CN203756405U - High-pressure pump adopting copper brazing technology - Google Patents
High-pressure pump adopting copper brazing technology Download PDFInfo
- Publication number
- CN203756405U CN203756405U CN201420004314.4U CN201420004314U CN203756405U CN 203756405 U CN203756405 U CN 203756405U CN 201420004314 U CN201420004314 U CN 201420004314U CN 203756405 U CN203756405 U CN 203756405U
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- valve
- valve seat
- copper brazing
- integrated
- brazing technology
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a high-pressure pump adopting a copper brazing technology. The high-pressure pump comprises a pump body, a flange, an integrated valve seat, an electromagnetic valve seat, a plunger, a low-pressure joint, an integrated valve, a high-pressure joint and an electromagnetic valve, wherein the upper part of the pump body is provided with a first opening and the lower part of the pump body is provided with a second opening; the flange is fixedly arranged on the side surface of the pump body by adopting the copper brazing technology; the integrated valve seat is fixedly arranged on one side of the pump body by using the copper brazing technology; the electromagnetic valve seat is fixedly arranged on the other side, opposite to the integrated valve seat, of the pump body by using the copper brazing technology; the plunger is fixedly arranged in the second opening of the pump body; the low-pressure joint is fixedly arranged in the first opening of the pump body; the integrated valve is put in the integrated valve seat; the high-pressure joint is fixedly arranged in the female thread of the integrated valve seat through a male thread; the integrated valve is fixedly arranged in the middle of the high-pressure joint and the integrated valve seat; the electromagnetic valve is fixedly arranged in the female thread of the electromagnetic valve seat through a male thread. Since the high-pressure pump disclosed by the utility model adopts the copper brazing technology to manufacture a skeleton structure which consists of the pump body, the flange, the integrated valve seat and the electromagnetic valve seat, the high-pressure pump has the advantages of high brazing strength, reliable quality and low cost.
Description
Technical field
The application relates to the high-pressure service pump in a kind of fuel oil direct-injection system.
Background technique
It is that oil nozzle is set directly in cylinder that fuel oil directly sprays (gasoline direct injection, GDI, also claims in-cylinder direct injection) technology, and be different from traditional fuel injection technic, oil nozzle is arranged on to intake manifold front.
In fuel oil direct-injection system, electronic fuel pump extracts fuel oil from fuel tank, and now the pressure of fuel oil is lower.Low-voltage fuel is converted to high pressure fuel by high-pressure service pump, and now the pressure of fuel oil can reach 150～200Bar.High pressure fuel injects directly in cylinder by oil nozzle again.
High-pressure service pump in existing fuel oil direct-injection system adopts the manufacture of the technology such as laser beam welding, resistance welding mostly, has the shortcoming that weld strength is lower, manufacturing efficiency is lower, manufacture cost is higher.
Copper brazing has advantages of that welding quality stable, manufacturing efficiency are high, low cost of manufacture, but but cannot be for the manufacture of high-pressure service pump.This is owing to there being spring members in high-pressure service pump, if adopt copper brazing technology, so whole high-pressure service pump need to be put into the soldering oven of the above high temperature of 1000 degree, and this can cause the spring members in high-pressure service pump to lose efficacy.
Model utility content
Technical problems to be solved in this application are to provide the high-pressure service pump in a kind of fuel oil direct-injection system, and spring members is designed to dismountable structure, thereby can adopt copper brazing technology to manufacture high-pressure service pump.
For solving the problems of the technologies described above, the application adopts the high-pressure service pump in copper brazing technology to comprise:
---the pump housing, top has the first opening, and bottom has the second opening;
---flange plate, is fixed on the side of the pump housing with copper brazing technology;
---integrated valve seat, is fixed on a side of the pump housing with copper brazing technology;
---solenoid valve seat, is fixed on the opposite side relative with integrated valve seat of the pump housing with copper brazing technology;
---plunger, is fixed in the second opening of the pump housing;
---low-pressure connector, is fixed in the first opening of the pump housing;
---integrated valve, is placed in integrated valve seat;
---high pressure joint, is fixed on outside thread in the internal thread of integrated valve seat; In the middle of high pressure joint and integrated valve seat, fix integrated valve;
---solenoid valve, is fixed on outside thread in the internal thread of solenoid valve seat.
The backbone structure that the high-pressure service pump of the application's employing copper brazing technology adopts the manufacture of copper brazing technology to be made up of the pump housing, flange plate, integrated valve seat, solenoid valve seat, has advantages of that weld strength is high, reliable in quality, with low cost.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the high-pressure service pump of the application's employing copper brazing technology;
Fig. 2 is the schematic diagram of the backbone structure in the application's the high-pressure service pump of employing copper brazing technology;
Fig. 3 is the schematic diagram of the integrated valve in the application's the high-pressure service pump of employing copper brazing technology;
Fig. 4 is the schematic diagram of the solenoid valve in the application's the high-pressure service pump of employing copper brazing technology.
