EP1287255B1 - Injection valve for injecting fuel into the combustion chamber of an internal combustion engine - Google Patents

Injection valve for injecting fuel into the combustion chamber of an internal combustion engine Download PDF

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Publication number
EP1287255B1
EP1287255B1 EP01953161A EP01953161A EP1287255B1 EP 1287255 B1 EP1287255 B1 EP 1287255B1 EP 01953161 A EP01953161 A EP 01953161A EP 01953161 A EP01953161 A EP 01953161A EP 1287255 B1 EP1287255 B1 EP 1287255B1
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EP
European Patent Office
Prior art keywords
nozzle needle
nozzle
injection valve
housing
injection
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
EP01953161A
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German (de)
French (fr)
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EP1287255A1 (en
Inventor
Wolfgang Scheibe
Horst Ressel
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LOrange GmbH
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LOrange GmbH
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Publication of EP1287255A1 publication Critical patent/EP1287255A1/en
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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
    • 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
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • 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

Definitions

  • the invention relates to an injection valve for injecting fuel into the combustion chamber of an internal combustion engine, as provided in the preamble of claim 1.
  • Such an injection valve is known for example from US 5,832,899 as known.
  • the housing of the injection valve consists of a nozzle part with the injection openings and a nozzle holder to which the nozzle part is fastened with a screw sleeve.
  • a longitudinally displaceable guided nozzle needle is added in a bore of the nozzle part .
  • Clamped between nozzle holder and nozzle part is an insert part, which delimits on one side a control space in which the nozzle needle lies with its rear end facing away from the injection holes.
  • On the opposite side has the Einlegteil a drain opening, which is connected via a central bore and a drain throttle with the control room.
  • the control chamber Via an inlet throttle, the control chamber is connected to a fuel channel which supplies pressurized fuel to a nozzle pre-chamber located in front of the injection holes.
  • the fuel pressure acting on the nozzle needle rear side when the outlet opening is closed holds in association with a valve closing spring the nozzle needle in contact with the valve seat in the nozzle part, so that no injection takes place.
  • the discharge port controlled by a control valve is released, the fuel pressure in the control chamber decreases, and the nozzle needle lifts from its valve seat due to the fuel under the injection pressure acting on the nozzle needle front.
  • a disadvantage of the injector shown is that a large dead volume is formed by the lying in the control chamber, acting on the nozzle needle back spring.
  • the response of the injector to switching commands is dependent on the size of the dead volume of the control room. For example, if an injection should be initiated, the dead volume must first be relaxed, for which purpose a time period is required which increases the reaction time of the start of injection to the control command. Conversely, the dead volume causes an extension of the reaction time even when closing the injection valve to terminate the injection. Long Response times affect the accuracy of the injection and degrade the suitability of the injector for pilot injection.
  • US4566416 discloses an injection valve with a largely located above the nozzle part guide sleeve disadvantage is here that a compact design so nich is possible.
  • the invention is based on the problem of providing a closing spring arrangement with a simple construction, which on the one hand allows a compact design of the injection valve and on the other hand also allows short reaction times to switching commands.
  • this object is achieved in that the closing spring is provided on the circumference of the nozzle needle below the nozzle needle guide outside of the control chamber.
  • the closing spring allows a compact design of the injection valve, without taking a complex construction in purchasing.
  • the end face of a guide sleeve serves as a housing-side abutment for the closing spring.
  • the nozzle needle is advantageously designed with a circumferential groove in which an inwardly resiliently biased ring snaps, on which the spring plate of the closing spring can be supported.
  • FIG. 1 shows a longitudinal section of an injection valve 1 in the region of the nozzle part 2.
  • the nozzle part 2, which contains the injection holes 3, is fastened by means of a threaded sleeve 5 on the incompletely illustrated nozzle holder 4.
  • a nozzle needle 17 is guided axially movable.
  • the nozzle needle 17 is located with a nozzle needle shaft 19 in a guide 26 forming a guide sleeve 20, which in turn is arranged in a housing bore 21 of the nozzle part 2.
  • the nozzle holder 4 includes an unillustrated electromagnetic control valve whose armature is connected to an actuator 6.
  • the Actuator 6, which is also shown only partially, may be in the form of a rod whose front side, as shown, cooperates with a drain opening 7.
  • the drain opening 7 is connected via an outlet throttle 8 and a bore 9 in an insert 10 between nozzle holder 4 and nozzle part 2 with a control chamber 11 in connection.
  • the control chamber 11 communicates with a fuel inlet channel 14, via which fuel standing under the injection pressure is supplied to a nozzle antechamber 15, which is disposed upstream of the injection holes 3. Due to the fuel pressure acting at the closed discharge opening 7 in the control chamber 11 and thus also on the nozzle needle back and also acting in the closing direction biased closing spring 16, the nozzle needle 17 is held pressed against the valve seat 18 in the nozzle part 2, so that no injection takes place. If the actuator 6 is withdrawn and the drain opening 7 is thus released, the pressure in the control chamber 11 drops.
  • the fuel flowing out via the drain opening 7 reaches a return passage 25 shown in dashed lines.
  • the speed with which the pressure drop for opening and the pressure increase for closing the drain Injector takes place in the control chamber 11 should be as high as possible to allow a quick response of the injector 1 to the switching commands. This condition is given by the fact that the control chamber 11 remains free of internals and thus has a small dead volume, which is made possible by the arrangement of the closing spring 16 on the nozzle needle circumference. At the same time allows the arrangement of the closing spring 16 on the circumference of the nozzle needle 17 a simple construction of the injection valve 1, in particular a compact design is possible.
  • the abutment 16 required for supporting the closing spring 16 are formed on the housing side of the guide sleeve 20 of the nozzle needle shaft 19 according to FIG.
  • the closing spring 16 is supported on an end face of the guide sleeve 20.
  • the abutment can be formed, for example, by a circumferential groove 22 and a radially inwardly resilient ring 23 engaged therein.

