CN105179131A - Process For Producing An Injection Valve For An Internal Combustion Engine And Injection Valve For An Internal Combustion Engine - Google Patents
Process For Producing An Injection Valve For An Internal Combustion Engine And Injection Valve For An Internal Combustion Engine Download PDFInfo
- Publication number
- CN105179131A CN105179131A CN201510309581.1A CN201510309581A CN105179131A CN 105179131 A CN105179131 A CN 105179131A CN 201510309581 A CN201510309581 A CN 201510309581A CN 105179131 A CN105179131 A CN 105179131A
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- China
- Prior art keywords
- valve head
- valve
- glaze slip
- injection valve
- oxide
- Prior art date
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Classifications
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/005—Coating with enamels or vitreous layers by a method specially adapted for coating special objects
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/02—Coating with enamels or vitreous layers by wet methods
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D7/00—Treating the coatings, e.g. drying before burning
-
- 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
- F02M2200/903—Glass
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to a process for the preparation of an injection valve (1) for an internal combustion engine. The injection valve (1) comprises a valve body (5) with a valve head (6), the valve head has at least one spray hole (10). The valve head (6) is adapted to at least partly arranged in a combustion chamber (4) of the engine or disposed that at least directly facing the combustion chamber. The valve head (6) is at least partially coated by the following steps with a coating: - passing through the valve body (5) with a fluid, wherein the fluid through an injection hole (10) and emerges from the valve head (6) - at least regionally coating a gaze slip on the valve head (6) with fluid passing through, - drying the gaze slip applied on the valve head (6), - heating the gaze slip applied to the valve head (6) for forming an enamel coating layer(9). Furthermore, the invention relates to an injection valve (1) for an internal combustion engine, in particular produced by the above method.
Description
The present invention relates to the method for the injection valve producing explosive motor, particularly relate to the motor vehicle according to claim 1 preamble.The invention still further relates to the injection valve for explosive motor according to claim 7 preamble.
It is kinetic energy that explosive motor is used as the Conversion of Energy in fuel.Flammable with effective mixture in order to obtain in combustion process, fuel must mix with ambient air, especially with the oxygen (O in air
2) mixing.Especially in the motor vehicle, provide required mixture to be conventional until not long ago by the Carburetor outside firing chamber, present modern injection systems is general always.Use the injection valve of these ejecting systems (sparger) to be injected directly to the quantity of accurate measurement by fuel and be full of (directly injection) in the relevant fuel chambers of air.In this process, be atomized in the air of fuel in respective firing chamber, to realize the burning of especially low-emission reliably.Like this, the formation of present mixture almost only occurs in firing chamber.
Depend on used fuel, explosive motor is divided into application igniter motor and automatic ignition motor substantially.Here, Otto engine is application igniter motor, and diesel engine is considered to automatic ignition motor.In Otto engine, the mixture be in firing chamber is compressed at first such as passes through spark ignitor subsequently.By contrast, in the case of diesel engines, compression concentrates on the air being supplied to firing chamber, and it experienced by the quick increase of temperature here.The temperature produced in this process is enough to start the igniting that must be injected into compressed-air actuated diesel fuel subsequently.
In direct course of injection, because fuel has to directly be introduced in the independently firing chamber of explosive motor, the valve head of injection valve directly exposes to the open air in the heat produced in combustion process.Here, valve head part is arranged in firing chamber or at least so that directly towards described firing chamber.In any case, valve head directly stands ignition heat.Therefore, situation especially valve head stand extra high requirement in this mounting point.It not only must bear high temperature but also sometimes bear high jet pressure and temperature shock.Also must consider the corrosion impact of the products of combustion due to combustion process formation, this especially plays an important role to the use of substitute fuel.
Except fuel such as gasoline, diesel oil, the liquid gas (liquefied petroleum gas (LPG) of liquid form that motor vehicle load, LPG) or beyond LNG Liquefied natural gas (LNG), also the fuel existed in a gaseous form can be used, such as, with compressed natural gas (CNG) or hydrogen (H
2) form.Further substitute fuel comprises such as ethanol (C
2h
6or methyl alcohol (CH O)
4o).
