EP0685645B1 - Soupape d'injection pour un système d'injection de combustible d'un moteur à combustion interne, en particulier d'un moteur diesel - Google Patents

Soupape d'injection pour un système d'injection de combustible d'un moteur à combustion interne, en particulier d'un moteur diesel Download PDF

Info

Publication number
EP0685645B1
EP0685645B1 EP95103560A EP95103560A EP0685645B1 EP 0685645 B1 EP0685645 B1 EP 0685645B1 EP 95103560 A EP95103560 A EP 95103560A EP 95103560 A EP95103560 A EP 95103560A EP 0685645 B1 EP0685645 B1 EP 0685645B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve body
injection valve
injection
nozzle needle
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
EP95103560A
Other languages
German (de)
English (en)
Other versions
EP0685645A2 (fr
EP0685645A3 (fr
Inventor
Christian Dipl.Masch.Ing. Eth Mathis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0685645A2 publication Critical patent/EP0685645A2/fr
Publication of EP0685645A3 publication Critical patent/EP0685645A3/fr
Application granted granted Critical
Publication of EP0685645B1 publication Critical patent/EP0685645B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means

Definitions

  • the invention relates to an injection valve for a fuel injection system an internal combustion engine, in particular a diesel engine, with a valve housing, one slidably arranged in this multi-part valve body and with at least one in a working cylinder mouth opening through which one of a pressure chamber outgoing fuel supply by controlling the valve body he follows.
  • a generic injection valve according to EP-A1 0 393 590 has a multi-part assembled housing and one in it of a solenoid valve arranged longitudinally displaceable which has a nozzle needle controlling the fuel injection and a piston-like extension part arranged coaxially to it comprises, which consists of a guided in the housing and an in Diameter narrowed lower part.
  • a between that Solenoid valve and the control valve provided with the extension part causes a gradual increase at the beginning of an injection the amount of fuel injected into a combustion cylinder.
  • With a such an injector also has an increased closing speed the nozzle needle achieves what is a positive effect Exhaust emissions from usually several such injection valves having internal combustion engine reduced.
  • the object of the present invention is to: To further develop the injection valve according to the type described in the introduction, that even with increased closing speed like even with a long design of its valve body when closing on the Nozzle tip of the valve acting too fast Overloading this tip leads to the injection valve its structure is not that complicated.
  • the object is achieved in that between the the injection opening controlling the nozzle needle and the at least one overlying valve body part of the multi-part valve body fuel-filled damping chamber with in any position of the Valve body constant inlet cross-sections Derivatives is formed.
  • Fig. Shows an injection valve 2 for a particular as a diesel engine provided internal combustion engine, which is not shown.
  • the injector 2 is suitable for a conventional injection system of a diesel engine, so that in this regard to a detailed explanation can be dispensed with. It essentially instructs Multi-part valve body that can be assembled in a conventional manner 47, 53, a longitudinally displaceably guided valve body 15, which actuates the latter and is designed as an electromagnetic valve 227 Control valve 20, an inflow line 13 for the high pressure standing fuel and a drain line 10.
  • the Multi-part valve body 15 is in the lower part of one of the inflow line 13 surrounded by fuel-fed pressure chamber 14 and it closes or opens one in a working cylinder of the diesel engine leading injection opening 4 or its feed line, which in the in the Working cylinder protruding nozzle tip 24 of the valve housing 47 is included. In the middle area this valve body is in one Passed bore of the valve housing 47 and protrudes at the upper end into a control chamber 17a and there is also a compression spring 97 pressed in the closing direction.
  • the control chamber 17a is with the valve 25 and the inflow line 13 with one High-pressure part containing fuel on the one hand and over the Line part 19 and this closable control valve 20 with the Drain line 10 connected on the other hand.
  • For the inflow line 13 is a radial to the injection valve 2 connection 92 is provided, the one the connecting ring 70 encompassing the valve housing 47 and a feed line 13 has a threaded nut 72 pressing against the housing.
  • damping space 43 between which the injection opening 4 controlling nozzle needle 15a and the one above it Valve body part 15b of the two-part valve body 15 is provided, such as this also in the enlarged partial longitudinal section according to FIG Fig.2 is clarified.