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  • 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

An injection valve for injecting fuel into the combustion chamber of an internal combustion engine has an injector needle guided inside the housing in such a way that it can be displaced longitudinally with a shaft in order to open and close the injection cross-sections. The injector needle is actuated by the fuel pressure which act upon the injector needle and by a closing spring acting in the closing direction of the injection needle. The closing spring is pre-compressed between abutments on the injector needle and the housing and is situated on the perimeter of the injector needle in the area between the injector needle guide and the valve seat. One advantage of the arrangement is the compact construction of the injection valve and the low dead volume of the control chamber on the reverse side of the injector needle.

Description

Die Erfindung betrifft ein Einspritzventil zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine, wie es im Oberbegriff des Anspruchs 1 vorausgesetzt ist.The invention relates to an injection valve for injecting fuel into the combustion chamber of an internal combustion engine, as provided in the preamble of claim 1.

Ein solches Einspritzventil geht beispielsweise aus der US 5,832,899 als bekannt hervor. Das Gehäuse des Einspritzventils besteht aus einem Düsenteil mit den Einspritzöffnungen und einem Düsenhalter, an dem das Düsenteil mit einer Schraubhülse befestigt ist. In einer Bohrung des Düsenteils ist eine längsverschieblich geführte Düsennadel aufgenommen. Zwischen Düsenhalter und Düsenteil eingespannt befindet sich ein Einlegteil, das auf einer Seite einen Steuerraum begrenzt, in dem die Düsennadel mit ihrem rückwärtigen, den Einspritzlöchern abgewandten Ende liegt. Auf der gegenüberliegenden Seite besitzt das Einlegteil eine Abflussöffnung, die über eine zentrale Bohrung und eine Abflussdrossel mit dem Steuerraum verbunden ist. Über eine Zulaufdrossel ist der Steuerraum mit einem Kraftstoffkanal verbunden, der einem vor den Einspritzlöchern liegenden Düsenvorraum unter Druck stehenden Kraftstoff zuführt. Der bei verschlossener Abflussöffnung auf der Düsennadelrückseite wirkende Kraftstoffdruck hält im Verband mit einer Ventilschließfeder die Düsennadel in Anlage am Ventilsitz im Düsenteil, so dass keine Einspritzung erfolgt. Wird die von einem Steuerventil gesteuerte Abflussöffnung freigegeben, sinkt der Kraftstoffdruck im Steuerraum und die Düsennadel hebt aufgrund des auf der Düsennadelvorderseite wirkenden, unter dem Einspritzdruck stehenden Kraftstoffs von ihrem Ventilsitz ab. Nachteilig an dem dargestellten Einspritzventil ist, dass durch die im Steuerraum liegende, auf die Düsennadelrückseite wirkende Schließfeder ein großes Totvolumen gebildet wird. Die Reaktion des Injektors auf Schaltbefehle ist jedoch von der Größe des Totvolumens des Steuerraums abhängig. Soll beispielsweise eine Einspritzung eingeleitet werden, so muss das Totvolumen zunächst entspannt werden, wozu eine Zeitspanne benötigt wird, welche die Reaktionszeit des Einspritzbeginns auf den Steuerbefehl vergrößert. Umgekehrt verursacht das Totvolumen auch beim Schließen des Einspritzventils zum Beenden der Einspritzung eine Verlängerung der Reaktionszeit. Lange Reaktionszeiten beeinträchtigen die Genauigkeit der Einspritzung und verschlechtern die Eignung des Injektors für Voreinspritzung.Such an injection valve is known for example from US 5,832,899 as known. The housing of the injection valve consists of a nozzle part with the injection openings and a nozzle holder to which the nozzle part is fastened with a screw sleeve. In a bore of the nozzle part a longitudinally displaceable guided nozzle needle is added. Clamped between nozzle holder and nozzle part is an