EP1373716A1 - Distributeur 3/2 - Google Patents

Distributeur 3/2

Info

Publication number
EP1373716A1
EP1373716A1 EP02727233A EP02727233A EP1373716A1 EP 1373716 A1 EP1373716 A1 EP 1373716A1 EP 02727233 A EP02727233 A EP 02727233A EP 02727233 A EP02727233 A EP 02727233A EP 1373716 A1 EP1373716 A1 EP 1373716A1
Authority
EP
European Patent Office
Prior art keywords
control piston
control
connection
way valve
fuel
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.)
Withdrawn
Application number
EP02727233A
Other languages
German (de)
English (en)
Inventor
Achim Brenk
Wolfgang Klenk
Uwe Gordon
Manfred Mack
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 EP1373716A1 publication Critical patent/EP1373716A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid 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
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel 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
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/0045—Three-way valves
    • 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
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements

Definitions

  • the invention relates to a 3/2-way valve for controlling the injection of fuel in a common rail.
  • L5 injection system of an internal combustion engine with a control element guided in a housing, the control element in a first switching position enabling a hydraulic connection between an injector and a fuel return line, and wherein the control element in a second
  • Such a 3/2 way valve is, for example. known from DE 197 24 637 AI. Promotes in common rail injection systems
  • High-pressure accumulator which is referred to as a common rail. High-pressure lines lead from the rail to the individual injectors, which are assigned to the engine cylinders. The injectors are made individually by the engine electronics
  • control valve 10 controlled.
  • high-pressure fuel passes the nozzle needle, which is lifted against the biasing force of a nozzle spring, and into the combustion chamber.
  • the object of the invention is to improve the function and the quality of the injection.
  • the control valve according to the invention should be simple and inexpensive to manufacture.
  • the task is in a 3/2-way valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, with a control member guided in a housing, the control member in a first switching position a hydraulic connection between an injector and a Kra frees fuel return, and wherein the control member in a second switching position a hydraulic . Releases connection between the injector and a high-pressure fuel accumulator, solved in that the control member a first
  • Control piston and a second control piston comprises that a first valve seat is formed between the housing and the first control piston, and that a second valve seat is formed between the housing and the second control piston.
  • the metering or discharge cross sections to be controlled can be freely designed within wide limits, so that short control times can be realized with the 3/2-way metering valve according to the invention.
  • Functional reliability is also increased by using two control pistons.
  • the use of two control pistons also simplifies the manufacture of the metering valve according to the invention, since the guides for the two control pistons can be arranged on one and the same axis or on different axes.
  • the control piston can be guided through a guide bore in the valve housing, the guide bore can also be designed as a stepped bore.
  • an end face of the first control piston delimits a control chamber, that the control chamber is hydraulically connected to the fuel inlet via an inlet throttle, and that the control chamber can be hydraulically connected to an outlet via an outlet throttle, so that at least partially known and proven construction elements can be used in the implementation of the metering valve according to the invention.
  • the hydraulic connection between the control chamber and the outlet is controlled by a solenoid valve or a piezo actuator, so that their specific advantages can also be used in the metering valve according to the invention.
  • the inlet throttle can be integrated in the first control piston to save installation space and simplify production.
  • an additional connection to the high-pressure fuel accumulator must be provided in the valve housing of the 3/2 way valve.
  • Front of the second control piston has a pressure chamber in which the pressure of the high-pressure fuel reservoir prevails, so that the second control piston is always pressed in the direction of the first control piston.
  • the second control piston is at least partially pressure balanced.
  • the second control piston can also be pressed in the direction of the first control piston by a compression spring.
  • the first control piston in one Guide bore is guided that the connection opens into the guide bore, that the first control piston has a first recess in the area of the mouth of the connection and / or that the second control piston is guided in a guide bore, that the connection opens into the guide bore, that the second control piston has a second recess in the area of the mouth of the connection, so that an at least partial force compensation of the first and / or second control piston is produced. This reduces the operating forces of the
  • the guide bore 39 can also be designed as a stepped bore.
  • the metering valve according to the invention can also be used in other. Pressure-controlled fuel injection systems.
  • the protection sought with the present patent application is also intended to include these uses.
  • Figure 1 is a schematic representation of a common rail injection system
  • Figure 2 shows a first embodiment of a 3/2 way valve according to the invention with two-part control piston in the first switching position;
  • FIG. 3 shows the 3/2-way valve from Figure 2 in the second
  • Figure 4 shows a second embodiment of a 3/2 way valve according to the invention in the first switching position
  • Figure 5 shows the 3/2-way valve from Figure 4 in the second switching division
  • a common rail injection system is shown schematically in FIG.
  • Fuel is conveyed from a fuel tank 1 into a fuel high-pressure accumulator 3 by means of a pump unit 2 and high pressure is applied to it.
  • the fuel pressurized with high pressure is then allocated to the individual cylinders of the internal combustion engine to be supplied as required.
  • the high-pressure fuel is injected by injectors 4, 5, 6 and 7.
  • the injector 7 is supplied with fuel via a metering valve 8.
  • the metering valve 8 can, regardless of the selected one
  • Embodiment be designed as an independent assembly. This makes it possible to install the valve as desired between the high-pressure fuel reservoir and a nozzle holder, which means that there is a free choice of line lengths between the high-pressure fuel reservoir and metering valve and between the metering valve and nozzle holder.
