CN216950600U - Cylinder gasket with dotted local support design - Google Patents
Cylinder gasket with dotted local support design Download PDFInfo
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- CN216950600U CN216950600U CN202123259687.5U CN202123259687U CN216950600U CN 216950600 U CN216950600 U CN 216950600U CN 202123259687 U CN202123259687 U CN 202123259687U CN 216950600 U CN216950600 U CN 216950600U
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- cylinder gasket
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- 239000011324 bead Substances 0.000 claims description 8
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- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229920001973 fluoroelastomer Polymers 0.000 claims description 3
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
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- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a cylinder gasket with a dotted local support design, which comprises an upper layer plate (1), a middle support layer plate (2) and a lower layer plate (3) which are riveted and fixed into a whole; the cylinder gasket is at least provided with a plurality of oil return holes (6), a plurality of bolt holes (8) and a plurality of cylinder holes, and a three-joint surface area (7) is arranged at a position far away from the bolt holes (8); the lower laminate (3) is further provided with a point-shaped supporting structure (31) for relieving fatigue of the first half rib sealing rib (5), and the point-shaped supporting structure (31) is located on the side of the first half rib sealing rib (5). Compared with the prior art, the utility model has the advantages of having larger effect on inhibiting the initial deformation of the cylinder body and the cylinder cover, reducing the high sealing pressure at the position with larger deformation of the cylinder body and the cylinder cover, protecting the sealing rib in the area, reducing the sealing failure risk and the like.
Description
Technical Field
The utility model relates to the field of automobile engine parts, in particular to a cylinder gasket with a dotted local support design.
Background
The cylinder gasket of the gasoline engine is positioned between the cylinder body and the cylinder cover, provides clamping force by a plurality of high-strength cylinder cover bolts, and seals each combustion chamber, the high-pressure oil duct, the low-pressure oil duct, the cooling liquid channel, the chain wheel box and the like of the engine. The cylinder gasket is operated under high temperature and pressure and pulse load conditions, and the physical and chemical properties of the sealed fluids (gas, lubricating oil and cooling liquid) are greatly different. The environment is extremely harsh. Along with the supercharging of the engine and the promotion of miniaturization, the cylinder pressure of the engine, the pretightening force of a cylinder cover bolt and the temperature of a cylinder cover are correspondingly improved, and the requirements on the sealing of a cylinder gasket are higher.
The cylinder gasket generally adopts an integral sheet type structure, holes are formed in corresponding positions such as a cylinder hole, an oil hole, a water hole and a bolt hole, sealing structures such as a full rib and a half rib are pressed out at positions needing to be sealed by a stamping die, and corresponding positions are sealed by resilience stress under the pressure deformation of a sealing rib. And rubber is coated on two sides of the cylinder gasket to realize micro-sealing. With the improvement of the performance of the engine and the development of high power, high rotating speed, low emission and supercharging technology at present, the problem of liquid seepage failure often occurs in the development process of the cylinder gasket.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a cylinder gasket with a punctiform local support design, which has a great effect on inhibiting the initial deformation of a cylinder body and a cylinder cover, can reduce the high sealing pressure at the position with great deformation of the cylinder body and the cylinder cover, protects the sealing rib in the area and reduces the sealing failure risk.
The purpose of the utility model can be realized by the following technical scheme:
a cylinder gasket with a dotted local support design comprises an upper layer plate, a middle support layer plate and a lower layer plate which are riveted and fixed into a whole;
the cylinder gasket is at least provided with a plurality of oil return holes, a plurality of bolt holes and a plurality of cylinder holes, and a position far away from the bolt holes is provided with a three-combined surface area;
arc-shaped full-rib sealing ribs are symmetrically arranged on the upper plate and the lower plate at the periphery of the cylinder hole relative to the middle support plate, and broken-line-shaped first half-rib sealing ribs are symmetrically arranged on the edges of the three combined surface areas of the upper plate and the lower plate at the oil return hole and the bolt hole;
the lower laminate is also provided with a point-shaped supporting structure for relieving fatigue of the first half rib sealing rib, and the point-shaped supporting structure is positioned on the side of the first half rib sealing rib.
