CN104131925B - High pressure common rail injector hat ball control valve - Google Patents
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- CN104131925B CN104131925B CN201410307823.9A CN201410307823A CN104131925B CN 104131925 B CN104131925 B CN 104131925B CN 201410307823 A CN201410307823 A CN 201410307823A CN 104131925 B CN104131925 B CN 104131925B
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Abstract
The present invention relates to a kind of high pressure common rail injector hat ball control valve, it includes armature, control-rod, valve body, ball seat, valve seat, the armature is arranged on the upper end of control-rod, valve body is arranged on valve seat, control-rod is extended in valve body through pilot hole, it also includes hat ball, hat ball is the hat spheroid with plane B, hat ball is arranged between control-rod and the fuel-displaced throttle orifice of valve seat and is preced with ball is close to the high accuracy conical surface of valve seat, the control-rod bottom is provided with downward opening groove structure, bottom surface in groove structure annular groove is plane A, the plane B and plane A for being preced with ball are brought into close contact.Low control valve difficulty of processing can be dropped it is an object of the invention to provide one kind, and improves the high pressure common rail injector hat ball control valve of its machining accuracy.The advantage of the invention is that：The annular groove design of groove structure bottom surface, is easy to the withdrawing of process tool；Compared to interior concave spherical surface, the plane A difficulty of processing in groove structure annular groove is low, and machining accuracy is high.
Description
Technical field
The invention belongs to electric control fuel system field, the high pressure in more particularly to a kind of diesel fuel injection system is total to
Rail injector hat ball control valve.
Background technology
Fig. 1 is existing high pressure common rail injector globe type of control valve structure (see CN200510086198.0), and it is by armature
1, control-rod 2, valve body 3, ball seat 4, steel ball 5 and valve seat 6 are constituted, and are machined with meter in hole 7 on valve seat 6, fuel-displaced throttle orifice 8,
The high accuracy conical surface 9, alignment pin 10.The oily grain 3-4 of Sheng, oil leak hole 3-5 are provided with valve body 3.It is fixed with oil injector body that alignment pin 10 is used for
Position, makes meter in hole 7 be connected with the high-pressure oil duct of oil injector body.
The high pressure fuel of 160-220MPa is up to due to control valve control, valve body 3, control-rod 2, the conical surface 9 are belonged to especially
High-precision part, processing request is very high, but domestic manufacturers are ground due to the high accuracy inner circle using import, and machining accuracy is
It is guaranteed.But the precision of the interior concave spherical surface of ball seat 4 is also very high, steel ball 5 can freely be rotated in interior concave spherical surface, the phase of ball seat 4
End face to controlling valve can be moved freely, so as to steel ball 5 and the centering of the conical surface 9.
The ball seat 4 of country's processing, because indent sphere size is small, high precision, machining accuracy does not reach requirement, and steel ball 5 is easy
Abrasion, simultaneously as steel ball 5 is rotated, the sealing surface contacted with the conical surface 9 can change, and make sealing unreliable, influence the confession of fuel injector
Oiliness energy.The import equipment price of concave spherical surface is too high in processing, and domestic general factory is beyond affordability.Current ball seat 4 all uses import
Part.
So considering from design, low control valve difficulty of processing is dropped, improve machining accuracy, domesticized as early as possible, to promote altogether
Fuel system puts into production, protection China environment, there is great significance.
The content of the invention
Low control valve difficulty of processing can be dropped it is an object of the invention to provide one kind, and improves the high pressure of its machining accuracy and be total to
Rail injector hat ball control valve.
The purpose of the present invention is achieved through the following technical solutions：A kind of high pressure common rail injector hat ball control valve, it includes
Armature, control-rod, valve body, ball seat, valve seat, the armature is arranged on the upper end of control-rod, and valve body is arranged on valve seat, control-rod
Extended in valve body through pilot hole, it also includes hat ball, and hat ball is the hat spheroid with plane B, and hat ball is arranged on control-rod
And the fuel-displaced throttle orifice of valve seat between and hat ball be close to the high accuracy conical surface of valve seat, the control-rod bottom is provided with opening down
Groove structure, the groove structure cross section is circular and groove structure axis and overlapping of axles in control-rod, in groove structure
Bottom surface be provided with the annular groove coaxial with the groove structure cross section center of circle, the outside diameter of the annular groove is transversal with groove structure
Face round diameter is identical, and the bottom surface in groove structure annular groove is plane A, and the plane B and plane A for being preced with ball are brought into close contact.
