[go: up one dir, main page]

EP1861617B1 - Dispositif d'injection de carburant - Google Patents

Dispositif d'injection de carburant Download PDF

Info

Publication number
EP1861617B1
EP1861617B1 EP06708414A EP06708414A EP1861617B1 EP 1861617 B1 EP1861617 B1 EP 1861617B1 EP 06708414 A EP06708414 A EP 06708414A EP 06708414 A EP06708414 A EP 06708414A EP 1861617 B1 EP1861617 B1 EP 1861617B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
pressure
injection valve
piston
electromagnetic
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.)
Not-in-force
Application number
EP06708414A
Other languages
German (de)
English (en)
Other versions
EP1861617A1 (fr
Inventor
Andreas Posselt
Susanne Friedle
Andreas Gutscher
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 EP1861617A1 publication Critical patent/EP1861617A1/fr
Application granted granted Critical
Publication of EP1861617B1 publication Critical patent/EP1861617B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/027—Injectors structurally combined with fuel-injection pumps characterised by the pump drive electric
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/16—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps characterised by having multi-stage compression of fuel
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Definitions

  • the invention relates to a device for injecting fuel according to the preamble of the main claim.
  • the inventive device for injecting fuel with the characterizing features of the main claim has the advantage that the pressure gain in the fuel injector is simplified and made cheaper by at least one fuel injector, an electromagnetic pressure booster is arranged.
  • the electromagnetic pressure booster is connected directly upstream of the at least one fuel injection valve. In this way, only a very small volume is put on a higher pressure, so the energy expenditure for the pressure increase is low and the pressure increase can be reached in a very short time.
  • the electromagnetic pressure booster is plugged into an input channel of the fuel injection valve, clipped, welded or pressed. These compounds are particularly simple and inexpensive.
  • the electromagnetic pressure booster is fluidly connected to a fuel line.
  • the fuel injection valve used is an electromagnetic, piezoelectric or magnetostrictive fuel injection valve.
  • the electromagnetic pressure booster has an electromagnet with an exciter coil and an armature, wherein the armature is operatively connected to a piston mounted axially movable in a pressure chamber of the electromagnetic pressure booster, since such a pressure booster is particularly simple and is very inexpensive to produce.
  • the electromagnetic pressure booster has an inlet channel, which opens into the pressure chamber via an inlet opening and the pressure chamber has an outlet which is flow-connected to an inlet channel of the fuel injection valve.
  • FIG.1 a view of a fuel injection valve with an electromagnetic pressure booster
  • Fig.2 a first embodiment
  • Fig. 3 A second embodiment of the electromagnetic pressure booster.
  • Fig. 1 shows a fuel injection valve with an electromagnetic pressure booster.
  • the device according to the invention has at least one fuel injection valve 1, which injects fuel, for example, in a direct injection into a combustion chamber of an internal combustion engine and in a suction tube injection into a so-called intake manifold of an internal combustion engine.
  • the at least one fuel injection valve 1 is connected to a fuel line 2, for example a fuel distributor, via which the at least one fuel injection valve 1 is supplied with fuel.
  • the fuel injection valve 1 is designed, for example, as an electromagnetic, piezoelectric or magnetstrictive valve.
  • a delivery unit 3 is provided, which is designed for example as a flow pump and fuel from a reservoir 4 raises pressure in the fuel line 2 promotes.
  • the emissions of an internal combustion engine in a so-called cold start must be reduced.
  • the required pressure increase in the fuel line 2 is so high that it can not be achieved by the provided delivery unit 3.
  • the delivery unit 3 is followed by another second delivery unit, which is designed for example as a flow pump and increases the pressure in the fuel line to the required value, or it is used a more powerful and therefore more expensive delivery unit.
