CN1116870A - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
- Publication number
- CN1116870A CN1116870A CN 94190985 CN94190985A CN1116870A CN 1116870 A CN1116870 A CN 1116870A CN 94190985 CN94190985 CN 94190985 CN 94190985 A CN94190985 A CN 94190985A CN 1116870 A CN1116870 A CN 1116870A
- Authority
- CN
- China
- Prior art keywords
- valve
- iron core
- magnetic tongue
- magnetic
- collision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 51
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 30
- 239000011248 coating agent Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 9
- 210000002105 tongue Anatomy 0.000 claims 9
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 238000012797 qualification Methods 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052759 nickel Inorganic materials 0.000 abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 abstract description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 239000011733 molybdenum Substances 0.000 abstract description 2
- 238000005121 nitriding Methods 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002889 diamagnetic material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003699 hair surface Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/166—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/505—Adjusting spring tension by sliding spring seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9038—Coatings
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
In already known fuel injection valves, wearing parts such as the armature and the core are provided with wear-resistant layers made for example of chromium, molybdenum or nickel. If the parts of the injection valve are galvanically coated, a desired wedge-shaped distribution of the layer thicknesses is achieved that creates only a small bearing area but which is physically predetermined and practically impossible to influence. The new valve has at least one part, for example the armature (27) that has a stepped surface before the wear-resistant layer is applied. The stepped surface may be produced in a variable manner depending on the desired optimum magnetic and hydraulic properties. The ring-shaped bearing section (69) formed by the step has a defined bearing surface or contact width that remains constant during the whole service life of the part, as wearing of the bearing surface in continuous duty does not cause the contact width to increase. This electromagnetic valve is particularly suitable for use in fuel injection systems of mixture compressing, spark-ignited internal combustion engines.
Description
Prior art
The present invention relates to by independent claims a kind of electromagnetic steering valve as described in the preamble.Known have a multiple electromagnetic steering valve, particularly Fuelinjection nozzle, scribbles wear resistant coating on the part easy to wear of these valves.
From DE-A2942928 is known wear-resisting diamagnetic material coating is coated on magnetic tongue (armature) and nozzle body and so on the wear resistant parts.These coatings are used for placing restrictions on the lifting of needle, thereby make the influence minimum of remanent magnetism to the mobile part of Fuelinjection nozzle.
Form wearing face from also known magnetic tongue and the collision plane of DE-A3230844 at Fuelinjection nozzle.For example, these surfaces can nickel plating, also promptly forms a coating, perhaps nitrogenize, i.e. nitriding and hardening.
In addition, also known from DE-A3716072, the injection valve part of wearing and tearing and corrosion is especially easily coated the hard molybdenum coating of very thin one deck, available then spark processing.
DE-A3810826 has narrated a kind of Fuelinjection nozzle, and wherein, at least one collision plane is designed to the ball cap shape, so that obtain split hair space, the central authorities of this collision plane form the spherical liner that a usefulness high-strength nonmagnetic material is made.
From EP-A0536773 is also known a kind of Fuelinjection nozzle arranged, wherein, on the circumferential surface of magnetic tongue and annular collision plane, coat the hard metallic coating of one deck with electroplating.The thickness of this chrome coating or nickel coating is 15-25 μ m.Because usefulness is to electroplate, the distribution of coating thickness is wedgewise slightly, is one extremely narrow than thick coating in edge.Owing to be the EFI coating, so coating thickness distributes and is actually predetermined, and susceptible to.Through after certain operating time, collision plane broadens owing to wearing and tearing, thereby causes the time of drawing in of magnetic tongue and the change of release time.Advantage of the present invention
Electromagnetic steering valve of the present invention with the described feature of independent claims has following advantage in comparison, the shape of at least one part in the part of running foul of each other is made like this, in case form a wearing face, even just can guarantee that collision plane can be because of wearing and tearing enlarge through working over a long time also not, thereby in fact remain unchanged the time of drawing in and the release time of movable part.This point is achieved in that at least one part in the part that runs foul of each other made the stepped shape surface before forming wear resistance.This stepped shape surface can accurately adapt to all situations, thereby obtains optimum magnetic energy and hydraulic performance.