For than prior art, the advantage of the invention is that：
1. the annular groove design of groove structure bottom surface, is easy to the withdrawing of process tool.
2., compared to interior concave spherical surface, the plane A difficulty of processing in groove structure annular groove is low, and machining accuracy is high, it is to avoid
The hat ball being put into groove structure produces abrasion.
3. it is provided with hat ball in groove structure, plane B is machined with hat ball, plane B is fitted on plane A, hat ball can be
Moved relative to plane A in groove structure, make the sphere of hat ball can well under various operating modes with the conical surface on valve seat
Sealing.
4., compared to concave spherical surface and the fit system of steel ball, present invention hat ball and the sphere of taper-face contact on valve seat are fixed
, it is to avoid because steel ball is rotated, steel ball is changed with the sealing surface of taper-face contact, seal whole device unreliable, while hat
The sphere of ball is basically unchanged with taper-face contact face, and the abrasion of the sphere and taper-face contact face of being preced with ball can improve high pressure sealing on the contrary
Property.
Brief description of the drawings
Fig. 1 is existing globe type of control valve structure chart.
Fig. 2 is the structural representation that a kind of high pressure common rail injector hat ball of the invention controls valve embodiment.
Fig. 3 is the structural representation of flat bottomed recess in Fig. 2.
Fig. 4 is the structural representation of hat ball in Fig. 2.
Fig. 5 is the control-rod structural representation that second high pressure common rail injector hat ball of the invention controls valve embodiment.
Fig. 6 is enlarged drawing at A in Fig. 5.
Fig. 7 is the control-rod structural representation that the third high pressure common rail injector hat ball of the invention controls valve embodiment.
Fig. 8 is enlarged drawing at B in Fig. 7.
Fig. 9 is the structural representation of the fuel injector for being provided with high pressure common rail injector hat ball control valve provided by the present invention
Figure.
Label declaration：
1 armature,
2 control-rods, 2-1 planes A, 2-2 groove, 2-3 boss, 2-4 boss plane, 2-5 endoporus, 2-6 annular grooves,
3 valve bodies, 3-1 valve bodies end face, 3-2 pilot holes, 3-3 transverse planes, 3-4 contain oily grain, 3-5 oil leak holes, 3-6 inner faces,
3-7 drainings are poor, 3-8 positions endoporus,
4 ball seats, 4-1 concave spherical surfaces,
5 steel balls, 5-1 planes B, 5-2 hat ball,
Plane on 6 valve seats, 6-1 valve seats, 6-2 positioning be cylindrical,
7 meter in holes, 8 fuel-displaced throttle orifices, 9 conical surfaces, 10 alignment pins, 11 ring sets,
12 sell, 12-1 sells transverse plane,
13 screw threads,
101 electromagnet swivel nuts, 102 electromagnet, 103 control valves, 104 oil injector body interior sealing planes, 105 oil injector bodies,
106 sealed ball seats, 107 control valve elements, 108 control valve pockets, 109 springs, 110 nozzle valve seats, 111 nozzle cap nuts, 112 are entered
Oily throttle orifice ', 113 high pressure oil-feed screws, 114 control oil pockets, 115 adjust pads, the 116 valve seat conical surfaces, the 117 valve element conical surfaces, 118
Spill port.
