CN109763927A - A kind of fuel injector and engine - Google Patents
A kind of fuel injector and engine Download PDFInfo
- Publication number
- CN109763927A CN109763927A CN201910087176.8A CN201910087176A CN109763927A CN 109763927 A CN109763927 A CN 109763927A CN 201910087176 A CN201910087176 A CN 201910087176A CN 109763927 A CN109763927 A CN 109763927A
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- China
- Prior art keywords
- flap
- fuel injector
- ball sealer
- valve seat
- nozzle opening
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Abstract
The invention discloses a kind of fuel injectors, atomizer, core assembly, valve seat and first flap, atomizer is equipped with nozzle opening, core assembly includes the spool and ball sealer being connected, valve seat and ball sealer form oil duct close to the direction of nozzle opening along ball sealer, first flap is fixed in oil duct, it further include second flap, second flap is arranged in oil duct, first flap is connect with valve base sealing with second flap, second flap is arranged in first flap close to ball sealer side, make to form buffering condensation chamber between first flap and second flap, spill cavity is formed between second flap and ball sealer, first flap is equipped at least two spray-holes, second flap is equipped with an aperture；Also disclose a kind of engine, including fuel injector and inlet manifold；The present invention can improve the sealing effect to nozzle opening, prevent the leakage of air-flow, prevent blocking caused by static focus, prevent the core assembly moving contact face of fuel injector from bonding the substances such as greasy filth.
Description
Technical field
The present invention relates to fuel injector technical field more particularly to a kind of fuel injectors and engine.
Background technique
By largely testing discovery, the ignition temperature under methanol-fueled engine operating condition is higher, generation of burning
Moisture is also more compared with gasoline combustion state, and a large amount of high-temperature water vapor mixing machine oil vapours enter crankcase and pass through Oil-gas Separation system again
System, Oil-gas Separation effect is exactly heat exchange, and higher temperature, excessive burning moisture vapor and machine oil steam are via Oil-gas Separation
Condensation, makes the heat-exchange capacity which is beyond that engine oil gas separating system, therefore be mingled with the song of machine oil steam and vapor
Crankcase gas enters inlet manifold and participates in not can avoid in combustion process and polluting influence with component each in contact environment；Especially
It is the influence to fuel injector mechanism.
The crank case gases of machine oil steam and vapor that engine generates in the process of running be mingled with fuel injector not
When work, entered inside fuel injector by inlet manifold via nozzle opening, leads to the core assembly moving contact face in fuel injector
The substances such as greasy filth are bonded, the normally-open closing of fuel injector spool is influenced, changes so as to cause oil spout tolerance.
Because of methanol, its is conductive, and fuel injector is electromagnetic valve element, and coil generates electromagnetic force after being powered, push spool to
On overcome return spring power to open, while the induced electromotive force after cutting off the power generates induced current and acts on fuel injector spool
On component, under thermal extremes and energization environment, after methanol and the deoxidation of Metal contacts branch, dehydrogenation with valve seat or core assembly
Metal material occurs the formation novel substance such as oxidation reaction and is adhered on fuel injector core assembly and sealing surface of seat, be easy to cause and lets out
Dew.
Summary of the invention
In order to solve the above-mentioned technical problem, point in view of the above problems, fuel injector disclosed by the invention, the first gear of setting
The buffering condensation chamber and spill cavity that piece, second flap are formed, can be such that mixed gas flows into inside fuel injector by nozzle opening
Buffering condensation chamber so that Mixed Gas Condensation, and the sealing station between valve seat and ball sealer will not be revealed, it is after cooling
Gas-liquid mixed substance enters spill cavity, makes buffering condensation chamber that enough spaces be kept to continue to store compounding substances, and can prevent from hindering
Nozzle opening is filled in, and high-efficient, goes back preventer and enter in oil injector body.
In order to achieve the above object of the invention, the present invention provides a kind of fuel injectors, including atomizer, core assembly, valve seat
And first flap, the atomizer are equipped with nozzle opening, the core assembly includes the spool and ball sealer being connected, described
Ball sealer is arranged in the atomizer for sealing the nozzle opening, the valve seat close to described nozzle opening one end, the valve
Seat forms oil duct close to the direction of the nozzle opening along the ball sealer with the ball sealer, and the first flap is fixed at
It further include second flap in the oil duct, the second flap is arranged in the oil duct, the first flap and described second
Baffle is connect with the valve base sealing；
Second flap setting in the first flap close to the ball sealer side, make the first flap with it is described
Buffering condensation chamber is formed between second flap, the buffering condensation chamber is for accommodating and cooling down mixed gas；
Spill cavity is formed between the second flap and the ball sealer, the spill cavity is for accommodating the buffering condensation
Chamber gas-liquid mixed substance after cooling；
The first flap is equipped at least two spray-holes, and the second flap is equipped with an aperture.
