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EP1710429B1 - Valve for control of an injection valve of an internal combustion engine - Google Patents

Valve for control of an injection valve of an internal combustion engine Download PDF

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Publication number
EP1710429B1
EP1710429B1 EP06112227A EP06112227A EP1710429B1 EP 1710429 B1 EP1710429 B1 EP 1710429B1 EP 06112227 A EP06112227 A EP 06112227A EP 06112227 A EP06112227 A EP 06112227A EP 1710429 B1 EP1710429 B1 EP 1710429B1
Authority
EP
European Patent Office
Prior art keywords
valve
free end
piece
bore
guide extension
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
EP06112227A
Other languages
German (de)
French (fr)
Other versions
EP1710429A1 (en
Inventor
Thomas Pauer
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 EP1710429A1 publication Critical patent/EP1710429A1/en
Application granted granted Critical
Publication of EP1710429B1 publication Critical patent/EP1710429B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M63/0012—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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston
    • 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
    • F02M63/0043—Two-way valves

Definitions

  • the invention relates to a valve for controlling an injection valve of an internal combustion engine according to the preamble of independent claim 1.
  • Such a valve is for example by the DE 101 46 743 A1 known.
  • a high-pressure annulus is formed, which is sealed by two sealing points.
  • One of the sealing points is designed as a hard flat seal in which the preload force is applied via a valve piece screw.
  • the other sealing point may be due to Tolerances are not also performed as a hard sealing point, but is sealed by a high-pressure seal and optionally a support ring.
  • the valve according to the invention with the features of the independent claim 1 has the advantage that the high pressure seal and support ring are replaced by a pressure-assisted seal on the valve piece.
  • the self-reinforcing seal increases the sealing force as the system pressure increases.
  • the elimination of high pressure seal and support ring costs are saved, and the risk of incorrect assembly is reduced.
  • FIGURE shows a longitudinal section through the valve according to the invention.
  • the valve 1 shown in the figure is used to control an injection valve of an internal combustion engine and has an annular space 2 , which is connected via a fuel line 3 to a high-pressure fuel storage (CommonRail), not shown.
  • CommonRail high-pressure fuel storage
  • the high-pressure side annular space 2 is formed in a stepped bore 4 of the valve housing 5 by a sleeve-shaped guide projection 6 of a valve member 7 , which sealing with a flange 8 on a shoulder 9 of the bore rests and is sealed at the free end 10 of the guide projection 6 relative to the valve housing 5.
  • the free end 10 of the guide extension 6 is deformable and pushed onto a conical projection 11 of the valve housing 5 by widening a guide bore 12 of the valve member 7.
  • a valve clamping screw 13 By a valve clamping screw 13 , the flange 8 is pressed against the shoulder 9.
  • the valve piece 7 is made of metal or a metal alloy and is not through hardened in the region of its free end 10 and reduced in wall thickness, so that the free end 10 is deformable.
  • the free end 10 of the guide projection 6 is correspondingly formed on the conical projection 11 by pressing, whereby a pressure-assisted seal is realized. If the annular space 2 is subjected to high pressure, the free end 10 of the guide projection 6 sets like a sealing lip more and more to the conical projection 11, and the sealing force is increased. If the free end 10 is irreversibly deformed by the press-fitting process, the deformation of the valve piece 7 need not be applied by the valve clamping screw 13, which would lead to a reduction of the sealing force between the flange 8 and 9 paragraph.
  • the pressure-assisted seal increases the sealing force as the system pressure increases.
  • the rotational grooves formed by the turning operation of the projection 11 form small biting edges, which act on the free end 10 and support the sealing action. Tolerances are absorbed by the pressing of the valve member 7 on the inclination of the free end 10 and can therefore be tolerated relatively coarse.
  • the end of a piston-shaped valve or actuator 14 of the injector is slidably guided in the guide bore 12 of the valve member 7 and limited in the valve member 7 a control chamber 15.
  • the control chamber 15 is connected via an inlet throttle 16 with the annular space 2 and opens via an outlet throttle 17 in a valve seat opening of a conical valve seat 18 which is provided on the side facing away from the guide projection 6 end face of the valve member 7 for cooperation with a valve closure member 19 .
  • the bore wall of the guide bore 12 is of high surface quality due to its grinding operation for the valve or actuator 14.
  • the conical projection 11 of the valve housing 5 surrounds a to Valve piece 7 open bore 20 of the valve housing 5, in which the valve or actuator 14 of the injection valve is arranged.
  • valve closure member 19 In the closed valve position shown, in which the valve closure member 19 rests against the valve seat 18 and thus closes the valve seat opening, the control chamber 15 is acted upon by high pressure and thereby the valve or actuator 14 of the injection valve moved to its lower position.
  • the valve closure member 19 In the open valve position, the valve closure member 19 is lifted from the valve seat 18 and the valve seat opening released, whereby the control chamber 15 is depressurized and the valve or actuator 14 is moved to its upper position.

