CN220415562U - High-pressure fuel pump - Google Patents
High-pressure fuel pump Download PDFInfo
- Publication number
- CN220415562U CN220415562U CN202321817746.2U CN202321817746U CN220415562U CN 220415562 U CN220415562 U CN 220415562U CN 202321817746 U CN202321817746 U CN 202321817746U CN 220415562 U CN220415562 U CN 220415562U
- Authority
- CN
- China
- Prior art keywords
- magnetic conduction
- oil passing
- iron core
- passing valve
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000005389 magnetism Effects 0.000 claims abstract description 13
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
Abstract
The utility model provides a high-pressure fuel pump, which is characterized by comprising: a valve body; the magnetic conduction screw sleeve is connected with one end of the valve body in a threaded manner; the armature bushing is arranged in the valve body at the inner end of the magnetic conduction screw sleeve; the oil passing valve seat is arranged at the inner end of the armature bushing; the oil passing valve core is arranged in the oil passing valve seat; an oil passing valve spring is arranged between the oil passing valve core and the inner end of the valve body; the plug is arranged at the outer end of the magnetic conduction threaded sleeve; the magnetic conduction upper cover is arranged on the magnetic conduction threaded sleeve in a covering way and covers part of the plug; the moving iron core shaft is positioned in the middle of the oil passing valve seat and the armature bushing; the iron core is positioned in the middle of the magnetic conduction threaded sleeve, and the end part of the iron core penetrates out of the magnetic conduction upper cover; an electromagnetic valve spring is arranged between the movable iron core shaft and the iron core, and a magnetism isolating ring is arranged at the butt joint position of the armature bushing and the iron core. And the sealing performance is improved by welding the magnetism isolating ring.
Description
Technical Field
The present utility model relates to a high-pressure fuel pump.
Background
The fuel oil is pressurized to 200bar or more by the high-pressure pump, and is fed into the fuel rail, the cam drives the piston shaft in the high-pressure pump to move up and down to apply work to increase pressure, the high-pressure pump is integrated with an electromagnetic valve, and the electromagnetic valve is controlled to switch by a pulse width adjusting mode, so that the fuel oil inlet valve of the high-pressure pump is controlled, and the pressure of the high-pressure pump is controlled.
The opening and closing of the electromagnetic valve directly affects the flow output of the high-pressure pump, and in the coil power-off state, the armature of the electromagnetic valve is loosened, and the oil inlet valve is in an open state under the action of a spring; after the power is on, the armature is attracted, and the valve is closed and opened; the tightness between the armature bushing and the iron core is poor in the process, and leakage is easy in the working process.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a high-pressure fuel pump which is welded with a magnetism isolating ring to improve the tightness.
The aim of the utility model can be achieved by the following technical scheme: a high pressure fuel pump, comprising:
a valve body;
the magnetic conduction screw sleeve is connected with one end of the valve body in a threaded manner;
the armature bushing is arranged in the valve body at the inner end of the magnetic conduction screw sleeve;
the oil passing valve seat is arranged at the inner end of the armature bushing;
the oil passing valve core is arranged in the oil passing valve seat; an oil passing valve spring is arranged between the oil passing valve core and the inner end of the valve body;
the plug is arranged at the outer end of the magnetic conduction threaded sleeve;
the magnetic conduction upper cover is arranged on the magnetic conduction threaded sleeve in a covering way and covers part of the plug;
the moving iron core shaft is positioned in the middle of the oil passing valve seat and the armature bushing;
the iron core is positioned in the middle of the magnetic conduction threaded sleeve, and the end part of the iron core penetrates out of the magnetic conduction upper cover;
an electromagnetic valve spring is arranged between the movable iron core shaft and the iron core, and a magnetism isolating ring is arranged at the butt joint position of the armature bushing and the iron core.
Further, an oil passing valve spring is arranged between the oil passing valve core and the inner end of the valve body.
Further, the end of the armature bushing extends into the magnetic conduction screw sleeve in a stepped manner.
Further, the middle parts of the oil passing valve seat, the armature bushing, the magnetic conduction screw sleeve and the magnetic conduction upper cover are all provided with through holes.
Furthermore, the magnetism isolating ring is welded by laser.
Compared with the prior art, the application has the advantages that: and the sealing performance is improved by welding the magnetism isolating ring.
Drawings
FIG. 1 is a schematic illustration of a fuel pump;
FIG. 2 is a schematic top view of the fuel pump;
in the figure, 1, a plug; 2. an iron core; 3. a magnetically conductive upper cover; 4. a magnetic conduction screw sleeve; 5. an armature bushing; 6. an oil passing valve seat; 7. an oil passing valve core; 8. an oil passing spring; 9. a solenoid valve spring; 10. a moving iron mandrel; 11. a magnetism isolating ring; 12. and a valve body.
Detailed Description
The following is a specific embodiment of the present utility model and a further description of the technical solution of the present utility model is provided with reference to the accompanying drawings.
