EP0680560B1 - Elektromagnetisch betätigbares kraftstoffeinspritzventil - Google Patents

Elektromagnetisch betätigbares kraftstoffeinspritzventil Download PDF

Info

Publication number
EP0680560B1
EP0680560B1 EP95900639A EP95900639A EP0680560B1 EP 0680560 B1 EP0680560 B1 EP 0680560B1 EP 95900639 A EP95900639 A EP 95900639A EP 95900639 A EP95900639 A EP 95900639A EP 0680560 B1 EP0680560 B1 EP 0680560B1
Authority
EP
European Patent Office
Prior art keywords
oscillation
fuel
fuel injection
injection valve
diaphragms
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
Application number
EP95900639A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0680560A1 (de
Inventor
Hans Kubach
Guenter Dantes
Karlheinz Schultheiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0680560A1 publication Critical patent/EP0680560A1/de
Application granted granted Critical
Publication of EP0680560B1 publication Critical patent/EP0680560B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0692—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by a fluid
    • 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
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/047—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves being formed by deformable nozzle parts, e.g. flexible plates or discs with fuel discharge orifices
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/041—Injectors peculiar thereto having vibrating means for atomizing the fuel, e.g. with sonic or ultrasonic vibrations

Definitions

  • the invention is based on an electromagnetically actuated Fuel injection valve according to the generic term of claim 1.
  • the preparation is for engines with internal combustion the fuel (petrol, but especially methanol) with the injection of very fine drops targeted flight direction at not too high speed important. This will result in all operating points a well ignitable and burning as desired Fuel air mixture generated.
  • An injection nozzle is already known from WO-A-90/03512, the to operate a nozzle needle and thus to open and Close the injector a piezoelectric Has drive device.
  • a piezoelectric Has drive device In addition there is a second Drive device provided, the piezoelectric, works magnetostrictively or electromagnetically. Both Drive devices are so with an electrical Input variable supplied. With the second drive device generates a stroke movement of an outer nozzle part, whereby in open state of the injector a superimposed alternating Stroke movement is present. There is a period for the Change of stroke movement available, which is several times smaller than the specified minimum opening time of the injection nozzle.
  • a liquid atomizer is known from SU-A-825 176, the consists of a double pipe and a nozzle, with between a liquid film in the two nested pipes is located and a compressed gas is supplied in the inner tube becomes.
  • a membrane is provided on the nozzle, which passes through the gas pneumatically excited to vibrate. Because of the Compressed air generated oscillation of the membrane is the emerging Torn liquid into small droplets. To swing the Reaching the membrane is auxiliary energy in the form of compressed air needed; the membrane does not become by the liquid alone stimulated to vibrate.
  • the invention is accordingly based on the object finest drops at low speed to achieve, with a high efficiency of Implementation of the pressure energy contained in the fuel into the surface energy inversely proportional to the diameter of the fuel emerging from the valve results.
  • This allows further energy sources, for example compressed air can be dispensed with, also an attachment to existing electromagnetic actuable injection valves should be possible.
  • the invention solves this problem with the features of claim 1 and has the advantage that a particularly good efficiency in energy conversion the pressure energy of the fuel (e.g. 3 bar) into the surface energy inversely proportional to the diameter results. It can be on other energy sources that occasionally for the finest droplet formation are used, are dispensed with, so that also their costs, unreliability and installation problems omitted.
  • the invention uses instead this auxiliary foreign energy which is practically the same Order of magnitude of pressure energy available anyway, which the supplied fuel has and which, for example, to prevent steam bubbles anyway in a given size is required.
  • the invention thus enables a large surface area of fuel at the exit, the rapid spatial Distribution of fuel to prevent Drop recombination as well as by high frequency (> 20 kHz) Change in the direction of radiation of the fuel a desired turbulence in the fuel before entering the air.
