at least a portion of the outer periphery of the water pump 15 means that the extent of the first drive chain 121 surrounding the water pump 15 is not fixed; it can surround a small section, a larger section, or even more than half of the outer periphery, but it does not completely surround the entire outer periphery of the water pump 15. The fact that the second drive chain 122 surrounds at least another portion of the outer periphery of the water pump 15 means that the second drive chain 122 surrounds a different area of ​​the outer periphery of the water pump 15 than the first drive chain 121. The portions surrounded by the second drive chain 122 and the first drive chain 121 are clearly distinguishable, and together they constitute the surrounding layout of the water pump 15, but the size of each surrounding area is uncertain, and there may be some overlap between the portions of the first drive chain 121 and the second drive chain 122 surrounding the water pump 15.

[0041] By arranging the first transmission chain 121 and the second transmission chain 122 around the outer periphery of the water pump 15, the space around the water pump 15 can be fully utilized, making the engine structure more compact, improving space utilization, and providing more space for the installation and layout of other components.

[0042] According to some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the first transmission chain 121 is provided with a first tensioning guide rail 131 and a first tensioner 141 that cooperate with each other. The first tensioning guide rail 131 is located on the side of the first tensioner 141 close to the first transmission chain 121, which can ensure that the tension force acts directly and effectively on the first transmission chain 121, and also helps to reduce the size of the entire tensioning system, making the engine structure more compact.

[0043] The second transmission chain 122 is provided with a second tensioning guide rail 132 and a second tensioner 142 that cooperate with each other. The second tensioning guide rail 132 is located on the side of the second tensioner 142 close to the second transmission chain 122, which can ensure that the tension force acts directly and effectively on the second transmission chain 122, and also helps to reduce the size of the entire tensioning system, making the engine structure more compact.

[0044] Engine assembly 1 also includes a first sprocket 161, a second sprocket 162, and a timing sprocket 163. A first drive chain 121 is fitted onto the first sprocket 161 and the second sprocket 162, realizing the power connection between the first sprocket 161 and the second sprocket 162. A second drive chain 122 is fitted onto the first sprocket 161 and the timing sprocket 163, realizing the power connection between the first sprocket 161 and the timing sprocket 163.

[0045] The engine's power source drives the second sprocket 162 to rotate. The second sprocket 162 transmits power to the first sprocket 161 through the first transmission chain 121, driving the related components connected to the first sprocket 161 (such as the high-pressure oil pump) to operate; at the same time, the first sprocket 161 also transmits power to the timing sprocket 163 through the second transmission chain 122, and the timing sprocket 163 further drives the engine's valve train to control the engine's intake and exhaust processes.

[0046] The first tensioner 141 is located adjacent to the first tensioning guide rail 131 and close to the first sprocket 161, and the second tensioner 142 is located adjacent to the second tensioning guide rail 132 and close to the first sprocket 161. This arrangement of the first tensioner 141 and the second tensioner 142 between the water pump 15 and the drive chain achieves a compact structural layout and facilitates the arrangement of the oil circuit, reducing the complexity of the oil circuit and the difficulty of processing.

[0047] According to some embodiments of this utility model, the oil outlet 111a is located between the first tensioner 141 and the second tensioner 142, enabling centralized oil supply to the first tensioner 141, the second tensioner 142, and the oil outlet 111a, optimizing the oil circuit layout, reducing oil circuit branches and pipe lengths, and improving lubrication efficiency. Simultaneously, by placing the oil outlet 111a in the compact space between the first tensioner 141 and the second tensioner 142, the overall structure of the engine assembly 1 is simpler and more compact, and it also facilitates simultaneous oil injection from the oil outlet 111a to the first transmission chain 121 and the second transmission chain 122, improving oil utilization and lubrication efficiency.

[0048] According to some embodiments of this utility model, such as Figure 3 As shown, the branch oil passage 113 includes a first branch oil passage 1131 and a second branch oil passage 1133. The first branch oil passage 1131 extends in a first direction (such as the horizontal direction) and is provided with a first oil outlet 1132 communicating with the first tensioner 141. Through the first oil outlet 1132, it communicates with the first tensioner 141 to provide oil to the first tensioner 141 to drive the first tensioning guide rail 131 and adjust the tension of the first transmission chain 121.

