EP1518050A1 - Injecteur pour un systeme d'injection - Google Patents

Injecteur pour un systeme d'injection

Info

Publication number
EP1518050A1
EP1518050A1 EP03737904A EP03737904A EP1518050A1 EP 1518050 A1 EP1518050 A1 EP 1518050A1 EP 03737904 A EP03737904 A EP 03737904A EP 03737904 A EP03737904 A EP 03737904A EP 1518050 A1 EP1518050 A1 EP 1518050A1
Authority
EP
European Patent Office
Prior art keywords
injector
bore
pressure
drilling
injection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03737904A
Other languages
German (de)
English (en)
Other versions
EP1518050B1 (fr
Inventor
Jürgen Dick
Heinz Lixl
Johann Massinger
Martin Simmet
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.)
Continental Automotive GmbH
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1518050A1 publication Critical patent/EP1518050A1/fr
Application granted granted Critical
Publication of EP1518050B1 publication Critical patent/EP1518050B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • 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
    • F02M61/167—Means for compensating clearance or thermal expansion
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator

Definitions

  • the invention is based on an injector for an injection system, which is designed for injecting fuel into an internal combustion engine.
  • the injector is connected by means of a high-pressure line to a high-pressure accumulator (rail) of the injection system, which provides the fuel required for injection into a cylinder of the internal combustion engine.
  • the fuel is provided by a high-pressure pump with a certain operating pressure in the high-pressure accumulator.
  • the high-pressure bore which is made inside the injector, is designed such that it forms the largest possible buffer store for the fuel.
  • the high pressure hole is in close proximity to the injection holes of the nozzle unit.
  • the measures listed in the dependent claims provide advantageous developments and improvements to the injector specified in claim 1.
  • a particularly favorable solution is seen in the fact that the high-pressure bore in the injector is designed as a stepped bore.
  • the stepped bore can have two or more drilling stages, each of which is drilled with a different drilling diameter.
  • the pressure waves propagating in the individual bore stages are reflected irregularly on the bore walls, so that they partially compensate for or weaken one another.
  • the damping of the pressure waves is the more pronounced the more drilling stages can be attached to the high-pressure drilling.
  • a particularly advantageous solution is also seen in making the individual drilling stages of the high-pressure drilling narrower in the flow direction of the fuel, for example. You start at the top of the injector with the widest hole and then drill the next hole with a smaller diameter so that the narrowest hole is formed in the area of the nozzle tip. Such an arrangement of the individual drilling stages can be carried out particularly easily in terms of production technology. From a fluidic point of view, there is also the advantage that the pressure waves are damped the more they have moved from their actual point of origin at the tip of the nozzle needle.
  • the bore diameter can be increased from step to step.
  • the volume for the fuel to be stored can also be specified in a simple manner. It seems advantageous to make the volume for the individual drilling stages smaller in the flow direction of the fuel. In this way, a relatively large storage volume for the fuel is obtained in the upper part of the injector, since there is usually enough space available for the expansion of the high-pressure bore. In the case of the lower drilling stages, on the other hand, the volume can be designed in such a way that the damping effect of the pressure waves is particularly pronounced.
  • a further improvement in the damping effect for the pressure waves can also be achieved if the transition between two drilling stages is provided with a beveled, in particular with a conical, ring surface. At the The pressure waves are also broken and partially absorbed in the ring surface.
  • transitions In order to avoid that new vibrations can form at the transition between two adjacent drilling stages due to different flow velocities in the individual drilling stages, it is proposed in an alternative embodiment of the invention to design the transitions continuously.
  • Such stepless transitions which are, for example, arc-shaped, can be easily manufactured using a correspondingly shaped profile cutter.
  • the two bores are drilled parallel to the longitudinal axis of the injector housing and have an access opening at the upper end of the injector housing. These access openings provide good access for connecting electrical lines for the piezoelectric actuator and an external fuel line.
