CN109707546A - A kind of oil control valve out of electric-controlled fuel injector - Google Patents
A kind of oil control valve out of electric-controlled fuel injector Download PDFInfo
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- CN109707546A CN109707546A CN201811632905.5A CN201811632905A CN109707546A CN 109707546 A CN109707546 A CN 109707546A CN 201811632905 A CN201811632905 A CN 201811632905A CN 109707546 A CN109707546 A CN 109707546A
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Abstract
Go out oil control valve the present invention relates to a kind of electric-controlled fuel injector, to realize the response time for shortening control valve.Comprising: the oil injector body from top to bottom set gradually, oil inlet orifice plate and needle-valve body；The end face of the needle-valve body towards the oil inlet orifice plate is respectively formed with control cavity volume and high pressure fuel chamber；It is sequentially arranged to form oil input channel and back oil road between the oil injector body and the oil inlet orifice plate, the oil input channel is respectively communicated to the control cavity volume and the high pressure fuel chamber；Electromagnetic valve component for being powered or powering off and the fuel-displaced control valve group for be turned on or off the control cavity volume and the back oil road are installed in the oil injector body；The high pressure fuel of the needle-valve body is intracavitary to be equipped with fuel injector lower body component, fuel-displaced control valve group includes the ball valve guide rod for making to be formed the gap or formation sealing that pass through for the intracavitary fuel oil of high pressure fuel between fuel injector lower body component and the cavity wall of high pressure fuel chamber, and ball valve guide rod is the elongate rod with sealing spherical surface.
Description
Technical field
The present invention relates to low-speed diesel engine field, specifically a kind of electric-controlled fuel injector goes out oil control valve.
Background technique
A large amount of harmful substance, predominantly NOX are given off in burning with the diesel engine of fossil fuel as a source of power
With SOX etc..With higher and higher to the attention degree of environmental problem both at home and abroad, international and national is discharged marine diesel and is formulated
More stringent regulation.The 57th environmental protection of IMO can discharge marine diesel and be made that new regulation, according to new regulation 2016
The low-speed diesel engine to dispatch from the factory after year, needs III standard of strict implement Tire.For low-speed diesel engine, electric-controlled co-rail technology energy
It is effectively improved the burning condition of fuel oil, is that low-speed diesel engine realizes III standard of Tire most to reduce the discharge of harmful substance
One of effective method.So it is imperative for developing low speed electric-controlled co-rail technology.
Execution unit of the electronic control common rail oil sprayer as electronic control common rail system, performance of the reliability to electronic control common rail system
It is affected.Therefore, the electric-controlled fuel injector for developing a kind of good reliability is the main problem of common rail system research.Due to it is domestic this
Item technology development is later, and with external advanced technology there are biggish gap, key technology is stronger to external dependence, lacks
Core competitiveness.And researching and developing, there is the electronic control common rail oil sprayer technology of China's independent intellectual property right will effectively change this
Status.
Requirement of the electronic control common rail system for electronic control common rail oil sprayer be timing, it is quantitative clean fuel oil is sprayed, and shape
At good atomizing effect to be formed with the condition for being conducive to fuel burning.Therefore, how by shortening fuel injector internal valve member
Response time reach to oil mass and injection timing be precisely controlled be restrict electronic control common rail oil sprayer development principal element it
One.
Summary of the invention
Go out oil control valve the purpose of the present invention is to provide a kind of electric-controlled fuel injector, to realize the response for shortening control valve
Time.
The technical solution of the present invention is as follows:
Go out oil control valve the present invention provides a kind of electric-controlled fuel injector, comprising:
Oil injector body, oil inlet orifice plate and the needle-valve body from top to bottom set gradually；
The end face of the needle-valve body towards the oil inlet orifice plate is respectively formed with control cavity volume and high pressure fuel chamber；
It is sequentially arranged to form oil input channel and back oil road between the oil injector body and the oil inlet orifice plate, the oil input channel
Outlet is respectively communicated to the control cavity volume and the high pressure fuel chamber by oil circuit；
Electromagnetic valve component for being powered or powering off and described for being turned on or off is installed in the oil injector body
Control the fuel-displaced control valve group of cavity volume and the back oil road；
The high pressure fuel of the needle-valve body is intracavitary to be equipped with fuel injector lower body component；
The fuel-displaced control valve group includes to make between the fuel injector lower body component and the cavity wall of the high pressure fuel chamber
Form the gap passed through for the intracavitary fuel oil of the high pressure fuel or the ball valve guide rod for forming sealing, the ball valve guide rod be with
Seal the elongate rod of spherical surface.
