CN220036819U - Cooling structure of fuel injector bushing - Google Patents
Cooling structure of fuel injector bushing Download PDFInfo
- Publication number
- CN220036819U CN220036819U CN202321332758.6U CN202321332758U CN220036819U CN 220036819 U CN220036819 U CN 220036819U CN 202321332758 U CN202321332758 U CN 202321332758U CN 220036819 U CN220036819 U CN 220036819U
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- CN
- China
- Prior art keywords
- oil
- cylinder cover
- injector
- fuel injector
- bushing
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 239000000446 fuel Substances 0.000 title claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000498 cooling water Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a cooling structure of an oil sprayer bushing, which comprises the following components: the oil injector comprises a cylinder cover and an oil injector bushing arranged on the cylinder cover, wherein a cooling water cavity is arranged between the cylinder cover and the oil injector bushing, the cylinder cover is provided with a water inlet channel, the oil injector bushing is provided with an oil head mounting hole, the inner end surface of the oil head mounting hole is an oil injector mounting surface in contact with an oil injector, the outside of the oil head mounting hole is provided with a cylinder cover mounting surface in contact with the cylinder cover, an annular boss is arranged between the oil injector mounting surface and the cylinder cover mounting surface, the annular boss is provided with an annular groove, and the annular groove is communicated with the water inlet channel; a water outlet channel is communicated between the annular groove and the cooling water cavity, and is obliquely arranged from bottom to top and is inclined outwards. The annular groove reduces the wall thickness of the oil sprayer bushing at the annular groove, increases the cooling area, and has the inclined water outlet channel, so that the cooling water has the flow guiding function, the water flow is smooth, the water flow speed is high, the cooling efficiency at the oil nozzle is improved, and the cooling effect of the oil nozzle is good.
Description
Technical Field
The utility model relates to the technical field of diesel engines, in particular to a cooling structure of an oil sprayer bushing.
Background
With the increase of the strengthening degree of the diesel engine and the increase of the power density, the thermal load of the oil head of the oil injector is increased, the cooling of the oil head of the oil injector is insufficient, the high-temperature thermal deformation seal of the oil head of the oil injector is invalid, the atomization injection of the oil injector is invalid, and the diesel engine cannot reliably run. Therefore, how to improve the cooling efficiency at the nozzle of the fuel injector is a problem to be solved.
Disclosure of Invention
Aiming at the defects, the technical problems to be solved by the utility model are as follows: the cooling structure of the oil sprayer bushing can effectively improve the cooling efficiency of the oil sprayer oil nozzle so as to solve the problem of overheating of the oil nozzle.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
an injector liner cooling structure comprising: the oil injector comprises a cylinder cover and an oil injector bushing arranged on the cylinder cover, a cooling water cavity is arranged between the cylinder cover and the oil injector bushing, the cylinder cover is provided with a water inlet channel, the oil injector bushing is provided with an oil head mounting hole, the inner end surface of the oil head mounting hole is an oil injector mounting surface contacted with the oil injector, the outside of the oil head mounting hole is provided with a cylinder cover mounting surface contacted with the cylinder cover,
an annular boss is arranged between the fuel injector mounting surface and the cylinder cover mounting surface, the annular boss is provided with an annular groove, and the annular groove is communicated with the water inlet channel;
the annular groove is communicated with the cooling water cavity, and the water outlet channel is obliquely arranged and is inclined outwards from bottom to top.
Preferably, the injector liner thickness at the bottom of the annular groove is T1, t1= (5-6) mm.
Preferably, the height of the lower side wall of the annular groove protruding out of the fuel injector bushing is T2, t2= (3-4) mm.
Preferably, the thickness of the annular boss is T3, t3= (12-15) mm.
Preferably, the height of the portion of the injector liner below the annular boss is t4, t4= (14-20) mm.
Preferably, the thickness of the portion of the injector liner below the annular boss is t5, t5= (4-6) mm.