Further, the cross section of the first flap and the second flap is circle, in the first flap
Spray-hole is symmetrical arranged along the center of circle of the first flap, and the aperture in the second flap is located at the circle of the second flap
The heart.
Preferably, there are four the spray-hole is set, the spray-hole and the aperture are round hole or polygonal hole.
Preferably, the valve seat be equipped with lug boss, the lug boss is prominent into the oil duct, the first flap with
The second flap is sealedly and fixedly connected with the valve seat upper projecting portion.
Further, the valve seat is equipped with the auxiliary section with ball sealer sealing cooperation, and the auxiliary section is close to institute
Ball sealer side is stated equipped with the first insulating layer.
It further, further include second insulating layer, the auxiliary section described in the ball sealer is arranged in the second insulating layer
Mating surface on.
Further, further include nozzle holder, runner tubing string is equipped in the fuel injection housing body, the runner tubing string
One end is connected to the atomizer, and the other end is connected to oil inlet, and described core assembly one end is arranged in the nozzle holder
Interior, the other end is penetrated in the atomizer, and the nozzle opening on the atomizer is arranged far from the nozzle holder
One end；
Further include return spring and bourdon tube institute, states return spring one end and the spool connects far from described ball sealer one end
It connects, the other end slides in the bourdon tube.
Further, strainer is equipped at the communication port of the oil inlet and the runner tubing string, the strainer is for filtering
Liquid into the runner tubing string.
Further, the fuel injector further includes coil, conductive terminal, and the coil is electrically connected with the conductive terminal,
The coil is arranged in the fuel injection housing body, and the conductive terminal is arranged on the outer surface of the nozzle holder.
The present invention provides a kind of engine, including fuel injector and inlet manifold, the fuel injector is spray described above
Oily device, the oil inlet on the fuel injector connect fuel pipe, described nozzle opening one end and the air inlet on the fuel injector
Manifold connection.
The implementation of the embodiments of the present invention has the following beneficial effects:
1, fuel injector disclosed by the invention, the buffering condensation chamber and spill cavity that first flap, the second flap of setting are formed,
Mixed gas can be made to flow into the buffering condensation chamber inside fuel injector by nozzle opening, so that Mixed Gas Condensation, and will not
By the sealing station leakage between valve seat and ball sealer, gas-liquid mixed substance after cooling enters spill cavity, makes to buffer condensation chamber
It keeps enough spaces to continue to store compounding substances, and obstruction nozzle opening can be prevented, and high-efficient, go back preventer and enter fuel injector
In vivo；
2, fuel injector disclosed by the invention, the insulating layer being arranged on the contact surface of valve seat and core assembly, prevents galvanic corrosion
Effect, conduction and discharge accident prevent flow leakage, prevent accident that source occurs, additionally it is possible to prevent from blocking up caused by static focus
Plug；
3, fuel injector disclosed in the utility model, the auxiliary section being arranged on valve seat can not only make the sealing of core assembly and nozzle opening
It is more stable, and facilitate the assembly of core assembly；
4, engine disclosed by the invention, when preventing fuel injector from not working, the negative pressure gas flow in inlet manifold is via oil spout
The nozzle opening of device enters the substances such as the in-house core assembly moving contact face bonding greasy filth for leading to fuel injector of fuel injector, moreover it is possible to
Blocking caused by flow leakage and static focus is prevented, the working efficiency and service life of fuel injector mechanism are improved.
