CN214533254U - Cylinder cover - Google Patents
Cylinder cover Download PDFInfo
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- CN214533254U CN214533254U CN202120103374.1U CN202120103374U CN214533254U CN 214533254 U CN214533254 U CN 214533254U CN 202120103374 U CN202120103374 U CN 202120103374U CN 214533254 U CN214533254 U CN 214533254U
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- reinforcing rib
- cylinder cover
- water jacket
- cylinder head
- cylinder
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Abstract
The application relates to the technical field of engines, and discloses a cylinder cover, include: a cylinder head body; the fuel injector bushing bottom hole penetrates through the cylinder cover body and is used for mounting a fuel injector; the cylinder cover upper water jacket is positioned in the cylinder cover body and arranged around the bottom hole of the oil sprayer bushing; the cylinder cover lower water jacket is positioned in the cylinder cover body and arranged around the bottom hole of the oil sprayer bushing, and the cylinder cover lower water jacket is positioned below the cylinder cover upper water jacket and is communicated with the cylinder cover upper water jacket; the exhaust passage is located between the water jacket on the cylinder cover and the water jacket under the cylinder cover, a reinforcing rib structure in a horn mouth shape is arranged in the exhaust passage, the reinforcing rib structure comprises a first reinforcing rib, a second reinforcing rib and a connecting section which are sequentially arranged in the direction away from the inner side wall, the connecting section is connected to two ends of the second reinforcing rib, and the angle of the first reinforcing rib towards the inner side wall is larger than the angle of the second reinforcing rib towards the inner side wall. Above-mentioned cylinder cap can effectively solve current cylinder cap structure and can't in time release exhaust passage thermal stress and cause the problem that fatigue crack produced.
Description
Technical Field
The application relates to the technical field of engines, in particular to a cylinder cover.
Background
On a large-cylinder-diameter high-heat-load engine, along with the rise of explosion pressure and the rise of heat load, the temperature in an exhaust passage rises sharply, and heat stress is easily generated; meanwhile, the reliability of the structure of the cylinder cover is reduced along with the improvement of the explosion pressure. Therefore, how to avoid the thermal cracking of the exhaust passage structure when releasing thermal stress at high temperature is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cylinder cap can effectively solve current cylinder cap structure and can't in time release exhaust passage internal thermal stress and cause the problem that fatigue crack produced.
In order to achieve the above object, the utility model provides a cylinder cap, include:
a cylinder head body;
the fuel injector bushing bottom hole penetrates through the cylinder cover body and is used for mounting a fuel injector;
the cylinder cover upper water jacket is positioned in the cylinder cover body and arranged around the bottom hole of the oil sprayer bushing;
the cylinder cover lower water jacket is positioned in the cylinder cover body and arranged around the bottom hole of the oil sprayer bushing, and the cylinder cover lower water jacket is positioned below the cylinder cover upper water jacket and is communicated with the cylinder cover upper water jacket;
the exhaust passage is positioned between the cylinder cover upper water jacket and the cylinder cover lower water jacket, a reinforcing rib structure protruding out of the inner side wall of the cylinder cover body and in a horn mouth shape is arranged in the exhaust passage, the reinforcing rib structure comprises a first reinforcing rib, a second reinforcing rib and a connecting section which are sequentially arranged in the direction away from the inner side wall, wherein the two ends of the connecting section are respectively connected with the two ends of the second reinforcing rib, and the angle of the first reinforcing rib towards the inner side wall is larger than that of the second reinforcing rib towards the inner side wall.
Above-mentioned cylinder cap has set up the strengthening rib structure that has the horn mouth shape in the exhaust passage, and this strengthening rib structure's opening is towards the inside wall of exhaust passage, and includes first strengthening rib, second strengthening rib and linkage segment, and the angle of first strengthening rib is greater than the angle of second strengthening rib. The structure of the reinforcing rib can enhance the rigidity adjustment and stress release performance of the exhaust passage under thermal stress, and the angle of the first reinforcing rib and the second reinforcing rib and the length of the connecting section in the height direction of the cylinder cover can be defined according to the thermal load, so that the exhaust passage can adapt to engines of different models.
