CN110107436A - A kind of armature seat of hydraulic control common-rail injector - Google Patents
A kind of armature seat of hydraulic control common-rail injector Download PDFInfo
- Publication number
- CN110107436A CN110107436A CN201910308391.6A CN201910308391A CN110107436A CN 110107436 A CN110107436 A CN 110107436A CN 201910308391 A CN201910308391 A CN 201910308391A CN 110107436 A CN110107436 A CN 110107436A
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- Prior art keywords
- hole
- oil
- armature
- communicated
- seat
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- 239000000446 fuel Substances 0.000 claims abstract description 48
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 74
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 206010008469 Chest discomfort Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- 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
-
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A kind of armature seat of hydraulic control common-rail injector, including pedestal fuel feed hole, taper hole face, access ramp, upper throttle orifice, pilot hole, lower end oil suction chamber, oil return hole, oil back chamber and armature seat hole, the upper end of access ramp is communicated with pilot hole, in the case where armature is in free state, the upper end of access ramp is communicated with oil groove is held, the lower end of access ramp is communicated with lower end oil suction chamber, the upper end of oil return hole is communicated with armature seat hole, the lower end of oil return hole is communicated with oil back chamber, oil back chamber is communicated with pilot hole, upper throttle orifice one end is communicated with pedestal fuel feed hole, the other end is communicated with lower end oil suction chamber, armature is sleeved in pilot hole by guide post, hold and forms upper pressure oil cavity between oil groove and pilot hole, sealing cone section is hermetically located on taper hole face, iron-absorbing mass is located in armature seat hole, the discharge area of upper throttle orifice is less than the discharge area of access ramp.It is the core part of the armature seat of hydraulic control common-rail injector.
Description
Technical field:
A kind of it can shorten the invention patent relates to use for diesel engine electric-control common-rail type fuel injector more particularly to simultaneously atomizer and open
Close the common-rail injector of delay time.
Background technique:
Existing high pressure common rail injector is all transmitted using long valve rod, and slow in reacting, structure is complicated, and cannot realize simultaneously
Opening time and shut-in time are reduced, power density is small, and volume and weight has the space of diminution, is not able to satisfy energy-efficient bavin
The mating requirement of oil machine, therefore, applicant devise a kind of hydraulic control rapid response type high pressure common rail injector, utilize specific structure
Armature, armature seat, valve seat and oil nozzle couple form the hydraulic control system of fuel injector opening and closing automatic adjustment, this control system
Injector nozzle matching parts can be achieved with quickly starting and closing without the driving of valve rod rigid mechanical, when shortening the delay of opening and closing
Between, improve power density.This hydraulic control rapid response type high pressure common rail injector applicant separately protects, structure such as Fig. 1-
Shown in Fig. 5, it includes electromagnetic actuator 1, upper spring 2, armature 3, armature seat 4, valve seat 5, lower spring 6, oil nozzle valve body 7, oil nozzle
Needle-valve 8, tight cap 9 and injector body 10, it is armature 3, armature seat 4, valve seat 5 and oil nozzle needle-valve 8 that wherein core, which improves part,
Working principle is as follows:
High pressure fuel in common rail pipe entered by main fuel feed hole 11, pedestal fuel feed hole 41, valve seat fuel feed hole 55, couple
Fuel feed hole 71 and couple high pressure chest 72 constitute asphalt channel, upper pressure oil cavity 12 by upper throttle orifice 44, lower end oil suction chamber 46 with
Pedestal fuel feed hole 41 communicates, and high-pressure channel 53, center cavity 54 are communicated by lower throttle orifice 52 with couple fuel feed hole 71, couple high pressure
Chamber 72 is communicated by vertical throttle orifice 51 with lower end oil suction chamber 46.