insert part, which delimits on one side a control space in which the nozzle needle lies with its rear end facing away from the injection holes. On the opposite side has the Einlegteil a drain opening, which is connected via a central bore and a drain throttle with the control room. Via an inlet throttle, the control chamber is connected to a fuel channel which supplies pressurized fuel to a nozzle pre-chamber located in front of the injection holes. The fuel pressure acting on the nozzle needle rear side when the outlet opening is closed holds in association with a valve closing spring the nozzle needle in contact with the valve seat in the nozzle part, so that no injection takes place. When the discharge port controlled by a control valve is released, the fuel pressure in the control chamber decreases, and the nozzle needle lifts from its valve seat due to the fuel under the injection pressure acting on the nozzle needle front. A disadvantage of the injector shown is that a large dead volume is formed by the lying in the control chamber, acting on the nozzle needle back spring. However, the response of the injector to switching commands is dependent on the size of the dead volume of the control room. For example, if an injection should be initiated, the dead volume must first be relaxed, for which purpose a time period is required which increases the reaction time of the start of injection to the control command. Conversely, the dead volume causes an extension of the reaction time even when closing the injection valve to terminate the injection. Long Response times affect the accuracy of the injection and degrade the suitability of the injector for pilot injection.

US4566416 offenbart ein Einspritzventil mit einer großenteils oberhalb des Düsenteils sich befindlichen Führungshülse Nachteilig ist hier, dass eine kompakte Bauweise so nich möglich ist.US4566416 discloses an injection valve with a largely located above the nozzle part guide sleeve disadvantage is here that a compact design so nich is possible.

Der Erfindung liegt die Problemstellung zugrunde, bei einfacher Konstruktion eine Schließfederanordnung anzugeben, die einerseits eine kompakte Bauweise des Einspritzventils zulässt und andrerseits auch kurze Reaktionszeiten auf Schaltbefehle ermöglicht.The invention is based on the problem of providing a closing spring arrangement with a simple construction, which on the one hand allows a compact design of the injection valve and on the other hand also allows short reaction times to switching commands.

Erfindungsgemäß wird die gestellte Aufgabe dadurch gelöst, dass die Schließfeder auf dem Umfang der Düsennadel unterhalb der Düsennadelführung außerhalb des Steuerraums vorgesehen ist.According to the invention this object is achieved in that the closing spring is provided on the circumference of the nozzle needle below the nozzle needle guide outside of the control chamber.

Diese Anordnung der Schließfeder erlaubt eine kompakte Ausführung des Einspritzventils, ohne dafür eine aufwendige Konstruktion in Kauf zu nehmen. Bei einer bevorzugten Ausführungsform dient die Stirnseite einer Führungshülse als gehäuseseitiges Widerlager für die Schließfeder. Die Düsennadel ist vorteilhafterweise mit einer umlaufenden Nut ausgeführt, in der ein nach innen federnd vorgespannter Ring einrastet, auf dem der Federteller der Schließfeder abgestützt werden kann.This arrangement of the closing spring allows a compact design of the injection valve, without taking a complex construction in purchasing. In a preferred embodiment, the end face of a guide sleeve serves as a housing-side abutment for the closing spring. The nozzle needle is advantageously designed with a circumferential groove in which an inwardly resiliently biased ring snaps, on which the spring plate of the closing spring can be supported.