  • the metering valve 8 is a 3/2-way valve that is actuated electromagnetically. In the switch position shown in FIG. 1, the connection between the high-pressure fuel reservoir 3 and a high-pressure connection 10 of the injector 7 is interrupted.
  • the high pressure connection 10 of the injector 7 is connected to a fuel return 9 in the switching position of the metering valve 8 shown in FIG.
  • FIGS. 2 and 3 show a 3/2 directional control valve designed as a seat-seat valve.
  • the metering valve shown in longitudinal section in FIGS. 2 and 3 comprises a valve housing 20, in which a first control piston 21 and a second control piston 22 are accommodated so that they can be moved back and forth.
  • FIGS. 2 and 3 show a first exemplary embodiment of a 3/2 directional control valve designed as a seat-seat valve.
  • the metering valve shown in Figures 2 and 3 in longitudinal section comprises a valve housing 20 in which a first control piston 21 and a second control piston 22 are reciprocally received.
  • a first valve seat 24 formed between the first control piston 21 and the valve housing 20 is closed.
  • the hydraulic connection between a fuel inlet 26, which in turn is connected to a common rail (not shown), and a connection 27 to an injection nozzle (not shown) or injector is thus interrupted.
  • a second fuel return 33 serves to return the leakage occurring during operation. In this first switch position, the injector (not shown) is depressurized.
  • High-pressure fuel ensures that the first control piston 21 is pressed against the second control piston 22 and into the first valve seat 24.
  • the second control piston 22 is pressed against the first control piston 21 by a hydraulic force which acts on an end face 25 of the second control piston 22.
  • the hydraulic force is caused by the pressure in a pressure chamber 37.
  • the pressure chamber 37 is connected to the fuel inlet 26 via a bore 38.
  • the speed of the movement of the first control piston 21 can be adjusted by designing the areas on the first control piston 21 which are subjected to pressure and by coordinating an inlet throttle 29 and an outlet throttle 31.
  • the second control piston 22 is also moved upward by the hydraulic force described above, so that the second valve seat 30 is closed.
  • the metering valve 8 By designing the metering valve 8 according to the invention as a seat / seat valve, the leakage quantities are reduced, the tightness increases and the controlled flow cross sections are larger than in one. Slide valve. As a result, the injectors can be controlled faster and more precisely, which has an advantageous effect on the operating behavior of the internal combustion engine.
  • the two control pistons 21 and 22 are guided separately. This considerably simplifies the manufacture of the metering valve. In addition, an alignment error from the second control piston 22 to the first control piston 21 does not adversely affect the function of the metering valve 8.
  • the size of the metering and the control cross section can be made as large as desired.
  • the movement speeds of the two control pistons 21 and 22 during operation can be influenced within wide limits by the design of the inlet and outlet throttles 29 and 31.
  • Fuel inlet 26 and the connection 27 is now open; fuel is injected through the injector or the injection nozzle (not shown). At the same time, the connection between the connection 27 and the fuel return 32 is interrupted.
  • FIGS. 4 and 5 show a second exemplary embodiment of a 3/2 directional control valve designed as a seat-seat valve. That in Figures 4 and 5 in longitudinal section.
  • the metering valve shown comprises a valve housing 20 in which a first control piston 21 and a second control piston 22 are accommodated in a guide bore 39 such that they can be moved back and forth.
  • the two control pistons 21 and 22 are each individually balanced due to the design of their pressure surfaces.
  • the force compensation of the first control piston 21 is achieved by a first recess 40 in the first control piston 21 in the region 27a of the connection 27.
  • the force balance of the second control piston 22 is achieved by a second recess 41 in the second
  • Control piston 21 is reached in the area 27b of the connection 27. This means that minimal forces are sufficient to move the corresponding control piston.
  • the second control piston 22 is biased by a compression spring 23.
  • the first control piston 21 bears against the end of the second control piston 22 facing away from the compression spring 23.
  • a first valve seat 24 is formed on the first control piston 21 and the valve housing 20 and is shown closed in FIG. 4.
  • a second fuel return 33 serves to return the leakage occurring during operation. In this first switch position, the injector (not shown) is depressurized.
  • Control room 34 prevented by a valve ball 36.
  • High-pressure fuel enters control chamber 34 via an inlet throttle 29 formed in first control piston 21.
  • the fuel in high-pressure chamber in control chamber 34 ensures that first control piston 21 is pressed downward against second control piston 22.
  • the first valve seat 24 is kept closed.
  • the second control piston 22 is pressed against the compression spring 23.
  • the solenoid valve 35 opens and the valve ball 36 lifts off its associated seat, the pressure in the control chamber 34 drops and the first control piston 21 moves up to a stop 28.
  • the speed of the movement of the first control piston 21 can be adjusted by designing the areas on the first control piston 21 which are subjected to pressure and by coordinating an inlet throttle 29 and an outlet throttle 31. become.
  • All valve surfaces that are in direct connection with the Connection 27 are designed so that they can not exert any force on the control pistons 21 and 22.
  • the forces acting on the control pistons 21 and 22 either originate from the compression spring 23 or are hydraulic forces that occur during the movement phase of the first
  • Control piston 21 and the second control piston 22 have no force jumps or other discontinuities.
  • the manufacture of the metering valve 8 is thus simplified and the operating behavior of the internal combustion engine is improved.
  • the two control pistons 21 and 22 are guided separately. This further simplifies the manufacture of the metering valve. In addition, an alignment error from the second control piston 22 to the first control piston 21 does not adversely affect the function of the metering valve.
  • the size of the metering and control cross section can be made as large as desired.
  • the pressure-balanced control pistons 21 and 22 result in a lower one
  • ⁇ ⁇ -i rr d fD H H- ⁇ CQ ⁇ rt rt ⁇ r ⁇ ü P-. ⁇ ⁇ H rr H rr P. ⁇ P "CQ ⁇ tr? rt