When 1 power loss of electromagnetic actuator, due to upper spring 2 pretightning force F1 act on, the sealing cone section 31 of armature 3 with
42 mechanical seal of taper hole face of armature seat 4 cooperates；Under conditions of not considering restriction loss, high-pressure channel 53 and couple are high at this time
Press the liquid pressure in chamber 72 identical as the pressure in common rail pipe, since high-pressure channel 53 is applied to the downward liquid of oil nozzle needle-valve 8
The forced area S1 of pressure F2 is applied to the forced area S2 of the upward hydraulic coupling F3 of oil nozzle needle-valve 8 than couple oil outlet chamber 13
Greatly, therefore F2 > F3, the resultant force of the hydraulic action F2 of the high pressure fuel in the pretightning force F4 and high-pressure channel 53 of lower spring 6
Under effect, F4+F2 > F3, oil nozzle needle-valve 8 is sealed on the seat surface of oil nozzle valve body 7, and fuel injector is in close state, oil spout
Device not oil spout；
When fuel injector needs oil spout, electromagnetic actuator 1 must be electric, and electromagnetic actuator 1 is applied with upward electromagnetism to armature 3
Suction F5, electromagnetic attraction F5 overcome the pretightning force F1 of upper spring 2, and the sealing cone section 31 of 3 uplink of armature, armature 3 leaves armature
The taper hole face 42 of seat 4, the liquid pressure in access ramp 43 reduce rapidly, the height due to the effect of pressure difference, in high-pressure channel 53
Compression ignition oil flows to access ramp 43 by vertical throttle orifice 51 and lower end oil suction chamber 46, and the high pressure fuel of center cavity 54 and high pressure are logical
Road 53 communicates, this road binders enters armature seat hole 49, enters oil back chamber 48 from oil return hole 47 and realizes pressure release；Due to lower throttle orifice 52
The flow-rate ratio a of the flow A1 of flow A2 and vertical throttle orifice 51 are as follows: 0.4 < a < 1, therefore fuel oil and pressure in high-pressure channel 53
It gradually decreases by force, when pressure is reduced to F4+F2 < F3, oil nozzle needle-valve 8 leaves the oil spout seat surface of oil nozzle valve body 7, and fuel injector is real
Existing fuel oil injection.The trunon delay time T1 of injection depends on flow-rate ratio a, S1, S2, F4；It is sprayed compared to more conventional electric-controlled co-rail
The fuel injector of oily device, this programme design eliminates the intermediate mechanical transmission mechanism similar to valve module, by high-pressure channel 53
Fluid pressure changes the force controlled directly to oil nozzle needle-valve 8, and thus can bring three benefits: one is the reduction of transmission mechanism fortune
Delay time caused by dynamic, improve response speed；Two are the reduction of as caused by transmission mechanism movement to injector assembly
Performance and stability influence, improve the stability of injector assembly；Third is that eliminating the manufacturing cost of transmission mechanism；
At the end of fuel injector injection needs, the voltage that electromagnetic actuator 1 applies is cut off, electromagnetic force F5 disappears, by
It is forced on the taper hole face 42 of armature seat 4 in the sealing cone section 31 of the effect of the pretightning force F2 of upper spring 2, armature 3, it is tiltedly logical
The pressure release passage in road 43 is closed, and high pressure fuel enters high-pressure channel 53, another way high pressure fuel by lower throttle orifice 52 all the way
It is transmitted to vertical throttle orifice 51 by upper throttle orifice 44, lower end oil suction chamber 46 also to enter in high-pressure channel 53, at this time high-pressure channel
Liquid pressure in 53 rises rapidly, and when rising to F4+F2 > F3, oil nozzle needle-valve 8 is sealed in the seat surface of oil nozzle valve body 7
On, fuel injector injection is closed；Spray the flow that turn-off delay time T2 depends on flow-rate ratio a, S1, S2, F4 and upper throttle orifice 44
Speed A3；Compared to the valve rod mechanical transfer mechanism of the valve module in more existing common-rail injector, at the end of spraying needs, high pressure
Fuel oil can also enter high-pressure channel by vertical throttle orifice 51 other than it can enter high-pressure channel 53 by lower throttle orifice 52
53, the strong promotion speed of 53 internal combustion oil pressure of high-pressure channel is which thereby enhanced, and then reduce and reach F4+ required for injection is closed
The time of this condition of F2 > F3, that is, reduces turn-off delay time T2, further improve response speed.
Summary of the invention:
The purpose of the present invention is protect a kind of armature seat of hydraulic control common-rail injector.
The technical solution adopted by the present invention is that:
A kind of armature seat of hydraulic control common-rail injector, it is characterized in that: including pedestal fuel feed hole, taper hole face, access ramp, upper section
Discharge orifice, pilot hole, lower end oil suction chamber, oil return hole, oil back chamber and armature seat hole, taper hole face and pilot hole are coaxially disposed, and taper hole
The upper port of pilot hole is arranged in face, and the upper end of access ramp is communicated with pilot hole, in the case where armature is in free state, access ramp
Upper end is communicated with oil groove is held, and the lower end of access ramp is communicated with lower end oil suction chamber, and the upper end of oil return hole is communicated with armature seat hole, oil return
The lower end in hole is communicated with oil back chamber, and oil back chamber is arranged on the lower end surface of armature seat, and communicates with pilot hole, upper throttle orifice one end
It is communicated with pedestal fuel feed hole, the upper throttle orifice other end is communicated with lower end oil suction chamber, and armature is sleeved on armature seat by guide post
In pilot hole, hold and form upper pressure oil cavity between oil groove and pilot hole, the sealing cone section of armature is hermetically located in armature seat
Taper hole face on, iron-absorbing mass is located in armature seat hole, and the discharge area of upper throttle orifice is less than the discharge area of access ramp.