Therefore, the utility model provides a cylinder cap through set up the strengthening rib structure who is the horn mouth shape in the exhaust passage, has strengthened the rigidity adjustment of exhaust passage under thermal stress and stress release's performance to effectively solved current cylinder cap structure can't in time release exhaust passage thermal stress and cause the problem that fatigue crack produced.
Preferably, the angle of the first reinforcing bead towards the inner side wall is 60-90 °.
Preferably, the angle of the second reinforcing rib towards the inner side wall is 20-45 °.
Preferably, the size of one end of the second reinforcing rib connected to the connecting section in the height direction of the cylinder head body is greater than 10 mm.
Preferably, the width of the rib structure is 10-14 mm.
Preferably, an upper water jacket reinforcing rib is arranged in the cylinder cover upper water jacket, and the extending direction of one side, deviating from the cylinder cover upper water jacket, of the second reinforcing rib is consistent with the extending direction of one side, close to the cylinder cover lower water jacket, of the upper water jacket reinforcing rib.
Preferably, the cylinder head water jacket comprises an exhaust passage left branch, an exhaust passage right branch, an intake passage left branch and an intake passage right branch, wherein the exhaust passage left branch, the exhaust passage right branch, the intake passage left branch and the intake passage right branch are positioned on an exhaust side;
the cylinder cover lower water jacket further comprises a vertical reinforcing rib in a nose discharging and arranging area between the exhaust passage left branch and the exhaust passage right branch, a first vertical reinforcing rib in a nose feeding and arranging area between the exhaust passage right branch and the intake passage left branch, a vertical reinforcing rib in a nose feeding and arranging area between the intake passage left branch and the intake passage right branch, and a second vertical reinforcing rib in a nose feeding and arranging area between the exhaust passage left branch and the intake passage right branch.
Preferably, a first water flow width is formed between the vertical reinforcing rib in the exhaust nose bridge area and the left branch of the exhaust passage, a second water flow width is formed between the vertical reinforcing rib in the exhaust nose bridge area and the right branch of the exhaust passage, and the first water flow width is equal to the second water flow width.
Preferably, the sum of the width of the first flow width and the width of the row of nasal bridge region vertical stiffeners and the width of the second flow width is greater than 23 mm.
Preferably, a third water flow width is formed between the first inlet and outlet nose bridge area vertical reinforcing rib and the exhaust passage right branch, a fourth water flow width is formed between the first inlet and outlet nose bridge area vertical reinforcing rib and the air inlet passage left branch, and the third water flow width is greater than the fourth water flow width; and/or the presence of a gas in the gas,
and a fifth water flow width is formed between the second inlet and outlet nose bridge area vertical reinforcing rib and the exhaust passage left branch, a sixth water flow width is formed between the second inlet and outlet nose bridge area vertical reinforcing rib and the air inlet passage right branch, and the fifth water flow width is larger than the sixth water flow width.
Drawings
Fig. 1 is a schematic view of an overall structure section structure of the cylinder cover of the present invention;
FIG. 2 is a schematic structural view of a reinforcement rib structure of the present invention;
FIG. 3 is a schematic structural view of an exhaust passage according to the present invention;
FIG. 4 is a schematic structural view of the lower water jacket of the middle cylinder cover of the present invention;
FIG. 5 is a schematic structural view of the middle row nose bridge area of the present invention;
fig. 6 is another schematic structural view of the middle row nose bridge area of the present invention.