Ein Ausführungsbeispiel der Erfindung wird anhand der beigefügten Zeichnungen erläutert. Es zeigen:

Figur 1:
einen Längsschnitt durch das erfindungsgemäße Einspritzventil im Bereich des Düsenteils, und
Figur 2:
eine Düsennadel mit angeformtem Rand als Widerlager.
An embodiment of the invention will be explained with reference to the accompanying drawings. Show it:
FIG. 1:
a longitudinal section through the injection valve according to the invention in the region of the nozzle part, and
FIG. 2:
a nozzle needle with molded edge as an abutment.

Figur 1 zeigt einen Längsschnitt eines Einspritzventils 1 im Bereich des Düsenteils 2. Das Düsenteil 2, das die Einspritzlöcher 3 enthält, ist mittels einer Schraubhülse 5 am unvollständig dargestellten Düsenhalter 4 befestigt. Im Düsenteil 2 ist eine Düsennadel 17 axialbeweglich geführt. Die Düsennadel 17 liegt mit einem Düsennadelschaft 19 in einer eine Führung 26 bildenden Führungshülse 20, die ihrerseits in einer Gehäusebohrung 21 des Düsenteils 2 angeordnet ist. Der Düsenhalter 4 beinhaltet ein nicht dargestelltes elektromagnetisches Steuerventil, dessen Anker mit einem Stellglied 6 verbunden ist. Das Stellglied 6, das ebenfalls nur teilweise dargestellt ist, kann in Form einer Stange ausgeführt sein, deren Stirnseite, wie dargestellt, mit einer Abflussöffnung 7 zusammenwirkt. Die Abflussöffnung 7 steht über eine Abflussdrossel 8 und eine Bohrung 9 in einem Einlegeteil 10 zwischen Düsenhalter 4 und Düsenteil 2 mit einem Steuerraum 11 in Verbindung. Über eine weitere Bohrung 12 und eine Zulaufdrossel 13 steht der Steuerraum 11 mit einem Kraftstoffzulaufkanal 14 in Verbindung, über den unter dem Einspritzdruck stehender Kraftstoff einem Düsenvorraum 15 zugeführt wird, der den Einspritzlöchern 3 vorgelagert ist. Aufgrund des bei verschlossener Abflussöffnung 7 im Steuerraum 11 und damit auch auf der Düsennadelrückseite wirkenden Kraftstoffdrucks und der ebenfalls in Schließrichtung wirkenden vorgespannten Schließfeder 16 wird die Düsennadel 17 in Anlage am Ventilsitz 18 im Düsenteil 2 angedrückt gehalten, so dass keine Einspritzung erfolgt. Wird das Stellglied 6 zurückgezogen und die Abflussöffnung 7 damit frei gegeben, sinkt der Druck im Steuerraum 11. Der über die Abflussöffnung 7 abströmende Kraftstoff gelangt in einen gestrichelt dargestellten Rücklaufkanal 25. Die Geschwindigkeit, mit der der Druckabfall zum Öffnen und der Druckanstieg zum Schließen des Einspritzventils im Steuerraum 11 stattfindet, soll so hoch wie möglich sein, um eine schnelle Reaktion des Einspritzventils 1 auf die Schaltbefehle zu ermöglichen. Diese Voraussetzung ist dadurch gegeben, dass der Steuerraum 11 frei von Einbauten bleibt und damit ein kleines Totvolumen aufweist, was durch die Anordnung der Schließfeder 16 auf dem Düsennadelumfang ermöglicht wird. Zugleich erlaubt die Anordnung der Schließfeder 16 auf dem Umfang der Düsennadel 17 eine einfache Konstruktion des Einspritzventils 1, wobei insbesondere eine kompakte Ausführung möglich ist.1 shows a longitudinal section of an injection valve 1 in the region of the nozzle part 2. The nozzle part 2, which contains the injection holes 3, is fastened by means of a threaded sleeve 5 on the incompletely illustrated nozzle holder 4. In the nozzle part 2, a nozzle needle 17 is guided axially movable. The nozzle needle 17 is located with a nozzle needle shaft 19 in a guide 26 forming a guide sleeve 20, which in turn is arranged in a housing bore 21 of the nozzle part 2. The nozzle holder 4 includes an unillustrated electromagnetic control valve whose armature is connected to an actuator 6. The Actuator 6, which is also shown only partially, may be in the form of a rod whose front side, as shown, cooperates with a drain opening 7. The drain opening 7 is connected via an outlet throttle 8 and a bore 9 in an insert 10 between nozzle holder 4 and nozzle part 2 with a control chamber 11 in connection. Via a further bore 12 and an inlet throttle 13, the control chamber 11 communicates with a fuel inlet channel 14, via which fuel standing under the injection pressure is supplied to a nozzle antechamber 15, which is disposed upstream of the injection holes 3. Due to the fuel pressure acting at the closed discharge opening 7 in the control chamber 11 and thus also on the nozzle needle back and also acting in the closing direction biased closing spring 16, the nozzle needle 17 is held pressed against the valve seat 18 in the nozzle part 2, so that no injection takes place. If the actuator 6 is withdrawn and the drain opening 7 is thus released, the pressure in the control chamber 11 drops. The fuel flowing out via the drain opening 7 reaches a return passage 25 shown in dashed lines. The speed with which the pressure drop for opening and the pressure increase for closing the drain Injector takes place in the control chamber 11 should be as high as possible to allow a quick response of the injector 1 to the switching commands. This condition is given by the fact that the control chamber 11 remains free of internals and thus has a small dead volume, which is made possible by the arrangement of the closing spring 16 on the nozzle needle circumference. At the same time allows the arrangement of the closing spring 16 on the circumference of the nozzle needle 17 a simple construction of the injection valve 1, in particular a compact design is possible.