Detailed description of the invention
It, below will be to attached drawing required for embodiment in order to illustrate more clearly of fuel injector of the present invention and engine
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 present invention is the combining structure schematic diagram of valve seat and core assembly；
Fig. 2 is the cross-sectional view of first flap of the present invention；
Fig. 3 is the cross-sectional view of second flap of the present invention；
Fig. 4 is the structural schematic diagram of fuel injector of the present invention；
Wherein, appended drawing reference is corresponding in figure are as follows:
1- nozzle holder, 2- atomizer, 3- core assembly, 301- spool, 302- ball sealer, 4- spray orifice, 5- flow-path tube
Column, 501- first runner tubing string, 502- second flow channel tubing string, 6- valve seat, 601- lug boss, the auxiliary section 7-, 8- return spring, 9-
Bourdon tube, 10- oil inlet, 11- strainer, 12- sealing ring, the first first flap of 13-, 1301- spray-hole, 14- conductive terminal,
The first insulating layer of 15-, 16- second insulating layer, 17- oil duct, 18- buffering condensation chamber, 19- second baffle, 1901- aperture, 20- overflow
Flow chamber.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.
Embodiment 1:
As shown in Figures 1 to 4, a kind of fuel injector, including atomizer 2, core assembly 3, valve seat 6 and first flap 13, institute
Atomizer 2 is stated equipped with nozzle opening 4, the core assembly 3 includes the spool 301 and ball sealer 302 being connected, the sealing
For sealing the nozzle opening 4, the valve seat 6 is arranged in the atomizer 2 close to described 4 one end of nozzle opening ball 302, described
Valve seat 6 forms oil duct 17, the first gear close to the direction of the nozzle opening 4 along the ball sealer 302 with the ball sealer 302
Piece 13 is fixed in the oil duct 17, further includes second flap 19, and the second flap 19 is arranged in the oil duct 17,
The first flap 13 is tightly connected with the valve seat 6 with the second flap；
The second flap 19 is arranged in the first flap 13 close to 302 side of ball sealer, makes the first gear
Buffering condensation chamber 18 is formed between piece 13 and the second flap 19, the buffering condensation chamber 18 is for accommodating and cooling down gaseous mixture
Body；
Spill cavity 20 is formed between the second flap 19 and the ball sealer 302, the spill cavity 20 is for accommodating institute
State the buffering compounding substances after cooling of condensation chamber 18；
The first flap 13 is equipped at least two spray-holes 1301, and the second flap 19 is equipped with an aperture
1901；The buffering condensation chamber 18 and spill cavity 20 of first flap 13, the formation of second flap 19 that the present invention is arranged, can make to mix
Gas is flowing into the buffering condensation chamber 18 inside fuel injector by nozzle opening 4, so that Mixed Gas Condensation, and will not be by valve seat 6
Sealing station leakage between ball sealer 302, gas-liquid mixed substance after cooling enter spill cavity 20, make to buffer condensation chamber 18
It keeps enough spaces to continue to store compounding substances, and obstruction nozzle opening 4 can be prevented, and high-efficient, go back preventer and enter oil spout
In body.
Specifically, nozzle opening 4 is equipped at least two.
The cross section of the first flap 13 and the second flap 19 is circle, the injection in the first flap 13
Hole 1301 is symmetrical arranged along the center of circle of the first flap 13, and the aperture 1901 in the second flap 19 is located at the second gear
The center of circle of piece 19.
Specifically, the valve seat 6 is equipped with the auxiliary section 7 with the ball sealer 302 sealing cooperation, the auxiliary section 7 is leaned on
Nearly 302 side of ball sealer is equipped with the first insulating layer 15；Further, auxiliary section 7 is circumscribed with 302 circumference of ball sealer
Section portion；The insulating layer that the present invention is arranged on the contact surface of valve seat 6 and core assembly 3, prevents galvanic corrosion effect, conduction and puts
Electrification prevents flow leakage, prevents accident that source occurs, additionally it is possible to prevent blocking caused by static focus.
Specifically, the auxiliary section 7 being arranged on valve seat 6 can not only make core assembly 3 and the sealing of nozzle opening 4 more stable,
And facilitate the assembly of core assembly 3.
Further, further include second insulating layer 16, the second insulating layer 16 setting the ball sealer 302 with it is described
In the mating surface of auxiliary section 7.
First insulating layer 15 and second insulating layer 16 can be arranged simultaneously, and the first insulating layer 15 can also only be arranged.
