EP1133634B1 - High pressure fuel accumulator - Google Patents

High pressure fuel accumulator Download PDF

Info

Publication number
EP1133634B1
EP1133634B1 EP00969195A EP00969195A EP1133634B1 EP 1133634 B1 EP1133634 B1 EP 1133634B1 EP 00969195 A EP00969195 A EP 00969195A EP 00969195 A EP00969195 A EP 00969195A EP 1133634 B1 EP1133634 B1 EP 1133634B1
Authority
EP
European Patent Office
Prior art keywords
pressure fuel
connection
basic body
fuel accumulator
orifice
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
EP00969195A
Other languages
German (de)
French (fr)
Other versions
EP1133634A1 (en
Inventor
Patrick Mattes
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 EP1133634A1 publication Critical patent/EP1133634A1/en
Application granted granted Critical
Publication of EP1133634B1 publication Critical patent/EP1133634B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails

Definitions

  • the invention relates to a high-pressure fuel storage for a Common rail fuel injection system of an internal combustion engine according to the preamble of claim 1.
  • a high-pressure pump delivers possibly with the aid of a prefeed pump, the Fuel to be injected from a tank in the central High-pressure fuel storage, which is referred to as common rail. From the common rail lead fuel lines to the individual Injectors associated with the cylinders of the internal combustion engine. The injectors are dependent on the operating parameters of Internal combustion engine individually controlled by the engine electronics to To inject fuel into the combustion chamber of the internal combustion engine.
  • a conventional high pressure fuel storage is e.g. in DE 295 21 402 U described.
  • the well-known high-pressure fuel storage stops Pressures of up to about 1100 bar.
  • the object of the invention is the high pressure resistance of known fuel high pressure accumulator with simple measures increase.
  • the inventive Fuel high-pressure accumulator be inexpensive to produce.
  • the object is in a high-pressure fuel storage for a common rail fuel injection system an internal combustion engine with the Characteristics of claim 1 solved according to the invention.
  • the Intersection area between the connection openings and the Basic body interior, especially at high internal pressures a Weak point, which can lead to failure due to cracking. Through the connecting piece of this critical area is defused. This ensures a long service life even at high internal pressures guaranteed.
  • the present invention enables using of conventional materials and manufacturing processes one cost-effective production of particularly pressure-resistant High-pressure fuel saving.
  • the elongated connecting piece through the interior of the Base body extends through and on the connection opening is attached opposite side of the base body, wherein in the Section of the connecting piece which, in the basic body interior, is arranged, at least one passage opening is provided, need in the area of the connection opening no fasteners for be provided the connection piece.
  • the passage opening allows high pressure fuel from the Connecting piece in the Body interior can get.
  • Another particular embodiment of the invention is characterized characterized in that the spigot on the outward facing Side of the connection opening is supported and in the assembled Condition is loaded on train. This leads to a tension of the Basic body in the intersection between the connection openings and the body interior. The resulting from the tension Forces act on the hydraulic forces in the body interior opposite. This ensures crack formation at high internal pressures prevented.
  • the high-pressure fuel storage according to the invention can with be operated at a higher rail pressure than conventional High-pressure fuel storage.
  • Another particular embodiment of the invention is characterized characterized in that at the end facing the end of the Connecting piece a cone is formed, which with a complementary surface on the main body in the area of the associated Connection opening cooperates. About the cone is the traction of transferred to the connecting piece on the body.
  • the illustrated High-pressure fuel storage comprises a tubular Basic body 1. On the tubular base body 1 is a also tubular connector 2 is formed. Of the inventive high-pressure fuel storage has several tubular fittings on. The fittings are used for connecting high-pressure fuel lines to lead the individual injectors. In addition, serve the Connecting pieces, for example, for receiving pressure sensors. Instead of of the tubular body 1 may also be a (not shown) spherical base body can be used.
  • the outwardly facing end face 3 of the tubular Connecting piece 2 is funnel-shaped.
  • the funnel-shaped end face 3 acts with a cone. 4 together, which is formed on a collar 5.
  • the covenant 5 belongs to a tubular connecting piece 6, which is through the tubular connector 2 in the Interior of the tubular body 1 extends.
  • a Passage opening 7 in the tubular connecting piece 6 allows the passage of fuel.
  • the end remote from the tubular connector 2 end of the connecting piece 6 is in a bore 8 in the attached tubular body 1.
  • the bore 8 is diametrically opposite to the tubular one Connector 2 arranged.
  • the bore 8 with an internal thread 9 equipped with a External thread 10 cooperates at the end of the Connecting piece 6 is formed.

