Engine body oil duct structure and engine

Abstract

The utility model relates to the technical field of engines, in particular to an engine body oil duct structure and an engine. A first oil duct and a second oil duct are arranged in the machine body, the first oil duct and the second oil duct are provided with position points with the minimum wall thickness, a lining is arranged in the first oil duct, and the lining is communicated with an oil duct inlet and an oil duct outlet of the first oil duct. An open groove is formed in the pipe wall of the lining and is formed in the axial direction of the lining, and the two ends of the open groove extend to the two ends of the pipe wall. The outer diameter of the pipe wall is larger than the diameter of the first oil channel, the lining is installed in the first oil channel in an interference mode, the pipe wall is isolated at the position point with the minimum wall thickness, and the open groove is far away from the position point with the minimum wall thickness in the circumferential direction. According to the utility model, an oil duct with a larger size is arranged in the same space, so that the lubricating efficiency and the heat dissipation performance are improved, and meanwhile, the lightweight design of a machine body is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine oil channel structure and an engine. Background Art

[0002] In the field of diesel engine design and manufacturing, the optimization of the oil channel structure is of great significance to improving the performance and reliability of the whole engine. The oil channel structure is not only related to the efficiency of the lubrication system, but also directly affects the heat dissipation and lightweight design of the engine.

[0003] In the existing diesel engine oil channel structure, the oil channels need to be arranged with a certain wall thickness distance, that is, the oil channels need to be kept at a certain distance to avoid mutual interference. Although this design meets the functional requirements to a certain extent, it is limited by the engine structure and the oil channel size is often small, which affects the lubrication and heat dissipation effects. In the prior art, the layout and size selection of the oil channel usually requires a trade-off between ensuring the function and the engine strength.

[0004] Therefore, the rigid requirements of the existing engine structure limit the optimization space of the oil channel and affect the flexibility of the overall design. Under the condition of limited space, it is difficult to arrange a larger oil channel. The oil channel size of the engine oil channel structure is limited, resulting in insufficient lubrication and heat dissipation efficiency, which limits the improvement of diesel engine performance. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the embodiments of the utility model is to provide a body oil channel structure to solve the limitations of the body oil channel structure in the prior art. Through a novel bushing isolation oil channel structure, a larger oil channel can be arranged in the same space, thereby improving the lubrication efficiency and heat dissipation performance while maintaining the lightweight design of the body.

[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0007] A body oil channel structure, the body having a first oil channel and a second oil channel, the first oil channel and the second oil channel having a minimum wall thickness position point, a bushing is provided in the first oil channel, the bushing connects the oil channel inlet and the oil channel outlet of the first oil channel; an open groove is provided on the tube wall of the bushing, the open groove is arranged along the axial direction of the bushing, and the two ends of the open groove extend to the two ends of the tube wall; the outer diameter of the tube wall is larger than the diameter of the first oil channel, the bushing is interference installed in the first oil channel, the tube wall is isolated at the minimum wall thickness position point, and the open groove is far away from the minimum wall thickness position point in the circumferential direction.

[0008] Optionally, a first incision is provided on the tube wall of the bushing, the first incision is located on the side of the tube wall away from the minimum position point, the inner side of the first incision is radially connected to the bushing, and the outer side of the first incision is connected to the oil channel inlet and / or the oil channel outlet.

[0009] Optionally, the second oil channel is arranged on one side of the first oil channel, and the oil channel inlet and the oil channel outlet are arranged on the other side of the first oil channel, and the oil channel inlet axis and the oil channel outlet axis are both perpendicular to the axis of the first oil channel, wherein the oil channel outlet is located at one end of the first oil channel, the oil channel inlet is located at a predetermined position of the first oil channel away from the end, and the first incision is connected to the oil channel inlet.

[0010] Optionally, a positioning card is provided on the tube wall of the bushing, the distance from the radial outer end of the positioning card to the center of the bushing is greater than the radius of the outer diameter of the bushing, and a positioning groove is provided on the inner hole of the first oil channel, and the positioning card is inserted into the positioning groove.

[0011] Optionally, the positioning groove is located on a side of the first oil channel circumferentially away from the second oil channel, the opening groove and the positioning card are located in the same circumferential direction of the bushing wall, and the positioning card is a bending structure extending from the opening groove to a direction away from the center of the wall.

[0012] Optionally, the positioning card is located at the axial end of the tube wall, and the first cutout is in close contact with the positioning card in the axial direction.

[0013] Optionally, the axial length of the bushing is smaller than the axial depth of the first oil channel, and a screw plug is detachably mounted at the end of the first oil channel, and an inner end of the screw plug abuts against the end of the bushing.

[0014] Optionally, a second cutout is further provided on the tube wall of the bushing, and the second cutout is located on the back side of the opening groove in the circumferential direction and away from the position point of minimum wall thickness in the axial direction.