  • the injector according to the invention is particularly well suited for use in a common rail injection system. Particularly when injecting diesel fuel, a very high fuel pressure is used, so that here the intensity of the pressure waves and the vibrations is particularly high.
  • FIG. 1 shows a schematic illustration of a cross section through an injector according to the invention
  • FIG. 2 shows schematically two transition between two drilling stages
  • FIG. 3 shows a common rail injection system with an arrangement of four injectors according to the invention.
  • an embodiment of an injector 10 according to the invention is shown in a schematic representation.
  • an injector housing 1 can first be seen, into which an axially parallel, step-shaped longitudinal bore is made.
  • the longitudinal bore can be seen in the right part of Figure 1 and is designed as a high pressure bore 2. It has an access opening 13 at its upper end, to which an external fuel line can be connected, for example with a screw thread.
  • a further step-shaped bore 10 is made in the left part of FIG.
  • Your drilling stages are preferably designed so that the drilling diameters widen from top to bottom towards the nozzle tip.
  • At the upper end of the injector housing 1 there is also an access opening 13, at which an electrical connection and control lines for the piezoelectric actuator 9 can be provided.
  • the two stepped bores 2, 10 lying next to one another are preferably designed with their bore diameters in such a way that in a bore cross-section the two neighboring cross-sectional areas 14a, 14b behave inversely proportional to each other.
  • there is a larger hole so that the sum of the drill cross-sections is preferably constant in different stages. This advantageously ensures that the wall thickness between the two bores is always homogeneous and sufficiently strong to withstand the high fuel pressure.
  • the upper end of the piezoelectric actuator 9 is fixed to the injector housing 1. Its lower end is designed to be movable and acts on a nozzle needle 6, which is arranged in a nozzle unit 11, when the length changes axially.
  • the nozzle needle 6 can open or close the 11 fuel-tight in response to control signals on the actuator with its lower conical part of the injection holes 5 of the 'nozzle assembly.
  • a high-pressure chamber 7 as well as an inlet throttle 3 and an outlet throttle 8 are further provided in the nozzle unit 11.
  • the inlet throttle 3 is connected to an inlet line 4, which is fed by the high-pressure bore 2 and essentially conveys the fuel under high pressure to the nozzle needle 6, so that the fuel emerges via the injection holes 5 when the nozzle needle 6 is lifted and into the combustion chamber Internal combustion engine can be injected.
  • the high-pressure bore 2 forms a buffer store for the fuel to be injected.
  • a connection for an external connecting line is provided at the access opening 13, which can be firmly connected to the high-pressure bore 2, for example by means of a union nut.
  • the fuel to be injected for example gasoline or diesel, becomes the injector 11 via the connecting line promoted.
  • the black arrow above the high-pressure bore 2 should indicate the direction of flow of the fuel.
  • the high-pressure bore 2 is designed as a multiple stepped bore.
  • three drilling stages with the drilling diameters dl, d2 and dn are shown as an example.
  • the uppermost drilling step has the largest diameter d1, while the drilling steps below it are each designed with a smaller diameter d2, dn.
  • the number of drilling stages is freely selectable and depends on the injector type or the intended use. Alternatively, subsequent bores can also be further developed.
  • the length of the bores is preferably chosen so that the largest possible buffer volume is created, but sufficient wall thicknesses remain for the high-pressure bore.
  • the uppermost drilling step has a length L1 and the subsequent drilling steps have the lengths L2 and Ln. In this way, a certain volume VI, V2, Vn for the fuel to be stored can thus be specified for each drilling stage with very simple means, since the individual volumes V are based on the trigonometric formula
  • the aim is to make the storage volume of the entire buffer storage as large as possible, so that, depending on the type of engine for which the injector 1 is to be used, the high-pressure storage (rail) known per se of a commercially available common rail injection system can possibly be saved.
  • the injection with the injector of the invention can be made easier and cheaper.
