CN203050965U - Coaxial oil-inlet-outlet combination valve for common rail pump - Google Patents
Coaxial oil-inlet-outlet combination valve for common rail pump Download PDFInfo
- Publication number
- CN203050965U CN203050965U CN 201320069634 CN201320069634U CN203050965U CN 203050965 U CN203050965 U CN 203050965U CN 201320069634 CN201320069634 CN 201320069634 CN 201320069634 U CN201320069634 U CN 201320069634U CN 203050965 U CN203050965 U CN 203050965U
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- Prior art keywords
- valve
- oil
- hole
- conical surface
- valve seat
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- Expired - Fee Related
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- 238000009826 distribution Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 28
- 239000000295 fuel oil Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010761 intermediate fuel oil Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model relates to a coaxial oil-inlet-outlet combination valve for a common rail pump. The oil-inlet-outlet combination valve improves oil supplying efficiency and comprises an oil-outlet valve, a valve seat with a through hole formed in the center and an oil-inlet cone valve. A valve seat ring groove is arranged in the outer lateral wall of the valve seat, and one or more oil-inlet holes communicated with the through hole are formed in the valve seat ring groove. The oil-outlet valve is arranged on the through hole of the valve seat and covers an opening at the upper end of the through hole, the oil-inlet cone valve extends into the through hole of the valve seat, the lower portion of the oil-inlet cone valve blocks an opening at the lower end of the through hole, the lateral wall of the part of the oil-inlet cone valve extending into the through hole is further provided with an annular oil-inlet valve cone face and an annular oil-inlet valve ring groove, the oil-inlet valve cone face is adjacent with the oil-inlet valve ring groove, a valve seat cone face sealed with the oil-inlet cone face in a matched mode is arranged on the lateral wall of the through hole, and a vertically penetrating central oil hole is arranged at the center of the oil-inlet cone valve. The coaxial oil-inlet-outlet combination valve for the common rail pump reduces manufacturing cost, an oil-inlet channel and an oil-outlet channel are arranged in the valve seat, flowing resistance of fuel oil is reduced, and meanwhile, dead volume is also reduced, and oil-supplying efficiency is improved.
Description
Technical field
The utility model relates to the oil-fired system field, and particularly a kind of coaxial-type is total to the rail pump and passes in and out oily combination brake switch and proporting.
Background technique
Prior art such as the patent CN101094983 of Bosch Corp. disclose a kind of turnover fuel tap structure of high-pressure common rail oil feed pump, see Fig. 7.
Its oiling valve and outlet valve adhere to two independently valves separately, but with the same axis of plunger, be arranged in the plunger bushing, oiling valve below, outlet valve is pressed on the oiling valve.Low-voltage fuel enters in the plunger cavity through oiling valve, when pressing oil, high pressure fuel through the outlet valve fuel feeding in the high-pressure common rail pipe, simple in structure, but turnover fuel tap surface of contact place, necessary sealed high pressure fuel oil, so two surface of contact machining accuracies are high, thereby increased manufacture cost.
Summary of the invention
It is a kind of cheap for manufacturing cost that the purpose of this utility model is to provide, and the coaxial-type that improves fuel feeding efficient is total to the rail pump and passes in and out oily combination brake switch and proporting.
The purpose of this utility model is achieved in that it comprises that outlet valve 4, center have the valve seat 5 of through hole 5.6, oil-feed cone valve 6 is formed, it is characterized in that: the outer side wall at valve seat 5 is provided with valve seat ring recess 5.5, is provided with 1 or one or more in the valve seat ring recess 5.5 and leads to the oil inlet hole 5.2 of through hole 5.6; Outlet valve 4 is arranged on through hole 5.6 tops of valve seat 5 and covers through hole 5.6 upper end open, oil-feed cone valve 6 extends in valve seat 5 through holes 5.6 and through hole 5.6 lower ending openings are blocked in the below of oil-feed cone valve 6, extend into the oiling valve conical surface 6.2 that also is provided with annular on the sidewall of through hole 5.6 parts and the oiling valve ring recess 6.3 of annular at oil-feed cone valve 6, the oiling valve conical surface 6.2 is adjacent with oiling valve ring recess 6.3, side-walls at through hole 5.6 is provided with the valve seat conical surface 5.4 that is sealed and matched with the oiling valve conical surface 6.2, and the center of oil-feed cone valve 6 is provided with the oiling valve center oilhole 6.1 of up/down perforation.。
Advantage of the present utility model is to have reduced manufacture cost, and the turnover oil duct is located in the valve seat, has reduced the resistance of fuel flow, has also reduced dead volume simultaneously, improves fuel feeding efficient.