Description of reference numerals in figure:
1 is the pump housing; 11 is the first opening; 12 is the second opening; 2 is flange plate; 3 is integrated valve seat; 4 is solenoid valve seat; 5 is plunger; 51 is supporting sleeve; 6 is low-pressure connector; 61 is filler opening; 7 is integrated valve; 71 is integrated valve valve body; 711 is one-way valve passage; 712 is relief valve passage; 72 is check valve spring; 73 is one-way valve raft plate; 74 is one-way valve interstage sleeve; 75 is relief valve spring; 76 is relief valve supporting sleeve; 77 is relief valve valve ball; 78 is relief valve interstage sleeve; 8 is high pressure joint; 81 is oil outlet; 9 is solenoid valve; 91 is electromagnetic valve body; 92 is armature; 93 is electromagnetic valve coil; 94 is afterbody screw rod; 95 is nut; 96 is guide sleeve; 97 is spring; 98 is valve rod.
Embodiment
Refer to Fig. 1, the application adopts the high-pressure service pump of copper brazing technology to comprise:
---the pump housing 1, top has the first opening 11 for connecting low-pressure connector 6, and bottom has for placing isostructural the second opening 12 of plunger 5.
---flange plate 2, is fixed on the side of the pump housing 1 with copper brazing technology.
---integrated valve seat 3, is fixed on a side of the pump housing 1 with copper brazing technology.
---solenoid valve seat 4, is fixed on the opposite side of the pump housing 1 with copper brazing technology; Solenoid valve seat 4 and integrated valve seat 3 are positioned at the both sides of the pump housing 1.
---plunger 5, is fixed in the second opening 12 of the pump housing 1 with together with the structure such as supporting sleeve 51, spring of periphery.
---low-pressure connector 6, is fixed in the first opening 11 of the pump housing 1.
---integrated valve 7, is placed in integrated valve seat 3.
---high pressure joint 8, is fixed on outside thread in the internal thread of integrated valve seat 3.Integrated valve 7 is positioned in the middle of high pressure joint 8 and integrated valve seat 3, and is fixed by both.
---solenoid valve 9, is fixed on outside thread in the internal thread of solenoid valve seat 4.
The application adopts the working principle of the high-pressure service pump of copper brazing technology to be: low-voltage fuel enters into the chamber between integrated valve seat 3 and solenoid valve seat 4 from filler opening 61.Be subject to the electromagnetic force that solenoid valve 9 produces, plunger 5 moves upward, and pushes the low-voltage fuel in described chamber, forces low-voltage fuel to change high pressure fuel into through integrated valve 7, then is flowed out by oil outlet 81.
High-pressure service pump in the application's fuel oil direct-injection system during fabrication, first forms backbone structure as shown in Figure 2.This backbone structure comprises the pump housing 1, flange plate 2, integrated valve seat 3, solenoid valve seat 4, and can adopt the manufacture of copper brazing technology.Subsequently, low-pressure connector 6 is fixed in the first opening 11 of the pump housing 1, the structures such as plunger 5 are fixed in the second opening 12 of the pump housing 2, integrated valve 7 is placed in integrated valve seat 3 and with screw-thread fit between high pressure joint 8 and integrated valve seat 3 and is fixed, solenoid valve 9 is fixed in solenoid valve seat 4 with screw-thread fit.
Refer to Fig. 3, described integrated valve 7 comprises integrated valve valve body 71, and its inside has one-way valve passage 711 and relief valve passage 712.In one-way valve passage 711, be respectively check valve spring 72, one-way valve valve plate 73, one-way valve interstage sleeve 74 from inside to outside.In relief valve passage 712, be respectively relief valve spring 75, relief valve supporting sleeve 76, relief valve valve ball 77, relief valve interstage sleeve 78 from inside to outside.
Whole integrated valve 7 is first installed one-way valve, then relief valve is installed, and finally the integrated valve assembling 7 is installed among integrated valve seat 3.In the time that one-way valve is installed, successively check valve spring 72, one-way valve valve plate 73 are contained in one-way valve passage 711, then one-way valve interstage sleeve 74 is packed in one-way valve passage 711 by interference fit.In the time that relief valve is installed, first relief valve spring 75 is contained in relief valve supporting sleeve 76, then both are packed in relief valve passage 712 as a whole, reinstall relief valve valve ball 77, then relief valve interstage sleeve 78 is packed in relief valve passage 712 by interference fit.