  • the invention enables vibrating behavior of escaping fuel lamellae is in a frequency range that is high-frequency by orders of magnitude (namely> 20 kHz) the vibration behavior of 2 kHz, for example Injector components, which is in a known manner, for example at K-Jetronic, to give a concrete example here. There are therefore no references to the present invention.
  • the invention succeeds in exploiting a spring-elastic behavior of intentionally intended Valve components in the metering cross-sectional area spring-elastic lossless system create which with targeted vibration regeneration high vibrational energies of the lamellar Fuel compared to the excitation, a basic energy conversion when pulling apart of the slats and the side speed in principle fully in terms of surface energy is implemented. There is therefore one effective atomization with the smallest possible Droplet size with small dead volume, good preparation especially at the beginning of the valve opening full pressure during the opening process and a good linearity.
  • the basic idea of the present invention is to form a downstream to the valve seat of an electromagnetic actuatable injection valve located Metering gap area at least one, preferably two structures, structures, membranes or Provide plates that have opposite vibration behavior (Same phase - opposite phase) and a leaking fuel jet or a fuel lamella modulate in the broadest sense, according to spray angle, Exit behavior, vibration amplitude, Pulse.
  • Fig. 1 shows one at the bottom of the fuel injection valve arranged (circumferential) ring structure 40, the 1 in the drawing plane of FIG Pressure chamber 41 adjoins and in this sense upwards forms a groove 42 running around the outside in the form of a groove, those of conically tapering opposite ones Side surfaces 43a, 43b forming bilateral Shoulders 44a, 44b in a uniformly curved groove 45 passes from a semicircular shape, for example and is divided by an approximately central one Intermediate web 46, which is spaced apart over its circumference interrupted by perforations or recesses is.
  • These recesses in the middle bridge stand over at least one inner channel or one Tube 1 with a pressure chamber 41 in connection and there the openings in the intermediate web 46 after both Sides are open, there are a total of 3 vibration rooms, 2 and 4 formed, as shown in FIG. 1.
  • the swing rooms 3 and 4 are with vibrating membranes or Plates 11, 12 connected, which also consist of one in the 1 shown in section material sheet shape be produced by a punching or drawing process can.
  • the membranes 11 and 12 are at their edges where they are with opposite elements which will be discussed shortly, exit ring column 5, 6 form, running flat against the horizontal trained and can be slightly bent up in the end area run. On the inside they change into cylindrical ones Membrane sections 17 'to form angled, serving as stiffeners 16 and bridge with a thin membrane spacer 17 die mentioned recesses or slots as vibration chamber 2 in the middle bar 46 that supports them.
  • Such an arrangement consisting of the compressible Rooms 3 and 4 (the compressibility is given here due to the elasticity of the membranes 11 and 12) and the moving masses of fuel in the slots 2 and the outlet constrictions 5 and 6 (the moving Mass in vibration rooms 3 and 4 is negligible, because the speed is very low there) forms an acoustic sound space, in case of resonance the fuel between the vibration chambers 3 and 4 flows back and forth through the middle slots 2.
  • the inflow opening 1 is in the pressure-neutral area and is also relatively long, so that the vibration energy W ⁇ cannot enter the pressure chamber 41.
  • the phasor diagram in FIG. 4 shows the phase relationship of the alternating quantities in FIG. 3. Pressure p is in phase with the membrane system M, as long as the natural resonance of the membrane is not exceeded (p is in the opposite phase via resonance).
  • the flow Q M ⁇ dM / dt pumped by the membrane leads M by 90 °.
  • Q E ⁇ E follows lossless pressure p by 90 ° because of the determining mass; in the case of losses, the angle is somewhat smaller.
  • Opening area A is opposite to M by 180 °.
  • the outflow rate ⁇ A follows p at a lower nozzle height (and less determination by its mass) p somewhat less than ⁇ E , so that ⁇ ⁇ A , A> 90 ° is reliably guaranteed.
  • Q A -Q E -Q M is within ⁇ ⁇ A , A as desired.
  • the metering gap between the guide piece and the membrane (in particular through the angle between the bottlenecks of the flow) is the redirection of the outer fuel lamella 14 larger, so that after the collision of the slats in the impact area 10 one to the outside, that is from imaginary center of the ring shape seen away and in the drawing plane of Fig. 1 to the right current flight direction of the resulting slats remains.
  • the fuel symmetrical to the inflow axis with a smaller angle of incidence compared to the angle of incidence reflected and finely atomized.