A point-shaped supporting structure is arranged beside a first half rib sealing rib at a position with larger deformation of the cylinder body and the cylinder cover, such as an oil return hole, a three-joint surface area, or an air inlet side front end, an air outlet side front end and other areas, and is used for inhibiting the initial deformation of the cylinder body and the cylinder cover, reducing the high sealing pressure at the position with larger deformation of the cylinder body and the cylinder cover, and protecting the first half rib sealing rib in the area. The meaning of three binding face district is the position that car cylinder body, cylinder cap and shroud combine, because far away from the bolt hole, also very fragile needs additional strengthening.
Further, the difference between the maximum height and the minimum height of the first half-bead sealing bead is lower than the distance between the upper or lower laminate and the intermediate support laminate.
Furthermore, the point-shaped supporting structure comprises a plurality of convex strips which are arranged in parallel and have different lengths.
Furthermore, each raised line is consistent in height and smaller than the distance between the lower layer plate and the middle support layer plate.
Further, the difference between the maximum height and the minimum height of the full-rib sealing rib is lower than the distance between the upper layer plate or the lower layer plate and the middle support layer plate.
Furthermore, a blocking sheet is arranged below the full-rib sealing rib on the middle supporting laminated plate. The good fuel gas sealing of the position of the cylinder hole is ensured; wherein, the blocking piece can better ensure the stress of the cylinder hole part and the sealing effect of the cylinder hole,
furthermore, the cylinder mat is at least provided with a plurality of water holes, and the edges of the upper plate and the lower plate, which are positioned in the water holes and the bolt holes, are symmetrically provided with second half rib sealing ribs in a broken line shape. The function of the half-rib sealing rib is mainly to seal the cooling water and engine oil away from the cylinder hole area.
Furthermore, the cylinder cushion is also provided with an ear-shaped positioning pin hole, and an orifice of the positioning pin hole is provided with an inward concave edge, so that the positioning pin hole is in interference fit with the positioning pin. The upper plate of the cylinder gasket can be clamped conveniently, and normal installation of the cylinder cover is guaranteed.
Furthermore, the upper plate and the lower plate are made of 301 stainless steel, and the inner sides of the upper plate and the lower plate are coated with fluororubber. And micro sealing of the cylinder gasket is realized.
Furthermore, the middle supporting layer plate is made of common steel, the surface of the middle supporting layer plate is coated with rubber, the sealing effect among three layers of the cylinder gasket is guaranteed, and the blocking sheet is made of 304 stainless steel and is welded with the middle supporting layer plate.
Compared with the prior art, the utility model has the following advantages:
(1) in the effective range of the arrangement space, the cylinder gasket is additionally provided with a point-shaped supporting structure, so that the material loss is not increased;
(2) the punctiform local support structure is simple, adopts the punch forming technology in the process, and has stable size and shape;
(3) the punctiform local support is high-pressure resistant, not easy to deform and rigid;
(4) the utility model has low cost and fast production rhythm when being put into the point-shaped supporting structure, and is beneficial to mass production.
Drawings
FIG. 1 is a diagram of the arrangement of sealing ribs and the arrangement of punctiform local supports in the embodiment;
FIG. 2 is a schematic view of a cylinder head gasket according to an embodiment;
FIG. 3 is a cross-sectional view of an embodiment of a registration pin hole ear design;
FIG. 4 is an enlarged cross-sectional view of the dotted local support of the embodiment;
FIG. 5 is a schematic diagram of the embodiment of the spot-shaped partial support;
the reference numbers in the figures indicate: the structure comprises an upper plate 1, a middle support plate 2, a blocking sheet 21, a lower plate 3, a point-shaped support structure 31, a convex strip 311, a full rib sealing rib 4, a first half rib sealing rib 5, an oil return hole 6, a three-combined surface area 7, a bolt hole 8, an ear-shaped positioning pin hole 9 and an inward concave edge 91.
Detailed Description
The utility model is described in detail below with reference to the figures and the specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
Examples
A cylinder gasket with a dotted local support design is disclosed, as shown in figures 1-5, and comprises an upper plate 1, a middle support plate 2 and a lower plate 3 which are riveted and fixed into a whole; the cylinder gasket is at least provided with a plurality of oil return holes 6, a plurality of bolt holes 8 and a plurality of cylinder holes, and a three-joint surface area 7 is arranged at a position far away from the bolt holes 8.
