Engine structure and vehicle
By setting a separate oil return channel on the oil pan body, the problem of oil and gas entering the exhaust pipe during engine operation is solved, achieving the effect of reducing the oil content in exhaust gas and improving engine emission performance.
Patent Information
- Application Number
- CN202520356911.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-03-03
AI Technical Summary
When oil and gas produced during engine operation enter the exhaust pipe, the exhaust gas contains a high concentration of oil, which increases the difficulty of exhaust gas treatment and may affect the normal operation and service life of the engine.
A separate oil return channel is set on the oil pan body to prevent the oil from passing through the cavity of the crankshaft and connecting rod mechanism, thereby avoiding the generation of a large amount of oil gas due to the agitation of the oil by the crankshaft and connecting rod mechanism and reducing the oil content in the exhaust gas.
By setting a separate oil return channel on the oil pan body, the oil content in the exhaust gas in the engine exhaust pipe is effectively reduced, improving the engine's emission performance and NVH performance, and making it more adaptable.
Smart Images
Figure CN223647928U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine structure technology, and more specifically, to an engine structure and a vehicle. Background Technology
[0002] With the continuous development of the automotive industry, the engine, as a crucial component of a vehicle, directly affects the overall vehicle's efficiency and environmental performance. During engine operation, engine oil flows within the cavities of the crankshaft and connecting rod mechanism. As the crankshaft and connecting rod mechanism moves, they come into contact with and agitate the oil, generating a large amount of oil vapor. This oil vapor circulates with the oil throughout the engine, and some eventually enters the exhaust pipe, resulting in a high concentration of oil in the exhaust gas. This high concentration of oil not only increases the difficulty of exhaust emission treatment but may also affect the normal operation and lifespan of the engine.
[0003] Therefore, controlling the amount of oil and gas produced during engine operation and reducing the oil content in exhaust gas has become an important issue for improving engine performance and protecting the environment. Utility Model Content
[0004] This invention provides an engine structure and vehicle that can reduce the oil content in exhaust gas generated during operation, thereby facilitating engine emission control.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] An embodiment of this utility model provides an engine structure, which includes:
[0007] Cylinder block;
[0008] An oil pump is used to pump lubricating oil into the cylinder block;
[0009] The oil pan body has an oil inlet channel and an oil return channel. The oil inlet channel is connected to both the cylinder block and the oil pump, and the oil return channel is connected to the oil return pipeline of the cylinder block.
[0010] An oil baffle is integrated into the oil pan body.
[0011] Optionally, the cylinder block is located on the upper side of the oil pan body, the oil pump is located on the lower side of the oil pan body, the outlet of the oil inlet channel and the inlet of the oil return channel are both located on the upper side of the oil pan body, the inlet of the oil inlet channel is located on the lower side of the oil pan body, and the outlet of the oil return channel is connected to the oil pan body.
[0012] Optionally, the outlet of the oil inlet channel and the inlet of the oil return channel are located on two opposite edges of the oil pan body.
[0013] Optionally, the oil baffle is provided with an oil return hole, which is connected to the oil pan body.
[0014] Optionally, the engine structure further includes a crank structure, which is disposed on the upper side of the oil pan body and is connected to the oil pump via a silent chain.
[0015] Optionally, an avoidance groove is provided on one side of the oil baffle, the avoidance groove being arranged along the width direction of the oil baffle, and the avoidance groove being used to avoid the movement of the crank structure.
[0016] Optionally, the engine structure further includes a mesh reinforcing rib, which is disposed on the side of the oil baffle away from the clearance groove.
[0017] Optionally, the oil pan body is provided with a glue reservoir at its edge, the glue reservoir being used to hold sealant.
[0018] Optionally, the oil baffle and the oil pan body are integrally formed.
[0019] An embodiment of this utility model also provides a vehicle, including a vehicle body and an engine structure, wherein the engine structure is mounted on the vehicle body.
[0020] The beneficial effects of an engine structure and vehicle according to an embodiment of this utility model include, for example:
[0021] The engine structure includes a cylinder block, an oil pump, an oil pan body, and an oil baffle. It pumps lubricating oil into the cylinder block. The oil pan body has an inlet channel and a return channel. The inlet channel connects to both the cylinder block and the oil pump, while the return channel connects to the cylinder block's return oil line. The oil baffle is integrated into the oil pan body. In operation, the engine's lubricating oil is pressurized by the oil pump and enters the oil pan body through the inlet channel. After passing through the oil inlet channel of the oil pan body, it enters the cylinder block and then the engine's lubricating oil passages. Finally, it returns directly to the oil pan through the cylinder block's return oil line and the oil pan body's return channel. This engine structure features a separate return channel on the oil pan body, preventing oil from passing through the crankshaft and connecting rod mechanism's cavity. This avoids the generation of large amounts of oil vapor due to the crankshaft and connecting rod mechanism's agitation, reducing the oil content in the engine's exhaust gas and facilitating emission control.