Description

Die Erfindung betrifft einen Kraftstoffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem einer Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a high-pressure fuel storage for a Common rail fuel injection system of an internal combustion engine according to the preamble of claim 1.

In Common-Rail-Einspritzsystemen fördert eine Hochdruckpumpe, eventuell unter Zuhilfenahme einer Vorförderpumpe, den einzuspritzenden Kraftstoff aus einem Tank in den zentralen Kraftstoffhochdruckspeicher, der als Common-Rail bezeichnet wird. Von dem Common-Rail führen Kraftstoffleitungen zu den einzelnen Injektoren, die den Zylindern der Brennkraftmaschine zugeordnet sind. Die Injektoren werden in Abhängigkeit von den Betriebsparametern der Brennkraftmaschine einzeln von der Motorelektronik angesteuert, um Kraftstoff in den Brennraum der Brennkraftmaschine einzuspritzen.In common-rail injection systems, a high-pressure pump delivers possibly with the aid of a prefeed pump, the Fuel to be injected from a tank in the central High-pressure fuel storage, which is referred to as common rail. From the common rail lead fuel lines to the individual Injectors associated with the cylinders of the internal combustion engine. The injectors are dependent on the operating parameters of Internal combustion engine individually controlled by the engine electronics to To inject fuel into the combustion chamber of the internal combustion engine.

Ein herkömmlicher Kraftstoffhochdruckspeicher ist z.B. in der DE 295 21 402 U beschrieben. Der bekannte Kraftstoffhochdruckspeicher hält Drücke von bis zu etwa 1100 bar aus.A conventional high pressure fuel storage is e.g. in DE 295 21 402 U described. The well-known high-pressure fuel storage stops Pressures of up to about 1100 bar.

Aus der EP 0 915 252 A2 ist ein Kraftstoffeinspritzsystem bekannt bei dem Injektoren den Common-Rail durchdringen und durch eine Befestigungsmutter an dem Common-Rail befestigt werden.From EP 0 915 252 A2 a fuel injection system is known penetrate the common rail through the injectors and through a Fixing nut can be attached to the common rail.

Aus der EP 0 866 221 A1 ist ein Kraftstoffeinspritzsystem bekannt bei dem Anschlussstutzen den Common-Rail durchdringen und an ihrem einen Ende mit dem Common-Rail verschweißt werden.From EP 0 866 221 A1 a fuel injection system is known the connecting piece penetrate the common rail and at its one End welded to the common rail.

Aufgabe der Erfindung ist es, die Hochdruckfestigkeit des bekannten Kraftstoffhochdruckspeichers mit einfachen Maßnahmen zu erhöhen. Darüber hinaus soll der erfindungsgemäße Kraftstoffhochdruckspeicher kostengünstig herstellbar sein.The object of the invention is the high pressure resistance of known fuel high pressure accumulator with simple measures increase. In addition, the inventive Fuel high-pressure accumulator be inexpensive to produce.