  • the invention provides for the at least one fuel injector 1 to arrange an electromagnetic pressure booster 5 for increasing the pressure.
  • at least one pressure booster 5 is provided on each fuel injection valve 1.
  • the at least one electromagnetic pressure booster 5 is connected directly upstream of the at least one fuel injection valve 1 and, for example, plugged, clipped, welded, pressed or the like onto an input channel 8 of the fuel injection valve 1. In this way, the electromagnetic pressure booster 5 is firmly connected to the fuel injection valve 1 and disposed directly on this.
  • the pressure of the fuel is not already increased in the fuel line 2, as in the prior art, but by means of the electromagnetic pressure booster 5 just before and / or in the fuel injection valve 1.
  • the volume within the fuel injection valve 1 is much smaller than the volume of the fuel line 2 from the reservoir 2 to the fuel injection valve 1, so much less energy is needed to increase the pressure.
  • the pressure increase in the fuel injection valve 1 is achieved faster by means of the electromagnetic pressure booster 5 than by means disposed in the fuel line 2, with respect to the flow connection further away from the fuel injection valve 1 conveying unit. 3
  • Fig.2 shows a first embodiment of the electromagnetic pressure booster.
  • the electromagnetic pressure booster 5 is a redesigned electromagnetic injection valve, which is configured as described below, for example.
  • the electromagnetic pressure booster 5 has a housing 9, in which an electromagnet 7 with an exciter coil 10 and an axially movable armature 11 is arranged.
  • a pressure chamber 14 is provided in which a piston 15 operated by the electromagnet 7 is movable axially with respect to an axis 12 is arranged.
  • the armature 11, the piston 15 and / or the excitation coil 10 are, for example, arranged centrally with respect to the axis 12.
  • the armature 11 is annular over a part of its axial length surrounded by the exciter coil 10, which is arranged in a magnet pot 13.
  • An inlet channel 16 opens via an inlet opening 17 into the pressure chamber 14 of the pressure intensifier 5, for example at the periphery of the pressure chamber 14.
  • the inlet channel 16 is flow-connected upstream with the fuel line.
  • the pressure chamber 14 of the electromagnetic pressure booster 5 is flow-connected to the fuel injection valve 1 via an outlet 18.
  • the piston 15 of the electromagnetic pressure booster 5 is mechanically coupled to the armature 11 1 and connected thereto.
  • the piston 15 is moved by means of a return spring 21 into a first position, in which the piston 15 abuts, for example, against a stop 22 and in which the inlet opening 17 is opened into the pressure chamber 14.
  • the piston 15 is in this first position and thus enables emergency operation.
  • the armature 11 performs an axial stroke with the piston 15, for example in the direction of the fuel injection valve 1.
  • the piston 15 covers the inlet opening 17 after a first partial stroke and in this way closes the flow connection to the inlet channel 16.
  • the inlet opening 17 can also be closed in any other way, for example by a separate valve in the inlet channel 16.
  • the further partial stroke of the piston 15 generates a pressure increase in the pressure chamber 14 and in the flow-connected to the outlet 18 of the electromagnetic pressure booster 5 part of the fuel injection valve 1, since the fuel injection valve 1 is closed at this time and the piston 15 therefore acts on a closed fluid volume.
  • the pressure booster 5 causes in this way shortly before the opening of the fuel injection valve 1, a pressure increase of the fuel.
  • the fuel injection valve 1 opens after reaching a predetermined pressure increase, at least part of the fuel pressure-increased by the electromagnetic pressure booster 5 is injected into the combustion chamber or into the intake manifold of the internal combustion engine.
  • the predetermined pressure increase is dependent on the respective operating state of the internal combustion engine and is in each case from parameters the engine controller calculates to open the fuel injector at an optimal time.
  • the housing 9 in the region of the coil 10 on a vent hole 30 to ensure pressure equalization.