  • the two membranes vibrate in opposite phase, the two lamellae are rotated inwards or outwards in the same sense, so that the impact region 10 is pivoted inwards or outwards.
  • the pulse of both slats also varies with ⁇ A.
  • H max ⁇ . / maxR.
  • the stiffening by the cylindrical membrane sections 17 'in the transition to curvature 16 is used in order to stably bridge the slots 2 with the thinner central membrane section 17.
  • the pressure in vibration rooms 3 and 4 is level Membranes due to bending stress ⁇ (they are then physical Plates) applied. Proportional to the slope the membrane against the plane in the sense of overpressure arise from the pressure in the membranes radial and tangential tensile stresses that affect the location the membrane and the natural frequency even without bending strength define (physically have membranes no flexural strength). This natural frequency of the In contrast to the plates, membranes are pressure-dependent. This can be used to get higher errors Pressure the natural frequencies of the membrane and to detune the hydraulic spring-mass system that the vibration amplitude is reduced for protection the membrane from overload. Membrane plates, the tensile and superimpose bending stress of approximately the same size, are particularly cheap and shown in Fig. 1.
  • FIGS. 6 and 7 Another embodiment is shown in FIGS. 6 and 7 shown.
  • the vibratable membranes 11 'and 12' on the outside arranged.
  • the total groove is wider and from both sides up to paragraphs 44a ', 44b' (one-piece)
  • Spring elements 7, 7 'of the membranes 11', 12 'covered are.
  • the membranes 11 'and 12' with their preferably one-piece lateral extensions in the form of spring elements or membranes 7, 7 'fastened via the intermediate webs 33a, 33b, that fuel from the vibration rooms 3 and 4 coupled to vibration chambers 34, 35 located further outside is.
  • the membranes 11 ', 12' open under static pressure. For energetic reasons they have to self-excite but close at operating frequency at pressure, i.e. they must be above the natural resonance at 180 ° Phase shift of the membrane system to pressure operated become, i.e. the membrane has the vibration characteristic a crowd.
  • the fuel in the coupling area the coupling slots 2 ' also have a mass characteristic with regard to the pressure in the vibrating rooms 3 and 4.
  • the spring elements 7, 7 ' are constructed separately for recording the volume flows of the membranes and the coupling area.
  • the lowest natural frequency is that at which fuel Via coupling slots 33, 2 'from the vibration chamber 34 to oscillating chamber 35 and oscillated back.
  • the frequency in which the oscillation of the membrane 11 ' only to vibration chamber 34 and in phase from membrane 12 ' oscillates to the vibration chamber 35, is higher and will with the proper resonance of the membranes and not excited by lower hydraulic excitation.
  • the fuel can be properly trained of the cone-shaped located between the membranes curved leading guide piece 8 'merged at the impact point 10 in the opposite phase be, preserving the momentum too a modulation of the fuel jet or the emerging 5 leads.
  • a particularly large modulation angle possible because compared to Fig. 1, the slats up to the point of impact 10 led and less disturbed by turbulence and because the angle of incidence before impact point 10 can be chosen larger because the impulse against the Outflow side in the event of a collision from the two-sided the tapered wings of the Leit Sharings 8 'can be added.
  • FIG. 8. 8 is the recesses for the arrangement the vibrating membranes and the vibrating spaces Ring body 40 'as the lower part, but if necessary also only as a lower approach to existing fuel injection valves approximately semi-circular extending area that does not form the oscillating spaces separated by intermediate webs, but to the fuel supply channels 1, evenly distributed in the circumference can be open in the form of a bore, wherein the two ensuring the alternating vibration behavior Membranes 11 ", 12" each start from approaches 44a ", 44b" on both sides in the groove 42 " are attached.
  • the two membranes run almost horizontally towards each other, the one in which 8 left vibrating membrane 11 ", as shown in the drawing, initially in very flat
  • the angle runs outwards and then downwards is bent in the direction of the other membrane 12 ", while the opposite membrane 12 "also rises outward at a flat angle and then concave fluted so curved inwards, that their end region with the formation of a narrow outlet (ring) metering gap flush for the fuel directed to the front edge of the vibration membrane 11 " is.
  • the function is such that with a positive instantaneous value of the pressure vibration in the vibration chambers 2, 3 and 4, the membrane 12 "closes the metering gap 5 '(statically and dynamically in phase), the membrane 11" additionally closing the metering gap 5' against the pressure (static and dynamic in opposite phase: frequency is above the natural resonance, mass characteristic).