[0022] The vehicle includes a body and an engine structure, with the engine structure mounted on the body. During operation, the engine's lubricating oil is pressurized by the oil pump and enters the oil pan body through the inlet channel. From there, it enters the cylinder block and then the engine's lubrication passages. Finally, it returns to the oil pan body through the cylinder block's return line and then directly back into the oil pan. This engine structure features a separate return channel on the oil pan body to prevent oil from passing through the crankshaft and connecting rod mechanism's cavity. This avoids the generation of excessive oil vapor due to the crankshaft and connecting rod mechanism's agitation, reducing the oil content in the engine's exhaust gas and facilitating emission control. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a first-view structural schematic diagram of the oil pan body and oil baffle provided in this embodiment.
[0025] Figure 2 This is a structural schematic diagram of the oil pan body and oil baffle provided in this embodiment from a second perspective.
[0026] Figure 3 This is a third-view structural diagram of the oil pan body and oil baffle provided in this embodiment.
[0027] Icons: 10-Oil pan body; 11-Oil inlet channel; 110-Oil inlet channel entrance; 111-Oil inlet channel exit; 12-Oil return channel; 121-Oil return channel entrance; 20-Oil baffle; 30-Oil return hole; 40-Allowing groove; 50-Mesh reinforcing rib; 60-Glue reservoir; 70-Mounting hole. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0031] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they 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.
[0032] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0033] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0034] With the continuous development of the automotive industry, the engine, as a crucial component of a vehicle, directly affects the overall vehicle's efficiency and environmental performance. During engine operation, engine oil flows within the cavities of the crankshaft and connecting rod mechanism. As the crankshaft and connecting rod mechanism moves, they come into contact with and agitate the oil, generating a large amount of oil vapor. This oil vapor circulates with the oil throughout the engine, and some eventually enters the exhaust pipe, resulting in a high concentration of oil in the exhaust gas. This high concentration of oil not only increases the difficulty of exhaust emission treatment but may also affect the normal operation and lifespan of the engine.
[0035] Therefore, controlling the amount of oil and gas produced during engine operation and reducing the oil content in exhaust gas has become an important issue for improving engine performance and protecting the environment.
[0036] Please refer to Figures 1-3 This embodiment provides a vehicle including a vehicle body and an engine structure, the engine structure being mounted on the vehicle body for providing power to the vehicle body. This vehicle can effectively improve the aforementioned technical problems, reducing the oil content in exhaust gases generated during operation, thereby facilitating engine emission control.
[0037] In this embodiment, the carrier is a vehicle, specifically a four-wheeled car. Of course, the carrier is not limited to vehicles; for example, it could also be a boat, a motorcycle, etc. No specific limitation is made here.
[0038] This embodiment provides an engine structure including a cylinder block, an oil pump, an oil pan body 10, and an oil baffle 20, for pumping lubricating oil into the cylinder block. The oil pan body 10 is provided with an oil inlet channel 11 and an oil return channel 12. The oil inlet channel 11 is connected to both the cylinder block and the oil pump, and the oil return channel 12 is connected to the oil return pipeline of the cylinder block. The oil baffle 20 is integrated into the oil pan body 10.
[0039] Specifically, the oil baffle 20 is positioned between the cylinder block and the oil pan body 10 to prevent the oil in the oil pan from oscillating when the vehicle is bumpy, thereby preventing the risk of the oil pump sucking in air.
[0040] It should be noted that in the prior art, the oil baffle 20 is generally made of thin steel sheet by stamping and then fixed to the oil pan body 10 by bolts. The rigidity of the stamped thin steel sheet is poor, resulting in poor NVH performance of the engine. In this embodiment, the oil baffle 20 and the oil pan body 10 are integrally formed, specifically by die casting. This improves the manufacturability and rigidity, thereby improving the NVH performance of the engine.
