CN104632486B - For the control valve of fuel injector - Google Patents
For the control valve of fuel injector Download PDFInfo
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- CN104632486B CN104632486B CN201410729167.1A CN201410729167A CN104632486B CN 104632486 B CN104632486 B CN 104632486B CN 201410729167 A CN201410729167 A CN 201410729167A CN 104632486 B CN104632486 B CN 104632486B
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- control valve
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Abstract
The present invention relates to be used for the control valve of fuel injector, including control valve seat, armature component and damping spring, the control valve seat center is provided with valve seat orifice, the armature component includes armature and armature lever, armature lever lower end is placed in valve seat orifice and is axially movable, and armature lower surface is with control valve seat upper surface vis-a-vis and leaves damping clearance；The control valve seat upper surface is provided with convex valve seat platform, and the armature lower surface is provided with down convex armature platform, and the damping spring is enclosed within the valve seat platform and armature platform, damping spring upper end connection armature, damping spring lower end connection control valve seat；It is characterized in that：The armature upper surface is provided with thin groove, and armature lower surface is provided with the annular groove centered on armature lever.Present configuration is reasonable in design, can make armature quick and stable return, reduces the vibration during armature motion, improves electromagnetic actuation armature active force, and then improves the fuel oil of fuel injector and spray concordance, improves the performance of electromotor.
Description
Technical field
The present invention relates to a kind of control valve for fuel injector, belongs to internal combustion engine and is particularly high-pressure common-rail fuel system technology
Field.
Background technology
Control valve is the vitals on fuel injector, in order to improve the control accuracy of fuel injector opening process, armature
Return is quick and steady.In prior art, in order to increase the returning quickly of armature, typically take armature and control valve seat it
Between increase damping spring and reduce the solutions such as gap between armature and control valve seat.For example in Publication No.
A kind of control valve arrangement is disclosed in WO2010009925 (A1), its armature has larger fluid power with the moment of electromagnetic actuation
Resistance, is provided with damping spring between armature and control valve seat, rely on damping spring, have during armature return during armature return
Vibration, have impact on the fuel oil injection concordance of fuel injector device.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of control valve for fuel injector,
Its reasonable in design, which reduces the hydraulic resistance that armature was subject to electric magnet complete adhesive moment, opens rapid, improves electromagnetism
Ferrum adhesive armature active force, improves the stability and reliability of armature adhesive, while making armature quick and stable return, reduces armature
Vibration in motor process, improves the control accuracy of fuel injector injection process, improves the fuel oil injection concordance of fuel injector, enters
And improve the dynamic property of electromotor, economy, discharge performance and increase the service life.
According to the technical scheme that the present invention is provided：For the control valve of fuel injector, including control valve seat, armature component and resistance
Buddhist nun's spring, the control valve seat center are provided with valve seat orifice, and the armature component includes armature and armature lever, and armature lever lower end is placed in
Valve seat orifice is interior and is axially movable, and armature lower surface is with control valve seat upper surface vis-a-vis and leaves damping clearance；The control
Valve seat upper surface processed is provided with convex valve seat platform, and the armature lower surface is provided with down convex armature platform, and the damping spring is enclosed within
On the valve seat platform and armature platform, damping spring upper end connection armature, damping spring lower end connection control valve seat；Its feature exists
In：The armature upper surface is provided with thin groove, and armature lower surface is provided with the annular groove centered on armature lever.
As a further improvement on the present invention, the thin groove of the armature upper surface includes some circles with one heart but internal diameter is different
The thin groove of continuous circular shape and the thin groove of some radial directions, the described thin groove of some circle continuous circular shapes is carefully recessed with some radial directions
The intersecting connection of groove, radially thin groove is inner is connected with the thin groove of the continuous circular shape of innermost circle, and radially thin groove outer end extends to rank
Ferrum upper surface outer edge.
As a further improvement on the present invention, the thin groove of the armature upper surface includes some circles with one heart but internal diameter is different
The thin groove of discontinuous annular and the thin groove of some radial directions, a section often enclosed in the thin groove of discontinuous annular and the thin groove of radial direction
Intersecting connection, radially thin groove is inner is connected with the thin groove of the discontinuous annular of innermost circle, and radially thin groove outer end extends to armature
Upper surface outer edge.