Although high load, the injection valve of described type must allow reliable operation, especially in the motor vehicle.Situation must be like this, has nothing to do with the cornering ability of driving pattern, vehicle, respective weather conditions and the fuel that uses.When selecting the material be applicable to being used for such injection valve, thus situation is normally at least for the austenitic steel of the valve head use rust-proofing of high load.
When using described injection valve, observing some products of combustion after running a period of time and being deposited on valve head.In this, it is more Zao, faster that the passivating layer ratio that known such sediments is formed at the protection austenitic steel surface be made up of chromium oxide (CrO) is formed at the surface be made up of copper (Cu) or brass (CuZn).This sediments normally cigarette ash, especially oil carbon.
The problem that sediments causes has the fact of the trend burnt away at the end of burn cycle owing to these, and this and glow plug are similar.Then due to the uncontrollable burning of fuel-air mixture, this finally causes the volatile organic matter (discharge of hydrocarbon) in waste gas with undesirable high level.
Minimize to make the sediments formed on the valve head of injection valve or even stop and form sediments on the valve head of injection valve, from the known material be applicable to valve head surface coverage one deck of prior art.
Therefore, such as DE4222137B4 discloses the fuel injection mouth for diesel internal combustion motor.This comprises the nozzle body with spray-hole, and spray-hole penetrates described nozzle body, and is coated with coating on the wall of spray-hole.Coating makes towards the opening of spray-hole thickening, so that spray-hole is tapered towards their opening.Coating itself is by hard material such as chromium, nickel, nickel-phosphorus, nickel-boron, nickel-cobalt-boron, Al
2o
3, Cr
2o
3, TiO
2, Cr
3c
2, SiO
2, AlSi, NiCr, WTi or WC formed.
DE19951014A1 discloses the Fuelinjection nozzle of the coating equally with the region at least broadened around floss hole opening.This coating be the oxide of Co or Ni or cobalt oxide or nickel oxide or cobalt alloy or nickel alloy or Ru or Rh or Pd or Os or Ir or Pt or these metals each other or the catalytic active layer of alloy with other metal.
According to by plating or the example of platinum (Pt) coating that produced by vapor deposition, in practice, its effect inadequate becomes very clear.Cause this fact to be in the running of explosive motor, the valve head of injection valve only operates in the quite low temperature range of 200 DEG C-350 DEG C.This may owing to injected that enter with owing to being injected into and evaporating (latent heat) and contact that the fuel taken away from valve head by heat when contacting continues.But described temperature range is enough not high, so that in fact the catalytic combustion of the droplet-like fuel particle on valve head does not start under the existence of platinum (Pt).
From patent application DE102013213993.4 further, this can trace back to claimant, produces the valve head of injection valve and apply it from PM (powder metallurgy) aluminium.In this case, such as CeO, Pr or other catalytic active substance are embedded into Al
2o
3anodic oxide coating or TiO
2possible in plasma electrodeposited coating.But the substitute of valve head made of aluminum brings the problem changing different thermal expansion coefficient.
Further, JP2007-309167A discloses the firing chamber purging system of explosive motor.For this reason, by the surface of titanium dioxide-coated to the injection opening of sparger.
JP2005-155618A discloses the technique forming the coating be made up of titanium dioxide on the nozzle of injection valve.
Such as, although the layout that result is noble coatings can accelerate the sedimental burning existed, performance and local arrange that result also in the sedimental of uncontrollable existence glows in addition.Generally speaking, the technique of therefore following the trail of physics or chemical vapor deposition (PVD/CVD) up to now and the technique relating to plating measure generation all can not be made to be applicable to for reliably stoping the coating of sedimental formation and relevant inferior position to become possibility.
Observe according to this, therefore the injection valve of the explosive motor especially explosive motor of motor vehicle still has the space of improvement.
For background technique, the present invention is based on the technique and a kind of injection valve for explosive motor developed further for the production of injection valve, so that the target of the method for the coating providing possible cost-efficient formation to be applicable to, this coating to can be incorporated in existing production sequence and guarantees to improve the reliable effect of the waste gas value formed in running.