Specific embodiment
Present invention is described in detail with reference to Figure of description and embodiment：
Embodiment 1：
A kind of embodiment of high pressure common rail injector hat ball control valve for being provided for the present invention as shown in Figure 2 and Figure 4 is illustrated
Figure, it includes armature 1, and control-rod 2, valve body 3, ball seat 4, valve seat 6, the armature 1 is arranged on the upper end of control-rod 2, and valve body 3 sets
Put on valve seat 6, control-rod 2 is extended in valve body 3 through pilot hole 3-2, it also includes that hat ball 5-2, hat ball 5-2 are with flat
The hat spheroid of face B5-1, hat ball 5-2 is arranged between control-rod 2 and the fuel-displaced throttle orifice 8 of valve seat 6 and is preced with ball 5-2 and is close to valve seat 6
The high accuracy conical surface 9, the bottom of the control-rod 2 is provided with downward opening groove structure, and the groove structure cross section is circle
Shape and groove structure axis and overlapping of axles in control-rod 2, are provided with same with the groove structure cross section center of circle in the bottom surface of groove structure
The outside diameter of the annular groove 2-6, the annular groove 2-6 of axle is identical with groove structure cross section round diameter, groove structure ring
Bottom surface in shape groove 2-6 is plane A2-1, and the plane B5-1 and plane A2-1 of hat ball 5-2 are brought into close contact.
The annular groove design of groove structure bottom surface, is easy to process tool withdrawing.
The groove structure is the groove 2-2 that the lower surface of control-rod 2 is provided with.
The fit system of traditional concave spherical surface 4-1 and steel ball 5, can be very under various operating modes in order to reach steel ball 5 and the conical surface 9
Good centering sealing, is utilized in the end face of control-rod 2 and sets the ball seat 4 that can move freely, and concave spherical surface 4-1 is on ball seat 4.This
Invention eliminates ball seat 4, and a groove 2-2 is processed on control-rod 2, and the groove 2-2 inner bottom surfaces are plane A2-1, compared to
Interior concave spherical surface 4-1, plane machining difficulty is low, and machining accuracy is high；The hat ball 5-2 for coordinating plane A2-1 is provided with groove 2-2, ball is preced with
Plane B5-1 is machined with 5-2, plane B5-1 is fitted on plane A2-1, hat ball 5-2 can be in groove 2-2 with respect to plane
A2-1 translations are dynamic, make the sphere of hat ball 5-2 can well to middle sealing under various operating modes with the conical surface 9 on valve seat 6.
Using concave spherical surface 4-1 and the fit system of steel ball 5, steel ball 5 can arbitrarily be rotated in concave spherical surface 4-1, cause steel ball 5
Any sphere contacts friction with concave spherical surface 4-1, if concave spherical surface 4-1 machining accuracies do not reach requirement, steel ball 5 is easy for abrasion.
Additionally, steel ball 5 is rotated, the sealing surface contacted with the conical surface 9 can change, and make sealing unreliable, influence the oil supply performance of fuel injector.This
It is the fit system of the groove 2-2 and hat ball 5-2 of plane that invention uses inner bottom surface, on groove 2-2 inner planes A2-1 and hat ball 5-2
Plane B5-1 machining accuracies are high, above-mentioned two plane contact is worn and torn less, meanwhile, contacted with the valve seat conical surface 9 on hat ball 5-2
Sphere is fixed, makes whole device sealed reliable.
The sphere of hat ball 5-2 is basically unchanged with the contact surface of the conical surface 9, and the sphere of hat ball 5-2 is anti-with the abrasion of the contact surface of the conical surface 9
And high-pressure tightness can be improved.
Groove structure cross section is circular with diameter greater than hat ball 5-2 diameter 0.05-0.5mm, residing at groove structure opening
End face to the vertical range of plane A2-1 is extremely preced with the ball 5-2 centre ofs sphere more than the plane B5-1 centers of circle apart from 0.2-0.5mm.