Preferably, drive the ball valve guide rod that the control cavity volume and described time is connected when the electromagnetic valve component is powered
Oil duct, the heavy oil controlled in cavity volume are leaked by the back oil road, to reduce the oil pressure in the control cavity volume；?
After oil pressure in the control cavity volume reduces, the fuel injector lower body component is made in the intracavitary fuel oil oil pressure of the high pressure fuel
It is moved up under, to form the gap passed through for the intracavitary heavy oil of high pressure fuel between the cavity wall of the high pressure fuel chamber；
When the electromagnetic valve component powers off, the ball valve guide rod disconnects the control cavity volume and the back oil road, to rise
Oil pressure in the high control cavity volume；After the oil pressure in the control cavity volume increases, the fuel injector lower body component exists
It is moved down under fuel oil oil pressure effect in the control cavity volume, to form sealing between the cavity wall of the high pressure fuel chamber.
Preferably, the electromagnetic valve component includes:
Compression plug screw, solenoid valve, sleeve and the solenoid valve valve pocket from top to bottom set gradually；
The armature being mounted in the sleeve, the armature are arranged relative to the solenoid valve；
The control valve core being mounted in the solenoid valve valve pocket, the control valve core partially pass through the sleeve and connect institute
State armature；
The magnetic valve spring being set in the control valve core；
Armature described in the electromagnetic attracting force that the solenoid valve generates when powering on drives the control valve core to move up, described
The bounce generated when electric under solenoid valve by the magnetic valve spring pushes the control valve core to move down.
Preferably, it has been provided projectingly the first positive stop lug boss on the control valve core outer surface, the magnetic valve spring is limited
Position is between first positive stop lug boss and the sleeve.
Preferably, the oil inlet orifice plate is equipped with the oil outlet being connected to the control cavity volume, the oil control valve out
Component further include:
From top to bottom set gradually with the solenoid valve valve pocket it is integrally formed go out oil control valve valve pocket and fuel-displaced orifice plate；
The fuel-displaced orifice plate is equipped with the fuel-displaced throttle orifice being connected to the oil outlet, the oil outlet chamber being connected to the fuel-displaced throttle orifice,
And the flowline being connected to the oil outlet chamber；The flowline is connected to the back oil road；
The ball valve guide rod is mounted in the oil control valve valve pocket out, and the ball valve guide rod is relative to the control valve
Core and fuel-displaced throttle orifice setting；
After the solenoid valve powers on and the control valve core is driven to move up, the ball valve guide rod is in the control volume
It is moved up under intracavitary oil pressure effect, the fuel-displaced throttle orifice is made to be connected to the oil outlet chamber, the combustion in the control cavity volume
Oil passes sequentially through the oil outlet, the fuel-displaced throttle orifice, the oil outlet chamber and the flowline and flows into the back oil road；
After magnetic valve spring pushes the control valve core to move down, the control valve core push the ball valve guide rod to
Lower movement, closes the outlet of the fuel-displaced throttle orifice, block the fuel oil entered in the fuel-displaced throttle orifice enter to it is described go out
In oil pocket.
Preferably, the fuel injector lower body component includes:
Plunger bushing is controlled, the end face of control plunger bushing towards the oil inlet orifice plate, which offers, is connected to the high compression ignition
The through-hole of oil pocket；
Partially pass through the needle-valve being inserted into after the high pressure fuel chamber in the through-hole；The hole of the needle-valve, the through-hole
It is enclosed jointly between wall and the oil inlet orifice plate and sets to form the control cavity volume；
The pressure spring being set on the needle-valve, the pressure spring are limited in the control plunger bushing and the needle-valve
Between the second positive stop lug boss being provided projectingly on outer surface；
After the fuel oil part pressure release in the control cavity volume, the needle-valve is made in the intracavitary oil pressure of the high pressure fuel
Moved up under, with form the gap at the outlet cavity wall of the high pressure fuel chamber；In the control cavity volume
After fuel pressurization, the needle-valve moves down under the elastic force effect of the oil pressure and the pressure spring of the control cavity volume,
To form sealing between the outlet cavity wall of the high pressure fuel chamber.
Preferably, the outer surface that the needle-valve is located at the intracavitary part of the high pressure fuel is equipped with axial grooving, described
The position adjacent with the axial grooving is equipped with first conical surface on the outer surface of needle-valve, at the outlet cavity wall of the high pressure fuel chamber
Be formed as second conical surface mutually sealed with first conical surface；
When the needle-valve moves up, first conical surface and second conical surface form the gap, the high pressure
Fuel oil in fuel chamber passes through the axial grooving and gap outflow；
When the needle-valve moves down, first conical surface and second conical surface are formed and are sealed.