The solution of the part that the technique of described target is correlated with is the content of the method for the feature with claim 1.The part that the product of described target is correlated with realizes according to the injection valve of the feature with claim 7.Particularly advantageous improvement of the present invention is open by respective dependent claims further.
It should be noted that and can be combined with each other the method and feature that describe in detail separately in following specification in the technical significant mode of any needs, because further disclosed herein improvement of the present invention.
Accordingly, technique according to the present invention comprises the injection valve producing explosive motor.Particularly preferably, explosive motor is the motor of motor vehicle.
Routinely, injection valve comprises the valve body with valve head.Valve head is provided to inject fuel in the firing chamber of explosive motor.For this reason, when injection valve is in installment state in the later stage, valve head is designed to be arranged at least partly in the firing chamber of explosive motor.If valve head is designed to flush as much as possible with the surface limiting firing chamber, so valve head is at least arranged as so that directly towards firing chamber.In addition, described valve head at least applies applicable coating in part area.
According to the present invention, coating is enamel layer (EmailBeschichtung).Comprise the following steps with the method that mode according to the present invention is formed needed for enamel layer:
-make fluid pass valve body, fluid is deviate from from valve head by spray-hole,
-glaze slip is coated at least part of region of the valve head that fluid flows through,
-drying is coated to the glaze slip of valve head,
-heating is coated to the glaze slip of valve head to form enamel layer.
In this regard, be that at least part of region on the valve head of the valve body of injection valve forms enamel layer according to the essence of technique of the present invention.Compared to providing layer of precious metal, this advantage produced is the deposition according to enamel layer of the present invention oil resistance carbon to a great extent.At this on the one hand, enamel layer not only plays the effect reducing the such temperature needed for sediments of burn off, and stops or at least reduce its formation from the beginning.
---especially drops---deposition and dry on enamel layer that causes this knowledge to be the fluid composition in fact not having fuel.This valve head being considered to be in injection valve is formed the main cause as coal tar oil lamella.So prevent from or reduce such sediments at least in a large number meaning that its possible glowing is no longer possible.Can make and the comparing of the loose cooker easy understand be made up of high-quality steel combined with oil or fat at this point.The loose point of such character burns into the surface of high-quality steel equally very securely, and only such as swipes could again remove by machine treatment.
In addition, enamel layer according to the present invention plays the effect of the extra heat insulator with corresponding heat insulating function.In other words, the heat taken away from enamel layer by fuel has obstruction.Like this, in the running of explosive motor, provide the enamel layer at outer surface with high initial temperature.Result is that catalytic reaction can generation as far as possible early.
Due to enamel layer according to the present invention, the valve head of injection valve effectively form protection thermal insulation and anti-adhesion layers, correspondingly improve the waste gas value formed in explosive motor running about protective function.
By the heat resistanceheat resistant performance of enamel layer, this is very durable for its operating position and the relevant heat load acted on it.
Can advantageously be readily incorporated in the existing technique of producing injection valve according to the layout of enamel layer of the present invention.Preferably in advance valve head and valve body can be connected to each other by laser bonding.Especially preferred is in valve head, made at least one spray-hole by corroding before making this connection.When corroding (such as erosion) needs conductive material, this is advantageously.Because the enamel layer of oxidation has electrical insulation effect, therefore must not only be formed after the erosion of valve head.
In order to correspondingly keep spray-hole unimpeded in enamel layer forming process, fluid, through injection valve, especially has the valve body of valve head through it.Especially preferred be fluid can be pressurized air, and it obtains usually in such technology chain, otherwise can be easy to obtain.Fluid advantageously passes until glaze slip has completed dry and hardening.In this respect, the step of passing the glaze slip that can reduce dry coating of fluid.In other words, due to the fact of glaze slip drying, passing of fluid need not be kept in the heating steps process forming enamel layer.
Especially preferred, enamel layer can be oxidation and be also level and smooth and be the enamel layer of catalytic activity.Alternatively or in addition, enamel layer also can be the form of " clean enamel ".Such as, such enamel layer is well-known with the liner of household electric appliance such as baking box.If baking box runs at than usually higher temperature, these comprise self-cleaning effect.Then this relates to purification annealing, and the sediments such as oil lamella of any attachment wherein can by complete catalytic decomposition without the need to mechanism.And, the thermal insulation function of enamel layer can be improved by the titanium oxide adding higher proportion.