Embodiment 2：
A kind of embodiment of high pressure common rail injector hat ball control valve for being provided for the present invention as shown in Figure 5 and Figure 6 is illustrated
Figure, it includes armature 1, and control-rod 2, valve body 3, ball seat 4, valve seat 6, the armature 1 is arranged on the upper end of control-rod 2, and valve body 3 sets
Put on valve seat 6, control-rod 2 is extended in valve body 3 through pilot hole 3-2, it also includes that hat ball 5-2, hat ball 5-2 are with flat
The hat spheroid of face B5-1, hat ball 5-2 is arranged between control-rod 2 and the fuel-displaced throttle orifice 8 of valve seat 6 and is preced with ball 5-2 and is close to valve seat 6
The high accuracy conical surface 9, the bottom of the control-rod 2 is provided with downward opening groove structure, and the groove structure cross section is circle
Shape and groove structure axis and overlapping of axles in control-rod 2, are provided with same with the groove structure cross section center of circle in the bottom surface of groove structure
The outside diameter of the annular groove 2-6, the annular groove 2-6 of axle is identical with groove structure cross section round diameter, groove structure ring
Bottom surface in shape groove 2-6 is plane A2-1, and the plane B5-1 and plane A2-1 of hat ball 5-2 are brought into close contact.
It also includes the ring set 11 of cylindrical boss 2-3 and height more than boss 2-3, and described boss 2-3 is located at control
The lower surface of bar 2, the axis of boss 2-3 and the middle overlapping of axles of control-rod 2, the inner hole diameter of ring set 11 are equal to the straight of boss 2-3
Footpath and ring set 11 are sheathed on boss 2-3 peripheries, and the groove structure is internal holes and boss of the ring set 11 beyond boss 2-3 parts
The groove 2-2 that plane 2-4 is formed.
Groove 2-2 is resolved into boss 2-3 and ring set 11, boss plane 2-4 is groove 2-2 inner plane A2-1, it is convenient
The processing of high precision plane, compared to plane is directly processed in groove 2-2, difficulty of processing is substantially reduced.
Groove structure cross section is circular with diameter greater than hat ball 5-2 diameter 0.05-0.5mm, residing at groove structure opening
End face to the vertical range of plane A2-1 is extremely preced with the ball 5-2 centre ofs sphere more than the plane B5-1 centers of circle apart from 0.2-0.5mm.
Embodiment 3：
A kind of embodiment of high pressure common rail injector hat ball control valve for being provided for the present invention as shown in Figure 7 and Figure 8 is illustrated
Figure, it includes armature 1, and control-rod 2, valve body 3, ball seat 4, valve seat 6, the armature 1 is arranged on the upper end of control-rod 2, and valve body 3 sets
Put on valve seat 6, control-rod 2 is extended in valve body 3 through pilot hole 3-2, it also includes that hat ball 5-2, hat ball 5-2 are with flat
The hat spheroid of face B5-1, hat ball 5-2 is arranged between control-rod 2 and the fuel-displaced throttle orifice 8 of valve seat 6 and is preced with ball 5-2 and is close to valve seat 6
The high accuracy conical surface 9, the bottom of the control-rod 2 is provided with downward opening groove structure, and the groove structure cross section is circle
Shape and groove structure axis and overlapping of axles in control-rod 2, are provided with same with the groove structure cross section center of circle in the bottom surface of groove structure
The outside diameter of the annular groove 2-6, the annular groove 2-6 of axle is identical with groove structure cross section round diameter, groove structure ring
Bottom surface in shape groove 2-6 is plane A2-1, and the plane B5-1 and plane A2-1 of hat ball 5-2 are brought into close contact.
It also includes the pin 12 of endoporus 2-5 and length less than endoporus 2-5 depth, and the described insertion endoporus of pin 12 2-5 is most deep
The outline of place and pin 12 is matched with endoporus 2-5 by the Internal periphery at the filling of pin 12, described groove structure for endoporus 2-5 not
The groove 2-2 that the space filled by pin 12 is formed with pin transverse plane 12-1.
Groove 2-2 is resolved into endoporus 2-5 and pin 12, pin transverse plane 12-1 is groove 2-2 inner plane A2-1, convenient high
The processing of precision face, compared to plane is directly processed in groove 2-2, difficulty of processing is substantially reduced.
Groove structure cross section is circular with diameter greater than hat ball 5-2 diameter 0.05-0.5mm, residing at groove structure opening
End face to the vertical range of plane A2-1 is extremely preced with the ball 5-2 centre ofs sphere more than the plane B5-1 centers of circle apart from 0.2-0.5mm.
