CN217652852U - Oil sprayer bushing with cooling structure - Google Patents
Oil sprayer bushing with cooling structure Download PDFInfo
- Publication number
- CN217652852U CN217652852U CN202221172979.7U CN202221172979U CN217652852U CN 217652852 U CN217652852 U CN 217652852U CN 202221172979 U CN202221172979 U CN 202221172979U CN 217652852 U CN217652852 U CN 217652852U
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- oil head
- liner
- bushing
- cooling
- fuel injector
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Abstract
The utility model discloses a take cooling structure's sprayer bush, include: the oil head cooling water cavity is arranged between the upper bushing and the lower bushing, and the lower bushing is provided with a water inlet hole and a water outlet hole which are communicated with the oil head cooling water cavity. The oil head is provided with an oil head cooling water cavity, and in practical application, the water inlet hole and the water outlet hole are respectively communicated with a cooling water channel of the cylinder cover, the cooling water of the cylinder cover is used for cooling the upper liner, so that the oil head is cooled, the temperature in an oil head recombustion chamber is reduced, and the reliability of the oil head is improved.
Description
Technical Field
The utility model relates to a diesel engine technical field, specific theory relates to a take cooling structure's sprayer bush.
Background
Fig. 1 is a schematic view showing an assembly structure of a conventional fuel injector. A traditional fuel injector bush 1 is arranged in a cylinder cover 3 through a sealing ring 2, then the fuel injector is arranged in the fuel injector bush 1, a fuel head 4 of the fuel injector sprays diesel into a combustion chamber of the cylinder cover, and the diesel generates high temperature after compression ignition to drive a diesel engine to operate. The traditional structure of the oil injector bush 1 only has the sealing function in the whole system, and the oil head 4 of the oil injector cannot be cooled.
With the continuous change of the market, the national emission requirements of internal combustion engines are also continuously improved, and in order to adapt to the environment, a dual-fuel or micro-jet ignition gas engine type is derived, so that the national emission requirements are met. Unlike conventional diesel engines, dual fuel or micro jet pilot gas engines, which burn a mixture of diesel and combustible gases in the cylinder, result in much higher temperatures in the cylinder than pure diesel engines, thereby presenting new challenges to the reliability of the parts in contact with the combustion chamber. In particular the oil head 4, which is subjected to high thermal loads.
In order to improve the reliability of the injector head 4 at high temperatures, the improvement can be optimized only from two aspects: (1) The material of the oil head 4 is improved to be more high-temperature resistant, so that although the reliability of parts is met, the cost of the diesel engine is increased, and the competitiveness of the product is reduced; (2) Through certain mode, reduce the temperature of oil head 4 in the combustion chamber to improve oil head 4's reliability, just so need optimize the improvement to sprayer bush 1 among the cylinder cap cooling system who is relevant with oil head 4, through unilateral structural optimization, can play the same effect, both guaranteed the reliability of part, can not increase the cost of diesel engine again, kill two birds with one stone.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: a fuel injector liner with cooling structure is provided to reduce the temperature of the oil head.
In order to solve the technical problem, the technical scheme of the utility model is that:
a fuel injector liner with cooling structure, comprising: the oil head cooling water cavity is arranged between the upper bushing and the lower bushing, and the lower bushing is provided with a water inlet hole and a water outlet hole which are communicated with the oil head cooling water cavity.
Preferably, the oil head cooling water cavity is located below the water inlet hole and the water outlet hole.
Preferably, the water inlet holes are inclined downwards from outside to inside, and the water outlet holes are inclined upwards from inside to outside.
Preferably, the water inlet hole and the water outlet hole are equal in height.
Preferably, the water inlet hole and the water outlet hole are both provided with one.
Preferably, the lower lining is provided with a lug at the water inlet.
Preferably, the bushing and the lug are integrally provided.
Preferably, the upper bushing and the lower bushing are welded.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the oil sprayer bushing with the cooling structure comprises an upper bushing and a lower bushing which are fixedly and hermetically connected, the upper bushing is used for sleeving the outer portion of the oil sprayer, the lower bushing is sleeved on the outer portion of the upper bushing, the lower bushing corresponds to the position of an oil head of the oil sprayer, an oil head cooling water cavity is arranged between the upper bushing and the lower bushing, and the lower bushing is provided with a water inlet hole and a water outlet hole which are communicated with the oil head cooling water cavity. Therefore, the oil head is provided with the oil head cooling water cavity, the water inlet hole and the water outlet hole are communicated with the cooling water channel of the cylinder cover respectively in practical application, the cooling water of the cylinder cover is used for cooling the upper liner, the oil head is cooled, the temperature of the oil head in the combustion chamber is reduced, and the reliability of the oil head is improved.