  • the energy condition for self-excitation is thus fulfilled - the oscillation of the opening A (FIG. 4) and the speed oscillation are in the opposite phase.
  • the spring energies are converted into kinetic energy of the fuel and the membranes in the next quarter period of the oscillation, in such a way that the kinetic energy of the fuel in the pressure chambers or chamber subareas 2, 3 and 4 comes more from the spring energy of the membrane 12 ", while the kinetic energy the membrane 11 "comes mainly from its own spring energy. Then the pressure in the pressure chamber 2 (and thus also approximately the exit velocity ⁇ A ) has the phase position desired for the metering gap 5 '(P min ⁇ ⁇ amine ; valve open).
  • FIG. 9 corresponds in its structure in approximately the embodiment of FIG. 8 with the same Basic shape of the supporting ring body 40 ', wherein the outward at a flat angle to the horizontal extending membranes 11 "'and 12"' in the area of the metering ring gap formed by its ends have such axial and radial distances, that the outlet plate 19 of the fuel in Fig. 9 has specified angle. Vibrate the membranes, this creates an angle modulation accordingly the course of the diagram of FIG. 5.
  • FIGS. 10 and 11 show approximately one corresponding to the representation of Figures 6 and 7 Embodiment, so that the same reference numerals have been retained.
  • the central guide 8 "- of essentially the same shape as in Figures 6 and 7 - the closing body at the same time of the electromagnetically actuated injection valve forms - in other words the valve seat is formed by the inner edge edge surfaces of the vibrating membrane 11 ', 12'; the guide piece in the valve body forming intermediate part is preferred immediately integrally as part of the armature 22 of the magnetic circuit formed, which is associated with the solenoid 25.
  • the magnetic circuit is completed by guide pieces 23, 24, the armature / guide piece 22, 8 "radial and is axially guided by a resilient part or also ring part 26, which is clamped at 26a is and is designed so that in the de-energized state the coil 25 the armature 22 with guide piece 8 "against Membrane 11 ', 12' is pressed, causing the system closed is.
  • the fuel chambers or vibration chambers 3, 4 are about those already mentioned above corresponding supply lines or transverse openings 2 ', now in the armature 22, also in the form of a ring interconnected so that the membranes 11 ', 12' (as usual) can swing in push-pull.
  • the invention enables the desired fine preparation with the finest droplet formation at a limited droplet outlet speed, the deflection of the fuel lamella, which is specified specifically in the embodiments of FIGS. 1 and 6, working with an energetically highly effective constant of the impulses in the event of a collision.
  • the impulses are modulated in an energetically favorable manner in that the spring elasticity of the membranes, together with the fuel mass, results in a spring elastic, principally lossless system. Only such loss-free or low-loss systems with targeted vibration regeneration can result in high vibration energies compared to the excitation.
  • the basic energy conversion takes place only when the lamella is pulled apart in accordance with FIG. 5, the lateral speed being converted accordingly into surface energy.
  • the lateral speed can be fully converted into surface energy, the angle ⁇ max then no longer increasing.
  • This case cannot be achieved in air, because the air resistance of a liquid lamella flying against the air with the broad side according to the features of the invention is at least by the length of the broad side, divided by the lamella thickness, greater than the resistance of a conventional one with the narrow side against the Air-flying lamella (this resistance is conventionally responsible for the drop decay).
  • the relative fuel / air speed is higher than usual because the air is not entrained by the conventionally flying vane.
  • the face with the high dynamic pressure is larger than conventional, where only the frictional forces work. This means that atomization is also good at ⁇ ⁇ ⁇ max .
  • the fuel is braked so effectively that it can be carried along by the air flowing past before it reaches the wall, where the desired treatment is no longer of any use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP95900639A 1993-11-24 1994-11-18 Elektromagnetisch betätigbares kraftstoffeinspritzventil Expired - Lifetime EP0680560B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4340016A DE4340016A1 (de) 1993-11-24 1993-11-24 Elektromagnetisch betätigbares Kraftstoffeinspritzventil
DE4340016 1993-11-24
PCT/DE1994/001359 WO1995014858A1 (de) 1993-11-24 1994-11-18 Elektromagnetisch betätigbares kraftstoffeinspritzventil