Fig. 9 is the structure and operation principle that hat ball control valve of the invention is arranged in common-rail injector.Control valve 103 is straight
Connect and be screwed in oil injector body 105, transverse plane 3-3 is pressed in the interior sealing plane 104 of unhardened oil injector body 105, form high pressure
Sealing.Be arranged on oil injector body 105 for electromagnet 102, adjust pad 115 by electromagnet swivel nut 101.
Equipped with sealed ball seat 106 ' 112 that have meter in hole, control valve element 107, control valve pocket above in oil injector body 105
108th, return spring 109.Be pressed in nozzle valve seat 110 on oil injector body 105 by nozzle cap nut 111.Control the valve of valve element 107
The seat conical surface 116 is pressed on the valve element conical surface 117 of nozzle valve seat 110 under the effect of return spring 109.
During 102 no power of electromagnet, high pressure fuel enters in oil injector body 105 from high pressure oil-feed screw 113, through oil-feed section
Discharge orifice ' 112 enter in control oil pocket 114, and hat ball 5-2 is closed, and controls the valve seat conical surface 116 of valve element 107, in high pressure fuel and return
Position spring 109 is pressed on the valve element conical surface 117 of nozzle valve seat 110 under acting on, fuel injector not oil spout.
When electromagnet 102 is powered, electromagnet 102 sucts armature 1, and hat ball 5-2 is opened, the high pressure in control oil pocket 114
Fuel oil flows into low pressure and contains oil grain 3-4 by oil leak hole 3-5, and fuel tank is returned to through spill port 118.The control fuel pressure of oil pocket 114
Decline, act on the pressure on control valve element 107 bottom, overcome the pressure of return spring 109, make the valve seat of control valve element 107
The conical surface 116 leaves the valve element conical surface 117, fuel injector oil spout.
Claims (5)
1. a kind of high pressure common rail injector hat ball controls valve, and it includes armature (1), control-rod (2), valve body (3), ball seat (4), valve
Seat (6), the armature (1) be arranged on the upper end of control-rod (2), and valve body (3) is arranged on valve seat (6), and control-rod (2) is through leading
Extended in valve body (3) to hole (3-2), it is characterised in that：It also includes hat ball (5-2), and hat ball (5-2) is with plane B (5-
1) hat spheroid, hat ball (5-2) is arranged between control-rod (2) and the fuel-displaced throttle orifice (8) of valve seat (6) and is preced with ball (5-2) tightly
The high accuracy conical surface (9) of patch valve seat (6), control-rod (2) bottom is provided with downward opening groove structure, the groove knot
Structure cross section is circular and groove structure axis and overlapping of axles in control-rod (2), is provided with and groove knot in the bottom surface of groove structure
The coaxial annular groove (2-6) in the structure cross section center of circle, the outside diameter of the annular groove (2-6) is circular with groove structure cross section straight
Footpath is identical, and the bottom surface in groove structure annular groove (2-6) is plane A (2-1), the plane B (5-1) and plane A of hat ball (5-2)
(2-1) is brought into close contact.
2. high pressure common rail injector hat ball according to claim 1 controls valve, it is characterised in that：The groove structure is control
The groove (2-2) that bar (2) lower surface processed is provided with.
3. high pressure common rail injector hat ball according to claim 1 controls valve, it is characterised in that：It also includes circular cylindrical projection
Platform (2-3) and height are more than the ring set (11) of boss (2-3), and described boss (2-3) is located at control-rod (2) lower surface, boss
The axis of (2-3) and the middle overlapping of axles of control-rod (2), the inner hole diameter of ring set (11) are equal to the diameter and ring of boss (2-3)
Set (11) be sheathed on boss (2-3) periphery, the groove structure be ring set (11) beyond boss (2-3) part internal holes with it is convex
The groove (2-2) that platform plane (2-4) is formed.
