EP1766227A1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant

Info

Publication number
EP1766227A1
EP1766227A1 EP05740259A EP05740259A EP1766227A1 EP 1766227 A1 EP1766227 A1 EP 1766227A1 EP 05740259 A EP05740259 A EP 05740259A EP 05740259 A EP05740259 A EP 05740259A EP 1766227 A1 EP1766227 A1 EP 1766227A1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel injection
guide sleeve
valve member
seat surface
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.)
Withdrawn
Application number
EP05740259A
Other languages
German (de)
English (en)
Inventor
Bernd Dittus
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 EP1766227A1 publication Critical patent/EP1766227A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size

Definitions

  • the invention is based on a fuel injection valve according to the preamble of patent claim 1.
  • Such a fuel injection valve has become known, for example, from WO 99/19619 A1.
  • the fuel injection valve known from WO 99/19619 A1 has a valve member axially displaceable valve member, which is guided with a sleeve-shaped guide lug on the free end of a sleeve-shaped pin (guide sleeve) slidable.
  • the stationary at the other end held guide sleeve extends to form an annular space in a bore of the valve body.
  • the guide projection of the valve member and the guide sleeve define an interior, which is acted upon via the through hole of the guide sleeve with a control pressure.
  • a high-pressure line opens into the annular space, which leads to the valve seat surface of the valve member.
  • the valve member has a pressure shoulder in the annular space, at which the pressure prevailing in the annular space pressure acts in the opening direction, while the prevailing in the interior control pressure acts on the valve member in the closing direction.
  • the opening movement of the valve member is controlled hydraulically via the control pressure prevailing in the interior. If the pressure prevailing in the annular space sufficient to pride horrn the valve member against the action of a closing spring and the control pressure, the injection takes place with the pressure prevailing in the annulus fuel pressure.
  • the guide sleeve is an insert body which clamps between the valve body and a valve holding body is and over which the high pressure line opens into the annulus.
  • the insert body has an annular shoulder on which the closing spring is supported.
  • the fuel injection valve according to the invention for internal combustion engines with the characterizing features of claim 1 has the advantage that the guide sleeve is only used to guide the valve member and that the closing spring can be arranged outside of the valve body by the push rod.
  • the push rod in the valve sleeve holder has no sealing or carrying away function, but controls only the opening movement of the valve member.
  • the force acting in the closing direction of the push rod can be generated by a closing spring at its end remote from the combustion chamber rod end, by acting on the push rod hydraulic closing force or by a combination thereof.
  • Fig. 1 shows a first embodiment of the invention
  • FIG. 2 is an enlarged sectional view of that shown in Fig. 1
  • Fig. 3 shows a second embodiment of the invention
  • Fig. 4 is an enlarged sectional view of that shown in Fig. 3
  • the fuel injection valve for internal combustion engines shown in Fig. 1 has a cylindrical valve body 1, which projects with its free lower end into a combustion chamber not shown in detail of the engine to be supplied.
  • the valve body 1 is clamped by means of a clamping nut (not shown) axially against a valve holding body 2.
  • An axial guide sleeve 3 is in an axial
  • Bore 4 of the valve body 1 is arranged to form an annular gap 5 and pressed firmly at its upper end in a bore of the valve holding body 2.
  • a valve member 6 is guided with a sleeve-shaped projection 7 (Fig.2a) on the free end of the guide sleeve 3 slidable.
  • the valve member 6 has a conical valve sealing surface 8, which cooperates with a conical valve seat surface 9 (FIG. 2 b) on the valve body 1. Downstream of the valve seat surface 9 injection openings 10 are provided, which open in the combustion chamber.
  • a push rod 11 which is axially displaceable (double arrow 12) to control the opening movement of the valve member 6.
  • the push rod 11 rests with its lower end on the valve member 6 and is biased in the closing direction by a force acting on its upper end closing force, for example, by a closing spring (not shown) or by a hydraulic control pressure is generated.
  • a high-pressure line 13 opens into the annular gap 5, which leads to the valve seat surface 9.
  • the cone angle of valve sealing surface 8 and valve seat 9 are different, so that the valve sealing surface 8 in the annular gap 5 also forms a pressure shoulder on which engages the prevailing pressure in the annular gap 5 in the opening direction.
  • Fig. 2a shows the closed valve position in which the valve member 6 is pressed with its valve sealing surface 8 by the push rod 11 against the valve seat surface 9 and the injection openings 10 provided there closes.