Drawings
FIG. 1 is a schematic view of a prior art fuel injector assembly;
FIG. 2 is a schematic view of an assembled structure of a fuel injector to which the fuel injector liner with a cooling structure of the present invention is applied;
FIG. 3 is an enlarged view of the portion A of FIG. 2;
in the figure: 1. a fuel injector liner; 2. a seal ring; 3. a cylinder liner; 4. an oil head; 5. an upper bushing; 6. a lower bushing; 7. an oil head cooling water cavity; 8. a water inlet hole; 9. a water outlet hole; 10. a fuel injector; 11. a cylinder head water chamber; 12. a water pore; 13. a cooling water cavity of the oil injector; 14. a lug.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown collectively in fig. 2 and 3, a fuel injector liner with a cooling structure includes: fixed and sealing connection's last bush 5 and lower liner 6, go up bush 5 and be used for the cover to locate the outside of sprayer 10, the outside of last bush 5 is located to lower liner 6 cover, lower liner 6 corresponds the position of the oil head 4 of sprayer 10, it is equipped with oil head cooling water chamber 7 to go up between bush 5 and the lower liner 6, oil head cooling water chamber 7 encircles last bush 5 a week, lower liner 6 is equipped with inlet opening 8 and apopore 9 with oil head cooling water chamber 7 intercommunication, inlet opening 8 and apopore 9 are located the relative both sides in oil head cooling water chamber 7 respectively.
After the bushing is assembled on an engine, the upper bushing 5 is sleeved outside the fuel injector 10, the water inlet hole 8 is communicated with the water hole 12 on the cylinder sleeve 3, the water outlet hole 9 is communicated with a fuel injector cooling water cavity 13 around the upper bushing 5, cooling water enters the oil head cooling water cavity 7 through the water inlet hole 8, and flows into the fuel injector cooling water cavity 13 through the water outlet hole 9 after absorbing heat released by the upper bushing 5. Since the heat of the oil head 4 is transferred to the upper liner 5, the oil head 4 is cooled by cooling the upper liner 5.
The oil head cooling water cavity 7 is located below the water inlet hole 8 and the water outlet hole 9, cooling water entering the oil head cooling water cavity 7 through the water inlet hole 8 flows downwards firstly and then flows upwards to the water outlet hole 9 to be discharged, the flow path is long, and the cooling effect is good.
8 outside-in downward sloping of inlet opening, apopore 9 tilt up from inside to outside, inlet opening 8 plays the water conservancy diversion effect, and the better bottom of flow direction oil head cooling water cavity 7 of guide rivers, the bottom does not have the cooling dead angle, has strengthened the cooling effect to oil head 4, and apopore 9 plays the water conservancy diversion effect, and guide rivers flow to sprayer cooling water cavity 13 fast upwards. Preferably, in this embodiment, the inlet openings 8 and outlet openings 9 are equal in height.
The water inlet hole 8 and the water outlet hole 9 are respectively provided with one, one inlet hole is compared with multiple inlets and multiple outlets, mutual interference between water flows does not exist, dead zones formed by water flow interference do not exist, cooling water at each position of the oil head cooling water cavity 7 flows smoothly, and the cooling effect on the oil head 4 is further enhanced.
The lower bushing 6 is equipped with inlet opening 8 department and is equipped with lug 14, and lug 14 and lower bushing 6 are together moulded, and lug 14 is used for sealing cylinder head water cavity 11, forces the rivers in the water hole 12 to flow into in the inlet opening 8, guarantees the discharge of cooling oil head 4, satisfies the cooling demand of oil head 4.
In this embodiment, the upper bushing 5 and the lower bushing 6 are connected by welding.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (8)
1. A fuel injector liner with cooling structure, comprising: the oil head cooling device comprises an upper bushing and a lower bushing which are fixedly and hermetically connected, wherein the upper bushing is used for being sleeved outside the oil sprayer, the lower bushing is sleeved outside the upper bushing and corresponds to the oil head position of the oil sprayer, an oil head cooling water cavity is arranged between the upper bushing and the lower bushing, and the lower bushing is provided with a water inlet hole and a water outlet hole which are communicated with the oil head cooling water cavity.
2. The fuel injector liner with cooling structure of claim 1, wherein the header cooling water cavity is located below the water inlet hole and the water outlet hole.
3. The fuel injector liner with cooling structure as claimed in claim 1, wherein said inlet opening is inclined downwardly from outside to inside and said outlet opening is inclined upwardly from inside to outside.
4. A fuel injector liner with cooling structure as set forth in claim 3, characterized in that said inlet opening and said outlet opening are of equal height.
5. The fuel injector liner with cooling structure of claim 1, wherein there is one for each of said water inlet hole and said water outlet hole.
6. The fuel injector liner with cooling structure as claimed in claim 1, wherein said lower liner is provided with a lug at said water inlet.
7. The fuel injector liner with cooling structure of claim 6, characterized in that said liner and said lug are integrally provided.
8. The fuel injector liner with cooling structure of claim 1, wherein said upper liner and said lower liner are welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221172979.7U CN217652852U (en) | 2022-05-16 | 2022-05-16 | Oil sprayer bushing with cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221172979.7U CN217652852U (en) | 2022-05-16 | 2022-05-16 | Oil sprayer bushing with cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217652852U true CN217652852U (en) | 2022-10-25 |
Family
ID=83664585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221172979.7U Active CN217652852U (en) | 2022-05-16 | 2022-05-16 | Oil sprayer bushing with cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217652852U (en) |
-
2022
- 2022-05-16 CN CN202221172979.7U patent/CN217652852U/en active Active
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