  • the excitation coil 10 is de-energized, so that the piston 15 of the electromagnetic pressure booster 5 is moved by the force of the return spring 21 on the piston 15, starting from a second position back to the first position .becomes.
  • the inlet port 17 since the inlet port 17 is opened again, liquid flows from the inlet port 16 into the pressure chamber 14 and into the fuel injector 1 downstream of the outlet 18 of the electromagnetic pressure intensifier 5, replacing the amount of fuel injected at the last injection.
  • Figure 3 shows a second embodiment of the electromagnetic pressure booster.
  • the second embodiment of the electromagnetic pressure booster differs from the first embodiment in that the inlet channel 16 is closed not by the piston 15, but by an interaction of the armature 11 with the piston 15 and that seen in the axial direction between the coil 10 and the Pressure chamber 14, an antechamber 23 is provided.
  • the inlet channel 16 does not open into the pressure chamber 14, as in the first embodiment, but into the antechamber 23.
  • the armature 11 and the piston 15 are not integrally connected to each other in the second embodiment, but executed as separate parts, at least in sections in the axial direction relative are arranged to move each other.
  • a first return spring 21.1 is provided, which is supported with its one end on the piston 15 and with its other end restoring to the Anchor 11 acts.
  • a second return spring 21.2 is arranged, which is supported with its one end on the housing 9 and with its other end resetting acts on the piston 15.
  • the first return spring 21.1 is made softer than the second return spring 21.2.
  • the inlet channel 16 is partially formed in the armature 11 and via at least one provided at anchor 11 inlet opening 17 centrally with respect to the axis 12 in the antechamber 23.
  • the inlet opening 17 but also at the periphery of the prechamber 23 and the inlet channel 16 is not in the anchor 11, but be provided separately or on the housing 9.
  • the armature 11, the piston 15 and / or the coil 10 are, for example, arranged centrally with respect to the axis 12.
  • the armature 11 has at its end facing the piston 15 a closing section 24, which is formed, for example, spherically.
  • the pre-chamber 23 is connected via a connection opening 25 with the pressure chamber 14.
  • the piston 15 has a centrally arranged with respect to the axis 12 of the pressure chamber inlet 28, which has a beispeilweise conical valve seat 29 at the end facing the pre-chamber 23.
  • the valve seat 29 of the piston 15 acts after a predetermined axial stroke of the armature 11 with the closing portion 24 of the armature 11 together and opens or closes the flow connection between the prechamber 23 and the pressure chamber fourteenth
  • the piston 15 When energized exciter coil 10, the piston 15 is in the first position on the stop 22, wherein the armature 11 and the piston 15 are axially spaced from each other. As a result, when the field coil 10 is not energized, there is a flow connection from the pre-chamber 23 via the connection opening 25 and the pressure chamber inlet 28 of the piston 15 into the pressure chamber 14, which serves to fill the pressure chamber 14 and the fuel injection valve 1.
  • the armature 11 initially performs an axial stroke, for example in the direction of the fuel injection valve 1. After a first partial stroke of the armature 11, the armature 11 strikes with its closing section 24 against the valve seat 29 of the piston 15 and closes this way the pressure chamber inlet 28. After this first partial stroke of the armature 11, the armature 11 moves the piston 15, so that the armature 11 and the piston 15 during the subsequent partial stroke of the armature 11 to execute a common hub.
  • the excitation coil 10 is de-energized, so that the piston 15 and the armature 11 by the Krafteinwirkuzng the second return spring 21.2 perform a common return stroke back toward the stopper 22.
  • the armature 11 carries out by the force of the first return spring 21.1 alone a further return stroke.
  • the pressure chamber inlet 28 is opened again, so that liquid flows from the inlet channel 16 and / or the pre-chamber 23 in the pressure chamber 14 and the fuel injection valve 1 downstream of the outlet 18 of the electromagnetic pressure booster 5 and thereby the Fuel injected at the last injection is replaced.