The described measure of dependent claims is precise and tinyization and the improvement to the Fuelinjection nozzle that refers in particular in electromagnetic steering valve, the particularly independent claims.
The split hair surface configuration that processes at least one collision part with the such mechanical device of the bottoming drill that ground is particularly advantageous, so just can obtain split hair size.Use the instrument that finish grinded, can obtain than previous narrower fabrication tolerance, thereby when injection valve was worked, the change of the time of drawing in, the particularly release time of magnetic tongue can be very little.
At least one part for example the stepped shape surface of magnetic tongue also can be coated with or even the antiwear magnetic coating of electroless coating, thereby need not to use the sort of still can't gratifying very little impact zone.
A special advantage is the following fact: available existing technology is the nitridation process sclerosis of plasma nitridation or gas nitriding and so on the surface, impact zone of at least one part in the part that runs foul of each other for example, thereby makes it wear-resisting.
So just obtain very little, an accurate in size annular impact zone, wherein advantageously, in being used as at least one part of backstop, form a step.This collision plane width is that the annular impact zone that contact width is determined remains unchanged in whole operating life, because this step has been arranged, the wearing and tearing that collision plane takes place because of continuous operation can not cause contact width to become big.The collision reliability is fully guaranteed.The bonding phenomenon of hydraulic pressure has no way of because of collision plane is little taking place.Since in the whole lifetime contact width guarantee constant, therefore two collision parts for example the hydraulic pressure in the gap between iron core and the magnetic tongue remain unchanged than also, this is a very big advantage.Accompanying drawing is described
The exemplary embodiments of showing with the accompanying drawing letter of the present invention is described in detail in detail below, in the accompanying drawing:
Fig. 1 represents a Fuelinjection nozzle;
Fig. 2 is the enlarged view of the backstop of injection valve in iron core and magnetic tongue district;
Fig. 3 represents first exemplary embodiments of stepped shape magnetic tongue of the present invention;
Fig. 4 represents second exemplary embodiments of stepped shape magnetic tongue of the present invention;
Fig. 5 represents the 3rd exemplary embodiments of stepped shape magnetic tongue of the present invention.The description of illustrative examples
The illustrative electromagnetic steering valve as the injection valve in the spark ignition explosion-type fuel indection device in internal combustion engine of Fig. 1 has an iron core 2, be with a field coil 1 above it, this iron core 2 is as the fuel inlet seat, here, it is a tubulose, and its external diameter remains unchanged on whole length.Be the winding that field coil 1 is housed on the coil carrier 3 of stepped shape diametrically,, form a special compact structure at field coil 1 position with the constant iron core 2 of external diameter.
One is connected on the lower end 9 of iron core 2 with the concentric intermediate metal tube components 12 of valve longitudinal axis 10 with relying on the ratio method welded seals, and its part is entangled iron core lower end 9 in the axial direction.In the axial direction, the part of stepped shape coil frame 3 overlaps with iron core 2, and at least a portion of its larger-diameter step 15 overlaps with centre part 12.In the downstream of coil carrier 3 and centre part 12 a tubular valve mounting 16 is arranged, it for example is fixedly connected on the centre part 12, and a vertical hole 17 concentric with valve longitudinal axis 10 arranged in valve seat frame 16.In this vertical hole 17 a tubulose needle 19 is housed, its lower end is solder-connected on the spherical valve closure body 21 with ratio method, and having for example on the side face of this spherical valve closure body 21,5 flattening planes 22 flow through for fuel oil.
Injection valve is worked in existing mode with calutron.The electromagnetic circuit that comprises field coil 1, iron core 2 and magnetic tongue 27 is used for mobile in the axial direction needle 19, thereby overcomes the elastic force of Returnning spring 25 and open injection valve or close injection valve.With the valve closure body 21 relative end of magnetic tongue 27 by first weld seam 28 and needle 19 links to each other and aligns with iron core 2.In vertical hole 17, valve seat frame 16 be positioned at downstream and an end relative with iron core 2, with welded seal a cylinder valve pedestal 29 is housed, wherein form a fixed valve base.