Die Aufgabe ist bei einem Kraftstoffhochdruckspeicher für ein Common-Rail-Kraftstoffeinspritzsystem einer Brennkraftmaschine mit den Merkmalen des Anspruchs 1 erfindungsgemäß gelöst. Im Rahmen der vorliegenden Erfindung hat sich herausgestellt, dass der Verschneidungsbereich zwischen den Anschlussöffnungen und dem Grundkörperinnenraum, insbesondere bei hohen Innendrücken, eine Schwachstelle bildet, die durch Rissbildung zum Versagen führen kann. Durch den Anschlussstutzen wird dieser kritische Bereich entschärft. Dadurch wird auch bei hohen Innendrücken eine hohe Lebensdauer gewährleistet. Die vorliegende Erfindung ermöglicht unter Verwendung von konventionellen Werkstoffen und Fertigungsverfahren eine kostengünstige Herstellung von besonders druckfesten Kraftstoffhochdruckspeichern.The object is in a high-pressure fuel storage for a common rail fuel injection system an internal combustion engine with the Characteristics of claim 1 solved according to the invention. As part of the present invention has been found that the Intersection area between the connection openings and the Basic body interior, especially at high internal pressures, a Weak point, which can lead to failure due to cracking. Through the connecting piece of this critical area is defused. This ensures a long service life even at high internal pressures guaranteed. The present invention enables using of conventional materials and manufacturing processes one cost-effective production of particularly pressure-resistant High-pressure fuel saving.

Weil sich der längliche Anschlussstutzen durch den Innenraum des Grundkörpers hindurch erstreckt und auf der der Anschlussöffnung gegenüberliegenden Seite des Grundkörpers befestigt ist, wobei in dem Abschnitt des Anschlussstutzens, der in dem Grundkörperinnenraum, angeordnet ist, mindestens eine Durchtrittsöffnung vorgesehen ist, müssen im Bereich der Anschlussöffnung keine Befestigungsmittel für den Anschlussstutzen vorgesehen sein. Die Durchtrittsöffnung ermöglicht, dass mit Hochdruck beaufschlagter Kraftstoff aus dem Anschlussstutzen in den Grundkörperinnenraum gelangen kann.Because the elongated connecting piece through the interior of the Base body extends through and on the connection opening is attached opposite side of the base body, wherein in the Section of the connecting piece which, in the basic body interior, is arranged, at least one passage opening is provided, need in the area of the connection opening no fasteners for be provided the connection piece. The passage opening allows high pressure fuel from the Connecting piece in the Body interior can get.

Dadurch, dass an dem der Anschlussöffnung gegenüberliegenden Ende des Anschlussstutzens ein Außengewinde ausgebildet ist, das mit einem Innengewinde zusammenwirkt, das in einer entsprechenden Bohrung in dem Grundkörper vorgesehen ist, wird die Montage des Anschlussstutzens vereinfacht und gleichzeitig ein leichtes Auswechseln des Anschlussstutzens ermöglicht. Der Grad der Verspannung kann über die Einschraubtiefe stufenlos eingestellt werden.Characterized in that at the opposite end of the connection opening of the Connecting piece an external thread is formed, which with a Internal thread cooperates, in a corresponding hole in the Base body is provided, the mounting of the connection piece Simplified and at the same time easy replacement of the Connecting piece allows. The degree of tension can over the Screw depth can be adjusted continuously.

Eine weitere besondere Ausführungsart der Erfindung ist dadurch gekennzeichnet, dass der Anschlussstutzen an der nach außen gewandten Seite der Anschlussöffnung abgestützt ist und im zusammengebauten Zustand auf Zug belastet ist. Das führt zu einer Verspannung des Grundkörpers im Verschneidungsbereich zwischen den Anschlussöffnungen und dem Grundkörperinnenraum. Die aus der Verspannung resultierenden Kräfte wirken den hydraulischen Kräften im Grundkörperinnenraum entgegen. Dadurch wird die Rissbildung bei hohen Innendrücken sicher verhindert. Der erfindungsgemäße Kraftstoffhochdruckspeicher kann mit einem höheren Raildruck betrieben werden als herkömmliche Kraftstoffhochdruckspeicher.Another particular embodiment of the invention is characterized characterized in that the spigot on the outward facing Side of the connection opening is supported and in the assembled Condition is loaded on train. This leads to a tension of the Basic body in the intersection between the connection openings and the body interior. The resulting from the tension Forces act on the hydraulic forces in the body interior opposite. This ensures crack formation at high internal pressures prevented. The high-pressure fuel storage according to the invention can with be operated at a higher rail pressure than conventional High-pressure fuel storage.

