CN106050498B - A kind of solenoid valve sunk type fuel injector - Google Patents
A kind of solenoid valve sunk type fuel injector Download PDFInfo
- Publication number
- CN106050498B CN106050498B CN201610363241.1A CN201610363241A CN106050498B CN 106050498 B CN106050498 B CN 106050498B CN 201610363241 A CN201610363241 A CN 201610363241A CN 106050498 B CN106050498 B CN 106050498B
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- armature
- injector body
- oil
- control valve
- valve seat
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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 a kind of solenoid valve sunk type fuel injectors, including oil injector body, control valve seat, adjustment ring, armature, electromagnet assembly, it is cylindrical cavity structure inside oil injector body, control valve seat, adjustment ring, armature, electromagnet assembly are installed in fuel injector cylindrical cavity.The position adjoined with high pressure oil input channel on the cavity inner wall face of oil injector body is equipped with radially protruding structure, and the projective structure extends to top in oil injector body axis direction from cavity bottom；Control valve seat, adjustment ring, electromagnet assembly are equipped with groove corresponding with the projective structure.Armature, armature lever, ball valve, sealing cone, fuel-displaced metering-orifice, high-pressure oil duct coaxial line arrangement may be implemented, and overlapped with oil injector body axis.Meet sunk type fuel injector installation need while, in a limited space in further increase electromagnet installation space.
Description
Technical field
The invention belongs to internal combustion engine fuel injection system field, in particular to a kind of solenoid valve sunk type fuel injector.
Background technology
As emission regulation is increasingly stringenter, to diesel engine, more stringent requirements are proposed, need to be to spray burning process
Progress is more accurate, neatly controls, it is desirable that common rail fuel combustion system has multi-injection ability, that is, improves the response speed of oil spout
And precision.
Control piston, needle are shortened by electromagnet installation site close proximity to atomizer using solenoid valve sunk type fuel injector
Valve length, the mechanical hydraulic for reducing electromagnet to atomizer oil spout postpone, and the response speed of fuel injector can be greatly improved.But it more leans on
Nearly atomizer structure size is smaller, while also to arrange high-pressure oil duct, causes the installation space of solenoid valve smaller, while existing spray
Oily device injection pressure is continuously improved, and the requirement to electromagnetic force is also higher and higher.Therefore, for solenoid valve sunk type fuel injector, electricity
The installation of magnet valve, arrangement become more and more difficult.
Application No. is the patent applications of CN201510167428 to disclose a kind of fuel injector improving electromagnetic actuator efficiency,
The shortcomings that this kind of structure is：Armature and armature lever are eccentric structure with respect to oil injector body.Because the opening and closing of ball valve are by holding in the mouth
Armature lever driving is crossed by Tie Tong, and needle-valve body and oil injector body are tightened by tight cap, and orifice plate is as oil injector body and needle
Structural member and needle-valve body, oil injector body between valve are screwed together.Therefore, orifice plate and oil injector body, needle-valve body are necessarily same
Axle construction, armature and armature lever are bias with respect to oil injector body, and ball valve is connected with armature lever, then ball valve, sealing cone will be opposite
Orifice plate is eccentric structure.Relative opening plate axis occurs fuel-displaced metering-orifice, the high-pressure oil duct of same connection control chamber and sealing cone
It is oblique oil circuit to tilt.The axis of oblique oil circuit is not the structure of vertical hole plate end face, and difficulty of processing is larger, and the flow of fuel-displaced metering-orifice
Stability is not so good as straight hole structure, will be had an impact to fuel injector performance.
And tiltedly oil circuit makes ball valve that will be 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 with respect to orifice plate bias so that in process
In because rotation need counterweight, it is difficult to ensure that machining accuracy, processing cost higher, difficulty bigger.
Invention content
Present invention aims at a kind of solenoid valve sunk type fuel injector is provided, armature, armature lever, ball valve, close may be implemented
The conical surface, fuel-displaced metering-orifice, high-pressure oil duct coaxial line arrangement are sealed, and is overlapped with oil injector body axis.Meeting sunk type fuel injector peace
It is interior in a limited space further to increase electromagnet installation space so that electromagnet generates electromagnetic force while dress needs
The initial tension of spring of bigger, electromagnet can be realized into ball valve sealing with bigger under higher rail pressure, to further increase spray
The injection pressure of oily device.In addition, concentric structure is symmetrical rotary body, it is easy to ensure that processing quality, processing cost are lower.
