CN106050498A - Electromagnetic valve sinking oil sprayer - Google Patents
Electromagnetic valve sinking oil sprayer Download PDFInfo
- Publication number
- CN106050498A CN106050498A CN201610363241.1A CN201610363241A CN106050498A CN 106050498 A CN106050498 A CN 106050498A CN 201610363241 A CN201610363241 A CN 201610363241A CN 106050498 A CN106050498 A CN 106050498A
- Authority
- CN
- China
- Prior art keywords
- armature
- oil
- control valve
- valve seat
- boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses an electromagnetic valve sinking oil sprayer. The electromagnetic valve sinking oil sprayer comprises an oil sprayer body, a control valve seat, an adjusting ring, an armature and an electromagnet assembly. The inside of the oil sprayer body is of a structure of a cylindrical cavity. The control valve seat, the adjusting ring, the armature and the electromagnet assembly are all installed in the cylindrical cavity of the oil sprayer. A radial protruding structure is arranged in the position, adjacent to a high-pressure oil inlet channel, on the inner wall face of the cavity of the oil sprayer body and directly extends from the bottom of the cavity to the top in the axial direction of the oil sprayer body. The control valve seat, the adjusting ring, the armature and the electromagnet assembly are al provided with grooves corresponding to the protruding structure. The armature, an armature rod, a ball valve, a sealing cone face, an oil pump capacity hole and a high-pressure oil channel can be arranged on the same axis, and the axis coincide to the axis of the oil sprayer body. The installation space of an electromagnet is further enlarged in a limited space while the installation requirement of the sinking oil sprayer is met.
Description
Technical field
The invention belongs to internal combustion engine injection system field, a kind of electromagnetic valve sunk type fuel injector.
Background technology
Along with Abgasgesetz is increasingly stricter, Diesel engine is had higher requirement, need to be to spray burning process
Carry out more accurately, control neatly, it is desirable to common rail fuel combustion system has multi-injection ability, i.e. improves the response speed of oil spout
And precision.
Use electromagnetic valve sunk type fuel injector, by electric magnet installation site close proximity to atomizer, shorten and control piston, pin
Valve length, reduces the electric magnet mechanical hydraulic delay to atomizer oil spout, the response speed of fuel injector can be greatly improved.But more lean on
Nearly atomizer physical dimension is the least, and high-pressure oil duct to be arranged, the installing space causing electromagnetic valve is the least, the most existing spray
Oil device expulsion pressure improves constantly, and the requirement to electromagnetic force is more and more higher.Therefore, for electromagnetic valve sunk type fuel injector, electricity
The installation of magnet valve, layout become more and more difficult.
The patent application of Application No. CN201510167428 discloses a kind of fuel injector improving electromagnetic actuator efficiency,
The shortcoming of this kind of structure is: armature and armature lever are eccentric structure relative to oil injector body.Because the opening and closing of ball valve are by holding in the mouth
Tie Tong crosses armature lever and drives, and needle-valve body and oil injector body are tightened by tight cap, and orifice plate is as oil injector body and pin
Structural member between valve, and needle-valve body, oil injector body be screwed together.Therefore, orifice plate and oil injector body, needle-valve body are necessarily same
Axle construction, armature and armature lever are eccentric relative to oil injector body, and ball valve and armature lever connect, then ball valve, sealing cone are by relatively
Orifice plate is eccentric structure.Same connection controls chamber and the fuel-displaced metering-orifice of sealing cone, high-pressure oil duct by the generation of relative opening plate axis
Tilt for oblique oil circuit.Tiltedly the axis of oil circuit is not the structure of vertical orifice plate end face, and difficulty of processing is relatively big, and the flow of fuel-displaced metering-orifice
Stability is not so good as straight hole structure, affects fuel injector performance by generation.
And tiltedly oil circuit makes ball valve by being acted on by asymmetric hydraulic shock power, makes ball valve bad stability.
Sealing cone is the important feature that ball valve plays on-off action, and sealing surface is eccentric relative to orifice plate so that in the course of processing
In because rotate need counterweight, it is difficult to ensure that machining accuracy, processing cost is higher, difficulty is bigger.
