CN212774531U - Low-blow-by-gas low-friction diesel engine piston ring assembly of 4L diesel engine - Google Patents
Low-blow-by-gas low-friction diesel engine piston ring assembly of 4L diesel engine Download PDFInfo
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- CN212774531U CN212774531U CN202020237711.1U CN202020237711U CN212774531U CN 212774531 U CN212774531 U CN 212774531U CN 202020237711 U CN202020237711 U CN 202020237711U CN 212774531 U CN212774531 U CN 212774531U
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Abstract
The utility model discloses a 4L diesel engine low blow-by volume low friction diesel engine piston ring subassembly relates to piston ring technical field. The oil-gas separator comprises a first gas ring, a second oil scraper ring and a third oil ring, wherein the outer circular surface of the first gas ring is in a barrel shape, the ring height is 2.5-2.8mm, the closed gap of the first gas ring is 0.25-0.38mm, and the inner circular chamfer angle of the first gas ring is C0.5; the second oil scraper ring is in a conical surface exchange structure and is in an anti-twisting structure, the closed gap of the second oil scraper ring is 0.6-0.8mm, the elasticity of the third oil scraper ring is 31.2-41.2N, the closed gap is 0.25-0.5mm, and the ring height is 3.0-3.2 mm. The utility model discloses a to piston ring structure adjustment reduce the piston ring blow-by passageway, promote sealing performance, improve the friction work through descending elasticity, improved the piston ring wearability after reducing elasticity simultaneously to promote the reliability of complete machine.
Description
Technical Field
The utility model relates to a piston ring subassembly technical field, especially a low gas channeling volume low friction diesel engine piston ring subassembly of 4L diesel engine.
Background
Along with the development of society, people's environmental protection consciousness is constantly strengthened, and the national requirement to emission index is also stricter and stricter in recent years, and the piston ring that is used for sealed, oil control and heat transfer effect just has the key effect to the operating efficiency and whether can stable operation of internal-combustion engine.
The prior piston ring has unsatisfactory effects on air blow-by quantity and friction work. The friction loss of the piston ring and the cylinder sleeve system accounts for more than 25% of the total friction loss, and the reduction of the friction loss is beneficial to improving the mechanical efficiency, reducing the emission of CO2 and reducing the consumption rate of fuel oil. Firstly, the engine type of the prior displacement has a high piston movement speed, and meanwhile, the engine type is upgraded in emission, the maximum design detonation pressure is improved by 20 percent compared with the national fifth, and the corresponding blow-by amount exceeds the design range. Secondly, the axial thickness and the radial thickness of the existing piston ring are large, the contact area with a cylinder sleeve is large, meanwhile, the tangential elasticity of the ring is large, the friction is also increased, and the service life of the cylinder and the piston ring is influenced.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a 4L diesel engine hangs down low friction diesel engine piston ring subassembly of blowby gas volume reduces the piston ring blowby gas passageway, promotes sealing performance through the adjustment of piston ring structure, improves the friction merit, has promoted the piston ring wearability simultaneously to promote the complete machine reliability.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
A4L diesel engine low blow-by amount low friction diesel engine piston ring assembly, including first gas ring, second oil scraper ring, third oil ring, the excircle of said first gas ring is inclined to the barrel-shaped, the ring height is 2.5-2.8mm, the said first gas ring closed gap is 0.25-0.38mm, the inner circle chamfer of said first gas ring is C0.5; the second oil scraper ring is in a conical surface exchange structure and is in an anti-twisting structure, the closed gap of the second oil scraper ring is 0.6-0.8mm, the elasticity of the third oil scraper ring is 31.2-41.2N, the closed gap is 0.25-0.5mm, and the ring height is 3.0-3.2 mm. Therefore, the piston ring assembly is adjusted to reduce the elasticity of the piston ring, and the friction work is reduced, so that the sealing performance of the piston ring is improved, the air blow-by amount is reduced, and the performance of the whole machine is well improved. In addition, the first gas ring can be made of steel material. Such an arrangement may promote the following of the first gas ring.
Preferably, the surface coating of the first gas ring is a chromium and diamond composite coating. Such an arrangement may increase its hardness and wear resistance.
Preferably, the first gas ring is of a positive torsion structure. The running-in performance of the first gas ring is improved, the side sealing performance is improved, and a gas leakage passage is reduced.
Preferably, the elastic force of the first gas ring is 14.3-22.3N. The arrangement can reduce the deformation elasticity and reduce the friction between the first air ring and the cylinder wall.
Preferably, the outer circular surface of the second oil scraper ring is a chromium coating with surface phosphating treatment. Thus, the performance of the running-in and tensile cylinder can be improved, and the effects of corrosion prevention and rust prevention are achieved.
Preferably, the surface plating layer of the third oil ring is a chromium and ceramic composite plating layer. Such an arrangement can increase the hardness and wear resistance of the third oil ring.
The utility model has the advantages that:
1. the utility model provides a 4L diesel engine low blow-by volume low friction diesel engine piston ring subassembly, the inner circle chamfer of one ring makes the first ring form the distortion, improves the leakproofness of side;
2. the utility model provides a piston ring component of a 4L diesel engine with low blow-by amount and low friction, which can reduce elasticity and friction work by adjusting the height and thickness of a ring;
3. the utility model provides a pair of low friction diesel engine piston ring subassembly of 4L diesel engine low blowby volume adopts second ring to close a clearance size and is greater than a ring and closes a clearance, increases the pressure differential between a second ring for terminal surface leakproofness promotes under one ring, reduces the blowby volume.
