Combined piston ring sealing structure capable of reducing air leakage, air leakage temperature and air leakage impact force
By designing the positioning points and air leakage channels of the upper ring, the lower outer ring and the lower inner ring in the engine piston ring, the problems of large air leakage, high temperature and high impact force are solved, and better sealing performance and engine power output are achieved.
Patent Information
- Application Number
- CN202510558568.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-07-18
AI Technical Summary
The existing engine piston rings have problems such as large air leakage, high air leakage temperature, large air leakage impact force, and the closing clearance increases after wear, resulting in a decrease in engine power.
The upper ring, lower outer ring and lower inner ring are used to match the positioning points, combined with the air leakage channel design, by processing 360-degree air leakage channels and open air leakage channels on the lower inner ring, the length of the air leakage channel is extended, the contact area between the air leakage and the piston ring is increased, and the direction of leakage movement is changed to reduce the impact force on the cylinder wall.
It effectively reduces the amount of air leakage, air leakage temperature and air leakage impact force, ensures that the sealing performance does not decrease significantly after wear, and improves the sealing effect and power performance of the engine.
Smart Images
Figure CN120332002A_ABST
Abstract
Description
Technical Field
[0001] The piston ring sealing structure of the present invention is mainly used in the field of engine piston ring sealing. Background Art
[0002] Currently, the piston rings installed in a large number of engines have problems such as large air leakage volume, high air leakage temperature, large air leakage impact force. After wear, the closing gap increases and the air leakage volume increases, resulting in a decrease in engine power. Summary of the Invention
[0003] Through physical structure innovation, the present invention consists of an upper ring, a lower outer ring, a lower inner ring, matching positioning points, and air leakage channels, achieving a reduction in the air leakage volume of the engine piston ring, a decrease in the air leakage temperature, a reduction in the air leakage impact force, and ensuring that when the piston ring wears and the closing gap increases, the change in the air leakage volume is not significant. Through the air leakage channels, the contact area between the air leakage and the piston ring is increased, the air leakage temperature is reduced, the movement direction of the air leakage is changed, so that the air leakage does not directly impact the cylinder wall, and the air leakage impact force is reduced.
[0004] The technical solution of the present invention mainly relates to the physical sealing structure of the piston ring. The sealing structure refers to the attached Figure 1 , and involves an upper ring 0.1, a lower outer ring 0.2, a lower inner ring 0.3, a lower inner ring positioning 0.5, an upper ring positioning 0.6, a lower outer ring positioning 0.4, a 360-degree circumferential air leakage channel 0.7 of the lower inner ring, and an air leakage channel 0.8 of the lower inner ring. The upper ring and the lower inner ring and outer ring are in the same piston ring groove. Among them, the lower inner ring and the lower outer ring are on the same horizontal plane. The inner and outer ring positioning is achieved through the positioning boss (0.4) of the lower outer ring. The lower plane of the upper ring is closely attached to the upper planes of the lower inner and outer rings. The positioning between the upper ring and the lower rings is achieved through the positioning concave point (0.6) of the upper ring and the positioning convex point (0.5) of the lower inner ring. By machining a 360-degree circumferential air leakage channel (0.7) along the inner side edge of the lower inner ring and an air leakage channel (0.8) at the opening, the length of the air leakage channel is extended, the contact area between the air leakage and the piston ring is increased, the air leakage temperature is reduced, the movement direction of the air leakage is changed, a counter-flow air current is generated, and the impact force of the air leakage on the cylinder wall is reduced. The attached Figure 1 is only one structural form when the piston ring sealing structure of the present invention is disassembled.
[0005] To better illustrate the present invention, the following is a brief description of the accompanying drawings Figures 1 to 4 .
[0006] The attached Figure 1 is a schematic diagram when the components of one structure of the piston ring of the present invention are disassembled.
[0007] The attached Figure 2 is a schematic diagram of different forms and structures of the piston ring of the present invention, including different implementation modes of the air leakage channels.
[0008] Appendix Figure 3 It is a schematic diagram of the piston ring of the present invention in different forms and structures, including different embodiments of the leakage channels.
[0009] Appendix Figure 4 It is a schematic diagram of the partial structure of the piston ring of the present invention, including different embodiments of the leakage channels. Description of the Drawings
[0010] Figure 0 is a schematic diagram of the split structure of the piston ring.
[0011] 0.1 is the upper ring body.
[0012] 0.2 is the lower outer ring body.
[0013] 0.3 is the lower inner ring body.
[0014] 0.4 is the radial positioning boss of the lower outer ring.
[0015] 0.5 is the longitudinal positioning bump of the lower inner ring.
[0016] 0.6 is the longitudinal positioning concave point of the upper ring.
[0017] 0.7 is the leakage channel along the ring body of the lower inner ring.
[0018] 0.8 is the leakage channel at the opening of the lower inner ring.
[0019] 0.9 is the opening of the lower inner ring body.
[0020] 0.10 is the opening of the upper ring body.
[0021] 0.11 is the opening of the lower outer ring body.
[0022] Figure 1 is a schematic diagram of the split structure of the piston ring.
[0023] 1.1 is the longitudinal positioning bump of the lower inner ring.
[0024] Figure 2 is a schematic diagram of the split structure of the piston ring.
[0025] 2.1 is the leakage channel at the edge of the lower plane of the lower inner ring along the ring body.
[0026] Figure 3 is a schematic diagram of the combined structure when the piston ring is installed.
[0027] 3.1 is the positioning place of the upper ring and the lower ring body.
[0028] 3.2 is the leakage channel at the opening of the lower inner ring.
