CN109763925A - A kind of high-pressure fuel-feed pump pump head component - Google Patents
A kind of high-pressure fuel-feed pump pump head component Download PDFInfo
- Publication number
- CN109763925A CN109763925A CN201910229290.XA CN201910229290A CN109763925A CN 109763925 A CN109763925 A CN 109763925A CN 201910229290 A CN201910229290 A CN 201910229290A CN 109763925 A CN109763925 A CN 109763925A
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- China
- Prior art keywords
- eccentric orfice
- oil
- oil outlet
- accumulator
- fuel
- 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.)
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- 239000000446 fuel Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000009825 accumulation Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 98
- 239000002199 base oil Substances 0.000 claims description 6
- 230000002706 hydrostatic effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000306 component Substances 0.000 description 6
- 239000002283 diesel fuel Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a kind of high-pressure fuel-feed pump pump head components, including the accumulator being fixed in the high-pressure fuel-feed pump pump housing, it further include two logical oil valve seats, fuel feed hole and oil outlet are provided on the two logical oil valve seat, the accumulator is provided with the first eccentric orfice being connected to fuel feed hole and the second eccentric orfice being connected to oil outlet, by the way that sequentially connected oil inlet valve spring retainer is arranged in first eccentric orfice, oil inlet valve spring and inlet valve steel ball are contacted with fuel feed hole, by the way that sequentially connected oil outlet valve spring seat is arranged in second eccentric orfice, oil outlet valve spring, delivery valve steel ball is contacted with oil outlet, the oil outlet is connected to the opposite other end of the second eccentric orfice connecting pin with plunger matching parts cavity, first eccentric orfice is connected to by the through-hole through two logical oil valve seats with plunger matching parts cavity, the pressure accumulation of second eccentric orfice and accumulator Chamber connection.It can be effectively reduced production and application cost through the invention, improve reliability.
Description
Technical field
The invention belongs to high-pressure fuel-feed pump field more particularly to a kind of high-pressure fuel-feed pump pump head components.
Background technique
Diesel engine has a wide range of applications in national economy every field, wants in national industrial policies upgrading and emission regulation
Ask under increasingly strict background, common rail for diesel engine fuel system be it is most reliable at present, using most wide solution, and high pressure supplies
The technical level of oil pump directly determines reliability, dynamic property, economy and the environmental-protecting performance of common rail fuel combustion system.
Core component one of of the pump head component as high-pressure fuel-feed pump, existing high-pressure fuel-feed pump, inlet valve and delivery valve
Be it is separated, be mounted on different location, it has not been convenient to maintenance or replacement so that may require that if carrying out integral replacing it is many additionally
Unnecessary use cost.
Summary of the invention
It is an object of the present invention to provide a kind of high-pressure fuel-feed pump pump head components, can be effectively reduced production and application cost,
Improve reliability.
To realize the purpose, a kind of high-pressure fuel-feed pump pump head component is provided, including be fixed on the high-pressure fuel-feed pump pump housing
In accumulator, further include that one end is connect and what is connect at the top of the other end and high-pressure fuel-feed pump plunger matching parts two leads to accumulator
Oil valve seat is provided with fuel feed hole and oil outlet on the two logical oil valve seat, and the accumulator is provided be connected to fuel feed hole
One eccentric orfice and the second eccentric orfice being connected to oil outlet, first eccentric orfice are interior by the way that sequentially connected inlet valve bullet is arranged
Spring abutment, oil inlet valve spring and inlet valve steel ball are contacted with fuel feed hole and oil inlet valve spring retainer connect to form oil inlet control with accumulator
Structure processed, in second eccentric orfice by be arranged sequentially connected oil outlet valve spring seat, oil outlet valve spring, delivery valve steel ball with
Oil outlet contacts and oil outlet valve spring seat connect to form fuel-displaced control structure with accumulator, the oil outlet and the second eccentric orfice
The opposite other end of connecting pin is connected to plunger matching parts cavity, first eccentric orfice by through two logical oil valve seats through-hole with
The connection of plunger matching parts cavity, second eccentric orfice are connected to the pressure accumulation chamber of accumulator.
