Oil injection structure, cylinder head cover and engine
By designing the oil-filling structure, the baffle and bracket are used to block external foreign matter, and the smooth flow and exhaust of engine oil are achieved through the flow guide and the air discharge hole, the problem of debris slipping into the engine in the prior art is solved, and the reliability and service life of the engine are improved.
Patent Information
- Application Number
- CN202421753126.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing oil filling port design causes external debris to slide into the engine easily, increasing maintenance difficulty and affecting engine reliability.
An oil injection structure is designed, including an oil injection cylinder, a bracket and a baffle. The oil injection port formed by the baffle and the bracket blocks the external foreign matter, and the smooth flow and exhaust of the engine oil are achieved through the flow guide and the air discharge hole.
Effectively prevent large foreign matter from sliding into the engine, simplifying the foreign matter removal process, reducing maintenance difficulty, and improving the engine's operating reliability and service life.
Smart Images
Figure CN222887048U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine oil filling, in particular to an oil filling structure, a cylinder head cover and an engine. Background Art
[0002] In the fields of automobiles and other internal combustion engines, the filling of engine oil is a part of routine maintenance work. As the connection point between the engine and the external environment, the design of the engine oil filling port is directly related to the maintenance convenience and operation reliability of the engine.
[0003] With the application of the integrated design concept of engines, existing engine oil filling ports are mostly integrated on components such as the cylinder head cover or the gear chamber of the engine to facilitate the filling of engine oil by users. In order to improve the filling speed, the filling port is usually designed with a relatively large diameter. When the engine oil filling port is opened, it is easy for sundries in the external environment, especially relatively large sundries such as small bolts, to slide into the engine interior. The removal process is troublesome and affects the reliability of the engine, which not only increases the maintenance difficulty but also affects the reliability of the engine. Summary of the Utility Model
[0004] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the utility model is to provide an oil filling structure that can effectively prevent large particles of foreign objects from sliding in, thereby improving the overall performance and reliability of the engine.
[0005] To achieve the above purpose, the embodiment of the utility model provides the following technical solutions:
[0006] An oil filling structure, comprising: an oil filling cylinder, a bracket and a baffle;
[0007] The middle of the oil filling cylinder has an oil filling cavity;
[0008] A plurality of brackets are provided. One end of the bracket is connected to the oil filling cylinder, and the other end of the bracket is connected to the baffle. An oil filling port is formed between adjacent two brackets, the side wall of the oil filling cylinder and the baffle;
[0009] A guiding part protrudes from the center of the baffle towards the side of the oil filling cavity. The guiding part is a thin-wall structure, and an exhaust cavity is formed inside. An air vent is provided at the protruding end of the guiding part. The air vent communicates the oil filling cavity and the exhaust cavity inside the guiding part. The height of the guiding part along the axial direction of the oil filling cylinder is greater than the length of the bracket along the axial direction of the oil filling cylinder.
[0010] Optionally, along the axial direction of the oil filling cylinder, the cross-section of the guiding part near the baffle is larger than the cross-section of the guiding part far from the baffle.
[0011] Optionally, the outer contour of the diversion part is a conical structure. The small end of the conical structure is located in the oil injection cavity, the air vent is opened at the small end of the conical structure, and the large end of the conical structure is connected to the baffle.
[0012] Optionally, the small end of the conical structure is an arc surface, and the connection between the large end of the conical structure and the baffle is transitioned by a fillet.
[0013] Optionally, the upper end of the bracket is connected to the side wall of the oil injection cylinder, and the lower end of the bracket is connected to the outer edge of the baffle.
[0014] Optionally, the brackets are evenly arranged in a circumferential array along the center of the baffle.
[0015] Optionally, the oil injection cylinder, the bracket, the baffle and the diversion part are integrally injection-molded.
[0016] Optionally, the oil injection structure is arranged on the cylinder head cover.
[0017] An embodiment of the present invention also provides a cylinder head cover, on which the above-mentioned oil injection structure is arranged, wherein the upper end of the oil injection cylinder is connected to the cylinder head cover.
[0018] An embodiment of the present invention also provides an engine, including the above-mentioned cylinder head cover.