Eine weitere besondere Ausführungsart der Erfindung ist dadurch gekennzeichnet, dass an dem nach außen gewandten Ende des Anschlussstutzens ein Konus ausgebildet ist, der mit einer komplementären Fläche an dem Grundkörper im Bereich der zugehörigen Anschlussöffnung zusammenwirkt. Über den Konus wird die Zugkraft von dem Anschlussstutzen auf den Grundkörper übertragen.Another particular embodiment of the invention is characterized characterized in that at the end facing the end of the Connecting piece a cone is formed, which with a complementary surface on the main body in the area of the associated Connection opening cooperates. About the cone is the traction of transferred to the connecting piece on the body.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein Ausführungsbeispiel der Erfindung im Einzelnen beschrieben ist. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will be apparent from the following description in which with reference to the drawing an embodiment the invention is described in detail. It can those mentioned in the claims and in the description Characteristics in each case individually or in any one Combination essential to the invention.

In der Zeichnung ist eine Ausführungsform eines erfindungsgemäßen Kraftstoffhochdruckspeichers im Querschnitt dargestellt. Der dargestellte Kraftstoffhochdruckspeicher umfasst einen rohrförmigen Grundkörper 1. An dem rohrförmigen Grundkörper 1 ist ein ebenfalls rohrförmiges Anschlussstück 2 ausgebildet. Der erfindungsgemäße Kraftstoffhochdruckspeicher weist mehrere rohrförmige Anschlussstücke auf. Die Anschlussstücke dienen zum Anschließen von Kraftstoffhochdruckleitungen, die zu den einzelnen Injektoren führen. Darüberhinaus dienen die Anschlussstücke bspw. zur Aufnahme von Drucksensoren. Statt des rohrförmigen Grundkörpers 1 kann auch ein (nicht dargestellter) kugelförmiger Grundkörper verwendet werden.In the drawing, an embodiment of a Fuel high pressure accumulator according to the invention in Cross section shown. The illustrated High-pressure fuel storage comprises a tubular Basic body 1. On the tubular base body 1 is a also tubular connector 2 is formed. Of the inventive high-pressure fuel storage has several tubular fittings on. The fittings are used for connecting high-pressure fuel lines to lead the individual injectors. In addition, serve the Connecting pieces, for example, for receiving pressure sensors. Instead of of the tubular body 1 may also be a (not shown) spherical base body can be used.

Die nach außen gewandte Stirnseite 3 des rohrförmigen Anschlussstücks 2 ist trichterförmig ausgebildet. Die trichterförmige Stirnseite 3 wirkt mit einem Konus 4 zusammen, der an einem Bund 5 ausgebildet ist. Der Bund 5 gehört zu einem rohrförmigen Anschlussstutzen 6, der sich durch das rohrförmige Anschlussstück 2 hindurch in den Innenraum des rohrförmigen Grundkörpers 1 erstreckt. Eine Durchtrittsöffnung 7 in dem rohrförmigen Anschlussstutzen 6 ermöglicht den Durchtritt von Kraftstoff.The outwardly facing end face 3 of the tubular Connecting piece 2 is funnel-shaped. The funnel-shaped end face 3 acts with a cone. 4 together, which is formed on a collar 5. The covenant 5 belongs to a tubular connecting piece 6, which is through the tubular connector 2 in the Interior of the tubular body 1 extends. A Passage opening 7 in the tubular connecting piece 6 allows the passage of fuel.

Das von dem rohrförmigen Anschlussstück 2 abgewandte Ende des Anschlussstutzens 6 ist in einer Bohrung 8 in dem rohrförmigen Grundkörper 1 befestigt. Die Bohrung 8 ist diametral gegenüberliegend zu dem rohrförmigen Anschlussstück 2 angeordnet. Außerdem ist die Bohrung 8 mit einem Innengewinde 9 ausgestattet, das mit einem Außengewinde 10 zusammenwirkt, das am Ende des Anschlussstutzens 6 ausgebildet ist.The end remote from the tubular connector 2 end of the connecting piece 6 is in a bore 8 in the attached tubular body 1. The bore 8 is diametrically opposite to the tubular one Connector 2 arranged. In addition, the bore 8 with an internal thread 9 equipped with a External thread 10 cooperates at the end of the Connecting piece 6 is formed.