The insertion depth of valve body 29 and kettle shape spray holes disk 34 is determining the predetermined lifting height of the needle 19 that matches with it.When field coil 1 no electric circuit, the determining positions of needle 19 1 ends in the supporting of valve closure body 21 on the valve seat of valve body 29 against, and when field coil 1 energising, the determining positions of needle 19 the other ends in the supporting of magnetic tongue 27 on iron core end face 9 against, promptly on the zone that is shaped by the present invention against, specially mark with a circle in the drawings in this zone.
The regulating sleeve 48 with in the concentric fuel flow orifice 46 of valve longitudinal axis 10 that is rolled into Steel Spring Plate, be inserted in iron core 2 is used for regulating the biasing elastic force that is resisted against the Returnning spring on this regulating sleeve 48, and the other end of this Returnning spring is resisted against on the needle 19.
The major part of injection valve is enclosed within on the plastic pattern casting die 50, and this molding extends through field coil 1 and arrival valve seat frame 16 in the axial direction from iron core 2 always.The constituent element of this plastic pattern casting die 50 for example electrical plug 52 is molded into one with it.
One oil purifier 61 stretches in the entrance point 55 of fuel flow orifice 46 of iron core 2, thereby guarantees because too big and can cause injection valve to stop up or the fuel oil composition that damages is filtered.
In Fig. 2, needle 19 1 end regions of irising out with a circle among Fig. 1 also are that the zone that the end 9 of magnetic tongue 27 and iron core 2 bumps is represented with enlarged view.Being plated to for example metallic coating 65 of chromium or nickel coating on the end 9 of iron core 2 and the magnetic tongue 27 with galvanoplastic is that everybody is known, this moment, coating 65 both was coated onto on the end face 67 vertical with valve longitudinal axis 10, was again to be coated onto on a part of circumferential surface 66 of magnetic tongue 27 at least.These coatings 65 are wear-resisting especially, and reduce the bonding possibility of collision plane generation hydraulic pressure with its little surface, but it is bonding to guarantee that hydraulic pressure does not take place.The thickness of these coatings 65 is generally 10-25 μ m.
Injection valve is wanted and can be worked smoothly, and iron core 2 and magnetic tongue 27 must only bump on than the zonule, and for example only the outer end region away from valve longitudinal axis 10 in magnetic tongue 27 upper-end surfaces bumps.Galvanoplastic can be used to satisfy specially this requirement.In plating, form a line of electric force concentration zones in the edge of part to be plated (being iron core 2 and magnetic tongue 27 here), thereby form the coating that thickness distribution shown in Figure 2 is wedge shape.Therefore, during injection valve work, 65 of this wedge shape coatings are stressed on a zonule.But after continuous work, the impact zone can't remain unchanged, because coating 65 positions are owing to repeatedly collision above being subjected to is worn and torn, so collision plane is increasing, thereby wedge shape is also more and more littler.Contrast with above-mentioned situation, Fig. 3 illustrates magnetic tongue 27 an of the present invention part in end face 67 zones thereon, and this end face is at coating layer or form surface abrasion resistance and made a stepped part 70 in the past earlier.
The thickness distribution of the coating 65 that forms with EFI is actually predetermined and susceptible to, and the step of magnetic tongue 27 pre-determines and generates according to required numerical value before can or forming surface abrasion resistance at coating layer, thereby in use, under any circumstance all can obtain best magnetic property and hydraulic performance.Use through the correct grinding flat bottom bit, the fabrication tolerance of this step can be narrower, thus magnetic tongue 27 draw in the change of release time can be minimum.The stepped part 70 of this end face 67 also can be coated with the wear resistant coating with electroless coating, and this coating can be a magnetic also, still can't gratifying very little collision plane thereby need not to use.
In addition, in its collision section 69 zones, available hardening process carries out surface treatment and makes wear-resisting end face 67 at least.Can use existing nitridation process such as plasma nitridation or gas nitriding as this hardening process for this reason.