[0019] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
[0020] 1. When refueling, the oil injection structure enters the oil injection port formed by the bracket, the baffle and the oil injection cylinder through the oil injection cavity of the oil injection cylinder and then enters the fuel tank. The baffle and the bracket block foreign objects that slide into the oil injection cylinder from the outside, reducing the risk of foreign objects entering the engine from the outside and preventing engine failures caused by foreign objects. By designing an easy-to-operate protection structure, the process of removing foreign objects is simplified, and the maintenance difficulty is reduced. The operation reliability of the engine is improved, and the service life of the engine is extended. Moreover, a diversion part is designed in the middle of the baffle for guiding and diverting, preventing splashing during the oil filling process. At the same time, an air vent is opened at the top of the diversion part for exhausting gas during the oil filling process. The height of the air vent is higher than the oil filling port, ensuring smooth oil inlet.
[0021] 2. The cross-section of the diversion part shows a gradually increasing trend in the axial direction, that is, the cross-section of the diversion part near the baffle (i.e., the lower end) is larger than the cross-section of the diversion part far from the baffle (i.e., the upper end), forming a gradually expanding structure. This design is beneficial to the guiding and diverting of the oil when it enters the oil injection cavity, improving the smoothness and efficiency of oil injection.
[0022] Advantages of additional aspects of the present utility model will be given in the following description, some of which will become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.
[0024] Figure 1 is a three-dimensional view of the oil filling structure provided by an embodiment of the present utility model;
[0025] Figure 2 is a cross-sectional view of the oil filling structure provided by an embodiment of the present utility model;
[0026] In the figures: 1, oil filling cylinder; 11, oil filling cavity; 2, bracket; 3, baffle; 4, diversion part; 41, air vent hole; 42, exhaust cavity;
[0027] The distances or dimensions between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0029] TERMINOLOGY EXPLANATION:
[0030] Engine oil: It is a key component in the engine lubrication system. It not only provides lubrication for various moving parts inside the engine to reduce wear, but also helps to cool the engine, clean the parts, and seal the combustion chamber, etc.
[0031] Engine oil filling port: It is a specially designed component on the engine for adding or filling engine oil. During the operation of the engine, engine oil will be consumed, so it needs to be replenished regularly. The engine oil filling port is usually located at the upper part of the engine, which may be part of the cylinder head cover or at other accessible positions. The size and shape of the engine oil filling port are usually designed to be large enough for quick filling of engine oil.
[0032] Cylinder head cover: It is a part of the engine cylinder head. It is usually a cover or hood that covers the top of the engine cylinder head. Its main function is to protect the upper components of the engine, such as valves, valve springs, rocker arms, etc., and prevent dust and other impurities from entering the engine interior. The cylinder head cover is usually made of materials such as aluminum alloy or plastic. It not only plays a role in dust prevention and splash prevention, but also can reduce engine noise. In addition, the cylinder head cover helps to seal the upper part of the engine to ensure the compression ratio and combustion efficiency in the combustion chamber.
[0033] As introduced in the background art, the following technical problems exist in the design of the oil filling port in the prior art:
[0034] ① The diameter of the filling port is relatively large, increasing the risk of foreign objects from the outside entering.
[0035] ② Once foreign objects enter, the removal process is complex, which may lead to an increase in the engine maintenance cost.
[0036] ③ There is a lack of effective protection measures and it is unable to effectively prevent foreign objects from slipping in during the filling process.
[0037] Aiming at the deficiencies of the prior art, the purpose of this embodiment is to provide an oil filling port structure (or oil injection structure) with a protection function, which can effectively prevent large foreign objects from slipping in, thereby improving the overall performance and reliability of the engine.
[0038] In an embodiment of the present utility model, an oil injection structure is proposed, including: an oil injection cylinder 1, a bracket 2, and a baffle 3; an oil injection cavity 11 is provided in the middle of the oil injection cylinder 1; a plurality of brackets 2 are provided, one end of the bracket 2 is connected to the oil injection cylinder 1, and the other end of the bracket 2 is connected to the baffle 3. An oil filling port is formed between adjacent two brackets 2, the side wall of the oil injection cylinder 1, and the baffle 3; a guiding part 4 protrudes from the center of the baffle 3 towards the side of the oil injection cavity 11. The guiding part 4 is a thin-wall structure, an exhaust cavity 42 is formed inside, an air release hole 41 is provided at the protruding end of the guiding part 4, and the air release hole 41 communicates the oil injection cavity 11 and the exhaust cavity 42 inside the guiding part 4. The height of the guiding part 4 along the axial direction of the oil injection cylinder 1 is greater than the length of the bracket 2 along the axial direction of the oil injection cylinder 1.