[0015] Optionally, the first incision and the second incision have a set distance in the axial direction.

[0016] An embodiment of the utility model further provides an engine, comprising the engine body oil channel structure as described above.

[0017] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0018] 1. In the oil channel structure of the engine, by installing a bushing in the first oil channel, the oil channel is effectively isolated, especially at the position where the wall thickness of the first oil channel and the second oil channel is the smallest, which reduces the layout space of the engine. This design not only simplifies the structure, but also increases the size of the oil channel in the same space, and enhances the lubrication and heat dissipation capabilities.

[0019] 2. The open groove is designed on the tube wall of the bushing, extending axially to both ends of the bushing. At the same time, the outer diameter of the bushing is slightly larger than the diameter of the first oil passage. This design helps the bushing to maintain a certain adaptability during installation, so that it can be installed in the first oil passage in an interference fit manner, ensuring the close fit between the bushing and the oil passage of the body, and easy installation. At the same time, it prevents the bushing from being affected by the fluid during operation, resulting in axial movement and wear, as well as adverse effects on the flow, thereby improving installation convenience and structural stability.

[0020] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 is a cross-sectional view of a bushing provided in an embodiment of the utility model installed in a first oil passage;

[0023] Figure 2 It is a schematic diagram of the side of the bushing opening groove provided by the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the bushing provided in an embodiment of the utility model, facing away from the opening groove;

[0025] Figure 4 It is a schematic diagram of the end face of the bushing provided in the embodiment of the utility model installed in the first oil passage;

[0026] In the figure: 1, machine body; 2, bushing; 3, screw plug;

[0027] 11. Oil channel inlet; 12. First oil channel; 13. Oil channel outlet; 14. Second oil channel; 15. Positioning groove;

[0028] 21. Positioning card; 22. Opening slot; 23. First incision; 24. Second incision;

[0029] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] As introduced in the background technology, the rigid requirements of the existing engine body structure limit the optimization space of the oil channel and affect the flexibility of the overall design. When the space is limited, it is difficult to realize the layout of a larger oil channel. The oil channel size of the engine body oil channel structure is limited, resulting in insufficient lubrication and heat dissipation efficiency, which limits the improvement of diesel engine performance. In order to solve the above technical problems, this embodiment achieves lightweighting of the engine body through a compact layout while ensuring the functionality and efficiency of the oil channel.

[0032] like Figure 1 As shown, the body 1 has a first oil passage 12 and a second oil passage 14, and the first oil passage 12 and the second oil passage 14 have a minimum wall thickness position point, wherein the first oil passage 12 and the second oil passage 14 at the minimum position point can be in a connected state or a disconnected state, but the wall thickness is very thin. The first oil passage 12 is provided with a bushing 2, and the bushing 2 connects the oil passage inlet 11 and the oil passage outlet 13 of the first oil passage 12; an opening groove 22 is provided on the tube wall of the bushing 2, and the opening groove 22 is arranged along the axial direction of the bushing 2, and the two ends of the opening groove 22 extend to the two ends of the tube wall, that is, the opening groove 22 is a through groove that passes through the two ends; the outer diameter of the tube wall is greater than the diameter of the first oil passage 12, and greater here means that the bushing 2 can be installed in the first oil passage 12 by clamping the opening groove 22, and the tube wall is isolated at the minimum wall thickness position point, and the opening groove 22 is far away from the minimum wall thickness position point in the circumferential direction.

[0033] The body oil channel structure comprises a first oil channel 12 and a second oil channel 14, and a bushing 2 is installed in the first oil channel 12. The installation of the bushing 2 can effectively isolate the mutual influence between the two oil channels, especially at the position point where the wall thickness of the first oil channel 12 and the second oil channel 14 is the smallest. By adopting the bushing 2, the stability and safety of the oil channel can be ensured.

[0034] The opening groove 22 is designed on the tube wall of the bushing 2, extending axially to both ends of the bushing 2. At the same time, the outer diameter of the bushing 2 is slightly larger than the diameter of the first oil passage 12. Such a design helps the bushing 2 to maintain a certain adaptability during installation, so that it can be installed in the first oil passage 12 in an interference fit manner, ensuring the close fit between the bushing 2 and the oil passage of the body 1, and convenient installation. At the same time, it prevents the bushing 2 from being affected by the fluid during operation, thereby preventing the axial movement and wear of the bushing 2 and adverse effects on the flow, thereby improving the installation convenience and structural stability.

[0035] The tube wall of the bushing 2 is provided with a first cutout 23, which is located on the side of the tube wall away from the minimum position point, the inner side of the first cutout 23 is radially connected to the bushing 2, and the outer side of the first cutout 23 is connected to the oil passage inlet 11 and / or the oil passage outlet 13. The first cutout 23 is provided to achieve communication when the oil passage inlet 11 or the oil passage outlet 13 of the oil passage is perpendicular to the first oil passage 12 and is not located at the end.