Preferably, the oil control valve out is used for low-speed diesel engine.
The invention has the benefit that
1. integrated ball valve guide rod structure is simple, easy to process.
2. the design of monoblock type is so that ball valve guide rod is directly contacted with fuel-displaced orifice plate, between avoiding between steel ball and seat surface
Gap contact, effectively increases sealing reliability.
3. the design of elongate rod reduces the quality of ball valve guide rod, the movement inertia of spool is reduced, steel ball is reduced and falls
Seat and the time delay opened reduce the response time that valve opens and closes process, are conducive to accurately control fuel injector oil spout
Time and distributive value.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the cooperation schematic diagram gone out between oil control valve valve pocket, fuel-displaced orifice plate and oil inlet orifice plate of the invention；
Fig. 3 forms the structural schematic diagram of sealing between needle-valve and needle-valve body；
Fig. 4 is electromagnetic valve component and fuel-displaced control valve group in the intracorporal cooperation schematic diagram of fuel injector；
Fig. 5 is electromagnetic valve component in the intracorporal cooperation schematic diagram of fuel injector；
Description of symbols: 1- oil injector body；3- compresses plug screw；4- solenoid valve；5- armature；6- fixing screws；7- sleeve；
8- magnetic valve spring；9- control valve core；The first positive stop lug boss of 91-；10- solenoid valve valve pocket；11- goes out oil control valve valve pocket；12- ball
Valve-stem guide；The fuel-displaced orifice plate of 13-；105- fuel-displaced throttle orifice；106- oil outlet chamber；107- flowline；14- oil inlet orifice plate；142- oil inlet
Throttle orifice；15- needle-valve body；Second conical surface of 151-；16- controls plunger bushing；17- needle-valve；The second positive stop lug boss of 171-；172- first
The conical surface；18- pressure spring；102- oil outlet；103- controls cavity volume；104- high pressure fuel chamber；108- oil input channel.
Specific embodiment
Referring to figs. 1 to Fig. 5, go out oil control valve the present invention provides a kind of electric-controlled fuel injector, comprising: from top to bottom successively
Oil injector body 1, oil inlet orifice plate 14 and the needle-valve body 15 of setting；The needle-valve body 15 is distinguished towards the end face of the oil inlet orifice plate 14
It is formed with control cavity volume 103 and high pressure fuel chamber 104；Successively aperture between the oil injector body 1 and the oil inlet orifice plate 14
It forms oil input channel 108 and back oil road, the outlet of the oil input channel 108 is respectively communicated to the control cavity volume 103 by oil circuit
With the high pressure fuel chamber 104；Electromagnetic valve component for being powered or powering off is installed and for leading in the oil injector body 1
On-off opens the fuel-displaced control valve group of the control cavity volume 103 and the back oil road；The high pressure fuel of the needle-valve body 15
Be equipped with fuel injector lower body component in chamber 104, the fuel-displaced control valve group include make the fuel injector lower body component with it is described
The ball in the gap or formation sealing that pass through for the fuel oil in the high pressure fuel chamber 104 is formed between the cavity wall of high pressure fuel chamber 104
Valve-stem guide 12, the ball valve guide rod 12 are the elongate rod with sealing spherical surface.
Specifically, the arc to be formed and be sealed to the outlet of fuel-displaced throttle orifice 105 is processed by the end in elongate rod
Shape face or hemisphere face.In this way, elongate rod may be implemented to position, and be formed in elongate rod for ball valve guide rod 12
Hemisphere face can then play the effect of sealing.Ball valve guide rod for ball valve guide rod compared with the existing technology, in the application
12 can reduce by one of production process in production.
The electromagnetic valve component drives the ball valve guide rod 12 that the control cavity volume 103 and the oil return is connected when being powered
Road, the heavy oil controlled in cavity volume 103 are leaked by the back oil road, to reduce the oil in the control cavity volume 103
Pressure；After the oil pressure in the control cavity volume 103 reduces, the fuel injector lower body component is in the high pressure fuel chamber 104
Fuel oil oil pressure effect under move up, between the cavity wall of the high pressure fuel chamber 104 formed in high pressure fuel chamber 104
The gap that heavy oil passes through；When the electromagnetic valve component powers off, the ball valve guide rod 12 disconnects the control cavity volume 103 and described
Back oil road, to increase the oil pressure in the control cavity volume 103；It is described after the oil pressure in the control cavity volume 103 increases
Fuel injector lower body component it is described control cavity volume 103 in fuel oil oil pressure effect under move down, with the high pressure fuel
Sealing is formed between the cavity wall of chamber 104.
