EP1165961B1 - Kraftstoffeinspritzventil für eine brennkraftmaschine - Google Patents
Kraftstoffeinspritzventil für eine brennkraftmaschine Download PDFInfo
- Publication number
- EP1165961B1 EP1165961B1 EP00929269A EP00929269A EP1165961B1 EP 1165961 B1 EP1165961 B1 EP 1165961B1 EP 00929269 A EP00929269 A EP 00929269A EP 00929269 A EP00929269 A EP 00929269A EP 1165961 B1 EP1165961 B1 EP 1165961B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- joint face
- face
- injection valve
- fuel injection
- valve according
- 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.)
- Expired - Lifetime
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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
- 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
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
Definitions
- the invention relates to a fuel injection valve according to the preamble of claim 1.
- fuel is overpressurized a fuel injection valve in the combustion chamber of an internal combustion engine injected.
- a fuel injection valve is known from WO 96/19661, where several injector modules are arranged axially one above the other and thus result in several sealing levels and with a union nut are axially biased against each other.
- the one another adjacent faces of two adjacent injector modules are designed so that they are inserted into the injector modules Channels through the surface pressure of the end faces are sealed to each other and to the outside.
- a fuel injector is, for example, in one Common rail fuel injection system used in which the Fuel pressure can exceed 1500 bar.
- the Fuel pressure can exceed 1500 bar.
- the high Fuel pressure requires a high surface pressure and therefore high axial preload forces via the union nut on the end faces of the injector modules.
- the material of the injection valve is heavily stressed, especially those used as pretensioners Union nut, the thread of which is subject to heavy wear.
- high-precision manufacturing is required.
- the object of the invention is high-pressure resistant transitions the injector modules of a fuel injector to provide low material load.
- the object of the invention is characterized by the features of the independent Claim resolved.
- the end faces according to the invention designed as sealing faces two each axially under an axial preload force pressed injector modules are designed that the surface pressure around the channels to be sealed in the Injector modules increased with a given preload is and a possible fuel leak from the in the Injector modules introduced holes and channels over a To drain the return channel, so as to undermine the sealing surfaces with high pressure fuel.
- the sealing surfaces seal those in the injector modules provided high pressure channels against each other and to the outside. This creates recesses in the end faces of the injector modules incorporated so that essentially only the remaining, not recessed areas with the opposite Face and have a sealing surface form.
- the first, non-recessed partial area the can be divided into several sub-areas, with one greater surface pressure than the second, deepened Partial area, resulting in a higher tightness than in a plan, single-surface sealing surface is achieved.
- the possibly through the Sealing surfaces creeping fuel as part of the total Fuel leakage accumulates through the wells the end face formed drainage space between the end faces and flows through a return channel. This will prevents an uncontrolled build up of pressure between flat surfaces due to fuel leakage.
- the openings the high pressure bores and channels point into the sealing surface and the opening of the low pressure bore, in particular of the return channel, points into the drain surface.
- sealing surface Due to the fact that compared to the total front surface of an injector module smaller sealing surface is created by preloading the injector modules against each other a high surface pressure. Thereby can the sealing surface, d. H. the entire non-recessed area, also have a relatively low planicity, leading to contributes to lower manufacturing costs. On a highly accurate, flat design of the sealing surface can thus be dispensed with, because the high surface pressure compensates for the unevenness due to the elastic deformation of the material of the injector module in the area of the sealing surfaces.
- the recessed partial area in the following second partial area or Called drain area, is designed so that the manufacturing process of deepening briefly, the vertical range of manufacture extreme is small and therefore inexpensive to carry out. Helpful is that none of the planicity of the second sub-area high requirements, especially lower requirements than the sealing surface, as it has no sealing function takes over.
- the sealing surface of one end surface will be the first in the following Partial area called.
- the subdivisions of the first called sub-areas Partial areas are arranged in the plane of the first partial area.
- the surface pressure also depends on the ratio the first and the second partial area and thus thereby in adjustable over a wide range.
- the averaged over the total area of the second partial area axial depth h is approximately between 10 and 50 microns, which is advantageous on the one hand, the course of the possible fuel leakage without great flow resistance and surface pressure is essentially limited to the sealing surface and on the other hand only low manufacturing costs due to a limited Material removal for the recessed area arise.