Refer to Fig. 4, described solenoid valve 9 comprises electromagnetic valve body 91, and its inside has a passage.A part of sectional area of this passage is larger, is called the first chamber, and another part sectional area is less, is called the second chamber.In the first chamber, there is armature 92, guide sleeve 96, spring 97 and valve rod 98.In the second chamber, there is afterbody screw rod 94.There is electromagnetic valve coil 93 in electromagnetic valve body 91 outsides, there is nut 95 in the second chamber one end in addition that protrudes from of afterbody screw rod 94.
The first assembling separately of whole solenoid valve 9, is then arranged on the solenoid valve assembling 9 among solenoid valve seat 4.In the time of assembling solenoid valve 9, successively armature 92, guide sleeve 96, spring 97 and valve rod 98 are packed in the first chamber.Then at the outside electromagnetic valve coil 93 of installing of electromagnetic valve body 91.Then in the second chamber, pack afterbody screw rod 94 into, the part mounting nuts 95 beyond afterbody screw rod 94 protrudes from the second chamber.Afterbody screw rod 94 not one end of mounting nuts 95 can be deep in the first chamber, thereby can be used for regulating magnetic circuit gap and the lift of armature 92, and this is conducive to accurately control electromagnetic force, lowers the requirement on machining accuracy of part.
These are only the application's preferred embodiment, and be not used in restriction the application.For a person skilled in the art, the application can have various modifications and variations.All within the application's spirit and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in the application's protection domain.
Claims (5)
1. a high-pressure service pump that adopts copper brazing technology, is characterized in that, comprising:
---the pump housing, top has the first opening, and bottom has the second opening;
---flange plate, is fixed on the side of the pump housing with copper brazing technology;
---integrated valve seat, is fixed on a side of the pump housing with copper brazing technology;
---solenoid valve seat, is fixed on the opposite side relative with integrated valve seat of the pump housing with copper brazing technology;
---plunger, is fixed in the second opening of the pump housing;
---low-pressure connector, is fixed in the first opening of the pump housing;
---integrated valve, is placed in integrated valve seat;
---high pressure joint, is fixed on outside thread in the internal thread of integrated valve seat; In the middle of high pressure joint and integrated valve seat, fix integrated valve;
---solenoid valve, is fixed on outside thread in the internal thread of solenoid valve seat.
2. the high-pressure service pump of employing copper brazing technology according to claim 1, is characterized in that, the described pump housing, flange plate, integrated valve seat, solenoid valve seat have formed the backbone structure that adopts copper brazing technology to manufacture.
3. the high-pressure service pump of employing copper brazing technology according to claim 1, is characterized in that, described integrated valve comprises integrated valve valve body, has one-way valve passage and relief valve passage in integrated valve valve body;
In one-way valve passage, be respectively check valve spring, one-way valve valve plate, one-way valve interstage sleeve from inside to outside;
In relief valve passage, be respectively relief valve spring, relief valve supporting sleeve, relief valve valve ball, relief valve interstage sleeve from inside to outside.
4. the high-pressure service pump of employing copper brazing technology according to claim 1, is characterized in that, described solenoid valve comprises electromagnetic valve body, has a passage in electromagnetic valve body; The larger part of sectional area of this passage is called the first chamber, and the part that sectional area is less is called the second chamber;
In the first chamber, there is armature, guide sleeve, spring and valve rod;
In the second chamber, there is afterbody screw rod; One end beyond afterbody screw rod protrudes from the second chamber has nut;
There is electromagnetic valve coil in electromagnetic valve body outside.
5. the high-pressure service pump of employing copper brazing technology according to claim 4, is characterized in that, described afterbody screw rod not mounting nuts one end or in the second chamber, or be deep in the first chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004314.4U CN203756405U (en) | 2014-01-06 | 2014-01-06 | High-pressure pump adopting copper brazing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004314.4U CN203756405U (en) | 2014-01-06 | 2014-01-06 | High-pressure pump adopting copper brazing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756405U true CN203756405U (en) | 2014-08-06 |
Family
ID=51251689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420004314.4U Withdrawn - After Issue CN203756405U (en) | 2014-01-06 | 2014-01-06 | High-pressure pump adopting copper brazing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763569A (en) * | 2014-01-06 | 2015-07-08 | 联合汽车电子有限公司 | High-pressure pump based on copper brazing technology |
| CN109477449A (en) * | 2016-07-08 | 2019-03-15 | 罗伯特·博世有限公司 | Method for manufacturing high-pressure fuel pump |
-
2014
- 2014-01-06 CN CN201420004314.4U patent/CN203756405U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763569A (en) * | 2014-01-06 | 2015-07-08 | 联合汽车电子有限公司 | High-pressure pump based on copper brazing technology |
| CN109477449A (en) * | 2016-07-08 | 2019-03-15 | 罗伯特·博世有限公司 | Method for manufacturing high-pressure fuel pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140806 Effective date of abandoning: 20180511 |
|
| AV01 | Patent right actively abandoned |