CN208220945U - Big flow electromagnetic type injector - Google Patents
Big flow electromagnetic type injector Download PDFInfo
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- CN208220945U CN208220945U CN201820431434.0U CN201820431434U CN208220945U CN 208220945 U CN208220945 U CN 208220945U CN 201820431434 U CN201820431434 U CN 201820431434U CN 208220945 U CN208220945 U CN 208220945U
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- main shaft
- big flow
- sealed plunger
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Abstract
A kind of big flow electromagnetic type injector, it is related to a kind of injector, including electromagnetic circuit component, valve member, flow adjustment component and oil circuit component, electromagnetic circuit component includes main shaft, flux sleeve, electromagnetic coil, valve member includes spool, seal, valve seat, and it includes position-limiting tube, return spring that flow, which adjusts component,；The seal is sealed plunger, coaxial spool mounting hole and centre bore is equipped in sealed plunger, the bottom terminal ends connection of spool mounting hole and spool, the bottom end end face of sealed plunger is plane；Valve seat is equipped with the sealing plane matched with the bottom end end face of sealed plunger, which is equipped with turbulent chamber on position corresponding with the centre bore of sealed plunger, and spray-hole is equipped with around turbulent chamber.The utility model can get the metering range of big flow, and sealing performance is reliable, and the dynamic flow stability of fuel injector can be improved, and structure is simple, at low cost, use easy to spread.
Description
Technical field
The utility model relates to a kind of injector, especially a kind of big flow electromagnetic type injector.
Background technique
Big flow electromagnetic type injector such as pen type injector, the sealing structure of valve member generally use steel ball close
Envelope, but due to the limitation of pen type emitter construction size, electromagnetic force is extremely limited, if increasing valve by the gap for increasing valve
Area of passage, achieve the purpose that improve flow be infeasible；Another thinking is to increase overcurrent by increasing steel ball size
Area, but the back pressure area of valve is also increased simultaneously, because electromagnetic force is inadequate, do not increase the gap of valve, is not increased by production yet
Product flow.
In addition, it is generally fitted with return spring in main shaft, spool bore in existing electromagnetic type injector, it should
Return spring always has axial bending when being compressed, and causes to generate friction between return spring and main shaft and spool, from
And affect the dynamic flow stability and repeatability of fuel injector.
Summary of the invention
Technical problem to be solved by the utility model is: a kind of big flow electromagnetic type injector is provided, it is existing to solve
The shortcoming of flow can not be improved when existing for technology using steel ball sealing.
The technical solution for solving above-mentioned technical problem is: a kind of big flow electromagnetic type injector, including electromagnetic circuit group
Part, valve member, flow adjustment component and oil circuit component, the electromagnetic circuit component include main shaft, flux sleeve, electromagnetic wire
Circle, the valve member include spool, seal, valve seat, and flow adjustment component includes position-limiting tube, return spring, described
Seal is sealed plunger, is equipped with coaxial spool mounting hole and centre bore, the spool mounting hole and valve in sealed plunger
The bottom terminal ends of core connect, and the bottom end end face of sealed plunger is plane；The valve seat is equipped with the bottom end end face with sealed plunger
The sealing plane matched, the sealing plane are equipped with turbulent chamber on position corresponding with the centre bore of sealed plunger, and
Spray-hole is equipped with around turbulent chamber.
The further technical solution of the utility model is: the valve seat includes valve seat A and valve seat B, the top end of valve seat A
Face is the sealing plane, and valve seat A is connect with the lower end of valve seat B, and the upper end of valve seat B is connect with main shaft.
The further technical solution of the utility model is: the sealing plane of the bottom end end face of sealed plunger and valve seat A it
Between gap L be 0.05~0.2mm.