  • This damping space 43 is on the one hand between the nozzle needle 15a and the valve housing 47 and on the other hand, one between the valve body part 15b and the Valve housing 47 formed almost play-free guide fit 44, 45 upstream or downstream. Accordingly, one results in the Amount of restricted inflow or outflow into or out of this steam chamber 43 out of or into the adjacent pressure chamber 14 or chamber 49.
  • the injector 2 is mostly off conventional components can be assembled and therefore does not become more complex to manufacture.
  • the spring force acts when the injection valve 2 is closed and at rest a compression spring 97 on the valve body part 15b against the nozzle needle 15a and leads their end faces 16 located in the damping space 43, 25 to a mutual touch before the next Injection takes place while these end faces 16, 25 after a valve opening slowly move away from each other due to the high pressure from the pressure chambers 14, 49 through the Guide fits 44, 45 flowing in the damping space 43 limited Fuel and because the average pressure in the damping chamber 43 approximately to the pressure of the injection-side surface of the nozzle needle 15a falls off.
  • valve body 15 If the valve body 15 is subsequently closed, there is only a direct impact of the relatively light nozzle needle 15a in the nozzle tip 24, however, also in the closing direction moved valve body part 15b by the between this and the Nozzle needle formed liquid cushion is cushioned and thereby the desired permanent reduction of the maximum load on the lowest point of the injector 2 is reached.
  • the security can be increased by for example, when the control valve 20 is jammed and thus connected, the injection opening 4 of the damping space 43 is constantly supplied with fuel and consequently the nozzle needle 15a from the valve body part 15b to a closure of the Injection opening 4 drifts away.
  • This damping space 43 also preferably has a maximum of one volume on, which approximates the cross-sectional area of the nozzle needle 15a and corresponds to a gap height of a maximum of two millimeters.
  • the control valve 20 designed as an electromagnetic valve 227 has one Control valve body 38 by a lower end valve seat 57 the vertical and then into a horizontal drain line 10 merging line part 19 in the valve housing 47 closes or opens.
  • This control valve body 38 has one of its valve seat 57 outgoing and communicating with the line part 19 60 'on which inside the control valve body 38 for the purpose of generation a closing force acting in the same closing direction is.
  • this bore 60 ' is at the top of an Control valve body 38 arranged coaxially in this longitudinally movable Pin 60 limited, which at its upper end regardless of Control valve body 38, in the present example on the lower Front side of a arranged in the magnetic core 22, with sufficient hardness provided pin is supported.
  • the magnetic core 22 lies with its lower one plan the end face directly on the film disk 61, which in turn is thereby on a flat ring surface of the Valve housing is fixed. Otherwise, the armature 62 and its neighboring parts provided recesses 66 through which at Movement of the armature flows around it Fuel is enabled. By an appropriate choice of Cross section of the recesses 66, the damping effect of adjust the reciprocating control valve body 38.
  • valve 25 is arranged, which via the inflow line 13 one connected to the high pressure part of the control medium annular chamber 28 and a top closing this at the top has annular valve seat 27, which when opening this additional Connection between the high pressure part and the control chamber 17b generated.
  • the valve 25 expediently has a coaxial with Nozzle needle 15 extending valve body 26 in the valve housing 47 is laterally sealing. This cylindrical valve body 26 and the valve housing 47 together form the annular chamber 28 and the valve seat 27 closing off this chamber 28.
  • valve body 26 protrudes with the one facing the nozzle needle 15 Face into the control chamber 17a and with the other face in one communicating with the drain line 10 via the control valve 20 Additional chamber 17b, which with the control chamber 17a via a Valve body 26 through throttle bore 23 is connected and on which borders the valve seat 27 on the circumference.
  • the latter is like this formed that the valve body 26 with its upper oblique ring edge sealing against a corresponding ring surface in the closed state rests in the housing bore and the annular chamber 28 surrounds the valve body 26 at least in its upper region.
  • This but conical valve seat 27 could also be cylindrical or be designed as a flat surface.
  • the valve body 26 with a cross, the inflow line 13 with the control chamber 17b connecting throttle bore 21 provided by means of a permanent connection of the control medium from the high pressure part to it Tax chamber is carried out.