Landscapes

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

Abstract

Des dispositifs d'injection de carburant pourvus d'au moins un injecteur de carburant sont déjà connus. Cet injecteur de carburant comprend un piston amplificateur qui amplifie la pression du fluide amené à l'injecteur de carburant à une valeur supérieure, par conversion hydraulique de pression, à partir d'une pression de rampe. L'inconvénient est que ce type d'amplification de pression est très coûteux et compliqué. Avec le dispositif selon l'invention, l'amplification de pression est simplifiée et plus économique. Selon ladite invention, au moins un amplificateur de pression électromagnétique (5) est placé sur au moins un injecteur de carburant (1).

Claims (9)

  1. Dispositif d'injection de carburant comprenant au moins une soupape d'injection de carburant (1) et au moins un surpresseur, caractérisé en ce que le surpresseur est un surpresseur électromagnétique et la soupape d'injection de carburant a un entraînement électromagnétique, piézoélectrique ou magnétostrictif.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'au moins un surpresseur électromagnétique (5) est monté immédiatement avant l'au moins une soupape d'injection de carburant (1).
  3. Dispositif selon la revendication 1, caractérisé en ce que le surpresseur électromagnétique (5) est enfiché, enclipsé, soudé ou pressé sur un canal d'entrée (8) de la soupape d'injection de carburant (1).
  4. Dispositif selon la revendication 1, caractérisé en ce que le surpresseur électromagnétique (5) est connecté fluidiquement par une conduite de carburant (2).
  5. Dispositif selon la revendication 1, caractérisé en ce que le surpresseur électromagnétique (5) présente un électroaimant (7) avec une bobine excitatrice (10) et un induit (11), l'induit (11) étant connecté fonctionnellement à un piston (15) monté de manière déplaçable axialement dans une chambre de pression (14) du surpresseur électromagnétique (5).
  6. Dispositif selon la revendication 5, caractérisé en ce que le surpresseur électromagnétique (5) présente un canal d'admission (16) qui débouche par le biais d'une ouverture d'admission (17) dans la chambre de pression (14).
  7. Dispositif selon la revendication 6, caractérisé en ce que la chambre de pression (14) présente une sortie (18) qui est connectée fluidiquement à un canal d'entrée (8) de la soupape d'injection de carburant (1).
  8. Dispositif selon la revendication 7, caractérisé en ce que la connexion fluidique du canal d'admission (16) dans la chambre de pression (14) peut être fermée et une augmentation de pression dans la chambre de pression (14) et en aval de la sortie (18) de la chambre de pression (14) peut être obtenue au moyen d'une course axiale du piston (15).
  9. Dispositif selon la revendication 8, caractérisé en ce que la connexion fluidique du canal d'admission (16) dans la chambre de pression (14) peut être fermée au moyen d'une soupape séparée dans le canal d'admission (16), au moyen du piston (15) ou par une coopération du piston (15) avec l'induit (11).
EP06708414A 2005-03-16 2006-02-21 Dispositif d'injection de carburant Not-in-force EP1861617B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005012068 2005-03-16
DE102006003484A DE102006003484A1 (de) 2005-03-16 2006-01-25 Vorrichtung zum Einspritzen von Kraftstoff
PCT/EP2006/060134 WO2006097398A1 (fr) 2005-03-16 2006-02-21 Dispositif d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1861617A1 EP1861617A1 (fr) 2007-12-05
EP1861617B1 true EP1861617B1 (fr) 2009-07-15

Family

ID=36216921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06708414A Not-in-force EP1861617B1 (fr) 2005-03-16 2006-02-21 Dispositif d'injection de carburant

Country Status (5)

Country Link
US (1) US20090020101A1 (fr)
EP (1) EP1861617B1 (fr)
JP (1) JP4728389B2 (fr)
DE (2) DE102006003484A1 (fr)
WO (1) WO2006097398A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7721716B1 (en) 2008-07-16 2010-05-25 Harwood Michael R High pressure piezoelectric fuel injector
JP2010174865A (ja) * 2009-02-02 2010-08-12 Denso Corp 液体噴射供給装置の制御方法
JP5104772B2 (ja) * 2009-02-02 2012-12-19 株式会社デンソー 液体噴射供給装置
US9284930B2 (en) 2011-06-03 2016-03-15 Michael R. Harwood High pressure piezoelectric fuel injector
DE102011078068A1 (de) * 2011-06-24 2012-12-27 Robert Bosch Gmbh Vorrichtung zum Einspritzen von Fluid
US11958706B2 (en) 2014-12-15 2024-04-16 The Procter & Gamble Company Non-uniform tail sealing and methods thereof