Claims (4)

  1. High-pressure fuel accumulator for a common-rail fuel injection system of an internal combustion engine, with a basic body (1), the interior of which is connected to a plurality of connection orifices (2), in each case an elongate connection piece (6) extending through the associated connection orifice (2) through the interior of the basic body (1) and being fastened on that side of the basic body (1) which is located opposite the connection orifice (2), at least one passage orifice (7) being provided in that portion of the connection piece (6) which is arranged in the interior of the basic body (1), characterized in that that end of the connection piece (6) which is located opposite the connection orifice (2) has formed on it an external thread (10) which cooperates with an internal thread (9) provided in a corresponding bore (8) in the basic body (1).
  2. High-pressure fuel accumulator according to Claim 1, characterized in that the connection piece (6) is supported on the outward-facing side of the connection orifice (2) and, in the assembled state, is subjected to tensile load.
  3. High-pressure fuel accumulator according to Claim 1 or 2, characterized in that the outward-facing end of the connection piece (6) has formed on it a cone (4) which cooperates with a complementary face (3) on the basic body (1) in the region of the associated connection orifice (2).
  4. High-pressure fuel accumulator according to one of the preceding claims, characterized in that the bore (8) is a blind-hole bore.
EP00969195A 1999-09-29 2000-08-19 High pressure fuel accumulator Expired - Lifetime EP1133634B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19946611 1999-09-29
DE19946611A DE19946611A1 (en) 1999-09-29 1999-09-29 High pressure fuel accumulator
PCT/DE2000/002839 WO2001023749A1 (en) 1999-09-29 2000-08-19 High pressure fuel accumulator

Publications (2)

Publication Number Publication Date
EP1133634A1 EP1133634A1 (en) 2001-09-19
EP1133634B1 true EP1133634B1 (en) 2005-05-04

Family

ID=7923685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00969195A Expired - Lifetime EP1133634B1 (en) 1999-09-29 2000-08-19 High pressure fuel accumulator

Country Status (5)

Country Link
US (1) US6793252B1 (en)
EP (1) EP1133634B1 (en)
JP (1) JP2003510512A (en)
DE (2) DE19946611A1 (en)
WO (1) WO2001023749A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6929288B2 (en) * 2001-12-20 2005-08-16 Usui Kokusai Sangyo Kaisha Limited Connecting structure of branch connector in fuel pressure accumulating container
JP2004092551A (en) * 2002-09-02 2004-03-25 Usui Kokusai Sangyo Kaisha Ltd Diesel common rail for engine
DE10309311B4 (en) * 2003-03-04 2005-01-05 Siemens Ag Fuel high pressure storage
DE102004036871A1 (en) * 2004-07-29 2006-02-16 Deutz Ag Container for internal combustion engine has inlet opening and a discharge opening with threaded ends for connection whereby branch connector behaves as connecting element

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190500810A (en) * 1905-01-16 1906-01-04 G And J Weir Ltd Improvements in and relating to Couplings and Fastenings for Steam Heating Tubes and the like.
US1767028A (en) * 1928-08-21 1930-06-24 George A Williams Water-sprinkling device
US2409262A (en) * 1943-10-18 1946-10-15 Autopulse Corp Manifold assembly
US2605140A (en) * 1950-03-01 1952-07-29 Dearborn Motors Corp Nozzle support for spray booms
US2674785A (en) * 1951-02-01 1954-04-13 Weatherhead Co Method of making fittings
US2846241A (en) * 1953-08-24 1958-08-05 Gen Motors Corp Pipe end to pipe side joint
US3219366A (en) * 1962-02-20 1965-11-23 Imp Eastman Corp Reinforced fluid control fitting
US4518033A (en) * 1979-02-02 1985-05-21 Josef Gartner & Co. Device for controlling the temperature of rooms in a building
US4711259A (en) * 1984-12-05 1987-12-08 Light Industrial Design Company Milk tank cleaning apparatus and method
JP2803383B2 (en) * 1991-04-08 1998-09-24 トヨタ自動車株式会社 High pressure fluid fittings
JPH08193554A (en) * 1995-01-17 1996-07-30 Keihin Seiki Mfg Co Ltd Fuel supply system in internal combustion engine
JP3371620B2 (en) * 1995-05-29 2003-01-27 いすゞ自動車株式会社 Common rail fuel injector
DE29521402U1 (en) * 1995-12-23 1997-04-24 Bosch Gmbh Robert Fuel injection system
JPH09303232A (en) * 1996-05-09 1997-11-25 Toyota Motor Corp Injection pipe connecting structure of common rail type diesel engine
GB9616678D0 (en) * 1996-08-08 1996-09-25 Eaton Williams Group Ltd Steam outlet assembly
US5979945A (en) * 1996-12-07 1999-11-09 Usuikokusai Sangyo Kaisha Ltd. Common rail
DE19744762A1 (en) * 1997-03-18 1998-10-01 Poppe & Potthoff Gmbh & Co Injection device for a diesel engine
EP0915252A3 (en) * 1997-11-05 2000-03-15 SIG Schweizerische Industrie-Gesellschaft Common rail fuel injection system
US6082397A (en) * 1998-09-18 2000-07-04 Harper-Wyman Company Gas manifold connector and gas distribution manifold assembly for gas stove
GB2358898B (en) * 1999-12-09 2002-04-24 Usui Kokusai Sangyo Kk Diesel engine fuel injection pipe