Specifically, further including nozzle holder 1, runner tubing string 5, the runner tubing string 5 are equipped in the nozzle holder 1
One end be connected to the atomizer 2, the other end is connected to oil inlet 10, and described 3 one end of core assembly is arranged in the oil spout
In device shell 1, the other end is penetrated in the atomizer 2, and the nozzle opening 4 on the atomizer 2 is arranged far from described
One end of nozzle holder 1；
Further include 9 institute of return spring 8 and bourdon tube, states 8 one end of return spring and the spool 301 far from the ball sealer
The connection of 302 one end, the other end slide in the bourdon tube 9；Further, return spring 8 and bourdon tube 9 are arranged at spray
In fuel shell 1, bourdon tube 9 is fixedly connected with nozzle holder 1.
Further, it is equipped with strainer 11 at the oil inlet 10 and the communication port of the runner tubing string 5, the strainer 11 is used
Enter the liquid in the runner tubing string 5 in filtering.
Specifically, the fuel injector further includes coil (not shown), conductive terminal 14, the coil and the conduction
Terminal 14 is electrically connected, and the coil is arranged in the nozzle holder 1, and the conductive terminal 14 is arranged in the fuel injection housing
On the outer surface of body 1.
Embodiment 2: for the preferred embodiment of embodiment 1,
It is as shown in Figures 1 to 4: a kind of fuel injector,
Including atomizer 2, core assembly 3, valve seat 6 and first flap 13, the atomizer 2 is equipped with nozzle opening 4, described
Core assembly 3 includes the spool 301 and ball sealer 302 being connected, and the ball sealer 302 is for sealing the nozzle opening 4, institute
It states valve seat 6 to be arranged in the atomizer 2 close to described 4 one end of nozzle opening, the valve seat 6 is with the ball sealer 302 along described
Ball sealer 302 forms oil duct 17 close to the direction of the nozzle opening 4, and the first flap 13 is fixed at the oil duct 17
It is interior, it further include second flap 19, the second flap 19 is arranged in the oil duct 17, the first flap 13 and described second
Baffle is tightly connected with the valve seat 6；
The second flap 19 is arranged in the first flap 13 close to 302 side of ball sealer, makes the first gear
Buffering condensation chamber 18 is formed between piece 13 and the second flap 19, the buffering condensation chamber 18 is for accommodating and cooling down gaseous mixture
Body；
Spill cavity 20 is formed between the second flap 19 and the ball sealer 302, the spill cavity 20 is for accommodating institute
State the buffering compounding substances after cooling of condensation chamber 18；
The first flap 13 is equipped at least two spray-holes 1301, and the second flap 19 is equipped with an aperture
1901；The buffering condensation chamber 18 and spill cavity 20 of first flap 13, the formation of second flap 19 that the present invention is arranged, can make to mix
Gas is flowing into the buffering condensation chamber 18 inside fuel injector by nozzle opening 4, so that Mixed Gas Condensation, and will not be by valve seat 6
Sealing station leakage between ball sealer 302, gas-liquid mixed substance after cooling enter spill cavity 20, make to buffer condensation chamber 18
It keeps enough spaces to continue to store compounding substances, and obstruction nozzle opening 4 can be prevented, and high-efficient, go back preventer and enter oil spout
In body.
Specifically, nozzle opening 4 is equipped at least two.
The cross section of the first flap 13 and the second flap 19 is circle, the injection in the first flap 13
Hole 1301 is symmetrical arranged along the center of circle of the first flap 13, and the aperture 1901 in the second flap 19 is located at the second gear
The center of circle of piece 19.
Preferably, there are four the spray-hole 1301 is set, the spray-hole 1301 and the aperture 1901 are round hole
Or polygonal hole.
Preferably, the valve seat 6 is equipped with lug boss 601, and the lug boss 601 is prominent into the oil duct 17, described
First flap 13 and the second flap 19 are sealedly and fixedly connected with 6 upper projecting portion 601 of valve seat.
Specifically, the valve seat 6 is equipped with the auxiliary section 7 with the ball sealer 302 sealing cooperation, the auxiliary section 7 is leaned on
Nearly 302 side of ball sealer is equipped with the first insulating layer 15；Further, auxiliary section 7 is circumscribed with 302 circumference of ball sealer
Section portion；The insulating layer that the present invention is arranged on the contact surface of valve seat 6 and core assembly 3, prevents galvanic corrosion effect, conduction and puts
Electrification prevents flow leakage, prevents accident that source occurs, additionally it is possible to prevent blocking caused by static focus.
Specifically, the auxiliary section 7 being arranged on valve seat 6 can not only make core assembly 3 and the sealing of nozzle opening 4 more stable,
And facilitate the assembly of core assembly 3.