In the figure:
1-a cylinder cover body; 2-oil sprayer bushing bottom hole; 3-water jacket on the cylinder cover; 31-mounting water jacket reinforcing ribs; 4-cylinder cover lower water jacket; 41-left branch of exhaust passage; 42-exhaust duct right branch; 43-right branch of inlet duct; 44-left branch of inlet; 45-row of vertical reinforcing ribs in the nose bridge area; 46-a first row of nose bridge region vertical stiffeners; 47-enter the vertical stiffener in the nose bridge zone; 48-second row of nose bridge area vertical reinforcing ribs; 5, an exhaust passage; 6-reinforcing rib structure; 61-a first stiffener; 62-a second reinforcing rib; 63-connecting segments.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1 and fig. 2, the utility model provides a cylinder cover, including:
a cylinder head body 1;
the fuel injector bushing bottom hole 2 penetrates through the cylinder cover body 1 and is used for mounting a fuel injector;
the cylinder cover upper water jacket 3 is positioned in the cylinder cover body 1 and arranged around the bottom hole 2 of the oil sprayer bushing;
the cylinder cover lower water jacket 4 is positioned in the cylinder cover body 1 and arranged around the bottom hole 2 of the oil sprayer bushing, and the cylinder cover lower water jacket 4 is positioned below the cylinder cover upper water jacket 3 and communicated with the cylinder cover upper water jacket 3;
the exhaust passage 5 is located between the cylinder cover upper water jacket 3 and the cylinder cover lower water jacket 4, the exhaust passage 5 is internally provided with a reinforcing rib structure 6 protruding out of the inner side wall of the cylinder cover body 1 and in a horn-shaped shape, the reinforcing rib structure 6 comprises a first reinforcing rib 61, a second reinforcing rib 62 and a connecting section 63 which are sequentially arranged in the direction away from the inner side wall, wherein the two ends of the connecting section 63 are respectively connected to the two ends of the second reinforcing rib 62, and the angle of the first reinforcing rib 61 towards the inner side wall is larger than the angle of the second reinforcing rib 62 towards the inner side wall.
In the cylinder head, the reinforcing rib structure 6 with a horn mouth shape is arranged in the exhaust passage 5, the opening of the reinforcing rib structure 6 faces the inner side wall of the exhaust passage 5, the reinforcing rib structure comprises a first reinforcing rib 61, a second reinforcing rib 62 and a connecting section 63, and the angle of the first reinforcing rib 61 is larger than that of the second reinforcing rib 62. The structure of the reinforcing ribs can enhance the rigidity adjustment and stress relief performance of the exhaust passage 5 under thermal stress, and the angle of the first reinforcing ribs 61 and the second reinforcing ribs 62 and the length of the connecting section 63 in the height direction of the cylinder head can be defined according to the thermal load, so that the exhaust passage can adapt to engines of different models.
Therefore, the utility model provides a cylinder cap through set up the strengthening rib structure 6 that is the horn mouth shape in exhaust passage 5, has strengthened exhaust passage 5 rigidity regulation and stress release's under thermal stress performance to effectively solved current cylinder cap structure can't in time release exhaust passage 5 thermal stress and cause the problem that fatigue crack produced.
In some embodiments, the angle of the first rib 61 facing the inner sidewall is 60 to 90 °, and correspondingly, the angle of the second rib 62 facing the inner sidewall is 20 to 45 °, which can satisfy that the angle of the first rib 61 is greater than that of the second rib 62, and the angles of the first rib 61 and the second rib 62 can be adjusted according to actual requirements to adapt to engines of different models.
On this basis, the dimension of the end of the second reinforcing bead 62 connected to the connecting section 63 in the height direction of the cylinder head is larger than 10mm, which facilitates sufficient release of high thermal load stress.
Further, as shown in FIG. 3, the width b of the connecting section 63 is 10 to 14 mm.
Further, the cylinder head upper water jacket 3 in the embodiment of the present application is provided with the upper water jacket reinforcing rib 31, and the extending direction of the side of the second reinforcing rib 62 departing from the cylinder head upper water jacket 3 in the present application is consistent with the extending direction of the side of the upper water jacket reinforcing rib 31 close to the cylinder head lower water jacket 4, that is, as shown in fig. 2, the reinforcing rib structure 6 and the upper water jacket reinforcing rib 31 form a straight penetrating reinforcing rib, so that the rigidity of the exhaust side can be reinforced, and the generation of fatigue cracks can be prevented better.