To realize the above-mentioned technical purpose, the present invention adopts the following technical scheme that：
A kind of solenoid valve sunk type fuel injector, including oil injector body, control valve seat, adjustment ring, armature, armature bracket, rank
Iron, electromagnet assembly, orifice plate and needle valve assembly, wherein be cylindrical cavity structure, cylindrical cavity knot inside oil injector body
Leaf spring, electromagnet assembly, armature, control valve seat, orifice plate and needle valve assembly be installed from top to bottom in structure, the control valve seat,
Armature and armature bracket center are equipped with the duct for armature lever sliding, and T-type bullet is equipped between the leaf spring and armature bracket
Spring abutment, T-type spring base upper end connect leaf spring, and the boss of lower end connects electromagnet spring, described in the connection of the electromagnet spring other end
Armature lever；It is equipped with ball valve and sealing cone between the control valve seat and orifice plate, the lower section of the sealing cone is located in orifice plate
It is equipped with high-pressure oil duct, fuel-displaced metering-orifice successively；The adjustment ring is sheathed on the outside of armature, and positioned at iron core and control valve seat it
Between；
The electromagnet assembly, armature, armature lever, ball valve, sealing cone, fuel-displaced metering-orifice and high-pressure oil duct coaxial line cloth
It sets, and is overlapped with oil injector body inner circular column chamber axis；
The position for adjoining high pressure oil input channel on the cavity inner wall face of oil injector body is radially reserved with projective structure, described
Projective structure extends to top in oil injector body axis direction from cavity bottom, and projective structure is in chamber axis direction
Internal face is cylindrical surface；
Armature bracket is located at the top of iron core, and the armature bracket, iron core, adjustment ring, control valve seat and T-type spring base have
There are the external cylindrical surface coordinated with the internal face of the cylindrical cavity, armature bracket, iron core, adjustment ring, control valve seat and T-type bullet
The external cylindrical surface upper edge oil injector body axis direction of spring abutment be equipped with groove, the groove with it is convex on oil injector body cavity inner wall face
Go out respective outer side edges connection.
The top of the adjustment ring is equipped with two-stage boss, is first order boss and second level boss, the wherein second level respectively
Boss is located at first order boss top, and two-stage boss internal face axis is overlapped with armature axis.
The internal face and armature outside wall surface of the first order boss coordinate, and there are gaps.
The bottom of the iron core is equipped with ring groove, and the ring groove connects with the second level boss cooperation in adjustment ring
It connects.
The internal face that the projective structure is formed in the axis direction of oil injector body cylindrical cavity is cylindrical surface, cylindrical surface
The fan angle of formation is more than 15 °.
The outer wall upper edge oil injector body axis direction of the armature is equipped with groove, and the groove and projective structure cooperation connect
It connects.The positive effect of the present invention is：
The invention discloses a kind of solenoid valve sunk type fuel injector, may be implemented armature, armature lever, ball valve, sealing cone,
Fuel-displaced metering-orifice, high-pressure oil duct coaxial line arrangement, and overlapped with oil injector body axis.Meet the same of sunk type fuel injector installation needs
When, it is interior in a limited space further to increase electromagnet installation space so that electromagnet generates electromagnetic force by bigger, electromagnetism
The initial tension of spring of iron can realize ball valve sealing with bigger under higher rail pressure, to further increase the injection of fuel injector
Pressure.The electromagnetic force that bigger is generated in limited installation space, will be further reduced electromagnet to atomizer oil spout mechanical hydraulic
Delay, to further increase the response speed of fuel injector.
In addition, concentric structure is symmetrical rotary body, it is easy to ensure that processing quality, processing cost are lower.