Because the stepped part 70 in magnetic tongue shown in Figure 3 27 upper-end surfaces 67 constitutes a dimple, therefore can guarantee the collision plane width and thereby contact width be remained unchanged in the whole lifetime of injection valve.The effect of stepped part 70 is to form the annular collision section of accurately making 69 on end face 67.
When injection valve was constantly worked, magnetic tongue 27 can upwards repeatedly collide iron core 2.This just means that also certain wearing and tearing always take place collision plane.Owing to stepped part 70 has been arranged, has given prominence to significantly on step bottom surface 71 as the collision section 69 in magnetic tongue 27 upper-end surfaces 67 of backstop.This width be the ring-type collision section 69 of projection of 20-500um in the exemplary embodiments of Fig. 3 between circumferential surface 66 and profile are for the stepped part 70 of extending inwards, thereby be used as a backstop.The contact width b of this collision section 69 remains constant in whole duty cycle.Therefore above-mentioned wearing and tearing are to collision face width degree or not at all influence of contact width.The bonding phenomenon of hydraulic pressure has no way of because of collision plane is little taking place.Because it is constant that contact width is guaranteed in whole lifetime, therefore two collision parts, be that hydraulic pressure in the gap between iron core 2 and the magnetic tongue 27 remains unchanged than also, this is a very big advantage.Compare for straight collision plane with collision section 69, the invention has the advantages that, collision plane leaves step bottom surface 71 axial distance more than the one 5 μ m.The degree of depth of suitable selection width b and step bottom surface 71 is for example selected this degree of depth as 5-15 μ m as, can obtain best magnetic property and hydraulic performance.
Also can see, at coating layer or before forming wearing face, can on magnetic tongue 27 and iron core 2, form corresponding stepped part 70 simultaneously, thereby on two collision ends, form the point-device annular collision of size section 69 simultaneously, as shown in Figure 3, in addition, can only on iron core 2, form this stepped part 70, and magnetic tongue 27 is for example made straight end face.Though these non-representative example are actually rare in actual applications, in the geometrical shape of step, be not except the exemplary embodiments of magnetic tongue shown in Figure 3 27, they are not worth mentioning.
Fig. 4 and Fig. 5 illustrate two exemplary embodiments in addition of the magnetic tongue 27 that is shaped by the present invention, can see, for example, collision section 69 directions along valve longitudinal axis 10 are formed on the end face 67, and stepped part 70 is in off-axis (Fig. 4) on the outward direction of circumferential surface 66.Fig. 5 describes an exemplary embodiments of magnetic tongue 27, and wherein, collision section 69 is between the inside and outside stepped part 70 on circumferential surface 66 and valve longitudinal axis 10 directions.
Owing at least one end face 67 in magnetic tongue and/or the iron core 2 stepped part 70 is arranged, therefore also can use the technology of aforesaid raising end face 67 wear resistancies different with nickel plating or chromium plating.For example, change the surface structure of magnetic tongue 27 and/or iron core 2 by using plasma nitriding, gas nitriding or carburizing hardening process afterwards, thereby even can fully phase out direct coating.
Claims (8)
1, a kind of electromagnetic steering valve, particularly a kind of injection valve that is used for fuel indection device in internal combustion engine, one valve longitudinal axis is arranged, the iron core that one usefulness ferromagnetic material is made, one field coil and a magnetic tongue, the valve closure body that this magnetic tongue promotes and fixed valve base cooperatively interacts, and when this field coil energising, inhaled and collided the collision plane of iron core, it is characterized in that, in the both ends of the surface (67) of two relative part magnetic tongues (27) and iron core (2) at least one is divided into collision section (69) and at least one stepped part (70), it is recessed that this stepped part should be collided section (69) relatively, and at least one collision section (69) has the width (b) of qualification.
2, by the described valve of claim 1, wherein, the width (b) of described at least one collision section (69) of magnetic tongue (27) and/or iron core (2) only accounts for the part of end face (67) diameter.
3, by the described valve of claim 2, wherein, magnetic tongue (27)/or iron core (2) on the width of described at least one collision section (69) be 20-500 μ m.