In the prior art, the lower water jacket mostly adopts a drilling cold zone or a direct casting mode, the drilling cooling can improve the integral rigidity of the bottom plate and the cylinder cover, but the drilling can lead to the uneven temperature distribution around the seat ring and easily causes the large local abrasion loss of the seat ring, and the direct casting lower water jacket often leads to the weak rigidity of the middle nose bridge position and causes the large integral deformation of the cylinder cover and easily causes fatigue cracks.
In view of this, in some embodiments, as shown in fig. 4 to 6, the cylinder head lower water jacket 4 in the embodiment of the present application includes an exhaust port left branch 41 and an exhaust port right branch 42 on the exhaust side and an intake port left branch 44 and an intake port right branch 43 on the intake side, wherein the exhaust port left branch 41, the exhaust port right branch 42, the intake port left branch 44, and the intake port right branch 43 are distributed in an array; in addition, the cylinder head lower water jacket 4 further includes a bank nose bridge region vertical reinforcing rib 45 located between the exhaust port left branch 41 and the exhaust port right branch 42, a first intake and exhaust nose bridge region vertical reinforcing rib 46 located between the exhaust port right branch 42 and the intake port left branch 44, an intake nose bridge region vertical reinforcing rib 47 located between the intake port left branch 44 and the intake port right branch 43, and a second intake and exhaust nose bridge region vertical reinforcing rib 48 located between the exhaust port left branch 41 and the intake port right branch 43. Above-mentioned structure, owing to all have the nose bridge district between exhaust passage left branch 41 and exhaust passage right branch 42, exhaust passage right branch 42 and intake duct left branch 44, intake duct left branch 44 and intake duct right branch 43 and exhaust passage left branch 41 and intake duct right branch 43, through increase perpendicular strengthening rib in four nose bridge districts, can increase rigidity, can realize accelerating the refrigerated effect in nose bridge district again.
Further, as shown in fig. 5, a first water flow width S1 is provided between the vertical reinforcing rib 45 in the row nose bridge area and the left branch 41 of the exhaust passage, and a second water flow width S2 is provided between the vertical reinforcing rib and the right branch 42 of the exhaust passage, and the first water flow width is equal to the second water flow width.
On this basis, the sum of the widths of the first water flow width S1, the width W of the vertical reinforcing ribs 45 in the nose bridge area of the row and the width of the second water flow width S2 is larger than 23mm, so that the coordination of the water flow speed and the supporting rigidity can be conveniently realized, the rigidity of the nose bridge area is improved, and the cylinder cover is not easy to deform integrally.
Further, in the embodiment of the present invention, a third water flow width exists between the first inlet/outlet nose bridge region vertical stiffener 46 and the right branch 42 of the exhaust passage 5, and a fourth water flow width exists between the inlet left branch 44, and the third water flow width is greater than the fourth water flow width; and/or a fifth water flow width is formed between the second inlet and outlet nose bridge area vertical reinforcing rib 48 and the left branch 41 of the exhaust passage 5, and a sixth water flow width is formed between the second inlet and outlet nose bridge area vertical reinforcing rib and the right branch 43 of the air inlet passage, and the fifth water flow width is larger than the sixth water flow width. The effect of preferentially cooling the exhaust side can be achieved by setting the water flow velocity at the intake side to be smaller than the water flow velocity at the exhaust side in the intake and exhaust nose bridge region.
Further, as an implementation manner, the vertical reinforcing ribs and the cylinder head upper water jacket 3 can also be set in a cross reinforcing rib form, so that when the reinforcing rib structure 6 and the upper water jacket reinforcing rib 31 form a straight structure, the bottom-to-top support along the vertical direction of the explosive force can be conveniently realized.