  • the necessary installation space in the vehicle is advantageously reduced, so that the injection system, particularly in the case of combustion engines, gates with many cylinders and in tight spaces in the engine compartment.
  • the individual volumes VI, V2, Vn are designed as a function of operating conditions of the internal combustion engine.
  • the uppermost volume VI could be made somewhat smaller, the volume V2 larger and the volume Vn smaller or the same size again.
  • requirements of the internal combustion engine can be optimized, for example with regard to emissions, engine performance and fuel consumption.
  • a further important advantage of the invention is also seen in that the different drilling diameters d1, d2, dn dampen the pressure waves or vibrations occurring during the injection process. Since the pressure waves on the side walls of the individual drilling stages are broken, reflected and absorbed irregularly, the damping results in a more uniform injection process. Precise control is particularly important in the case of multiple injection, in which the fuel is injected in several individual injection pulses at the shortest time intervals.
  • the buffer store of the high pressure bore 2 also supports this injection process.
  • FIG. 2 shows an enlarged view of a section of the high-pressure bore 2 of the injector 11 explained in FIG. 1.
  • the transitions 20 that form between two adjacent drilling stages are explained in FIG.
  • the transitions 20 are designed, for example, with a beveled, in particular a conical, ring surface.
  • This soft transition for example from diameter d1 to diameter d2, reflects the pressure waves even more diffusely and absorbs them, so that the damping properties are further improved.
  • the edges of the annular surface 20, which each arise between a drilling stage and the annular surface, were further rounded off with a corresponding tool, so that a stepless transition from the drilling stage d2 to the drilling stage dn is produced. This prevents new pressure waves or vibrations from occurring at the edges, which could impair the even course of the injection.
  • FIG. 3 shows a schematic arrangement for a common rail injection system, as is used for example in diesel injection. It shows the high-pressure accumulator (rail) 31 described above and known per se, to which a total of four injectors 11 are hydraulically connected via four connecting lines 32.
  • the size of the high-pressure accumulator 31 and the number of connected injectors 11 essentially depends on the number and the volume of the combustion chambers (cylinders) of the type of engine used. In this case, the four injectors 11 are provided for a four-cylinder engine.
  • the fuel is pumped into the high-pressure accumulator 31 at high pressure by a high-pressure pump 33, which is connected to the high-pressure accumulator 31, and is then available for injection in the individual buffer accumulators of the connected injectors 11.
  • the high-pressure pump 33 is in turn supplied by a fuel pump 35.
  • the fuel pump 35 pumps the fuel from a storage container (symbolized by the arrow in FIG. 3) with a lower overpressure via lines 36 and one or more filter units 34 to the high-pressure pump 33.
  • the injection holes 5 (FIG 1) opened or closed again and thus the injection process can be controlled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un injecteur (11) pour un système d'injection, pouvant être utilisé pour l'injection de carburant dans le cylindre d'un moteur à combustion interne. Un tel système d'injection est connu par exemple sous le nom de système d'injection à rampe commune (common rail system). En raison des conduites de raccordement (32) relativement longues situées entre l'accumulateur haute pression (31) et l'injecteur (11), il se produit, lors de l'injection, une chute de pression au niveau des orifices d'injection (5) de l'injecteur (11), ladite chute de pression produisant des ondes de pression indésirables, notamment lors d'une injection multiple. Ce phénomène nuit à l'homogénéité du processus d'injection. L'objectif de l'invention est donc de concevoir l'orifice haute pression (2), ménagé dans le carter d'injecteur, sous la forme d'un accumulateur tampon (Vl,V2,Vn). Cet objectif est atteint par exemple, de manière avantageuse, par le fait que l'orifice haute pression (2) est conçu sous la forme d'un orifice à plusieurs étages.
EP03737904A 2002-07-02 2003-05-26 Injecteur pour un systeme d'injection Expired - Fee Related EP1518050B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10229638 2002-07-02
DE10229638 2002-07-02
PCT/DE2003/001702 WO2004005699A1 (fr) 2002-07-02 2003-05-26 Injecteur pour un systeme d'injection