For the purposes of the present invention, should be understood that the initial basis of the enamel layer that slurry or glaze slip are to provide.The dough of the form of this preferred mineral mixture, exists with the fluid of pasty state to the denseness of viscous, and is coated to the coarse part of head zone in a suitable manner.
Such as contact process or no-contact, the use about painting method can be expected for coating.Therefore, such as glaze slip can be covered by means of feeding rod or feeding brushing.In addition, such as coating can be completed particularly by airless spraying by spraying.
According to the Advantageous developments of basic principle of the present invention, valve head can be impregnated in glaze slip and apply glaze slip.These give the advantage of the method that very simply and clearly limits of coating glaze slip.In addition, the coating of this form is very economical, because such as it is without any need for extra energy, such as, in spraying, accelerates independent slurry particle.In addition, the most important thing is can not produce spray in this case; By experience, this makes not only may again process injection valve but also high flow rate glaze slip.
The glaze slip of dry coating subsequently, such as, in ambient air or pass through heated air jets.
The present invention is preferably defined in the dry glaze slip being coated to valve head in oven.Like this, generally speaking can accelerate drying process and thus accelerate production technology.In addition, because so controlled drying accurately can determine time of drying, and further step can be used to adjust the time precision of time of drying.
The slurry of heat drying is for the formation of enamel layer subsequently.For the purposes of the present invention, it should be understood that heating also refers to annealing, sintering, baking.
This one side, contemplate the temperature of 800 DEG C of-900 DEG C of scopes for the purposes of the present invention, the slurry of coating preferably heats in this temperature range.Especially preferred is use shielding gas to complete heating.By heating under a shielding gas, incrustation and the variable color of the layer that the outside thread of spark plug is formed especially effectively can be stoped.
According to Advantageous developments, enamel layer can be formed as the little layer thickness only with 50 μm-80 μm.Due to this, improved plan is provided also to be possible for existing injection valve, because do not need again to process at least one spray-hole.
Depend on requirement, conceivable is at least part of region roughening making valve head before coating glaze slip.Thus, the basis of coating glaze slip is provided by the roughening operation be applicable to of valve head.This on the one hand, can complete roughening by such as sandblasting.Self-evidently can also imagine and further make the suitable preparation technique becoming possible roughening for the surface applying glaze slip separately.This roughening is mainly used as between valve head and the surface of enamel layer, provide durable combination.Result is the surface that the latter can be fixed on valve head preferably.In addition, surface of contact is expanded by roughening.
The present technique proposing to produce injection valve according to the present invention provides has the possible method that cost-benefit formation can be attached to the coating of the enamel layer form in existing production sequence easily.In this case, enamel layer according to the present invention prevents liquid fuel to deposit on valve head with drops, itself otherwise can dry up on the surface of valve head.Here, after a period of time, described drop leaves tar and/or the carbon plate layer of not easy-clear.Such lamella has the discharge of explosive motor in its running adversely to be affected.Especially, valve head enamel layer according to the present invention has as the effect of catalyzer the impact making described drop in valve head surface evaporation, does not therefore form lamella.
The invention still further relates to the injection valve of the explosive motor especially explosive motor of motor vehicle.Preferably above-mentioned technique according to the present invention produces injection valve.
In this case, injection valve comprises the valve body with valve head.Valve head at least has a spray-hole.Valve head is designed to be arranged in the firing chamber of explosive motor at least partly, or at least direct towards described firing chamber.In addition, valve head is at least part of region applying coating.According to the present invention, coating is enamel layer.Alternatively, coating also at least comprises enamel.
More than combine the advantage having explained generation according to the technique of production injection valve of the present invention, and be correspondingly applicable to according to injection valve of the present invention.In addition, the further advantage of the improvement according to injection valve of the present invention of the following stated is also suitable for.For this reason, now with reference to above done statement.
According to the favourable improvement of injection valve according to the present invention, enamel layer is formed by starching especially glaze slip.About the component of glaze slip, define being made up of at least one glass forming oxide except the additional component of at least one and (if necessary) extra at least one opacifiers.