Summary of the invention
Present invention aim at providing a kind of electromagnetic valve sunk type fuel injector, it is possible to achieve armature, armature lever, ball valve, close
The envelope conical surface, fuel-displaced metering-orifice, high-pressure oil duct coaxial line are arranged, and and oil injector body dead in line.Meeting sunk type fuel injector peace
While dress needs, in limited space, further increase electric magnet installing space so that electric magnet produces electromagnetic force
Will be bigger, the initial tension of spring of electric magnet can be bigger, can realize ball valve sealing, thus improve spray further under higher rail pressure
The expulsion pressure of oil device.It addition, concentric structure is symmetrical rotary body, it is easy to ensureing crudy, processing cost is lower.
For realizing above-mentioned technical purpose, the present invention adopts the following technical scheme that
A kind of electromagnetic valve sunk type fuel injector, including oil injector body, control valve seat, adjustment ring, armature, armature bracket, armature lever,
Electromagnet assembly, orifice plate and needle valve assembly, wherein, oil injector body is internal is cylindrical cavity structure, in cylindrical cavity structure
Leaf spring, electromagnet assembly, armature, control valve seat, orifice plate and needle valve assembly, described control valve seat, armature are installed from top to bottom
And armature bracket center is provided with the duct slided for described armature lever, between described leaf spring and armature bracket, it is provided with T-shaped spring base,
T-shaped spring base upper end connects leaf spring, and the boss of lower end connects electric magnet spring, and the electric magnet spring other end connects described armature
Bar；It is provided with ball valve and sealing cone between described control valve seat and orifice plate, is positioned at the lower section of described sealing cone in orifice plate successively
It is provided with high-pressure oil duct, fuel-displaced metering-orifice；Described adjustment ring is sheathed on the outside of armature, and between iron core and control valve seat；
Described electromagnet assembly, armature, armature lever, ball valve, sealing cone, fuel-displaced metering-orifice and high-pressure oil duct coaxial line are arranged, and
Overlap with oil injector body inner circular column chamber axis；
The position adjoining high pressure oil input channel on the cavity inner wall face of oil injector body is radially reserved with projective structure, described protrusion
Structure extends to top at oil injector body axis direction from cavity bottom, and projective structure is at the inwall in chamber axis direction
Face is the face of cylinder；
Armature bracket is positioned at iron core top, described armature bracket, iron core, adjustment ring, control valve seat and T-shaped spring base be respectively provided with
The external cylindrical surface that the internal face of described cylindrical cavity coordinates, armature bracket, iron core, adjustment ring, control valve seat and T-shaped spring base
External cylindrical surface on be provided with groove along oil injector body axis direction, described groove and the protrusion knot on oil injector body cavity inner wall face
Structure is connected.
The top of described adjustment ring is provided with two-stage boss, is first order boss and second level boss respectively, the wherein second level
Boss is positioned at first order boss top, and two-stage boss internal face axis is with armature dead in line.
The internal face of described first order boss and armature outside wall surface coordinate, and leave gap.
The bottom of described iron core is provided with ring groove, and described ring groove coordinates with the second level boss in adjustment ring even
Connect.
Described projective structure is the face of cylinder at the internal face of the axis direction formation of oil injector body cylindrical cavity, the face of cylinder
The fan angle formed is more than 15 °.
It is provided with groove, described groove and projective structure along oil injector body axis direction on the outer wall of described armature to coordinate even
Connect.The positive effect of the present invention is:
The invention discloses a kind of electromagnetic valve sunk type fuel injector, armature, armature lever, ball valve, sealing cone, fuel-displaced can be realized
Metering-orifice, high-pressure oil duct coaxial line are arranged, and and oil injector body dead in line.While meeting sunk type fuel injector installation needs,
Electric magnet installing space is further increased so that electric magnet produces electromagnetic force will be bigger, electric magnet in limited space
Initial tension of spring can be bigger, ball valve sealing can be realized under higher rail pressure, thus improve the injection pressure of fuel injector further
Power.Produce bigger electromagnetic force in limited installation space, electric magnet be will be further reduced and prolong to the mechanical hydraulic of atomizer oil spout
Late, thus improve the response speed of fuel injector further.
It addition, concentric structure is symmetrical rotary body, it is easy to ensureing crudy, processing cost is lower.