Preferably, the included angle between the two opposite water outlet channels is theta, and theta is more than or equal to 20 degrees and less than or equal to 30 degrees.
Preferably, the diameter of the water outlet channel is D, d= (3-4) mm.
Preferably, an O-ring is provided between the cylinder head and the injector, and a gap exists between the cylinder head and the injector liner at the lowermost O-ring.
Preferably, the depth of the gap is T6, t6= (1.5-3) mm, and the width of the gap is T7, t7= (0.3-1.5) mm.
After the technical scheme is adopted, the utility model has the beneficial effects that:
the arrangement of the annular groove thins the wall thickness of the oil sprayer bushing at the annular groove, enlarges the cooling area, and the inclined water outlet channel plays a role in guiding the cooling water, so that the water flow is smooth, the water flow speed is high, the cooling efficiency at the oil nozzle is improved, the oil nozzle cooling effect is good, and in addition, the cooling water flows orderly, so that the generation of bubbles is effectively reduced, the cavitation damage is lightened, and the normal work of the oil sprayer is ensured.
Drawings
FIG. 1 is a schematic illustration of the use of the injector liner cooling structure of the present utility model;
FIG. 2 is a schematic illustration of an assembled configuration of the cylinder head and injector liner of FIG. 1;
in the figure: 1. a cylinder head; 11. a bottom plate; 12. a water inlet channel; 13. a cooling water cavity; 14. a water outlet channel; 2. a fuel injector liner; 21. an oil head mounting hole; 22. an annular boss; 23. an annular groove; 3. an oil injector; 4. an O-shaped sealing ring.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown collectively in fig. 1 and 2, a fuel injector liner cooling structure includes: the oil injector comprises a cylinder cover 1 and an oil injector bush 2 arranged on the cylinder cover, wherein a cooling water cavity 13 is arranged between the cylinder cover 1 and the oil injector bush 2, the cylinder cover 1 is provided with a water inlet channel 12, the oil injector bush 2 is provided with an oil head mounting hole 21, the inner end surface of the oil head mounting hole 21 is an oil injector mounting surface contacted with the oil injector 3, and the outside of the oil head mounting hole 21 is provided with a cylinder cover mounting surface used for being contacted with the cylinder cover 1;
an annular boss 22 is arranged between the fuel injector mounting surface and the cylinder cover mounting surface, the annular boss 22 is provided with an annular groove 23, and the annular groove 23 is communicated with the water inlet channel 12;
a water outlet channel 14 is communicated between the annular groove 23 and the cooling water cavity 13, and the water outlet channel 14 is obliquely arranged from bottom to top and is inclined outwards.
The arrangement of the annular groove 23 thins the wall thickness of the oil sprayer bushing 2 at the annular groove 23, enlarges the cooling area, and the inclined water outlet channel 14 plays a role in guiding the cooling water, so that the water flow is smooth, the water flow speed is high, the cooling efficiency at the oil nozzle is improved, the oil nozzle cooling effect is good, in addition, the generation of bubbles is effectively reduced due to the ordered flow of the cooling water, cavitation damage is lightened, and the normal work of the oil sprayer 3 is ensured.
The thickness of the cooling structure of the injector liner 2 at the bottom of the annular groove 23 is T1, T1 is not easily too small, otherwise the supporting strength is affected, preferably t1= (5-6) mm.
The height of the lower side wall of the annular groove 23 protruding radially out of the injector liner 2 is T2, and the thickness of T2 is not easily too large, otherwise the surface pressure is too small, which affects the tightness of the injector liner 2, preferably t2= (3-4) mm.
The thickness of the annular boss is T3, T3 is not easy to be too small, otherwise the cooling effect is weakened, and preferably T3= (12-15) mm.
The height of the portion of the injector liner 2 below the annular boss 22 is T4, the thickness of T4 is not easily too small, otherwise sealing is affected, preferably t4= (14-20) mm.