The further technical solution of the utility model is: the sealing plane of the bottom end end face of sealed plunger and valve seat A it
Between gap cross-sectional area be 1.5~2.5mm2。
The further technical solution of the utility model is: the main shaft includes main shaft body, countershaft, magnetic shield, main shaft
The upper end of ontology is connect with inlet nozzle, and the lower end of main shaft body is connect with by magnetic shield, is equipped with inside magnetic shield described
Spool, magnetic shield excircle are connect with countershaft, main shaft body, spool hole in the return spring is installed.
The further technical solution of the utility model is: the main shaft body is tubular body structure, the main shaft body
It is made of low magnetoresistance material.
The further technical solution of the utility model is: the countershaft excircle is equipped with for installing sealing ring
Seal groove, the countershaft are made of low magnetoresistance material.
The further technical solution of the utility model is made of: the magnetic shield uses high magnetoresistance material.
The further technical solution of the utility model is: the inner hole wall of main shaft body is in the position of corresponding installation return spring
The spring recessing groove I of annular is installed, the inner hole wall of spool allows in the spring that the position of corresponding installation return spring is equipped with annular
Position slot II.
The further technical solution of the utility model is: the groove depth phase of the spring recessing groove I, spring recessing groove II
Deng, and groove depth h=0.1~0.3mm.
Since using the above structure, the big flow electromagnetic valve type injector of the utility model compared with prior art, has
Below the utility model has the advantages that
1. the metering range of available big flow
Since the valve member of the utility model includes spool, seal, valve seat, wherein seal is sealed plunger, close
It seals and is equipped with coaxial spool mounting hole and centre bore in plunger, the bottom terminal ends of the spool mounting hole and spool connect, close
The bottom end end face for sealing plunger is plane；The valve seat is equipped with the sealing plane matched with the bottom end end face of sealed plunger, should
Sealing plane is equipped with turbulent chamber on position corresponding with the centre bore of sealed plunger, and injection is equipped with around turbulent chamber
Hole.Since ball sealing structure is changed to plane sealing structure by the valve member of the utility model, divided into plane sealing structure
It counts under identical back-pressure sealing area structure and gap, the via area of 2.5 times of ball sealing structures can be obtained, to can get
The metering range of big flow.
In addition, the main shaft of the utility model includes main shaft body, countershaft, magnetic shield, the upper end of main shaft body and inlet nozzle
Connection, the lower end of main shaft body connect with by magnetic shield, be equipped with inside magnetic shield described in spool, magnetic shield excircle and
Countershaft connection, main shaft body, spool hole in return spring is installed.And main shaft body, countershaft are all made of low magnetoresistance material
It is made, magnetic shield is made of high magnetoresistance material.It is that integrated main axle structure is changed to seperated main axle structure by the utility model,
Increase the magnetic shield using highly resistant material design, the effective magnetic resistance for increasing magnetic shielding structure, to increase main shaft and spool
Couples magnetic flux, improve the electromagnetic force acted on spool, can also increase the gap of spool and valve seat, further effectively
Improve the flow of injector.
2. high in machining efficiency, sealing performance is reliable
Since ball sealing structure is changed to plane sealing structure by the valve member of the utility model, sealing not only can be improved
Performance, and the processing technology of sealing element is greatly improved, it is i.e. processable using techniques such as conventional turning, grindings, add
Work is high-efficient, and sealing performance is reliable and stable.
3. the dynamic flow stability of fuel injector can be improved
In addition, the utility model prevents return spring and main shaft and spool from generating friction in order to avoid return spring bending,
It is equipped with the spring recessing groove I of annular in the position of corresponding installation return spring in the inner hole wall of main shaft body, in the inner hole of spool
Wall is equipped with the spring recessing groove II of annular in the position of corresponding installation return spring, so as to improve the dynamic flow of fuel injector
Stability and repeatability.
4. structure is simple
Relatively simple for structure, at low cost, the use easy to spread of the utility model.
In the following, in conjunction with the accompanying drawings and embodiments to the technical characteristic of the big flow electromagnetic valve type injector of the utility model make into
The explanation of one step.