  • valve body 26 In the closed position, the valve body 26 has a predetermined distance to the nozzle needle 15 below and on and between this is also a compression spring 96 that presses them apart provided, while in the open position of the nozzle needle 15, which by releasing the control valve 20 and an associated one Pressure drop in the control chamber 17a causes this nozzle needle 15a strikes on the lower end face 16 of the valve body 26.
  • the injection chamber 2 shown in FIG. 3 is the damping chamber 43 not directly as in the first embodiment Valve housing 47 but from one axially displaceable in the latter Surround ring element 15d, the latter the lower end of the Valve body part 15b forms.
  • the nozzle needle 15a which in turn the Inlet opening 4 opens or closes, projects into it with almost no play Ring element 15d and delimited together with one above it Ring element 15 longitudinally displaceable spacer 15c the damping space 43.
  • the length of the Spacer 15c can be length tolerances of the Valve body 15 together with the valve body 26 and the corresponding length formed by the housing parts 47, 53 compensate.
  • the nozzle needle 15a has at least in the lower area an implied non-circular cross-section, which makes this in the round Bore of the valve housing forms a free space for the pressure chamber. Otherwise, this injection valve 2 works analogously to that 1 and therefore all details are no longer explained. It has the advantage according to FIG. 1 that it has a lower Number of surfaces to be sanded and an accurate Guide fit in the housing 47 is omitted, which makes it from a tougher material can be made and definitely one generated high-frequency oscillating stroke of the nozzle needle 15a becomes.
  • FIG. 4 shows a further variant of an injection valve 2 in the for the invention relevant part shown. It is similar to itself that constructed according to FIG. 3, but the ring element 15d is for this purpose provided independently of the upper valve body part 15b. The latter and the nozzle needle 15a are round in the ring element 15d Training in this led to almost no play in this. According to the invention is again between the nozzle needle 15a and the Valve body part 15b formed damping space 43 is provided. That this surrounding ring element 15d is designed as an inner sealing tube and can with a correspondingly thin wall instead of metallic Material also consist of plastic. It's over the two ends the nozzle needle 15a and the valve body part 15b inserted and forms together with these a tight fit. This is the damping Function of the valve body 15 somewhat reduced.
  • This injector is inexpensive to manufacture and the ring element used therein 15d can transmit tensile forces and exercises a somewhat articulated Function off. If this ring element 15d is ground on the inside and is not stuck on the nozzle needle 15a and on the valve body part 15b, then the compression spring 97 acting on the end of this serves for Positioning of the same.
  • ring element 15d similar that according to Fig.4, which has a different inside Diameter in that with the nozzle needle 15a to that with the Has valve body part 15b in the connected area. It is supported on its upper end face on the compression spring 97.
  • the guide cross section of the Valve body part 15b in the ring element 15d larger than that of the Nozzle needle 15a. So that a full opening stroke Nozzle needle 15a with slight superimposed vibrations reached and when closed, the kinetic energy of the valve body part 15b on the ring member 15d by the reduction in diameter transferred from the latter formed stop surface.
  • damping space 43 could each have one of the guide fits throttle bore connected in parallel with the Pressure chamber to be connected.
  • control medium flowing into the control chambers is usually fuel, which as it were in the storage chamber and subsequently through the injection openings into a fuel cylinder is injected.
  • fuel which as it were in the storage chamber and subsequently through the injection openings into a fuel cylinder is injected.
  • a separate liquid can be used while the fuel would only be provided for injection.
  • damping space 43 could be provided with a a lower pressure than the pressure chamber Leak oil return line must be connected.
  • the pressure chamber 49 could in principle correspond to a lower pressure the drain line 10.
  • the invention Effect of damping is ensured when the through the guide fit 45 to the passage cross section formed by the guide fit 44 is not more than ten times larger.
  • the invention is with the exemplary embodiments explained above adequately demonstrated.
  • the Nozzle needle 15a could be made in two parts and the damping chamber would be arranged above this two-part nozzle needle.