Referring to Fig.1, Fig. 2, Fig. 4, when fuel oil enters to oil inlet orifice plate 14 by oil input channel 108, fuel oil is split up into 2 tunnels,
The first via is the main fuel flowed into high pressure fuel chamber 104, and the second tunnel is the oil inlet section by being arranged on oil inlet orifice plate 14
Discharge orifice 142 flows into the control fuel oil in control cavity volume 103.
Wherein, in the application, the oil injector body 1, the oil inlet orifice plate 14 and the needle-valve body 15 pass through the tight cap of body
It is compressed.
Wherein, for the above-mentioned oil control valve out of the application, main application is in low-speed diesel engine peculiar to vessel.It is specific next
It says, should go out oil control valve may be implemented the fuel-displaced control to fuel oil (heavy oil or diesel oil).
Referring to figs. 1 to Fig. 5, the electromagnetic valve component include: the compression plug screw 3 from top to bottom set gradually, solenoid valve 4,
Sleeve 7 and solenoid valve valve pocket 10；The armature 5 being mounted in the sleeve 7, the armature 5 are arranged relative to the solenoid valve 4；
The control valve core 9 being mounted in the solenoid valve valve pocket 10, the control valve core 9 partially pass through described in the sleeve 7 and connection
Armature 5；The magnetic valve spring 8 being set in the control valve core 9；The electromagnetic attracting force institute that the solenoid valve 4 generates when powering on
Stating armature 5 drives the control valve core 9 to move up, and the solenoid valve 4 passes through the anti-of the magnetic valve spring 8 generation when lower electric
Elastic force pushes the control valve core 9 to move down.Wherein, the part that plug screw 3 is used to be mounted in 1 mesoporous of oil injector body is compressed
(solenoid valve 4, solenoid valve valve pocket 10, goes out oil control valve valve pocket 11 and fuel-displaced orifice plate 13 at sleeve 7) is compressed.Solenoid valve 4 and spray
The electromagnetism valve seals for improving sealing performance are equipped between oily body 1, which is used for and connect with oil injector body 1
Fuel injector upper body abuts against.Armature 5 is fixed together by fixing screws 6 and control valve core 9, in this way, armature 5 is by electromagnetism
When the attraction of the electromagnetic force of valve 4 moves up, control valve core 9 can be driven to move up；In control valve core 9 in magnetic valve spring
When moving down under the action of 8, control valve core 9 is moved down with moving armature 5.
As shown in figure 5, protrusion is set on 9 outer surface of control valve core in order to improve the limit effect of magnetic valve spring 8
It is equipped with the first positive stop lug boss 91, the magnetic valve spring 8 is limited between first positive stop lug boss 91 and the sleeve 7.
It, can be by changing adjustment gasket meanwhile in magnetic valve spring 8 towards adjustment gasket is equipped between first positive stop lug boss 91
Thickness adjusts the height of sleeve, to compensate the accumulated error of machining.
Referring to figs. 1 to Fig. 5, the oil inlet orifice plate 14 is equipped with the oil outlet 102 being connected to the control cavity volume 103,
The fuel-displaced control valve group include: from top to bottom set gradually with the integrally formed fuel-displaced control of the solenoid valve valve pocket 10
Valve valve pocket 11 and fuel-displaced orifice plate 13；The fuel-displaced orifice plate 13 is equipped with the fuel-displaced throttle orifice 105 being connected to the oil outlet 102,
The oil outlet chamber 106 being connected to the fuel-displaced throttle orifice 105, and the flowline 107 being connected to the oil outlet chamber 106；It is described go out
Oil pipe 107 is connected to the back oil road；The ball valve guide rod 12 being mounted in the oil control valve valve pocket 11 out, the ball valve guide rod 12
It is arranged relative to the control valve core 9 and the fuel-displaced throttle orifice 105；It is powered in the solenoid valve 4 and drives the control valve core 9
After moving up, the ball valve guide rod 12 moves up under the oil pressure effect in the control cavity volume 103, makes described fuel-displaced
Throttle orifice 105 is connected to the oil outlet chamber 106, and the fuel oil in the control cavity volume 103 passes sequentially through the oil outlet 102, institute
Fuel-displaced throttle orifice 105, the oil outlet chamber 106 and the flowline 107 is stated to flow into the back oil road；In magnetic valve spring 8
After pushing the control valve core 9 to move down, the control valve core 9 pushes the ball valve guide rod 12 to move down, described in closing
The outlet of fuel-displaced throttle orifice 105 blocks the fuel oil entered in the fuel-displaced throttle orifice 105 to enter in the oil outlet chamber 106.
