EP1636487B1 - Soupape de reglage de pression pour systeme d'injection de carburant a accumulateur - Google Patents

Soupape de reglage de pression pour systeme d'injection de carburant a accumulateur Download PDF

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Publication number
EP1636487B1
EP1636487B1 EP04724534A EP04724534A EP1636487B1 EP 1636487 B1 EP1636487 B1 EP 1636487B1 EP 04724534 A EP04724534 A EP 04724534A EP 04724534 A EP04724534 A EP 04724534A EP 1636487 B1 EP1636487 B1 EP 1636487B1
Authority
EP
European Patent Office
Prior art keywords
accumulator
control valve
fuel
valve
pressure
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 - Fee Related
Application number
EP04724534A
Other languages
German (de)
English (en)
Other versions
EP1636487A1 (fr
Inventor
Christian Braeuer
Stefan Holl
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 EP1636487A1 publication Critical patent/EP1636487A1/fr
Application granted granted Critical
Publication of EP1636487B1 publication Critical patent/EP1636487B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • 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
    • F02M63/005—Pressure relief valves
    • F02M63/0052—Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/026—Means for reducing the pressure in common rails at power off
    • 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
    • F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for

Definitions

  • the invention relates to a storage fuel injection system with a closed fuel reservoir and a pressure control valve according to the preamble of claim 1.
  • a storage fuel injection system with a fuel storage and a pressure regulating valve is characterized by the US-B1-6,349,703 known.
  • the pressure control valve which serves to regulate the pressure in a closed fuel reservoir, has a valve body in which a piston-shaped valve member is disposed axially displaceably in a bore.
  • the valve member forms an armature of an electromagnet which can be energized and by the magnetic force of the valve member is pressed against a valve seat. Rectified to this magnetic force, the valve member is also acted upon by a compression spring.
  • this pressure spring secures the seal between valve member and valve seat, so that in the storage fuel injection system, a fuel filling is maintained and a restart of this storage fuel injection system having engine is made possible.
  • the object of the invention is to simplify the storage fuel injection system without functional disadvantages.
  • a longitudinal section through a pressure control valve 1 is shown.
  • the storage fuel injection system which is also referred to as common-rail injection system, has a high-pressure pump 2 through which fuel is conveyed under high pressure from a fuel storage tank 3 into a fuel storage 4.
  • the fuel storage 4 is for example tubular, designed as a so-called rail. From the fuel reservoir 4 lead lines 5 to the injection points of an internal combustion engine 6, in each of which a valve 7 is arranged.
  • the pressure regulating valve 1 is provided, which can be arranged at the outlet of the high-pressure pump 2 or the fuel reservoir 4.
  • the pressure control valve 1 itself has a valve 8, in which a bore 9 is formed, in which a piston-shaped valve member 10 is arranged axially displaceable.
  • a mounting flange 11 is formed, via which the valve body is attached to the high pressure pump 2 or the fuel reservoir 4.
  • a further space is provided within the valve body 8, in which an electromagnet 12 is arranged with a coil winding.
  • a connection element 13 is provided, which covers the space of the valve body.
  • valve member 10 If the solenoid 12 is not energized, the valve member 10 is due to its own weight on the valve seat 16 and the valve seat 16 is acted upon by the pressure in the fuel reservoir 4. Due to the dead weight of the valve member 10 creates a force that is greater than that generated by the fuel tank 4, so that the valve is closed.
  • fuel flows through the valve seat 16, for example, into a relief space, here a fuel storage tank 3.
  • the electromagnet 12 When the pressure in the fuel accumulator 4 is to be increased, the electromagnet 12 is energized, so that the valve seat 16 remains closed even at elevated pressure.

Abstract

L'invention concerne une soupape de réglage de pression pour un système d'injection de carburant à accumulateur dans un moteur à combustion interne, cette soupape réglant la pression dans un accumulateur de carburant (4) (rampe commune). L'invention vise à concevoir une soupape de réglage de pression (1) simplifiée. A cet effet, l'accumulateur de carburant (4) est un accumulateur fermé, et ses conduites d'arrivée et de retour sont disposées dans un niveau de liquide tel que, sans pression supplémentaire, l'accumulateur de carburant (1) ne peut pas avoir de fuite.