[0039] As Figure 1 、 Figure 2 shown, this oil injection structure is composed of an oil injection cylinder 1, a bracket 2, and a baffle 3. An oil injection cavity 11 is provided in the middle of the oil injection cylinder 1. There are multiple brackets 2, one end is connected to the oil injection cylinder 1, and the other end is connected to the baffle 3 to form an oil filling port. The center of the baffle 3 protrudes to form a guiding part 4, which effectively prevents splashing during the oil filling process. The guiding part 4 is a thin-wall structure, an exhaust cavity 42 is formed inside, and an air release hole 41 is provided at the protruding end to realize the exhaust function during the oil injection process. The height of the guiding part 4 is greater than the height of the bracket 2, ensuring the smoothness of the oil flow and the exhaust efficiency.
[0040] When refueling, the fuel injection structure enters the fuel tank through the fuel injection port formed by the support 2, the baffle 3 and the fuel injection cylinder 1 via the fuel injection chamber 11 of the fuel injection cylinder 1. The baffle 3 and the support 2 are used to block foreign objects slipping into the fuel injection cylinder 1 from the outside, reducing the risk of foreign objects entering the engine interior from the outside and preventing engine failures caused by foreign objects. By designing an easy-to-operate protective structure, the process of removing foreign objects is simplified and the maintenance difficulty is reduced. The operating reliability of the engine is improved and the service life of the engine is extended. Moreover, a diversion part 4 is designed in the middle of the baffle 3 for guiding and diverting, preventing splashing during the engine oil filling process. At the same time, an air vent 41 is opened at the top of the diversion part 4 for exhausting air during the engine oil filling process. The height of the air vent 41 is arranged higher than the engine oil filling port, ensuring smooth oil inlet.
[0041] Along the axial direction of the fuel injection cylinder 1, the cross-section of the diversion part 4 near the baffle 3 is larger than the cross-section of the diversion part 4 far from the baffle 3.
[0042] As Figure 2 shown in the cross-section design: the cross-section of the diversion part 4 shows a gradually increasing trend in the axial direction, that is, the cross-section of the diversion part 4 near the baffle 3 (i.e., the lower end) is larger than the cross-section of the diversion part 4 far from the baffle 3 (i.e., the upper end), forming a gradually expanding structure. This design is beneficial to the guiding and diverting of engine oil when entering the fuel injection chamber 11, improving the smoothness and efficiency of fuel injection.
[0043] The outer contour of the diversion part 4 is a conical structure. The small end of the conical structure is located in the fuel injection chamber 11. The air vent 41 is opened at the small end of the conical structure. The large end of the conical structure is connected to the baffle 3.
[0044] As Figure 2 shown, the outer contour of the diversion part 4 adopts a conical structure. The small end of the conical structure is located in the fuel injection chamber 11. The air vent 41 for exhausting air is opened at the small end of the conical structure, which is beneficial for rapid air exhaust. The large end of the conical structure is connected to the baffle 3, making the entire diversion part 4 structure more stable. This conical diversion part 4 design is beneficial to the guiding and diverting of engine oil during the fuel injection process and is also beneficial to the discharge of gas.
[0045] The small end of the conical structure is an arc surface. The connection between the large end of the conical structure and the baffle 3 is transitioned by a fillet. As Figure 2 shown, the small end of the conical structure is an arc surface. This design is beneficial to the guiding and diverting of engine oil when entering the fuel injection chamber 11, providing better hydrodynamic characteristics, reducing turbulence, and improving fuel injection efficiency. The connection between the large end of the conical structure and the baffle 3 is transitioned by a fillet, enhancing the structural stability, reducing stress concentration at the same time. Moreover, it makes the entire diversion part 4 structure smoother, reduces fluid resistance, and improves the smoothness and efficiency of fuel injection.
[0046] The upper end of the bracket 2 is connected to the side wall of the oil injection cylinder 1, and the lower end of the bracket 2 is connected to the outer edge of the baffle 3. As Figure 1 shown, the upper end of the bracket 2 is connected to the side wall of the oil injection cylinder 1, and the lower end is connected to the outer edge of the baffle 3, ensuring the stability of the oil injection port and being able to firmly support the oil injection structure.