[0029] 3.3 is a schematic diagram of the state of the leakage channel of the lower inner ring at the outer ring opening along the ring body.
[0030] Figure 4 is a bottom view of one of the styles after the piston rings are assembled.
[0031] Figure 5 is a top view of one of the styles after the piston rings are assembled.
[0032] Figures 6 and 7 are side views of one of the styles after the piston rings are assembled.
[0033] Figure 8 is an exploded view of the leakage channel at the inner edge of the upper plane of the lower inner ring.
[0034] 8.1 is the leakage channel of the lower inner ring.
[0035] 8.2 is the leakage channel of the lower inner ring.
[0036] Figure 9 is a schematic diagram of one of the piston ring assembly structures.
[0037] 9.1 is the leakage channel at the opening of the lower inner ring.
[0038] Figure 10 is an exploded view of the leakage channel at the inner edge of the upper plane of the lower outer ring.
[0039] 10.1 is one of the styles of the leakage channel of the lower outer ring.
[0040] Figure 11 is an exploded view of the leakage channel at the inner edge of the lower plane of the lower outer ring.
[0041] 11.1 is one of the styles of the leakage channel of the lower outer ring.
[0042] Figure 12 is a schematic diagram of the simultaneous implementation of the leakage channel at the inner edges of the upper planes of the lower inner ring and the lower outer ring.
[0043] 12.1 is the leakage channel at the opening of the lower inner ring.
[0044] 12.2 is the combined leakage channel of the lower inner and outer rings.
[0045] Figure 13 is a schematic diagram of the implementation of the leakage channel on the lower plane of the upper ring body.
[0046] 13.1 is a schematic diagram of the implementation of the leakage channel along the 360-degree lower plane of the upper ring body.
[0047] 13.2 is a schematic diagram of the leakage channel that needs to be additionally processed when the leakage channel is implemented on the upper ring body.
[0048] Figure 14 is a schematic diagram of the simultaneous implementation of the leakage channel on the lower plane of the upper ring body and the upper planes of the lower inner and outer ring bodies.
[0049] 14.1 is the air leakage channel for the lower inner ring.
[0050] 14.2 is the air leakage channel for the upper ring.
[0051] 14.3 is the air leakage channel for the lower outer ring.
[0052] 14.4 is the air leakage channel for the upper ring.
[0053] Figure 15 is a schematic diagram of the air leakage channels implemented simultaneously on the lower planar ring bodies of the inner and outer rings.
[0054] 15.1 is a schematic diagram of the air leakage channel.
[0055] 15.2 is the air leakage channel at the opening of the lower inner ring. Detailed implementation method
[0056] As the first preferred solution: The air leakage channel is implemented on the lower planar ring body of the upper ring. See Figure 13 in the appendix, numbered 13.1 and 13.2. Figure 3 in the appendix.
[0057] As the second preferred solution: The air leakage channel is implemented on the inner corner of the upper planar ring body of the lower outer ring. See Figure 10 in the appendix, numbered 10.1. Figure 3 in the appendix.
[0058] As the third preferred solution: The air leakage channel is implemented on the inner corner of the lower planar ring body of the lower outer ring. See Figure 11 in the appendix, numbered 11.1. Figure 3 in the appendix.
[0059] As the fourth preferred solution: The air leakage channel is implemented on the inner corner of the lower planar ring body of the lower inner ring. See Figure 2 in the appendix, numbered 2.1. Figure 2 in the appendix.
[0060] As the fifth preferred solution: The air leakage channel is implemented on the inner corner of the upper planar ring body of the lower inner ring. See Figure 8 in the appendix, numbered 8.1. Figure 3 in the appendix.
[0061] As the sixth preferred solution: The air leakage channel is implemented on the inner corners of the upper planar ring bodies of the lower inner and outer rings. See Figure 12 in the appendix, numbered 12.2. Figure 3 in the appendix.
[0062] As the seventh preferred solution: The air leakage channel is implemented simultaneously on the lower planar surface of the upper ring and the inner corners of the upper planar ring bodies of the lower inner and outer rings. See Figure 14 in the appendix, numbered 14.1, 14.2, 14.3, 14.4. Figure 3 in the appendix.
[0063] As the preferred solution 8: The air leakage channels are implemented simultaneously on the inner side edges of the lower-layer inner and outer ring lower plane annular bodies. See the attached Figure 4 pictures 15 in Figure 4 , numbered 15.1 and 15.2.
[0064] Finally, select the preferred solution 4. After assembling the piston rings according to the attached Figure 2 pictures 3, install them in the first ring groove of the engine piston. Among them, the lower layer ring is in the same direction as the air leakage direction. The upper and lower, inner and outer rings are positioned respectively by their respective positioning points to prevent the ring opening from shifting and affecting the sealing performance.
Claims
1. The air leakage channel can be implemented 360 degrees on each ring body or in some areas.
2. The air leakage channel can be implemented only on the upper ring.
3. The air leakage channel can be implemented only on the lower inner ring.
4. The air leakage channel can be implemented only on the lower outer ring.
5. The air leakage channel can be implemented simultaneously on the lower outer ring and the inner ring.
6. The air leakage channel can be implemented simultaneously on the upper ring, the lower inner ring, and the lower outer ring.
7. The air leakage channel at the opening of the lower inner ring can be not implemented or implemented in other areas of the lower inner ring.
8. The air leakage channel at the opening of the lower inner ring can also be implemented on the side plane or the upper and lower plane rings of the radial positioning boss of the lower outer ring.
9. The form of the air leakage channel is not limited to the circular and square configurations in the drawings, and can also be other geometric structure configurations such as ellipse, square, triangle, polygon, etc.