[0041] Specifically, in existing engine structures, the engine oil needs to flow through the cavity of the crankshaft and connecting rod mechanism during use. Because the crankshaft and connecting rod mechanism rotates continuously at high speed during use, it agitates the oil, increasing the gas content in the oil. This results in a higher oil content in the exhaust gas discharged from the engine's exhaust pipe, which is detrimental to gas emissions. To solve this technical problem, the engine structure provided in this embodiment has a separate oil return channel 12 on the oil pan body 10. The oil flowing from the cylinder block's oil return line can directly enter the oil pan through the oil return channel 12, effectively preventing the generation of a large amount of oil vapor due to the agitation of the oil by the crankshaft and connecting rod mechanism. This reduces the oil content in the exhaust gas from the engine's exhaust pipe and helps control engine emissions.
[0042] Furthermore, in existing engine structures, the oil pump is generally located at the front end of the crankshaft, and the oil pump is driven by the cooperation between the crankshaft's flat plate and the internal rotor of the oil pump. Although this structure is relatively simple, the oil pump connected in series on the crankshaft increases the engine length, posing a certain challenge to the overall engine layout in the vehicle. Simultaneously, the presence of a certain clearance between the internal rotor of the oil pump and the crankshaft flat plate results in poor NVH performance. In this embodiment, the cylinder block is located on the upper side of the oil pan body 10, and the oil pump is located on the lower side of the oil pan body 10. The oil pump is connected to the lower side of the oil pan body 10 by bolts, reducing the axial space required for the oil pump and shortening the engine's axial dimension by 15mm. This allows the engine structure to be applied to smaller vehicles, making it more adaptable.
[0043] In this embodiment, the outlet 111 of the oil inlet channel and the inlet 121 of the oil return channel are both located on the upper side of the oil pan body 10, the inlet 110 of the oil inlet channel is located on the lower side of the oil pan body 10, and the outlet of the oil return channel 12 is connected to the oil pan body 10. The outlet 111 of the oil inlet channel and the inlet 121 of the oil return channel are respectively located on two opposite edges of the oil pan body 10.
[0044] During operation, the lubricating oil is pressurized by the oil pump and enters the oil pan body 10 from the inlet 110 of the oil inlet channel. After entering the cylinder block through the outlet 111 of the oil inlet channel, it enters the lubricating oil passage of the engine. Finally, it enters the oil return passage 12 of the oil pan body 10 through the oil return line of the cylinder block and enters the oil pan body 10 through the inlet 121 of the oil return passage.
[0045] Furthermore, the oil baffle 20 is provided with an oil return hole 30, which is connected to the oil pan body 10. The oil return hole 30 is also connected to the oil return channel 12, allowing engine oil to enter the oil pan body 10 through the oil return hole 30. In this embodiment, there are multiple oil return holes 30, and each oil return hole 30 has an elongated structure.
[0046] In this embodiment, there are nine oil return holes 30. In other embodiments, the number of oil return holes 30 may be increased or decreased, and no specific limitation is made here.
[0047] Understandably, the engine structure also includes a crankshaft structure, which is located on the upper side of the oil pan body 10 and connected to the oil pump via a silent chain. The connection between the crankshaft structure and the oil pump via the silent chain avoids noise generated by the clearance between the rotor inside the oil pump and the crankshaft flat plate, further improving the engine's NVH performance.
[0048] During engine operation, the crank structure needs to rotate at high speed. In order to avoid affecting the movement of the crank structure, in this embodiment, an avoidance groove 40 is provided on one side of the oil baffle 20. The avoidance groove 40 is arranged along the width direction of the oil baffle 20 and is used to avoid the movement of the crank structure.
[0049] Specifically, the clearance groove 40 is disposed on the upper side of the oil baffle 20. The shape of the clearance groove 40 is adapted to the shape of the crank, allowing the crank to pass smoothly when rotating at high speed. In this embodiment, the clearance groove 40 is an arc-shaped groove structure.
[0050] In this embodiment, the number of clearance grooves 40 is adapted to the number of cranks. Specifically, there are four clearance grooves 40, which are arranged at intervals along the width direction of the oil baffle 20. In other embodiments, the number of clearance grooves 40 can be adjusted according to the actual situation of the crank structure, and is not specifically limited here.
[0051] To further increase the rigidity of the oil baffle 20, the engine structure also includes a mesh reinforcing rib 50, which is disposed on the side of the oil baffle 20 away from the clearance groove 40. The mesh reinforcing rib 50 covers the entire lower side of the oil baffle 20, thereby increasing its rigidity and further improving the engine's NVH performance.
[0052] Furthermore, the oil pan body 10 has multiple mounting holes 70 at its edge, which are spaced apart circumferentially. Fasteners are installed within the mounting holes 70. The oil pan body 10 and the cylinder block are connected via these fasteners, and the oil pan body 10 is also connected to the oil pump via the fasteners within the mounting holes 70. In this embodiment, the fasteners are bolts.
