EP1636487B1 - Pressure control valve for a fuel injection system provided with an accumulator - Google Patents

Pressure control valve for a fuel injection system provided with an accumulator 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 - Lifetime
Application number
EP04724534A
Other languages
German (de)
French (fr)
Other versions
EP1636487A1 (en
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1636487A1 publication Critical patent/EP1636487A1/en
Application granted granted Critical
Publication of EP1636487B1 publication Critical patent/EP1636487B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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.

Landscapes

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

Abstract

The invention relates to a pressure control valve for a fuel injection system provided with an accumulator for an internal combustion engine. Said valve is used for controlling pressure in a fuel accumulator (4) (Common rail). The aim of said invention is to design a simplified pressure control valve (1). For this purpose, the fuel accumulator (4) is embodied in the form of a closed accumulator and the inlet and return pipes are mounted at a such liquid level that no outflow from the fuel accumulator is possible unless the pressure control valve is actuated.

Description

Die Erfindung geht aus von einem Speicherkraftstoffeinspritzsystem mit einem geschlossenen Kraftstoffspeicher und einem Druckregelventil nach der Gattung des Anspruchs 1. Ein Speicherkraftstoffeinspritzsystem mit einem Kraftstoffspeicher und einem Druckregelventil ist durch die US-B1-6 349 703 bekannt. Das Druckregelventil, das zur Regelung des Druckes in einem geschlossenen Kraftstoffspeicher dient, weist einen Ventilkörper auf, in dem in einer Bohrung ein kolbenförmiges Ventilglied axial verschiebbar angeordnet ist. Das Ventilglied bildet einen Anker eines Elektromagneten, der bestrombar ist und durch dessen magnetische Kraft das Ventilglied gegen einen Ventilsitz gepresst wird. Gleichgerichtet zu dieser magnetischen Kraft wird das Ventilglied zudem durch eine Druckfeder beaufschlagt.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.

Im stromlosen Zustand des Elektromagneten sichert diese Druckfeder die Dichtung zwischen Ventilglied und Ventilsitz, so dass in dem Speicherkraftstoffeinspritzsystem eine Kraftstofffüllung erhalten bleibt und ein Wiederstart einer dieses Speicherkraftstoffeinspritzsystem aufweisenden Brennkraftmaschine ermöglicht wird.In the de-energized state of the electromagnet, 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.

Ein solchermaßen ausgestaltetes Speicherkraftstoffeinspritzsystem ist in seiner Ausgestaltung aufwendig.An accumulator fuel injection system designed in this way is expensive in its design.

Aufgabe der Erfindung ist es, das Speicherkraftstoffeinspritzsystem ohne Funktionsnachteile zu vereinfachen.The object of the invention is to simplify the storage fuel injection system without functional disadvantages.

Diese Aufgabe wird, ausgehend von einem Speicherkraftstoffeinspritzsystem entsprechend den gattungsgemäßen Merkmalen des Anspruchs durch die kennzeichnenden Merkmalen des Anspruchs gelöst. Bei dieser Ausgestaltung des Speicherkraftstoffeinspritzsystem konnte bei dessen Druckregelventil auf die Bereitstellung einer Druckfeder verzichtet werden. Dadurch ergibt sich der Vorteil, dass das Speicherkraftstoffeinspritzsystem ohne Funktionsverlust kostengünstiger hergestellt werden kann. Insbesondere ist auch hier ein Wiederstart der Brennkraftmaschine aus dem stromlosen Zustand, was dem Stillstand der Brennkraftmaschine entspricht, ermöglicht.This object is achieved on the basis of a storage fuel injection system according to the generic features of the claim by the characterizing features of the claim. In this embodiment of the storage fuel injection system could be dispensed with the provision of a compression spring in the pressure control valve. This results in the advantage that the storage fuel injection system can be produced more cost-effectively without loss of function. In particular, here is a restart of the engine from the de-energized state, which corresponds to the stoppage of the internal combustion engine allows.

Zeichnungdrawing

Es zeigt

Fig. 1
Ein Schnitt durch das erfindungsgemässe Druckregelventil sowie dessen Anordnung in Bezug zu Kraftstoffspeicher und Kraftstofftank.
It shows
Fig. 1
A section through the inventive pressure control valve and its arrangement in relation to fuel storage and fuel tank.

Beschreibung eines AusführungsbeispielsDescription of an embodiment

In Fig. 1 ist ein Längsschnitt durch ein Druckregelventil 1 dargestellt. Zusätzlich ist ein Speicherkraftstoffspeichersystem für Brennkraftmaschinen, insbesondere selbstzündende Brennkraftmaschinen gezeigt. Das Speicherkraftstoffeinspritzsystem, das auch Common-Rail-Einspritzsystem bezeichnet wird, weist eine Hochdruckpumpe 2 auf, durch die Kraftstoff unter Hochdruck aus einem Kraftstoffvorratstank 3 in einen Kraftstoffspeicher 4 gefördert wird. Der Kraftstoffspeicher 4 ist beispielsweise rohrförmig, als sogenanntes Rail ausgebildet. Vom Kraftstoffspeicher 4 führen Leitungen 5 zu den Einspritzstellen einer Brennkraftmaschine 6, in den jeweils ein Ventil 7 angeordnet ist. Zur Einstellung des Drucks im Kraftstoffspeicher 4 ist das Druckregelventil 1 vorgesehen, das am Auslass der Hochdruckpumpe 2 oder am Kraftstoffspeicher 4 angeordnet sein kann.In Fig. 1 a longitudinal section through a pressure control valve 1 is shown. In addition, a storage fuel storage system for internal combustion engines, in particular self-igniting internal combustion engines 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. For adjusting the pressure in the fuel reservoir 4, 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.