4. high pressure common rail injector hat ball according to claim 1 controls valve, it is characterised in that：It also includes endoporus (2-
5) pin (12) with length less than endoporus (2-5) depth, described pin (12) inserts endoporus (2-5) bosom and sells the outer of (12)
Profile is matched with endoporus (2-5) by the Internal periphery at pin (12) filling, and described groove structure is endoporus (2-5) not by pin
(12) groove (2-2) that the space of filling is formed with pin transverse plane (12-1).
5. the high pressure common rail injector hat ball according to claim 1-4 any one controls valve, it is characterised in that：Groove knot
Structure cross section is circular with diameter greater than hat ball (5-2) diameter 0.05-0.5mm, the end face residing at groove structure opening to plane A
The vertical range of (2-1) is more than plane B (5-1) centers of circle to being preced with ball (5-2) centre of sphere apart from 0.2-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410307823.9A CN104131925B (en) | 2014-06-30 | 2014-06-30 | High pressure common rail injector hat ball control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410307823.9A CN104131925B (en) | 2014-06-30 | 2014-06-30 | High pressure common rail injector hat ball control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104131925A CN104131925A (en) | 2014-11-05 |
| CN104131925B true CN104131925B (en) | 2017-05-31 |
Family
ID=51804738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410307823.9A Active CN104131925B (en) | 2014-06-30 | 2014-06-30 | High pressure common rail injector hat ball control valve |
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| Country | Link |
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| CN (1) | CN104131925B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04124461A (en) * | 1990-09-14 | 1992-04-24 | Hitachi Ltd | Solenoid type fuel injection valve |
| CN2186307Y (en) * | 1993-11-20 | 1994-12-28 | 王永堂 | Needle valve couple-piece of injector |
| CN1773098A (en) * | 2005-07-25 | 2006-05-17 | 无锡油泵油嘴研究所 | Co-rail oil injection system electric control oil injector |
| WO2009121646A1 (en) * | 2008-04-01 | 2009-10-08 | Robert Bosch Gmbh | Solenoid valve with multiple-part armature without armature guide |
| CN203939610U (en) * | 2014-06-30 | 2014-11-12 | 福建省莆田市中涵机动力有限公司 | High pressure common rail injector hat ball control valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007170183A (en) * | 2005-12-19 | 2007-07-05 | Nikki Co Ltd | Electromagnetic fuel injection valve |
-
2014
- 2014-06-30 CN CN201410307823.9A patent/CN104131925B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04124461A (en) * | 1990-09-14 | 1992-04-24 | Hitachi Ltd | Solenoid type fuel injection valve |
| CN2186307Y (en) * | 1993-11-20 | 1994-12-28 | 王永堂 | Needle valve couple-piece of injector |
| CN1773098A (en) * | 2005-07-25 | 2006-05-17 | 无锡油泵油嘴研究所 | Co-rail oil injection system electric control oil injector |
| WO2009121646A1 (en) * | 2008-04-01 | 2009-10-08 | Robert Bosch Gmbh | Solenoid valve with multiple-part armature without armature guide |
| CN203939610U (en) * | 2014-06-30 | 2014-11-12 | 福建省莆田市中涵机动力有限公司 | High pressure common rail injector hat ball control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104131925A (en) | 2014-11-05 |
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Effective date of registration: 20170503 Address after: 351117 Putian hi tech Industrial Park, the south side of the Harbor Road, Fujian Applicant after: PUTIAN HONGYE PRECISION MACHINERY CO.,LTD. Address before: 351117 Putian high and New Technology Industrial Development Zone in Fujian (south side of the Harbor Road) Applicant before: FUJIAN PUTIAN CHINAHANJI POWER Co.,Ltd. |
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Effective date of registration: 20230328 Address after: 351100 Building 7, No. 8101, Lihan East Avenue, Jiangkou Town, Hanjiang District, Putian City, Fujian Province Patentee after: Putian Botai Power Equipment Co.,Ltd. Address before: 351117 south side of Hangang Road, Putian hi tech Industrial Park, Fujian Province Patentee before: PUTIAN HONGYE PRECISION MACHINERY CO.,LTD. |
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