Publications (2)

Publication Number Publication Date
EP1518050A1 true EP1518050A1 (fr) 2005-03-30
EP1518050B1 EP1518050B1 (fr) 2011-10-05

Family

ID=30009774

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03737904A Expired - Fee Related EP1518050B1 (fr) 2002-07-02 2003-05-26 Injecteur pour un systeme d'injection
EP03762417A Expired - Fee Related EP1530680B1 (fr) 2002-07-02 2003-06-24 Procede de fabrication d'un module dote d'un insert mobile pour une soupape d'injection et soupape d'injection associee

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03762417A Expired - Fee Related EP1530680B1 (fr) 2002-07-02 2003-06-24 Procede de fabrication d'un module dote d'un insert mobile pour une soupape d'injection et soupape d'injection associee

Country Status (2)

Country Link
EP (2) EP1518050B1 (fr)
WO (2) WO2004005699A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026171B4 (de) * 2004-05-28 2010-05-20 Continental Automotive Gmbh Einspritzventil
US7334570B2 (en) * 2005-04-01 2008-02-26 Achates Power, Inc. Common rail fuel injection system with accumulator injectors
DE102005055359A1 (de) 2005-11-21 2007-05-24 Robert Bosch Gmbh Zwischenplatte für einen Kraftstoffinjektor und Kraftstoffinjektor
DE102006046898A1 (de) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Drosselplatte für Magnetventil
FI123513B (fi) * 2010-12-02 2013-06-14 Waertsilae Finland Oy Polttoaineen syöttöyksikkö, menetelmä sen käyttämiseksi ja polttomoottori
AT512439B1 (de) * 2012-01-26 2013-12-15 Bosch Gmbh Robert Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2033051A1 (de) * 1970-07-03 1972-01-05 Bosch Gmbh Robert Elektrisch gesteuerte Kraftstoffeinspritzeinrichtung
DE2120030A1 (de) * 1971-04-23 1972-11-02 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzdüse
DE2461309A1 (de) * 1973-12-26 1975-07-10 Isuzu Motors Ltd Brennstoffeinspritzvorrichtung
US4526151A (en) * 1982-03-12 1985-07-02 Mitsubishi Jukogyo Kabushiki Kaisha Fuel injection device
JPH0688557A (ja) * 1992-07-24 1994-03-29 Nippondenso Co Ltd 電磁制御式燃料噴射装置
DE19822503C1 (de) * 1998-05-19 1999-11-25 Siemens Ag Steuerventil für Kraftstoffeinspritzventil
DE19921242C1 (de) * 1999-05-07 2000-10-26 Siemens Ag Verfahren zum Positionieren des Stellantriebs in einem Kraftstoffinjektor und Vorrichtung zur Durchführung des Verfahrens
DE10055644A1 (de) * 2000-11-10 2002-05-23 Siemens Ag Verfahren zum Einstellen eines Leerhubs eines Injektors, wobei der Leerhub durch eine Aktoreinheit mit einem elektrisch ansteuerbaren Aktor und einen vom Aktor betätigten Ventilkolben gebildet wird
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
US6629650B2 (en) * 2001-07-10 2003-10-07 Delphi Technologies, Inc. Fuel injector with integral damper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004005699A1 *

Also Published As

Publication number Publication date
WO2004005704A1 (fr) 2004-01-15
EP1518050B1 (fr) 2011-10-05
EP1530680A1 (fr) 2005-05-18
EP1530680B1 (fr) 2011-09-28
WO2004005699A1 (fr) 2004-01-15

Similar Documents

Publication Publication Date Title
EP1485609B1 (fr) Dispositif d'injection de carburant pour des moteurs a combustion interne stationnaires
EP2635794B1 (fr) Dispositif pour injecter du carburant dans la chambre de combustion d'un moteur à combustion interne
EP2027385B1 (fr) Dispositif d'injection de carburant dans une chambre de combustion d'un moteur à combustion interne
EP1342005B1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
EP0277939B1 (fr) Dispositif d'injection de combustible
DE102016209423A1 (de) Hochdruckspeicher und Verfahren zur Herstellung eines Hochdruckspeichers
EP1234112A1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
EP1770275B1 (fr) Injecteur à trous avec un volume de retenue pour un dispositif d'injection de carburant
EP1126160B1 (fr) Injecteur pour injecter du carburant dans un moteur à combustion interne
EP1518050B1 (fr) Injecteur pour un systeme d'injection
EP1574701A1 (fr) Injecteur de common rail
EP1185785B1 (fr) Systeme d'injection
EP3055549B1 (fr) Ensemble piston-conduit de fluide, en particulier ensemble piston de commande-alésage de commande
AT512277B1 (de) Injektor eines modularen Common-Rail-Kraftstoffeinspritzsystems mit Durchflussbegrenzer
DE10238569A1 (de) Injektor für ein Kraftstoff-Einspritzsystem eines Verbrennungsmotors sowie Filtervorrichtung
DE102008041167A1 (de) Kraftstoffinjektor
DE10307002A1 (de) Kraftstoffeinspritzdüse und Pumpe-Düse-Einheit
EP1157208B1 (fr) Buse d'injection a trou borgne pour moteurs a combustion interne a passage arrondi entre le trou borgne et le siege de l'aiguille d'injecteur
DE102019209002A1 (de) Komponente, insbesondere Brennstoffleitung oder Brennstoffverteiler, und Brennstoffeinspritzanlage
DE102013212142A1 (de) Düsenbaugruppe für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE102018001566A1 (de) Dual-Fuel-Kraftstoffinjektor
DE102004022428A1 (de) Einspritzventil für Brennkraftmaschinen
DE102004016508A1 (de) Common-Rail-System
EP1673532B1 (fr) Alimentation haute pression pour injection a rampe commune
WO2013127668A1 (fr) Système d'alimentation en carburant pour un moteur à combustion interne

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

17P Request for examination filed

Effective date: 20041216

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CONTINENTAL AUTOMOTIVE GMBH

17Q First examination report despatched

Effective date: 20080703

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 50313987

Country of ref document: DE

Effective date: 20111208

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

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111005

26N No opposition filed

Effective date: 20120706

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 50313987

Country of ref document: DE

Effective date: 20120706

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

Effective date: 20120526

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: 20120526

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20180531

Year of fee payment: 16

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

Ref country code: FR

Payment date: 20190522

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50313987

Country of ref document: DE

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: 20191203

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50313987

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

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: 20200531