Further, the two sections portion cooperated on auxiliary section 7 with ball sealer 302 is along the side far from the nozzle opening 4
It is gradually increased to the diameter of opening, the assembly of this more convenient core assembly 3 of design.
Further, further include second insulating layer 16, the second insulating layer 16 setting the ball sealer 302 with it is described
In the mating surface of auxiliary section 7.
First insulating layer 15 and second insulating layer 16 can be arranged simultaneously, and the first insulating layer 15 can also only be arranged.
Further, first insulating layer 15 and the second insulating layer 16 are that alumina ceramic coating or ceramics are poly-
Close object coating；Further, insulating layer is arranged using metal surface deposition or chemical plating method.
Specifically, further including nozzle holder 1, runner tubing string 5, the runner tubing string 5 are equipped in the nozzle holder 1
One end be connected to the atomizer 2, the other end is connected to oil inlet 10, and described 3 one end of core assembly is arranged in the oil spout
In device shell 1, the other end is penetrated in the atomizer 2, and the nozzle opening 4 on the atomizer 2 is arranged far from described
One end of nozzle holder 1；
Further include 9 institute of return spring 8 and bourdon tube, states 8 one end of return spring and the spool 301 far from the ball sealer
The connection of 302 one end, the other end slide in the bourdon tube 9；Further, return spring 8 and bourdon tube 9 are arranged at spray
In fuel shell 1, bourdon tube 9 is fixedly connected with nozzle holder 1.
Further, it is equipped with strainer 11 at the oil inlet 10 and the communication port of the runner tubing string 5, the strainer 11 is used
Enter the liquid in the runner tubing string 5 in filtering.
More specifically, the runner tubing string 5 include first runner tubing string 501 and second flow channel tubing string 502, described first
Runner tubing string 501 and the second flow channel tubing string 502 coaxial arrangement, the second flow channel tubing string 502 is far from the first runner
One end of tubing string 501 is connected to the atomizer 2, the first runner tubing string 501 far from the second flow channel tubing string 502 one
End is connected to oil inlet 10.
Further, strainer 11, the filter are equipped at the oil inlet 10 and the communication port of the second flow channel tubing string 502
Net 11 is used to filter the liquid into the second flow channel tubing string 502.
Specifically, the fuel injector further includes coil (not shown), conductive terminal 14, the coil and the conduction
Terminal 14 is electrically connected, and the coil is arranged in the nozzle holder 1, and the conductive terminal 14 is arranged in the fuel injection housing
On the outer surface of body 1.
Further, coil is arranged between runner tubing string 5 and nozzle holder 1, and coil is positioned close to spool group
3 one end of part, coil are equipped with two groups, are located at the upper and lower ends of core assembly 3, and this design improves electromagnetic field pair after powered up
The effect of core assembly 3.
Specifically, further including two groups of sealing rings 12, sealing ring 12 described in two groups is separately positioned on the nozzle holder 1
Both ends.
Difference from example 1 is that:
Preferably, there are four the spray-hole 1301 is set, the spray-hole 1301 and the aperture 1901 are round hole
Or polygonal hole.
Preferably, the valve seat 6 is equipped with lug boss 601, and the lug boss 601 is prominent into the oil duct 17, described
First flap 13 and the second flap 19 are sealedly and fixedly connected with 6 upper projecting portion 601 of valve seat.
Further, the two sections portion cooperated on auxiliary section 7 with ball sealer 302 is along the side far from the nozzle opening 4
It is gradually increased to the diameter of opening, the assembly of this more convenient core assembly 3 of design.
Further, first insulating layer 15 and the second insulating layer 16 are that alumina ceramic coating or ceramics are poly-
Close object coating；Further, insulating layer is arranged using metal surface deposition or chemical plating method.
More specifically, the runner tubing string 5 include first runner tubing string 501 and second flow channel tubing string 502, described first
Runner tubing string 501 and the second flow channel tubing string 502 coaxial arrangement, the second flow channel tubing string 502 is far from the first runner
One end of tubing string 501 is connected to the atomizer 2, the first runner tubing string 501 far from the second flow channel tubing string 502 one
End is connected to oil inlet 10.
Further, strainer 11, the filter are equipped at the oil inlet 10 and the communication port of the second flow channel tubing string 502
Net 11 is used to filter the liquid into the second flow channel tubing string 502.