Description of drawings
Fig. 1 is the utility model embodiment's 1;
Fig. 2 is the sectional view of Figure 1A-A face;
Fig. 3 is the utility model embodiment's 2;
Structural representation when Fig. 4 is ball valve for outlet valve; A arranges that for the oiling valve external sealed b is sealing arrangement in the oiling valve.
Fig. 5 is the another kind of way of example of installing of oiling valve spring.
Fig. 6 adopts the volute spring mode for the oiling valve spring.
Fig. 7 is the accompanying drawing of patent CN101094983.
Label declaration
Among the figure: 1 delivery valve holder; 1.1 oil outlet; 1.2 seal face;
2 plunger bushings, 2.1 barrel supply ports, 2.2 sealing planes, 2.3 plunger cavities, 2.4 shoulders;
3 oil outlet valve springs;
4 outlet valves; 4.1 the outlet valve conical surface; 4.2 logical oily groove;
5 valve seats; 5.1 the through hole conical surface; 5.2 oil inlet hole; 5.3 valve seat bottom surface; 5.4 the valve seat conical surface; 5.5 valve seat ring recess; 5.6 oil-feed valve opening;
6 oil-feed cone valves; 6.1 oiling valve center oilhole; 6.2 the oiling valve conical surface; 6.3 oiling valve ring recess.
7 oiling valve springs;
8 plungers;
9 pads; 10 steel balls; 11 delivery valve seats.
Embodiment
As Figure 1-3: it comprises that outlet valve 4, center have the valve seat 5 of through hole 5.6, oil-feed cone valve 6 is formed, it is characterized in that: the outer side wall at valve seat 5 is provided with valve seat ring recess 5.5, is provided with 1 or one or more in the valve seat ring recess 5.5 and leads to the oil inlet hole 5.2 of through hole 5.6; Outlet valve 4 is arranged on through hole 5.6 tops of valve seat 5 and covers through hole 5.6 upper end open, oil-feed cone valve 6 extends in valve seat 5 through holes 5.6 and through hole 5.6 lower ending openings are blocked in the below of oil-feed cone valve 6, extend into the oiling valve conical surface 6.2 that also is provided with annular on the sidewall of through hole 5.6 parts and the oiling valve ring recess 6.3 of annular at oil-feed cone valve 6, the oiling valve conical surface 6.2 is adjacent with oiling valve ring recess 6.3, side-walls at through hole 5.6 is provided with the valve seat conical surface 5.4 that is sealed and matched with the oiling valve conical surface 6.2, and the center of oil-feed cone valve 6 is provided with the oiling valve center oilhole 6.1 of up/down perforation.。
When using valve seat 5 UNICOM's outlet valves 4, oil-feed cone valve 6 are put into delivery valve holder 1, surface of contact in valve seat end face and valve seat bottom surface 5.3 and the delivery valve holder 1 cooperatively interacts, outlet valve 4 tops are provided with outlet valve 4 tops and are provided with oil outlet valve spring 3, and the top of oil outlet valve spring 3 connects delivery valve holder 1; The below of oil-feed cone valve 6 connects oiling valve spring 7, and the below of oiling valve spring 7 connects the upper end portion of plunger 8.
Below in conjunction with specific embodiment the utility model is described:
1. as shown in Figure 1, 2:
The described valve seat conical surface 5.4 is positioned at valve seat 5 through hole madial wall lower edges, and the circular cone that the described oiling valve conical surface 6.2 is provided with for oil-feed cone valve 6 outer side walls is received the edge; The diameter of the horizontal annular tangent plane of the oiling valve conical surface 6.2 and the valve seat conical surface 5.4 surface of contact is positioned at the cross-sectional diameter in outlet port, through hole lower end less than oil-feed cone valve 6;
The lower edge of oiling valve ring recess 6.3 connects the oiling valve conical surface 6.2, oiling valve ring recess 6.3 and UNICOM mutual corresponding with oil inlet hole 5.2 positions.
Oil-feed cone valve 6 and outlet valve 5 all are cone valves, and outlet valve 5 is placed on the valve seat top, and oil-feed cone valve 6 is placed on valve seat 5 lower ends.
Oil-feed cone valve spring 7 one ends are enclosed within on the oil-feed cone valve, and the other end is enclosed within on the head cylindrical 8.1 of plunger 8.Oil outlet valve spring 3 and oil outlet valve spring seat 11 are installed on the outlet valve 6, by delivery valve holder 1 valve seat bottom surface 5.3 are pressed on the sealing plane 2.2 of plunger bushing 2.The sealed high pressure fuel oil.The through hole conical surface 5.1 on the valve seat 5 cooperates with the outlet valve conical surface 4.1, and through hole 5.6 is precision pairs with the outer side surface of oil-feed cone valve 6.The valve seat conical surface 5.4 of valve seat 5 all is the precision-fit part with the oiling valve conical surface 6.2 on the oil-feed cone valve 6, is used for the sealed high pressure fuel oil.
