CN220622907U - Normally closed electromagnetic valve suitable for high-pressure fuel pump - Google Patents
Normally closed electromagnetic valve suitable for high-pressure fuel pump Download PDFInfo
- Publication number
- CN220622907U CN220622907U CN202321471104.1U CN202321471104U CN220622907U CN 220622907 U CN220622907 U CN 220622907U CN 202321471104 U CN202321471104 U CN 202321471104U CN 220622907 U CN220622907 U CN 220622907U
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- China
- Prior art keywords
- valve
- yoke
- fuel pump
- normally closed
- pressure fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 238000003466 welding Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Abstract
A normally closed electromagnetic valve suitable for high-pressure fuel pump is composed of valve body with the first, the second and the third guide structures, valve seat, valve rod with the first and the third guide structures, spring, armature and electromagnetic coil assembly. The valve body outside the valve body is in an equilibrium state through the first plane of the side surface of the valve seat, the first groove, the second groove and the second plane, so that the defect of low perforating processing efficiency in the prior art can be overcome. The technical scheme of the normally closed electromagnetic valve suitable for the high-pressure fuel pump and the further optimized technical scheme can well achieve the purpose of the utility model. Compared with the technical scheme in the prior art, the utility model has the characteristics of easiness in processing and stability and reliability in working.
Description
Technical Field
The utility model relates to the field of automobile fuel pumps, in particular to a normally closed electromagnetic valve suitable for a high-pressure fuel pump.
Background
The normally closed electromagnetic valve plays a role in controlling the oil output of the fuel oil in the fuel pump of the automobile. The end part of the valve rod of the electromagnetic valve is attached to the end surface of the valve seat in a normal state, the electromagnetic valve is in a closed state, the valve rod axially moves under the action of electromagnetic force, the end part of the valve rod is separated from the end surface of the valve seat, the electromagnetic valve is opened, and the high-pressure fuel pump controls the fuel oil output. Because the normally closed electromagnetic valve works in a high oil pressure environment, the inside and the outside of the electromagnetic valve are required to be in a pressure balance state, and a valve seat of the normally closed electromagnetic valve in the prior art adopts a through hole punching mode, so that the balance of the inside and the outside pressure of the electromagnetic valve is realized; meanwhile, due to structural reasons, the axial movement of the valve rod in the valve body is not guided in multiple sections, and the axial movement of the valve rod is in an unstable state and is easy to incline in the radial direction.
The inventor believes that the structure of the prior art has the defects of complex processing technology, low efficiency and low working stability and reliability.
Disclosure of Invention
The utility model aims to provide a normally closed electromagnetic valve which is easy to process and stable and reliable in operation and is suitable for a high-pressure fuel pump.
The purpose of the utility model is realized in the following way: the utility model relates to a normally closed electromagnetic valve suitable for a high-pressure fuel pump, which comprises a valve body, a valve seat, a valve rod, a spring, an armature and an electromagnetic coil component, wherein the valve body is a component formed by axially connecting a front yoke and a rear yoke, the front yoke is of a structure with two open ends in the axial direction, one end of the front yoke, which is far away from the rear yoke, is provided with a counter bore, one end of the front yoke, which faces the rear yoke, is provided with a valve rod second guide structure, the rear yoke is of a structure with one open end in the axial direction, the other end of the front yoke is closed, the valve seat is fixed in the counter bore of the front yoke, the valve seat is provided with a valve rod first guide structure, the valve rod penetrates through the valve seat and the valve body, the spring is penetrated on the valve rod and is fixedly provided with a spring seat, the spring and the spring seat is positioned between the first guide structure and the second guide structure, the valve rod is fixedly connected with the armature and a guide block, the end face of the front yoke, the end face, which faces the rear yoke is a limit end face of the axial movement of the armature, the valve rod third guide structure is formed by the guide block, and the valve body penetrates the valve rod in the electromagnetic coil component.
The technical scheme of the utility model is as follows: the valve rod is firstly penetrated into the valve seat, the spring and the fixing seat are penetrated on the valve rod, the valve seat is fixed on the counter bore of the front yoke, the armature and the guide block are fixedly connected on the valve rod, and finally the front yoke is connected with the rear yoke.
According to the technical scheme, the valve rod seals the oil outlet of the valve seat in a normal state, when the accelerator is stepped down, the ECU sends a pulse electric signal to the electromagnetic coil assembly outside the valve body according to information such as the engine rotating speed, the coil generates a magnetic field, the magnetic force generated by the armature overcomes the elastic force of the spring, the armature drives the valve rod to move in the axial direction away from the valve seat, and the valve rod is separated from the valve seat, so that the oil outlet of the high-pressure fuel pump is controlled. In the process of frequent axial movement of the valve rod away from the valve seat and the closed valve seat, the valve rod is provided with three guide structures, so that the defect that the valve rod in the prior art is easy to radially move and poor in working stability is overcome.