[0036] For example, in this embodiment, if Figure 1 As shown, the second oil passage 14 is arranged on one side (right side) of the first oil passage 12, the oil passage inlet 11 and the oil passage outlet 13 are arranged on the other side (left side) of the first oil passage 12, and the axis of the oil passage inlet 11 and the axis of the oil passage outlet 13 are both perpendicular to the axis of the first oil passage 12, wherein the oil passage outlet 13 is located at one end of the first oil passage 12, the oil passage inlet 11 is located at a predetermined position of the first oil passage 12 away from the end, and the first cutout 23 is connected to the oil passage inlet 11. Among them, the first oil passage 12 is an oil passage after the oil filter, the oil passage inlet 11 is an oil passage inlet 11 after the oil filter, the oil passage outlet 13 is an oil passage outlet 13 after the oil filter, and the second oil passage 14 is a main oil passage.

[0037] In this structure, the second oil passage 14 and the first oil passage 12 are arranged closely inside the engine body 1, but in different directions to ensure a more compact layout between the oil passages. The oil passage inlet 11 and the oil passage outlet 13 are arranged in such a way that the engine oil can enter laterally from the first cutout 23 of the first oil passage 12 and flow out smoothly at the other end through the bushing 2. The advantage of this design is that it can adapt to different pipeline layouts and improve adaptability, and the arrangement of the first cutout 23 facilitates the removal of the bushing 2.

[0038] When the first incision 23 is required to be horizontally connected, the angle of the bushing 2 needs to be fixed. Figure 2 , Figure 3As shown, a positioning card 21 is provided on the tube wall of the bushing 2, and the distance from the radial outer end of the positioning card 21 to the center of the bushing 2 is greater than the radius of the outer diameter of the bushing 2 (i.e., it is protruding), and a positioning groove 15 is provided on the inner hole of the first oil passage 12 (as shown in FIG. Figure 4 As shown in FIG. 1 , the positioning card 21 is inserted into the positioning groove 15. The cooperation between the positioning card 21 and the positioning groove 15 ensures that the bushing 2 can be stably fixed inside the first oil passage 12 after installation without rotation.

[0039] The positioning groove 15 is located on the side of the first oil passage 12 circumferentially away from the second oil passage 14, and the opening groove 22 and the positioning card 21 are located in the same circumferential direction of the tube wall of the bushing 2, that is, the opening groove 22 passes through the positioning card 21, and the positioning card 21 is a bending structure from the opening groove 22 to the direction away from the center of the tube wall. The position of the positioning groove 15 is selected on the side away from the second oil passage 14 to avoid the opening groove 22 and the second oil passage 14 being aligned and thus causing oil leakage.

[0040] The positioning card 21 is located at the axial end of the tube wall, and the first cutout 23 is tightly attached to the positioning card 21 in the axial direction to facilitate processing and installation. This compact layout helps to minimize the occupation of the internal space of the oil channel while ensuring the stability of the bushing 2, thereby achieving more efficient oil flow in a limited space.

[0041] The axial length of the bushing 2 is smaller than the axial depth of the first oil passage 12. A screw plug 3 is detachably mounted at the end of the first oil passage 12, and the inner end of the screw plug 3 abuts against the end of the bushing 2. The screw plug 3 can be detachably mounted at the end of the oil passage by means of threaded connection, etc., and the inner end of the screw plug 3 can abut against the end of the bushing 2, thereby ensuring the sealing of the oil passage and facilitating maintenance and replacement.

[0042] like Figure 3 As shown, a second cutout 24 is also provided on the tube wall of the bushing 2. The second cutout 24 is located on the back side of the opening groove 22 in the circumferential direction and is away from the minimum wall thickness position in the axial direction. The second cutout 24 can reduce the rigidity of the bushing 2, facilitate deformation of the bushing 2, and facilitate installation. At the same time, the second cutout 24 is away from the minimum wall thickness position in the axial direction to avoid adverse effects on the strength of the oil channel.

[0043] The first cutout 23 and the second cutout 24 have a set distance in the axial direction, such as Figure 2 As shown, the first cutout 23 of a certain length is conveniently aligned with the oil passage inlet 11, so that the oil can smoothly enter and flow out of the oil passage through the cutout.

[0044] Structural principle:

[0045] The oil passing through the oil filter enters the oil cooler through the oil passage inlet 11 , the first oil passage 12 and the oil passage outlet 13 .

[0046] Due to structural layout reasons, the first oil passage 12 and the second oil passage 14 are arranged in space and intersected. To prevent the cold front oil from mixing with the oil in the second oil passage 14, a thin-walled bushing 2 is used to separate them.