Also Published As

Publication number Publication date
DE19946611A1 (en) 2001-04-12
DE50010229D1 (en) 2005-06-09
JP2003510512A (en) 2003-03-18
US6793252B1 (en) 2004-09-21
WO2001023749A1 (en) 2001-04-05
EP1133634A1 (en) 2001-09-19

Similar Documents

Publication Publication Date Title
EP1117925B1 (en) High pressure fuel accumulator
EP3286428B1 (en) Fuel injector
DE102014204629A1 (en) Fuel injector, in particular common rail injector
EP2010779B1 (en) Device for securing high-pressure lines to a high pressure accumulator
EP1133634B1 (en) High pressure fuel accumulator
EP1797314B1 (en) Fuel injector on an internal combustion engine
EP1144854B1 (en) High pressure fuel storage device
DE102009028262A1 (en) High pressure loaded component i.e. fuel injector, pressure resistance increasing method for self-ignition internal combustion engine, involves producing autofrettage pressure of seven kilo bars inside assembly group
WO2001011226A1 (en) High-pressure fuel accumulator
DE102008017227A1 (en) Fluid system i.e. fuel supply system of common rail diesel injection system, has clamping unit displaced to seat region such that sealing force is introduced into clamping body by clamping unit
DE10132245A1 (en) Flameproof high pressure plenum
EP1118766B1 (en) Fuel injection system for internal combustion engine
EP1143136B1 (en) Fuel injector for internal combustion engines
EP1840366A2 (en) Fuel injector
WO2007033738A2 (en) Fuel distributor
EP3023758B1 (en) Fuel injector
DE10212002C1 (en) Fuel injector for IC engine has support sleeve around insert in housing bore for ensuring seal between coupling channel sections of modular injector
WO2004016937A1 (en) Fuel-injector comprising a connecting area that can withstand high pressure
DE102009038429A1 (en) Fuel injection system for internal-combustion engine, has high pressure pipe for fuel, where high pressure pipe has area wise plastic injection and is made up of high-grade steel
DE102012224226A1 (en) Fuel injector, particularly common rail injector for compression-ignition internal combustion engines, has closing element coupled with magnet armature through intermediate element, which has spherical bearing surface for closing element
EP1793119A1 (en) Fuel-injection unit for an internal combustion engine
EP1347168A2 (en) Injector for internal combustion engines
DE10300845A1 (en) Connection piece for high pressure screw connections
DE102011089130A1 (en) Fuel injection valve for common-rail injection system in internal combustion engine, has guide sleeve whose front sides lie opposite to each other and include radially rotating inner and outer bevels that are identically formed
WO2008012132A1 (en) Fuel injector

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20011005

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20040630

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050504

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050504

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50010229

Country of ref document: DE

Date of ref document: 20050609

Kind code of ref document: P

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20050504

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060301

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060207

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050504