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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The valve has a housing (5), in which a valve unit (7) is arranged, where the valve unit including a guiding hole (12) and a guiding unit (6). The valve unit is surrounded by a high-pressure side annular space till the height of the guiding unit. The guiding unit includes a free end (10) which is deformed outwards at a conical projection of the housing during assembling of the valve to obtain a pressure-backed sealing.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Ventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine nach der Gattung des unabhängigen Anspruchs 1.The invention relates to a valve for controlling an injection valve of an internal combustion engine according to the preamble of independent claim 1.

Ein derartiges Ventil ist beispielsweise durch die DE 101 46 743 A1 bekannt geworden.Such a valve is for example by the DE 101 46 743 A1 known.

Bei bekannte Magnetventilen von Einspritzsystemen (Common Rail Injektoren) ist zwischen Ventilgehäuse (Injektorkörper) und einem Ventilstück ein Hochdruck-Ringraum gebildet, der über zwei Dichtstellen abgedichtet ist. Eine der Dichtstellen ist als harte Flachdichtung ausgeführt, bei der die Vorspannkraft über eine Ventilstückschraube aufgebracht wird. Die andere Dichtstelle kann aufgrund von Toleranzen nicht ebenfalls als harte Dichtstelle ausgeführt werden, sondern ist durch eine Hochdruckdichtung und gegebenenfalls einen Stützring abgedichtet.In known solenoid valves of injection systems (common rail injectors) between the valve housing (injector) and a valve piece, a high-pressure annulus is formed, which is sealed by two sealing points. One of the sealing points is designed as a hard flat seal in which the preload force is applied via a valve piece screw. The other sealing point may be due to Tolerances are not also performed as a hard sealing point, but is sealed by a high-pressure seal and optionally a support ring.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Ventil mit den Merkmalen des unabhängigen Anspruchs 1 hat demgegenüber den Vorteil, dass Hochdruckdichtung und Stützring durch eine druckunterstützte Abdichtung am Ventilstück ersetzt werden. Durch die selbstverstärkende Abdichtung wird bei Steigerung des Systemdrucks eine Erhöhung der Dichtkraft erreicht. Durch den Wegfall von Hochdruckdichtung und Stützring werden Kosten eingespart, und die Gefahr der Fehlmontage reduziert sich.The valve according to the invention with the features of the independent claim 1 has the advantage that the high pressure seal and support ring are replaced by a pressure-assisted seal on the valve piece. The self-reinforcing seal increases the sealing force as the system pressure increases. The elimination of high pressure seal and support ring costs are saved, and the risk of incorrect assembly is reduced.

Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstands der Erfindung sind der Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Further advantages and advantageous embodiments of the subject invention are the description, the drawings and claims removed.