Detailed description of the invention
Fig. 1: the structural schematic diagram of the big flow electromagnetic valve type injector of the utility model described in embodiment one,
Fig. 2: valve member structural schematic diagram (after amplification) described in embodiment one,
Fig. 3: the back pressure area schematic diagram (after amplification) of valve member described in embodiment one,
Fig. 4: the structural schematic diagram of the big flow electromagnetic valve type injector of the utility model described in embodiment two,
Fig. 5: the structural schematic diagram of split type main shaft described in embodiment two,
Fig. 6: the structural schematic diagram of the big flow electromagnetic valve type injector of the utility model described in embodiment three,
Fig. 7: the scheme of installation between split type main shaft, spool and return spring described in embodiment three,
Fig. 8: the structural schematic diagram of electromagnetic type injector in the prior art,
Fig. 9: the back pressure area schematic diagram of electromagnetic type injector valve door component in the prior art.
In above-mentioned attached drawing, each the reference numerals are as follows:
1- electromagnetic circuit component,
11- main shaft, 111- main shaft body, 1111- spring recessing groove I, 112- magnetic shield, 113- countershaft,
12- flux sleeve, 13- electromagnetic coil,
2- valve member,
21- spool, 211- spring recessing groove II,
22- sealed plunger, 221- spool mounting hole, 222- centre bore, the bottom end end face of 223- sealed plunger,
23- valve seat, 230- valve seat A, 2301- sealing plane, 23011- turbulent flow chamber, 23012- spray-hole, 231- valve seat B,
3- flow adjustment component, 31- position-limiting tube, 32- return spring,
4- oil circuit component.
Specific embodiment
Embodiment one:
It is a kind of big flow electromagnetic type injector, including electromagnetic circuit component 1, valve member 2, stream disclosed in Fig. 1
Amount adjustment component 3 and oil circuit component 4, the electromagnetic circuit component 1 includes main shaft 11, flux sleeve 12, electromagnetic coil 13, described
Valve member 2 include spool 21, seal, valve seat 23, flow adjust component 3 include position-limiting tube 31, return spring 32.Its
In:
In valve member 2, the seal is sealed plunger 22, is installed in sealed plunger 22 equipped with coaxial spool
Hole 221 and centre bore 222, the spool mounting hole 221 are connect with the bottom terminal ends of spool 21, the bottom end end face of sealed plunger
223 be plane (referring to fig. 2)；
The valve seat 23 includes valve seat A230 and valve seat B231, and the top end face of valve seat A230 is and sealed plunger 22
The sealing plane 2301 that bottom end end face matches, the sealing plane 2301 is in position corresponding with the centre bore 222 of sealed plunger
It sets and is equipped with turbulent chamber 23011, and be equipped with spray-hole 23012 around turbulent chamber 23011.Under valve seat A230 and valve seat B231
End connection, the upper end of valve seat B231 is connect with main shaft 11.
Gap L between the bottom end end face 223 of above-mentioned sealed plunger and the sealing plane 2301 of valve seat A230 is 0.1mm,
Back pressure area S is 10.02 mm2The sealing plane 2301 of (referring to Fig. 3), the bottom end end face 223 of sealed plunger and valve seat A230 it
Between gap cross-sectional area be 1.95mm2。
And in the prior art, sealing the gap between steel ball and the sealing surface of valve seat is 0.1mm, back pressure area S0For
9.82 mm2, the cross-sectional area for sealing gap between steel ball and the sealing surface of valve seat is 0.78mm2(referring to Fig. 8-Fig. 9).
From the above, it is designed under plane sealing structure under identical back-pressure sealing area structure and gap, 2.5 can be obtained
The via area of times ball sealing structure, to can get the metering range of big flow.
Embodiment two:
It is another big flow electromagnetic type injector disclosed in Fig. 4, basic structure is as in the first embodiment, include electricity
Magnetic loop component 1, valve member 2, flow adjustment component 3 and oil circuit component 4, the electromagnetic circuit component 1 include main shaft 11,
Flux sleeve 12, electromagnetic coil 13, the valve member 2 include spool 21, seal, valve seat 23, and flow adjustment component 3 includes
Position-limiting tube 31, return spring 32.Institute the difference is that:
In electromagnetic circuit component 1, the main shaft 11 is adopted a split structure (referring to Fig. 5), which includes master
Shaft body 111, countershaft 113, magnetic shield 112, main shaft body 111 are made of low magnetoresistance material, which is tubulose
Body structure, and the upper end of main shaft body 111 is connect with inlet nozzle, and the return spring is equipped in the hole of main shaft body 111
32, the lower end of main shaft body 111 is connect with by magnetic shield 112；The magnetic shield 112 is made of high magnetoresistance material, every
The spool 21 is installed, 112 excircle of magnetic shield is connect with countershaft 113 inside magnetosheath 112；The countershaft 113 uses
Low magnetoresistance material is made, and 113 excircle of countershaft is equipped with the seal groove for installing sealing ring.
The specific structure of the present embodiment two is as follows:
A kind of big flow electromagnetic type injector, including electromagnetic circuit component 1, valve member 2, flow adjust 3 and of component
Oil circuit component 4, the electromagnetic circuit component 1 include main shaft 11, flux sleeve 12, electromagnetic coil 13, and the valve member 2 wraps
Spool 21, seal, valve seat 23 are included, it includes position-limiting tube 31, return spring 32 that flow, which adjusts component 3,.Wherein:
In electromagnetic circuit component 1, the main shaft 11 includes main shaft body 111, countershaft 113, magnetic shield 112, main shaft
Ontology 111 is made of low magnetoresistance material, which is tubular body structure, and the upper end of main shaft body 111 and oil inlet
Mouth connection, is equipped with the return spring 32 in the hole of main shaft body 111, the lower end of main shaft body 111 and passes through magnetic shield
112 connections；The magnetic shield 112 is made of high magnetoresistance material, and the spool 21 is equipped with inside magnetic shield 112, every
112 excircle of magnetosheath is connect with countershaft 113；The countershaft 113 is made of low magnetoresistance material, and on 113 excircle of countershaft
Equipped with the seal groove for installing sealing ring.Above-mentioned high magnetoresistance material is O Shi body stainless steel series material；Low magnetoresistance material
For ferrite series material.
In valve member 2, the return spring 32 is installed in the hole of spool 21；
The seal is sealed plunger 22, is equipped with coaxial spool mounting hole 221 and centre bore in sealed plunger 22
222, the spool mounting hole 221 is connect with the bottom terminal ends of spool 21, and the bottom end end face 223 of sealed plunger is plane；
The valve seat 23 includes valve seat A230 and valve seat B231, and the top end face of valve seat A230 is and sealed plunger 22
The sealing plane 2301 that bottom end end face matches, the sealing plane 2301 is in position corresponding with the centre bore 222 of sealed plunger
It sets and is equipped with turbulent chamber 23011, and be equipped with spray-hole 23012 around turbulent chamber 23011.Under valve seat A230 and valve seat B231
End connection, the upper end of valve seat B231 is connect with main shaft 11.
Gap L between the bottom end end face 223 of above-mentioned sealed plunger and the sealing plane 2301 of valve seat A230 is 0.1mm,
Back pressure area S is 10.02 mm2, gap between the bottom end end face 223 of sealed plunger and the sealing plane 2301 of valve seat A230
Cross-sectional area is 1.95mm2。
Embodiment three (most preferred embodiment)
Disclosing in Fig. 6 is another big flow electromagnetic type injector, and basic structure is the same as embodiment two, institute's difference
Be: the inner hole wall of main shaft body 111 is equipped with the spring recessing groove I 1111 of annular in the position of corresponding installation return spring 32,
The inner hole wall of spool 21 is equipped with the spring recessing groove II 211 of annular in the position of corresponding installation return spring 32.