The upper plate 1 and the lower plate 3 are made of 301 stainless steel, and the inner sides of the upper plate 1 and the lower plate 3 are coated with fluororubber. And micro sealing of the cylinder gasket is realized. The middle supporting layer plate 2 is made of common steel, the surface of the middle supporting layer plate 2 is coated with rubber, the sealing effect between three layers of the cylinder gasket is guaranteed, and the blocking sheet 21 is made of 304 stainless steel and is welded with the middle supporting layer plate 2.
Arc-shaped full-rib sealing ribs 4 are symmetrically arranged on the upper plate 1 and the lower plate 3 at the periphery of the cylinder hole relative to the middle support plate 2, and fold-line-shaped first half-rib sealing ribs 5 are symmetrically arranged on the edges of the upper plate 1 and the lower plate 3 at the oil return hole 6, the bolt hole 8 and the three-joint surface area 7; the lower plate 3 is further provided with a point-shaped supporting structure 31 for relieving fatigue of the first half-rib sealing rib 5, and the point-shaped supporting structure 31 is positioned on the side of the first half-rib sealing rib 5. The punctiform supporting structure 31 is arranged beside the first half rib sealing rib 5 at the position with larger deformation of the cylinder body and the cylinder cover, such as the oil return hole 6, the three-joint surface area 7, or the area of the front end of the air inlet side and the front end of the air outlet side, and the like, and is used for inhibiting the initial deformation of the cylinder body and the cylinder cover, reducing the high sealing pressure at the position with larger deformation of the cylinder body and the cylinder cover, and protecting the first half rib sealing rib 5 in the area. The meaning of three joint surface areas 7 is the joint part of the automobile cylinder body, the cylinder cover and the cover cap, and the three joint surface areas are very fragile and need to be reinforced due to the fact that the three joint surface areas are far away from the bolt holes 8. The difference between the maximum height and the minimum height of the first half bead sealing bead 5 is lower than the distance between the upper or lower deck plate 1 or 3 and the intermediate support deck plate 2.
As shown in fig. 4, the dot-shaped support structure 31 includes a plurality of convex strips 311 arranged in parallel. The raised strips 311 are uniform in height but different in length and are smaller than the distance between the lower plate 3 and the intermediate support plate 2. The difference between the maximum height and the minimum height of the full-rib sealing rib 4 is lower than the distance between the upper layer plate 1 or the lower layer plate 3 and the middle support layer plate 2.
And a blocking sheet 21 is arranged below the full-rib sealing rib 4 on the middle supporting laminated plate 2. The good fuel gas sealing of the position of the cylinder hole is ensured; wherein, the blocking sheet 21 can better ensure the stress of the cylinder hole part and the sealing effect of the cylinder hole,
a plurality of water holes are at least formed in the cylinder gasket, and the edge of the upper plate 1 and the edge of the lower plate 3, which are positioned in the water holes and the bolt holes 8, are symmetrically provided with a second half rib sealing rib in a broken line shape. The function of the half-rib sealing rib is mainly to seal cooling water and engine oil away from the cylinder hole area.
As shown in fig. 3, the cylinder pad is further provided with an ear-shaped positioning pin hole 9, and an orifice of the positioning pin hole 9 is provided with an inward concave edge 91, so that the positioning pin hole 9 and the positioning pin are in interference fit. The clamping of the upper plate 1 of the cylinder liner is facilitated, and the normal installation of the cylinder cover is guaranteed.