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 distributeur 3/2 pour commander l'injection de carburant dans le système d'injection directe à rampe commune d'un moteur à combustion interne. Ce distributeur comporte une première position de commutation, dans laquelle un injecteur est associé à un retour de carburant, et une deuxième position de commutation, dans laquelle l'injecteur est associé à un accumulateur haute pression. Pour améliorer le fonctionnement et la qualité de l'injection, ce distributeur 3/2 comprend deux pistons de commande (21, 22) à équilibrage de force, guidés séparément, chacun d'eux comportant un bord de siège de soupape (24, 30).
EP02727233A 2001-03-17 2002-03-15 Distributeur 3/2 Withdrawn EP1373716A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10113028A DE10113028A1 (de) 2001-03-17 2001-03-17 3/2-Wegeventil
DE10113028 2001-03-17
PCT/DE2002/000955 WO2002075150A1 (fr) 2001-03-17 2002-03-15 Distributeur 3/2

Publications (1)

Publication Number Publication Date
EP1373716A1 true EP1373716A1 (fr) 2004-01-02

Family

ID=7677923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02727233A Withdrawn EP1373716A1 (fr) 2001-03-17 2002-03-15 Distributeur 3/2

Country Status (6)

Country Link
US (1) US6874476B2 (fr)
EP (1) EP1373716A1 (fr)
JP (1) JP2004518881A (fr)
KR (1) KR20020097283A (fr)
DE (1) DE10113028A1 (fr)
WO (1) WO2002075150A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7451743B2 (en) * 2003-03-04 2008-11-18 Robert Bosch Gmbh Fuel injection system with accumulator fill valve assembly
JP2006257874A (ja) * 2004-04-30 2006-09-28 Denso Corp インジェクタ
EP1793118B1 (fr) * 2005-12-02 2008-04-30 OMT Officine Meccaniche Torino S.p.A. Injecteur pour gros moteurs diesel fonctionnants avec du carburant lourd, contrôlé par une vanne électronique
EP1835171B1 (fr) * 2006-03-15 2008-03-26 Delphi Technologies, Inc. Dispositif de soupape de commande amèlioré
DK177456B1 (en) * 2011-06-27 2013-06-17 Man Diesel & Turbo Deutschland A fuel valve for large turbocharged two stroke diesel engines
CN109973272B (zh) * 2019-05-16 2024-07-12 中船动力研究院有限公司 一种低速柴油机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2145080A5 (fr) * 1971-07-08 1973-02-16 Peugeot & Renault
US3739562A (en) * 1972-02-29 1973-06-19 Raymond Lee Organization Inc Garden tool
DE2742466C2 (de) * 1977-09-21 1986-11-27 Daimler-Benz Ag, 7000 Stuttgart Pumpdüse zur Kraftstoffeinspritzung in eine luftverdichtende Brennkraftmaschine
US4676022A (en) * 1986-03-20 1987-06-30 Wraight Peter D Rotatable insect trap device
DE4445980C2 (de) * 1994-12-22 1999-12-30 Mtu Friedrichshafen Gmbh Einspritzsystem
US5526791A (en) * 1995-06-07 1996-06-18 Diesel Technology Company High-pressure electromagnetic fuel injector
DE19701879A1 (de) * 1997-01-21 1998-07-23 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
DE19724637A1 (de) * 1997-06-11 1998-12-17 Bosch Gmbh Robert Einspritzventil
DE19738397A1 (de) * 1997-09-03 1999-03-18 Bosch Gmbh Robert Kraftstoffeinspritzanlage für eine Brennkraftmaschine
DE19742073A1 (de) * 1997-09-24 1999-03-25 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE29807601U1 (de) * 1998-04-27 1998-08-20 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Hydraulisches Schiebersitzventil