- the sealing surface is through a narrow, closed groove that divides the high pressure holes and channels and the wall of the opening of the return duct cuts so that a possible Fuel leakage flows through the groove into the return duct and prevents the sealing surfaces from infiltrating with fuel becomes.
- the short manufacturing time is advantageous the groove.
- part of the second Partial surface by introducing preferably network-shaped, i.e. arranged parallel and perpendicular to each other Longitudinal and transverse groove grooves in the original face, manufactured. After processing, remain in the second Partial area preferably rectangular or square elevations, that in the plane of the first partial area from the previous figures. Some of the networked The longitudinal and transverse grooves are recessed with the return channel connected, so that a possible fuel leakage can flow through the return channel. By the low material removal is such a particularly fast and cost-effective production possible.
- the recess in the face of an injector module is e.g. by laser ablation or electron beam ablation in very inexpensive to manufacture in a very short time.
- Figure 1 shows an essentially rotationally symmetrical Fuel injection valve, in which several injector modules 1, 5, 6, 7, 8 are arranged axially one above the other and over one central biasing means, designed here as a union nut 10 are axially biased against each other.
- a servo body 5 Starting from the injector head 1 of the fuel injector follows axially a servo body 5, a transmission body 6, an intermediate body 7 and a nozzle body 8, the end faces of the injector modules 1, 5, 6, 7, 8 lie on top of each other in pairs and each form a sealing plane.
- the injector modules 1, 5, 6, 7, 8 also preferably have one central, centrally located high pressure hole 3 depending on their function in the respective injector modules 1, 5, 6, 7, 8 has different diameters and exposed to high fuel pressure that is dependent is from the current functional state of the injection valve.
- the high pressure bore eccentrically arranged.
- An inlet channel runs in the injector modules 1, 5, 6, 7, 8 9, the fuel is arranged on the side of the injector head 1
- Fuel port 11 to a substantially parallel extending to the longitudinal axis of the fuel injector Section of the inlet channel through the different Injector modules 1, 5, 6, 7, 8 to the tip of the nozzle body 8 leads in the injection holes through which Fuel is injected into the combustion chamber of an internal combustion engine becomes.
- a return channel 2 is arranged, through which a possible fuel leakage, i.e. in the Fuel injection valve from sealing surfaces or guide gaps escaping fuel flows back into the tank.
- the return channel 2 the fuel flows without pressure or under one low pressure.
- the injector modules 1, 5, 6, 7, 8 have their respective mutually opposite end faces Sealing surfaces on each other with high preload are pressed and described in more detail in Figures 2 and 3 are.
- the nut 10 causes by screwing axial preloading on the thread of the injector head the injector modules 1, 3, 5, 6, 7, 8 with a preload against each other and so a high surface pressure on their End faces, the surface pressure depending on the preload is.
- the union nut 10 engages on one Heel of the nozzle body 8 and presses the nozzle body 8 axially in the direction of the injector head 1.
- the preload causes a high surface pressure on the End faces of the injector modules, creating the high pressure bore 3 and the inlet channel 9 sealed against each other and to the outside are.
- FIG. 2 shows a top view of an end face 20, 30 Injector module, here the end face was 20,30 of the injector head 1 viewed on the end face of the Servo body 5 is pressed.
- Figure 2a shows the longitudinal section of the injector module of Figure 2a along the line B-B Clarification of Figure 2.
- the cylindrical injector head 1 is in part of its length includes the hollow cylindrical nut 10 and with her connected by a thread.
- the end face 20, 30 of the Injector head 1 open the openings of the central high pressure bore 3, the inlet channel 9, the return channel 2, further Channel 4 and the fixing holes 35.
- the fixing holes 35 are used to align and fix the injector head 1 and the adjacent servo body 5.
- the end face 20, 30 is divided into a first and a second partial area 20, 30, wherein the second partial surface 30 around an axial Depth h is deepened in comparison to the first partial surface 30, what the axial height difference between the first face 20 and the second partial surface 30, which preferably is between 10 ⁇ m and 50 ⁇ m. This is about the bump the second partial area 30 averaged.
- the second Partial surface 30 is thus axially in the direction of servo body 5 arranged lower than the first by the axial depth h Section 20.
- the second partial surface is preferred 30 deepened to such an extent that they have no contact with the adjacent one End face of the servo body 5 has.
