EP1108886B1 - Systeme d'injection de carburant avec un common rail - Google Patents

Systeme d'injection de carburant avec un common rail Download PDF

Info

Publication number
EP1108886B1
EP1108886B1 EP00124776A EP00124776A EP1108886B1 EP 1108886 B1 EP1108886 B1 EP 1108886B1 EP 00124776 A EP00124776 A EP 00124776A EP 00124776 A EP00124776 A EP 00124776A EP 1108886 B1 EP1108886 B1 EP 1108886B1
Authority
EP
European Patent Office
Prior art keywords
rail
cylinder head
injector
pressure tube
claw
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
EP00124776A
Other languages
German (de)
English (en)
Other versions
EP1108886A2 (fr
EP1108886A3 (fr
Inventor
Heribert Dipl.-Ing. Möller (FH)
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP1108886A2 publication Critical patent/EP1108886A2/fr
Publication of EP1108886A3 publication Critical patent/EP1108886A3/fr
Application granted granted Critical
Publication of EP1108886B1 publication Critical patent/EP1108886B1/fr
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
    • 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
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • 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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors

Definitions

  • the invention relates to a common rail injection system according to the preamble of claim 1.
  • a common rail injection system in which an injector Located in the cylinder axis is arranged centrally in the cylinder head.
  • the connection the injector with the fuel-carrying rail is produced via a pressure tube, which is arranged in a transverse bore in the cylinder head.
  • the Pressure tube has at its two ends sealing surfaces on the means of a claw and a screw in the cylinder head are kept under tension.
  • the claw itself has a hole and is connected via a screw with the rail. to easier mounting has the screw at its ends a right and a left-handed thread on.
  • an injection system of the type mentioned are several Components required and the claws require an angled bore to unwanted Reflections of pressure waves can give rise.
  • the invention is based on the object the compound of common rail and injector with as few components as possible and as easy to assemble as possible.
  • the object is firstly by the characterizing features of claim 1 solved.
  • the structural unit of Rail and Pratze requires fewer parts and the Assembly easier.
  • the fuel reaches the shortest path and straight to the injector, whereby reflections of pressure waves at deflections and the like be avoided.
  • FIG. 1 shows a side view of a cylinder head 1.
  • a rail. 2 fastened directly by means of screws 3 and claws 4.
  • the claws 4 associated with each injector 5 form a structural unit with the rail 2, for example, a forging. This is described in more detail in FIG.
  • FIG. 2 shows a section II-II according to FIG. 3.
  • the injector 5 is located in a bore of the cylinder head 1.
  • the fuel supply to the injector 5 via the rail 2 and a pressure tube 6, which in a Bore is arranged transversely through the cylinder head 1.
  • a flow restrictor 7 is provided, the threaded 8 into the Rail 2 is screwed, this is not upper part of the invention.
  • the attachment serve each injector 5 (Fig. 1) a claw 4 with the Rail 2 is combined to form a structural unit.
  • Rail 2 and the claws 4 can be advantageously designed as a forged part.
  • To the claw 4 and the Giving Rail 2 a certain amount of spherical motion is a counter bearing formed on the cylinder head as a dome 9.
  • FIG. 3 A plan view of a part of the cylinder head 1 is shown in FIG. 3.
  • the rail 2 is ever an injector 5 fixed directly to the cylinder head 1 by means of screw 3 and claw 4.
  • the Fuel supply from the rail 2 to the injector takes place through the pressure pipe 6 (FIG. 2), which is indicated here only by a dashed line.
  • FIG 4. An end view is shown in FIG 4.
  • the Rail 2 forms with the claw 4 a structural Unit which is fastened with screw 3 on the cylinder head 1.
  • the Rail 2 can also be used with single 4 pcs Cylinder head to be attached. An advantage of this attachment can be seen therein be that the rail 2 can remain unchanged.

Landscapes

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

Claims (2)

  1. Système d'injection Common Rail, composé d'un injecteur (5) disposé dans la tête de cylindre (1), un rail (2) pour l'amenée de carburant et une conduite de refoulement qui relie le rail et l'injecteur, la conduite de refoulement (6) étant introduite dans la tête de cylindre par un alésage et l'étanchéité étant obtenue aux deux extrémités de la conduite de refoulement par la pression d'une fourche (4) qui est fixée au moyen d'une vis (3) sur la tête de cylindre, le rail (2) étant fixé directement avec la vis (3) et la fourche (4) sur la tête de cylindre (1) et le rail (2) et la fourche (3) formant une unité en construction, par exemple une pièce forgée,
    caractérisé en ce que
    le rail est relié directement à la conduite de refoulement (6).
  2. Système d'injection Common Rail, composé d'un injecteur (5) disposé dans la tête de cylindre (1), un rail (2) pour l'amenée de carburant et une conduite de refoulement qui relie le rail et l'injecteur, la conduite de refoulement (6) étant introduite dans la tête de cylindre par un alésage et l'étanchéité étant obtenue aux deux extrémités de la conduite de refoulement par la pression d'une fourche (4) qui est fixée au moyen d'une vis (3) sur la tête de cylindre, le rail (2) étant fixé directement sur la tête de cylindre (1) et le rail (2) étant fixé sur la tête de cylindre (1) par une fourche (4) distincte et une vis (3),
    caractérisé en ce que
    le rail est relié directement à la conduite de refoulement (6).
EP00124776A 1999-12-15 2000-11-14 Systeme d'injection de carburant avec un common rail Expired - Lifetime EP1108886B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19960480 1999-12-15
DE19960480A DE19960480A1 (de) 1999-12-15 1999-12-15 Common Rail Einspritzsystem