Such as, the group of possible glass forming oxide be at least following in one:
-silica (SiO
2)
-diboron trioxide (B
2o
3)
-sodium oxide (Na
2o)
-potassium oxide (K
2o)
-aluminium sesquioxide (Al
2o
3)
Self-evidently this inventory is not deterministic, thus can also imagine further network former.
About the component that at least one is other, such as, can derive from following group:
-borax
-feldspar
-quartz
-fluoride
-soda
-sodium nitrate
Here situation is that this inventory neither be deterministic, thus can also imagine further component.
If necessary, as at least one opacifiers added, such as, can select from following group:
-titanium (Ti)
-zirconium (Zr)
-molybdenum (Mo)
Similarly this is not deterministic inventory, therefore can also imagine other opacifiers such as tin ash or titanium silicate.
Enamel layer according to the present invention is preferably molten mixture.In glazing temperature, glass forming oxide is melted in together to form glass melt.Substrate enamel comprises the borax of about 23-34% weight, the feldspar of 28-52% weight, the quartz of 5-20% weight, the fluoride of about 5% weight, and remainder is soda and sodium nitrate.As already mentioned, the oxide of Ti, Zr and Mo can be used as opacifiers.
And, ceramic paint such as iron oxide, chromium oxide and spinel can also be there is.
In order to improve the adhesion especially on metal matrix, also comprise at least one oxide in such as following group in addition according to enamel layer of the present invention:
-cobalt oxide
-manganese oxide
-nickel oxide
In preferred improvement, described matrix be fine grinding with thawing.Melt is quenching, and that is preferably introduce water, therefore granular glass frit produces, in a subsequent step fine grinding again.Such as, the water of 30%-40% and clay and quartz powder are added in grinding operation.Depend on the kind of enamel, also add opacifiers and coloring oxide.
This results in glaze slip, in order to good mixing, before reusing glaze slip, should the regular hour be left standstill, preferred several days.The use of the modifier be applicable to guarantees to have consistent layer thickness.
Make the level and smooth this respect of enamel layer, the latter preferably comprises a high proportion of cerium oxide (CeO).By its catalysis, concentrate on the fuel droplet evaporation on the surface of enamel layer.As a result, the sediments may subsequently with adverse effect is not formed.And, thus the initial temperature advantageously reducing fuel combustion and the hydrocarbon (HC) burnt incompletely and carbon monoxide (CO).Result similarly reduces the discharge value in explosive motor.
At the structure this respect of at least one spray-hole through valve head, the present invention specifies that the enamel layer wherein existed has cone-shaped form.Alternatively or in addition, it can have the structure of horn shape.This reason in the process forming enamel layer, allows fluid flow valve body to keep the step that spray-hole is unimpeded in the process of coating glaze slip.Here, due to the character shape of the spray-hole of the above-described formation about enamel layer, described fluid flows out valve head by spray-hole.The advantage produced is the turbulent flow of the improvement of the fuel in use deviate from from spray-hole.
Further advantage details of the present invention and effect will be explained in more detail based on the exemplary embodiment of exemplary illustration in the following drawings.In figure:
Fig. 1 illustrates the side view according to injection valve of the present invention; And
Fig. 2 shows the injection valve that the end side surface from valve head in Fig. 1 is observed.
Fig. 1 shows the exemplary illustration according to injection valve 1 of the present invention by explained hereafter according to the present invention.There is provided described injection valve 1 for explosive motor (not illustrating in greater detail).The explosive motor of explosive motor especially motor vehicle.It also illustrate the part wall 2 (not illustrating in greater detail) of the cylinder head 3 of explosive motor, injection valve 1 is installed by this wall.Here, the subregion of injection valve 1 is projected in the firing chamber 4 of explosive motor.
Injection valve 1 mainly comprises valve body 5.Towards firing chamber 4, the part valve body 5 be placed in especially at least partly in described firing chamber has valve head 6.With the dotted line conduit 7 explained in injection valve 1 that the longitudinal direction of injection valve 1 extends.By injection valve 1, fuel (not showing in detail) can be ejected in firing chamber 4 via conduit 7.