Wherein, solenoid valve valve pocket 10 and out oil control valve valve pocket 11 integrated molding form support guide set, due to the support
Guide sleeve designs between fuel-displaced orifice plate 13 and solenoid valve 4, makes working region of the solenoid valve 4 far from heavy oil in fuel injector, right
For solenoid valve 4, farther out due to its working region apart from heavy oil, the heat that heavy oil can be made to generate transmits as few as possible
To solenoid valve 4, prevent solenoid valve 4 from overheating.Meanwhile support guide set is designed as idol with ball valve guide rod 12 and control valve core 9 respectively
Part cooperation makes to reduce by the fuel oil in couple gap and cooling oil leakage quantity, by the dynamic sealing between couple by solenoid valve 4 with
The working region of fuel oil is mutually isolated.
Preferably, referring to Fig. 5, the fuel injector lower body component includes: control plunger bushing 16,16 court of control plunger bushing
The through-hole for being connected to the high pressure fuel chamber 104 is offered to the end face of the oil inlet orifice plate 14, a part passes through the high pressure
The needle-valve 17 being inserted into after fuel chamber 104 in the through-hole；The hole wall and the oil inlet orifice plate 14 of the needle-valve 17, the through-hole
Between enclose jointly and set to form the control cavity volume 103；The pressure spring 18 being set on the needle-valve 17, the pressure spring
18 are limited between the second positive stop lug boss 171 being provided projectingly on the control plunger bushing 16 and 17 outer surface of the needle-valve；?
After fuel oil part pressure release in the control cavity volume 103, oil pressure effect of the needle-valve 17 in the high pressure fuel chamber 104
Under move up, with form the gap at the outlet cavity wall of the high pressure fuel chamber 104；In the control cavity volume 103
After interior fuel pressurization, elastic force effect of the needle-valve 17 in the oil pressure and the pressure spring 18 of the control cavity volume 103
Under move down, between the outlet cavity wall of the high pressure fuel chamber 104 formed sealing.
Needle-valve 17, control plunger bushing 16, pressure spring 18 are mounted in the mesoporous of needle-valve body 15 and nozzle, control plunger bushing
16 upper surfaces are bonded with 14 lower end surface of oil inlet orifice plate, and lower end is supported by pressure spring 18, and pressure spring 18 is supported on needle-valve 17
In intermediate spring support seat, 17 upper end outer round surface of needle-valve and control 16 internal circular surfaces of plunger bushing are couple cooperation.
Specifically, referring to Fig. 3, the needle-valve 17, which is located on the outer surface of the part in the high pressure fuel chamber 104, to be set
There is an axial grooving, the position adjacent with the axial grooving is equipped with first conical surface 172, the height on the outer surface of the needle-valve 17
Be formed as second conical surface 151 sealed with first conical surface, 172 phase at the outlet cavity wall of compression ignition oil pocket 104；In the needle-valve
17 when moving up, and first conical surface 172 and second conical surface 151 form the gap, in the high pressure fuel chamber 104
Fuel oil pass through the axial grooving and gap outflow；When the needle-valve 17 moves down, first conical surface 172 with
Second conical surface 151 forms sealing.
Above-mentioned electric-controlled fuel injector of the invention mainly includes that the energization of solenoid valve 4 and solenoid valve 4 are not powered on two when in use
Kind state.
When solenoid valve 4 is not yet powered, the effect of armature 5, control valve core 9 and ball valve guide rod 12 in magnetic valve spring 8
Under, the bulb of ball valve guide rod 12 is pressed on to the sealed seat surface of fuel-displaced orifice plate 13, sealed seat surface is made to be in sealing state.Needle-valve 17
It is in close state under the action of high pressure fuel hydraulic coupling and pressure spring 18.
When needing fuel injector to carry out oil spout, solenoid valve 4 generates electromagnetic force, armature 5 and the control being attached thereto after being powered
Spool 9 is by electromagnetic force, the effect of spring force, gravity, since electromagnetic force is greater than the resultant force of gravity and spring force, armature 5
Drive control valve core 9 that the active force of magnetic valve spring 8 is overcome to move upwards under the suction from solenoid valve 4；It is controlling
When spool 9 moves upwards, the pressing force of 12 upper end of ball valve guide rod reduces, and under the action of hydraulic force of lower end, ball valve guide rod 12 is upward
Movement, lower end sealed seat surface are opened, control high pressure fuel in cavity volume 103 by oil outlet 102 and fuel-displaced throttle orifice 105 from
Sealed seat surface outflow, control cavity volume 103 in fuel pressure gradually decrease, needle-valve 17 under the action of the hydraulic coupling of lower end, gram
It takes 18 active force of pressure spring and moves upwards the gap that formation is outflowed for high pressure fuel between the cavity wall of high pressure fuel chamber 104,
At this point, injection process starts.
When fuel injector stops oil spout, solenoid valve 4 is powered off, and electromagnetic force disappears, and control valve core 9 and armature 5 are in solenoid valve bullet
It is moved downward under the action of spring 8, the reset force that spring generates passes to ball valve guide rod 12, ball valve guide rod 12 by control valve core 9
Lower end surface seals fuel-displaced throttle orifice 105, and the high pressure fuel in fuel injector is again introduced into sealing state, the height in oil input channel 108
Compression ignition oil (diesel oil) constantly enters in the control cavity volume 103 and high pressure fuel chamber 104 of fuel injector, controls cavity volume 103
Interior fuel pressure gradually rises, and under the double action of hydraulic coupling and spring force, needle-valve 17 moves downward to form sealing, oil spout
Process terminates.
The present invention has the advantages that
1. 12 structure of integrated ball valve guide rod is simple, easy to process.
2. the design of monoblock type so that ball valve guide rod 12 is directly contacted with fuel-displaced orifice plate 13, avoids between steel ball and seat surface
Gap-contact, effectively increase sealing reliability.
3. the design of elongate rod reduces the quality of ball valve guide rod 12, the movement inertia of control valve core 9 is reduced, is reduced
Time delay that steel ball is taken a seat and opened reduces the response time that valve opens and closes process, is conducive to accurately control oil spout
Device injection time and distributive value.
Claims (8)
1. a kind of electric-controlled fuel injector goes out oil control valve characterized by comprising
Oil injector body (1), oil inlet orifice plate (14) and the needle-valve body (15) from top to bottom set gradually；
The end face of the needle-valve body (15) towards the oil inlet orifice plate (14) is respectively formed with control cavity volume (103) and high compression ignition
Oil pocket (104)；
It is sequentially arranged to form oil input channel (108) and back oil road between the oil injector body (1) and the oil inlet orifice plate (14), it is described
The outlet of oil input channel (108) is respectively communicated to the control cavity volume (103) and the high pressure fuel chamber (104) by oil circuit；
Electromagnetic valve component for being powered or powering off is installed and for the control that is turned on or off in the oil injector body (1)
The fuel-displaced control valve group of cavity volume (103) processed and the back oil road；
Fuel injector lower body component is equipped in the high pressure fuel chamber (104) of the needle-valve body (15)；
The fuel-displaced control valve group includes to make between the fuel injector lower body component and the cavity wall of the high pressure fuel chamber (104)
Form the ball valve guide rod (12) in the gap or formation sealing that pass through for the fuel oil in the high pressure fuel chamber (104), the ball valve
Guide rod (12) is the elongate rod with sealing spherical surface.
2. electric-controlled fuel injector according to claim 1 goes out oil control valve, which is characterized in that
The electromagnetic valve component drives the ball valve guide rod (12) that the control cavity volume (103) and the oil return is connected when being powered
Road, the heavy oil controlled in cavity volume (103) are leaked by the back oil road, to reduce in the control cavity volume (103)
Oil pressure；After the oil pressure in control cavity volume (103) reduces, the fuel injector lower body component is in the high pressure fuel chamber
(104) it is moved up under the fuel oil oil pressure effect in, to be formed between the cavity wall of the high pressure fuel chamber (104) for high pressure fuel
The gap that heavy oil in chamber (104) passes through；
When the electromagnetic valve component powers off, the ball valve guide rod (12) disconnects the control cavity volume (103) and the back oil road,
To increase the oil pressure in control cavity volume (103)；After the oil pressure in control cavity volume (103) increases, the spray
Oily device lower body component it is described control cavity volume (103) in fuel oil oil pressure effect under move down, with the high pressure fuel
Sealing is formed between the cavity wall of chamber.