Preferably, the fuel feed hole include aperture be equipped with inner conical surface for contact with inlet valve steel ball vertical core and with erect
The cross-drilled hole of hole vertical connection is provided with concave inward structure at fuel feed hole on two logical oil valve seat end face, and the aperture of the through-hole is set
It is placed on concave inward structure.
Preferably, the through-hole be the orifice center of two and two through-holes and the orifice center of fuel feed hole be located at it is same
On straight line and with respect to central symmetry.
Preferably, the spring base oil outlet through oil outlet valve spring seat, the bullet are provided on the oil outlet valve spring seat
Spring abutment oil outlet is connected to one second eccentric orfice oil outlet one end, and the second eccentric orfice oil outlet other end and pressure accumulation chamber connect
It is logical.
Preferably, the accumulator and two logical oil valve seats are attached positioning by two positioning pins, on the accumulator
It is provided with the third eccentric orfice and the 4th eccentric orfice for positioning pin installation, is provided on the two logical oil valve seat for positioning pin
The 5th eccentric orfice and the 6th eccentric orfice of installation, the third eccentric orfice and the 4th eccentric orfice and the 5th eccentric orfice and the 6th bias
Hole corresponds.
Preferably, in the end face of the orifice center of the third eccentric orfice and the orifice center of the 4th eccentric orfice and accumulator
The heart is located along the same line and opposite central symmetry.
Preferably, the end of the orifice center of the 5th eccentric orfice and the orifice center of the 6th eccentric orfice and two logical oil valve seats
Face center is located along the same line and opposite central symmetry.
Preferably, one end that the oil outlet is contacted with delivery valve steel ball is provided with inner conical surface.
Preferably, the outside of the accumulator is provided in annular groove and annular groove and is provided with O-ring.
Preferably, the hydrostatic sensor for being detected to pressure accumulation cavity pressure is provided on the accumulator.
Compared with prior art, the present invention the beneficial effect is that:
Cooperated in the present invention by setting accumulator and two logical oil valve seats, so that overall structure is reliable, installation side
Just, it can be effectively reduced production and application cost, improve reliability.Make repairing replacement conveniently through the invention, be convenient for
Failure is checked, improves and produces and uses efficiency.Oil valve is general in the present invention can reduce production cost, so that fault mode is more
Controllably.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the invention；
Fig. 2 is accumulator and two logical oil valve seat attachment structure schematic diagrams in the present invention；
Fig. 3 is the present invention looks up structural representation of accumulator in the present invention；
Fig. 4 is the overlooking structure diagram of two logical oil valve seats in the present invention；
Fig. 5 is scheme of installation of the invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figs. 1-5, the present invention provides a kind of high-pressure fuel-feed pump pump head components, including are fixed on high-pressure fuel-feed pump
Accumulator 5 in the pump housing further includes that one end connect with accumulator 5 and connect at the top of the other end and high-pressure fuel-feed pump plunger matching parts
Two logical oil valve seats 1, fuel feed hole 17 and oil outlet 20 are provided on two logical oil valve seats 1, accumulator 5 is provided with and fuel feed hole 17 connects
The first logical eccentric orfice 16 and the second eccentric orfice 15 being connected to oil outlet 20 are sequentially connected in first eccentric orfice 16 by setting
Oil inlet valve spring retainer 4, oil inlet valve spring 3 and inlet valve steel ball 2 contacted with fuel feed hole 17 and oil inlet valve spring retainer 4 and pressure accumulation
The connection of device 5 forms oil inlet control structure, passes through the sequentially connected oil outlet valve spring seat 6 of setting, delivery valve in the second eccentric orfice 15
Spring 7, delivery valve steel ball 8 are contacted with oil outlet 20 and oil outlet valve spring seat 6 connect to form fuel-displaced control knot with accumulator 5
Structure, oil outlet 20 are connected to the opposite other end of 15 connecting pin of the second eccentric orfice with plunger matching parts cavity, and the first eccentric orfice 16 is logical
The through-hole 19 crossed through two logical oil valve seats 1 is connected to plunger matching parts cavity, and the pressure accumulation chamber 22 of the second eccentric orfice 15 and accumulator 5 connects
It is logical.