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)

Claims (10)

  1. Soupape d'injection (2) pour un système d'injection de carburant d'un moteur à combustion interne, notamment d'un moteur diesel, comportant un boítier de soupape (47, 53), un corps de soupape (15) en plusieurs parties disposé coulissant dans celui-ci et comportant au moins un orifice d'entrée (4) qui débouche dans un cylindre de travail et à travers lequel il se produit un apport de carburant, partant d'une chambre de compression (14), par commande séparée du corps de soupape (15), caractérisée en ce qu'il est formé, entre une aiguille d'injection (15a) commandant l'orifice d'injection (4) et au moins une partie (15b) située au-dessus du corps de soupape (15) en plusieurs parties, une chambre amortisseur (43) remplie de carburant avec des conduits d'arrivée, respectivement de départ, présentant des sections constantes de passage dans chaque position du corps de soupape (15).
  2. Soupape d'injection (2) selon la revendication 1, caractérisée en ce qu'il est monté devant, respectivement derrière la chambre de vaporisation (43), un ajustement de guidage (44, 45) approximativement sans jeu, formé d'une part entre l'aiguille d'injection (15a) et le boítier de soupape (47) et d'autre part entre la partie (15b) du corps de soupape et le boítier de soupape (47), et cette chambre amortisseur (43) est reliée en conséquence à la chambre de compression (14) qui contient le carburant.
  3. Soupape d'injection (2) selon la revendication 1 ou 2, caractérisée en ce que dans le cas où la soupape d'injection (2) est fermée, une force de ressort de soutien, agissant sur la partie (15b) du corps de soupape, déplace cette dernière contre l'aiguille d'injection (15a), jusqu'à un contact réciproque de ses faces frontales (16), tandis que celles-ci s'écartent lentement de manière définie, lorsque l'orifice d'injection (4) est ouvert; en raison du carburant qui s'écoule de manière limitée de la chambre de compression (14) dans la chambre amortisseur (43).
  4. Soupape d'injection (2) selon l'une des revendications précédentes, caractérisée en ce que la chambre amortisseur (43) est reliée en supplément à la chambre de compression (14), par un perçage d'étranglement monté en parallèle aux ajustements de guidage (44, 45).
  5. Soupape d'injection (2) selon l'une des revendications précédentes, caractérisée en ce que la chambre amortisseur (43) est reliée, par au moins un ajustement de guidage (45), à une conduite de retour d'huile de fuite qui part de la soupape d'injection (2) et qui présente une pression inférieure à celle de la chambre de compression (14).
  6. Soupape d'injection (2) selon l'une des revendications précédentes, caractérisée en ce que la chambre amortisseur (43) est enfermée directement par le boítier de soupape (47) ou par un élément annulaire (15d) déplaçable axialement dans ce dernier ou fixe.
  7. Soupape d'injection (2) selon la revendication 6, caractérisée en ce que l'élément annulaire (15d) fait partie de la partie (15b) du corps de soupape ou est guidé indépendamment du boítier de soupape (47).
  8. Soupape d'injection (2) selon la revendication 6 ou 7, caractérisée en ce que dans l'élément annulaire (15d), l'aiguille d'injection (15a) et une rondelle d'écartement (15c) disposée dans celui-ci sont guidées approximativement sans jeu et en ce que la chambre amortisseur (43) entoure la rondelle d'écartement (15c).
  9. Soupape d'injection (2) selon l'une des revendications précédentes, caractérisée en ce que l'aiguille d'injection (15a) présente dans la zone qui pénètre dans la chambre amortisseur (43), une section différente, plus grande ou plus petite que celle de la partie (15b) adjacente du corps de soupape.
  10. Soupape d'injection (2) selon la revendication 6, caractérisée en ce que la section de guidage de la partie (15b) du corps de soupape dans l'élément annulaire (15d) est supérieure à celle de l'aiguille d'injection (15a), et donc à la fermeture, l'énergie de déplacement de la partie (15b) du corps de soupape est transmise à l'élément annulaire (15d), par une surface de butée formée par le rétrécissement du diamètre de ce dernier.
EP95103560A 1994-05-02 1995-03-13 Soupape d'injection pour un système d'injection de combustible d'un moteur à combustion interne, en particulier d'un moteur diesel Expired - Lifetime EP0685645B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1358/94 1994-05-02
CH01358/94A CH689267A5 (de) 1994-05-02 1994-05-02 Einspritzventil fuer eine Kraftstoffeinspritzanlage einer Brennkraftmaschine, insbesondere eines Dieselmotors.
CH135894 1994-05-02