Description of the drawings
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 vertical view；
Fig. 3 is vertical high voltage oil duct and by 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 that cooperation is equipped with structural schematic diagram after control valve seat in fuel injector cylindrical cavity；
Fig. 7 is fuel injector cylindrical cavity processing spec schematic diagram；
In figure：1- oil injector bodies；2- control valve seats；3- high pressure oil input channels；4- adjustment rings；5- armature；6- armature levers；7- iron
Core；8- armature brackets；9- spring bases；10- leaf springs；11- electromagnet springs；12- cylindrical cavities structures；13- projective structures； 14-
Adjust ring groove；15- first order boss；The second level 16- boss；18- chamber holes A；The holes 19- B；20- process tool outer profiles show
Meaning；21- ring grooves；22- fan angles；23- orifice plates；The fuel-displaced metering-orifices of 24-；25- high-pressure oil ducts；26- sealing cones；27-
Needle valve assembly；29- control chambers；The tight caps of 30-.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As shown in Fig. 1 ~ Fig. 3, a kind of solenoid valve sunk type fuel injector, including oil injector body 1, control valve seat 2, adjustment ring 4,
Armature 5, electromagnet assembly, 1 inside of oil injector body is cylindrical cavity structure, control valve seat 2, adjustment ring 4, armature 5, electromagnet
Component is installed in fuel injector cylindrical cavity；Leaf spring 10, electromagnet assembly, rank are installed from top to bottom in cylindrical cavity
Iron 5, control valve seat 2, for T-type spring base between leaf spring 10 and armature bracket 8, upper end connects leaf spring 10, and the boss of lower end connects
Connect electromagnet spring 11, external cylindrical surface and the cooperation of cylindrical cavities inner structural wall face, on the cavity inner wall face of oil injector body 1 and high pressure
The position that oil input channel adjoins radially is equipped with projective structure 13, and the projective structure 13 is in 1 axis direction of oil injector body 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, 1 inner cylindrical chamber of 7 external cylindrical surface of iron core and oil injector body in electromagnet assembly
Internal wall surface cooperation, the side wall of iron core 7 is equipped with and 13 corresponding groove of the projective structure, and armature bracket 8 is located at the top of iron core 7
Portion, 8 external cylindrical surface of armature bracket and the cooperation of inner cylindrical cavity inner wall face, while having in corresponding groove and projective structure 13
Wall surface coordinates；
Further, the projective structure cavity axis direction internal face be cylindrical surface, cylindrical at fan
Shape angle is more than 15 °, it is ensured that has enough lengths of fit；
4 external cylindrical surface of adjustment ring and coordinate with inner cylindrical cavity inner wall face, and in 13 corresponding position of the projective structure
Equipped with axially adjustable ring groove 14；
The control valve seat 2 is cylindrical structure, external cylindrical surface and the cooperation of cylindrical cavity internal face, while being had corresponding
Groove and the cooperation of 13 internal face of projective structure.
The external cylindrical surface external cylindrical surface and cylindrical cavity internal face of the T-type spring base 9 coordinate, while having corresponding
Groove and the cooperation of 13 internal face of projective structure.
Fuel injector after assembly, leaf spring 10 are located inside oil injector body, and centainly pre- is generated for cylindrical cavity structural base
Clamp force, pretightning force act on armature bracket 8, and are transmitted to iron core 7, and adjustment ring 4 and iron core 7 contact, therefore adjustment ring 4 is to iron core 7
It plays a supporting role, while 4 bottom of adjustment ring and control valve seat 2 contact.
Further, 4 top of adjustment ring described herein is equipped with two-stage boss, is first order boss 15 and second respectively
Grade boss 16, second level boss are located on first order boss, and two-stage boss internal face axis is overlapped with armature axis.And then it can be with
The appearance and size of armature is accomplished into maximum in a limited space, improves the electromagnetic force that electromagnet generates.Simultaneously in the armature
On circumference and projective structure corresponding position and relative axis symmetric position have groove, because electromagnet itself needs recessing to subtract
Small electromagnetic induction magnetic vortex, therefore groove will not cause electromagnetic force to reduce.
The application armature 5 will move up and down in adjustment ring 4 under the action of electromagnetic force, and open and close control valve, institute
4 first order boss of adjustment ring, 15 internal face and armature the outside wall surface cooperation stated, and there are gaps.
7 bottom of iron core described herein is equipped with ring groove 21,4 second level boss 16 of adjustment ring and the ring groove
21 cooperations, for the positioning between adjustment ring and iron core.
Armature, armature lever, ball valve, sealing cone, fuel-displaced may be implemented in a kind of solenoid valve sunk type fuel injector of the present invention
Metering-orifice, high-pressure oil duct coaxial line arrangement, and overlapped with oil injector body axis.The cylindrical cavity structure of the oil injector body it is interior
The position adjoined with high pressure oil input channel on wall surface is radially equipped with projective structure 13, and the projective structure 13 is in oil injector body axis
Direction extends to top from cavity bottom, and such structure can allow the outer profile size of electromagnet assembly to do more
Greatly, bigger electromagnetic force can be generated, the initial tension of spring of electromagnet can realize ball valve sealing with bigger under higher rail pressure, from
And further improve the injection pressure of fuel injector.The electromagnetic force that bigger is generated in limited installation space, will be further reduced electricity
The mechanical hydraulic of magnet to atomizer oil spout postpones, to further increase the response speed of fuel injector.