3. electric-controlled fuel injector according to claim 1 goes out oil control valve, which is characterized in that the electromagnetic valve component packet
It includes:
Compression plug screw (3), solenoid valve (4), sleeve (7) and the solenoid valve valve pocket (10) from top to bottom set gradually；
The armature (5) being mounted in the sleeve (7), the armature (5) are arranged relative to the solenoid valve (4)；
The control valve core (9) being mounted in the solenoid valve valve pocket (10), the control valve core (9) partially pass through the sleeve
(7) and the armature (5) are connected；
The magnetic valve spring (8) being set on the control valve core (9)；
Armature (5) described in the electromagnetic attracting force that the solenoid valve (4) generates when being powered drives control valve core (9) Xiang Shangyi
It is dynamic, the bounce promotion control valve core (9) generated when the solenoid valve (4) powers off by the magnetic valve spring (8) to
Lower movement.
4. electric-controlled fuel injector according to claim 3 goes out oil control valve, which is characterized in that the control valve core (9) is outside
It has been provided projectingly on surface the first positive stop lug boss (91), the magnetic valve spring (8) is limited in first positive stop lug boss
(91) between the sleeve (7).
5. electric-controlled fuel injector according to claim 3 goes out oil control valve, which is characterized in that on the oil inlet orifice plate (14)
Equipped with the oil outlet (102) being connected to control cavity volume (103), the fuel-displaced control valve group further include:
What is from top to bottom set gradually is integrally formed oil control valve valve pocket (11) and fuel-displaced out with the solenoid valve valve pocket (10)
Orifice plate (13)；The fuel-displaced orifice plate (13) is equipped with the fuel-displaced throttle orifice (105) that is connected to the oil outlet (102), and described
The oil outlet chamber (106) of fuel-displaced throttle orifice (105) connection, and the flowline (107) being connected to the oil outlet chamber (106)；It is described
Flowline (107) is connected to the back oil road；
Ball valve guide rod (12) is mounted in oil control valve valve pocket (11) out, and the ball valve guide rod (12) is relative to the control
Spool (9) processed and the fuel-displaced throttle orifice (105) setting；
After the solenoid valve (4) powers on and the control valve core (9) is driven to move up, the ball valve guide rod (12) is in the control
It is moved up under oil pressure effect in cavity volume (103) processed, the fuel-displaced throttle orifice (105) is made to be connected to the oil outlet chamber (106),
It is described control cavity volume (103) in fuel oil pass sequentially through the oil outlet (102), the fuel-displaced throttle orifice (105), it is described go out
Oil pocket (106) and the flowline (107) flow into the back oil road；
After magnetic valve spring (8) push the control valve core (9) to move down, the control valve core (9) pushes the ball valve
Guide rod (12) moves down, and closes the outlet of the fuel-displaced throttle orifice (105), and blocking enters to the fuel-displaced throttle orifice (105)
In fuel oil enter in the oil outlet chamber (106).
6. electric-controlled fuel injector according to claim 5 goes out oil control valve, which is characterized in that the fuel injector lower body component
Include:
It controls plunger bushing (16), the end face of control plunger bushing (16) towards the oil inlet orifice plate (14), which offers, is connected to institute
State the through-hole of high pressure fuel chamber (104)；
Partially pass through the needle-valve (17) being inserted into after the high pressure fuel chamber (104) in the through-hole；It is the needle-valve (17), described
It is enclosed jointly between the hole wall of through-hole and the oil inlet orifice plate (14) and sets to form the control cavity volume (103)；
The pressure spring (18) being set on the needle-valve (17), the pressure spring (18) are limited in the control plunger bushing
(16) and on the needle-valve (17) outer surface between the second positive stop lug boss (171) being provided projectingly；
After the fuel oil part pressure release in control cavity volume (103), the needle-valve (17) is in the high pressure fuel chamber (104)
Moved up under interior oil pressure effect, with form the gap at the outlet cavity wall of the high pressure fuel chamber (104)；Described
After controlling the fuel pressurization in cavity volume (103), oil pressure and the tune of the needle-valve (17) in control cavity volume (103)
It is moved down under the elastic force effect of pressing spring (18), to form sealing between the outlet cavity wall of the high pressure fuel chamber (104).
7. electric-controlled fuel injector according to claim 6 goes out oil control valve, which is characterized in that the needle-valve (17) is located at institute
The outer surface for stating the part in high pressure fuel chamber (104) is equipped with axial grooving, on the outer surface of the needle-valve (17) with it is described
The adjacent position of axial grooving is equipped with first conical surface (172), is formed as at the outlet cavity wall of the high pressure fuel chamber (104) and institute
State second conical surface (151) that first conical surface (172) mutually seals；
When the needle-valve (17) moves up, first conical surface (172) and second conical surface (151) formed it is described between
Gap, the fuel oil in the high pressure fuel chamber (104) pass through the axial grooving and gap outflow；
When the needle-valve (17) moves down, first conical surface (172) and second conical surface (151) form and seal.