[0053] Furthermore, the oil pan body 10 has a sealant reservoir 60 at its edge, which is used to hold sealant. Specifically, there are four sealant reservoirs 60, which are respectively located on two opposite edges of the oil pan body 10. The sealant reservoirs 60 can retain more sealant, thereby improving the sealing performance of the connection points on the oil pan body 10.
[0054] In summary, this utility model embodiment provides an engine structure and vehicle. The engine structure includes a cylinder block, an oil pump, an oil pan body 10, and an oil baffle 20 for pumping lubricating oil into the cylinder block. The oil pan body 10 has an oil inlet channel 11 and an oil return channel 12. The oil inlet channel 11 is connected to both the cylinder block and the oil pump, and the oil return channel 12 is connected to the oil return line of the cylinder block. The oil baffle 20 is integrated into the oil pan body 10. In use, the engine's lubricating oil is pressurized by the oil pump and enters the oil pan body 10 through the oil inlet channel 11. After entering the cylinder block through the oil inlet channel 11, it enters the engine's lubricating oil passages and then enters the oil return channel 12 of the oil pan body 10 through the cylinder block's oil return line, returning directly to the oil pan through the oil return channel 12. The engine structure has a separate oil return channel 12 on the oil pan body 10 to prevent the oil from passing through the cavity of the crankshaft and connecting rod mechanism. This avoids the oil from generating a large amount of oil vapor due to the stirring of the crankshaft and connecting rod mechanism, reduces the oil content in the exhaust gas in the engine exhaust pipe, and helps control engine emissions.
[0055] The vehicle includes a body and an engine structure, with the engine structure mounted on the body. During operation, the engine's lubricating oil is pressurized by the oil pump and enters the oil pan body 10 through the oil inlet channel 11. After passing through the oil inlet channel 11, it enters the cylinder block and then the engine's lubrication passages. Finally, it returns to the oil pan through the cylinder block's return line and into the oil return channel 12 of the oil pan body 10, returning directly to the oil pan. This engine structure features a separate oil return channel 12 on the oil pan body 10 to prevent oil from passing through the crankshaft and connecting rod mechanism's cavity. This avoids the generation of excessive oil vapor due to the crankshaft and connecting rod mechanism's agitation, reducing the oil content in the engine's exhaust gas and facilitating emission control.
[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. An engine structure, characterized in that, include: Cylinder block; An oil pump is used to pump lubricating oil into the cylinder block; The oil pan body (10) is provided with an oil inlet channel (11) and an oil return channel (12). The oil inlet channel (11) is connected to the cylinder block and the oil pump, and the oil return channel (12) is connected to the oil return pipeline of the cylinder block. Oil baffle (20), which is integrated into the oil pan body (10).
2. The engine structure according to claim 1, characterized in that, The cylinder block is located on the upper side of the oil pan body (10), the oil pump is located on the lower side of the oil pan body (10), the outlet (111) of the oil inlet channel and the inlet (121) of the oil return channel are both located on the upper side of the oil pan body (10), the inlet (110) of the oil inlet channel is located on the lower side of the oil pan body (10), and the outlet of the oil return channel (12) is connected to the oil pan body (10).
3. The engine structure according to claim 2, characterized in that, The outlet (111) of the oil inlet channel and the inlet (121) of the oil return channel are located on two opposite edges of the oil pan body (10).
4. The engine structure according to claim 1, characterized in that, The oil baffle (20) is provided with an oil return hole (30), which is connected to the oil pan body (10).
5. The engine structure according to claim 1, characterized in that, The engine structure also includes a crank structure, which is located on the upper side of the oil pan body (10) and is connected to the oil pump via a silent chain.
6. The engine structure according to claim 5, characterized in that, The oil baffle (20) has a relief groove (40) on one side. The relief groove (40) is arranged along the width direction of the oil baffle (20) and is used to avoid the movement of the crank structure.
7. The engine structure according to claim 6, characterized in that, The engine structure also includes a mesh reinforcing rib (50), which is disposed on the side of the oil baffle (20) away from the clearance groove (40).
8. The engine structure according to claim 1, characterized in that, The oil pan body (10) is provided with a glue storage groove (60) at the edge position, which is used to hold sealant.
9. The engine structure according to claim 1, characterized in that, The oil baffle (20) and the oil pan body (10) are integrally formed.
10. A vehicle, characterized in that, It includes a vehicle body and an engine structure as described in any one of claims 1-9, wherein the engine structure is mounted on the vehicle body.