[0049] The second oil passage 1133 extends in a second direction (different from the first direction, such as the vertical direction) and is provided with a second oil outlet 1134 that communicates with the second tensioner 142. The second oil outlet 1134 communicates with the second tensioner 142 to provide oil to the second tensioner 142 to drive the second tensioning guide rail 132 and adjust the tension of the second transmission chain 122.

[0050] The second oil passage 1133 connects to the first oil passage 1131 at their intersection, thus merging at the intersection to form a shared oil circuit node. The branch oil passage 113 has a third oil outlet 1135 at the intersection of the second oil passage 1133 and the first oil passage 1131, which connects to the oil circuit outlet 111a. Through the third oil outlet 1135, oil is supplied to the oil circuit outlet 111a to lubricate the first and second tensioning chains.

[0051] Therefore, the oil diverted from the main oil passage 112 into the branch oil passage 113 can flow through the first outlet 1132 of the first branch oil passage 1131 to the first tensioner 141, which drives the first tensioning guide 131 to adjust the tension of the first transmission chain 121; another part can flow through the second outlet 1134 of the second branch oil passage 1133 to the second tensioner 142, which drives the second tensioning guide 132 to adjust the tension of the second transmission chain 122; at the same time, a portion of the oil can flow through the third outlet 1135 at the junction to the oil passage outlet 111a, which is directly sprayed onto the first transmission chain 121 and the second transmission chain 122 to provide lubrication for the first transmission chain 121 and the second transmission chain 122. This achieves centralized oil supply to multiple components, optimizes the overall layout of the oil passage, reduces unnecessary oil passage branches and pipe lengths, reduces the complexity and processing difficulty of the oil passage layout, improves lubrication efficiency, and also contributes to the compact design of the overall structure of the engine assembly 1.

[0052] like Figure 3 As shown, Figure 3 This is a schematic diagram of the main oil circuit 112 and the branch oil circuit 113. Figure 3 It is a schematic diagram that presents the original virtual oil circuit in a physical form, so as to more intuitively and comprehensively show the spatial layout of the main oil circuit 112 and the branch oil circuit 113.

[0053] According to some embodiments of the present invention, a mounting portion 1136 is formed on the mounting surface 111, and a tensioner 14 is connected to the mounting portion 1136. The mounting portion 1136 provides a fixed mounting position for the tensioner 14. By connecting to the mounting portion 1136, the tensioner 14 achieves a stable assembly on the engine assembly 1, which helps the tensioner 14 to stably adjust the tension of the drive chain.

[0054] An oil reservoir 17, communicating with the branch oil passage 113, is formed between the tensioner 14 and the mounting part 1136. After the tensioner 14 and the mounting part 1136 are connected, a relatively independent space, namely the oil reservoir 17, is formed between the tensioner 14 and the mounting part 1136. The oil reservoir 17 is connected to the branch oil passage 113, so during the process of oil being transported from the branch oil passage 113 to the tensioner 14, the oil reservoir 17 can obtain oil from the branch oil passage 113.

[0055] When the engine is stopped, the oil reservoir 17 can store a certain amount of oil. When the engine starts again, because the oil pump needs some time to respond, there will be a delay in the oil reaching the tensioner 14 from the main oil line 112 via the branch oil line 113. At this time, the oil stored in the reservoir 17 can immediately provide the necessary oil pressure to the tensioner 14, increasing its response speed. This effectively avoids the tensioner 14 failing to function fully due to insufficient oil pressure at startup, thus preventing risks such as abnormal noise and gear skipping, and ensuring the stable operation of the engine timing system.

[0056] According to some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the mounting portion 1136 has a first groove 11361 and an oil outlet 11362 located on the bottom wall of the first groove 11361. The oil outlet 11362 communicates with the branch oil passage 113. The first groove 11361 provides a spatial basis for subsequent cooperation with the tensioner 14 to form an oil storage chamber 17. The first groove 11361 has a certain depth and volume, which can hold a certain amount of oil. The oil outlet 11362 allows the oil in the branch oil passage 113 to smoothly enter the space where the first groove 11361 is located, providing an oil source for the oil storage chamber 17.