Further, coil is arranged between runner tubing string 5 and nozzle holder 1, and coil is positioned close to spool group
3 one end of part, coil are equipped with two groups, are located at the upper and lower ends of core assembly 3, and this design improves electromagnetic field pair after powered up
The effect of core assembly 3.
Specifically, further including two groups of sealing rings 12, sealing ring 12 described in two groups is separately positioned on the nozzle holder 1
Both ends.
Embodiment 3: for the preferred embodiment of embodiment 2
Difference from example 1 is that:
First flap 13 and second flap 19 are that welded seal is connect with 6 upper projecting portion 601 of valve seat；
Preferably, first flap 13 and second flap 19 make first respectively with the left and right sides sealing welding of lug boss 601
Baffle 13, second flap 19 and 601 three of lug boss form buffering condensation chamber 18, second flap 19,17 inner wall of oil duct and sealing
302 three of ball forms spill cavity 20.
As shown in Fig. 2, the spray-hole 1301 in first flap 13 is around the arc-shaped hole in 13 center of circle of first flap；
As described in Figure 3, the aperture 1901 of 19 center president of second flap is round hole；
First flap 13 and second flap 19 are metal material, are equivalent to cooling fin property, can by allowing air-flow to detour
To increase air-flow and 19 time of contact of metal first flap 13 and second flap, heat dissipation condensation efficiency is improved.
Embodiment 4:
As shown in Figures 1 to 4, a kind of engine, including fuel injector and inlet manifold, described fuel injector embodiment 1 to 3
Fuel injector described in one embodiment of anticipating, the oil inlet 10 on the fuel injector connect fuel pipe, the institute on the fuel injector
4 one end of nozzle opening is stated to be connected to the inlet manifold；When this design of the invention prevents fuel injector from not working, in inlet manifold
Negative pressure gas flow enter inside fuel injector via the nozzle opening 4 of fuel injector and cause the 3 moving contact face of core assembly of fuel injector viscous
The substances such as greasy filth are tied, the working efficiency and service life of fuel injector mechanism are improved；In addition, inlet manifold internal negative pressure will form gas
It flows through each nozzle opening 4 to enter inside fuel injector, will form pressure difference in the case where multiple nozzle openings 4, increased first flap 13,
Dislocation is formed between nozzle opening 4 and second flap 19, which, which forms, is similar to condenser labyrinth form, gaseous mixture flow path
First flap 13 and second flap 19 need to be passed through and needed from the spray-hole 1301 and second flap in the first flap 13 of dislocation
It is flowed between aperture 1901 on 19, increases the surface time of contact with metal first flap 13 and second flap 19, accelerate to dissipate
Heat condensation, by substances such as the machine oil steam stopped and in cooling gaseous mixture.
Fuel injector disclosed by the invention, the buffering condensation chamber and spill cavity that first flap, the second flap of setting are formed, energy
Mixed gas is enough set to flow into the buffering condensation chamber inside fuel injector by nozzle opening, so that Mixed Gas Condensation, and will not incite somebody to action
Sealing station leakage between valve seat and ball sealer, gas-liquid mixed substance after cooling enter spill cavity, make to buffer condensation chamber guarantor
It holds enough spaces to continue to store compounding substances, and obstruction nozzle opening can be prevented, and high-efficient, go back preventer and enter oil injector body
It is interior；The insulating layer being arranged on the contact surface of valve seat and core assembly, prevents galvanic corrosion effect, conduction and discharge accident, prevents gas
Leakage is flowed, prevents accident that source occurs, additionally it is possible to prevent blocking caused by static focus；Not only may be used the auxiliary section being arranged on valve seat
Keep the sealing of core assembly and nozzle opening more stable, and facilitates the assembly of core assembly；
Engine disclosed by the invention, when preventing fuel injector from not working, the negative pressure gas flow in inlet manifold is via fuel injector
Nozzle opening enter the in-house core assembly moving contact face bonding substances such as greasy filth for leading to fuel injector of fuel injector, moreover it is possible to it is anti-
It is only blocked caused by flow leakage and static focus, improves the working efficiency and service life of fuel injector mechanism.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, therefore equivalent changes made in accordance with the claims of the present invention, are still within the scope of the present invention.