As a further improvement on the present invention, the thin groove of the radial direction is to be through to armature lower surface by armature upper surface
Penetrating groove, or be not through blind slot.
As a further improvement on the present invention, the armature in the armature component and armature lever are split-type structural, armature
Center is provided with centre bore, and on armature lever, armature upper surface passes through limited block and the rank that armature lever is provided with to armature movable set
Iron connects, and damping gasket is provided between limited block and armature lever.
As a further improvement on the present invention, the inner circle of the annular groove of the armature lower surface is with diameter greater than equal to armature
The diameter of bar, less than or equal to the 3/4 of armature height, the outside diameter of annular groove is less than or equal to armature platform to the depth of annular groove
The 3/4 of diameter.
As a further improvement on the present invention, the cylindrical inside edge of the annular groove of the armature lower surface is provided with to annulus
The annular closing in portion that shape groove center is radially extended, leaves between the annular inside edge in closing in portion and the outer surface of armature lever
No less than the gap of 0.5mm.
As a further improvement on the present invention, the cross sectional shape in the annular closing in portion is triangle, rectangle or trapezoidal.
As a further improvement on the present invention, armature lower end outer circumference surface is provided with the convex annular for extending radially outwards
Go out portion.
As a further improvement on the present invention, the height of the annular protrusion less than or equal to armature height 1/4, described
Inner ring diameter of the annular protrusion outside diameter less than damping spring.
The present invention compared with prior art, has the advantage that：Present configuration is reasonable in design, greatly reduce armature with
The hydraulic resistance that electric magnet complete adhesive moment is subject to, realizes opening fast, improves electromagnetic actuation armature active force, so as to carry
The stability and reliability of high armature adhesive；Armature quick and stable return can also be made simultaneously, during reducing armature motion
Vibration；The control accuracy of fuel injector injection process is improved, the fuel oil injection concordance of fuel injector is improved, and then is improved electromotor
Dynamic property, economy, discharge performance and increase the service life.
Description of the drawings
Structural representations of the Fig. 1 for the embodiment of the present invention 1.
Structural representations of the Fig. 2 for the embodiment of the present invention 2.
Structural representations of the Fig. 3 for the embodiment of the present invention 3.
Structural representations of the Fig. 4 for the embodiment of the present invention 4.
Structural representations of the Fig. 5 for the embodiment of the present invention 5.
Fig. 6 is one of available armature structure schematic diagram of the invention.
Fig. 7 for available armature structure schematic diagram of the invention two.
Fig. 8 is one of available armature structure top view of the invention（The thin groove of continuous circular shape）.
Fig. 9 for available armature structure top view of the invention two（The thin groove of discontinuous annular）.
Description of reference numerals：1- control valve seats, 1a- valve seat platforms, 1b- valve seat orifices, 2- armature, 2a- armature platforms, 2b- are continuous
Annular thin groove, 2c- radially thin groove, the thin groove of 2d- discontinuous annulars, 3- damping springs, 4- armature levers, 4a- limited blocks, 5- resistances
Buddhist nun's pad, 6- damping clearances, 7- annular grooves, 8- annular closing ins portion, 9- annular protrusions, h- annular groove depth, d1- annulus
Circular diameter, d2- annular groove outside diameters, D- annular protrusion outside diameters, H- annular protrusions height in shape groove.
Specific embodiment
With reference to concrete drawings and Examples, the invention will be further described.
Embodiment 1
As shown in Fig. 1, Fig. 8, the control valve for fuel injector in embodiment 1 is mainly by control valve seat 1, armature 2, damping
Spring 3, armature lever 4 and damping gasket 5 etc. are constituted, and 1 center of the control valve seat is provided with valve seat orifice 1b, 4 lower end of the armature lever
It is placed in valve seat orifice 1b and is axially movable, 2 lower surface of armature is with 1 upper surface vis-a-vis of control valve seat and leaves damping clearance
6；1 upper surface of the control valve seat is provided with convex valve seat platform 1a, and 2 lower surface of the armature is provided with down convex armature platform 2a, institute
State damping spring 3 to be enclosed within the valve seat platform 1a and armature platform 2a, 3 upper end of damping spring connection armature 2,3 lower end of damping spring
Connection control valve seat 1；The armature 2 is split-type structural with armature lever 4, and 2 center of armature is provided with centre bore, 2 movable sleeve of armature
Be mounted on armature lever 4, the limited block 4a that 2 upper surface of armature is provided with by armature lever 4 is connected with armature lever 4, limited block 4a and
Damping gasket 5 is provided between armature lever 4；It is carefully recessed that 2 upper surface of the armature is provided with the continuous circular shape that four circles are concentric but internal diameter is different
The groove 2b and thin groove 2c of four uniform radial directions of circumference, the described thin groove 2b of four circle continuous circular shapes and the thin groove 2c of four radial directions
Intersecting connection, radially carefully the inner groove 2bs thin with the continuous circular shape of innermost circle of groove 2c is connected, and radially thin groove 2c outer ends extend
To 2 upper surface outer edge of armature；2 lower surface of the armature is provided with the annular groove 7 centered on armature lever 4.
In the present embodiment 1, a diameter of 7.6mm of the armature platform 2a, 2 height of armature is 4.8mm, 2 center-hole diameter of armature
For 3mm, the interior circular diameter d1 of the annular groove 7 and the equal diameters of 2 centre bore of armature, the outside diameter d2 of annular groove 7
For 5.7mm, depth h of annular groove 7 is 3.6mm.The described thin groove 2c of four radial directions is not through to 2 lower surface of armature
Blind slot（As shown in Figure 8）.
The specific work process and operation principle of embodiment 1 is as follows：
During work, when electric magnet produces electromagnetic force, armature 2 is moved upwards, the process that armature 2 is fitted with electric magnet
In, the fluid between armature 2 and electric magnet is constantly compressed, and the oil film fitted between moment armature 2 and electric magnet is stored up continuous
In annular thin groove 2b, and flow out along radially thin groove 2c, greatly weaken the hydraulic resistance of armature 2 and electromagnetic actuation,
When 2 electromagnetic force of armature disappears, armature lever 4 is subject to armature spring（Not shown in figure）Resilient force, armature lever 4 are transported downwards
It is dynamic, acted on armature 2 by damping gasket 5, armature 2 is also moved downward, and armature 2 overcomes damping bullet during moving downward
The active force of spring 3, while overcome the hydraulic damping active force between damping clearance 6, due to the annular groove on 2 lower surface of armature
Also fluid is contained in 7, during armature 2 is descending, the fluid in annular groove 7 is compressed, can be from damping clearance 6 to excessive
Go out, and damping clearance 6 has throttling action, the oil liquid pressure increase in annular groove 7 can be made, so as to the armature to moving downward
2 produce the resistance for suppressing which to move downward, and are conducive to making 2 returning quickly of armature.
Embodiment 2
As shown in Fig. 2, Fig. 9, the control valve for fuel injector in embodiment 2 is mainly by control valve seat 1, armature 2, damping
Spring 3, armature lever 4 and damping gasket 5 etc. are constituted, and 1 center of the control valve seat is provided with valve seat orifice 1b, 4 lower end of the armature lever
It is placed in valve seat orifice 1b and is axially movable, 2 lower surface of armature is with 1 upper surface vis-a-vis of control valve seat and leaves damping clearance
6；1 upper surface of the control valve seat is provided with convex valve seat platform 1a, and 2 lower surface of the armature is provided with down convex armature platform 2a, institute
State damping spring 3 to be enclosed within the valve seat platform 1a and armature platform 2a, 3 upper end of damping spring connection armature 2,3 lower end of damping spring
Connection control valve seat 1；The armature 2 is split-type structural with armature lever 4, and 2 center of armature is provided with centre bore, 2 movable sleeve of armature
Be mounted on armature lever 4, the limited block 4a that 2 upper surface of armature is provided with by armature lever 4 is connected with armature lever 4, limited block 4a and
Damping gasket 5 is provided between armature lever 4；It is carefully recessed that 2 upper surface of the armature is provided with the discontinuous annular that four circles are concentric but internal diameter is different
The groove 2b and thin groove 2c of four uniform radial directions of circumference, a section often enclosed in the thin groove 2d of discontinuous annular and the thin groove of radial direction
The intersecting connections of 2c, radially carefully the inner groove 2ds thin with the discontinuous annular of innermost circle of groove 2c is connected, and radially thin groove 2c outer ends are prolonged
Extend 2 upper surface outer edge of armature；2 lower surface of the armature is provided with the annular groove 7 centered on armature lever 4.