Claims (1)

  1. Système d'injection de carburant à accumulateur, comportant un accumulateur de carburant (4), fermé et une soupape de régulation de pression pour réguler la pression dans l'accumulateur de carburant (4), la soupape de régulation de pression ayant un organe de soupape (10) en forme de piston, guidé en coulissement axial dans un alésage (9), cet organe de soupape formant l'induit d'un électroaimant (12) qui peut être alimenté et dont la force magnétique presse l'organe de soupape (10) contre un siège de soupape (16),
    caractérisé par
    une conduite d'alimentation et de retour de l'accumulateur de carburant (4) qui se trouve sous la niveau de liquide formé par la position de la soupape de régulation de pression (1) et lorsque l'électroaimant (12) n'est pas alimenté, l'organe de soupape (10) s'appuie sur le siège de soupape (16) uniquement par son propre poids.
EP04724534A 2003-05-16 2004-03-31 Soupape de reglage de pression pour systeme d'injection de carburant a accumulateur Expired - Fee Related EP1636487B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10322127A DE10322127A1 (de) 2003-05-16 2003-05-16 Druckregelventil für ein Speicherkraftstoffeinspritzsystem
PCT/DE2004/000659 WO2004104405A1 (fr) 2003-05-16 2004-03-31 Soupape de reglage de pression pour systeme d'injection de carburant a accumulateur

Publications (2)

Publication Number Publication Date
EP1636487A1 EP1636487A1 (fr) 2006-03-22
EP1636487B1 true EP1636487B1 (fr) 2008-01-30

Family

ID=33394679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04724534A Expired - Fee Related EP1636487B1 (fr) 2003-05-16 2004-03-31 Soupape de reglage de pression pour systeme d'injection de carburant a accumulateur

Country Status (5)

Country Link
US (1) US20060272617A1 (fr)
EP (1) EP1636487B1 (fr)
JP (1) JP2007502386A (fr)
DE (2) DE10322127A1 (fr)
WO (1) WO2004104405A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062176A1 (de) * 2007-12-21 2009-06-25 Robert Bosch Gmbh Druckregelventil zur Regelung des Drucks in einem Hochdruck-Kraftstoffspeicher

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751403A1 (de) * 1968-05-24 1971-02-18 Porsche Kg Kraftstoff-Einspritzvorrichtung
US4180022A (en) * 1977-10-31 1979-12-25 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
DE3132432A1 (de) * 1981-08-17 1983-02-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage
US4406129A (en) * 1981-12-11 1983-09-27 Beech Aircraft Corporation Saturated cryogenic fuel system
DE3342582C2 (de) * 1983-11-25 1986-02-13 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Verfahren und Vorrichtung zum Betreiben eines Wasserstoffmotors
JPH10196482A (ja) * 1997-01-16 1998-07-28 Isuzu Motors Ltd ディーゼル機関の燃料噴射装置
IT1308779B1 (it) * 1999-07-02 2002-01-10 Elasis Sistema Ricerca Fiat Dispositivo di regolazione della pressione di mandata di una pompa,adesempio per l'alimentazione di combustibile ad un motore a combustione
DE19949814A1 (de) * 1999-10-15 2001-04-19 Bosch Gmbh Robert Druckregelventil für ein Speicherkraftstoffeinspritzsystem für Brennkraftmaschinen
DE10016242B4 (de) * 2000-03-31 2006-04-13 Siemens Ag Druckregelventil mit integrierter Sicherheitsfunktion
CA2362844C (fr) * 2001-11-30 2004-08-31 Westport Research Inc. Methode et appareil de livraison de gaz a haute pression d'une cuve de stockage cryogenique

Also Published As

Publication number Publication date
JP2007502386A (ja) 2007-02-08
US20060272617A1 (en) 2006-12-07
DE502004006107D1 (de) 2008-03-20
DE10322127A1 (de) 2004-12-02
WO2004104405A1 (fr) 2004-12-02
EP1636487A1 (fr) 2006-03-22

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