Publications (3)

Publication Number Publication Date
EP0685645A2 EP0685645A2 (fr) 1995-12-06
EP0685645A3 EP0685645A3 (fr) 1997-03-26
EP0685645B1 true EP0685645B1 (fr) 2001-06-06

Family

ID=4208593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103560A Expired - Lifetime EP0685645B1 (fr) 1994-05-02 1995-03-13 Soupape d'injection pour un système d'injection de combustible d'un moteur à combustion interne, en particulier d'un moteur diesel

Country Status (6)

Country Link
US (1) US5692683A (fr)
EP (1) EP0685645B1 (fr)
JP (1) JP3710163B2 (fr)
AT (1) ATE201920T1 (fr)
CH (1) CH689267A5 (fr)
DE (1) DE59509315D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011015753A1 (de) 2011-03-31 2012-10-04 Raphael Füchslin Einspritzventil

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917190A1 (de) 1999-04-16 2000-10-26 Mtu Friedrichshafen Gmbh Kraftstoffinjektor für eine Brennkraftmaschine
JP4066959B2 (ja) * 2004-01-27 2008-03-26 株式会社デンソー 燃料噴射装置
FR2871876B1 (fr) * 2004-06-21 2006-09-29 Valeo Climatisation Sa Dispositif d'echange de chaleur a plusieurs rangees de tubes, en particulier pour vehicules automobiles
US7900604B2 (en) * 2005-06-16 2011-03-08 Siemens Diesel Systems Technology Dampening stop pin
JP6137030B2 (ja) * 2014-04-10 2017-05-31 株式会社デンソー 燃料噴射弁

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710138A1 (de) * 1977-03-09 1978-09-14 Maschf Augsburg Nuernberg Ag Mehrloch-einspritzduese
GB2096701A (en) * 1981-04-11 1982-10-20 Lucas Industries Ltd I.C. engine fuel injection nozzles
DE3220398A1 (de) * 1982-01-26 1983-07-28 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen
US4566635A (en) * 1983-08-10 1986-01-28 Robert Bosch Gmbh Fuel injection nozzle for internal combustion engines
GB8809269D0 (en) * 1988-04-20 1988-05-25 Lucas Ind Plc Fuel injection nozzle
EP0343147A3 (fr) * 1988-05-16 1990-10-03 Steyr-Daimler-Puch Aktiengesellschaft Soupape d'injection pour moteurs à combustion interne à injection à compression d'air
DE3844373A1 (de) * 1988-12-30 1990-07-05 Mak Maschinenbau Krupp Verfahren und vorrichtung zum einstellen eines definierten duesenoeffnungsdruckes eines einspritzventils
US5156132A (en) * 1989-04-17 1992-10-20 Nippondenso Co., Ltd. Fuel injection device for diesel engines
DE4126698A1 (de) * 1991-08-13 1992-10-15 Daimler Benz Ag Kraftstoffeinspritzduese fuer brennkraftmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011015753A1 (de) 2011-03-31 2012-10-04 Raphael Füchslin Einspritzventil
WO2012130452A1 (fr) 2011-03-31 2012-10-04 Fuechslin Raphael Soupape d'injection