[0047] As Figure 1 shown, the brackets 2 are evenly arranged in a circumferential array along the center of the baffle 3, providing uniform supporting force, ensuring the stability of the baffle 3. Moreover, it makes the distribution of the oil injection structure on the baffle 3 more uniform, which is beneficial to the uniform distribution and flow of engine oil. This arrangement is also beneficial to the stability and reliability of the oil injection structure. In this embodiment, the baffle 3 and the oil injection cylinder 1 are connected by four brackets 2, and the engine oil enters the engine through the axial gap between the oil injection cylinder 1 and the baffle 3.
[0048] The oil injection cylinder 1, the bracket 2, the baffle 3 and the diversion part 4 can be manufactured by integral injection molding, making the entire oil injection structure a whole, improving the stability and reliability of the structure. This manufacturing method is also beneficial to reducing the number of parts, reducing the assembly cost, improving the production efficiency, reducing the production cost, and having a high degree of integration. Of course, it can be understood that other connection methods can also be used.
[0049] The oil injection structure can be arranged on the cylinder head cover, matching the integrated design of the engine, which is convenient for users to add and maintain engine oil. However, it is not limited to the oil filling port integrated on the cylinder head cover, and can also be arranged on the gear chamber.
[0050] Based on the above oil injection structure, an embodiment of the present invention further provides a cylinder head cover, on which the above-mentioned oil injection structure is arranged, wherein the upper end of the oil injection cylinder 1 is connected to the cylinder head cover. The cylinder head cover integrates the above-mentioned oil injection structure, providing a new way of engine oil filling, improving the convenience and reliability of engine maintenance.
[0051] Based on the above cylinder head cover, an embodiment of the present invention further provides an engine, improving the maintenance efficiency and service life of the entire engine.
[0052] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications or deformations that can be made without creative labor on the basis of the technical solution of the present invention are still within the protection scope of the present invention.
Claims
1. An oil injection structure, characterized in that: include: Oil filling cylinder, bracket and baffle; The oil filling cylinder has an oil filling cavity in the middle; The bracket is provided with a plurality of brackets, one end of the bracket is connected to the oil filling cylinder, the other end of the bracket is connected to the baffle, and an oil filling port is formed between two adjacent brackets and the side wall of the oil filling cylinder and the baffle; The center of the baffle plate protrudes toward one side of the oil filling chamber to form a guide portion. The guide portion is a thin-walled structure with an exhaust chamber formed inside. A vent hole is provided at the protruding end of the guide portion. The vent hole connects the oil filling chamber with the exhaust chamber inside the guide portion. The height of the guide portion along the axial direction of the oil filling cylinder is greater than the length of the bracket along the axial direction of the oil filling cylinder.
2. The oil injection structure according to claim 1, characterized in that: Along the axial direction of the oil filling cylinder, the cross section of the guide portion close to the baffle is larger than the cross section of the guide portion far from the baffle.
3. The oil injection structure according to claim 2, characterized in that: The outer contour of the guide part is a conical structure, the small end of the conical structure is located in the oil filling cavity, the air release hole is opened at the small end of the conical structure, and the large end of the conical structure is connected to the baffle.
4. The oil injection structure according to claim 3, characterized in that: The small end of the conical structure is an arc-shaped surface, and the connection between the large end of the conical structure and the baffle is transitioned through a rounded corner.
5. The oil injection structure according to claim 1, characterized in that: The upper end of the bracket is connected to the side wall of the oil filling cylinder, and the lower end of the bracket is connected to the outer edge of the baffle.
6. The oil injection structure according to claim 5, characterized in that: The brackets are evenly arranged in a circular array along the center of the baffle.
7. The oil injection structure according to claim 5, characterized in that: The oil filling cylinder, the bracket, the baffle and the guide part are integrally injection-molded.
8. The oil injection structure according to claim 1, characterized in that: The oil injection structure is arranged on the cylinder head cover.
9. A cylinder head cover, characterized in that: The cylinder head cover is provided with an oil injection structure as claimed in any one of claims 1 to 8, wherein the upper end of the oil injection cylinder is connected to the cylinder head cover.
10. An engine, characterized in that: Comprising the cylinder head cover as claimed in claim 9.