[0057] The tensioner 14 has a second groove 143 and an oil inlet 144 located on the bottom wall of the second groove 143. The second groove 143 is arranged opposite to the first groove 11361 to form an oil storage cavity 17, and the oil inlet 144 communicates with the oil outlet 11362. The second groove 143 also has a certain depth and volume, which can hold a certain amount of oil. The oil in the second groove 143 can flow into the tensioner 14 through the oil inlet 144 to provide the required oil pressure for the tensioner 14.

[0058] When the tensioner 14 is connected to the mounting part 1136, the second groove 143 and the first groove 11361 are arranged opposite to each other, forming a relatively independent closed space, namely the oil storage chamber 17. The oil storage chamber 17 is connected to the branch oil passage 113 through the oil outlet 11362 of the mounting part 1136, and can obtain oil from the branch oil passage 113; on the other hand, the oil inlet 144 of the tensioner 14 is connected to the oil outlet 11362, so that the oil flows smoothly between the tensioner 14 and the branch oil passage 113 through the oil storage chamber 17.

[0059] According to some embodiments of this utility model, the edge of the first groove 11361 is connected to the edge of the second groove 143. When the tensioner 14 is installed on the mounting part 1136, the edge of the first groove 11361 and the edge of the second groove 143 contact and connect with each other, and the two fit tightly together to form an oil reservoir 17, ensuring the sealing of the oil reservoir 17, ensuring that the oil can be stably stored in the oil reservoir 17, providing timely oil pressure support for the tensioner 14 under operating conditions such as engine start-up, and ensuring the normal operation of the engine timing system.

[0060] According to some embodiments of the present invention, the engine assembly 1 also includes a seal, which is disposed between the mounting part 1136 and the tensioner 14. The seal can effectively prevent oil leakage between the mounting part 1136 and the tensioner 14, enhance the sealing performance of the oil reservoir 17, and ensure that the oil reservoir 17 can store a sufficient amount of oil when the engine is stopped, so as to provide timely and sufficient oil pressure support for the tensioner 14 when the engine is started again.

[0061] The seal is annular, surrounding the edges of the first groove 11361 and the second groove 143. This allows for a perfect fit with the edges of both grooves, preventing oil leakage from the groove edges and improving the sealing performance of the oil reservoir 17. Because the seal improves the sealing performance of the oil reservoir 17, it reduces the possibility of oil leakage, thus lowering the engine failure rate caused by oil leakage. Therefore, the engine maintenance cycle can be appropriately extended, and the maintenance workload reduced, thereby lowering vehicle maintenance and operating costs. According to some embodiments of the present invention, the sealing element is constructed in multiple ways, including a first sealing element and a second sealing element. The first sealing element is disposed on the mounting part 1136, and the second sealing element is disposed on the tensioner 14 and connected to the first sealing element, so that the first sealing element and the second sealing element can cooperate with each other to seal the oil storage cavity 17, thereby enhancing the sealing reliability of the oil storage cavity 17.

[0062] According to some embodiments of this utility model, the first seal and the second seal are radially connected. Therefore, for the first seal and the second seal, one seal (let's say the first seal) is located radially inside the other seal (let's say the second seal). When the first seal located radially inside functions, it can first block oil from inside the oil reservoir 17, while the second seal located radially outside can further block a small amount of oil that may break through the first seal, thus achieving multiple seals.

[0063] Even if the sealing performance of one of the seals decreases, the other seal can still play an effective sealing role, which improves the sealing reliability of the oil reservoir 17, ensures that the tensioner 14 can obtain a stable oil pressure supply, thereby adjusting the tension of the transmission chain and ensuring the stable operation of the engine timing system.

[0064] The vehicle according to this utility model is briefly described below.