Also Published As

Publication number Publication date
CH689267A5 (de) 1999-01-15
JP3710163B2 (ja) 2005-10-26
DE59509315D1 (de) 2001-07-12
ATE201920T1 (de) 2001-06-15
EP0685645A2 (fr) 1995-12-06
US5692683A (en) 1997-12-02
EP0685645A3 (fr) 1997-03-26
JPH0842422A (ja) 1996-02-13

Similar Documents

Publication Publication Date Title
DE69217245T2 (de) Freikolbenmaschine mit fluidumenergieanlage
DE3688753T2 (de) Steuereinrichtung für elektro-hydraulisch betätigte Kraftstoffeinspritzventile.
EP1636485B1 (fr) Injecteur pour systemes d'injection de carburant de moteurs a combustion interne, en particulier de moteurs diesel a injection directe
DE2742466A1 (de) Pumpe-duese fuer luftverdichtende einspritzbrennkraftmaschinen
EP0686763A1 (fr) Injecteur de combustible pour moteurs à combustion interne
EP1774166A1 (fr) Dispositif pour injecter du carburant dans la chambre de combustion d'un moteur a combustion interne
DE69918058T2 (de) Hydraulisch betätigter brennstoffinjektor mit nadelventilsitzbetätiger
EP1269008B1 (fr) Soupape d'injection a etranglement de derivation
EP1342005B1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
WO2001023754A1 (fr) Soupape pour commander le passage de liquides
AT501914B1 (de) Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
EP1387937B1 (fr) Soupape d'injection de carburant pour moteurs a combustion, comprenant une chambre d'amortissement reduisant les oscillations de pression
DE19949528A1 (de) Doppelschaltendes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit hydraulischer Verstärkung des Aktors
EP0688950A1 (fr) Système d'injection de carburant
DE2833431A1 (de) Kraftstoffeinspritzduese
EP0685645B1 (fr) Soupape d'injection pour un système d'injection de combustible d'un moteur à combustion interne, en particulier d'un moteur diesel
DE2608937A1 (de) Einspritzduese
DE3115908A1 (de) "brennstoffpumpe"
DE10033428C2 (de) Druckgesteuerter Injektor zum Einspritzen von Kraftstoff
EP1126160A2 (fr) Injecteur pour injecter du carburant dans un moteur à combustion interne
DE3811885C2 (de) Kraftstoffeinspritzvorrichtung mit Vor- und Haupteinspritzung für eine Brennkraftmaschine, insbesondere solche mit Luftverdichtung und Selbstzündung
DE19612721C2 (de) Speichereinspritzsystem mit Voreinspritzung für eine Brennkraftmaschine
DE3247584A1 (de) Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE10002109A1 (de) Einspritzsystem
DE10023960A1 (de) Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine

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: A2

Designated state(s): AT DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE FR GB IT SE

17P Request for examination filed

Effective date: 19970515

17Q First examination report despatched

Effective date: 19970627

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

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): AT DE FR GB IT SE

REF Corresponds to:

Ref document number: 201920

Country of ref document: AT

Date of ref document: 20010615

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010607

REF Corresponds to:

Ref document number: 59509315

Country of ref document: DE

Date of ref document: 20010712

ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

ET Fr: translation filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: SE

Payment date: 20140311

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20140226

Year of fee payment: 20

Ref country code: IT

Payment date: 20140318

Year of fee payment: 20

Ref country code: FR

Payment date: 20140311

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20140312

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20140417

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59509315

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20150312

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 201920

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150313

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 EXPIRATION OF PROTECTION

Effective date: 20150312