CN206845360U - Gasoline electric-controlled fuel injector - Google Patents
Gasoline electric-controlled fuel injector Download PDFInfo
- Publication number
- CN206845360U CN206845360U CN201720391040.2U CN201720391040U CN206845360U CN 206845360 U CN206845360 U CN 206845360U CN 201720391040 U CN201720391040 U CN 201720391040U CN 206845360 U CN206845360 U CN 206845360U
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- Prior art keywords
- component
- valve
- needle
- return spring
- seat
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- Expired - Fee Related
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- 239000000446 fuel Substances 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 description 21
- 239000007924 injection Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000649 photocoagulation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
It the utility model is related to a kind of gasoline electric-controlled fuel injector, injector assembly includes electromagnetism component, return spring, spring adjust pad, needle-valve component, Traffic control system pad, buffer spring, sealing ring, valve seat component, pressing plate and sealing ring, and the electromagnetism component, needle-valve component, valve seat component use modularized design；The stroke of movable member and the pretightning force of return spring are accurately adjustable, the needle-valve component is movable member, be limited between valve seat and fixed core, movable member stroke can be adjusted by Traffic control system pad, and by electromagnetism component, return spring co- controlling its move back and forth；The pretightning force of the return spring can be adjusted by spring adjust pad.Parts of the present utility model use modularized design, can flexibly adjust the size of the pretightning force of movable member stroke and return spring according to demand, and assemble, dismounting, adjustment it is all very simple and convenient.
Description
Technical field
It the utility model is related to the electromagnetic drive type electric-controlled fuel injector of gasoline direct injection engine.
Background technology
In recent ten years, by energy increasingly depleted, oil price is risen steadily, global warming and corresponding carbon dioxide are arranged
The puzzlement of surge is put, improving the fuel economy of engine on the premise of Abgasgesetz is met has become more and more urgent.Vapour
Oily in-cylinder direct-jet (GDI, Gasoline Direct Injection) engine combines compression ignition engine and started with spark ignition type
The advantages of machine, make engine in fuel economy or all show larger potentiality reducing discharge etc., also generation
The table developing direction of gasoline engine.
Since the nineties in last century, many motor corporations such as Mitsubishi, Toyota, Ford, masses, benz, BMW all develop
The GDI engine type of oneself is simultaneously introduced to the market, carry gasoline in-cylinder direct fuel-injection engine vehicle also have become represent it is major
Motor corporation's technical merit and the important weapon competed for market share；One of key technology of gasoline direct injection engine exploitation is exactly
The gasoline direct fuel system for meeting to require is provided, and the key technical problem for cracking GDI fuel injection systems is to obtain
Obtain the electric-controlled fuel injector accurately, reliably controlled.
Utility model content
The utility model provides a kind of gasoline of the pretightning force of the stroke for being easier to adjust movable member and return spring
The electromagnetic drive type electric-controlled fuel injector of direct fuel-injection engine, realizes the soft readjustment of fuel injector major parameter.
In order to solve the above problems, the utility model uses following scheme：
A kind of gasoline electric-controlled fuel injector, injector assembly include electromagnetism component, return spring, spring adjust pad, needle-valve
Component, Traffic control system pad, buffer spring, sealing ring, valve seat component, pressing plate and sealing ring, the electromagnetism component, needle-valve close
Part, valve seat component use modularized design；The stroke of movable member and the pretightning force of return spring are accurately adjustable, and the needle-valve closes
Part is movable member, is being limited between valve seat and fixed core, and movable member stroke can be adjusted by Traffic control system pad,
And by electromagnetism component, return spring co- controlling its move back and forth；The pretightning force of the return spring can be adjusted by spring
Whole pad is adjusted.
Further improvement as above-mentioned technical proposal：
The head of the needle-valve component is a sealing valve head, and the sealing valve head is with Needle shaft lower end contact position by swashing
Photocoagulation is integral, and the top insertion of the Needle shaft is provided with the buffer spring seat of honour, armature, return spring seat, the buffering
The spring seat of honour is fixed on Needle shaft with return spring seat by laser welding, and armature is by the buffer spring seat of honour and return spring seat
Defined position.
The return spring is by with a stepped hole in the fixed core in the middle part of through hole electromagnetism component and needle-valve component
Return spring seat limit its installation site so that needle-valve component is descending with valve body.
The spring adjust pad is close to the installation of return spring lower surface, or is installed on return spring and fixed core step
Between hole, it adjusts the pretightning force of return spring by different thickness.