Zeichnungendrawings

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die einzige Figur zeigt einen Längsschnitt durch das erfindungsgemäße Ventil.An embodiment of the invention is illustrated in the drawing and explained in more detail in the following description. The single FIGURE shows a longitudinal section through the valve according to the invention.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Das in der Figur gezeigte Ventil 1 dient zur Steuerung eines Einspritzventils einer Brennkraftmaschine und weist einen Ringraum 2 auf, der über eine Kraftstoffleitung 3 an einen nicht gezeigten Kraftstoff-Hochdruckspeicher (CommonRail) angeschlossen ist.The valve 1 shown in the figure is used to control an injection valve of an internal combustion engine and has an annular space 2 , which is connected via a fuel line 3 to a high-pressure fuel storage (CommonRail), not shown.

Der hochdruckseitige Ringraum 2 ist in einer gestuften Bohrung 4 des Ventilgehäuses 5 durch einen hülsenförmigen Führungsansatz 6 eines Ventilstücks 7 gebildet, welches mit einem Flansch 8 auf einem Absatz 9 der Bohrung dichtend aufliegt und am freien Ende 10 des Führungsansatzes 6 gegenüber dem Ventilgehäuse 5 abgedichtet ist. Das freie Ende 10 des Führungsansatzes 6 ist verformbar und auf einen konischen Vorsprung 11 des Ventilgehäuses 5 unter Aufweitung einer Führungsbohrung 12 des Ventilstücks 7 aufgeschoben. Durch eine Ventilspannschraube 13 ist der Flansch 8 gegen den Absatz 9 gedrückt.The high-pressure side annular space 2 is formed in a stepped bore 4 of the valve housing 5 by a sleeve-shaped guide projection 6 of a valve member 7 , which sealing with a flange 8 on a shoulder 9 of the bore rests and is sealed at the free end 10 of the guide projection 6 relative to the valve housing 5. The free end 10 of the guide extension 6 is deformable and pushed onto a conical projection 11 of the valve housing 5 by widening a guide bore 12 of the valve member 7. By a valve clamping screw 13 , the flange 8 is pressed against the shoulder 9.

Das Ventilstück 7 besteht aus Metall oder einer Metalllegierung und ist im Bereich seines freien Endes 10 nicht durchgehärtet und in der Wandstärke verringert, so dass das freie Ende 10 verformbar ist. Beim Montagevorgang wird das freie Ende 10 des Führungsansatzes 6 am konischen Vorsprung 11 durch Einpressen entsprechend umgeformt, wodurch eine druckunterstützte Dichtung realisiert wird. Wird der Ringraum 2 mit Hochdruck beaufschlagt, legt sich das freie Ende 10 des Führungsansatzes 6 wie eine Dichtlippe immer stärker an den konischen Vorsprung 11 an, und die Dichtkraft wird erhöht. Wenn das freie Ende 10 durch den Einpressvorgang dabei irreversibel verformt wird, braucht die Verformung des Ventilstücks 7 nicht durch die Ventilspannschraube 13 aufgebracht zu werden, was zu einer Reduzierung der Dichtkraft zwischen Flansch 8 und Absatz 9 führen würde. Durch die druckunterstützte Abdichtung wird bei Steigerung des Systemdrucks eine Erhöhung der Dichtkraft erreicht. Vorteilhaft bilden dabei zusätzlich die durch die Drehbearbeitung des Vorsprungs 11 gebildeten Drehrillen kleine Beißkanten, welche am freien Ende 10 angreifen und die Dichtwirkung unterstützen. Toleranzen werden durch das Einpressen des Ventilstücks 7 über die Schrägstellung des freien Endes 10 aufgenommen und können daher relativ grob toleriert werden.The valve piece 7 is made of metal or a metal alloy and is not through hardened in the region of its free end 10 and reduced in wall thickness, so that the free end 10 is deformable. During the assembly process, the free end 10 of the guide projection 6 is correspondingly formed on the conical projection 11 by pressing, whereby a pressure-assisted seal is realized. If the annular space 2 is subjected to high pressure, the free end 10 of the guide projection 6 sets like a sealing lip more and more to the conical projection 11, and the sealing force is increased. If the free end 10 is irreversibly deformed by the press-fitting process, the deformation of the valve piece 7 need not be applied by the valve clamping screw 13, which would lead to a reduction of the sealing force between the flange 8 and 9 paragraph. The pressure-assisted seal increases the sealing force as the system pressure increases. Advantageously, in addition, the rotational grooves formed by the turning operation of the projection 11 form small biting edges, which act on the free end 10 and support the sealing action. Tolerances are absorbed by the pressing of the valve member 7 on the inclination of the free end 10 and can therefore be tolerated relatively coarse.