Publications (2)

Publication Number Publication Date
EP0680560A1 EP0680560A1 (de) 1995-11-08
EP0680560B1 true EP0680560B1 (de) 1999-02-17

Family

ID=6503312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95900639A Expired - Lifetime EP0680560B1 (de) 1993-11-24 1994-11-18 Elektromagnetisch betätigbares kraftstoffeinspritzventil

Country Status (5)

Country Link
US (1) US5685494A (ja)
EP (1) EP0680560B1 (ja)
JP (1) JPH08507582A (ja)
DE (2) DE4340016A1 (ja)
WO (1) WO1995014858A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19854382B4 (de) * 1998-11-25 2009-01-02 Alstom Verfahren und Vorrichtung zur Zerstäubung flüssigen Brennstoffs für eine Feuerungsanlage
WO2003064903A1 (en) * 2002-01-30 2003-08-07 Global Valve Technology Pty Ltd Non-return and pressure relief valve
US6820598B2 (en) * 2002-03-22 2004-11-23 Chrysalis Technologies Incorporated Capillary fuel injector with metering valve for an internal combustion engine
US7357124B2 (en) * 2002-05-10 2008-04-15 Philip Morris Usa Inc. Multiple capillary fuel injector for an internal combustion engine
US7337768B2 (en) * 2004-05-07 2008-03-04 Philip Morris Usa Inc. Multiple capillary fuel injector for an internal combustion engine
CN102099122B (zh) * 2008-05-20 2013-08-28 G·桑尼尔 用于具有无空气储液箱的分配器的改进泵
US7861684B2 (en) * 2009-05-14 2011-01-04 Advanced Diesel Concepts Llc Compression ignition engine and method for controlling same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU630433A1 (ru) * 1976-08-23 1978-10-30 Центральный научно-исследовательский и проектно-конструкторский институт профилактики пневмокониозов и техники безопасности Ороситель
SU825176A1 (ru) * 1979-04-24 1981-04-30 Od G Univ Im I I Mechnikova Распыливающий элемент
DE3328467A1 (de) * 1983-08-06 1985-02-21 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbares ventil
DE3833093A1 (de) * 1988-09-29 1990-04-12 Siemens Ag Fuer verbrennungskraftmaschine vorgesehene kraftstoff-einspritzduese mit steuerbarer charakteristik des kraftstoffstrahls
DE3909893A1 (de) * 1989-03-25 1990-09-27 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE4129834A1 (de) * 1991-09-07 1993-03-11 Bosch Gmbh Robert Vorrichtung zur einspritzung eines brennstoff-gas-gemisches

Also Published As

Publication number Publication date
WO1995014858A1 (de) 1995-06-01
US5685494A (en) 1997-11-11
JPH08507582A (ja) 1996-08-13
EP0680560A1 (de) 1995-11-08
DE59407831D1 (de) 1999-03-25
DE4340016A1 (de) 1995-06-01

Similar Documents

Publication Publication Date Title
EP1382379B1 (de) Verfahren zur Kontrolle der Nachlaufströmung eines Wirbelgenerators
DE2304525A1 (de) Brennstoffeinspritzdueseneinrichtung
DE60023088T2 (de) Brennstoffeinspritzventil für Direkteinspritzung und mit dieser Vorrichtung ausgestatteter Verbrennungsmotor
DE102017206849A1 (de) Fluidische Baugruppe
DE2820695A1 (de) Mit einem hohlzylinderfoermigen ultraschall-schwingteil arbeitende kraftstoffzufuhr-vorrichtung
DE19948674B4 (de) Verbrennungseinrichtung, insbesondere für den Antrieb von Gasturbinen
EP1184565A2 (de) Lochscheibe, insbesondere für Einspritzventile und Verfahren zur Herstellung einer Lochscheibe
EP0704620A2 (de) Brennstoffeinspritzvorrichtung
DE4328418A1 (de) Elektromagnetisch betätigbares Kraftstoffeinspritzventil
EP0680560B1 (de) Elektromagnetisch betätigbares kraftstoffeinspritzventil
DE102005017420A1 (de) Brennstoffeinspritzventil
DE4303813C1 (de) Kraftstoffeinspritzdüse für Brennkraftmaschinen
DE10202995A1 (de) Rotorblatt für eine Windkraftanlage mit einer Dämpfereinrichtung
EP2765303A1 (de) Ventil zum Einspritzen von Kraftstoff
DE10041431A1 (de) Kompressorventilanordnung
EP1409867B1 (de) Brennstoffeinspritzventil
DE2901732A1 (de) Niederdruck-brennstoffeinspritzsystem
EP2478211A1 (de) Düsenbaugruppe für ein einspritzventil und einspritzventil
DE4442350A1 (de) Zerstäubungssieb und Brennstoffeinspritzventil mit einem Zerstäubungssieb
WO1995002754A1 (de) Schalldämpfer für verbrennungsmotor, insbesondere einzylinder-dieselmotor
DE1551648B2 (de) Zerstäubungsbrenner für flüssigen Brennstoff
DE102006044439A1 (de) Brennstoffeinspritzventil
EP1379777B1 (de) Brennstoffeinspritzventil mit einer zerstäuberscheibe
WO2017152200A1 (de) Zweitakt-verbrennungsmotor
DE102010063307A1 (de) Ventil zum Abspritzen eines Fluids

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19951201

17Q First examination report despatched

Effective date: 19970429

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 59407831

Country of ref document: DE

Date of ref document: 19990325

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990420

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20021113

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021123

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021216

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040602

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20031118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051118