In the process of running of the engine, the cylinder head bolt and each cylinder are subjected to explosive pressure, and in order to ensure the sealing performance, the cylinder gasket sealing rib continuously performs compression rebound work. After the punctiform supporting structure 31 is designed near the first half rib sealing rib 5 of the oil return channel, the punctiform supporting structure 31 has high strength and is rigid support, so that the compression amount of the first half rib sealing rib 5 can be effectively controlled, the fatigue performance of the first half rib sealing rib 5 is improved on the basis of ensuring the sealing stress, meanwhile, the deformation of a cylinder body and a cylinder cover can be improved, the abrasion of the first half rib sealing rib 5, rubber and the cylinder body and the cylinder cover is reduced, and the sealing failure risk is effectively reduced. The arrangement and the height of the point-shaped supporting structures 31 can be obtained by referring to the marks of the cylinder body and cylinder cover joint surfaces of the durable rear cylinder body of the engine and the CAE analysis result.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. The cylinder gasket with the dotted local support design is characterized by comprising an upper layer plate (1), a middle support layer plate (2) and a lower layer plate (3) which are riveted and fixed into a whole;
the cylinder gasket is at least provided with a plurality of oil return holes (6), a plurality of bolt holes (8) and a plurality of cylinder holes, and a three-joint surface area (7) is arranged at a position far away from the bolt holes (8);
arc-shaped full-rib sealing ribs (4) are symmetrically arranged at the periphery of the cylinder hole of the upper plate (1) and the lower plate (3), and fold-line-shaped first half-rib sealing ribs (5) are symmetrically arranged at the edges of the oil return hole (6), the bolt hole (8) and the three-combined surface area (7) of the upper plate (1) and the lower plate (3);
the lower laminate (3) is further provided with a punctiform supporting structure (31) used for relieving fatigue of the first half rib sealing rib (5), and the punctiform supporting structure (31) is positioned on the side of the first half rib sealing rib (5).
2. Cylinder gasket with punctiform local support design according to claim 1, characterized in that the difference between the maximum height and the minimum height of the first bead seal bead (5) is lower than the distance between the upper (1) or lower (3) and intermediate support layer (2).
3. Cylinder gasket with point-like local support design according to claim 1, characterized in that the point-like support structure (31) comprises a plurality of parallel ribs (311).
4. A head gasket with a punctiform local support design according to claim 3, characterized in that the individual ribs (311) are of uniform height and are smaller than the distance between the lower plate (3) and the intermediate support plate (2).
5. Cylinder gasket with punctiform local support design according to claim 1, characterized in that the difference between the maximum height and the minimum height of the full-bead sealing bead (4) is lower than the distance between the upper (1) or lower (3) sheet and the intermediate support sheet (2).
6. The cylinder gasket with punctiform local support design according to claim 1, characterized in that the middle support layer plate (2) is further provided with a blocking sheet (21) below the full-rib sealing rib (4).
7. The cylinder gasket with the punctiform local support design according to claim 1, characterized in that at least a plurality of water holes are opened on the cylinder gasket, and the edges of the upper plate (1) and the lower plate (3) at the water holes and the bolt holes (8) are symmetrically provided with second half rib sealing ribs in a broken line shape.
8. The cylinder gasket with the point-like local support design according to claim 1, wherein said cylinder gasket is further provided with an ear-shaped dowel hole (9), and an opening of the dowel hole (9) is provided with an inward concave edge (91), so that the dowel hole (9) and the dowel pin are in interference fit.
9. The cylinder gasket with a punctiform local support design according to claim 1, characterized in that the upper plate (1) and the lower plate (3) are made of 301 stainless steel, and the inner sides of the upper plate (1) and the lower plate (3) are coated with fluororubber.
10. The cylinder gasket with a dotted local support design according to claim 6, characterized in that the material of the middle support layer plate (2) is ordinary steel, the surface of the middle support layer plate (2) is coated with rubber, and the material of the barrier sheet (21) is 304 stainless steel and is welded with the middle support layer plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123259687.5U CN216950600U (en) | 2021-12-23 | 2021-12-23 | Cylinder gasket with dotted local support design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123259687.5U CN216950600U (en) | 2021-12-23 | 2021-12-23 | Cylinder gasket with dotted local support design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216950600U true CN216950600U (en) | 2022-07-12 |
Family
ID=82309775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123259687.5U Active CN216950600U (en) | 2021-12-23 | 2021-12-23 | Cylinder gasket with dotted local support design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216950600U (en) |
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2021
- 2021-12-23 CN CN202123259687.5U patent/CN216950600U/en active Active
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