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PH25880A (en) * 1983-08-05 1991-12-02 Orbital Eng Pty Fuel injection method and apparatus
GB8705783D0 (en) * 1987-03-11 1987-04-15 Lucas Ind Plc Fuel pumping apparatus
JPH01166266A (ja) * 1987-12-23 1989-06-30 Toshiba Corp パターン認識による電子部品の位置合せ装置
US5035221A (en) * 1989-01-11 1991-07-30 Martin Tiby M High pressure electronic common-rail fuel injection system for diesel engines
JPH03107568A (ja) * 1989-09-22 1991-05-07 Aisin Seiki Co Ltd 燃料噴射装置
DE4106015A1 (de) * 1991-02-26 1992-08-27 Ficht Gmbh Druckstoss-kraftstoffeinspritzung fuer verbrennungsmotoren
EP0725215B1 (fr) * 1992-03-04 1998-08-05 Ficht GmbH & Co. KG Dispositif d'injection de combustible suivant le principe de l'accumulateur d'énergie solide, pour moteurs à combustion interne
US6257499B1 (en) * 1994-06-06 2001-07-10 Oded E. Sturman High speed fuel injector
US6161770A (en) * 1994-06-06 2000-12-19 Sturman; Oded E. Hydraulically driven springless fuel injector
JPH08200180A (ja) * 1995-01-27 1996-08-06 Nissan Motor Co Ltd 燃料噴射装置
DE19515782A1 (de) * 1995-04-28 1996-10-31 Ficht Gmbh Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen
JPH10213041A (ja) * 1997-01-31 1998-08-11 Yamaha Motor Co Ltd 内燃機関用液体噴射装置
US5890662A (en) * 1997-11-10 1999-04-06 Outboard Marine Corporation Solenoid with variable magnetic path
US6119960A (en) * 1998-05-07 2000-09-19 Caterpillar Inc. Solenoid actuated valve and fuel injector using same
DE19835494C2 (de) * 1998-08-06 2000-06-21 Bosch Gmbh Robert Pumpe-Düse-Einheit
DE19910970A1 (de) * 1999-03-12 2000-09-28 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
US6253736B1 (en) * 1999-08-10 2001-07-03 Cummins Engine Company, Inc. Fuel injector nozzle assembly with feedback control
JP3911930B2 (ja) * 1999-10-28 2007-05-09 株式会社デンソー 燃焼圧センサ付きグロープラグ
JP2001132579A (ja) * 1999-11-02 2001-05-15 Nissan Motor Co Ltd 内燃機関のユニットインジェクタ及び燃料噴射制御装置
GB0005744D0 (en) * 2000-03-10 2000-05-03 Federal Mogul Ignition Uk Ltd Fuel injector
DE10014451A1 (de) * 2000-03-23 2001-09-27 Bosch Gmbh Robert Verfahren und Vorrichtung zur Formung des Einspritzdruckverlaufs an Injektoren
US6295972B1 (en) * 2000-03-30 2001-10-02 Bombardier Motor Corporation Of America Fuel delivery using multiple fluid delivery assemblies per combustion chamber
WO2002012708A1 (fr) * 2000-08-02 2002-02-14 Mikuni Corporation Injecteur de carburant a commande electronique
JP4431268B2 (ja) * 2000-11-17 2010-03-10 株式会社ミクニ 電子制御燃料噴射装置
CN1133810C (zh) * 2001-02-16 2004-01-07 郗大光 电动燃油喷射装置
DE10117401C2 (de) * 2001-04-06 2003-02-27 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzsystem für eine Brennkraftmaschine
DE60210306T2 (de) * 2001-09-06 2006-11-30 Invensys Sensor Systems Druckregelventil mit einstellmerkmalen
DE10145622B4 (de) * 2001-09-15 2009-09-10 Robert Bosch Gmbh Ventil zum Steuern von Flüssigkeiten
US6792921B2 (en) * 2001-12-17 2004-09-21 Caterpillar Inc Electronically-controlled fuel injector
US6910644B2 (en) * 2001-12-26 2005-06-28 Toyota Jidosha Kabushiki Kaisha Solenoid-operated fuel injection valve
US7032574B2 (en) * 2003-03-24 2006-04-25 Sturman Industries, Inc. Multi-stage intensifiers adapted for pressurized fluid injectors
US20050034707A1 (en) * 2003-08-12 2005-02-17 Ulrich Augustin Control valve for fuel injector and method of use
US7240856B2 (en) * 2003-10-24 2007-07-10 Keihin Corporation Fuel injection control device
JP3997983B2 (ja) * 2003-11-10 2007-10-24 株式会社デンソー 圧電素子駆動による３方向切替弁およびその３方向切替弁を用いた燃料噴射弁
US6978770B2 (en) * 2004-05-12 2005-12-27 Cummins Inc. Piezoelectric fuel injection system with rate shape control and method of controlling same
ES2273197T3 (es) * 2004-06-30 2007-05-01 C.R.F. Societa Consortile Per Azioni Inyector de combustible con valvula de control por equilibrio de fuerzas.