As shown in fig. 7, a kind of solenoid valve sunk type fuel injector inner circular column cavity body structure processing method of the present invention is：
Cylindrical cavity hole A18 is processed first, and hole A18 axis are with respect to oil injector body axis offset, then processing removal
Part between hole B19 and hole A18, hole B19 axis are overlapped with oil injector body inner circular column chamber axis, in oil injector body
The position for adjoining high pressure oil input channel on cavity inner wall face is reserved with radially protruding structure 13, it is seen that a kind of solenoid valve sunk type
Fuel injector is simple for process.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (6)
1. a kind of solenoid 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 be cylindrical cavity structure, cylindrical cavity structure inside oil injector body
Leaf spring, electromagnet assembly, armature, control valve seat, orifice plate and needle valve assembly, the control valve seat, rank are inside installed from top to bottom
Iron and armature bracket center are equipped with the duct for armature lever sliding, and T-type spring is equipped between the leaf spring and armature bracket
Seat, T-type spring base upper end connect leaf spring, and the boss of lower end connects electromagnet spring, and the electromagnet spring other end connects the rank
Iron；Ball valve and sealing cone are equipped between the control valve seat and orifice plate, in orifice plate positioned at the lower section of the sealing cone according to
It is secondary to be equipped with high-pressure oil duct, fuel-displaced metering-orifice；The adjustment ring is sheathed on the outside of armature, and between iron core and control valve seat；
It is characterized in that:
The electromagnet assembly, armature, armature lever, ball valve, sealing cone, fuel-displaced metering-orifice and high-pressure oil duct coaxial line arrangement, and
It is overlapped with oil injector body inner circular column chamber axis；
The position for adjoining high pressure oil input channel on the cavity inner wall face of oil injector body is radially reserved with projective structure, the protrusion
Structure extends to top in oil injector body axis direction from cavity bottom, and projective structure is in the inner wall in chamber axis direction
Face is cylindrical surface；
Armature bracket is located at the top of iron core, the armature bracket, iron core, adjustment ring, control valve seat and T-type spring base all have with
The external cylindrical surface of the internal face cooperation of the cylindrical cavity, armature bracket, iron core, adjustment ring, control valve seat and T-type spring base
External cylindrical surface upper edge oil injector body axis direction be equipped with groove, the protrusion knot on the groove and oil injector body cavity inner wall face
Structure is connected.
2. a kind of solenoid valve sunk type fuel injector according to claim 1, it is characterised in that：It is set at the top of the adjustment ring
There is two-stage boss, be first order boss and second level boss respectively, wherein second level boss is located at first order boss top, two-stage
Boss internal face axis is overlapped with armature axis.
3. a kind of solenoid valve sunk type fuel injector according to claim 2, it is characterised in that：The first order boss it is interior
Wall surface and the cooperation of armature outside wall surface, and there are gaps.
4. a kind of solenoid valve sunk type fuel injector according to claim 1, it is characterised in that：The bottom of the iron core is equipped with
Ring groove, the ring groove are connected with the second level boss in adjustment ring.
5. a kind of solenoid valve sunk type fuel injector according to claim 1, it is characterised in that：The projective structure is in oil spout
The internal face that the axis direction of body cylindrical cavity is formed is cylindrical surface, cylindrical at fan angle be more than 15 °.
6. a kind of solenoid valve sunk type fuel injector according to claim 1, it is characterised in that：The outer wall upper edge of the armature
Oil injector body axis direction is equipped with groove, and the 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 CN106050498A (en) | 2016-10-26 |
| CN106050498B true CN106050498B (en) | 2018-07-24 |
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| 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 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3404235A1 (en) * | 2017-05-19 | 2018-11-21 | Winterthur Gas & Diesel AG | Large diesel motor and method for operating same |
| 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 |
| CN110594061B (en) * | 2019-09-26 | 2021-02-26 | 重庆红江机械有限责任公司 | Electric control common rail type heavy oil injector |
| 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 |
Citations (4)
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|---|---|---|---|---|
| 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 |
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| CN106050498A (en) | 2016-10-26 |
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