Claims (10)
1. a kind of fuel injector, including atomizer (2), core assembly (3), valve seat (6) and first flap (13), the atomizer
(2) nozzle opening (4) are equipped with, the core assembly (3) includes the spool (301) and ball sealer (302) being connected, described close
For sealing the nozzle opening (4), the valve seat (6) is arranged in the atomizer (2) close to the nozzle opening for blocking (302)
(4) one end, the valve seat (6) is with the ball sealer (302) along the direction of the ball sealer (302) close the nozzle opening (4)
It is formed oil duct (17), the first flap (13) is fixed in the oil duct (17), it is characterised in that: further includes second gear
Piece (19), in the oil duct (17), the first flap (13) and the second flap are equal for second flap (19) setting
It is tightly connected with the valve seat (6)；
Second flap (19) setting close to the ball sealer (302) side, makes described first in the first flap (13)
Between baffle (13) and the second flap (19) formed buffering condensation chamber (18), the buffering condensation chamber (18) for accommodate with
Cooling mixed gas；
Spill cavity (20) are formed between the second flap (19) and the ball sealer (302), the spill cavity (20) is for holding
Receive buffering condensation chamber (18) the gas-liquid mixed substance after cooling；
The first flap (13) is equipped at least two spray-holes (1301), and the second flap is equipped with an aperture
(1901)。
2. fuel injector according to claim 1, it is characterised in that: the first flap (13) and the second flap (19)
Cross section be circle, the spray-hole (1301) on the first flap (13) is symmetrical along the center of circle of the first flap (13)
It is arranged, the aperture (1901) on the second flap (19) is located at the center of circle of the second flap (19).
3. fuel injector according to claim 2, it is characterised in that: there are four the spray-hole (1301) sets, the injection
Hole (1301) and the aperture (1901) are round hole or polygonal hole.
4. fuel injector according to claim 1, it is characterised in that: the valve seat (6) is equipped with lug boss (601), described
It is prominent in lug boss (601) Xiang Suoshu oil duct (17), the first flap (13) and the second flap (19) with the valve
Seat (6) upper projecting portion (601) is sealedly and fixedly connected.
5. fuel injector according to claim 1, it is characterised in that: the valve seat (6) is equipped with and the ball sealer (302)
The auxiliary section (7) of cooperation is sealed, the auxiliary section (7) is equipped with the first insulating layer (15) close to the ball sealer (302) side.
6. fuel injector according to claim 5, it is characterised in that: it further include second insulating layer (16), second insulation
Layer (16) setting is in the mating surface of the ball sealer (302) and the auxiliary section (7).
7. fuel injector according to claim 1, it is characterised in that: further include nozzle holder (1), the nozzle holder
(1) runner tubing string (5) are equipped in, one end of the runner tubing string (5) is connected to the atomizer (2), the other end and oil inlet
(10) it is connected to, in the nozzle holder (1), the other end is penetrated and the atomizer for core assembly (3) one end setting
(2) in, the nozzle opening (4) on the atomizer (2) is arranged far from one end of the nozzle holder (1)；
Further include return spring (8) and bourdon tube (9) institute, states return spring (8) one end with the spool (301) far from described close
The connection of blocking (302) one end, other end sliding in the bourdon tube (9).
8. fuel injector according to claim 7, it is characterised in that: the oil inlet (10) and the runner tubing string (5)
Strainer (11) are equipped at communication port, the strainer (11) is used to filter the liquid into the runner tubing string (5).
9. fuel injector according to claim 7, it is characterised in that: the fuel injector further includes coil, conductive terminal (14),
The coil is electrically connected with the conductive terminal (14), and the coil setting is in the nozzle holder (1), the conducting end
Sub (14) are arranged on the outer surface of the nozzle holder (1).