8. electric-controlled fuel injector according to any one of claims 1 to 7 goes out oil control valve, which is characterized in that described fuel-displaced
Control valve is used for low-speed diesel engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632905.5A CN109707546A (en) | 2018-12-29 | 2018-12-29 | A kind of oil control valve out of electric-controlled fuel injector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811632905.5A CN109707546A (en) | 2018-12-29 | 2018-12-29 | A kind of oil control valve out of electric-controlled fuel injector |
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| CN109707546A true CN109707546A (en) | 2019-05-03 |
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| CN201811632905.5A Pending CN109707546A (en) | 2018-12-29 | 2018-12-29 | A kind of oil control valve out of electric-controlled fuel injector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255552A (en) * | 2020-03-18 | 2020-06-09 | 上海中船三井造船柴油机有限公司 | Oil sprayer of marine low-speed diesel engine |
| WO2021057018A1 (en) * | 2019-09-26 | 2021-04-01 | 重庆红江机械有限责任公司 | Electronic control common-rail-type heavy oil injector |
| CN114076058A (en) * | 2021-12-15 | 2022-02-22 | 北油电控燃油喷射系统(天津)有限公司 | Large-flow oil injector with central solenoid valve |
| CN115234417A (en) * | 2022-07-29 | 2022-10-25 | 重庆红江机械有限责任公司 | Plane control valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984247A (en) * | 2010-11-04 | 2011-03-09 | 中国第一汽车集团公司 | Pressurizing common-rail oil injection system |
| CN201944351U (en) * | 2011-03-11 | 2011-08-24 | 厦门松霖科技有限公司 | Water path non-return device |
| WO2011150543A1 (en) * | 2010-06-03 | 2011-12-08 | 无锡开普动力有限公司 | Injection valve for electric control oil injector |
| CN103644056A (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 | Common rail system oil atomizer |
| CN106640454A (en) * | 2017-01-18 | 2017-05-10 | 哈尔滨工程大学 | Double-path oil feeding hole plate type electric control oil sprayer with engraved groove |
| CN206681891U (en) * | 2017-04-28 | 2017-11-28 | 重庆红江机械有限责任公司 | A kind of low leakage super-pressure electric-controlled fuel injector |
-
2018
- 2018-12-29 CN CN201811632905.5A patent/CN109707546A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011150543A1 (en) * | 2010-06-03 | 2011-12-08 | 无锡开普动力有限公司 | Injection valve for electric control oil injector |
| CN101984247A (en) * | 2010-11-04 | 2011-03-09 | 中国第一汽车集团公司 | Pressurizing common-rail oil injection system |
| CN201944351U (en) * | 2011-03-11 | 2011-08-24 | 厦门松霖科技有限公司 | Water path non-return device |
| CN103644056A (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 | Common rail system oil atomizer |
| CN106640454A (en) * | 2017-01-18 | 2017-05-10 | 哈尔滨工程大学 | Double-path oil feeding hole plate type electric control oil sprayer with engraved groove |
| CN206681891U (en) * | 2017-04-28 | 2017-11-28 | 重庆红江机械有限责任公司 | A kind of low leakage super-pressure electric-controlled fuel injector |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057018A1 (en) * | 2019-09-26 | 2021-04-01 | 重庆红江机械有限责任公司 | Electronic control common-rail-type heavy oil injector |
| GB2596882A (en) * | 2019-09-26 | 2022-01-12 | Chongqing hongjiang machinery co ltd | Electronic control common-rail-type heavy oil injector |
| GB2596882B (en) * | 2019-09-26 | 2023-06-07 | Chongqing hongjiang machinery co ltd | Electronic control common-rail-type heavy oil injector |
| CN111255552A (en) * | 2020-03-18 | 2020-06-09 | 上海中船三井造船柴油机有限公司 | Oil sprayer of marine low-speed diesel engine |
| CN111255552B (en) * | 2020-03-18 | 2023-08-15 | 上海中船三井造船柴油机有限公司 | Fuel injector of marine low-speed diesel engine and fuel system formed by fuel injector |
| CN114076058A (en) * | 2021-12-15 | 2022-02-22 | 北油电控燃油喷射系统(天津)有限公司 | Large-flow oil injector with central solenoid valve |
| CN115234417A (en) * | 2022-07-29 | 2022-10-25 | 重庆红江机械有限责任公司 | Plane control valve |
| CN115234417B (en) * | 2022-07-29 | 2023-09-19 | 重庆红江机械有限责任公司 | Plane control valve |
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Application publication date: 20190503 |