Fuel feed hole 17 includes that aperture is equipped with the vertical core of inner conical surface for contacting with inlet valve steel ball 2 and vertical with vertical core connects
Logical cross-drilled hole is provided with concave inward structure 18 at fuel feed hole 17 on two logical 1 end faces of oil valve seat, and the aperture of through-hole 19 is set to indent knot
On structure 18.Through-hole 19 is that the orifice center of the orifice center and fuel feed hole 17 of two and two through-holes 19 is located along the same line
And opposite central symmetry.
One end that oil outlet 20 is contacted with delivery valve steel ball 8 is provided with inner conical surface.The outside of accumulator 5 is provided with annular groove simultaneously
And O-ring 10 is provided in annular groove.The hydrostatic sensor for being detected to 22 pressure of pressure accumulation chamber is provided on accumulator 5
23。
In the present embodiment, the diameter of inlet valve steel ball 2 is greater than the diameter of fuel feed hole 17 and the diameter shape of oil inlet valve spring 3
At in line check valve oil enveloping structure.The diameter of delivery valve steel ball 8 is greater than the diameter of oil outlet 20 and the diameter shape of oil outlet valve spring 7
At oil outlet one-way valve oil enveloping structure.Two logical 1 shapes of oil valve seat generally cylindrical structure, relatively before two logical oil valve seats be easy to plus
Work, craftsmanship is more preferable, is conducive to improve the qualification rate of the finished product.Diesel oil is transported to pressure accumulation chamber by two logical oil valve seats 1 and accumulator 5
22 process reduces use cost so that high-pressure oil pipe is reduced to one by two；Oil pipe connects sealing structure and is reduced by four
To two, is conducive to the leakproofness for improving fuel system, improves reliability.Hydrostatic sensor 23 leads to the oil pressure in pressure accumulation chamber 22
It crosses internal detecting element and is converted to electric signal, then common rail fuel combustion system control unit, control unit root are transferred to by harness
Demand according to diesel engine condition to oil pressure and oil mass exports electric signal to proportion magnetic valve, how much controls oil inlet quantity, store to adjust
Intracavitary pressure is pressed, whole process forms a closed-loop control.
In the present embodiment, two logical oil valve seats 1 on the connecting pin of accumulator 5, the orifice center of fuel feed hole 17 and fuel-displaced
The end face center of the orifice center in hole 20 and two logical oil valve seats 1 on the same line and forms central symmetry.
The spring base oil outlet through oil outlet valve spring seat 6, spring base oil outlet and one are provided on oil outlet valve spring seat 6
The connection of second eccentric orfice oil outlet, 21 one end, 21 other end of the second eccentric orfice oil outlet are connected to pressure accumulation chamber 22.Oil outlet valve spring
The spring base oil outlet of seat 6 makes diesel oil make overall structure smaller into the second eccentric orfice oil outlet 21.
Accumulator 5 and two logical oil valve seats 1 pass through two positioning pins 9 and are attached positioning, are provided on accumulator 5 for fixed
The third eccentric orfice 13 and the 4th eccentric orfice 14 that position pin 9 is installed are provided with the installed for positioning pin 9 on two logical oil valve seats 1
Five eccentric orfices 11 and the 6th eccentric orfice 12, third eccentric orfice 13 and the 4th eccentric orfice 14 and the 5th eccentric orfice 11 and the 6th eccentric orfice
12 correspond.The end face center of the orifice center of the orifice center of third eccentric orfice 13 and the 4th eccentric orfice 14 and accumulator 5
It is located along the same line and with respect to central symmetry.The orifice center of the orifice center of 5th eccentric orfice 11 and the 6th eccentric orfice 12 with
The end face center of two logical oil valve seats 1 is located along the same line and opposite central symmetry.Third eccentric orfice 13, the 4th eccentric orfice 14,
The aperture of 5th eccentric orfice 11 and the 6th eccentric orfice 12 is all the same.Accumulator 5 is fixed on high-pressure oil feed by installing fixed pin 24
It is fixed on the positioning in the pump pump housing.