Working principle: with reference to figure 1,
The oil-feed process:
Press oily process:
In this example, oil-feed cone valve and outlet valve use the seal valve of same male cone (strobilus masculinus).
Fig. 3 is the utility model embodiment's 2.
In the axis hole of valve seat, be provided with an annular and receive the edge, annular is received along the upper end that is positioned at through hole 5.6 madial wall oil inlet holes 5.2, the edge of receiving the edge in annular is the valve seat conical surface 5.4, described oiling valve ring recess 6.3 closes up for the annular shape that the outside, oiling valve upper end portion is provided with, this annular shape closes up and oil inlet hole 5.2 UNICOMs, annular shape close up above, the outer edge of oil-feed cone valve 6 upper-end surfaces is the oiling valve conical surface 6.2; The diameter of the horizontal annular tangent plane of the oiling valve conical surface 6.2 and the valve seat conical surface 5.4 surface of contact is positioned at the cross-sectional diameter in outlet port, through hole 5.6 lower end greater than oil-feed cone valve 6.
The oil-feed process:
Press oily process:
When plunger 8 moves upward, compression oil-feed cone valve spring 7, the oiling valve conical surface 6.2 on the oil-feed cone valve 6 is pressed onto on the valve seat conical surface 5.4 on the valve seat 5, form high pressure sealing, because the oil-feed valve opening 5.6 of valve seat 5 is precision pairs with the outer side wall of oil-feed cone valve 6, cut off in the low-voltage fuel of plunger cavity 2.3 mesohigh fuel flow in the valve seat ring recess 5.5 of valve seat 5.High pressure fuel in the plunger cavity 2.3 is applied on outlet valve 4 bottom surfaces by the oiling valve center oilhole 6.1 of oil-feed cone valve 6, when fuel pressure is enough big, it is with lift off a seat the through hole conical surface 5.1 on 5 of the outlet valve conical surface 4.1 of outlet valve 4, high pressure fuel is through the gap of logical oily groove 4.2 from the outlet valve conical surface 4.1 and the through hole conical surface 5.1 of outlet valve 4, pass through the endoporus in the delivery valve seat 11 again, lead in the high-pressure common rail pipe through the oil outlet 1.1 in the delivery valve holder 1.
As shown in Figure 4:
Outlet valve described in the utility model also volume can be for being ball valve 10, and through hole 5.6 upper edges are the through hole conical surface 5.1, and ball valve 10 is sealed and matched with the through hole conical surface 5.1.
Outlet valve 10 is steel balls, and the oil-feed cone valve is the cone valve that gos deep in the valve body 5, because outlet valve adopts steel ball, only needs to process the through hole conical surface 5.1 on the valve seat 5, has simplified the structure of combination brake switch and proporting greatly, has reduced manufacture cost.
Fig. 5 is another setting type of the utility model oil-feed cone valve spring 7.The oil-feed spring directly is not enclosed within on the end 8.1 of plunger 8, and in plunger bushing 2, process little shoulder 2.4, inserted shim 9, supporting oil-feed cone valve spring 7, the elastic force of oil-feed cone valve spring 7 and the motion of plunger 8 are had nothing to do, improved the reliability of oil-feed cone valve spring work.
Fig. 6 oil-feed cone valve spring adopts volute spring, because oil-feed cone valve spring 7 is installed on plunger bushing 2 Intermediate gaskets 9, the space is less, and the fuel oil turnover of adopting the volute spring 7 that becomes rigidity that the motion of oil-feed cone valve 6 more is conducive in the plunger cavity is flowed.
The fuel-displaced combination brake switch and proporting of high-pressure common rail oil feed pump of the present utility model oil-feed can be used on the various forms of plunger type high voltage common rail oil feed pumps.