The Traffic control system pad is installed on end face and the valve with one stepped hole in through hole electromagnetism component lower end
Between the upper surface of seat component, the row of the movable member needle-valve component can be adjusted using the Traffic control system pad of different-thickness
Journey.
The buffer spring is enclosed on Needle shaft, and is positioned by its seat of honour and lower seat.
The pressing plate is to carry the internal thread that adapter sleeve carries in externally threaded fastener, with the electromagnetism component to match
Close so that the valve body being made up of needle-valve component and valve seat component is connected in electromagnetism component.
Upper surface of the magnetic attachment gap by the needle-valve component top armature and one in the fixed core in the middle part of electromagnetism component
Gap between individual step surface is formed, and the gap length can be adjusted by Traffic control system pad.
Sealing valve head in the needle-valve component is U-shaped hollow structure, is distributed with several cross-drilled holes at an upper portion thereof, bottom it is oblique
Several inclined holes are distributed with face；The external seal anchor ring of one inverted cone-shaped is arranged along its center axis at the bottom of the sealing valve head.
The bottom of valve base cavity also has the interior sealing anchor ring along the inverted cone-shaped of its center axis, institute in the valve seat component
State interior sealing anchor ring and a circumferential seal line of the external seal annular face contacts formation along its center axis.
It is of the present utility model to have technical effect that：
Parts of the present utility model use modularized design, can flexibly adjust according to demand movable member stroke with
The size of the pretightning force of return spring, and assemble, dismounting, adjustment it is all very simple and convenient.The each component ratio of the utility model
It is more regular, simple；And laser welding and the installation form being threadedly coupled are used, be advantageous to manufacture and assemble.
Brief description of the drawings
Fig. 1：The utility model gasoline electric-controlled fuel injector overall structure sectional view；
Fig. 2：The sectional view of fuel injection valve opening；
Fig. 3：Electromagnetism component main frame structure and installation sectional view；
Fig. 4：Needle-valve component structure sectional view；
Fig. 5：Valve seat component structure sectional view；
Fig. 6：Needle-valve component is assembled to form fuel injection valve valve body structure process schematic with valve seat component；
Fig. 7：The structural representation of injection valve；
Fig. 8：The schematic diagram of injector assembly assembling scheme 1；
Fig. 9：The schematic diagram of injector assembly assembling scheme 2；
In figure：1st, electromagnetism component；10th, filter screen；11st, O-ring；12nd, back-up ring；13rd, plastic packaging；14th, fixed core；15th, electromagnetic shield；
16th, coil block；160th, external plug wire；161st, coil rack；162nd, coil winding；17th, magnetism-isolating loop；18th, adapter sleeve, 20, return
Position spring；21st, spring adjust pad；3rd, needle-valve component；30th, return spring seat；31st, armature；32nd, the buffer spring seat of honour；33rd, pin
Valve rod；34th, valve head is sealed；4th, Traffic control system pad；5th, buffer spring；6th, sealing ring；7th, valve seat component；70th, under buffer spring
Seat；71st, valve pocket；72nd, valve seat；8th, pressing plate；9th, sealing ring；
1A, the annular laser of connection fixed core 14 and magnetism-isolating loop 17 weld；1B, connection magnetism-isolating loop 17 and adapter sleeve 18 ring
Shape laser welding；1C, the annular laser of connection fixed core 14 and electromagnetic shield 15 weld；1D, connection electromagnetic shield 15 and adapter sleeve 18
Annular laser welding；3A, the annular laser of connection return spring base 30 and Needle shaft 33 weld；On 3B, connection buffer spring
The annular laser of seat 32 and Needle shaft 33 welds；3C, connection Needle shaft 33 weld with sealing the annular laser of valve head 34；7A, company
The annular laser for connecing seat 70 and valve pocket 71 under buffer spring welds；7B, the annular laser of connection valve pocket 71 and valve seat 72 weld；
MF, the magnetic line of force；δ, magnetic attachment gap (movable member stroke).
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
A kind of gasoline electric-controlled fuel injector is by electromagnetism component 1, return spring 20, spring adjust pad 21, needle-valve component 3, OK
Journey adjust pad 4, buffer spring 5, sealing ring 6, valve seat component 7, pressing plate 8 and sealing ring 9 form (referring to Fig. 1).