Also Published As

Publication number Publication date
JP4728389B2 (ja) 2011-07-20
DE102006003484A1 (de) 2006-09-21
JP2008533376A (ja) 2008-08-21
DE502006004232D1 (de) 2009-08-27
EP1861617A1 (fr) 2007-12-05
WO2006097398A1 (fr) 2006-09-21
US20090020101A1 (en) 2009-01-22

Similar Documents

Publication Publication Date Title
DE19832287A1 (de) Nadelgesteuerte Kraftstoffinjektoreinheit
DE4422552C1 (de) Verfahren zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine
EP1203151B1 (fr) Electrovanne bietagee destinee a un injecteur d'un moteur a combustion
WO2016015912A1 (fr) Pompe à haute pression
EP0603616A1 (fr) Soupape d'injection de combustible
DE112009001971T5 (de) Rückschlagventil mit separater kugelförmiger Federführung
WO2009092658A1 (fr) Dispositif d'injection compact de conception simple
DE102016220326A1 (de) Ventil zum Zumessen eines gasförmigen oder flüssigen Kraftstoffs
EP1861617B1 (fr) Dispositif d'injection de carburant
EP1321663A2 (fr) Dispositif d'injection de combustible pour moteur à combustion interne
DE112020003215T5 (de) Elektromagnetisches Einlassventil und Hochdruckkraftstoffversorgungspumpe
EP2310662A1 (fr) Injecteur de combustible
WO2000011339A1 (fr) Unite servant a commander l'etablissement de la pression dans une unite de pompage
WO2009141182A1 (fr) Injecteur de carburant
DE10149412C1 (de) Vorrichtung zum Dämpfen von Druckpulsationen in einem Fluidsystem, insbesondere in einem Kraftstoffsystem einer Brennkraftmaschine, sowie Verfahren zum Betreiben einer Brennkraftmaschine
WO2009130068A1 (fr) Dispositif compact d'injection avec actionneur pneumatique à induit plat
WO1991018200A1 (fr) Pompe d'injection de carburant pour moteurs a combustion interne
DE102008043839A1 (de) Hochdruckpumpe
DE102021203917A1 (de) Elektromagnetische Aktuatorvorrichtung für ein Ventil einer Kraftstoffpumpe
WO2010012315A1 (fr) Dispositif compact d'injection
DE102009046091A1 (de) Kompakte Einspritzvorrichtung mit reduziertem Druckabfall
EP2136067A1 (fr) Injecteur de carburant
DE102009003081A1 (de) Kompakte Einspritzvorrichtung mit nach innen öffnendem Injektor
DE102008007203A1 (de) Kompakte Einspritzvorrichtung mit druckgesteuerter Düse
DE2203508A1 (de) Elektromagnetisch gesteuerte kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen

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: 20071016

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 IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20080519

DAX Request for extension of the european patent (deleted)
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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502006004232

Country of ref document: DE

Date of ref document: 20090827

Kind code of ref document: P

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

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: 20090715

Ref country code: IS

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: 20091115

Ref country code: ES

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: 20091026

Ref country code: FI

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: 20090715

Ref country code: SE

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: 20090715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: LV

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: 20090715

Ref country code: NL

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: 20090715

Ref country code: SI

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: 20090715

Ref country code: PL

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: 20090715

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

Ref country code: BG

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: 20091015

Ref country code: PT

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: 20091115

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

Ref country code: RO

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: 20090715

Ref country code: EE

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: 20090715

Ref country code: DK

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: 20090715

Ref country code: CZ

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: 20090715

Ref country code: IE

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: 20090715

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: SK

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: 20090715

26N No opposition filed

Effective date: 20100416

BERE Be: lapsed

Owner name: ROBERT BOSCH G.M.B.H.

Effective date: 20100228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20100221

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

Ref country code: CH

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

Effective date: 20100228

Ref country code: GR

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: 20091016

Ref country code: LI

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

Effective date: 20100228

Ref country code: MC

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

Effective date: 20100301

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: 20100901

Ref country code: BE

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

Effective date: 20100228

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: 20100221

RBV Designated contracting states (corrected)

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: PK

Free format text: DIE BENENNUNG CH/LI WURDE ZURUECKGENOMMEN

RBV Designated contracting states (corrected)

Designated state(s): DE FR IT

REG Reference to a national code

Ref country code: NL

Ref legal event code: XEP

Effective date: 20110811

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

Ref country code: FR

Payment date: 20120228

Year of fee payment: 7

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

Ref country code: IT

Payment date: 20120223

Year of fee payment: 7

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

Ref country code: CY

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: 20090715

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

Ref country code: HU

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: 20100116

Ref country code: LU

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

Effective date: 20100221

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 436645

Country of ref document: AT

Kind code of ref document: T

Effective date: 20110221

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

Ref country code: AT

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

Effective date: 20110221

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20131031

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: 20130221

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: 20130228