Das Druckregelventil 1 selbst weist ein Ventil 8 auf, in dem eine Bohrung 9 ausgebildet ist, in der ein kolbenförmiges Ventilglied 10 axial verschiebbar angeordnet ist. Am Ventilkörper 8 ist ein Befestigungsflansch 11 ausgebildet, über den der Ventilkörper an der Hochdruckpumpe 2 oder am Kraftstoffspeicher 4 befestigt ist. Zusätzlich ist ein weiterer Raum innerhalb des Ventilkörpers 8 vorgesehen, in dem ein Elektromagnet 12 mit einer Spulenwicklung angeordnet ist. Auf dem Ventilkörper 8 ist ein Anschlusselement 13 vorgesehen, das den Raum des Ventilkörpers überdeckt.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. On the valve body 8, a mounting flange 11 is formed, via which the valve body is attached to the high pressure pump 2 or the fuel reservoir 4. In addition, a further space is provided within the valve body 8, in which an electromagnet 12 is arranged with a coil winding. On the valve body 8, a connection element 13 is provided, which covers the space of the valve body.

Funktionsweisefunctionality

Wenn der Elektromagnet 12 nicht bestromt ist, so liegt das Ventilglied 10 aufgrund seines Eigengewichtes auf dem Ventilsitz 16 auf und der Ventilsitz 16 ist von dem Druck in dem Kraftstoffspeicher 4 beaufschlagt. Aufgrund des Eigengewichtes des Ventilglieds 10 entsteht eine Kraft, die grösser ist, als die durch den Kraftstoffspeicher 4 erzeugt, so dass das Ventil geschlossen ist. Bei geöffnetem Druckregelventil 1 strömt aus dem Kraftstoffspeicher 4 Kraftstoff durch den Ventilsitz 16 beispielsweise in einen Entlastungsraum, hier ein Kraftstoffvorratstank 3.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. When the pressure regulating valve 1 is open, fuel flows through the valve seat 16, for example, into a relief space, here a fuel storage tank 3.

Wenn der Druck im Kraftstoffspeicher 4 erhöht werden soll, so wird der Elektromagnet 12 bestromt, so dass der Ventilsitz 16 auch bei erhöhtem Druck geschlossen bleibt.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.

Claims (1)

  1. Accumulator-type fuel injection system comprising a closed fuel accumulator (4) and a pressure-control valve for controlling the pressure in the fuel accumulator (4), with the pressure-control valve having a piston-like valve member (10) which can be axially displaceably guided in a bore (9) and forms an armature of an electromagnet (12) which can be supplied with current and whose magnetic force presses the valve member (10) against a valve seat (16), characterized in that a feed and return line of the fuel accumulator (4) is arranged beneath a liquid level, which is formed by the position of the pressure-control valve (1), and the valve member (10) bears against the valve seat (16) only by virtue of its own weight when the electromagnet (12) is not supplied with current.
EP04724534A 2003-05-16 2004-03-31 Pressure control valve for a fuel injection system provided with an accumulator Expired - Lifetime EP1636487B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10322127A DE10322127A1 (en) 2003-05-16 2003-05-16 Pressure regulating valve for a storage fuel injection system
PCT/DE2004/000659 WO2004104405A1 (en) 2003-05-16 2004-03-31 Pressure control valve for a fuel injection system provided with an accumulator

Publications (2)

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

Family

ID=33394679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04724534A Expired - Lifetime EP1636487B1 (en) 2003-05-16 2004-03-31 Pressure control valve for a fuel injection system provided with an accumulator

Country Status (5)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062176A1 (en) * 2007-12-21 2009-06-25 Robert Bosch Gmbh Pressure control valve for regulating the pressure in a high pressure fuel accumulator

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751403A1 (en) * 1968-05-24 1971-02-18 Porsche Kg Fuel injector
US4180022A (en) * 1977-10-31 1979-12-25 Chrysler Corporation Fuel injection system and control valve for multi-cylinder engines
DE3132432A1 (en) * 1981-08-17 1983-02-24 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION SYSTEM
US4406129A (en) * 1981-12-11 1983-09-27 Beech Aircraft Corporation Saturated cryogenic fuel system
DE3342582C2 (en) * 1983-11-25 1986-02-13 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Method and device for operating a hydrogen engine
JPH10196482A (en) * 1997-01-16 1998-07-28 Isuzu Motors Ltd Fuel injection device of diesel engine
IT1308779B1 (en) * 1999-07-02 2002-01-10 Elasis Sistema Ricerca Fiat DEVICE FOR ADJUSTING THE DELIVERY PRESSURE OF A PUMP, SUITABLE FOR FUEL SUPPLY TO A COMBUSTION ENGINE
DE19949814A1 (en) * 1999-10-15 2001-04-19 Bosch Gmbh Robert Pressure regulating valve for a storage fuel injection system for internal combustion engines
DE10016242B4 (en) * 2000-03-31 2006-04-13 Siemens Ag Pressure control valve with integrated safety function
CA2362844C (en) * 2001-11-30 2004-08-31 Westport Research Inc. Method and apparatus for delivering a high pressure gas from a cryogenic storage tank

Also Published As

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

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