In the present embodiment, when high-pressure oil feed pump work, plunger downlink, inlet valve steel ball 2 is influenced out by fuel feed hole oil pressure
It opens, diesel oil enters plunger matching parts cavity, plunger uplink, inlet valve steel from vertical through-hole 19 through concave inward structure 18 by fuel feed hole 17
Ball 2 closes the fuel feed hole 17 on two logical oil valve seats 1 under the action of oil inlet valve spring 3, as plunger matching parts cavity oil pressure is continuous
It increases, delivery valve steel ball 8 is opened, and oil is extruded, and diesel oil, which enters, carries out pressure store in the pressure accumulation chamber 22 of accumulator 5, simultaneously will
Pressure signal in pressure accumulation chamber 22 feeds back to common rail fuel combustion system control unit by hydrostatic sensor 23, that is, completes a job
Circulation.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to shape described herein
Formula should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be herein
In contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And what those skilled in the art were carried out changes
Dynamic and variation does not depart from the spirit and scope of the present invention, then all should be within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of high-pressure fuel-feed pump pump head component, including the accumulator (5) being fixed in the high-pressure fuel-feed pump pump housing, feature exists
In further including the two logical oil valves that one end connect with accumulator (5) and connect at the top of the other end and high-pressure fuel-feed pump plunger matching parts
Seat (1), is provided with fuel feed hole (17) and oil outlet (20) on the two logical oil valve seat (1), the accumulator (5) be provided with and into
The first eccentric orfice (16) of oilhole (17) connection and the second eccentric orfice (15) being connected to oil outlet (20), first eccentric orfice
(16) by the way that sequentially connected oil inlet valve spring retainer (4), oil inlet valve spring (3) and inlet valve steel ball (2) and fuel feed hole is arranged in
(17) it contacts and oil inlet valve spring retainer (4) connect to form oil inlet control structure with accumulator (5), second eccentric orfice (15)
It is interior to be connect by the way that sequentially connected oil outlet valve spring seat (6), oil outlet valve spring (7), delivery valve steel ball (8) is arranged with oil outlet (20)
It touches and oil outlet valve spring seat (6) connect to form fuel-displaced control structure with accumulator (5), the oil outlet (20) is eccentric with second
The opposite other end of hole (15) connecting pin is connected to plunger matching parts cavity, and first eccentric orfice (16) is by running through two logical oil valves
The through-hole (19) of seat (1) is connected to plunger matching parts cavity, and the pressure accumulation chamber (22) of second eccentric orfice (15) and accumulator (5) is even
It is logical.
2. a kind of high-pressure fuel-feed pump pump head component according to claim 1, which is characterized in that fuel feed hole (17) packet
It includes aperture and is equipped with the vertical core of inner conical surface for contacting with inlet valve steel ball (2) and the cross-drilled hole with vertical core vertical connection, described two
It is provided with concave inward structure (18) at fuel feed hole (17) on logical oil valve seat (1) end face, the aperture of the through-hole (19) is set to indent
In structure (18).
3. a kind of high-pressure fuel-feed pump pump head component according to claim 2, which is characterized in that the through-hole (19) is two
A and two through-holes (19) orifice center and the orifice center of fuel feed hole (17) are located along the same line and opposite center pair
Claim.
4. a kind of high-pressure fuel-feed pump pump head component according to claim 1, which is characterized in that the oil outlet valve spring seat
(6) the spring base oil outlet through oil outlet valve spring seat (6) is provided on, the spring base oil outlet goes out with one second eccentric orfice
The connection of oilhole (21) one end, the second eccentric orfice oil outlet (21) other end are connected to pressure accumulation chamber (22).
5. a kind of high-pressure fuel-feed pump pump head component according to claim 1, which is characterized in that the accumulator (5) with
Two logical oil valve seats (1) are attached positioning by two positioning pins (9), are provided on the accumulator (5) for positioning pin (9)
The third eccentric orfice (13) and the 4th eccentric orfice (14) of installation are provided on the two logical oil valve seat (1) and pacify for positioning pin (9)
The 5th eccentric orfice (11) and the 6th eccentric orfice (12) of dress, the third eccentric orfice (13) and the 4th eccentric orfice (14) are inclined with the 5th
Heart hole (11) and the 6th eccentric orfice (12) correspond.