In the present embodiment 2, a diameter of 7.6mm of the armature platform 2a, 2 height of armature is 4.8mm, 2 center-hole diameter of armature
For 3mm, the interior circular diameter d1 of the annular groove 7 is 4mm, and the outside diameter d2 of annular groove 7 is 5.7mm, annular groove 7
Depth h is 1.2mm.Difference with embodiment 1 is：
The present embodiment 2 with the difference of embodiment 1 is：
1st, the interior circular diameter d1 of the annular groove 7 is 4mm, and depth h of annular groove 7 is 1.2mm.
2nd, the thin groove 2c of four radial directions is the penetrating groove that 2 lower surface of armature is through to by 2 upper surface of armature（Such as Fig. 9
It is shown）.
The specific work process and operation principle of embodiment 2 is as follows：
During work, when electric magnet produces electromagnetic force, armature 2 is moved upwards, the process that armature 2 is fitted with electric magnet
In, the fluid between armature 2 and electric magnet is constantly compressed, and the oil film fitted between moment armature 2 and electric magnet is stored up interrupted
In annular thin groove 2d, and flow out along radially thin groove 2c, greatly weaken the hydraulic resistance of armature 2 and electromagnetic actuation,
When 2 electromagnetic force of armature disappears, armature lever 4 is subject to armature spring（Not shown in figure）Resilient force, armature lever 4 are transported downwards
It is dynamic, acted on armature 2 by damping gasket 5, armature 2 is also moved downward, and armature 2 overcomes damping bullet during moving downward
The active force of spring 3, while overcome the hydraulic damping active force between damping clearance 6, due to the annular groove on 2 lower surface of armature
Also fluid is contained in 7, during armature 2 is descending, the fluid in annular groove 7 is compressed, can be from damping clearance 6 to excessive
Go out, and damping clearance 6 has throttling action, the oil liquid pressure increase in annular groove 7 can be made, so as to the armature to moving downward
2 produce the resistance for suppressing which to move downward, and are conducive to making 2 returning quickly of armature.
Embodiment 3
As shown in Fig. 3, Fig. 8, the control valve for fuel injector in embodiment 3 is mainly by control valve seat 1, armature 2, damping
Spring 3, armature lever 4 and damping gasket 5 etc. are constituted, and 1 center of the control valve seat is provided with valve seat orifice 1b, 4 lower end of the armature lever
It is placed in valve seat orifice 1b and is axially movable, 2 lower surface of armature is with 1 upper surface vis-a-vis of control valve seat and leaves damping clearance
6；1 upper surface of the control valve seat is provided with convex valve seat platform 1a, and 2 lower surface of the armature is provided with down convex armature platform 2a, institute
State damping spring 3 to be enclosed within the valve seat platform 1a and armature platform 2a, 3 upper end of damping spring connection armature 2,3 lower end of damping spring
Connection control valve seat 1；The armature 2 is split-type structural with armature lever 4, and 2 center of armature is provided with centre bore, 2 movable sleeve of armature
Be mounted on armature lever 4, the limited block 4a that 2 upper surface of armature is provided with by armature lever 4 is connected with armature lever 4, limited block 4a and
Damping gasket 5 is provided between armature lever 4；It is carefully recessed that 2 upper surface of the armature is provided with the continuous circular shape that four circles are concentric but internal diameter is different
The groove 2b and thin groove 2c of four uniform radial directions of circumference, the described thin groove 2b of four circle continuous circular shapes and the thin groove 2c of four radial directions
Intersecting connection, radially carefully the inner groove 2bs thin with the continuous circular shape of innermost circle of groove 2c is connected, and radially thin groove 2c outer ends extend
To 2 upper surface outer edge of armature；2 lower surface of the armature is provided with the annular groove 7 centered on armature lever 4.
In the present embodiment 3, a diameter of 7.6mm of the armature platform 2a, 2 height of armature is 4.8mm, 2 center-hole diameter of armature
For 3mm, the interior circular diameter d1 of the annular groove 7 and the equal diameters of 2 centre bore of armature, the outside diameter d2 of annular groove 7
For 5.7mm, depth h of annular groove 7 is 1.2mm.
In the present embodiment 3 with the difference of embodiment 1 it is：
1st, depth h of the annular groove 7 is 1.2mm.
2nd, the cylindrical inside edge of the annular groove 7 is provided with to annular groove 7 the annular closing in portion 8 for radially extending,
The gap no less than 0.5mm is left between the inside edge in the annular closing in portion 8 and the outer surface of armature lever 4.The present embodiment 3
In, the cross sectional shape in the annular closing in portion 8 is triangle, but in actual production manufacture, the section in the annular closing in portion 8
Shape can also be rectangle（Shown in Fig. 6）, or be trapezoidal（Shown in Fig. 7）.
The specific work process and operation principle of embodiment 3 is as follows：
During work, when electric magnet produces electromagnetic force, armature 2 is moved upwards, the process that armature 2 is fitted with electric magnet
In, the fluid between armature 2 and electric magnet is constantly compressed, and the oil film fitted between moment armature 2 and electric magnet is stored up continuous
In annular thin groove 2b, and flow out along radially thin groove 2c, greatly weaken the hydraulic resistance of armature 2 and electromagnetic actuation,
When 2 electromagnetic force of armature disappears, armature lever 4 is subject to armature spring（Not shown in figure）Resilient force, armature lever 4 are transported downwards
It is dynamic, acted on armature 2 by damping gasket 5, armature 2 is also moved downward, and armature 2 overcomes damping bullet during moving downward
The active force of spring 3, while overcome the hydraulic damping active force between damping clearance 6, due to the annular groove on 2 lower surface of armature
Also fluid is contained in 7, during armature 2 is descending, the fluid in annular groove 7 is compressed, can be successively via annular closing in portion 8
Outwards overflow with the gap between armature lever 4 and damping clearance 6, fluid flows through this at two during gap, with throttle effect, meeting
The oil liquid pressure increase in annular groove 7 is made, so as to the armature 2 to moving downward produces the resistance for suppressing which to move downward, is had
Beneficial to making 2 returning quickly of armature.
Armature 2 is an oscillatory process during return simultaneously, when armature 2 vibrates upwards, the oil in annular groove 7
Liquid produces resistance to annular closing in portion 8, so in armature 2 up and down oscillatory process, producing and suppressing the motion of armature 2
Resistance, so making 2 returning quickly of armature, reduces vibration, improves the performance of control valve.
Embodiment 4
As shown in Fig. 4, Fig. 8, the control valve for fuel injector in embodiment 4 is mainly damped by control valve seat 1, armature 2
Spring 3, armature lever 4 and damping gasket 5 etc. are constituted, and 1 center of the control valve seat is provided with valve seat orifice 1b, 4 lower end of the armature lever
It is placed in valve seat orifice 1b and is axially movable, 2 lower surface of armature is with 1 upper surface vis-a-vis of control valve seat and leaves damping clearance
6；1 upper surface of the control valve seat is provided with convex valve seat platform 1a, and 2 lower surface of the armature is provided with down convex armature platform 2a, institute
State damping spring 3 to be enclosed within the valve seat platform 1a and armature platform 2a, 3 upper end of damping spring connection armature 2,3 lower end of damping spring
Connection control valve seat 1；The armature 2 is split-type structural with armature lever 4, and 2 center of armature is provided with centre bore, 2 movable sleeve of armature
Be mounted on armature lever 4, the limited block 4a that 2 upper surface of armature is provided with by armature lever 4 is connected with armature lever 4, limited block 4a and
Damping gasket 5 is provided between armature lever 4；It is carefully recessed that 2 upper surface of the armature is provided with the continuous circular shape that four circles are concentric but internal diameter is different
The groove 2b and thin groove 2c of four uniform radial directions of circumference, the described thin groove 2b of four circle continuous circular shapes and the thin groove 2c of four radial directions
Intersecting connection, radially carefully the inner groove 2bs thin with the continuous circular shape of innermost circle of groove 2c is connected, and radially thin groove 2c outer ends extend
To 2 upper surface outer edge of armature；2 lower surface of the armature is provided with the annular groove 7 centered on armature lever 4.
In the present embodiment 4, a diameter of 7.6mm of the armature platform 2a, 2 height of armature is 4.8mm, 2 center-hole diameter of armature
For 3mm, the inner ring diameter of damping spring 3 is 11mm, the interior circular diameter d1 of the annular groove 7 and the diameter of 2 centre bore of armature
Equal, the outside diameter d2 of annular groove 7 is 5.7mm, and depth h of annular groove 7 is 1.2mm.
The present embodiment 4 with the difference of embodiment 1 is：
1st, the inner ring diameter of the damping spring 3 is 11mm, and depth h of the annular groove 7 is 1.2mm.
2nd, 2 lower end outer circumference surface of the armature is provided with the annular protrusion 9 for extending radially outwards, the annular protrusion
9 height H is 1.2mm, and 9 outside diameter D of annular protrusion is 10.5mm, less than the inner ring diameter of damping spring 3.
The specific work process and operation principle of embodiment 4 is as follows：
During work, when electric magnet produces electromagnetic force, armature 2 is moved upwards, the process that armature 2 is fitted with electric magnet
In, the fluid between armature 2 and electric magnet is constantly compressed, and the oil film fitted between moment armature 2 and electric magnet is stored up continuous
In annular thin groove 2b, and flow out along radially thin groove 2c, greatly weaken the hydraulic resistance of armature 2 and electromagnetic actuation,
When 2 electromagnetic force of armature disappears, armature lever 4 is subject to armature spring（Not shown in figure）Resilient force, armature lever 4 are transported downwards
It is dynamic, acted on armature 2 by damping gasket 5, armature 2 is also moved downward, and armature 2 overcomes damping bullet during moving downward
The active force of spring 3, while overcome the hydraulic damping active force between damping clearance 6, due to the annular groove on 2 lower surface of armature
Also fluid is contained in 7, during armature 2 is descending, the fluid in annular groove 7 is compressed, can be from damping clearance 6 to excessive
Go out, and damping clearance 6 has throttling action, the oil liquid pressure increase in annular groove 7 can be made, so as to the armature to moving downward
2 produce the resistance for suppressing which to move downward, and are conducive to making 2 returning quickly of armature.
Armature 2 is an oscillatory process during return simultaneously, when armature 2 vibrates upwards, 9 upper end of annular protrusion
Face is subject to the resistance of fluid, increase armature 2 it is up during resistance, so in armature 2 up and down oscillatory process,
The resistance for suppressing the motion of armature 2 is produced, so making 2 returning quickly of armature, vibration is reduced, is improve the performance of control valve.
Embodiment 5
As shown in Figure 5, Figure 8, the control valve for fuel injector in embodiment 5 is mainly damped by control valve seat 1, armature 2
Spring 3, armature lever 4 and damping gasket 5 etc. are constituted, and 1 center of the control valve seat is provided with valve seat orifice 1b, 4 lower end of the armature lever
It is placed in valve seat orifice 1b and is axially movable, 2 lower surface of armature is with 1 upper surface vis-a-vis of control valve seat and leaves damping clearance
6；1 upper surface of the control valve seat is provided with convex valve seat platform 1a, and 2 lower surface of the armature is provided with down convex armature platform 2a, institute
State damping spring 3 to be enclosed within the valve seat platform 1a and armature platform 2a, 3 upper end of damping spring connection armature 2,3 lower end of damping spring
Connection control valve seat 1；The armature 2 is split-type structural with armature lever 4, and 2 center of armature is provided with centre bore, 2 movable sleeve of armature
Be mounted on armature lever 4, the limited block 4a that 2 upper surface of armature is provided with by armature lever 4 is connected with armature lever 4, limited block 4a and
Damping gasket 5 is provided between armature lever 4；It is carefully recessed that 2 upper surface of the armature is provided with the continuous circular shape that four circles are concentric but internal diameter is different
The groove 2b and thin groove 2c of four uniform radial directions of circumference, the described thin groove 2b of four circle continuous circular shapes and the thin groove 2c of four radial directions
Intersecting connection, radially carefully the inner groove 2bs thin with the continuous circular shape of innermost circle of groove 2c is connected, and radially thin groove 2c outer ends extend
To 2 upper surface outer edge of armature；2 lower surface of the armature is provided with the annular groove 7 centered on armature lever 4.
In the present embodiment 5, a diameter of 7.6mm of the armature platform 2a, 2 height of armature is 4.8mm, 2 center-hole diameter of armature
For 3mm, the inner ring diameter of damping spring 3 is 11mm, the interior circular diameter d1 of the annular groove 7 and the diameter of 2 centre bore of armature
Equal, the outside diameter d2 of annular groove 7 is 5.7mm, and depth h of annular groove 7 is 1.2mm.
The present embodiment 5 with the difference of embodiment 1 is：
1st, the inner ring diameter of the damping spring 3 is 11mm, and depth h of the annular groove 7 is 1.2mm.
2nd, the cylindrical inside edge of the annular groove 7 is provided with to annular groove 7 the annular closing in portion 8 for radially extending,
The gap no less than 0.5mm, the annular are left between the inside edge in the annular closing in portion 8 and the outer surface of armature lever 4
The cross sectional shape in closing in portion 8 is triangle.
3rd, 2 lower end outer circumference surface of the armature is provided with the annular protrusion 9 for extending radially outwards, the annular protrusion
9 height H is 1.2mm, and 9 outside diameter D of annular protrusion is 10.5mm, less than the inner ring diameter of damping spring 3.
The structure of embodiment 5 is the combination of embodiment 3 and embodiment 4, so its specific work process and operation principle
It is similar to embodiment 3 and embodiment 4, it is the combination of 4 course of work of embodiment 3 and embodiment, therefore here is omitted.
Claims (9)
1. the control valve of fuel injector, including control valve seat are used for（1）, armature component and damping spring（3）, the control valve seat
（1）Center is provided with valve seat orifice（1b）, the armature component includes armature（2）And armature lever（4）, armature lever（4）Lower end is placed in valve
Bore（1b）It is interior and be axially movable, armature（2）Lower surface and control valve seat（1）Upper surface vis-a-vis and leave damping clearance
（6）；The control valve seat（1）Upper surface is provided with convex valve seat platform（1a）, the armature（2）Lower surface is provided with down convex armature
Platform（2a）, the damping spring（3）It is enclosed within the valve seat platform（1a）With armature platform（2a）On, damping spring（3）Upper end connection rank
Ferrum（2）, damping spring（3）Lower end connects control valve seat（1）；It is characterized in that：The armature（2）Upper surface is provided with thin groove,
Armature（2）Lower surface is provided with armature lever（4）Centered on annular groove（7）；
The armature（2）Lower end outer circumference surface is provided with the annular protrusion for extending radially outwards（9）.
2. the control valve of fuel injector is used for as claimed in claim 1, it is characterised in that：The armature（2）Upper surface it is thin recessed
Groove includes some circles with one heart but the thin groove of the different continuous circular shape of internal diameter（2b）With the thin groove of some radial directions（2c）If, it is described
It is dry to enclose the thin groove of continuous circular shape（2b）With the thin groove of some radial directions（2c）Intersecting connection, the thin groove of radial direction（2c）It is inner with it is most interior
The thin groove of continuous circular shape of circle（2b）Connection, the thin groove of radial direction（2c）Outer end extends to armature（2）Upper surface outer edge.