Electromagnetism component 1 by filter screen 10, O-ring 11, back-up ring 12, plastic packaging 13, fixed core 14, electromagnetic shield 15, coil block 16,
Magnetism-isolating loop 17 combines with adapter sleeve 18, and coil block 16 is by external plug wire 160, coil rack 161, coil winding
162 are collectively constituted, and wherein fixed core 14 is linked together group with magnetism-isolating loop 17 and adapter sleeve 18 by pad 1A and 1B respectively
This main frame structure is inserted in into the main frame structure of electromagnetism component 1, then coil block 16, electromagnetic shield 15 is then covered into line
Coil assembly 16, and cause axial groove 151 of the external plug wire 160 by electromagnetic shield 15, then by pad 1C and 1D by electromagnetism
Cover 15 links together with fixed core 14 and adapter sleeve 18 respectively；Plastic packaging processing is carried out on this basis, so as to form plastic packaging 13,
Filter screen 10 is embedded into the stepped hole 141 of the upper end of fixed core 14, and finally mounting O-shaped rings 11, back-up ring 12 (referring to Fig. 3, are schemed successively
8)。
Movable member needle-valve component 3 is by return spring seat 30, armature 31, the buffer spring seat of honour 32, Needle shaft 33, sealing valve
First 34 are combined, and wherein Needle shaft 33 is connected with sealing valve head 34 by pad 3C, then respectively the buffer spring seat of honour
32nd, armature 31, return spring seat 30 are sequentially sleeved in the top of Needle shaft 33, then by pad 3A and 3B respectively return bullet
Spring abutment 30 and the buffer spring seat of honour 32 link together with Needle shaft 33, and armature 31 is on return spring seat 30 and buffer spring
It is positioned (referring to Fig. 4) between seat 32.
Valve seat component 7 is made up of seat under buffer spring 70, valve pocket 71 and valve seat 72, and wherein seat 70 is embedded under buffer spring
Itself and valve pocket 71 are linked together in the stepped hole of the upper end surface of valve pocket 71, and by pad 7A；And the quilt of valve seat 72
It is embedded into the stepped hole at the lower surface of valve pocket 71, and itself and valve pocket 71 is linked together (referring to figure by pad 7B
5)。
Assembly method：
The fuel injection valve valve body structure is formed exactly needle-valve component 3, buffer spring 5 and valve seat component 7 are installed
Together, specific is exactly that first buffer spring 5 is sealed below needle-valve component 3 to be inserted at valve head 34, then needle-valve component 3
Inserted from the top of valve seat component 7, the sealing ring surface 344 until sealing valve head 34 is fitted in the close of valve seat 72 in valve seat component 7
On seal ring face 722, its sealing ring surface 344 and 722 is that a reversed cone angle is α respectively1And α2The external seal anchor ring of inverted cone-shaped and interior
Sealing ring surface, one is formed in joint place around a diameter of of the injector assembly central axisSeal line, as line
The fuel injection valve of the cone valve structure of sealing (referring to Fig. 6, Fig. 7).
Forming the injector assembly has two methods to reach：
First, on the basis of the fuel injection valve valve body structure is formed, sealing ring 6 is installed to valve seat component 7 first
In the annular groove 712 of middle valve pocket 71, then head on spring adjust pad 21 with the shoulder 301 of return spring seat 30 in needle-valve component 3 (can
The pretightning force of return spring 20 is adjusted to use different-thickness according to demand), spring adjust pad 21 heads on return spring 20
Lower surface, while the lower surface of Traffic control system pad 4 is headed on the upper surface 711 of valve pocket 71 in valve seat component 7, until return
Spring 2 is installed in electromagnetism component 1 in the stepped hole 142 in fixed core 14, upper surface and the electromagnetism component of Traffic control system pad 4
Step surface 181 in 1 in adapter sleeve 18 is bonded, and last pressing plate 8 is inserted in below the valve body structure, and its external screw thread 82
Match with the internal thread 182 in adapter sleeve 18 in electromagnetism component 1；Upper surface 81 and the plane 713 of valve pocket 71 when pressing plate 8
Fitting, at this moment it will form one between the upper surface 311 of armature 31 in the step hole face 143 in fixed core 14 and needle-valve component 3
Individual magnetic attachment gap delta, the as stroke of movable member, and this trip according to demand, and can pass through the row from different-thickness
Journey adjust pad 4 does appropriate adjustment, finally adds modeling sealing ring 9；The injector assembly assembling is finished (referring to Fig. 4, Fig. 5, figure
6th, Fig. 8).