Die zur Abstützung der Schließfeder 16 erforderlichen Widerlager werden entsprechend Figur 1 gehäuseseitig von der Führungshülse 20 des Düsennadelschafts 19 gebildet. Dabei stützt sich die Schließfeder 16 auf einer Stirnseite der Führungshülse 20 ab. Düsennadelseitig kann das Widerlager zum Beispiel durch eine umlaufende Nut 22 und darin eingerastetem, radial nach innen federndem Ring 23 gebildet werden. Wie in Figur 2 dargestellt, besteht auch die Möglichkeit, das Widerlager an der Düsennadel 17 durch einen mit der Düsennadel 17 einstückig ausgeformten Rand 24 darzustellen.The abutment 16 required for supporting the closing spring 16 are formed on the housing side of the guide sleeve 20 of the nozzle needle shaft 19 according to FIG. In this case, the closing spring 16 is supported on an end face of the guide sleeve 20. On the nozzle needle side, the abutment can be formed, for example, by a circumferential groove 22 and a radially inwardly resilient ring 23 engaged therein. As shown in Figure 2, it is also possible to represent the abutment on the nozzle needle 17 by a integrally formed with the nozzle needle 17 edge 24.

Claims (5)

  1. Injection valve (1) for injecting fuel into the combustion chamber of an internal combustion engine, having a housing, a nozzle needle (17) which is mounted in a longitudinally displaceable manner by means of a nozzle needle shaft (19) in a guide (26) in the housing and which interacts at one end with a valve seat (18) for the purpose of opening and closing an injection cross section of the housing, a nozzle admission space (15) which is situated upstream of the nozzle needle shaft (19) on the valve seat side and which is connected to a fuel supply duct (14) for the supply of pressurized fuel which is to be injected, a control space (11) which is coupled to the nozzle needle (17), can be acted upon by pressurized fuel and which can be relieved of pressure by means of an actuating element (6) coupled to a control valve for the purpose of opening the nozzle needle (17), and having a closing spring (16) which acts upon the nozzle needle (17) in the closing direction, and interacts with abutments on the nozzle needle (17) and the housing, the closing spring (16) being arranged in the region between the nozzle needle shaft (19) and the valve seat (18) on the circumference of the nozzle needle (17), the housing of the injection valve (1) being designed with a separate nozzle part (2) fastened to a nozzle holder (4), the nozzle needle (17) being situated with its back end, which end faces away from the valve seat (18), in the control space (11), the control valve being arranged in the nozzle holder (4) above the control space (11), the actuating element (6) controlling an outflow opening (7) which is connected to the control space (11), a disc-shaped insert part (10) being provided between the nozzle part (2) and nozzle holder (4), said insert part both comprising the outflow opening (7) and serving as a stop for the nozzle needle (17), the nozzle needle shaft (19) being guided in a guide sleeve (20) and an end edge of the guide sleeve (20), which edge faces away from the control space (11), serving as an abutment for the closing spring (16) on the housing side, characterized in that the nozzle part (2) extends up to the insert part (10), in that the nozzle part (2) comprises the fuel supply duct (14) and in that the entire length of the guide sleeve (20) is situated within the nozzle part (2).