In the present case, the valve head 6 outside front 8 with enamel layer 9 is provided.Depend on needs and the setting depth especially in firing chamber 4, enamel layer 9 only extends on valve body 5 on front 8 or up over it.
The injection valve 1 that the front 8 from valve head 6 that Fig. 2 shows Fig. 1 is observed.In order to make injection valve 1 clear as far as possible at the existing view of longitudinal direction a, the wall 2 not showing cylinder head 3 and the outside being in firing chamber 4 and the end regions of injection valve 1 shown in FIG.
As can be seen from the figure, valve head 6 have multiple in the scope of this view visible spray-hole 10, fuel enters firing chamber 4 by spray-hole 10 in the mode of more detailed display.Six spray-holes 10 distribute, to be in identical radial distance with described longitudinal shaft around the vertical central axis a of injection valve 1.Exhaust openings described here is equidistant relative to each other to install on the bias with identical angle b in varied situations mutually.
Reference numerals list
1 injection valve
The wall of 23
3. cylinder head
4 firing chambers
The valve body of 51
The valve head of 61
Conduit in 71
The front of 86
The enamel layer of 96
The spray-hole of 106
The longitudinal direction of a1
Angle between b11
Claims (11)
1. produce the method for the injection valve (1) of explosive motor for one kind, injection valve (1) comprises the valve body (5) with valve head (6), valve head (6) has at least one spray-hole (10) and is designed to be placed in the firing chamber (4) of explosive motor at least partly, or it is at least direct towards described firing chamber, valve head (6) is at least part of region applying coating
Described method at least has following steps:
-make fluid pass valve body (5), fluid is deviate from from valve head (6) by spray-hole (10),
-glaze slip is coated at least part of region of the valve head (6) that fluid flows through,
-drying is coated to the glaze slip of valve head (6),
-heating is coated to the glaze slip of valve head (6) to form enamel layer (9).
2. method according to claim 1,
Wherein
Glaze slip is applied by being impregnated in glaze slip by valve head (6).
3. method according to claim 1 and 2,
Wherein
In oven, drying is coated to the glaze slip of valve head (6).
4. the method according to aforementioned any one claim,
Wherein
Glaze slip is heated in the temperature range of 800 DEG C-900 DEG C.
5. the method according to aforementioned any one claim,
Wherein
Use shielding gas heating glaze slip.
6. the method according to aforementioned any one claim,
Wherein
Enamel layer (9) is formed as the layer thickness of 50 μm-80 μm.
7. the method according to aforementioned any one claim,
Wherein
Glaze slip comprises at least one glass forming oxide in following group:
-silica (SiO
2)
-diboron trioxide (B
2o
3)
-sodium oxide (Na
2o)
-potassium oxide (K
2o)
-aluminium sesquioxide (Al
2o
3)
And at least one component also comprised in following group:
-borax
-feldspar
-quartz
-fluoride
-soda
-sodium nitrate
And if necessary, comprise with at least one opacifiers in group
-titanium (Ti)
-zirconium (Zr)
-molybdenum (Mo).
8. the injection valve of the explosive motor produced particularly by the method described in aforementioned any one claim, comprise the valve body (5) with valve head (6), valve head (6) has at least one spray-hole (10) and is designed to be placed at least partly in the firing chamber (4) of explosive motor, or it is at least direct towards described firing chamber, valve head (6) is at least part of region applying coating
Wherein
Coating is enamel layer (9) or at least comprises enamel.
9. injection valve according to claim 8,
Wherein
Enamel layer (9) is formed by glaze slip, and glaze slip comprises at least one glass forming oxide in following group:
-silica (SiO
2)
-diboron trioxide (B
2o
3)
-sodium oxide (Na
2o)
-potassium oxide (K
2o)
-aluminium sesquioxide (Al
2o
3)
And at least one component also comprised in following group:
-borax
-feldspar
-quartz
-fluoride
-soda
-sodium nitrate
And if necessary, comprise at least one opacifiers in following group
-titanium (Ti)
-zirconium (Zr)
-molybdenum (Mo).
10. injection valve according to claim 8 or claim 9,
Wherein
Enamel layer (9) comprises at least one oxide in following group:
-cobalt oxide
-manganese oxide
-nickel oxide.