Publications (3)

Publication Number Publication Date
EP1108886A2 EP1108886A2 (fr) 2001-06-20
EP1108886A3 EP1108886A3 (fr) 2003-11-26
EP1108886B1 true EP1108886B1 (fr) 2005-01-19

Family

ID=7932750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124776A Expired - Lifetime EP1108886B1 (fr) 1999-12-15 2000-11-14 Systeme d'injection de carburant avec un common rail

Country Status (2)

Country Link
EP (1) EP1108886B1 (fr)
DE (2) DE19960480A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE530761T1 (de) 2007-09-13 2011-11-15 Ganser Hydromag Brennstoffeinspritzvorrichtung
US7543567B2 (en) * 2007-10-29 2009-06-09 Caterpillar Inc. Fuel system having a one-piece hollow tube connection
ATE527444T1 (de) * 2007-11-13 2011-10-15 Delphi Tech Holding Sarl Brennstofflanze

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539959A (en) * 1984-02-27 1985-09-10 General Motors Corporation Fuel injection system with fuel flow limiting valve assembly
JP3371620B2 (ja) * 1995-05-29 2003-01-27 いすゞ自動車株式会社 コモンレール式燃料噴射装置
DE19640480B4 (de) * 1996-09-30 2004-04-22 Robert Bosch Gmbh Kraftstoffhochdruckspeicher
DE19754132B4 (de) * 1997-12-05 2005-06-23 Man Nutzfahrzeuge Ag Common Rail Einspritzsystem für Brennkraftmaschinen

Also Published As

Publication number Publication date
EP1108886A2 (fr) 2001-06-20
DE19960480A1 (de) 2001-06-21
EP1108886A3 (fr) 2003-11-26
DE50009273D1 (de) 2005-02-24

Similar Documents

Publication Publication Date Title
EP0461212B1 (fr) Pompe d'injection de carburant a commande electrique pour moteurs a combustion interne, en particulier pompe d'injection combinee avec l'injecteur
DE4239173C1 (en) Cylinder-head for fuel-injection engine - has pressure pipe passing through clamping screw and with union at protruding end for injection pipe
DE3323010C2 (fr)
DE3223556C2 (fr)
DE112017005337B4 (de) Montagestruktur für Kraftstoffverteilerleitung
DE2743244C2 (de) Pumpdüse für die Kraftstoffeinspritzung bei Brennkraftmaschinen
DE202015105989U1 (de) Kraftstoffverteiler
EP0075659A2 (fr) Moteur à combustion à quatre cylindres
EP1108886B1 (fr) Systeme d'injection de carburant avec un common rail
WO2019166670A1 (fr) Dispositif de distribution d'un système d'injection directe à rampe commune
DE2143476A1 (de) Einrichtung zur Messung des Druckes in Einspritzleitungen
DE102004037117B4 (de) Einspritzventil sowie ein Verfahren zur Befestigung dieses Einspritzventils an einer Brennkraftmaschine
EP0879351B1 (fr) Systeme d'admission
EP2905461B1 (fr) Installation d'injection de carburant dotée d'un composant destiné à guider le carburant, d'une soupape d'injection de carburant et d'un support
EP3042067B1 (fr) Support et système muni d'une rampe de distribution de carburant et de plusieurs supports
DE102006014767A1 (de) Kraftstoffeinspritzeinrichtung für eine mehrzylindrige Brennkraftmaschine
DE19739810C1 (de) Einspritzsystem für eine Brennkraftmaschine
DE3907958A1 (de) Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE19734669A1 (de) Kraftstoffeinspritzanlage für eine mehrzylindrige Brennkraftmaschine
DE10322769A1 (de) Vorrichtung zum Zuführen von Kraftstoff zu Einspritzventilen
DE19601496C2 (de) Anschluß einer Einspritzleitung an ein Druckrohr eines Einspritzventils
DE10132245A1 (de) Druckfester Hochdrucksammelraum
DE102006054064A1 (de) Kraftstoffinjektor
DE19754132A1 (de) Common Rail Einspritzsystem für Brennkraftmaschinen
EP1347168B1 (fr) Injecteur pour moteurs à combustion interne

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: A2

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

AX Request for extension of the european patent

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20031212

17Q First examination report despatched

Effective date: 20040123

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): DE FR GB IT NL SE

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 NL SE

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: GERMAN

REF Corresponds to:

Ref document number: 50009273

Country of ref document: DE

Date of ref document: 20050224

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050422

ET Fr: translation filed
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: 20051020

REG Reference to a national code

Ref country code: NL

Ref legal event code: TD

Effective date: 20110304

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50009273

Country of ref document: DE

Owner name: MAN TRUCK & BUS AG, DE

Free format text: FORMER OWNER: MAN NUTZFAHRZEUGE AG, 80995 MUENCHEN, DE

Effective date: 20110406

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 50009273

Country of ref document: DE

Owner name: MAN TRUCK & BUS SE, DE

Free format text: FORMER OWNER: MAN TRUCK & BUS AG, 80995 MUENCHEN, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20191127

Year of fee payment: 20

Ref country code: SE

Payment date: 20191125

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20191127

Year of fee payment: 20

Ref country code: IT

Payment date: 20191122

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20191128

Year of fee payment: 20

Ref country code: DE

Payment date: 20200130

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50009273

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20201113

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20201113

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 EXPIRATION OF PROTECTION

Effective date: 20201113