Das Ende eines kolbenförmigen Ventil- oder Stellglieds 14 des Einspritzventils ist in der Führungsbohrung 12 des Ventilstückes 7 verschiebbar geführt und begrenzt im Ventilstück 7 einen Steuerraum 15. Der Steuerraum 15 ist über eine Zulaufdrossel 16 mit dem Ringraum 2 verbunden und mündet über eine Ablaufdrossel 17 in eine Ventilsitzöffnung eines konischen Ventilsitzes 18, der auf der dem Führungsansatz 6 abgewandten Stirnseite des Ventilstücks 7 zum Zusammenwirken mit einem Ventilschließglied 19 vorgesehen ist. Die Bohrungswand der Führungsbohrung 12 ist aufgrund ihrer Schleifbearbeitung für das Ventil- oder Stellglied 14 von hoher Oberflächengüte. Der konische Vorsprung 11 des Ventilgehäuses 5 umgibt eine zum Ventilstück 7 offene Bohrung 20 des Ventilgehäuses 5, in der das Ventil- oder Stellglied 14 des Einspritzventils angeordnet ist.The end of a piston-shaped valve or actuator 14 of the injector is slidably guided in the guide bore 12 of the valve member 7 and limited in the valve member 7 a control chamber 15. The control chamber 15 is connected via an inlet throttle 16 with the annular space 2 and opens via an outlet throttle 17 in a valve seat opening of a conical valve seat 18 which is provided on the side facing away from the guide projection 6 end face of the valve member 7 for cooperation with a valve closure member 19 . The bore wall of the guide bore 12 is of high surface quality due to its grinding operation for the valve or actuator 14. The conical projection 11 of the valve housing 5 surrounds a to Valve piece 7 open bore 20 of the valve housing 5, in which the valve or actuator 14 of the injection valve is arranged.

In der gezeigten geschlossenen Ventilstellung, in der das Ventilschließglied 19 am Ventilsitz 18 anliegt und somit die Ventilsitzöffnung verschließt, ist der Steuerraum 15 mit Hochdruck beaufschlagt und dadurch das Ventil- oder Stellglied 14 des Einspritzventils in seine untere Stellung verschoben. In der geöffneten Ventilstellung ist das Ventilschließglied 19 vom Ventilsitz 18 abgehoben und die Ventilsitzöffnung freigegeben, wodurch der Steuerraum 15 druckentlastet wird und das Ventil- oder Stellglied 14 in seine obere Stellung verschoben ist.In the closed valve position shown, in which the valve closure member 19 rests against the valve seat 18 and thus closes the valve seat opening, the control chamber 15 is acted upon by high pressure and thereby the valve or actuator 14 of the injection valve moved to its lower position. In the open valve position, the valve closure member 19 is lifted from the valve seat 18 and the valve seat opening released, whereby the control chamber 15 is depressurized and the valve or actuator 14 is moved to its upper position.