- the axial Depth h is preferably in the range between 10 ⁇ m and 50 ⁇ m, whereby on the one hand the first partial surface 20 with the entire Biasing force is applied and the second partial area 30 with the face of the opposite injector module on the other hand, the material volume to be removed has no contact remains short with a correspondingly short processing time.
- the second partial surface 30 at least partially subjected to a slight surface pressure his.
- the first partial surface 20 serves as a sealing surface for sealing the high pressure channels and bores 3, 9 against each other and after outside. Since the second partial surface 30 deepens compared to the is first partial area 20, it forms with the one lying above it End face of the servo body 5, an outlet space through which a possible fuel leakage, d. H. the Fuel flow, which among other things through the sealing surfaces to the outside penetrates to the return duct 9 flows.
- the second partial area 30 thus serves as a drainage surface.
- the first partial surface 20 is essentially planar. Due to the 20, 30 smaller in comparison to the entire end face first partial surface 20 acts with a predetermined axial Preload force on them resulting in a higher surface pressure the material of the injector module in the area of the first Partial surface 20 is compressed more elastically. Therefore the unevenness of the first partial surface 20 may be less than with a sealing surface that consists of the entire end surface 20, 30 exists.
- the surface of the second partial surface 30 is not used for sealing and can therefore have any bumps as long as it does not protrude above the plane of the first partial surface 20.
- the second partial surface 30 is preferably not with the Face of the opposite injector module 5 in contact is. The flows between the second partial surface 30 the drainage surface and the front surface of the opposite Injector module possibly occurring fuel leakage to the Return channel 2. From every point of the second partial area 30 a connection to the return channel 2 is provided, whereby undermining of the sealing surfaces is avoided.
- the second partial surface 30 preferably has a higher unevenness on its surface as the first partial surface 20, which enables rapid processing of the recess to produce the second partial surface 30 is possible.
- the openings of the high pressure bore 3 and the inlet channel 9 are arranged in the first partial area 21 and 22 respectively.
- the opening of the return duct 2 is in the second partial surface 30 arranged and is thus connected to the drain room.
- the injector module 1 here as an example Injector head 1 shown, another channel 4 laterally and arranged essentially parallel to the central high-pressure bore 3, the outside through a third sealing surface 24 is sealed, which is a further lower part surface of the first Sub-area 20 represents.
- the opening of the further channel 4 is arranged and points a third ring width b3.
- the further channel 4 are z. B. introduced electrical control lines or measuring lines, the over the third sealing surface 24 against the Fuel sealed in the drain chamber and against environmental influences is protected.
- the fourth sealing surface 25 seals the drain space in the area the drain surface 30 (the second partial surface 30) to the outside down.
- the first, the second, the third is preferably and the fourth ring width b1, b2, b3, b4 at least 1 mm, which creates a stable and durable seal despite the high Material load on the material below the sealing surfaces 21, 22, 24, 25 is guaranteed.
- high pressure bore 3 and in the inlet channel 9 depending on the functional state high pressure of the fuel injector, which can be over 1500 bar.
- high pressure of the fuel injector which can be over 1500 bar.
- the return channel 2 flows the fuel leakage.
- the return channel 2 is depressurized or has a low fuel pressure.
- first, second and third sealing surfaces 21, 22, 24 and the inner edge of the fourth sealing surface 25 in other embodiments not circular, but e.g. oval, polygonal, etc. and are not on limited a circular embodiment.
- the first and the second sealing surfaces go directly or over a transition surface 23 into each other, whereby the Manufacturing simplified.
- drain surface 30 and the return channel 2 can drain advantageous to infiltrate the sealing surface with fuel and avoided an uncontrolled build-up of pressure between them, which increases the high pressure resistance and the service life becomes.
- FIG 3 is another embodiment of the end face 20, 30 shown.
- 30 2 is the first partial surface 20 through the second Partial surface 30 into a first and a second lower partial surface 26, 27 divided, the second partial surface 30 as a circumferential, closed groove 31 formed in the first partial surface 20 is.
- the groove 31 encloses the openings of the High pressure bore 3 and the inlet channel 9, the distance between the wall of the groove 31 and the high pressure bore 3 or the inlet channel 9 is a minimum distance, preferably more than 1 mm to ensure high pressure resistance.