According to further optimization of the technical scheme, the electromagnetic coil assembly comprises a coil unit consisting of an inner framework, a coil and an outer framework, a magnetic conduction plate is arranged at one end of the coil unit, a wire holder and a shell are arranged outside the coil unit and the magnetic conduction plate, and a coil connecting plug is arranged on the wire holder.
According to the technical scheme, the front yoke is provided with a first welding step towards the end of the rear yoke, the end of the rear yoke is provided with a second welding step towards the front yoke, the first welding step and the second welding step are provided with connecting sleeves, and the valve body is of a structure that the front yoke is connected with the rear yoke through the connecting sleeves and welded into a whole.
According to the technical scheme, the valve rod is of a structure consisting of a valve cover and a rod body.
According to the technical scheme, the end face, far away from the front yoke, of the valve seat is a closed end face, an oil inlet hole is formed in the lateral direction of the valve seat, a first plane is arranged on the side face of the fixed connection position of the valve seat and the front yoke counter bore, and a first groove is formed in the end face, facing the front yoke, of the valve seat.
According to further optimization of the technical scheme, the second groove is formed in the end face, facing the rear yoke, of the front yoke.
According to further optimization of the technical scheme, the side face of the guide block is composed of an arc face and a second plane.
According to the technical scheme, the valve body is in the balanced state through the first plane, the first groove, the second groove and the second plane of the side face of the valve seat, the internal pressure and the external pressure of the valve body of the normally closed electromagnetic valve are balanced, meanwhile, the guide block and the rear yoke are in good movable fit, balance of the internal pressure and the external pressure of the valve body is achieved, and the defect of low perforating machining efficiency in the prior art is overcome.
The normally closed electromagnetic valve suitable for the high-pressure fuel pump well achieves the aim of the utility model through the technical scheme and the optimized technical scheme. Compared with the technical scheme in the prior art, the utility model has the characteristics of easiness in processing and stability and reliability in working.
Drawings
Fig. 1 is a schematic view of a part of a normally closed electromagnetic valve suitable for a high-pressure fuel pump according to the present utility model.
Fig. 2 is a schematic structural view of the electromagnetic coil assembly of the present utility model.
Fig. 3 is a schematic diagram of an explosive structure according to the present utility model.
Fig. 4 is a schematic structural view of a valve stem.
Fig. 5 is a schematic structural view of the valve seat.
Fig. 6 is a schematic structural view of the guide block.
Fig. 7 is a schematic structural view of the valve body.
In the attached drawings, 1, a valve rod; 11. a valve cover; 12. a valve stem; 2. a valve seat; 21. closing the end face; 22. an oil inlet hole; 23. a first plane; 24. a first groove; 25. a first guide structure; 3. a valve body; 31. a front yoke; 311. a first welding step; 312. a second groove; 313. a second guide structure; 32. a connection sleeve; 33. a rear yoke; 331. a second welding step; 4. a spring; 5. a spring seat; 6. an armature; 7. a guide block; 71. an arc surface; 72. a second plane; 8. an electromagnetic coil assembly; 81. an inner skeleton; 82. a coil; 83. an outer skeleton; 84. a housing; 85. a magnetic conductive plate; 86. a wire holder; 87. the coil is connected with the plug.
Detailed Description
The utility model is further illustrated by way of example with reference to the accompanying drawings in which:
as shown in fig. 1, 3 and 7, a normally closed solenoid valve for a high pressure fuel pump according to the present utility model comprises a valve body 3, a valve seat 2, a valve rod 1, a spring 4, an armature 6 and a solenoid assembly 8, wherein the valve body 3 is a member axially connected by a front yoke 31 and a rear yoke 33, the front yoke 31 is a structure having both axial ends open, a counter bore is formed at one end of the front yoke 31 remote from the rear yoke 33, a second guide structure 313 of the valve rod 1 is formed at one end of the front yoke 31 facing the rear yoke 33, the rear yoke 33 is a structure having one axial end open and the other end closed, and the valve seat 2 is fixed in the counter bore of the front yoke 31.
As shown in fig. 1, 3, 5 and 7, the valve seat 2 is provided with a first guiding structure 25 of the valve rod 1, the valve rod 1 is arranged in the valve seat 2 and the valve body 3 in a penetrating manner, the valve rod 1 is provided with a spring 4 in a penetrating manner and is fixedly provided with a spring seat 5, the spring 4 and the spring seat 5 are positioned between the first guiding structure 25 and a second guiding structure 313, the valve rod 1 is fixedly connected with an armature 6 and a guiding block 7, the end face of the front yoke 31 facing the rear yoke 33 is a limiting end face of the armature 6 moving axially, the guiding block 7 and an inner hole of the rear yoke 33 form a third guiding structure of the valve rod 1, and the valve body 3 is arranged in the electromagnetic coil assembly 8 in a penetrating manner.
As shown in fig. 2, the electromagnetic coil assembly 8 includes a coil unit composed of an inner frame 81, a coil 82 and an outer frame 83, a magnetic conductive plate 85 is disposed at one end of the coil unit, a wire holder 86 and a housing 84 are disposed outside the coil unit and the magnetic conductive plate 85, and a coil connection plug 87 is disposed on the wire holder 86.