10. a kind of engine, it is characterised in that: including fuel injector and inlet manifold, the fuel injector is that claim 1-9 is any
Fuel injector described in one, the oil inlet (10) on the fuel injector connect fuel pipe, the oil spout on the fuel injector
Hole (4) one end is connected to the inlet manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087176.8A CN109763927A (en) | 2019-01-29 | 2019-01-29 | A kind of fuel injector and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087176.8A CN109763927A (en) | 2019-01-29 | 2019-01-29 | A kind of fuel injector and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109763927A true CN109763927A (en) | 2019-05-17 |
Family
ID=66455659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910087176.8A Pending CN109763927A (en) | 2019-01-29 | 2019-01-29 | A kind of fuel injector and engine |
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| JPH0599095A (en) * | 1991-10-01 | 1993-04-20 | Hitachi Ltd | Electromagnetic type fuel injection valve |
| EP1092865A1 (en) * | 1999-10-13 | 2001-04-18 | Siemens Automotive Corporation | Fuel injection valve with multiple nozzle plates |
| US20030019958A1 (en) * | 2000-04-07 | 2003-01-30 | Siemens Automotive Corporation | Fuel injector and method of forming a hermetic seal for the fuel injector |
| US20030164412A1 (en) * | 2002-03-04 | 2003-09-04 | Aisan Kogyo Kabushiki Kaisha | Orifice plate |
| DE102004027207A1 (en) * | 2004-06-03 | 2005-12-22 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engine, has spin generating devices that are integrated, so that fuel streams in mixing chamber are displaced in spin flow, where devices are arranged upstream to valve receptacle in flow path |
| DE102004051743A1 (en) * | 2004-10-23 | 2006-04-27 | Robert Bosch Gmbh | Fuel injection valve for fuel injection installation has two slot shaped annular-gap segments, provided on spray element, which fuel lamellae are sprayable with different spraying directions, angles and thicknesses |
| EP1698768A1 (en) * | 2005-03-02 | 2006-09-06 | Hydraulik-Ring Gmbh | Injection device for the treatment of exhaust fumes motor vehicles |
| US20060200988A1 (en) * | 2005-03-11 | 2006-09-14 | Siemens Vdo Automotive Corporation | Sandwich orifice disc |
| CN104033305A (en) * | 2013-03-08 | 2014-09-10 | 日立汽车系统株式会社 | Fuel injection valve |
| JP2015063898A (en) * | 2013-09-24 | 2015-04-09 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
| CN107989731A (en) * | 2017-11-24 | 2018-05-04 | 广西卡迪亚科技有限公司 | A kind of single-hole atomization fuel injector and its preposition atomization structure |
| CN209875355U (en) * | 2019-01-29 | 2019-12-31 | 浙江吉利控股集团有限公司 | Oil sprayer and engine |
-
2019
- 2019-01-29 CN CN201910087176.8A patent/CN109763927A/en active Pending
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| JPH0599095A (en) * | 1991-10-01 | 1993-04-20 | Hitachi Ltd | Electromagnetic type fuel injection valve |
| EP1092865A1 (en) * | 1999-10-13 | 2001-04-18 | Siemens Automotive Corporation | Fuel injection valve with multiple nozzle plates |
| US20030019958A1 (en) * | 2000-04-07 | 2003-01-30 | Siemens Automotive Corporation | Fuel injector and method of forming a hermetic seal for the fuel injector |
| US20030164412A1 (en) * | 2002-03-04 | 2003-09-04 | Aisan Kogyo Kabushiki Kaisha | Orifice plate |
| DE102004027207A1 (en) * | 2004-06-03 | 2005-12-22 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engine, has spin generating devices that are integrated, so that fuel streams in mixing chamber are displaced in spin flow, where devices are arranged upstream to valve receptacle in flow path |
| DE102004051743A1 (en) * | 2004-10-23 | 2006-04-27 | Robert Bosch Gmbh | Fuel injection valve for fuel injection installation has two slot shaped annular-gap segments, provided on spray element, which fuel lamellae are sprayable with different spraying directions, angles and thicknesses |
| EP1698768A1 (en) * | 2005-03-02 | 2006-09-06 | Hydraulik-Ring Gmbh | Injection device for the treatment of exhaust fumes motor vehicles |
| US20060200988A1 (en) * | 2005-03-11 | 2006-09-14 | Siemens Vdo Automotive Corporation | Sandwich orifice disc |
| CN104033305A (en) * | 2013-03-08 | 2014-09-10 | 日立汽车系统株式会社 | Fuel injection valve |
| JP2015063898A (en) * | 2013-09-24 | 2015-04-09 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
| CN107989731A (en) * | 2017-11-24 | 2018-05-04 | 广西卡迪亚科技有限公司 | A kind of single-hole atomization fuel injector and its preposition atomization structure |
| CN209875355U (en) * | 2019-01-29 | 2019-12-31 | 浙江吉利控股集团有限公司 | Oil sprayer and engine |
Non-Patent Citations (1)
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| 方晓敏;李孝禄;: "一种新型乙醇/汽油在线混合喷油器的研究", 南昌大学学报(工科版), no. 01, pages 68 - 71 * |
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