Further, the discharge area of upper throttle orifice is the 1/20~1/5 of the discharge area of access ramp.
It is the core part in hydraulic control common-rail injector.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of hydraulic control common-rail injector；
Fig. 2 is the structural schematic diagram of armature；
Fig. 3 is structural schematic diagram of the invention；
Fig. 4 is the structural schematic diagram of valve seat；
Fig. 5 is the structural schematic diagram of oil nozzle needle-valve；
In figure: 1- electromagnetic actuator；2- upper spring；3- armature；4- armature seat；5- valve seat；Spring under 6-；7- oil nozzle valve
Body；8- oil nozzle needle-valve；The tight cap of 9-；10- injector body；The main fuel feed hole of 11-；The upper pressure oil cavity of 12-；13- couple oil outlet chamber；
31- sealing cone section；32- iron-absorbing mass；33- guide post；34- holds oil groove；35- spring base hole；41- pedestal fuel feed hole；42- cone
Hole face；43- access ramp；The upper throttle orifice of 44-；45- pilot hole；The lower end 46- oil suction chamber；47- oil return hole；48- oil back chamber；49- rank
Iron seat hole；The vertical throttle orifice of 51-；Throttle orifice under 52-；53- high-pressure channel；54- center cavity；55- valve seat fuel feed hole；71- couple
Fuel feed hole；72- couple high pressure chest；73- needle pilot hole；81- guide section；82- changeover portion；83- executes section；84- cylinder oil inlet
Slot.
Specific embodiment:
Illustrate a specific embodiment of the invention below by hydraulic control common-rail injector of the invention is contained:
Embodiment 1: it is a kind of containing hydraulic control common-rail injector of the invention, as Figure 1-Figure 5, including electromagnetic actuator 1,
Upper spring 2, armature 3, armature seat 4, valve seat 5, lower spring 6, oil nozzle valve body 7, oil nozzle needle-valve 8, tight cap 9 and injector body 10,
It is equipped with sealing cone section 31, iron-absorbing mass 32, guide post 33 on the armature 3 and holds oil groove 34, the setting of sealing cone section 31 exists
Between iron-absorbing mass 32 and guide post 33, holds oil groove 34 and be arranged in guide post 33, and be located at the lower section of sealing cone section 31；It is holding in the mouth
Iron seat 4 is equipped with pedestal fuel feed hole 41, taper hole face 42, access ramp 43, upper throttle orifice 44, pilot hole 45, lower end oil suction chamber 46, returns
Oilhole 47, oil back chamber 48 and armature seat hole 49, taper hole face 42 and pilot hole 45 are coaxially disposed, and taper hole face 42 is arranged in pilot hole
The upper end of 45 upper port, access ramp 43 is communicated with pilot hole 45, in the case where armature 3 is in free state, the upper end of access ramp 43
It is communicated with oil groove 34 is held, the lower end of access ramp 43 is communicated with lower end oil suction chamber 46, and upper end and the armature seat of oil return hole 47 cheat 49 phases
Logical, the lower end of oil return hole 47 is communicated with oil back chamber 48, and oil back chamber 48 is arranged on the lower end surface of armature seat 4, and with pilot hole 45
It communicates, upper 44 one end of throttle orifice is communicated with pedestal fuel feed hole 41, and upper 44 other end of throttle orifice is communicated with lower end oil suction chamber 46, armature
3 are sleeved in the pilot hole 45 of armature seat 4 by guide post 33, are held and are formed upper pressure oil cavity between oil groove 34 and pilot hole 45
12, the sealing cone section 31 of armature 3 is hermetically located on the taper hole face 42 of armature seat 4, and iron-absorbing mass 32 is located at armature seat hole 49
In；Vertical throttle orifice 51 is equipped on valve seat 5, lower throttle orifice 52, high-pressure channel 53, center cavity 54 and valve seat fuel feed hole 55 are high
53 lower end of pressure passageway is communicated with center cavity 54, and the upper end of high-pressure channel 53 passes through lower throttle orifice 52 and 55 phase of valve seat fuel feed hole
Logical, vertical throttle orifice 51 is arranged between high-pressure channel 53 and oil back chamber 48, the pedestal on valve seat fuel feed hole 55 and armature seat 4 into
Oilhole 41 docks；In the present invention, the flow-rate ratio of vertical throttle orifice 51 and lower throttle orifice 52 under same liquid pressure is a:
0.4 < a < 1；Couple fuel feed hole 71, couple high pressure chest 72 and needle pilot hole 73, couple high pressure are equipped on oil nozzle valve body 7
Chamber 72 is arranged on the path of needle pilot hole 73, and upper end and the valve seat fuel feed hole 55 of couple fuel feed hole 71 are connected to each other, couple into
The lower end of oilhole 71 is communicated with couple high pressure chest 72；The oil nozzle needle-valve 8 includes guide section 81, changeover portion 82, executes 83 and of section
Cylinder oil-feed tank 84, the setting of changeover portion 82 is in guide section 81 and executes between section 83, and cylinder oil-feed tank 84 is obliquely set along cylinder