The thickness of the portion of the injector liner 2 located below the annular boss 22 is T5, preferably t5= (4-6) mm, and the outer circumference of the injector liner 2 is in interference fit with the cylinder head 1, improving heat transfer while ensuring sealing.
The diameter of the water outlet channel 14 is D, preferably D= (3-4) mm, and the included angle between the two opposite water outlet channels 14 is theta, preferably 20 degrees or more and less than or equal to 30 degrees, so that better uniformity and smoothness of water flow of the cooling cavity can be ensured.
An O-ring 4 is arranged between the cylinder head 1 and the fuel injector 3, and a gap exists between the cylinder head 1 and the fuel injector bush 2 at the position of the lowest O-ring 4. The depth of the gap is T6, T6= (1.5-3) mm, the width of the gap is T7, T7= (0.3-1.5) mm, the gap has larger depth and width, the water flow in the gap is improved, the water flow is smooth, and the problem of corrosion, perforation and water leakage of the salt concentration battery caused by unsmooth water flow in a small gap is solved.
The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.
Claims (10)
1. An injector liner cooling structure comprising: the oil injector comprises a cylinder cover and an oil injector bushing arranged on the cylinder cover, wherein a cooling water cavity is arranged between the cylinder cover and the oil injector bushing, a water inlet channel is arranged on the cylinder cover, an oil head mounting hole is formed in the oil injector bushing, the inner end face of the oil head mounting hole is an oil injector mounting face in contact with an oil injector, and a cylinder cover mounting face in contact with the cylinder cover is arranged outside the oil head mounting hole, and the oil injector is characterized in that:
an annular boss is arranged between the fuel injector mounting surface and the cylinder cover mounting surface, the annular boss is provided with an annular groove, and the annular groove is communicated with the water inlet channel;
the annular groove is communicated with the cooling water cavity, and the water outlet channel is obliquely arranged and is inclined outwards from bottom to top.
2. The fuel injector liner cooling structure according to claim 1, wherein: the thickness of the fuel injector bushing at the bottom of the annular groove is T1, and T1= (5-6) mm.
3. The fuel injector liner cooling structure according to claim 1, wherein: the height of the lower side wall of the annular groove protruding out of the oil sprayer bushing is T2, and T2= (3-4) mm.
4. The fuel injector liner cooling structure according to claim 1, wherein: the thickness of the annular boss is T3, and T3= (12-15) mm.
5. The fuel injector liner cooling structure according to claim 1, wherein: the height of the part of the oil sprayer bushing below the annular boss is T4, and T4= (14-20) mm.
6. The fuel injector liner cooling structure according to claim 5, wherein: the thickness of the part of the oil sprayer bushing below the annular boss is T5, and T5= (4-6) mm.
7. The fuel injector liner cooling structure according to claim 1, wherein: the included angle between the two opposite water outlet channels is theta which is more than or equal to 20 degrees and less than or equal to 30 degrees.
8. The fuel injector liner cooling structure according to claim 1, wherein: the diameter of the water outlet channel is D, and D= (3-4) mm.
9. The fuel injector liner cooling structure according to claim 1, wherein: an O-shaped sealing ring is arranged between the cylinder cover and the fuel injector, and a gap exists between the cylinder cover and the fuel injector bushing at the lowest O-shaped sealing ring.
10. The fuel injector liner cooling structure according to claim 9, wherein: the depth of the gap is T6, T6= (1.5-3) mm, and the width of the gap is T7, T7= (0.3-1.5) mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321332758.6U CN220036819U (en) | 2023-05-29 | 2023-05-29 | Cooling structure of fuel injector bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321332758.6U CN220036819U (en) | 2023-05-29 | 2023-05-29 | Cooling structure of fuel injector bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220036819U true CN220036819U (en) | 2023-11-17 |
Family
ID=88738943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321332758.6U Active CN220036819U (en) | 2023-05-29 | 2023-05-29 | Cooling structure of fuel injector bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220036819U (en) |
-
2023
- 2023-05-29 CN CN202321332758.6U patent/CN220036819U/en active Active
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