  2. Injection valve according to Claim 1, characterized in that a circumferential edge (24) which is connected to the nozzle needle (17) serves as an abutment on the nozzle needle side.
  3. Injection valve according to Claim 2, characterized in that the edge (24) is in one piece with the nozzle needle (17).
  4. Injection valve according to Claim 3, characterized in that the edge (24) is formed by a ring (23) which is fastened to the nozzle needle (17).
  5. Injection valve according to Claim 4, characterized in that the ring (23) is situated under radial preload in a groove (22) of the nozzle needle (17).
EP01953161A 2000-05-26 2001-05-25 Injection valve for injecting fuel into the combustion chamber of an internal combustion engine Expired - Lifetime EP1287255B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10026286 2000-05-26
DE10026286A DE10026286A1 (en) 2000-05-26 2000-05-26 Injection valve for injecting fuel into the combustion chamber of an internal combustion engine
PCT/EP2001/005973 WO2001090566A1 (en) 2000-05-26 2001-05-25 Injection valve for injecting fuel into the combustion chamber of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1287255A1 EP1287255A1 (en) 2003-03-05
EP1287255B1 true EP1287255B1 (en) 2006-02-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953161A Expired - Lifetime EP1287255B1 (en) 2000-05-26 2001-05-25 Injection valve for injecting fuel into the combustion chamber of an internal combustion engine

Country Status (7)

Country Link
US (1) US6808132B2 (en)
EP (1) EP1287255B1 (en)
JP (1) JP2003534493A (en)
KR (1) KR100713273B1 (en)
AT (1) ATE318372T1 (en)
DE (2) DE10026286A1 (en)
WO (1) WO2001090566A1 (en)

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AT501668B1 (en) * 2004-08-24 2007-03-15 Bosch Gmbh Robert CONTROL VALVE FOR AN INJECTION NOZZLE
US10116750B2 (en) * 2016-04-01 2018-10-30 Intel Corporation Mechanism for highly available rack management in rack scale environment

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GB9520243D0 (en) 1995-10-04 1995-12-06 Lucas Ind Plc Injector
US5979803A (en) 1997-05-09 1999-11-09 Cummins Engine Company Fuel injector with pressure balanced needle valve
DE19837890B4 (en) 1998-08-20 2004-06-03 Siemens Ag Fuel injection valve for internal combustion engines
WO2000028205A1 (en) * 1998-11-10 2000-05-18 Ganser-Hydromag Ag Fuel injection valve for internal combustion engines
GB9904938D0 (en) * 1999-03-04 1999-04-28 Lucas Ind Plc Fuel injector
DE19949527A1 (en) * 1999-10-14 2001-04-19 Bosch Gmbh Robert Injector for a fuel injection system for internal combustion engines with a nozzle needle protruding into the valve control chamber

Also Published As

Publication number Publication date
KR100713273B1 (en) 2007-05-04
US6808132B2 (en) 2004-10-26
ATE318372T1 (en) 2006-03-15
DE50109004D1 (en) 2006-04-27
JP2003534493A (en) 2003-11-18
EP1287255A1 (en) 2003-03-05
KR20030007696A (en) 2003-01-23
DE10026286A1 (en) 2001-12-13
US20040074983A1 (en) 2004-04-22
WO2001090566A1 (en) 2001-11-29

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