As shown in fig. 1-2, a high pressure fuel pump, comprising:
a valve body 12;
the magnetic conduction screw sleeve 4 is connected with one end of the valve body 12 in a threaded manner;
an armature bushing 5 mounted inside the valve body 12 at the inner end of the magnetic conduction screw sleeve 4;
an oil passing valve seat 6 mounted at the inner end of the armature bushing 5;
a through-oil valve cartridge 7 installed in the through-oil valve seat 6; an oil passing valve spring 8 is arranged between the oil passing valve core 7 and the inner end of the valve body 12;
the plug 11 is arranged at the outer end of the magnetic conduction threaded sleeve 4;
the magnetic conduction upper cover 3 is arranged on the magnetic conduction threaded sleeve 4 in a covering way and covers part of the plug 11;
the movable iron core shaft 10 is positioned in the middle of the oil passing valve seat 6 and the armature bushing 5;
the iron core 2 is positioned in the middle of the magnetic conduction threaded sleeve 4, and the end part of the iron core penetrates out of the magnetic conduction upper cover 3;
an electromagnetic valve spring 9 is arranged between the movable iron core shaft 10 and the iron core 2, and a magnetism isolating ring 11 is arranged at the butt joint position of the armature bushing 5 and the iron core 2.
An oil passing valve spring 8 is arranged between the oil passing valve core 7 and the inner end of the valve body 12.
The end of the armature bushing 5 extends into the magnetic conduction screw sleeve 4 in a stepped manner.
The middle parts of the oil passing valve seat 6, the armature bushing 5, the magnetic conduction threaded sleeve 4 and the magnetic conduction upper cover 3 are all provided with through holes.
The magnetism isolating ring 11 is welded by laser.
The high-pressure fuel pump can normally open the electromagnetic valve, under the power-off state, the electromagnetic valve spring 9 pushes the movable iron core shaft 10 to jack the fuel passing valve core 7, a gap is generated between the movable iron core shaft and the movable iron core shaft, fuel enters a pressurizing cavity of the valve body 12 through the oil passing hole of the fuel passing valve seat 6 and the gap, after the power is on, the electromagnetic force overcomes the elastic force of the electromagnetic valve spring 9, the movable iron core shaft 10 and the iron core 2 are attracted together, so that the movable iron core shaft 10 returns, the fuel passing valve spring 8 returns to the original state, the fuel passing valve core 7 and the fuel passing valve seat 6 are tightly iron-jointed under the pressure effect, the sealing effect is achieved, the fuel cannot enter the pressurizing cavity, the magnetism isolating ring 11 is used for welding magnetism isolating between the armature bushing 5 and the iron core 2, the sealing reliability is improved by laser welding, and the leakage of the electromagnetic valve in the working process of over 200bara is solved.
The technical scheme of the utility model provides a solution which is obviously different from the prior art aiming at the technical problem that the prior art solution is too single, and the technical scheme of the utility model does not relate to the parts which are the same as the prior art or can be realized by adopting the prior art, and is not repeated.
The foregoing embodiments have been described in a clear and complete manner, and it is apparent that the embodiments described are merely some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (5)
1. A high pressure fuel pump, comprising:
a valve body;
the magnetic conduction screw sleeve is connected with one end of the valve body in a threaded manner;
the armature bushing is arranged in the valve body at the inner end of the magnetic conduction screw sleeve;
the oil passing valve seat is arranged at the inner end of the armature bushing;
the oil passing valve core is arranged in the oil passing valve seat; an oil passing valve spring is arranged between the oil passing valve core and the inner end of the valve body;
the plug is arranged at the outer end of the magnetic conduction threaded sleeve;
the magnetic conduction upper cover is arranged on the magnetic conduction threaded sleeve in a covering way and covers part of the plug;
the moving iron core shaft is positioned in the middle of the oil passing valve seat and the armature bushing;
the iron core is positioned in the middle of the magnetic conduction threaded sleeve, and the end part of the iron core penetrates out of the magnetic conduction upper cover;
an electromagnetic valve spring is arranged between the movable iron core shaft and the iron core, and a magnetism isolating ring is arranged at the butt joint position of the armature bushing and the iron core.
2. A high pressure fuel pump as claimed in claim 1, wherein: an oil passing valve spring is arranged between the oil passing valve core and the inner end of the valve body.
3. A high pressure fuel pump as claimed in claim 1, wherein: the end part of the armature bushing extends into the magnetic conduction screw sleeve in a stepped mode.
4. A high pressure fuel pump as claimed in claim 1, wherein: the middle parts of the oil passing valve seat, the armature bushing, the magnetic conduction screw sleeve and the magnetic conduction upper cover are all provided with through holes.
5. The high pressure fuel pump of claim 1, wherein said magnetism isolating ring is laser welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321817746.2U CN220415562U (en) | 2023-07-12 | 2023-07-12 | High-pressure fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321817746.2U CN220415562U (en) | 2023-07-12 | 2023-07-12 | High-pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220415562U true CN220415562U (en) | 2024-01-30 |
Family
ID=89651367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321817746.2U Active CN220415562U (en) | 2023-07-12 | 2023-07-12 | High-pressure fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220415562U (en) |
-
2023
- 2023-07-12 CN CN202321817746.2U patent/CN220415562U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |