CN103032222A - Electrically controlled fuel direct injection device - Google Patents
Electrically controlled fuel direct injection device Download PDFInfo
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- CN103032222A CN103032222A CN2012105239823A CN201210523982A CN103032222A CN 103032222 A CN103032222 A CN 103032222A CN 2012105239823 A CN2012105239823 A CN 2012105239823A CN 201210523982 A CN201210523982 A CN 201210523982A CN 103032222 A CN103032222 A CN 103032222A
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- armature
- iron core
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- fuel oil
- filter
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Abstract
The invention discloses an electrically controlled fuel direct injection device, and aims to provide a fuel injector. According to the fuel injector, a ball head of a valve stem quickly falls on a seat without chatter, a valve component runs stably, and a filter element of a filter is difficultly jammed. According to the technical scheme, annularly-arrayed axially uniformly distributed holes (12) uniformly distributed around a central axis and a thorn-shaped elastic piece (9) clinging to and fixedly connected with the lower end face of an armature (10) are arranged on the lower end part of the armature (10) axially adjacent to a core (2); the thorn-shaped elastic piece (9) is fixedly connected with ear flakes (13) which are stretched and deformed when moving upwards along with a valve stem component and cannot be deformed and stretched when moving downwards; and the ear flakes (13) are provided with flow choking holes (15) for retarding the flow of a fuel. Impurities are collected by a tubular filter screen with a large filter area and a trap type groove of a filter support step, so that the impurities or foreign matters can be effectively filtered from liquid, and the critical shortcoming that the fuel injector is easily jammed by the impurities is overcome from the source.
Description
Technical field
The present invention relates to a kind of fuel engine fuel injection system, the fuel oil that is applicable to carry out on the direct spray petrol engine in cylinder (GDI) the fuel oil supply directly sprays electric-controlled fuel injector or device.
Background technique
At present, external many companies and mechanism have all developed direct spray petrol engine in cylinder (GDI) model machine and product, and related data shows, the vehicle of equipped direct spray petrol engine in cylinder not only can fuel-economizing more than 10%, and reduce widely toxic emission, improve vehicle power output more than 10%.Directly jetting gasoline engine is necessarily used in Europe, Japan and the U.S., and in rapid popularization.
Directly jetting gasoline engine and fueling injection equipment thereof still are in the starting stage in development and the popularization of China.Without fueling injection equipment independent development product and exemplar, there is following shortcoming in the fueling injection equipment of existing similar techniques at present:
1) complex structure is equipped with the more parts such as two kinds of springs of size, two kinds of spring seats and needle-valve block, needle-valve connecting sleeve, valve rod connecting rod therein simultaneously, considers between the part that forming one simplifies;
2) dynamic responding speed is slow, and valve assembly is comprised of parts such as armature, two kinds of springs of size, two kinds of spring seats and needle-valve block, needle-valve connecting sleeve, valve rod connecting rods, and the movement parts quality is large, affects dynamic responding speed;
3) the large footpath of spring contacts with mounting hole hole wall fitting surface total length, and during valve assembly high speed back and forth movement, the easy grazing hole wall of spring causes the valve assembly motion unstable, affects identity of injection;
4) the filter element free from admixture is collected groove, is easily stopped up by impurity.
5) valve rod assembly is under the effect of high pressure fuel, and the valve rod bulb is taken a seat fast and produced vibration.
The filter of prior art filter liquide normally arranges the filter screen of an impurity screening by the flow direction of fluid.Impurity after this filter filters often is deposited in the filter screen, and filter screen is stopped up, and stops the proper flow of fluid, when serious, will stop up whole flow channel fully, causes the fault that flows.
Summary of the invention
The objective of the invention is for above-mentioned the deficiencies in the prior art part, provide a kind of valve rod bulb to take a seat fast and do not tremble, valve assembly motion stabilization, filter filter core are difficult for stopping up fuel oil and directly spray electric oil spraying unit.
Above-mentioned purpose of the present invention can reach by following measures, a kind of fuel oil directly sprays electric oil spraying unit, comprise, coaxial being assemblied in electromagnet assembly 11 housings, the iron core 2 that is provided with filtration channel and the valve rod assembly that is connected front case 5 cavity volumes and axially connects iron core 2, and by link to each other with the armature 10 passages axle spring 4 of bulb valve rod 8 of iron core 2, it is characterized in that, be shaped with around the axial uniform hole 12 of the uniform annular array of central axis and the sour jujube shape shell fragment 9 of being close to armature 10 lower end surfaces with iron core 2 axial adjacent armature 10 underparts, sour jujube shape shell fragment 9 is fixedly connected with the up extensional deformation of valve rod assembly and opens, the descending non-deformable auricle that opens 13, auricle 13 is shaped with the restricted orifice 15 of damping fuel flow rate.
The present invention is provided with the turriform filter that extends towards the fluid countercurrent current direction at iron core 2 fuel inlet passage cavitys.
The present invention compared with prior art has following beneficial effect.
The present invention arranges when up at the valve rod assembly as fuel injector magnetic system motion assembly, the auricle of stretching, extension is opened in deformable, allow fuel oil pass through the axial bore of the equal section in armature 10 lower ends, the space of opening by deformable auricle on the sour jujube shape shell fragment 9 again enters in front case 5 cavity volumes fast; When valve rod assembly was descending, the auricle that stretches on the sour jujube shape shell fragment 9 was close to armature 10 lower end surfaces, and non-deformable opening is because the axial bore choked flow can prevent the vibration that the valve rod bulb is taken a seat.
The present invention adopts towards the countercurrent direction of fluid passage and extends the turriform trap filter that is installed in the fluid passage, allow fluid enter filtration channel from tubular filter screen head and cylinder circumference circulation slit, utilize flow of fluid inertial force, make impurity in the liquid and foreign matter from and fall to the seat ring bottom and sink in the annular groove trap.Tubular filter screen and filter support level that logical filter area is large are collected impurity with the trap type groove, can not only effectively filter impurity or foreign matter in the liquid, and the critical defect of having avoided oil sprayer easily to be stopped up by impurity from the source.
The present invention can be used for the high pressure fuel inner cylinder direct injection in direct injection technology field in liquid fuel, the especially Engine.
Description of drawings
Fig. 1 is the organigram that fuel oil of the present invention directly sprays electric oil spraying unit.
Fig. 2 is the schematic exploded perspective view of armature 10 parts among Fig. 1.
Fig. 3 is Fig. 2 armature 10 up working principle schematic representation.
Fig. 4 is Fig. 2 armature 10 downlink working principle schematic.
Fig. 5 is the worm's eye view of Fig. 2.
Fig. 6 is the schematic representation of trap filter among Fig. 1.
Among the figure: 1 turriform trap filter, 2 iron cores, 3 magnetism resistent rings, 4 axle springs, 5 front cases, 6 collets, 7 valve seats, 8 bulb valve rods, 9 sour jujube shape shell fragments, 10 armature, 11 electromagnet assemblies, 12 axial uniform holes, 13 auricles, 14 oil spout axial bores, 15 restricted orifice, 16 tubular filter screens, 17 sagging annular grooves, 18 skeletons, 19 trap seat rings, 20 fuel galleries, 21 annular groovings.
Embodiment
Consult Fig. 1.Fuel oil directly sprays electric oil spraying unit, comprise, the in-line valve spring 4 that install fuel gallery 20 between coaxial armature 10, iron core 2 and the armature 10 that is assemblied in filter 1 in electromagnet assembly 11 cylindrical shells, iron core 2, front case 5, axial adjacent iron core 2 connects firmly the bulb valve rod 8 on armature 10 and is fixed on the valve seat 7 of front case 5 lower end inner chambers.
Under nature, leave a fixed gap (air gap) between iron core 2 lower end surfaces and armature 10 upper-end surfaces.For keeping the fuel oil in front case 5 cavity volumes not flow out, be positioned at the conical surface and oil spout axial bore 14 that front case 5 tail ends are fixedly connected with valve seat 7 and valve rod 8 bulbs formation sealing surface.Iron core 2 is axially adjacent with armature 10, and the upper and lower end face joins, and is shaped with the axial bore of assembling axle spring 4 between abutted surface.The bulb valve rod 8 that is set with axle spring 4 can be located in interior valve seat 7 axle springs 4 by iron core 2 and armature 10 and be positioned at the fuel gallery that iron core 2 and armature 10 link to each other up and down
20In, and the upper and lower end face is directly supported by the end surface of step hole on iron core 2 and the armature 10.After 4 assemblings of in-line valve spring certain pre compressed magnitude is arranged, by armature 10 power is passed to bulb valve rod 8 bulb positions.Electromagnet assembly 11 upper-lower positions are closely linked together iron core 2 and front case 5 large end peripheries by electromagnet assembly 11 by iron core 2 step surfaces location.Tail end is fixedly connected with the front case 5 of valve seat 7, and by the magnetism resistent ring 3 that large end opening links to each other, the iron core 2 that links to each other connects firmly formation only has the front integral sealing container of opening in the upper end.
At front case 7 small end external diameter cylndrical surface annular grooves heat insulation ring 6 is installed, to reduce motor to the too much heat of fueling injection equipment transmission.On the external diameter circumference of the coil winding of iron core 2, be fixedly connected with non-magnet material magnetism resistent ring 3.Magnetism resistent ring 3 divides magnetic flux more between iron core 2 and the armature 10, has strengthened the suction-combining force.Adjust the magnetism resistent ring thickness size, can regulate void dimension between iron core 2 lower end surfaces and armature 10 upper-end surfaces, play the pad effect of adjusting.
Consult Fig. 2～Fig. 5.Armature 10 is communicated with 20 lower ends, fuel gallery and is shaped with annular grooving 21, and in-line valve spring 4 is located on the Step Shaft of annular grooving 21 belows, and this Step Shaft is shaped with around the axial uniform hole 12 of the uniform annular array of center hole, and axial uniform hole 12 is communicated with annular grooving 21.Be close to armature 10 lower end surfaces and be provided with sour jujube shape shell fragment 9, sour jujube shape shell fragment 9 is fixedly connected with the up extensional deformation of valve rod assembly and opens, the descending non-deformable auricle that opens 13, auricle 13 is shaped with the restricted orifice 15 of damping fuel flow rate, and the auricle 13 of each restricted orifice 15 to there being one to have the elasticity opening and closing.The coaxial armature 10 that is assemblied in the large end opening of front case 5 cavity volume cylindrical shells connects firmly into a whole valve rod assembly with bulb valve rod 8, sour jujube shape shell fragment 9, as fuel injector magnetic system motion assembly.Axially adjacent armature 10 underparts be shaped with axial uniform hole 12 around central axis with iron core 2, this uniform axial bore by the sour jujube shape shell fragment 9 of being close to armature 10 lower end surfaces be periphery restricted orifice 15 with its below front case 5 cavity volumes communicate, be shaped with the up extensional deformation of valve rod assembly on the sour jujube shape shell fragment 9 and open, the descending auricle 13 that is close to armature 10 lower end surfaces.
The fueling injection equipment that is formed by above-mentioned parts by joint with after oily rail, oil pump are connected, fuel oil enters the long-pending larger turriform shape filter 1 elimination impurity of filtering surface by iron core 2 upper end open, by iron core 2 intermediate hole passages, flow into armature 10 center-aisle holes, disperse to enter the axial uniform hole 12 of the equal section in armature 10 lower ends, enter in front case 5 cavity volumes by auricle 13 restricted orifice 15 on the sour jujube shape shell fragment 9, the band pressure fuel oil in front case 5 cavity volumes sprays in the engine cylinder by valve seat 7 oil spout axial bores 14 again.Be full of fuel oil in the whole oil sprayer inner volume.
After the magnet spool energising, armature 10 is driven by electromagnetic attraction and upwards lifts by the direction of F arrow shown in Figure 3, the bulb that drives bulb valve rod 87 sealing cones of lifting off a seat, rush at sour jujube shape shell fragment 9 with the axial uniform hole 12 of pressure fuel oil by armature 11 in front case 5 cavity volumes, only have this moment seldom fuel oil break-through to cross the restricted orifice 15 of the auricle 13 on the sour jujube shape shell fragment 9, the outer rim of the auricle 13 of most of fuel oil from the sour jujube shape shell fragment 9 flows to the below, sprays in the engine cylinder by valve seat 7 oil spout axial bores 14 again.Filled arrows represents the liquid flow path direction among the figure.
After the magnet spool energising, electromagnetic attraction disappears, the spring force band moving armature 10 of in-line valve spring 4 and bulb valve rod 8 move downward by the direction of F arrow shown in Figure 4, so this moment, Fig. 5 sour jujube shape shell fragment 9 was because have elastic force to resile to be close to the lower surface of armature 10, the volume of front case 5 cavity volumes reduces, fuel oil can only be by the restricted orifice 15 of the auricle 13 on the sour jujube shape shell fragment 9, armature 10 center-aisle orifice flows return the intermediate hole passage of iron core 2 and armature 10 formation, filled arrows represents the liquid flow path direction among the figure, because be shaped with the restricted orifice 15 of the very little effect of playing damping on the upper auricle 13 of sour jujube shape shell fragment 9, make bulb valve rod 8 move downward to such an extent that speed slows down, thereby reduce the impact of taking a seat of 8 pairs of valve seats 7 of bulb valve rod.Until bulb valve rod 8 move downward to the bulb of bulb valve rod 8 with till valve seat 7 conical surfaces contact, return to the oil sprayer initial closed state.
Consult Fig. 6.Be provided with the turriform trap filter 1 that extends towards the fluid countercurrent current direction at iron core 2 fuel inlet passage cavitys, this turriform trap filter 1 has a tubular filter screen 16 that is injection-moulded on the skeleton 18, tubular filter screen 16 is axially towards the fluid passage, be located in the central authorities of the trap seat ring 19 that is shaped with the annular groove 17 that sink, trap seat ring 19 is enclosed within on the periphery of skeleton 18 lower ends.Bottom support step cylindrical and iron core 2 circular holes form fitting surface, and support level is with collecting the impurity groove.
This turriform trap filter 1 is located in the bottom of armature 2 coupling sleeve (not shown)s, be communicated with the oil circuit outlet, fuel liquid enters from the oil circuit entrance, flow downward through filter tubular filter screen 16 cylinder filter screen spaces, under the effect of fuel liquid pressure, fuel liquid is from filter tubular filter screen 16 heads, and shunting inflow filter central space filtration channel comes together in the oil circuit outlet and flows out.
Claims (8)
1. a fuel oil directly sprays electric oil spraying unit, comprise, coaxial being assemblied in electromagnet assembly (11) housing, the iron core (2) that is provided with filtration channel and the valve rod assembly that is connected front case (5) cavity volume and axially connects iron core (2), and by link to each other with armature (10) the passage axle spring (4) of bulb valve rod (8) of iron core (2), it is characterized in that, axially adjacent armature (10) underpart be shaped with around the axial uniform hole of the uniform annular array of central axis (12) and be close to the sour jujube shape shell fragment (9) of armature (10) lower end surface with iron core (2), sour jujube shape shell fragment (9) is fixedly connected with the up extensional deformation of valve rod assembly and opens, the descending non-deformable auricle that opens (13), auricle (13) are shaped with the restricted orifice (15) of damping fuel flow rate.
2. fuel oil as claimed in claim 1 directly sprays electric oil spraying unit, it is characterized in that, is fixedly connected with non-magnet material magnetism resistent ring (3) on the external diameter circumference of the coil winding of iron core (2).
3. fuel oil as claimed in claim 2 directly sprays electric oil spraying unit, it is characterized in that, the tail end position is fixedly connected with the front case (5) of valve seat (7), and by the magnetism resistent ring (3) that large end opening links to each other, the iron core (2) that links to each other connects firmly formation only has the front integral sealing container of opening in the upper end.
4. fuel oil as claimed in claim 1 directly sprays electric oil spraying unit, it is characterized in that, the coaxial armature (10) that is assemblied in the large end opening of front case (5) cavity volume cylindrical shell connects firmly into a whole valve rod assembly with bulb valve rod (8), sour jujube shape shell fragment (9).
5. fuel oil as claimed in claim 1 directly sprays electric oil spraying unit, it is characterized in that, is provided with the turriform trap filter that extends towards the fluid countercurrent current direction at iron core (2) fuel inlet passage cavity.
6. fuel oil as claimed in claim 5 directly sprays electric oil spraying unit, it is characterized in that, described turriform trap filter has a tubular filter screen (16) that is injection-moulded on the skeleton (18), tubular filter screen (16) is axially towards the fluid passage, be located in the central authorities of the trap seat ring (19) that is shaped with sagging annular groove (17), trap seat ring (19) is enclosed within on the periphery of skeleton (18) lower end.
7. fuel oil as claimed in claim 1 directly sprays electric oil spraying unit, it is characterized in that, fuel oil enters larger turriform shape filter (1) the elimination impurity of filter area by iron core (2) upper end open, by iron core (2) intermediate hole passage, flow into armature (10) center-aisle hole, disperse to enter the axial uniform hole of equal section, armature (10) lower end (12), enter in front case (5) cavity volume by upper auricle (13) restricted orifice (15) of sour jujube shape shell fragment (9), the band pressure fuel oil in front case (5) cavity volume sprays in the engine cylinder by valve seat (7) oil spout axial bore (14) again.
8. fuel oil as claimed in claim 1 directly sprays electric oil spraying unit, it is characterized in that, is fixedly connected with valve seat (7) at front case (5) tail end, and the bulb of valve seat (7) and valve rod (8) forms the conical surface and the oil spout axial bore of sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105239823A CN103032222A (en) | 2012-12-07 | 2012-12-07 | Electrically controlled fuel direct injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105239823A CN103032222A (en) | 2012-12-07 | 2012-12-07 | Electrically controlled fuel direct injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103032222A true CN103032222A (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105239823A Pending CN103032222A (en) | 2012-12-07 | 2012-12-07 | Electrically controlled fuel direct injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032222A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975800A (en) * | 2017-05-11 | 2018-05-01 | 宁波方太厨具有限公司 | The central flame cap of burner and application have the burner of the central flame cap |
| CN114458507A (en) * | 2022-03-09 | 2022-05-10 | 哈尔滨工程大学 | Multistage buffering type high-speed electromagnetic valve based on hydraulic-magnetic field combination |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693813A (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | Electronic fuel injection (EFI) rapid electromagnet |
| CN202451333U (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | Electrically controlled direct fuel injection device |
| CN202451419U (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | High-accuracy centering oil inlet valve of electrically controlled high-pressure oil pump |
| CN202451337U (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | Tower type trap filter for electronic-control fuel injector |
-
2012
- 2012-12-07 CN CN2012105239823A patent/CN103032222A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693813A (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | Electronic fuel injection (EFI) rapid electromagnet |
| CN202451333U (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | Electrically controlled direct fuel injection device |
| CN202451419U (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | High-accuracy centering oil inlet valve of electrically controlled high-pressure oil pump |
| CN202451337U (en) * | 2011-12-30 | 2012-09-26 | 成都威特电喷有限责任公司 | Tower type trap filter for electronic-control fuel injector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975800A (en) * | 2017-05-11 | 2018-05-01 | 宁波方太厨具有限公司 | The central flame cap of burner and application have the burner of the central flame cap |
| CN107975800B (en) * | 2017-05-11 | 2024-01-16 | 宁波方太厨具有限公司 | Center fire cover of burner and burner using same |
| CN114458507A (en) * | 2022-03-09 | 2022-05-10 | 哈尔滨工程大学 | Multistage buffering type high-speed electromagnetic valve based on hydraulic-magnetic field combination |
| CN114458507B (en) * | 2022-03-09 | 2022-09-02 | 哈尔滨工程大学 | Multistage buffering type high-speed electromagnetic valve based on hydraulic-magnetic field combination |
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Application publication date: 20130410 |