It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A cylinder head, comprising:
a cylinder head body;
the fuel injector bushing bottom hole penetrates through the cylinder cover body and is used for mounting a fuel injector;
the cylinder cover upper water jacket is positioned in the cylinder cover body and arranged around the bottom hole of the oil sprayer bushing;
the cylinder cover lower water jacket is positioned in the cylinder cover body and arranged around the bottom hole of the oil sprayer bushing, and the cylinder cover lower water jacket is positioned below the cylinder cover upper water jacket and is communicated with the cylinder cover upper water jacket;
the exhaust passage is positioned between the cylinder cover upper water jacket and the cylinder cover lower water jacket, a reinforcing rib structure protruding out of the inner side wall of the cylinder cover body and in a horn mouth shape is arranged in the exhaust passage, the reinforcing rib structure comprises a first reinforcing rib, a second reinforcing rib and a connecting section which are sequentially arranged in the direction away from the inner side wall, wherein the two ends of the connecting section are respectively connected with the two ends of the second reinforcing rib, and the angle of the first reinforcing rib towards the inner side wall is larger than that of the second reinforcing rib towards the inner side wall.
2. The cylinder head of claim 1, wherein the angle of the first bead is 60-90 ° toward the inner side wall.
3. The cylinder head of claim 2, wherein the angle of the second bead is 20-45 ° toward the inner side wall.
4. The cylinder head according to claim 3, wherein the second reinforcing bead is connected to one end of the connecting section with a dimension in a height direction of the cylinder head body larger than 10 mm.
5. A cylinder head according to claim 3, characterized in that the width of the bead structure is 10-14 mm.
6. The cylinder head according to claim 1, wherein an upper water jacket reinforcing rib is arranged in the cylinder head upper water jacket, and the extending direction of the side, away from the cylinder head upper water jacket, of the second reinforcing rib is consistent with the extending direction of the side, close to the cylinder head lower water jacket, of the upper water jacket reinforcing rib.
7. The cylinder head of claim 1, wherein the under-head water jacket includes an exhaust port left branch and an exhaust port right branch on an exhaust side and an intake port left branch and an intake port right branch on an intake side, the exhaust port left branch, the exhaust port right branch, the intake port left branch, and the intake port right branch being arranged in an array;
the cylinder cover lower water jacket further comprises a vertical reinforcing rib in a nose discharging and arranging area between the exhaust passage left branch and the exhaust passage right branch, a first vertical reinforcing rib in a nose feeding and arranging area between the exhaust passage right branch and the intake passage left branch, a vertical reinforcing rib in a nose feeding and arranging area between the intake passage left branch and the intake passage right branch, and a second vertical reinforcing rib in a nose feeding and arranging area between the exhaust passage left branch and the intake passage right branch.
8. The cylinder head of claim 7 wherein said bank nose bridge vertical stiffener has a first flow width with said bank left leg and a second flow width with said bank right leg, said first flow width being equal to said second flow width.
9. The cylinder head of claim 8, wherein the sum of the first water flow width and the width of the row of nasal bridge region vertical stiffeners and the width of the second water flow width is greater than 23 mm.
10. The cylinder head of claim 7 wherein said first inlet/exhaust nose bridge region vertical stiffener has a third flow width with said exhaust port right branch and a fourth flow width with said intake port left branch, said third flow width being greater than said fourth flow width; and/or the presence of a gas in the gas,
and a fifth water flow width is formed between the second inlet and outlet nose bridge area vertical reinforcing rib and the exhaust passage left branch, a sixth water flow width is formed between the second inlet and outlet nose bridge area vertical reinforcing rib and the air inlet passage right branch, and the fifth water flow width is larger than the sixth water flow width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120103374.1U CN214533254U (en) | 2021-01-14 | 2021-01-14 | Cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120103374.1U CN214533254U (en) | 2021-01-14 | 2021-01-14 | Cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214533254U true CN214533254U (en) | 2021-10-29 |
Family
ID=78302413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120103374.1U Active CN214533254U (en) | 2021-01-14 | 2021-01-14 | Cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214533254U (en) |
-
2021
- 2021-01-14 CN CN202120103374.1U patent/CN214533254U/en active Active
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