11. according to Claim 8 to 10 injection valves wherein described in one,
Wherein
Enamel layer (9) has the conical by its shape formed in spray-hole (10), especially horn shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014210872.1A DE102014210872A1 (en) | 2014-06-06 | 2014-06-06 | Method for producing an injection valve for an internal combustion engine and injection valve for an internal combustion engine |
| DE102014210872.1 | 2014-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105179131A true CN105179131A (en) | 2015-12-23 |
Family
ID=53268661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510309581.1A Pending CN105179131A (en) | 2014-06-06 | 2015-06-08 | Process For Producing An Injection Valve For An Internal Combustion Engine And Injection Valve For An Internal Combustion Engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2952730B1 (en) |
| CN (1) | CN105179131A (en) |
| DE (1) | DE102014210872A1 (en) |
| RU (1) | RU2015121743A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552371A (en) * | 1981-09-21 | 1985-11-12 | Joseph A. Ulicne | Screwless collapsible sled, and methods of constructing and utilizing same |
| US4643359A (en) * | 1985-03-19 | 1987-02-17 | Allied Corporation | Mini injector valve |
| CN1034786A (en) * | 1987-11-16 | 1989-08-16 | 联合信号公司 | Pico fuel injector valve |
| JP2009243352A (en) * | 2008-03-31 | 2009-10-22 | Toyota Central R&D Labs Inc | Internal combustion engine |
| WO2012117702A1 (en) * | 2011-03-02 | 2012-09-07 | リグナイト株式会社 | Composition for heat-insulating material and heat-insulating material |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05242954A (en) * | 1992-02-28 | 1993-09-21 | Mazda Motor Corp | Ignition plug and manufacture thereof |
| DE4222137B4 (en) | 1992-07-06 | 2006-05-04 | Robert Bosch Gmbh | Fuel injector for diesel internal combustion engines |
| JPH10115424A (en) * | 1996-01-31 | 1998-05-06 | Ngk Spark Plug Co Ltd | Spark plug |
| DE19951014A1 (en) | 1999-07-02 | 2001-01-04 | Bosch Gmbh Robert | Fuel injector |
| JP4155259B2 (en) | 2003-11-06 | 2008-09-24 | 三菱電機株式会社 | Method for forming a coating on a fuel injection valve for an internal combustion engine |
| JP2007309167A (en) | 2006-05-17 | 2007-11-29 | Toyota Motor Corp | Combustion chamber purification system for internal combustion engine |
| US20130300278A1 (en) * | 2012-05-11 | 2013-11-14 | Uci/Fram Group | Fouling resistant spark plug |
| DE102013213993A1 (en) | 2013-07-17 | 2015-01-22 | Ford Global Technologies, Llc | Injection valve for an internal combustion engine and method for producing an injection valve |
-
2014
- 2014-06-06 DE DE102014210872.1A patent/DE102014210872A1/en not_active Withdrawn
-
2015
- 2015-05-21 EP EP15168604.5A patent/EP2952730B1/en active Active
- 2015-06-05 RU RU2015121743A patent/RU2015121743A/en not_active Application Discontinuation
- 2015-06-08 CN CN201510309581.1A patent/CN105179131A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552371A (en) * | 1981-09-21 | 1985-11-12 | Joseph A. Ulicne | Screwless collapsible sled, and methods of constructing and utilizing same |
| US4643359A (en) * | 1985-03-19 | 1987-02-17 | Allied Corporation | Mini injector valve |
| CN1034786A (en) * | 1987-11-16 | 1989-08-16 | 联合信号公司 | Pico fuel injector valve |
| JP2009243352A (en) * | 2008-03-31 | 2009-10-22 | Toyota Central R&D Labs Inc | Internal combustion engine |
| WO2012117702A1 (en) * | 2011-03-02 | 2012-09-07 | リグナイト株式会社 | Composition for heat-insulating material and heat-insulating material |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2952730A1 (en) | 2015-12-09 |
| EP2952730B1 (en) | 2018-03-07 |
| DE102014210872A1 (en) | 2015-12-17 |
| RU2015121743A (en) | 2016-12-27 |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
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| WD01 | Invention patent application deemed withdrawn after publication |