4, by the described valve of claim 1, wherein, the stepped part (70) that plays self collision section (69) of iron core (2) and/or magnetic tongue (27) the above at least one stretches towards the direction of valve longitudinal axis (10).
5, by the described valve of claim 1, wherein, described at least one stepped part (70) that plays self collision section (69) on iron core (2) and/or the magnetic tongue (27) stretches towards the direction of leaving valve longitudinal axis (10).
6, by the described valve of claim 1, wherein, iron core (2) and/or magnetic tongue (27) scribble coating in end face (67) zone.
7, by the described valve of claim 6, wherein, the coating that should be finished by coating process is a magnetic.
8, by the described valve of claim 1, wherein, iron core (2) and/or magnetic tongue (27) are handled with hardening process in end face (67) zone.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4341961.5 | 1993-12-09 | ||
| DE4341961 | 1993-12-09 | ||
| DEP4421947.4 | 1994-06-23 | ||
| DE4421947A DE4421947A1 (en) | 1993-12-09 | 1994-06-23 | Electromagnetically actuated valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1116870A true CN1116870A (en) | 1996-02-14 |
| CN1055524C CN1055524C (en) | 2000-08-16 |
Family
ID=25931898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94190985 Expired - Lifetime CN1055524C (en) | 1993-12-09 | 1994-11-24 | Electromagnetic valve |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0683861B1 (en) |
| JP (2) | JPH08506876A (en) |
| CN (1) | CN1055524C (en) |
| BR (1) | BR9406081A (en) |
| CZ (1) | CZ284430B6 (en) |
| ES (1) | ES2113722T3 (en) |
| RU (1) | RU2131992C1 (en) |
| WO (1) | WO1995016125A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416085C (en) * | 2004-02-27 | 2008-09-03 | 株式会社京浜 | Electromagnetic fuel injection valve and method of manufacturing the same |
| CN100419251C (en) * | 2004-02-27 | 2008-09-17 | 株式会社京浜 | Electromagnetic fuel injection valve and method of manufacturing the same |
| CN103016226A (en) * | 2011-09-27 | 2013-04-03 | 日立汽车系统株式会社 | Fuel injector |
| CN108700220A (en) * | 2016-02-26 | 2018-10-23 | 罗伯特·博世有限公司 | Solenoid valve |
| CN112424858A (en) * | 2018-07-19 | 2021-02-26 | 浜名湖电装株式会社 | Alarm for vehicle |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10256662A1 (en) * | 2002-12-04 | 2004-06-17 | Robert Bosch Gmbh | Fuel injector |
| JP2003301757A (en) | 2002-04-09 | 2003-10-24 | Aisan Ind Co Ltd | Solenoid-operated fuel injection valve |
| JP2007205234A (en) | 2006-02-01 | 2007-08-16 | Denso Corp | Fuel injection valve |
| DE102010064097A1 (en) | 2010-12-23 | 2012-06-28 | Robert Bosch Gmbh | Electromagnetically actuatable valve e.g. fuel injection valve of internal combustion engine, has movable valve needle with lower stopper comprising top stop face with elevations and depressions on which armature rests |
| JP2012246789A (en) * | 2011-05-25 | 2012-12-13 | Denso Corp | Fuel injection valve |
| JP6087210B2 (en) | 2013-05-24 | 2017-03-01 | 日立オートモティブシステムズ株式会社 | Fuel injection valve |
| DE102014200574A1 (en) * | 2014-01-15 | 2015-07-16 | Robert Bosch Gmbh | Non-tacky nip for valves with solenoid solenoid actuation |
| EP3118442B1 (en) * | 2014-03-14 | 2020-10-14 | Hitachi Automotive Systems, Ltd. | Electromagnetic valve |