- the opening of the return channel 2 is in the first Lower part surface 26 arranged, the openings of the high pressure bore 3 and the inlet channel 9 are in the second lower part surface 27 arranged.
- the opening of the return channel 2 cuts, at least partially, the wall of the groove 31, see above that the fuel leakage mentioned in the previous embodiment from the high pressure bore 3 and the inlet channel 9 can run through the groove 31 in the return channel 2, and thus undermining the first lower part surface 26 Fuel is avoided.
- the preferably narrow groove 31 in the first partial surface 20 advantageously allows inexpensive production.
- the groove 31 opens at both of them Ends in the return channel 2, creating the length of the groove 31 is less and thus the manufacturing time is reduced.
- the opening of the further channel 4 is in the first lower part surface 26 arranged, which is free of fuel, which in the groove 31 is derived.
- the preload is preferably by means of a union nut or by welding the injector modules under pre-tension manufactured, but can also be made using other joining techniques respectively.
- the other of the two faces faces no wells, d. H. consists only of a single-surface, single-surface area lying in one plane. Thereby the manufacturing step of deepening is unnecessary.
- the machining time for gutting the material for the second partial surface 30 from the end surface of an injector module shortens disproportionately depending on one smaller axial depth h, especially for laser or Electron-removing material.
- In one embodiment therefore have both contacting end faces 20, 30 each a second partial surface 30, which is a mirror image of one another are arranged and overlap.
- the respective axial depth h less, preferably to half halved, which reduces the processing time.
- FIG. 4 shows an embodiment of the second partial surface 30 shown schematically from the top in FIG.
- a part of the second partial surface 30 is preferred by introducing arranged in a network, i.e. parallel and vertical mutually arranged longitudinal and transverse groove grooves 36, 37 in the original end face 20 made.
- After editing preferably remain in the second partial area 30 rectangular or square elevations 38 which in the Level of the first partial surface 20 from the previous figures lies.
- Some of the recesses of the Longitudinal and transverse grooves 36, 37 are connected to the return channel 2, so that a possible fuel leak over them can flow through the return channel 2.
- the longitudinal and transverse grooves are in further embodiments 36, 37 curvy, for example in concentric circular Grooves around the return channel 2, starting from the radial grooves are arranged outwards, the circular grooves to cut.
- any other embodiments of the longitudinal and transverse grooves 36, 37 are conceivable. Every point is on the sealing surfaces 21, 22, 24, 25 of the previous figures adjacent second partial surface 30 is, for example, longitudinal and / or Cross grooves 36, 37, circular and / or radial grooves connected to the return channel 2, so that a possible Fuel leakage can flow through the return channel 2.
- Elevations 38 which are in the plane of the first partial surface 20 are arranged and in contact with the end face of her opposite injector module.
- the surface pressure is dependent on at a given axial preload the remaining surface of the elevations 38 and thus adjustable.
- exemplary longitudinal and transverse grooves 36, 37 By forming exemplary longitudinal and transverse grooves 36, 37, the volume of material to be removed is reduced compared to completely removing the second partial surface 30, as a result of which particularly rapid and cost-effective machining is achieved.
- the recess is preferably made in the material of the injector module for the second partial surface 30 by means of laser, milling or electron beam methods.
- the deviation of the module angle from 180 ° depends from the positions of the centroids of the respective lower part surfaces to each other and the one assigned to them Surface areas.
- a design-related, unfavorable Distribution of the lower part surfaces 21, 22, 25 over the end face is at least one compensation surface in the plane of the first Partial surface 20 is provided, which causes the deviation of the module angle of 180 ° depending on the area center and the Area of the compensation area and so negligible small value, preferably adjustable to 0 °.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- eine ringförmige vierte Dichtfläche, deren äußerer Rand an die Mantelfläche des entsprechenden Injektormoduls anschließt und deren innerer Rand an die zweite vertiefte Teilfläche anschließt. Dadurch wird vorteilhaft die über die Ablauffläche fließende Kraftstoffleckage nach außen hin abgedichtet, und
- eine erste und eine zweite Dichtfläche, in deren Zentren die Öffnungen der in den Injektor eingebrachten Hochdruckbohrungen und -kanäle angeordnet sind.