JP2000034963A (ja) * 1998-04-27 2000-02-02 Fev Motorentechnik Gmbh & Co Kg 液圧スライドシ―ト弁
JP2001140726A (ja) * 1998-12-09 2001-05-22 Denso Corp 弁装置およびそれを用いた燃料噴射装置
DE19941709A1 (de) * 1999-09-02 2001-03-15 Bosch Gmbh Robert Gebautes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen
USD484943S1 (en) * 2003-04-07 2004-01-06 Micro Plastics, Inc. Hand-held insect killer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02075150A1 *

Also Published As

Publication number Publication date
WO2002075150A1 (fr) 2002-09-26
US6874476B2 (en) 2005-04-05
US20040134466A1 (en) 2004-07-15
DE10113028A1 (de) 2002-09-26
JP2004518881A (ja) 2004-06-24
KR20020097283A (ko) 2002-12-31

Similar Documents

Publication Publication Date Title
EP0959243B1 (fr) Soupape de commande pour injecteur à combustible
WO1998031933A1 (fr) Dispositif d'injection de carburant pour moteurs a combustion interne
EP2016278B1 (fr) Régulateur de pression avec fonction de circulation de secours et de purge
DE19630938C2 (de) Kraftstoffzuleitung mit einem Volumenstromregelventil und Volumenstromregelventil
WO2001073287A1 (fr) Soupape d'injection a etranglement de derivation
EP1203151B1 (fr) Electrovanne bietagee destinee a un injecteur d'un moteur a combustion
WO2024074257A1 (fr) Dispositif de soupape d'arrêt pour un système d'alimentation en carburant pour alimenter un moteur à combustion interne avec, en particulier, un carburant gazeux, dispositif de régulation de pression pour un tel système d'alimentation en carburant, et système d'alimentation en carburant
DE19823937B4 (de) Servoventil für Kraftstoffeinspritzventil
DE19919432C2 (de) Common Rail Injektor
WO2001014722A1 (fr) Injecteur de structure compacte pour systeme d'injection a rampe commune de moteur a combustion interne
EP1144842B1 (fr) Injecteur pour systeme d'injection de carburant pour moteurs a combustion interne, muni d'un pointeau faisant saillie dans la chambre de commande de soupape
EP1311755B1 (fr) Dispositif d'injection de carburant
EP1373716A1 (fr) Distributeur 3/2
WO2002073028A2 (fr) Soupape a siege/coulisse comportant une tige de compensation de pression
WO2000011339A1 (fr) Unite servant a commander l'etablissement de la pression dans une unite de pompage
EP1425526B1 (fr) Soupape pour reguler le debit de liquides
EP1262659B1 (fr) Système de combustible pour un moteur à combustion interne
EP1356200A1 (fr) Distributeur 3/2
DE19963370C2 (de) Pumpe-Düse-Einheit mit Voreinspritzung
WO2000011340A1 (fr) Unite de commande pour commander la montee en pression dans un ensemble pompe
WO2002042636A1 (fr) Systeme d'injection de carburant
DE10233574B4 (de) Ventil zum Steuern von Flüssigkeiten
DE19946610B4 (de) Kraftstoffeinspritzsystem und Kraftstoffhochdruckpumpe
WO2002002931A1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
WO2024115000A1 (fr) Dispositif de soupape d'arrêt pour système d'alimentation en carburant pour l'alimentation en carburant, en particulier en carburant gazeux, d'un moteur à combustion interne, dispositif de distribution de carburant pour ledit système d'alimentation en carburant, et système d'alimentation en carburant

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: 20031017

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051001