It sets in guide section 81 and executes between section 83, oil nozzle needle-valve 8 is sleeved in the needle pilot hole 73 of oil nozzle valve body 7, couple high pressure
Chamber 72 is communicated by cylinder oil-feed tank 84 with couple oil outlet chamber 13；Main fuel feed hole 11 is equipped in injector body 10, electromagnetism is held
Row device 1 is mounted in injector body 10, and main fuel feed hole 11 is docked with the sealing of pedestal fuel feed hole 41 on armature seat 4, and electromagnetism is held
The lower end of row device 1 is corresponding with the iron-absorbing mass 32 of armature 3；The combination of oil nozzle needle-valve 8 and oil nozzle valve body 7 is sleeved in tight cap 9,
Valve seat 5, armature seat 4 and armature 3 are successively placed on the upper surface of oil nozzle valve body 7, it is ensured that main fuel feed hole 11, pedestal fuel feed hole 41,
Valve seat fuel feed hole 55 and couple fuel feed hole 71 are collinearly arranged, and in the centrally disposed chamber 54 of lower spring 6 and oppress oil nozzle needle-valve 8
Top surface, the upper end of tight cap 9 and injector body 10 are tightly connected, and upper spring 2 is arranged between electromagnetic actuator 1 and armature 3.
This Electrocontrolled high-pressure common rail fuel injector, unlike the prior art, injector nozzle matching parts are not necessarily to Mechanical Driven to control principle
Can be achieved with quickly start and close, and can shorten simultaneously open delay and close delay time, clever structure, it can be achieved that
Trunon delay time T1 and turn-off delay time T2 are reduced in course of injection simultaneously, improves response speed, improves fuel injector work
Stability achievees the purpose that improve power density to realize the effect for reducing the injection duration, moreover it is possible to reduce in amplitude endless
The exhaust gas discharge that full burning generates, energy conservation and environmental protection.The volume and weight of fuel injector is all smaller than the fuel injector of existing structure simultaneously, energy
Meet existing high-efficient energy-saving environment friendly, miniaturization, weight diesel engine demand for development.
Claims (2)
1. a kind of armature seat of hydraulic control common-rail injector, it is characterized in that: including pedestal fuel feed hole (41), taper hole face (42), tiltedly leading to
Road (43), upper throttle orifice (44), pilot hole (45), lower end oil suction chamber (46), oil return hole (47), oil back chamber (48) and armature seat hole
(49), taper hole face (42) and pilot hole (45) are coaxially disposed, and taper hole face (42) setting is tiltedly led in the upper port of pilot hole (45)
The upper end in road (43) is communicated with pilot hole (45), in the case where armature (3) is in free state, the upper end of access ramp (43) and appearance oil groove
(34) it communicates, the lower end of access ramp (43) is communicated with lower end oil suction chamber (46), the upper end of oil return hole (47) and armature seat hole (49)
It communicating, the lower end of oil return hole (47) is communicated with oil back chamber (48), and oil back chamber (48) is arranged on the lower end surface of armature seat (4), and
It is communicated with pilot hole (45), upper throttle orifice (44) one end is communicated with pedestal fuel feed hole (41), and upper throttle orifice (44) other end is under
End oil suction chamber (46) communicates, and armature (3) is sleeved in the pilot hole (45) of armature seat (4) by guide post (33), holds oil groove
(34) upper pressure oil cavity (12) are formed between pilot hole (45), the sealing cone section (31) of armature (3) is hermetically located in rank
On the taper hole face (42) of iron seat (4), iron-absorbing mass (32) is located in armature seat hole (49), and the discharge area of upper throttle orifice (44) is less than
The discharge area of access ramp (43).
2. the discharge area of the armature seat of hydraulic control common-rail injector according to claim 1, upper throttle orifice (44) is access ramp
(43) the 1/20~1/5 of discharge area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308391.6A CN110107436A (en) | 2019-04-17 | 2019-04-17 | A kind of armature seat of hydraulic control common-rail injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308391.6A CN110107436A (en) | 2019-04-17 | 2019-04-17 | A kind of armature seat of hydraulic control common-rail injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110107436A true CN110107436A (en) | 2019-08-09 |
Family
ID=67485679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910308391.6A Withdrawn CN110107436A (en) | 2019-04-17 | 2019-04-17 | A kind of armature seat of hydraulic control common-rail injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110107436A (en) |
-
2019
- 2019-04-17 CN CN201910308391.6A patent/CN110107436A/en not_active Withdrawn
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190809 |