- Figur 1
- einen Längsschnitt durch ein Kraftstoffeinspritzventil mit mehreren Injektormodulen
- Figur 2
- einen Querschnitt durch das Kraftstoffeinspritzventil aus Figur 1 entlang der Linie A-A,
- Figur 2a
- einen Längsschnitt durch ein Injektormodul aus Figur 2 entlang der Linie B-B,
- Figur 3
- ein weiteres Ausführungsbeispiel einer Stirnfläche eines Injektormoduls
- Figur 4
- ein Ausführungsbeispiel der zweiten Teilfläche aus Figur 2
- eine ringförmige erste Dichtfläche 21, in deren Zentrum die Öffnung der Hochdruckbohrung 3 angeordnet ist und die eine erste Ringbreite b1 aufweist,
- eine ringförmige zweite Dichtfläche 22, in deren Zentrum die Öffnung des Zulaufkanals 9 angeordnet ist und die eine zweite Ringbreite b2 aufweist,
- eine ringförmige vierte Dichtfläche 25, deren äußerer Rand an die Mantelfläche des Injektorkopfes 1 anschließt und die eine vierte Ringbreite b4 aufweist.
Vorzugsweise wird die Ausnehmung in das Material des Injektormoduls für die zweite Teilfläche 30 mittels Laser-, Fräsoder Elektronenstrahlverfahren eingebracht.
Claims (14)
- Kraftstoffeinspritzventil mit Injektormodulen (1,5,6,7,8),in die jeweils eine Hochdruckbohrung (3) und ein Zulaufkanal (9) eingebracht sind,die axial übereinander angeordnet und mit Vorspannmitteln (10) axial vorgespannt sind, so daß die beiden sich berührenden Stirnflächen zweier jeweils aufeinanderliegender Injektormodule (1,5,6,7,8) durch eine hohe Flächenpressung Dichtflächen bilden, wobei mindestens eine Stirnfläche (20,30) unterteilt ist in eine erste und eine zweite Teilfläche (20,30), wobei die zweite Teilfläche (30) zur ersten Teilfläche (20) in Richtung des die Stirnfläche (20,30) aufweisenden Injektormoduls (1,5,6,7,8) um eine axiale Tiefe (h) vertieft ist unddurch das Vorspannnen der Injektormodule (1,5,6,7,1) die erste Teilfläche (20) mit einer größeren Flächenpressung beaufschlagt ist als die zweite Teilfläche (30), dadurch gekennzeichnet, daßdie zweite Teilfläche (30) mit einem Rücklaufkanal verbunden ist, der in das Injektormodul (1,5,6,7,8) eingebracht ist,die erste Teilfläche (20) als Dichtfläche und die zweite Teilfläche (30) als Ablauffläche zum Abführen einer eventuellen Kraftstoffleckage durch den Rücklaufkanal (2) dient.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdie erste Teilfläche (20) plan ausgeführt ist.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdie zweite Teilfläche (30) eine beliebige Unebenheit aufweist.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdie Öffnungen der Hochdruckbohrung (3) und des Zulaufkanais (9) in der ersten Teilfläche (20) angeordnet sind.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdie Öffnung des Rücklaufkanals (2) in der zweiten Teilfläche (30) angeordnet ist.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
die erste Teilfläche (20) in folgende Unterteilflächen (21,22,25) unterteilt ist, die in der Ebene der ersten Teilfläche liegen:eine ringförmige erste Dichtfläche (21), in deren Zentrum die Öffnung der Hochdruckbohrung (3) angeordnet ist, mit einer ersten Ringbreite (b1)eine ringförmige zweite Dichtfläche (22), in deren Zentrum die Öffnung des Zulaufkanals (9) angeordnet ist, mit einer zweiten Ringbreite (b2),eine ringförmige vierte Dichtfläche (25), deren äußerer Rand an die Mantelfläche des Injektormoduls (1,5,6,7,8) anschließt, mit einer vierten Ringbreite (b4). - Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdie erste Teilfläche (20) als weitere Unterteilfläche (24) eine dritte Dichtfläche (24) aufweist, in deren Zentrum die Öffnung eines weiteren Kanals (4) angeordnet ist, mit einer dritten Ringbreite (b3).
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßdie erste, die zweite, die dritte und die vierte Ringbreite (b1,b2,b3,b4) jeweils eine Breite von mindestens 1 mm haben.
- Kraftstoffeinspritzventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daßdie erste Teilfläche (20) durch die zweite Teilfläche (30) in eine erste und eine zweite Unterteilfläche (26,27) unterteilt ist, wobei die zweite Teilfläche (30) vorzugsweise als umlaufende, geschlossene Nut (31) in der ersten Teilfläche (20) ausgebildet ist, die die Öffnungen der Hochdruckbohrung (3) und des Zulaufkanals (9) einschließt,die Öffnung des Rücklaufkanals (2) in der ersten Unterteilfläche (26) angeordnet sind,die Öffnungen der Hochdruckbohrung (3) und des Zulaufkanals (9) in der zweiten Unterteilfläche (27) angeordnet ist,daß die Öffnung des Rücklaufkanals (2) zumindest teilweise die Wandung der Nut (31) anschneidet, so daß eine eventuelle Kraftstoffleckage über die Nut (31) in den Rücklaufkanal (2) ablaufen kann.
- Kraftstoffeinspritzventil nach Anspruch 9, dadurch gekennzeichnet, daßdie Öffnung eines weiteren Kanals (4) in der ersten Unterteilfläche (26) angeordnet ist.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßeine der beiden sich berührenden Stirnflächen (20,30) zweier jeweils aufeinanderliegender Injektormodule (1,5,6,7,8) nur als eine in einer Ebene liegende einflächige Fläche ausgeformt ist.
- Kraftstoffeinspritzventil nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daßbeide der beiden sich berührenden Stirnflächen (20,30) zweier jeweils aufeinanderliegender Injektormodule (1,5,6,7,8) jeweils eine zweite Teilfläche (30) aufweisen, die sich spiegelbildlich überdecken.
- Kraftstoffeinspritzventil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daßder axiale Höhenunterschied, axiale. Tiefe (h), genannt, zwischen der ersten Teilfläche (20) und der zweiten Teilfläche (30) zwischen 10 µm und 50 µm liegt.
- Kraftstoffeinspritzventil nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, daßder Winkel zwischen den Längsachsen zweier jeweils aneinandergrenzender Injektormodule der Modulwinkel ist,bei ungünstiger Verteilung der Unterteilflächen (21,22,25) auf der Stirnfläche mindestens eine Ausgleichsfläche in der Ebene der ersten Teilfläche (20) vorgesehen ist, so daß die Abweichung des Modulwinkels von 180° abhängig von dem Flächenschwerpunkt und dem Flächeninhalt der Ausgleichsfläche und so auf einen vernachlässigbar kleinen Wert, vorzugsweise auf 0° einstellbar ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914720 | 1999-03-31 | ||
DE19914720A DE19914720B4 (de) | 1999-03-31 | 1999-03-31 | Kraftstoffeinspritzventil für eine Brennkraftmaschine |
PCT/DE2000/000969 WO2000060233A1 (de) | 1999-03-31 | 2000-03-30 | Kraftstoffeinspritzventil für eine brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1165961A1 EP1165961A1 (de) | 2002-01-02 |
EP1165961B1 true EP1165961B1 (de) | 2002-09-04 |
Family
ID=7903155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00929269A Expired - Lifetime EP1165961B1 (de) | 1999-03-31 | 2000-03-30 | Kraftstoffeinspritzventil für eine brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1165961B1 (de) |
DE (2) | DE19914720B4 (de) |
WO (1) | WO2000060233A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7464882B2 (en) | 2005-01-31 | 2008-12-16 | Denso Corporation | Fluid injection valve |
DE102008043417A1 (de) | 2007-11-21 | 2009-05-28 | Denso Corp., Kariya-shi | Kraftstoffeinspritzventil |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10105368A1 (de) | 2001-02-06 | 2002-08-29 | Siemens Ag | Kraftstoffeinspritzdüse für eine Brennkraftmaschine |
JP3928362B2 (ja) * | 2001-02-14 | 2007-06-13 | 株式会社デンソー | 流体移送装置のシール面圧向上構造 |