[0047] The bushing 2 is made of thin-walled stainless steel and is positioned with respect to the oil passage of the engine body 1 by means of a positioning card 21 . A positioning groove 15 is arranged at the end of the oil passage of the engine body 1 .

[0048] For ease of installation, the bushing 2 is designed as an open structure, which is clamped by tooling, and the open groove 22 is closed before being installed into the oil passage. After installation, the open groove 22 opens naturally, and the bushing 2 and the oil passage are interference fit.

[0049] In order to allow the oil at the oil passage inlet 11 to smoothly enter the first oil passage 12 , a first cutout 23 is provided on the bushing 2 .

[0050] For ease of installation, a second cutout 24 is also provided on the other side of the bushing 2 body, which can effectively reduce the rigidity of the bushing 2 . The cutout should be arranged away from the second oil passage 14 .

[0051] In summary, this embodiment provides an oil passage structure with a simple structure and compact arrangement, which is suitable for the design of diesel engines with limited space. By increasing the size of the oil passage, the lubrication and heat dissipation efficiency is improved, which helps to improve the overall performance of the diesel engine. The thin-wall design of the bushing 2 helps to reduce the weight of the engine body 1, which is in line with the development trend of modern mechanical design.

[0052] Based on the above-mentioned body oil channel structure, the embodiment of the utility model also provides an engine, in which the body oil channel structure described in the above-mentioned embodiment is provided. By adopting the above-mentioned oil channel structure, the oil channel layout efficiency and overall performance of the engine can be effectively improved. The body 1 of the engine has a more compact structure and a larger oil channel size, which can achieve a better oil flow effect, thereby improving the cooling and lubrication performance of the engine. By adopting the technical solution of the present invention, the lightweight design of the engine body 1 can be achieved, the material usage and cost can be reduced, and the overall economy and environmental performance of the engine can be improved.

[0053] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the protection scope of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims

1. A body oil channel structure, characterized in that: The body has a first oil passage and a second oil passage, the first oil passage and the second oil passage have a minimum wall thickness position point, a bushing is provided in the first oil passage, and the bushing is connected to the oil passage inlet and the oil passage outlet of the first oil passage; An open groove is arranged on the tube wall of the bushing, the open groove is arranged along the axial direction of the bushing, and two ends of the open groove extend to two ends of the tube wall; The outer diameter of the tube wall is larger than the diameter of the first oil passage, the bushing is interference-fitted in the first oil passage, the tube wall is isolated at the point where the wall thickness is minimum, and the opening groove is circumferentially away from the point where the wall thickness is minimum.

2. The engine oil passage structure according to claim 1, characterized in that: A first cutout is provided on the tube wall of the bushing, the first cutout is located on the side of the tube wall away from the minimum position point, the inner side of the first cutout is radially connected to the bushing, and the outer side of the first cutout is connected to the oil channel inlet and / or the oil channel outlet.

3. The engine oil passage structure according to claim 2, characterized in that: The second oil channel is arranged on one side of the first oil channel, and the oil channel inlet and the oil channel outlet are arranged on the other side of the first oil channel, and the oil channel inlet axis and the oil channel outlet axis are both perpendicular to the axis of the first oil channel, wherein the oil channel outlet is located at one end of the first oil channel, the oil channel inlet is located at a predetermined position of the first oil channel away from the end, and the first incision is connected to the oil channel inlet.

4. The engine oil passage structure according to claim 2, characterized in that: A positioning card is arranged on the tube wall of the bushing, the distance from the radial outer end of the positioning card to the center of the bushing is greater than the radius of the outer diameter of the bushing, and a positioning groove is arranged on the inner hole of the first oil channel, and the positioning card is inserted into the positioning groove.

5. The engine oil passage structure according to claim 4, characterized in that: The positioning groove is located on a side of the first oil passage circumferentially away from the second oil passage, the opening groove and the positioning card are located in the same circumferential direction of the bushing tube wall, and the positioning card is a bending structure from the opening groove to a direction away from the center of the tube wall.

6. The engine oil passage structure according to claim 4, characterized in that: The positioning card is located at the axial end of the tube wall, and the first cutout is in close contact with the positioning card in the axial direction.

7. The engine oil passage structure according to claim 2, characterized in that: The axial length of the bushing is smaller than the axial depth of the first oil passage. A screw plug is detachably mounted at the end of the first oil passage, and the inner end of the screw plug abuts against the end of the bushing.

8. The engine oil passage structure according to claim 7, characterized in that: A second cutout is also provided on the tube wall of the bushing. The second cutout is located on the back side of the opening groove in the circumferential direction and is away from the position point with the minimum wall thickness in the axial direction.

9. The engine oil passage structure according to claim 8, characterized in that: The first cutout and the second cutout have a set distance in the axial direction.

10. An engine, characterized in that: It comprises the engine body oil channel structure as described in any one of claims 1 to 9.

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