6. a kind of high-pressure fuel-feed pump pump head component according to claim 5, which is characterized in that the third eccentric orfice
(13) orifice center and the orifice center of the 4th eccentric orfice (14) and the end face center of accumulator (5) be located along the same line and
Opposite central symmetry.
7. a kind of high-pressure fuel-feed pump pump head component according to claim 5, which is characterized in that the 5th eccentric orfice
(11) orifice center of orifice center and the 6th eccentric orfice (12) and the end face center of two logical oil valve seats (1) are located at same straight line
Upper and opposite central symmetry.
8. a kind of high-pressure fuel-feed pump pump head component according to claim 1, which is characterized in that the oil outlet (20) with
One end of delivery valve steel ball (8) contact is provided with inner conical surface.
9. a kind of high-pressure fuel-feed pump pump head component according to claim 1, which is characterized in that the accumulator (5)
Outside, which is provided in annular groove and annular groove, is provided with O-ring (10).
10. a kind of high-pressure fuel-feed pump pump head component according to claim 1, which is characterized in that on the accumulator (5)
It is provided with the hydrostatic sensor (23) for being detected to pressure accumulation chamber (22) pressure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019100903684 | 2019-01-30 | ||
| CN201910090368 | 2019-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109763925A true CN109763925A (en) | 2019-05-17 |
Family
ID=66459763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910229290.XA Pending CN109763925A (en) | 2019-01-30 | 2019-03-26 | A kind of high-pressure fuel-feed pump pump head component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109763925A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901386A (en) * | 2021-03-03 | 2021-06-04 | 上海钧风电控科技有限公司 | Oil valve plunger assembly and high-pressure oil pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952562A (en) * | 2016-06-18 | 2016-09-21 | 常州博瑞油泵油嘴有限公司 | Composite high-pressure common rail pump for single cylinder diesel engine |
| US20170082094A1 (en) * | 2015-09-18 | 2017-03-23 | Denso Corporation | Pump |
| CN109139321A (en) * | 2018-11-15 | 2019-01-04 | 珠海安瑾动力科技有限公司 | A kind of two logical oil valve components of high-pressure fuel-feed pump |
| CN109268179A (en) * | 2018-10-23 | 2019-01-25 | 思达耐精密机电（常熟）有限公司 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
| CN209761600U (en) * | 2019-01-30 | 2019-12-10 | 珠海安瑾动力科技有限公司 | pump head component for high-pressure oil supply pump |
-
2019
- 2019-03-26 CN CN201910229290.XA patent/CN109763925A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170082094A1 (en) * | 2015-09-18 | 2017-03-23 | Denso Corporation | Pump |
| CN105952562A (en) * | 2016-06-18 | 2016-09-21 | 常州博瑞油泵油嘴有限公司 | Composite high-pressure common rail pump for single cylinder diesel engine |
| CN109268179A (en) * | 2018-10-23 | 2019-01-25 | 思达耐精密机电（常熟）有限公司 | A kind of switch electromagnetic valve formula single cylinder common rail pump of the head with pressure accumulation chamber |
| CN109139321A (en) * | 2018-11-15 | 2019-01-04 | 珠海安瑾动力科技有限公司 | A kind of two logical oil valve components of high-pressure fuel-feed pump |
| CN209761600U (en) * | 2019-01-30 | 2019-12-10 | 珠海安瑾动力科技有限公司 | pump head component for high-pressure oil supply pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901386A (en) * | 2021-03-03 | 2021-06-04 | 上海钧风电控科技有限公司 | Oil valve plunger assembly and high-pressure oil pump |
| CN112901386B (en) * | 2021-03-03 | 2024-03-19 | 钧风电控科技(泰州)有限责任公司 | Oil valve plunger assembly and high-pressure oil pump |
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