DE10121531A1 (de) | 2001-05-03 | 2002-11-14 | Siemens Ag | Kraftstoffinjektor |
DE10213380B4 (de) * | 2001-09-04 | 2010-08-12 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für eine Brennkraftmaschine |
EP1293664A3 (de) * | 2001-09-18 | 2004-03-10 | Siemens Aktiengesellschaft | Kraftstoffeinspritzventil für eine Brennkraftmaschine |
WO2003038274A1 (fr) * | 2001-11-02 | 2003-05-08 | Bosch Automotive Systems Corporation | Structure d'etancheite de passage de combustible d'une buse d'injection de combustible |
DE10202722A1 (de) | 2002-01-24 | 2003-11-27 | Siemens Ag | Düsenspannmutter für Einspritzventil sowie Verfahren zur Herstellung der Düsenspannmutter |
DE10207227A1 (de) * | 2002-02-21 | 2003-09-04 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE10209116A1 (de) * | 2002-03-01 | 2003-09-18 | Bosch Gmbh Robert | Verfahren zur Herstellung eines Kraftstoffeinspritzventils |
DE10215980B4 (de) | 2002-04-11 | 2008-03-27 | Siemens Ag | Leckageanschluss für einen Kraftstoffinjektor |
DE10258980B4 (de) * | 2002-12-16 | 2006-04-20 | L'orange Gmbh | Vorrichtung mit zwischen zwei Körpern liegender Dichtebene |
DE10310123A1 (de) | 2003-03-07 | 2004-09-23 | Siemens Ag | Radialkolbenpumpe |
DE102004032201B3 (de) * | 2004-07-02 | 2005-12-22 | Siemens Ag | Verfahren zur Bearbeitung von hochdruckfesten Dichtflächen an zwei metallischen Körpern |
JP2006183471A (ja) * | 2004-12-24 | 2006-07-13 | Denso Corp | インジェクタ |
DE102007009166A1 (de) * | 2007-02-26 | 2008-08-28 | Robert Bosch Gmbh | Flächenfreilegung an Kraftstoffinjektoren |
US20120180761A1 (en) * | 2009-09-17 | 2012-07-19 | International Engine Intellectual Property Company | High-pressure unit fuel injector |
JP5375762B2 (ja) | 2010-07-14 | 2013-12-25 | 株式会社デンソー | 燃料噴射装置 |
DE102011008468A1 (de) | 2011-01-13 | 2012-07-19 | Continental Automotive Gmbh | Kraftstoffinjektor und Verfahren zum Herstellen eines Kraftstoffinjektors |
GB2549094A (en) * | 2016-04-04 | 2017-10-11 | Delphi Int Operations Luxembourg Sarl | Fuel injector |
DE102020102194A1 (de) * | 2020-01-30 | 2021-08-05 | Man Energy Solutions Se | Kraftstoffeinspritzventil |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9425652D0 (en) * | 1994-12-20 | 1995-02-22 | Lucas Ind Plc | Fuel injection nozzle |
JP3849067B2 (ja) * | 1995-03-30 | 2006-11-22 | ボッシュ株式会社 | 燃料噴射ポンプ |
DE19608575B4 (de) * | 1996-03-06 | 2005-10-20 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE19614980C1 (de) * | 1996-04-16 | 1997-09-18 | Hatz Motoren | Einspritzvorrichtung |
DE19827628A1 (de) * | 1998-06-20 | 1999-12-23 | Daimler Chrysler Ag | Kraftstoffeinspritzventil für Brennkraftmaschinen |
-
1999
- 1999-03-31 DE DE19914720A patent/DE19914720B4/de not_active Expired - Fee Related
-
2000
- 2000-03-30 WO PCT/DE2000/000969 patent/WO2000060233A1/de active IP Right Grant
- 2000-03-30 DE DE50000457T patent/DE50000457D1/de not_active Expired - Lifetime
- 2000-03-30 EP EP00929269A patent/EP1165961B1/de not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7464882B2 (en) | 2005-01-31 | 2008-12-16 | Denso Corporation | Fluid injection valve |
DE102008043417A1 (de) | 2007-11-21 | 2009-05-28 | Denso Corp., Kariya-shi | Kraftstoffeinspritzventil |
DE102008043417B4 (de) | 2007-11-21 | 2022-05-19 | Denso Corporation | Kraftstoffeinspritzventil |
Also Published As
Publication number | Publication date |
---|---|
DE50000457D1 (de) | 2002-10-10 |
DE19914720B4 (de) | 2005-10-13 |
EP1165961A1 (de) | 2002-01-02 |
WO2000060233A1 (de) | 2000-10-12 |
DE19914720A1 (de) | 2000-11-02 |
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