2nd, on the basis of the fuel injection valve valve body structure is formed, sealing ring 6 is installed to valve seat component 7 first
In the annular groove 712 of middle valve pocket 71, then the stepped hole 142 return spring 20 being installed in electromagnetism component 1 respectively in fixed core 14
Interior, spring adjust pad 21 is also put into stepped hole 142, and is attached at the lower surface of return spring 20, and Traffic control system pad 4 is put
Enter into electromagnetism component 1, and an end face of Traffic control system pad 4 and the step surface 181 in adapter sleeve 18 in electromagnetism component 1
The valve body structure with sealing ring 6, is then inserted into electromagnetism component 1, until valve pocket 71 in valve seat component 7 by fitting
Upper surface 711 be bonded with another end face of Traffic control system pad 4, now in needle-valve component 3 return spring seat 30 shoulder
301 should head on the lower surface of spring adjust pad 21；Last pressing plate 8 is inserted in below the valve body structure, and outside it
Screw thread 82 matches with the internal thread 182 in adapter sleeve 18 in electromagnetism component 1；When the upper surface 81 of pressing plate 8 and putting down for valve pocket 71
Face 713 is bonded, at this moment will shape between the upper surface 311 of armature 31 in the step hole face 143 in fixed core 14 and needle-valve component 3
Into a magnetic attachment gap delta, finally add modeling sealing ring 9；As described second of assembly method of injector assembly is (referring to Fig. 4, figure
5th, Fig. 6, Fig. 9).
Operation principle：
Magnetic line of force MF around the center line coil assembly 16 of electromagnetism component 1 is mainly by fixed core 14, electromagnetic shield 15, connection
Set 18, the armature 31 in needle-valve component 3, magnetic attachment gap delta (movable member stroke)；In order that magnetic flux does not leak, by magnetic force
Line MF structure should be made up of the soft magnetic materials of low-coercivity, and nearby be installed in magnetic attachment gap delta (movable member stroke)
Magnetism-isolating loop 17, it is a kind of high magnetoresistance material, i.e. the magnetic line of force is difficult to by it, and magnetic attachment gap delta from the side of having to
By the way that this is it is prevented that the generation of leakage field phenomenon.Component return spring 20, spring adjusting pad near the other magnetic line of force MF
Piece 21, return spring seat 30, Needle shaft 33 etc. should use nonmagnetic substance or weak magnetic material to be made, or it be implemented non-
Magnetization or the processing of weak magnetization are (referring to Fig. 1).
For the guiding key element having described in movable member needle-valve component 3, the return bullet in movable member needle-valve component 3
By envelope in stepped hole 142 in electromagnetism component 1 in fixed core 14, it seals the big of valve head 34 for the big periphery 302 of spring abutment 30
Periphery 342 is by the endoporus 721 of envelope valve seat 72 in valve seat component 7, and then movable member needle-valve component 3 is limited at axial direction
Moved back and forth in the up stroke δ of direction, and then complete the open and close of fuel injection valve (referring to Fig. 1, Fig. 3, Fig. 4, Fig. 9).
When the external plug wire 160 for electromagnetic excitation to it is electric when, the coil block produces magnetic force, in the work of magnetic force
Start to act with lower movable member, show as：Armature 31 moves axially upward in the presence of magnetic force, while drives Needle shaft
33 move axially upward, and sealing valve head 34 is lifted out the sealing ring surface 722 of valve seat 72, the injection of now described fuel oil
Valve is opened；As magnetic attachment gap (movable member stroke) δ=0, fuel injection valve fully opens (referring to Fig. 1, Fig. 2, Fig. 9).
In fuel injection valve opening process, gasoline circulation path reaches since external oil pipe after the filtering of filter screen 10
Insertion stepped hole 144 and 142 in electromagnetism component 1 in fixed core 14, then the axial hole 331 through Needle shaft 33 in needle-valve component 3
With cross-drilled hole 332, and then by the fuel injection valve valve body structure formed a logical oil circuit footpath 370, then from sealing valve head
Cross-drilled hole 341 in 34 enters, then the drain pan 371 formed by the fuel injection valve valve body structure is flowed to from its inclined hole 343,
Last gasoline sprays into cylinder from spray orifice 723.When the external plug wire 160 of electromagnetic excitation powers off, return spring 20 resets,
Fuel injection valve is closed, and gasoline stops injection (referring to Fig. 1, Fig. 2, Fig. 4, Fig. 7).
Embodiment provided above is better embodiment of the present utility model, is only used for convenient explanation the utility model, and
It is non-to make any formal limitation, any those of ordinary skill in the art to the utility model, if not departing from
In the range of the utility model carries technical characteristic, locally change or repair using made by the utility model disclosed technology content
The equivalent embodiment of decorations, and without departing from the technical characteristics of the utility model content, still fall within the utility model technical characteristic
In the range of.
Claims (10)
- A kind of 1. gasoline electric-controlled fuel injector, it is characterised in that：Injector assembly includes electromagnetism component, return spring, spring adjustment Pad, needle-valve component, Traffic control system pad, buffer spring, sealing ring, valve seat component, pressing plate and sealing ring, the electromagnetism close Part, needle-valve component, valve seat component use modularized design；The stroke of movable member and the pretightning force of return spring are accurately adjustable, The needle-valve component is movable member, is being limited between valve seat and fixed core, and movable member stroke can pass through Traffic control system Pad is adjusted, and by electromagnetism component, return spring co- controlling its move back and forth；The pretightning force of the return spring can Adjusted by spring adjust pad.
- 2. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：The head of the needle-valve component is one close Valve head is sealed, the sealing valve head and Needle shaft lower end contact position are integral by laser welding, the top insertion of the Needle shaft The buffer spring seat of honour, armature, return spring seat are installed, the buffer spring seat of honour is consolidated with return spring seat by laser welding It is connected on Needle shaft, armature is by the buffer spring seat of honour and return spring seat defined position.
- 3. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：The return spring is by with through hole electricity The return spring seat of a stepped hole and needle-valve component in fixed core in the middle part of magnetic component limits its installation site, so that needle-valve Component is descending with valve body.
- 4. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：The spring adjust pad is close to return Lower spring end face is installed, or is installed between return spring and fixed core stepped hole, and it adjusts return by different thickness The pretightning force of spring.
- 5. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：The Traffic control system pad, which is installed on, to be had Between the end face of through hole electromagnetism component lower end one stepped hole and the upper surface of the valve seat component, using the row of different-thickness Journey adjust pad can adjust the stroke of the movable member needle-valve component.
- 6. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：The buffer spring is enclosed on Needle shaft, And positioned by its seat of honour and lower seat.
- 7. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：The pressing plate is to carry externally threaded fastening Part, it is engaged with the internal thread that adapter sleeve carries in the electromagnetism component so that the valve being made up of needle-valve component and valve seat component Body is connected in electromagnetism component.
- 8. gasoline electric-controlled fuel injector according to claim 1, it is characterised in that：Magnetic attachment gap is by the needle-valve component The gap between a step surface in fixed core in the middle part of the upper surface of portion's armature and electromagnetism component is formed, the gap length It can be adjusted by Traffic control system pad.
- 9. according to the gasoline electric-controlled fuel injector described in claim 2, it is characterised in that：Sealing valve head in the needle-valve component is U Shape hollow structure, several cross-drilled holes are distributed with an upper portion thereof, several inclined holes are distributed with the inclined-plane of bottom；The bottom of the sealing valve head Portion has the external seal anchor ring of an inverted cone-shaped along its center axis.
- 10. gasoline electric-controlled fuel injector according to claim 9, it is characterised in that：Valve base cavity in the valve seat component Bottom also has the interior sealing anchor ring along the inverted cone-shaped of its center axis, the interior sealing anchor ring and the external seal annular face contacts Form the circumferential seal line along its center axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720391040.2U CN206845360U (en) | 2017-04-14 | 2017-04-14 | Gasoline electric-controlled fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720391040.2U CN206845360U (en) | 2017-04-14 | 2017-04-14 | Gasoline electric-controlled fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845360U true CN206845360U (en) | 2018-01-05 |
Family
ID=60791639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720391040.2U Expired - Fee Related CN206845360U (en) | 2017-04-14 | 2017-04-14 | Gasoline electric-controlled fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163366A (en) * | 2022-06-29 | 2022-10-11 | 浙江联控技术有限公司 | Fuel injector sealing structure, methanol engine fuel injector and vehicle |
-
2017
- 2017-04-14 CN CN201720391040.2U patent/CN206845360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163366A (en) * | 2022-06-29 | 2022-10-11 | 浙江联控技术有限公司 | Fuel injector sealing structure, methanol engine fuel injector and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 |