3. the control valve of fuel injector is used for as claimed in claim 1, it is characterised in that：The armature（2）Upper surface it is thin recessed
Groove includes some circles with one heart but the thin groove of the different discontinuous annular of internal diameter（2d）With the thin groove of some radial directions（2c）, often enclose interrupted
Annular thin groove（2d）In one section with the thin groove of radial direction（2c）Intersecting connection, the thin groove of radial direction（2c）Inner and innermost circle
The thin groove of discontinuous annular（2d）Connection, the thin groove of radial direction（2c）Outer end extends to armature（2）Upper surface outer edge.
4. the control valve of fuel injector is used for as claimed in claim 2 or claim 3, it is characterised in that：The thin groove of the radial direction（2c）For
By armature（2）Upper surface is through to armature（2）The penetrating groove of lower surface, or be not through blind slot.
5. the control valve of fuel injector is used for as claimed in claim 1, it is characterised in that：Armature in the armature component（2）
With armature lever（4）For split-type structural, armature（2）Center is provided with centre bore, armature（2）Movable set is in armature lever（4）On, rank
Ferrum（2）Upper surface passes through armature lever（4）The limited block being provided with（4a）With armature lever（4）Connection, limited block（4a）With armature lever
（4）Between be provided with damping gasket（5）.
6. the control valve of fuel injector is used for as claimed in claim 1, it is characterised in that：The armature（2）The annulus of lower surface
Shape groove（7）Interior circular diameter（d1）More than or equal to armature lever（4）Diameter, annular groove（7）Depth（h）Less than or equal to armature
（2）The 3/4 of height, annular groove（7）Outside diameter（d2）Less than or equal to armature platform（2a）The 3/4 of diameter.
7. the control valve of fuel injector is used for as claimed in claim 1, it is characterised in that：The armature（2）The annulus of lower surface
Shape groove（7）Cylindrical inside edge is provided with to annular groove（7）The annular closing in portion for radially extending（8）, the annular closing in
Portion（8）Inside edge and armature lever（4）Outer surface between leave gap no less than 0.5mm.
8. the control valve of fuel injector is used for as claimed in claim 7, it is characterised in that：The annular closing in portion（8）Section
It is shaped as triangle, rectangle or trapezoidal.
9. the control valve of fuel injector is used for as claimed in claim 1, it is characterised in that：The annular protrusion（9）Height
（H）Less than or equal to armature（2）The 1/4 of height, the annular protrusion（9）Outside diameter（D）Less than damping spring（3）Inner ring
Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410729167.1A CN104632486B (en) | 2014-12-03 | 2014-12-03 | For the control valve of fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410729167.1A CN104632486B (en) | 2014-12-03 | 2014-12-03 | For the control valve of fuel injector |
Publications (2)
| Publication Number | Publication Date |
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| CN104632486A CN104632486A (en) | 2015-05-20 |
| CN104632486B true CN104632486B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410729167.1A Active CN104632486B (en) | 2014-12-03 | 2014-12-03 | For the control valve of fuel injector |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257445B (en) * | 2015-10-14 | 2018-08-24 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | A kind of injector |
| CN105673287A (en) * | 2016-04-07 | 2016-06-15 | 宁波舜田良源油嘴油泵有限公司 | High-voltage common-rail electrically-controlled oil sprayer |
| IT201600114608A1 (en) * | 2016-11-14 | 2018-05-14 | Magneti Marelli Spa | FUEL SUPPLY PUMP |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10018304A1 (en) * | 2000-04-13 | 2001-10-25 | Bosch Gmbh Robert | Armature plate of a switching magnet, in particular for diesel fuel injectors, and method for producing such an armature plate |
| CN100389258C (en) * | 2004-06-02 | 2008-05-21 | 株式会社电装 | Fuel injection valve |
| CN101539084B (en) * | 2009-03-20 | 2010-12-29 | 天津大学 | Common rail electronic control jet apparatus |
| IT1394019B1 (en) * | 2009-05-06 | 2012-05-25 | Magneti Marelli Spa | ELECTROMAGNETIC FUEL INJECTOR WITH HYDRAULIC DAMPING |
| JP2012112265A (en) * | 2010-11-22 | 2012-06-14 | Toyota Motor Corp | Fuel injection valve |
| CN103437928B (en) * | 2013-09-06 | 2016-05-04 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electromagnetic valve type fuel injector control valve assembly |
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