Accompanying drawing explanation
Fig. 1 is by high-pressure oil duct and fuel injector axis schematic cross-section；
Fig. 2 is oil injector body inner cylinder cavity body structure top view；
Fig. 3 is vertical high voltage oil duct and passes through fuel injector axis schematic cross-section；
Fig. 4 is adjustment ring structural perspective；
Fig. 5 is electromagnet assembly, adjustment ring, control valve seat assembling schematic diagram；
Fig. 6 is fuel injector cylindrical cavity interior cooperation to be provided with structural representation after control valve seat；
Fig. 7 is fuel injector cylindrical cavity processing spec schematic diagram；
In figure: 1-oil injector body；2-control valve seat；3-high pressure oil input channel；4-adjustment ring；5-armature；6-armature lever；7-iron core；
8-armature bracket；9-spring base；10-leaf spring；11-electric magnet spring；12-cylindrical cavities structure；13-projective structure；14-adjusts
Domain groove；15-first order boss；16-second level boss；18-chamber hole A；19-hole B；20-process tool outline shows
Meaning；21-ring groove；22-fan angle；23-orifice plate；The fuel-displaced metering-orifice of 24-；25-high-pressure oil duct；26-sealing cone；27-
Needle valve assembly；29-controls chamber；The tight cap of 30-.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only with
The basic structure of the illustration explanation present invention, therefore it only shows the composition relevant with the present invention.
As shown in Fig. 1 ~ Fig. 3, a kind of electromagnetic valve sunk type fuel injector, including oil injector body 1, control valve seat 2, adjustment ring 4,
Armature 5, electromagnet assembly, oil injector body 1 is internal is cylindrical cavity structure, control valve seat 2, adjustment ring 4, armature 5, electric magnet
Assembly is installed in fuel injector cylindrical cavity；Leaf spring 10, electromagnet assembly, rank are installed in cylindrical cavity from top to bottom
Ferrum 5, control valve seat 2, T-shaped spring base is between leaf spring 10 and armature bracket 8, and upper end connects leaf spring 10, and the boss of lower end is even
Connecing electric magnet spring 11, external cylindrical surface and cylindrical cavities inner structural wall face coordinate, on the cavity inner wall face of oil injector body 1 and high pressure
The position that oil input channel adjoins radially is provided with projective structure 13, described projective structure 13 at oil injector body 1 axis direction from cavity
Bottom unanimously extends to top, it is ensured that high pressure oil input channel outside wall surface has enough intensity.
Electromagnet assembly is cylindrical-shaped structure, iron core 7 external cylindrical surface and oil injector body 1 inner cylindrical chamber in electromagnet assembly
Internal wall coordinates, and the sidewall of iron core 7 is provided with and the groove of described projective structure 13 correspondence, and armature bracket 8 is positioned at iron core 7 and pushes up
Portion, armature bracket 8 external cylindrical surface and inner cylindrical cavity inner wall face coordinate, and have in groove and the projective structure 13 of correspondence simultaneously
Wall coordinates；
Further, described projective structure is the face of cylinder at the axis direction internal face of cavity, the segment angle that the face of cylinder is formed
Degree is more than 15 °, it is ensured that have enough lengths of fit；
Adjustment ring 4 external cylindrical surface and and inner cylindrical cavity inner wall face coordinate, and be provided with at described projective structure 13 correspondence position
Axially adjustable ring groove 14；
Described control valve seat 2 is column structure, and external cylindrical surface and cylindrical cavity internal face coordinate, and have the groove of correspondence simultaneously
Coordinate with projective structure 13 internal face.
The external cylindrical surface external cylindrical surface of described T-shaped spring base 9 and cylindrical cavity internal face coordinate, and have correspondence simultaneously
Groove and projective structure 13 internal face coordinate.
Fuel injector after assembling, leaf spring 10 is positioned at inside oil injector body, produces certain pre-for cylindrical cavity structural base
Clamp force, pretightning force acts on armature bracket 8, and passes to iron core 7, and adjustment ring 4 contacts with iron core 7, and therefore adjustment ring 4 is to iron core 7
Play a supporting role, contact with control valve seat 2 bottom adjustment ring 4 simultaneously.
Further, adjustment ring 4 top described herein is provided with two-stage boss, is first order boss 15 and second respectively
Level boss 16, second level boss is positioned on first order boss, and two-stage boss internal face axis is with armature dead in line.And then it is permissible
In limited space, the overall dimensions of armature is accomplished maximum, improves the electromagnetic force that electric magnet produces.Simultaneously at described armature
There is groove, because electric magnet itself needs recessing to subtract with projective structure correspondence position and relative axis symmetric position on circumference
Little electromagnetic induction magnetic eddy current, therefore groove is not result in that electromagnetic force reduces.