Claims (5)
1. a coaxial-type is total to the rail pump and passes in and out oily combination brake switch and proporting, it comprises that outlet valve (4), center have the valve seat (5) of through hole (5.6), oil-feed cone valve (6) is formed, it is characterized in that: the outer side wall at valve seat (5) is provided with valve seat ring recess (5.5), is provided with 1 or one or more in the valve seat ring recess (5.5) and leads to the oil inlet hole (5.2) of through hole (5.6); Outlet valve (4) is arranged on through hole (5.6) top of valve seat (5) and covers through hole (5.6) upper end open, oil-feed cone valve (6) extends in valve seat (5) through hole (5.6) and through hole (5.6) lower ending opening is blocked in the below of oil-feed cone valve (6), extend into the oiling valve conical surface (6.2) and the annular oiling valve ring recess (6.3) that also is provided with annular on through hole (5.6) sidewall partly at oil-feed cone valve (6), the oiling valve conical surface (6.2) is adjacent with oiling valve ring recess (6.3), side-walls at through hole (5.6) is provided with the valve seat conical surface (5.4) that is sealed and matched with the oiling valve conical surface (6.2), and the center of oil-feed cone valve (6) is provided with the oiling valve center oilhole (6.1) of up/down perforation.
2. coaxial-type according to claim 1 is total to the rail pump and passes in and out oily combination brake switch and proporting: it is characterized in that: the described valve seat conical surface (5.4) is positioned at valve seat (5) through hole (5.6) madial wall lower edge, and the circular cone that the described oiling valve conical surface (6.2) is provided with for oil-feed cone valve (6) outer side wall is received the edge; The diameter D of the horizontal annular tangent plane of the oiling valve conical surface (6.2) and the valve seat conical surface (5.4) surface of contact is greater than the body diameter D1 of oil-feed cone valve (6);
The lower edge of oiling valve ring recess (6.3) connects the oiling valve conical surface (6.2), oiling valve ring recess (6.3) and UNICOM mutual corresponding with oil inlet hole (5.2) position.
3. coaxial-type according to claim 1 is total to the rail pump and passes in and out oily combination brake switch and proporting, it is characterized in that: in the axis hole of valve seat, be provided with an annular and receive the edge, annular is received along the upper end that is positioned at through hole (5.6) madial wall oil inlet hole (5.2), the edge of receiving the edge in annular is the valve seat conical surface (5.4), described oiling valve ring recess (6.3) closes up for the annular shape that the outside, oiling valve upper end portion is provided with, this annular shape closes up and oil inlet hole (5.2) UNICOM, annular shape close up above, the outer edge of oil-feed cone valve (6) upper-end surface is the oiling valve conical surface (6.2); The diameter D of the horizontal annular tangent plane of the oiling valve conical surface (6.2) and the valve seat conical surface (5.4) surface of contact is less than the body diameter D1 of oil-feed cone valve (6).
4. pass in and out oily combination brake switch and proporting according to claim 1 or the common rail pump of 2 or 3 described coaxial-types, it is characterized in that: outlet valve (4) is made of the loam cake that integrates and column, loam cake is for circle and cover whole through hole (5.6), the outer edge of loam cake lower surface is the outlet valve conical surface (4.1), through hole (5.6) upper edge is the through hole conical surface (5.1), and the outlet valve conical surface (4.1) closely cooperates with the through hole conical surface (5.1); Described column is that the side is provided with the vertically logical oily groove (4.2) of distribution of many groups.
5. pass in and out oily combination brake switch and proporting according to claim 1 or the common rail pump of 2 or 3 described coaxial-types, it is characterized in that: described outlet valve is ball valve (10), through hole (5.6) upper edge is the through hole conical surface (5.1), and ball valve (10) is sealed and matched with the through hole conical surface (5.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069634 CN203050965U (en) | 2013-02-06 | 2013-02-06 | Coaxial oil-inlet-outlet combination valve for common rail pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069634 CN203050965U (en) | 2013-02-06 | 2013-02-06 | Coaxial oil-inlet-outlet combination valve for common rail pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050965U true CN203050965U (en) | 2013-07-10 |
Family
ID=48733924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069634 Expired - Fee Related CN203050965U (en) | 2013-02-06 | 2013-02-06 | Coaxial oil-inlet-outlet combination valve for common rail pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089508A (en) * | 2013-02-06 | 2013-05-08 | 福建省莆田市中涵机动力有限公司 | Coaxial type common rail pump oil inlet and outlet combined valve |
| CN107989730A (en) * | 2017-12-28 | 2018-05-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump and for its into oil outlet valve component |
-
2013
- 2013-02-06 CN CN 201320069634 patent/CN203050965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089508A (en) * | 2013-02-06 | 2013-05-08 | 福建省莆田市中涵机动力有限公司 | Coaxial type common rail pump oil inlet and outlet combined valve |
| CN107989730A (en) * | 2017-12-28 | 2018-05-04 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of high voltage common rail pump and for its into oil outlet valve component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170911 Granted publication date: 20130710 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230206 Granted publication date: 20130710 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |