CN207178082U - The common-rail injector fuel inlet fitting of carrying magnetic filter core - Google Patents
The common-rail injector fuel inlet fitting of carrying magnetic filter core Download PDFInfo
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- CN207178082U CN207178082U CN201721244609.9U CN201721244609U CN207178082U CN 207178082 U CN207178082 U CN 207178082U CN 201721244609 U CN201721244609 U CN 201721244609U CN 207178082 U CN207178082 U CN 207178082U
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- Prior art keywords
- filter core
- inlet fitting
- fuel inlet
- common
- magnetic
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Abstract
A kind of common-rail injector fuel inlet fitting of carrying magnetic filter core is the utility model is related to, it includes being arranged on fuel inlet fitting bolt, the filter core being plugged on fuel inlet fitting bolt bore and the protective case located at fuel inlet fitting bolt outer end of common-rail injector oil inlet end；The filter core is carrying magnetic filter core.The purpose of this utility model is to provide a kind of common-rail injector fuel inlet fitting of carrying magnetic filter core.The utility model has the advantage of：The utility model sets magnetic filter element, it can be made not enter back into fuel injector, ensure the normal work of fuel injector, and extend the service life of fuel injector by the small irony granular absorption in fuel oil around filter core.
Description
Technical field
Diesel fuel system field is the utility model is related to, particularly a kind of common-rail injector oil-feed of carrying magnetic filter core
Joint.
Background technology
Current domestic diesel engine for automobile mostly sprays system to reach the discharge standard of state four using Electrocontrolled high-pressure common rail fuel oil
System.
One side Electrocontrolled high-pressure common rail fuel injection system, injection pressure is in more than 160Mpa, in order to prevent fuel oil aerial drainage,
The gap-ratio hydraulic injection device of precision pair is much smaller, and the filtering to fuel oil requires especially high, is mixed into if any impurity in fuel injector
The premature abrasion of precision pair will be caused, fuel injector service life is reduced, can cause couple stuck when serious, cause diesel engine to be dashed forward
So it is stopped.
On the other hand, the high-speed electro-magnet of strength is installed, magnetic field intensity is very high, the abrasion of some ferrous elements in fuel injector
Under molecule (a diameter of μ levels) can not be filtered using in general filter element of precision filter, it, which is mixed in fuel oil, enters oil spout
In device, under strong-electromagnetic field effect, adsorb around electromagnet, form the powdered-iron bead of beard shape in the course of time, not only change magnetic
The line of force is distributed, and influences electromagnetism ferrum property, extends magnetic valve and opens and closes the time, while also results in electromagnet end face and armature
Surface premature abrasion.
The content of the invention
The purpose of this utility model is to provide a kind of common-rail injector fuel inlet fitting of carrying magnetic filter core.
The purpose of this utility model is achieved through the following technical solutions：A kind of common-rail injector oil-feed of carrying magnetic filter core connects
Head, it includes being arranged on fuel inlet fitting bolt, the filter core being plugged on fuel inlet fitting bolt bore of common-rail injector oil inlet end
And the protective case located at fuel inlet fitting bolt outer end；The filter core is carrying magnetic filter core.
For prior art, the utility model has the advantage of：The utility model sets magnetic filter element, can be by fuel oil
In small irony granular absorption around filter core, it is not entered back into fuel injector, ensure the normal work of fuel injector, and prolong
The service life of long fuel injector.
Brief description of the drawings
Fig. 1 is the structural representation of existing common-rail injector.
Fig. 2 is the structural representation of clearance filter.
Fig. 3 is A-A sectional views in Fig. 2.
Fig. 4 is B-B sectional views in Fig. 2.
Fig. 5 is C-C sectional views in Fig. 2.
Fig. 6 is a kind of structural representation of the common-rail injector fuel inlet fitting embodiment of carrying magnetic filter core of the utility model.
Fig. 7 is the structural representation of filter core in Fig. 6.
Fig. 8 is the structural representation of the common-rail injector fuel inlet fitting embodiment of another carrying magnetic filter core.
Fig. 9 is the structural representation of filter core in Fig. 8.
Figure 10 is the structural representation of magnetic adsorbing block.
Figure 11 is the structural representation of magnetic adsorbing block.
Label declaration：1 common-rail injector, 2 fuel inlet fitting bolts, 2-1 fuel inlet fittings bolt bore, 3 filter cores, 3-1 positioning
Hole, 3-2 boss, 3-3 bar groove A, 3-4 bar grooves B, 4 protective cases, 5 magnetic adsorbing blocks, 5-1 delivery chutes.
Embodiment
The utility model content is described in detail with reference to Figure of description and embodiment：
Fig. 1 is existing common-rail injector assembly.
Fig. 2 to 5 show the structure chart of existing clearance filter 3.The outside diameter at the both ends of filter core 3 is D1, its with
Fuel inlet fitting bolt bore 2-1 tight fits, the middle outside diameter of filter core 3 is D2, between D2 and fuel inlet fitting bolt bore 2-1
Gap is 0.02-0.05 millimeters.
The right-hand member of filter core 3 processes two bar groove A3-3, and bar groove A3-3 is cylindrical not across the left end of filter core 3 to the left；The left end of filter core 3
Two bar groove B3-4 are processed into 90 degree of directions with bar groove A3-3, bar groove B3-4 is cylindrical not across the right-hand member of filter core 3 to the right.
Into bar groove A3-3 fuel oil, can only by among filter core 3 it is cylindrical between fuel inlet fitting bolt bore 2-1 between
Gap could enter in bar groove B3-4.
Use above-mentioned clearance filter 3 can not filter diameter for 1-2 μ irony molecule, it, which is mixed in fuel oil, enters
In fuel injector, under strong-electromagnetic field effect, adsorb around electromagnet, form the powdered-iron bead of beard shape in the course of time, not only change
Variable magnetic force line is distributed, and influences electromagnetism ferrum property, extends magnetic valve and opens and closes the time, at the same also result in electromagnet end face and
Armature surface premature abrasion.
Studied and found according to technical staff, the electronic control common rail oil sprayer of many failures is caused by iron powder molecule, only
Take careful cleaning apart, reinstall can normal work, therefore the iron powder molecule that is mixed in fuel oil is filtered, prevents it from entering
Enter fuel injector, be one of important measures for ensureing fuel injector normal work.
Fig. 6 to 11 show a kind of implementation of the common-rail injector fuel inlet fitting of carrying magnetic filter core provided by the utility model
Illustrate and be intended to.
The utility model includes being arranged on the fuel inlet fitting bolt 2 of common-rail injector oil inlet end, is plugged on fuel inlet fitting spiral shell
Filter core 3 on bolt endoporus 2-1 and the protective case 4 located at the outer end of fuel inlet fitting bolt 2；The filter core 3 is carrying magnetic filter core 3.
Embodiment 1：
The filter core 3 is the filter core 3 by the magnetized tool permanent magnetism of high-intensity magnetic field.The structure of filter core 3 is using existing
Clearance filter 3 designs.
Filter core 3 uses No. 45 steel, and places it in high-intensity magnetic field and magnetize, and fuel oil will be by small irony by filter core 3
Grain absorption prevents it from entering in common-rail injector 1 around the filter core 3 with permanent magnetism, ensures the normal work of fuel injector.
In order to improve the ability that filter core 3 adsorbs small Ferrous particles, filter core 3 must use permanent-magnet material, and improve material
Remanent magnetism, it is desirable to material has high saturation magnetization, using such as aluminium nickel cobalt, siderochrome cobalt alloy or such as Smco and Nd-Fe-B
Rare earth permanent-magnetic material, it is desirable to lower that filter core is done using high-carbon steel.
Embodiment 2：
In order to retain the former structure and material of clearance filter 3 (generally No. 45 steel), while there are stronger magnetic property, this reality
Apply example and offered on the outer face of the oil-feed side of filter core 3 and/or fuel-displaced side and be provided with magnetic in positioning hole 3-1, the positioning hole 3-1
Attraction block 5.
Magnetic adsorbing block 5 is permanent-magnet steel.Magnetic steel material is Smco or Nd-Fe-B powder metallurgy.
The maximum outside diameter of magnetic adsorbing block 5 does not influence fuel oil from entering than the small 2-4 millimeters of fuel inlet fitting bolt bore 2-1 diameters
Hydraulic fluid port flows into bar groove A3-3 flow velocity.
If installing a permanent-magnet steel in one end of filter core 3, the polar orientation for considering permanent-magnet steel is not had to.
Both ends such as filter core 3 are equipped with permanent-magnet steel, then the anti-phase magnetic pole of two permanent-magnet steels is oppositely arranged, such as Fig. 6-7 institutes
Show.Now two permanent-magnet steels magnetize whole filter core 3, and it is more preferable to filter small irony particle effect.
The positioning hole 3-1 of the cylindrical and filter core 3 of permanent-magnet steel is interference fit.
During work, fuel oil enters the bar groove A3-3 of filter core from oil inlet, by cylindrical and fuel inlet fitting bolt among filter core 3
Endoporus 2-1 gap, bar groove B3-4 is flowed into, then by oil outlet, into common-rail injector 1.Small Ferrous particles in fuel oil
Adsorb around filter core 3 and permanent-magnet steel, no longer common-rail injector 1, ensure fuel injector normal work.
Embodiment 3：
The oil inlet end and/or oil outlet end of the filter core 3 are provided with magnetic adsorbing block 5；The magnetic adsorbing block 5 is movably arranged on
Fuel inlet fitting bolt bore 2-1, and its perisporium is provided with delivery chute 5-1.
Be provided with boss 3-2 in the middle part of the outer face of the oil-feed side of filter core 3 and/or fuel-displaced side, the boss 3-2 perisporiums with enter
Annular groove is formed between oily track bolt endoporus 2-1, the annular groove connects the transfer passage and magnetic adsorbing block on the perisporium of filter core 3
The delivery chute 5-1 of 5 perisporiums.
Boss 3-2 height is 1-3 millimeters, and the bottom footpath of boss 3-2 minor diameters and bar groove A3-3 and bar groove B3-4 is tangent,
So that bar groove A3-3 import section and bar groove B3-4 outlet are not blocked by boss 3-2, ensure the flow velocity of fuel oil.
The magnetic adsorbing block 5 is cylinder, and the diameter of the cylinder is equal to fuel inlet fitting bolt bore 2-1 diameters,
And the perisporium of cylinder is equipped with some delivery chute 5-1.Referring to Figure 10.
Or the section of the magnetic adsorbing block 5 is polygon (polygon on 3-6 sides), and maximum gauge of polygon etc.
In fuel inlet fitting bolt bore 2-1 diameters.Shape between face and fuel inlet fitting bolt bore 2-1 corresponding to the minor diameter of polygon
Into delivery chute 5-1.Referring to Figure 11.
The magnetic adsorbing block 5 is permanent-magnet steel.
The thickness of the permanent-magnet steel is 2-5 millimeters.
If installing a permanent-magnet steel in one end of filter core 3, the polar orientation for considering permanent-magnet steel is not had to.
Both ends such as filter core 3 are equipped with permanent-magnet steel, then the anti-phase magnetic pole of two permanent-magnet steels is oppositely arranged, such as Fig. 8-9 institutes
Show.
During work, fuel oil enters from oil inlet, by the delivery chute 5-1 on permanent-magnet steel, into boss 3-2 perisporiums and enters
The annular groove formed between oily track bolt endoporus 2-1, enters back into bar groove A3-3, by cylindrical and fuel inlet fitting spiral shell among filter core 3
Bolt endoporus 2-1 gap, bar groove B3-4 is flowed into, then oil outlet is entered by the delivery chute 5-1 on permanent-magnet steel, eventually entered into
Common-rail injector 1, the small irony granular absorption in fuel oil do not enter back into common-rail injector 1 around filter core 3 and permanent-magnet steel
It is interior, ensure fuel injector normal work.
Claims (10)
- A kind of 1. common-rail injector fuel inlet fitting of carrying magnetic filter core, it is characterised in that：It enters including being arranged on common-rail injector The fuel inlet fitting bolt (2) at oily end, the filter core (3) being plugged on fuel inlet fitting bolt bore (2-1) and located at fuel inlet fitting The protective case (4) of bolt (2) outer end；The filter core (3) is carrying magnetic filter core (3).
- 2. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 1, it is characterised in that：The filter core (3) it is by the magnetized filter core (3) for having permanent magnetism of high-intensity magnetic field.
- 3. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 1, it is characterised in that：The filter core (3) positioning hole (3-1) is offered on the outer face of oil-feed side and/or fuel-displaced side, magnetic absorption is provided with the positioning hole (3-1) Block (5).
- 4. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 1, it is characterised in that：The filter core (3) oil inlet end and/or oil outlet end is provided with magnetic adsorbing block (5)；The magnetic adsorbing block (5) is movably arranged on fuel inlet fitting spiral shell Bolt endoporus (2-1), and its perisporium is provided with delivery chute (5-1).
- 5. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 4, it is characterised in that：The filter core (3) boss (3-2), boss (3-2) perisporium and fuel inlet fitting bolt are provided with the middle part of the outer face of oil-feed side and/or fuel-displaced side Annular groove is formed between endoporus (2-1), the annular groove connects transfer passage and magnetic adsorbing block (5) week on filter core (3) perisporium The delivery chute (5-1) of wall.
- 6. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 5, it is characterised in that：The magnetic is inhaled Attached piece (5) are cylinder, and the diameter of the cylinder is equal to fuel inlet fitting bolt bore (2-1) diameter, and the perisporium of cylinder It is equipped with some delivery chutes (5-1).
- 7. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 5, it is characterised in that：The magnetic is inhaled The section of attached piece (5) is polygon, and the maximum gauge of polygon is equal to fuel inlet fitting bolt bore (2-1) diameter.
- 8. the common-rail injector fuel inlet fitting of the carrying magnetic filter core according to claim 3-7 any one, it is characterised in that： The magnetic adsorbing block (5) is permanent-magnet steel.
- 9. the common-rail injector fuel inlet fitting of carrying magnetic filter core according to claim 8, it is characterised in that：The permanent magnetic The thickness of steel is 2-5 millimeters.
- 10. the common-rail injector fuel inlet fitting of the carrying magnetic filter core according to claim 3-7 any one, its feature exist In：When filter core (3) both ends are equipped with magnetic adsorbing block (5), the anti-phase magnetic pole of two magnetic adsorbing blocks (5) is oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721244609.9U CN207178082U (en) | 2017-09-26 | 2017-09-26 | The common-rail injector fuel inlet fitting of carrying magnetic filter core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721244609.9U CN207178082U (en) | 2017-09-26 | 2017-09-26 | The common-rail injector fuel inlet fitting of carrying magnetic filter core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178082U true CN207178082U (en) | 2018-04-03 |
Family
ID=61748377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721244609.9U Active CN207178082U (en) | 2017-09-26 | 2017-09-26 | The common-rail injector fuel inlet fitting of carrying magnetic filter core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178082U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654326A (en) * | 2017-09-26 | 2018-02-02 | 莆田市宏业精密机械有限公司 | The common-rail injector fuel inlet fitting of carrying magnetic filter core |
-
2017
- 2017-09-26 CN CN201721244609.9U patent/CN207178082U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654326A (en) * | 2017-09-26 | 2018-02-02 | 莆田市宏业精密机械有限公司 | The common-rail injector fuel inlet fitting of carrying magnetic filter core |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230331 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. |