Drawings
Fig. 1 is a schematic structural diagram of a piston ring assembly of a 4L diesel engine with low blow-by amount and low friction according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a second oil scraper ring in a piston ring assembly of a 4L diesel engine with low blow-by amount and low friction according to an embodiment of the present invention;
in the figure, 1-cylinder, 2-piston, 3-first gas ring, 4-second oil scraper ring and 5-third oil ring.
Detailed Description
In order to explain the technical content, the achieved objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.
Examples
As shown in fig. 1 and 2, the utility model provides a piston ring assembly of a 4L diesel engine with low blow-by volume and low friction, a piston 2 is arranged in a cylinder 1, the piston 2 comprises a first gas ring 3, a second oil scraper ring 4 and a third oil ring 5, the outer circular surface of the first gas ring 3 is barrel-shaped, the ring height is 2.5-2.8mm, the closed gap of the first gas ring 3 is 0.25-0.38mm, and the inner circular chamfer of the first gas ring 3 is C0.5; the second oil scraper ring 4 is in a conical surface exchange structure and is in an anti-twisting structure, the closed gap of the second oil scraper ring 4 is 0.6-0.8mm, the elasticity of the third oil scraper ring 5 is 31.2-41.2N, the closed gap is 0.25-0.5mm, and the ring height is 3.0-3.2 mm. Therefore, the piston ring assembly is adjusted to reduce the elasticity of the piston ring, and the friction work is reduced, so that the sealing performance of the piston ring is improved, the air blow-by amount is reduced, and the performance of the whole machine is well improved. In addition, the first gas ring 3 may be made of a steel material. Such an arrangement can promote the following of the first gas ring 3.
Further, the surface coating of the first gas ring 3 is a chromium and diamond composite coating. Such an arrangement may increase its hardness and wear resistance.
Further, the first gas ring 3 is of a positive torsion structure. The running-in performance of the first air ring 3 is improved, the side sealing performance is improved, and an air leakage passage is reduced.
Further, the elasticity of the first air ring 3 is 14.3-22.3N. The arrangement can reduce the deformation elasticity and reduce the friction between the first gas ring 3 and the cylinder wall.
Further, the outer circular surface of the second oil scraper ring 4 is a chromium coating with surface phosphating treatment. Thus, the performance of the running-in and tensile cylinder can be improved, and the effects of corrosion prevention and rust prevention are achieved.
Further, the third oil ring 5 may be made of cast iron material, and the surface coating is a chromium-ceramic composite coating. Such an arrangement can increase the hardness and wear resistance of the third oil ring 5.
The utility model discloses an adjustment of scheme to piston ring structure, the contrast is as shown in the following table around the concrete effect:
| categories | Blow-by amount | Frictional force |
| Before adopting the scheme | 53.1L/min | 3.0Kpa |
| After the scheme is adopted | 49.8L/min | 2.5Kpa |
| Comparison results | The reduction is 6 percent | The reduction is 16.7 percent |
The diameter of the piston ring assembly is generally 100-110mm, the blow-by passage of the piston ring assembly is reduced through adjusting the piston ring structure, the sealing performance is improved, the friction work is improved through reducing the elastic force, and meanwhile, the wear resistance of the piston ring assembly is improved after the elastic force is reduced, so that the reliability of the whole internal combustion engine is improved.
Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A4L diesel engine low blow-by amount low friction diesel engine piston ring assembly, including first gas ring, second oil scraper ring, third oil ring, characterized by that, the excircle of said first gas ring is inclined to the barrel-shaped, the ring height is 2.5-2.8mm, the said first gas ring close gap is 0.25-0.38mm, the said first gas ring inner round chamfer is C0.5; the second oil scraper ring is in a conical surface exchange structure and is in an anti-twisting structure, the closed gap of the second oil scraper ring is 0.6-0.8mm, the elasticity of the third oil scraper ring is 31.2-41.2N, the closed gap is 0.25-0.5mm, and the ring height is 3.0-3.2 mm.
2. The low blow-by amount and low friction diesel piston ring assembly of the 4L diesel engine as claimed in claim 1, wherein said first gas ring is of a positive torsion structure.
3. The low blow-by amount and low friction diesel piston ring assembly of the 4L diesel engine as claimed in claim 2, wherein said first gas ring elastic force is 14.3-22.3N.
4. The piston ring assembly of the 4L diesel engine with low blow-by amount and low friction as recited in claim 3, characterized in that the first gas ring surface coating is a chromium and diamond composite coating.
5. The piston ring assembly of the 4L diesel engine with low blow-by amount and low friction as recited in claim 1, characterized in that the outer circular surface of the second oil scraper ring is a chromium coating with surface phosphating treatment.
6. The piston ring assembly of the 4L diesel engine with low blow-by amount and low friction as recited in claim 1, characterized in that the surface coating of the third oil ring is a chromium-ceramic composite coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020237711.1U CN212774531U (en) | 2020-03-02 | 2020-03-02 | Low-blow-by-gas low-friction diesel engine piston ring assembly of 4L diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020237711.1U CN212774531U (en) | 2020-03-02 | 2020-03-02 | Low-blow-by-gas low-friction diesel engine piston ring assembly of 4L diesel engine |
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| Publication Number | Publication Date |
|---|---|
| CN212774531U true CN212774531U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020237711.1U Active CN212774531U (en) | 2020-03-02 | 2020-03-02 | Low-blow-by-gas low-friction diesel engine piston ring assembly of 4L diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212774531U (en) |
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2020
- 2020-03-02 CN CN202020237711.1U patent/CN212774531U/en active Active
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