The specific structure of the present embodiment three is as follows:
A kind of big flow electromagnetic type injector, including electromagnetic circuit component 1, valve member 2, flow adjust 3 and of component
Oil circuit component 4, the electromagnetic circuit component 1 include main shaft 11, flux sleeve 12, electromagnetic coil 13, and the valve member 2 wraps
Spool 21, seal, valve seat 23 are included, it includes position-limiting tube 31, return spring 32 that flow, which adjusts component 3,.Wherein:
In electromagnetic circuit component 1, the main shaft 11 includes main shaft body 111, countershaft 113, magnetic shield 112, main shaft
Ontology 111 is made of low magnetoresistance material, which is tubular body structure, and the upper end of main shaft body 111 and oil inlet
Mouth connects, and the return spring 32 is equipped in the hole of main shaft body 111, and the inner hole wall of main shaft body 111 is pacified corresponding
The position for filling return spring 32 is equipped with the spring recessing groove I 1111 of annular, and groove depth h=0.2mm of the spring recessing groove I 1111 is main
The lower end of shaft body 111 is connect with by magnetic shield 112；The magnetic shield 112 is made of high magnetoresistance material, magnetic shield
The spool 21 is installed, 112 excircle of magnetic shield is connect with countershaft 113 inside 112；The countershaft 113 uses low magnetic
Resistance material is made, and 113 excircle of countershaft is equipped with the seal groove for installing sealing ring.Above-mentioned high magnetoresistance material is O Shi
Body stainless steel series material；Low magnetoresistance material is ferrite series material.
In valve member 2, the return spring 32 is installed, the inner hole wall of spool 21 is in correspondence in the hole of spool 21
The position for installing return spring 32 is equipped with the spring recessing groove II 211 of annular, and groove depth and the spring of the spring recessing groove II 211 allow
The groove depth of position slot I 1111 is equal, is h=0.2mm.
The seal is sealed plunger 22, is equipped with coaxial spool mounting hole 221 and centre bore in sealed plunger 22
222, the spool mounting hole 221 is connect with the bottom terminal ends of spool 21, and the bottom end end face 223 of sealed plunger is plane；
The valve seat 23 includes valve seat A230 and valve seat B231, and the top end face of valve seat A230 is and sealed plunger 22
The sealing plane 2301 that bottom end end face matches, the sealing plane 2301 is in position corresponding with the centre bore 222 of sealed plunger
It sets and is equipped with turbulent chamber 23011, and be equipped with spray-hole 23012 around turbulent chamber 23011.Under valve seat A230 and valve seat B231
End connection, the upper end of valve seat B231 is connect with main shaft 11.
Gap L between the bottom end end face 223 of above-mentioned sealed plunger and the sealing plane 2301 of valve seat A230 is 0.1mm,
Back pressure area S is 10.02 mm2, gap between the bottom end end face 223 of sealed plunger and the sealing plane 2301 of valve seat A230
Cross-sectional area is 1.95mm2。
And in the prior art, sealing the gap between steel ball and the sealing surface of valve seat is 0.1mm, back pressure area S0For
9.82 mm2, the cross-sectional area for sealing gap between steel ball and the sealing surface of valve seat is 0.78mm2(referring to Fig. 8-Fig. 9).
From the above, it is designed under plane sealing structure under identical back-pressure sealing area structure and gap, 2.5 can be obtained
The via area of times ball sealing structure, to can get the metering range of big flow.
As a kind of transformation of the present embodiment three, the groove depth h of the spring recessing groove I 1111, spring recessing groove II 211
Any value in=0.1~0.3mm.