The application armature 5, under the effect of electromagnetic force, will move up and down in adjustment ring 4, open and close control valve, institute
Adjustment ring 4 first order boss 15 internal face stated and armature outside wall surface coordinate, and leave gap.
Ring groove 21, adjustment ring 4 second level boss 16 and described ring groove it is provided with bottom iron core 7 described herein
21 coordinate, for the location between adjustment ring and iron core.
A kind of electromagnetic valve sunk type fuel injector of the present invention, it is possible to achieve armature, armature lever, ball valve, sealing cone, fuel-displaced
Metering-orifice, high-pressure oil duct coaxial line are arranged, and and oil injector body dead in line.The cylindrical cavity structure of described oil injector body interior
The position adjoined with high pressure oil input channel on wall is radially provided with projective structure 13, and described projective structure 13 is at oil injector body axis
Direction extends to top from cavity bottom, and this kind of structure is so that the outer profile size of electromagnet assembly can do more
Greatly, can produce bigger electromagnetic force, the initial tension of spring of electric magnet can be bigger, can realize ball valve sealing under higher rail pressure, from
And improve the expulsion pressure of fuel injector further.Produce bigger electromagnetic force in limited installation space, electricity be will be further reduced
Magnet postpones to the mechanical hydraulic of atomizer oil spout, thus improves the response speed of fuel injector further.
As it is shown in fig. 7, one electromagnetic valve sunk type fuel injector inner circular column cavity body structure processing method of the present invention is:
First processing cylindrical cavity hole A18, hole A18 axis is relative to oil injector body journal offset, and then hole is removed in processing
Part between B19 and hole A18, hole B19 axis overlaps, in the chamber of oil injector body with oil injector body inner circular column chamber axis
The position adjoining high pressure oil input channel on internal wall is reserved with radially protruding structure 13, it is seen that described a kind of electromagnetic valve sunk type spray
Oil device technique is simple.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely can carry out various change and amendment in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.
Claims (6)
1. an electromagnetic valve sunk type fuel injector, including oil injector body, control valve seat, adjustment ring, armature, armature bracket, armature
Bar, electromagnet assembly, orifice plate and needle valve assembly, wherein, oil injector body is internal is cylindrical cavity structure, cylindrical cavity structure
Leaf spring, electromagnet assembly, armature, control valve seat, orifice plate and needle valve assembly, described control valve seat, rank are installed the most from top to bottom
Ferrum and armature bracket center are provided with the duct slided for described armature lever, are provided with T-shaped spring between described leaf spring and armature bracket
Seat, T-shaped spring base upper end connects leaf spring, and the boss of lower end connects electric magnet spring, and the electric magnet spring other end connects described rank
Iron；Being provided with ball valve and sealing cone between described control valve seat and orifice plate, the lower section being positioned at described sealing cone in orifice plate depends on
Secondary it is provided with high-pressure oil duct, fuel-displaced metering-orifice；Described adjustment ring is sheathed on the outside of armature, and between iron core and control valve seat；
It is characterized in that:
Described electromagnet assembly, armature, armature lever, ball valve, sealing cone, fuel-displaced metering-orifice and high-pressure oil duct coaxial line are arranged, and
Overlap with oil injector body inner circular column chamber axis；
The position adjoining high pressure oil input channel on the cavity inner wall face of oil injector body is radially reserved with projective structure, described protrusion
Structure extends to top at oil injector body axis direction from cavity bottom, and projective structure is at the inwall in chamber axis direction
Face is the face of cylinder；
Armature bracket is positioned at iron core top, described armature bracket, iron core, adjustment ring, control valve seat and T-shaped spring base be respectively provided with
The external cylindrical surface that the internal face of described cylindrical cavity coordinates, armature bracket, iron core, adjustment ring, control valve seat and T-shaped spring base
External cylindrical surface on be provided with groove along oil injector body axis direction, described groove and the protrusion knot on oil injector body cavity inner wall face
Structure is connected.
A kind of electromagnetic valve sunk type fuel injector the most according to claim 1, it is characterised in that: the top of described adjustment ring sets
Having two-stage boss, be first order boss and second level boss respectively, wherein second level boss is positioned at first order boss top, two-stage
Boss internal face axis is with armature dead in line.
