CN104358645A - Electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device - Google Patents
Electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device Download PDFInfo
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- CN104358645A CN104358645A CN201410637384.8A CN201410637384A CN104358645A CN 104358645 A CN104358645 A CN 104358645A CN 201410637384 A CN201410637384 A CN 201410637384A CN 104358645 A CN104358645 A CN 104358645A
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- steel ball
- valve body
- oil sprayer
- gdi
- auxiliary heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 36
- 238000002347 injection Methods 0.000 title abstract description 18
- 239000007924 injection Substances 0.000 title abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000003921 oil Substances 0.000 claims description 56
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 29
- 238000013016 damping Methods 0.000 claims description 24
- 239000000295 fuel oil Substances 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000889 atomisation Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 17
- 239000000306 component Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010711 gasoline engine oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses an electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device. The electromagnetic assisted heating type GDI tar injection device comprises a valve body, a steel ball, a limiting ring and the like, wherein an groove with an upward opening is formed in the valve body; a bottom wall of the groove is an inclined plane which is gradually concaved from the circumferential outer edge to the circle center direction by a certain angle; at least one injection hole is formed in the inclined plane; the limiting ring is a column body and is fixed on the bottom wall of the groove of the valve body to form a central hole for storing the steel ball and at least one circulating hole which is distributed along the circumferential outer edge of the central hole; when the steel ball moves downwards and the steel ball is clamped into the central hole of the limiting ring, the outer surface of the steel ball is fitted with the inclined plane of the bottom wall of the groove of the valve body; the spraying holes are formed below the steel ball. The electromagnetic assisted heating type GDI tar injection device provided by the embodiment of the invention is simple in structure, simple in process and low in manufacturing cost; the atomization effect of fuel tar sprayed by the tar injection device is better, and the working performance and the service life of an engine can be effectively improved.
Description
Technical field
The present invention relates to petrol engine fuel injection system technical field, particularly relate to a kind of electromagnetism auxiliary heating GDI oil sprayer.
Background technique
At present, many offshore companies and research institution all develop gasoline direct machine (GDI) product and model machine in cylinder, data is had to show, GDI motor is compared with traditional intake port injection (PFI), mixed gas does not need through air throttle, therefore can reduce the vapour lock that air throttle produces mixed gas, fuel economy can improve about 15%, and Power output also increases about 10%.
GDI motor adopts in-cylinder direct injection technology, it is similar to the fueling technology of diesel engine, by a reciprocating pump for fuel common-rail pipe provides the gasoline pressure of about 100bar, fuel common-rail pipe is connected with the electromagnetism auxiliary heating GDI oil sprayer of each cylinder, under the fuel injection pulse signal sent at motor vehicle-mounted computer and the effect of power amplification circuit, fuel is directly sprayed into the firing chamber of motor with the form of spraying in the predetermined moment by electromagnetism auxiliary heating GDI oil sprayer, is mixed to form inflammable mixture with air in cylinder.Because in-cylinder direct injection technology more effectively can improve the fuel economy of motor, power character and emission performance relative to the gasoline intake manifold injection technology generally adopted at present, therefore become the main trend of vehicular petrol engine oil supply system future development.
As the core component of direct injection gasoline engine oil supply system, GDI oil sprayer has important impact to the burning of motor and emission performance.Working environment due to GDI oil sprayer is the rugged environment such as High Temperature High Pressure vibrations, the advantages such as precision is high, good stability that therefore require GDI oil sprayer to have.In prior art, GDI engine is when cold start-up, mixed gas quality is not high, make the burning of motor and emission performance bad, therefore a electromagnetism auxiliary heating GDI oil sprayer that can change fuel oil temperature is needed badly, thus according to the needs of motor under different operating mode, improve the spray pattern of fuel oil, improve burning quality and the emission performance of motor.
Summary of the invention
Embodiment of the present invention problem to be solved is to provide a kind of electromagnetism auxiliary heating GDI oil sprayer, its structure is simple, technique is terse, low cost of manufacture, the fuel atomization effect that oil sprayer can be made to spray is better, effectively improves service behaviour and the working life of motor.
In order to solve the problems of the technologies described above, embodiments provide a kind of electromagnetism auxiliary heating GDI oil sprayer, comprise valve body, steel ball, limited ring, seal ring, guide pipe, damping spring base, coil, coil brace, magnetic guiding loop, spring comes directly towards, iron core, oil inlet pipe, seal ring, valve rod, damping spring, buffer casting, armature, armature guide ring, yoke, return spring, profile plastics, tenminal block, seal ring limited ring, filter screen and heating terminal, wherein, described valve body is formed with the groove of an opening upwards, the diapire of described groove be from its circumferential outer edge to direction, the center of circle progressively to the inclined-plane that lower recess is angled, described inclined-plane is provided with at least one spray orifice,
Described limited ring is cylinder, and it is fixed on the diapire of described valve body recess, it is formed with one for holding the center hole of described steel ball and at least one opening along described center hole circumferential outer edge distribution;
When described steel ball moves downward and is held in the center hole of described limited ring, the outer surface of described steel ball and the inclined-plane of described valve body recess diapire fit, and described spray orifice is all positioned at the below of described steel ball.
Wherein, described diapire is progressively become the conical surface of 120 degree to lower recess to direction, the center of circle from its circumferential outer edge, and surface finishment≤0.2 μm of the described conical surface.
Wherein, described limited ring is coaxial with described valve body.
Wherein, described spray orifice is all in two-layer step shape, and it comprises upper strata step and lower floor's step, and the diameter of described upper strata step is less than the diameter of described lower floor step.
Wherein, described spray orifice is straight hole.
Wherein, described damping spring base is formed with the oilhole passed through for fuel oil, the mesopore passed through for described valve rod and for preventing the spring retainer hole of described damping spring play.
Wherein, described seal ring is made by tetrafluoroethylene material.
Wherein, described oil sprayer also comprises connecting sleeve, and described connecting sleeve is socketed on the described guide pipe two ends outer wall relative with described iron core, and is formed with described guide pipe and described iron core and be tightly connected.
Wherein, described connecting sleeve is made by non-magnetic stainless steel.
Wherein, when described coil electricity, described magnetic guiding loop, iron core and armature form closed magnetic circuit.
Implement the embodiment of the present invention, there is following beneficial effect:
1, structural design is simple, compact, processing technology is flexible, and magnetic element (comprising armature, iron core, guide pipe, yoke, magnetic guiding loop etc.) both can adopt machine cut to machine, and metal injection molding technology also can be adopted to complete, then can greatly improve its work efficiency, cost-saving;
2, due in stem movement process, being subject to larger hydraulic coupling and spring force, can rebounding when therefore steel ball and sealing conical surface of valve body impact, for preventing bounce-back from causing secondary injection, reducing stem movement to the impact forces of sealing conical surface of valve body by damping spring;
3, set up a connecting sleeve, preventing fuel oil from leaking thus the phenomenon causing oil sprayer normally to work generation from there is reserved gap location between iron core and armature, guaranteeing the sealability in fuel flow process;
4, adopt the integrated structure design of valve body and spray orifice, can amount of parts be reduced, reduce assembly error simultaneously;
5, closed yoke component structural design, effectively can reduce magnetic circuit reluctance, reduce leakage field, and promote electromagnetic force further in oil sprayer working procedure.
6, assembly technology is simple.The assembling of all component all completes at axial direction, easily realizes the Automated assembly of product, can ensure conformity and the stability of Product Assembly simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, the accompanying drawing obtaining other according to these accompanying drawings still belongs to category of the present invention.
The cross-sectional view of the electromagnetism auxiliary heating GDI oil sprayer that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is B point partial enlarged drawing in Fig. 1;
The electromagnetism auxiliary heating GDI fuel injector structure explosive view that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the cross-sectional view of valve component in Fig. 1;
Fig. 5 is the cross-sectional view of armature component in Fig. 1;
Fig. 6 is the cross-sectional view of core assembly in Fig. 1;
Fig. 7 is the cross-sectional view of Fig. 1 middle tube body assembly;
Fig. 8 is the cross-sectional view of Fig. 1 center line coil assembly;
Fig. 9 is a cross-sectional view of spray orifice in Fig. 2;
Figure 10 is another cross-sectional view of spray orifice in Fig. 2;
Figure 11 is a plan structure schematic diagram of damping spring base in Fig. 1;
Figure 12 is that the A-A of Figure 11 is to cross-sectional view;
Figure 13 is another plan structure schematic diagram of damping spring base in Fig. 1;
Figure 14 is that the A-A of Figure 12 is to cross-sectional view;
In figure, 1-valve body; 2-steel ball; 3-limited ring; 4-tetrafluoroethylene seal ring; 5-guide pipe; 6-damping spring base; 7-connecting sleeve; 8-coil; 9-coil brace; 10-magnetic guiding loop; 11-spring comes directly towards; 12-iron core; 13-oil inlet pipe; 14-seal ring; 15-valve rod; 16-damping spring; 17-buffer casting; 18-armature; 19-armature guide ring; 20-yoke; 21-return spring; 22-profile plastics; 23-tenminal block; 24-seal ring limited ring; 25-filter screen; 26-Electromagnetic Heating cover; 27-heats terminal.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The direction that the present invention mentions and position term, such as " on ", D score, "front", "rear", "left", "right", " interior ", " outward ", " top ", " bottom ", " side " etc., be only the direction with reference to accompanying drawing or position.Therefore, the direction of use and position term are in order to illustrate and to understand the present invention, but not limiting the scope of the invention.
As shown in Fig. 1 to Figure 14, in the embodiment of the present invention, propose a kind of electromagnetism auxiliary heating GDI oil sprayer, this oil sprayer comprises valve body 1, steel ball 2, limited ring 3, seal ring 4, guide pipe 5, damping spring base 6, coil 8, coil brace 9, magnetic guiding loop 10, spring top 11, iron core 12, oil inlet pipe 13, seal ring 14, valve rod 15, damping spring 16, buffer casting 17, armature 18, armature guide ring 19, yoke 20, return spring 21, profile plastics 22, tenminal block 23, seal ring limited ring 24, filter screen 25 and heating terminal 27;
Wherein, after valve body 1 adopts MIM technology or metal cutting mode to carry out roughing, valve body 1 is formed with the groove 11 of an opening upwards, the diapire 111 of groove 11 be from its circumferential outer edge to direction, the center of circle progressively to the inclined-plane that lower recess is angled, this inclined-plane is conducive to collecting more fuel oil, and high-precision grinding is carried out to the inclined-plane of valve body 1, ensure surface finishment≤0.2 μm on inclined-plane, thus the damage caused that rubs between minimizing iron and steel 2 and valve body 1, and the sealing of steel ball 2 when fitting with valve body 1 can be increased; Meanwhile, after utilizing igniting, spray orifice is drilled on inclined-plane and processes at least one spray orifice 112 by regulation requirement;
The mode of interference fit is adopted to be pressed in the groove 11 of valve body 1 limited ring 3 of cylinder, and be fixed on the diapire 111 of valve body 1 groove 11, ensure that limited ring 3 end face and valve body 1 diapire 111 are adjacent to towards the end face of valve rod 15, it is formed one for hold steel ball 2 center hole 31 and centrally hole 31 circumferential outer edge distribution at least one opening 32, fuel oil is made more to be entered the quantity on inclined-plane by opening 32, thus the fuel amount that steel ball 2 is atomized in valve rod 15 movement process is more abundant, the atomizing effect of generation is better;
When steel ball 2 moves downward and is held in the center hole 31 of limited ring 3, the outer surface of steel ball 2 and the inclined-plane of valve body 1 groove 11 diapire 111 fit, and spray orifice 112 is all positioned at the below of steel ball 2.
In sum, inner sealing inclined-plane and the steel ball 2 of valve body 1 form ball valve couple, ensure the sealing of oil sprayer, spray orifice 112 is arranged on the sealing inclined-plane of simultaneously valve body 1, when steel ball 2 moves towards valve body 1 groove 11, drive fuel oil to spray from spray orifice 112 and form spraying, until when the inclined-plane of the outer surface of steel ball 2 and valve body 1 groove 11 diapire 111 fits, enclose the circulation path that fuel oil enters spray orifice 112, thus improve the fuel atomization effect of oil sprayer injection.
Now, valve body 1 and limited ring 3 form valve component (as shown in Figure 4), this valve component and guide pipe 5 press-fit and to adopt laser-beam welding machine the two to be welded into as a whole, damping spring base 6 adopts the mode of interference fit to be pressed in guide pipe 5, the interior step face of the lower end surface of damping spring base 6 and guide pipe 5 is fitted tightly, and damping spring 16 is arranged on damping spring base 6; Valve rod 15, buffer casting 17, armature 18, armature guide ring 19, steel ball 2 are adjusted position, and carries out laser bonding composition armature component (as shown in Figure 5); Steel ball in armature component 2 and valve rod 15 are passed the center hole 31 of damping spring base 6 and limited ring 3, be encased in valve body 1 groove 11, ensure that steel ball 2 is fitted with the inclined-plane of valve body 1; Spring top 11 is pressed into the assigned position in iron core 12, and form core assembly (as shown in Figure 6), then return spring 21 loads in core assembly; The position of adjustment iron core 12, ensure the upper-end surface of armature 18 to iron core 12 lower end surface between the armature working clearance meet design requirement, and ensure that spring reaches the precompression of regulation; Oil inlet pipe 13 is pressed in iron core 12, ensures that the lower end surface of oil inlet pipe 13 contacts with core interior step surface, then adopts laser bonding oil inlet pipe 13 and iron core 12 to be fixed as one, forms body assembly (as shown in Figure 7); Filter screen 25 is pressed in oil inlet pipe 13, ensures filter screen 25 and oil inlet pipe 13 endoporus interference fit; Body assembly is encased in yoke 20 by designing requirement, and adopts laser bonding to fix; Coil 8 is around on coil brace 9, two of coil connector lugs are welded and fixed with the tenminal block of two on coil brace 9 respectively, form coil carrier assembly (as shown in Figure 8), coil carrier assembly is nested into the assigned position in yoke 20 along body assembly outer wall, magnetic guiding loop 10 is press fit in yoke 20, ensure magnetic guiding loop 10 external diameter and yoke 20 endoporus interference fit, magnetic guiding loop 10 endoporus excessively coordinates with body assembly cylindrical, and ensure yoke 10 end face and coil brace 9 end contact, form electromagnetism auxiliary heating GDI oil sprayer just assembly.
In order to further be conducive to collecting the fuel oil entered in groove 11, therefore the diapire 111 of valve body 1 groove 11 is designed to the conical surface progressively becoming 120 degree from its circumferential outer edge to direction, the center of circle to lower recess, the sealing conical surface coordinates with steel ball 2, after roughing, Internal Grinder with High Precision is adopted to carry out precision grinding to the sealing cone of valve body 1 again, to ensure its circularity and surface roughness, make surface finishment≤0.2 μm of the conical surface, thus the damage caused that rubs between minimizing iron and steel 2 and valve body 1, and the sealing of steel ball 2 when fitting with valve body 1 can be increased.
Can match with limited ring 3 and valve body 1 for the ease of steel ball 2, therefore need to control limited ring 3 coaxial with valve body 1, after making steel ball 2 spacing by the center hole 31 of limited ring 3 and valve body 1 groove 11 diapire 111 inclined-plane fits, and according to the difference of circulation condition, can adjust opening 32.
In order to ensure spray angle and spray effect, spray orifice 112 structure on valve body 1 and distribution are according to the requirement difference of design, different structures can be adopted flexibly, propose two kinds of project organizations in embodiments of the present invention: one, spray orifice 112 is all in two-layer step shape, it comprises upper strata step 1121 and lower floor's step 1122, and the diameter of upper strata step 1121 is less than the diameter (as shown in Figure 9) of lower floor's step 1122; Two, spray orifice 112 is straight hole (as shown in Figure 10).
For the ease of the assembling with parts such as damping spring 16, valve rods 15, buffer casting 6 is formed with the oilhole 61 passed through for fuel oil, the mesopore 62 passed through for valve rod 15 and for preventing the spring retainer hole 63 of damping spring 16 play, detail can see kind of the design proposal of two shown in Figure 11 to Figure 14.
In order to ensure sealing, seal ring 4 is made by resistant to elevated temperatures tetrafluoroethylene material, and after electromagnetism auxiliary heating GDI oil sprayer repeats dismounting through 5 times, attendant needs to change sealing ring 4 in time.
To leak thus the phenomenon causing oil sprayer normally to work occurs from there is reserved gap location between iron core 12 and armature 18 to prevent fuel oil, guarantee the sealability in fuel flow process, oil sprayer also comprises connecting sleeve 7, connecting sleeve 7 is socketed on the guide pipe 5 two ends outer wall relative with iron core 12, and formed with guide pipe 5 and iron core 12 and be tightly connected, this connecting sleeve 7 is made by non-magnetic stainless steel, thus when avoiding coil 8 to be energized, affect and form closed magnetic circuit by magnetic guiding loop 10, iron core 12 and armature 18.
The electromagnetism auxiliary heating GDI oil sprayer working principle of this embodiment of the present invention is: during engine operation, and engine electronic control unit requires to control the fuel injection quantity of electromagnetism auxiliary heating GDI oil sprayer according to the air-fuel ration control under Under Different Work Condition of Engine.
Fuel oil from fuel common-rail pipe by and filter screen 25 through oil inlet pipe 13 enters in oil inlet pipe 13, then the runner along iron core 12, spring top 11, return spring 21, armature guide ring 19 enters into the opening of armature 18, opening again through damping spring base 6 enters in the die cavity of guide pipe 5, eventually passes through limited ring 3 and enters in the die cavity of valve body.
When electromagnetism auxiliary heating GDI oil sprayer coil no electric circuit, armature component is by the effect of return spring 21 pretightening force, make steel ball 2 be in the sealing cone of valve body 1 state of fitting tightly, enclose the circulation path that fuel oil enters spray orifice, electromagnetism auxiliary heating GDI oil sprayer is in not oil spout state.
After the coil 8 of electromagnetism auxiliary heating GDI oil sprayer is energized, produce magnetic field, the magnetic line of force is via armature 18, guide pipe 5, yoke 20, magnetic guiding loop 10, iron core 12 equal magnetic circuit element forms closed-loop path, iron core 12 pairs of armature 18 produce electromagnetic attraction, when electromagnetic attraction is greater than making a concerted effort of the pretightening force of return spring 21 and kinetic friction force, oil pressure active force etc., armature component is picked up, steel ball 2 leaves the sealing cone of valve body 1, high pressure fuel is through the sealing cone of valve body 1, from spray orifice ejection, form fuel spray.After coil blackout, electromagnetic field fades away, when initial tension of spring is greater than the electromagnetic attraction of induction field generation, armature component is descending gradually, steel ball 2 and the sealing cone of valve body 1 complete the process of taking a seat after fitting, and electromagnetism auxiliary heating GDI oil sprayer course of injection stops.
Implement the embodiment of the present invention, there is following beneficial effect:
1, structural design is simple, compact, processing technology is flexible, and magnetic element (comprising armature, iron core, guide pipe, yoke, magnetic guiding loop etc.) both can adopt machine cut to machine, and metal injection molding technology also can be adopted to complete, then can greatly improve its work efficiency, cost-saving;
2, due in stem movement process, being subject to larger hydraulic coupling and spring force, can rebounding when therefore steel ball and sealing conical surface of valve body impact, for preventing bounce-back from causing secondary injection, reducing stem movement to the impact forces of sealing conical surface of valve body by damping spring;
3, set up a connecting sleeve, preventing fuel oil from leaking thus the phenomenon causing oil sprayer normally to work generation from there is reserved gap location between iron core and armature, guaranteeing the sealability in fuel flow process;
4, adopt the integrated structure design of valve body and spray orifice, can amount of parts be reduced, reduce assembly error simultaneously;
5, closed yoke component structural design, effectively can reduce magnetic circuit reluctance, reduce leakage field, and promote electromagnetic force further in oil sprayer working procedure.
6, assembly technology is simple.The assembling of all component all completes at axial direction, easily realizes the Automated assembly of product, can ensure conformity and the stability of Product Assembly simultaneously.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment oil sprayer is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electromagnetism auxiliary heating GDI oil sprayer, comprise valve body (1), steel ball (2), limited ring (3), seal ring (4), guide pipe (5), damping spring base (6), coil (8), coil brace (9), magnetic guiding loop (10), spring top (11), iron core (12), oil inlet pipe (13), seal ring (14), valve rod (15), damping spring (16), buffer casting (17), armature (18), armature guide ring (19), yoke (20), return spring (21), profile plastics (22), tenminal block (23), seal ring limited ring (24), filter screen (25) and heating terminal (27), it is characterized in that,
Described valve body (1) is formed with the groove (11) of an opening upwards, the diapire (111) of described groove (11) be from its circumferential outer edge to direction, the center of circle progressively to the inclined-plane that lower recess is angled, described inclined-plane is provided with at least one spray orifice (112);
Described limited ring (3) is cylinder, it is fixed on the diapire (111) of described valve body (1) groove (11), it is formed with one for holding the center hole (31) of described steel ball (2) and at least one opening (32) along the distribution of described center hole (31) circumferential outer edge;
When described steel ball (2) moves downward and is held in the center hole (31) of described limited ring (3), the outer surface of described steel ball (2) and the inclined-plane of described valve body (1) groove (11) diapire (111) fit, and described spray orifice (112) is all positioned at the below of described steel ball (2).
2. electromagnetism auxiliary heating GDI oil sprayer as claimed in claim 1, is characterized in that, described diapire (111) is progressively become the conical surface of 120 degree to lower recess to direction, the center of circle from its circumferential outer edge, and surface finishment≤0.2 μm of the described conical surface.
3. electromagnetism auxiliary heating GDI oil sprayer as claimed in claim 2, it is characterized in that, described limited ring (3) is coaxial with described valve body (1).
4. electromagnetism auxiliary heating GDI oil sprayer as claimed in claim 3, it is characterized in that, described spray orifice (112) is all in two-layer step shape, it comprises upper strata step (1121) and lower floor's step (1122), and the diameter on described upper strata step (1121) is less than the diameter of described lower floor step (1122).
5. electromagnetism auxiliary heating GDI oil sprayer as claimed in claim 3, it is characterized in that, described spray orifice (112) is straight hole.
6. electromagnetism auxiliary heating GDI oil sprayer as claimed in claim 1, it is characterized in that, described damping spring base (6) being formed with the oilhole (61) passed through for fuel oil, the mesopore (62) passed through for described valve rod (15) and for preventing the spring retainer hole (63) of described damping spring (16) play.
7. electromagnetism auxiliary heating GDI oil sprayer as claimed in claim 1, it is characterized in that, described seal ring (4) is made by tetrafluoroethylene material.
8. electromagnetism auxiliary heating GDI oil sprayer as described in claim 1, it is characterized in that, described oil sprayer also comprises connecting sleeve (7), described connecting sleeve (7) is socketed on described guide pipe (5) the two ends outer wall relative with described iron core (12), and is formed with described guide pipe (5) and described iron core (12) and be tightly connected.
9. electromagnetism auxiliary heating GDI oil sprayer as described in claim 8, it is characterized in that, described connecting sleeve (7) is made by non-magnetic stainless steel.
10. electromagnetism auxiliary heating GDI oil sprayer as described in claim 1, is characterized in that, when described coil (8) is energized, described magnetic guiding loop (10), iron core (12) and armature (18) form closed magnetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410637384.8A CN104358645A (en) | 2014-11-13 | 2014-11-13 | Electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410637384.8A CN104358645A (en) | 2014-11-13 | 2014-11-13 | Electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device |
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| Publication Number | Publication Date |
|---|---|
| CN104358645A true CN104358645A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410637384.8A Pending CN104358645A (en) | 2014-11-13 | 2014-11-13 | Electromagnetic assisted heating type GDI (Gasoline Direct Injector) tar injection device |
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| CN (1) | CN104358645A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464866A (en) * | 2016-01-14 | 2016-04-06 | 吉林大学 | Gasoline direct injection (GDI) oil sprayer for utilizing electromagnetic heating coil for heating |
| CN105927441A (en) * | 2016-05-03 | 2016-09-07 | 广西欧讯科技服务有限责任公司 | Pressure-resistant elastic oil injecting nozzle |
| CN107152362A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Novel structure fuel injector |
-
2014
- 2014-11-13 CN CN201410637384.8A patent/CN104358645A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464866A (en) * | 2016-01-14 | 2016-04-06 | 吉林大学 | Gasoline direct injection (GDI) oil sprayer for utilizing electromagnetic heating coil for heating |
| CN105927441A (en) * | 2016-05-03 | 2016-09-07 | 广西欧讯科技服务有限责任公司 | Pressure-resistant elastic oil injecting nozzle |
| CN107152362A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Novel structure fuel injector |
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Application publication date: 20150218 |