[0065] The vehicle according to this utility model includes the engine assembly 1 in any of the above embodiments. Since the vehicle according to this utility model includes the engine assembly 1 in any of the above embodiments, the vehicle according to this utility model helps to reduce the overall vehicle manufacturing cost and shorten the production cycle by reducing the complexity of the oil circuit layout and processing difficulty of the engine assembly 1.

[0066] 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.

[0067] 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: The cylinder body (11) has one end face structured as a mounting surface (111). A drive chain is disposed on the mounting surface (111). The tensioning guide rail is movably disposed on the mounting surface (111) and is used to contact the transmission chain; Tensioner (14), the tensioner (14) is disposed on the mounting surface (111) and connected to the tensioning guide rail for driving the tensioning guide rail to move; wherein The cylinder body (11) has a branch oil passage (113) that is connected to the main oil passage (112). The branch oil passage (113) is connected to the tensioner (14) and forms an oil passage outlet (111a) on the mounting surface (111). The oil passage outlet (111a) faces the drive chain.

2. The engine assembly according to claim 1, characterized in that, Also includes: A water pump (15) is disposed on the mounting surface (111) and located on one side of the transmission chain. The tensioner (14) and the oil outlet (111a) are located between the water pump (15) and the transmission chain.

3. The engine assembly according to claim 2, characterized in that, The transmission chain is constructed in multiple ways, and the tensioning guide rail and the tensioner (14) are each constructed in multiple ways corresponding to the transmission chain.

4. The engine assembly according to claim 3, characterized in that, The plurality of drive chains include a first drive chain (121) and a second drive chain (122), the first drive chain (121) surrounding at least a portion of the outer periphery of the water pump (15), and the second drive chain (122) surrounding at least another portion of the outer periphery of the water pump (15).

5. The engine assembly according to claim 4, characterized in that, The first transmission chain (121) is provided with a first tensioning guide rail (131) and a first tensioner (141) that cooperate with each other. The first tensioning guide rail (131) is located on the side of the first tensioner (141) close to the first transmission chain (121). The second transmission chain (122) is provided with a second tensioning guide rail (132) and a second tensioner (142) that cooperate with each other. The second tensioning guide rail (132) is located on the side of the second tensioner (142) close to the second transmission chain (122). The engine assembly also includes: The first sprocket (161) and the second sprocket (162) are provided with the first transmission chain (121) sleeved on the first sprocket (161) and the second sprocket (162). A timing sprocket (163) is provided, and the second drive chain (122) is fitted onto the first sprocket (161) and the timing sprocket (163); wherein The first tensioner (141) is located near the first tensioning guide (131) and close to the first sprocket (161), and the second tensioner (142) is located near the second tensioning guide (132) and close to the first sprocket (161).

6. The engine assembly according to claim 5, characterized in that, The oil outlet (111a) is located between the first tensioner (141) and the second tensioner (142).

7. The engine assembly according to claim 6, characterized in that, The branch oil passage (113) includes: The first branch oil passage (1131) extends in a first direction and is provided with a first oil outlet (1132) communicating with the first tensioner (141). The second oil passage (1133) extends in the second direction and is provided with a second oil outlet (1134) communicating with the second tensioner (142). The second branch oil passage (1133) is connected to the first branch oil passage (1131) at the intersection, and the branch oil passage (113) is provided with a third oil outlet (1135) at the intersection of the second branch oil passage (1133) and the first branch oil passage (1131) that is connected to the oil passage outlet (111a).

8. The engine assembly according to claim 1, characterized in that, An installation portion (1136) is formed on the mounting surface (111), the tensioner (14) is connected to the installation portion (1136), and an oil storage chamber (17) communicating with the branch oil passage (113) is formed between the tensioner (14) and the installation portion (1136).

9. The engine assembly according to claim 8, characterized in that, The mounting part (1136) has a first groove (11361) and an oil outlet (11362) located on the bottom wall of the first groove (11361), and the oil outlet (11362) is connected to the branch oil passage (113). The tensioner (14) has a second groove (143) and an oil inlet (144) located on the bottom wall of the second groove (143). The second groove (143) is arranged opposite to the first groove (11361) to enclose and form the oil storage cavity (17), and the oil inlet (144) is connected to the oil outlet (11362).

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

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