Claims (9)

  1. Valve (1) for controlling an injection valve of an internal combustion engine, with a valve housing (5), in which is arranged a valve piece (7) which has a guide bore (12) and a guide extension (6), the valve piece (7) being surrounded, level with the guide extension (6), by an annular space (2) located on the high-pressure side, and the guide extension (6) of the valve piece (7) having a free end (10), characterized in that the free end (10) of the guide extension (6) is deformable outwards and bears on a conical projection (11) of the valve housing (5) so as to widen the guide bore (12) of the valve piece (7).
  2. Valve according to Claim 1, characterized in that the valve piece (7) lies sealingly on a step (9) of a bore (4), the valve piece (7) being arranged in the bore (4).
  3. Valve according to Claim 1, characterized in that the conical projection (11) of the valve housing (5) has concentric grooves which engage sealingly into the pushed-on free end (10) of the guide extension (6).
  4. Valve according to Claim 1, 2 or 3, characterized in that the valve piece (7) consists of metal or of a metal alloy.
  5. Valve according to Claim 4, characterized in that the valve piece (7), with the exception of the free end (10) of the guide extension (6), is hardened.
  6. Valve according to one of the preceding claims, characterized in that the guide extension (6) has at its free end (10) a smaller wall thickness.
  7. Valve according to one of the preceding claims, characterized in that the free end (10) of the guide extension (6), the said free end being pushed onto the conical projection (11) of the valve housing (5), is formed irreversibly.
  8. Valve according to one of the preceding claims, characterized in that a control space (15) in the guide bore (12) of the valve piece (7) is delimited by a valve member or actuating member (14), guided displaceably therein, of the injection valve, the control space (15) being connected via an inflow throttle (16) to the annular space (2) and issuing via an outflow throttle (17) into a valve orifice of a valve seat (18) which is provided, for interaction with a movable valve-closing member (19), on that end face of the valve piece (7) which faces away from the guide extension (6).
  9. Valve according to Claim 8, characterized in that the conical projection (11) of the valve housing (5) surrounds a bore (20), open to the valve piece (7), of the valve housing (5), in which bore the valve member or actuating member (14) of the injection valve is arranged.
EP06112227A 2005-04-07 2006-04-05 Valve for control of an injection valve of an internal combustion engine Not-in-force EP1710429B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005016010A DE102005016010A1 (en) 2005-04-07 2005-04-07 Valve for controlling an injection valve of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1710429A1 EP1710429A1 (en) 2006-10-11
EP1710429B1 true EP1710429B1 (en) 2008-01-02

Family

ID=36423576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06112227A Not-in-force EP1710429B1 (en) 2005-04-07 2006-04-05 Valve for control of an injection valve of an internal combustion engine

Country Status (3)

Country Link
EP (1) EP1710429B1 (en)
AT (1) ATE382788T1 (en)
DE (2) DE102005016010A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025962A1 (en) * 2007-06-04 2008-12-11 Robert Bosch Gmbh Injector with control valve
CN103026044B (en) * 2009-04-30 2015-03-25 罗伯特·博世有限公司 Pressure control valve and fuel injection device for an internal combustion engine
TR201108103A2 (en) 2011-08-13 2013-01-21 Robert Bosch Gmbh An injection valve with effective sealing.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT220661Z2 (en) * 1990-10-31 1993-10-08 Elasis Sistema Ricerca Fita Nel Mezzogiorno Soc.Consortile P.A. IMPROVEMENTS TO THE HIGH PRESSURE SEALING SYSTEM OF THE PILOT VALVE OF AN ELECTROMAGNETIC INJECTOR FOR FUEL INJECTION SYSTEMS OF INTERNAL COMBUSTION ENGINES
WO2002095217A1 (en) * 2001-05-21 2002-11-28 Robert Bosch Gmbh High pressure sealing element for injectors
DE10146743A1 (en) 2001-09-22 2003-04-17 Bosch Gmbh Robert Injection valve for an internal combustion engine
DE10231623A1 (en) * 2002-07-12 2004-01-29 Robert Bosch Gmbh Solenoid valve controlled servo valve, in particular injector of a fuel injection system for internal combustion engines

Also Published As

Publication number Publication date
DE502006000246D1 (en) 2008-02-14
EP1710429A1 (en) 2006-10-11
DE102005016010A1 (en) 2006-10-12
ATE382788T1 (en) 2008-01-15

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