As shown in fig. 7, a first welding step 311 is provided at an end of the front yoke 31 facing the rear yoke 33, a second welding step 331 is provided at an end of the rear yoke 33 facing the front yoke 31, a coupling sleeve 32 is provided at the first welding step 311 and the second welding step 331, and the valve body 3 is formed by integrally coupling the front yoke 31 and the rear yoke 33 with the coupling sleeve 32.
As shown in fig. 4, the valve rod 1 is composed of a valve cover 11 and a rod body 12.
As shown in fig. 5, the end surface of the valve seat 2 far away from the front yoke 31 is a closed end surface 21, the lateral direction of the valve seat 2 is provided with an oil inlet hole 22, the side surface of the fixed connection part of the valve seat 2 and the counter bore of the front yoke 31 is provided with a first plane 23, and the end surface facing the front yoke 31 is provided with a first groove 24.
As shown in fig. 7, the front yoke 31 is provided with a second groove 312 on an end surface facing the rear yoke 33.
As shown in fig. 6, the side surface of the guide block 7 is composed of an arc surface 71 and a second plane 72.
Claims (7)
1. A normally closed electromagnetic valve suitable for a high-pressure fuel pump comprises a valve body (3), a valve seat (2), a valve rod (1), a spring (4), an armature (6) and an electromagnetic coil assembly (8), and is characterized in that the valve body (3) is a component axially connected by a front yoke (31) and a rear yoke (33), the front yoke (31) is of a structure with two axial ends open, one end of the front yoke (31) far away from the rear yoke (33) is provided with a counter bore, one end of the front yoke (31) facing the rear yoke (33) is provided with a second guide structure (313) of the valve rod (1), the rear yoke (33) is provided with an axial end opening, the other end is of a closed structure, the valve seat (2) is fixed in the counter bore of the front yoke (31), the valve rod (1) is provided with a first guide structure (25), the valve rod (1) penetrates through the valve seat (2) and the valve body (3), the spring (4) is fixedly arranged on the valve rod (1), the spring (4) and the first guide structure (5) are positioned between the first guide structure (25) and the first guide structure (6) and the valve rod (7) which are also fixed, the end face of the front yoke (31) facing the rear yoke (33) is a limiting end face for axial movement of the armature (6), the guide block (7) and an inner hole of the rear yoke (33) form a third guide structure of the valve rod (1), and the valve body (3) is arranged in the electromagnetic coil assembly (8) in a penetrating mode.
2. A normally closed solenoid valve for a high pressure fuel pump according to claim 1, wherein said solenoid assembly (8) comprises a coil unit consisting of an inner frame (81), a coil (82) and an outer frame (83), one end of the coil unit being provided with a magnetically conductive plate (85), said coil unit and said magnetically conductive plate (85) being provided with a wire holder (86) and a housing (84) outside, said wire holder (86) being provided with a coil connection plug (87).
3. A normally closed solenoid valve for a high pressure fuel pump according to claim 1, wherein a first welding step (311) is provided at an end of the front yoke (31) facing the rear yoke (33), a second welding step (331) is provided at an end of the rear yoke (33) facing the front yoke (31), a connecting sleeve (32) is provided at the first welding step (311) and the second welding step (331), and the valve body (3) is formed by integrally connecting and welding the front yoke (31) and the rear yoke (33) with the connecting sleeve (32).
4. A normally closed solenoid valve for a high pressure fuel pump according to claim 1, wherein said valve stem (1) is a structure composed of a valve cover (11) and a stem body (12).
5. The normally closed electromagnetic valve suitable for the high-pressure fuel pump according to claim 1, wherein the end surface of the valve seat (2) far away from the front yoke (31) is a closed end surface (21), the side direction of the valve seat (2) is provided with an oil inlet hole (22), the side surface of the fixed connection part of the valve seat (2) and the counter bore of the front yoke (31) is provided with a first plane (23), and the end surface facing the front yoke (31) is provided with a first groove (24).
6. A normally closed solenoid valve for a high pressure fuel pump according to claim 1, wherein the front yoke (31) is provided with a second groove (312) on an end face thereof facing the rear yoke (33).
7. A normally closed solenoid valve for a high pressure fuel pump according to claim 1, characterized in that the side of the guide block (7) is constituted by an arc surface (71) and a second plane (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321471104.1U CN220622907U (en) | 2023-06-10 | 2023-06-10 | Normally closed electromagnetic valve suitable for high-pressure fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321471104.1U CN220622907U (en) | 2023-06-10 | 2023-06-10 | Normally closed electromagnetic valve suitable for high-pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220622907U true CN220622907U (en) | 2024-03-19 |
Family
ID=90214854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321471104.1U Active CN220622907U (en) | 2023-06-10 | 2023-06-10 | Normally closed electromagnetic valve suitable for high-pressure fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220622907U (en) |
-
2023
- 2023-06-10 CN CN202321471104.1U patent/CN220622907U/en active Active
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