As a kind of transformation of the present embodiment one to embodiment three, the bottom end end face 223 of sealed plunger and valve seat A230's
Gap L between sealing plane 2301 can be any value in 0.05~0.2mm, the bottom end end face 223 of sealed plunger and valve
The cross-sectional area in gap is 1.5~2.5mm between the sealing plane 2301 of seat A2302。
Claims (10)
1. a kind of big flow electromagnetic type injector, including electromagnetic circuit component (1), valve member (2), flow adjust component
(3) and oil circuit component (4), the electromagnetic circuit component (1) include main shaft (11), flux sleeve (12), electromagnetic coil (13), institute
The valve member (2) stated includes spool (21), seal, valve seat (23), and flow adjustment component (3) includes position-limiting tube (31), returns
Position spring (32), it is characterised in that: the seal is sealed plunger (22), is equipped with coaxial spool in sealed plunger (22)
Mounting hole (221) and centre bore (222), the spool mounting hole (221) are connect with the bottom terminal ends of spool (21), sealing column
The bottom end end face (223) of plug is plane；The valve seat (23) is close equipped with matching with the bottom end end face of sealed plunger (22)
It seals plane (2301), which is equipped with turbulent flow on position corresponding with the centre bore of sealed plunger (222)
Chamber (23011), and spray-hole (23012) are equipped with around turbulent chamber (23011).
2. big flow electromagnetic type injector according to claim 1, it is characterised in that: the valve seat (23) includes valve
Seat A(230) and valve seat B(231), valve seat A(230) top end face be the sealing plane (2301), the valve seat A(230)
Connect with the lower end of valve seat B(231), valve seat B(231) upper end connect with main shaft (11).
3. big flow electromagnetic type injector according to claim 2, it is characterised in that: the bottom end end face of sealed plunger
(223) and valve seat A(230) sealing plane (2301) between gap L be 0.05~0.2mm.
4. big flow electromagnetic type injector according to claim 3, it is characterised in that: the bottom end end face of sealed plunger
(223) and valve seat A(230) sealing plane (2301) between gap cross-sectional area be 1.5~2.5mm2。
5. big flow electromagnetic type injector according to claim 1, it is characterised in that: the main shaft (11) includes master
Shaft body (111), countershaft (113), magnetic shield (112), the upper end of main shaft body (111) are connect with inlet nozzle, main shaft body
(111) lower end is connect with by magnetic shield (112), and the spool (21), magnetic shield are equipped with inside magnetic shield (112)
(112) excircle is connect with countershaft (113), main shaft body (111), spool (21) hole in the return spring is installed
(32).
6. big flow electromagnetic type injector according to claim 5, it is characterised in that: the main shaft body (111)
For tubular body structure, which is made of low magnetoresistance material.
7. big flow electromagnetic type injector according to claim 5, it is characterised in that: described countershaft (113) outer circle
Week is equipped with the seal groove for installing sealing ring, which is made of low magnetoresistance material.
8. big flow electromagnetic type injector according to claim 5, it is characterised in that: the magnetic shield (112) is adopted
It is made of high magnetoresistance material.
9. big flow electromagnetic type injector according to claim 5, it is characterised in that: the inner hole of main shaft body (111)
Wall is equipped with the spring recessing groove I (1111) of annular in the position of corresponding installation return spring (32), and the inner hole wall of spool (21) exists
The position of corresponding installation return spring (32) is equipped with the spring recessing groove II (211) of annular.
10. big flow electromagnetic type injector according to claim 9, it is characterised in that: the spring recessing groove I
(1111), the groove depth of spring recessing groove II (211) is equal, and groove depth h=0.1~0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820431434.0U CN208220945U (en) | 2018-03-28 | 2018-03-28 | Big flow electromagnetic type injector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820431434.0U CN208220945U (en) | 2018-03-28 | 2018-03-28 | Big flow electromagnetic type injector |
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| Publication Number | Publication Date |
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| CN208220945U true CN208220945U (en) | 2018-12-11 |
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ID=64503708
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412651A (en) * | 2018-03-28 | 2018-08-17 | 柳州源创电喷技术有限公司 | Big flow electromagnetic type injector |
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2018
- 2018-03-28 CN CN201820431434.0U patent/CN208220945U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412651A (en) * | 2018-03-28 | 2018-08-17 | 柳州源创电喷技术有限公司 | Big flow electromagnetic type injector |
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