A kind of electromagnetic valve sunk type fuel injector the most according to claim 2, it is characterised in that: described first order boss interior
Wall and armature outside wall surface coordinate, and leave gap.
A kind of electromagnetic valve sunk type fuel injector the most according to claim 1, it is characterised in that: the bottom of described iron core is provided with
Ring groove, described ring groove is connected with the second level boss in adjustment ring.
A kind of electromagnetic valve sunk type fuel injector the most according to claim 1, it is characterised in that: described projective structure is in oil spout
The internal face that the axis direction of body cylindrical cavity is formed is the face of cylinder, and the fan angle that the face of cylinder is formed is more than 15 °.
A kind of electromagnetic valve sunk type fuel injector the most according to claim 1, it is characterised in that: edge on the outer wall of described armature
Oil injector body axis direction is provided with groove, and described groove and projective structure are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363241.1A CN106050498B (en) | 2016-05-27 | 2016-05-27 | A kind of solenoid valve sunk type fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363241.1A CN106050498B (en) | 2016-05-27 | 2016-05-27 | A kind of solenoid valve sunk type fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050498A true CN106050498A (en) | 2016-10-26 |
| CN106050498B CN106050498B (en) | 2018-07-24 |
Family
ID=57175447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610363241.1A Active CN106050498B (en) | 2016-05-27 | 2016-05-27 | A kind of solenoid valve sunk type fuel injector |
Country Status (1)
| Country | Link |
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| CN (1) | CN106050498B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397325A (en) * | 2018-02-09 | 2018-08-14 | 中国第汽车股份有限公司 | A kind of common-rail injector throttling control valve |
| CN108930621A (en) * | 2017-05-19 | 2018-12-04 | 温特图尔汽柴油公司 | Large-sized diesel motor and method for operating large-sized diesel motor |
| CN110594061A (en) * | 2019-09-26 | 2019-12-20 | 重庆红江机械有限责任公司 | Electric control common rail type heavy oil injector |
| RU2731155C1 (en) * | 2019-07-05 | 2020-08-31 | федеральное государственное бюджетное образовательное учреждение высшего образования "Московский политехнический университет" (Московский Политех) | Electrically-hydraulic control nozzle |
| CN111677612A (en) * | 2020-06-24 | 2020-09-18 | 蒋惠 | High-capacity quantitative fuel injection valve with inductance circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502632A (en) * | 1980-12-12 | 1985-03-05 | Robert Bosch Gmbh | Electromagnetically actuatable valve, in particular a fuel injection valve for fuel injection systems |
| 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 |
| CN103644060A (en) * | 2013-12-05 | 2014-03-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Control valve |
| CN104847555A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Oil sprayer improving efficiency of electromagnetic actuator |
-
2016
- 2016-05-27 CN CN201610363241.1A patent/CN106050498B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502632A (en) * | 1980-12-12 | 1985-03-05 | Robert Bosch Gmbh | Electromagnetically actuatable valve, in particular a fuel injection valve for fuel injection systems |
| 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 |
| CN103644060A (en) * | 2013-12-05 | 2014-03-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Control valve |
| CN104847555A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Oil sprayer improving efficiency of electromagnetic actuator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930621A (en) * | 2017-05-19 | 2018-12-04 | 温特图尔汽柴油公司 | Large-sized diesel motor and method for operating large-sized diesel motor |
| CN108397325A (en) * | 2018-02-09 | 2018-08-14 | 中国第汽车股份有限公司 | A kind of common-rail injector throttling control valve |
| RU2731155C1 (en) * | 2019-07-05 | 2020-08-31 | федеральное государственное бюджетное образовательное учреждение высшего образования "Московский политехнический университет" (Московский Политех) | Electrically-hydraulic control nozzle |
| CN110594061A (en) * | 2019-09-26 | 2019-12-20 | 重庆红江机械有限责任公司 | Electric control common rail type heavy oil injector |
| CN111677612A (en) * | 2020-06-24 | 2020-09-18 | 蒋惠 | High-capacity quantitative fuel injection valve with inductance circuit |
| CN111677612B (en) * | 2020-06-24 | 2021-07-13 | 苏州宝凡电子科技有限公司 | High-capacity quantitative fuel injection valve with inductance circuit |
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| Publication number | Publication date |
|---|---|
| CN106050498B (en) | 2018-07-24 |
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