| JP6381946B2 (en) * | 2014-04-14 | 2018-08-29 | 日立オートモティブシステムズ株式会社 | Fluid control solenoid |
| JP5862713B2 (en) * | 2014-06-27 | 2016-02-16 | 株式会社デンソー | Fuel injection valve |
| DE102015205430A1 (en) * | 2015-03-25 | 2016-09-29 | Robert Bosch Gmbh | Electromagnetically actuated quantity control valve, in particular for controlling the delivery rate of a high-pressure fuel pump |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3230844A1 (en) * | 1982-08-19 | 1984-02-23 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTROMAGNETICALLY ACTUABLE VALVE |
| IT1175561B (en) * | 1984-07-12 | 1987-07-01 | Spica Spa | IMPROVED ELECTROINJECTOR FOR FOOD FUEL TO A C.I. ENGINE |
| JPH0735763B2 (en) * | 1987-05-27 | 1995-04-19 | 株式会社日立製作所 | Electromagnetic fuel injection valve with excellent impact resistance and wear resistance |
| IT1222137B (en) * | 1987-07-27 | 1990-09-05 | Weber Srl | IMPROVED ELECTROINJECTOR FOR FOOD FUEL WITH INTERNAL COMBUSTION ENGINES |
| DE3834447A1 (en) * | 1988-10-10 | 1990-04-12 | Mesenich Gerhard | ELECTROMAGNETIC INJECTION VALVE AND METHOD FOR THE PRODUCTION THEREOF |
| DE3834444A1 (en) * | 1988-10-10 | 1990-04-12 | Mesenich Gerhard | ELECTROMAGNETIC INJECTION VALVE WITH DIAPHRAGM SPRING |
| IT1250845B (en) * | 1991-10-11 | 1995-04-21 | Weber Srl | ELECTROMAGNETICALLY OPERATED FUEL DOSING AND PULVERIZING VALVE FOR AN ENDOTHERMAL MOTOR FEEDING DEVICE |
-
1994
- 1994-11-24 BR BR9406081A patent/BR9406081A/en not_active IP Right Cessation
- 1994-11-24 ES ES95900659T patent/ES2113722T3/en not_active Expired - Lifetime
- 1994-11-24 EP EP95900659A patent/EP0683861B1/en not_active Expired - Lifetime
- 1994-11-24 RU RU95120217A patent/RU2131992C1/en not_active IP Right Cessation
- 1994-11-24 JP JP7515871A patent/JPH08506876A/en active Pending
- 1994-11-24 CN CN 94190985 patent/CN1055524C/en not_active Expired - Lifetime
- 1994-11-24 WO PCT/DE1994/001389 patent/WO1995016125A1/en active IP Right Grant
- 1994-11-24 CZ CZ951980A patent/CZ284430B6/en not_active IP Right Cessation
-
2007
- 2007-03-14 JP JP2007065577A patent/JP4755619B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416085C (en) * | 2004-02-27 | 2008-09-03 | 株式会社京浜 | Electromagnetic fuel injection valve and method of manufacturing the same |
| CN100419251C (en) * | 2004-02-27 | 2008-09-17 | 株式会社京浜 | Electromagnetic fuel injection valve and method of manufacturing the same |
| CN103016226A (en) * | 2011-09-27 | 2013-04-03 | 日立汽车系统株式会社 | Fuel injector |
| CN108700220A (en) * | 2016-02-26 | 2018-10-23 | 罗伯特·博世有限公司 | Solenoid valve |
| CN108700220B (en) * | 2016-02-26 | 2020-12-29 | 罗伯特·博世有限公司 | Electromagnetic valve |
| CN112424858A (en) * | 2018-07-19 | 2021-02-26 | 浜名湖电装株式会社 | Alarm for vehicle |
| CN112424858B (en) * | 2018-07-19 | 2024-05-10 | 浜名湖电装株式会社 | Alarm for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ284430B6 (en) | 1998-11-11 |
| JP2007187167A (en) | 2007-07-26 |
| RU2131992C1 (en) | 1999-06-20 |
| JPH08506876A (en) | 1996-07-23 |
| EP0683861A1 (en) | 1995-11-29 |
| EP0683861B1 (en) | 1998-03-04 |
| ES2113722T3 (en) | 1998-05-01 |
| JP4755619B2 (en) | 2011-08-24 |
| CN1055524C (en) | 2000-08-16 |
| CZ198095A3 (en) | 1996-05-15 |
| WO1995016125A1 (en) | 1995-06-15 |
| BR9406081A (en) | 1996-02-06 |
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