  • the maximum opening stroke h max of the valve member 5 is defined by axial abutment of the valve member 5 on the guide sleeve 3.
  • valve sealing surface 8 is shown in FIGS. 1 and 2 formed as a conical surface, but may also be designed as a double cone surface, in which the more acute cone angle at the free end corresponds to the cone angle of the valve seat surface 9
  • the fuel injection valve shown in Figure 3 differs in that the guide sleeve 3 in the valve holding body 19 is axially displaceable (double arrow 20) is guided, that the push rod 11 the
  • Opening movement of an inner valve member 21 (Fig.4a) and the guide sleeve 3 controls the opening movement of a sleeve-shaped outer valve member 22 and that first and second injection openings 23, 24 are provided.
  • the inner valve member 21 is axially slidable * guided in the outer valve member 22 and has a conical valve sealing surface 25 which cooperates with a conical valve seat surface 26 on the valve body 1.
  • the outer valve member 22 is axially slidably guided with a sleeve-shaped guide projection 27 on the guide sleeve 3 and has a conical valve sealing surface 28 which cooperates with the conical valve seat surface 26 on the valve body 1.
  • the cone angles of valve sealing surface 28 and valve seat surface 26 are different, so the
  • Valve sealing surface 28 in the annular gap 5 also forms a pressure shoulder, which engages in the annular gap 5 prevailing pressure in the opening direction.
  • the cone angles of the valve sealing surface 25 and valve seat surface 26 are also different so that when the outer valve member 22 is lifted from its valve seat, the Valve sealing surface 25 in the annular gap 5 also forms a pressure shoulder, which engages in the annular gap 5 prevailing pressure in the opening direction.
  • the push rod 11 rests with its lower end on the inner valve member 21 and is biased in the closing direction via a force acting on its upper end closing force, for example, by a closing spring (not shown) or by a hydraulic control pressure is generated.
  • the guide sleeve 3 rests with its lower end face on an annular shoulder 29 of the outer valve member 22 and is biased in the closing direction by acting on its upper end closing force, for example, by a closing spring (not shown) or by a hydraulic control pressure is generated.
  • FIG. 4a shows the closed valve position, in which the outer valve member 22 are pressed by the guide sleeve 3 and the inner valve member 21 by the push rod 11 against the valve sealing surface 8 and close the injection openings 23, 24 provided there. If the pressure prevailing in the annular space 5 fuel pressure sufficient, the outer valve member 22 against the closing force of
  • the injection takes place with the pressure prevailing in the annular gap 5 fuel pressure on the shared upper injection ports 24.
  • the maximum stroke hi, ma ⁇ of the outer valve member 22 is shown in Fig. 3. If the pressure prevailing in the annular space 5 fuel pressure is also sufficient to control the inner valve member 21 against the closing force of the push rod 11 in the fully open valve position shown in Figure 4c, the injection takes place with the pressure prevailing in the annular gap 5 fuel pressure on the shared upper and lower injection openings 23rd , 24.
  • the maximum stroke h 2 , max of the inner valve member 21 is defined by contact with the outer valve member 22 and hi jmax .
  • valve sealing surface 25 is shown in FIGS. 3 and 4 designed as conical surface, but can also be designed as a double cone surface, in which the more acute cone angle at the free end corresponds to the cone angle of the valve seat surface 26.

Landscapes

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

Abstract

Soupape d'injection de carburant pour moteurs à combustion interne qui possède au moins un obturateur (6) de soupape axialement coulissant dans un corps (1) de soupape. Ledit obturateur est guidé sur un manchon de guidage (3) et possède, à son extrémité orientée vers la chambre de combustion du moteur à combustion interne, une surface d'étanchéité (8) coopérant avec une surface de siège (9) de soupape située sur le corps (1) de soupape, et au moins un orifice d'injection (10) situé en aval, dans le sens d'écoulement, de la surface de siège (9) de soupape et s'ouvrant dans la chambre de combustion du moteur à combustion interne. Selon la présente invention, une tige de compression (11), qui est placée axialement coulissante dans le manchon de guidage (3), commande le mouvement de l'obturateur (6) de soupape. Le manchon de guidage (3) peut être conçu de manière à être axialement coulissant et commander un obturateur (22) de soupape externe en forme de manchon.
EP05740259A 2004-07-02 2005-05-11 Soupape d'injection de carburant Withdrawn EP1766227A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004032181A DE102004032181A1 (de) 2004-07-02 2004-07-02 Kraftstoffeinspritzventil
PCT/EP2005/052139 WO2006003047A1 (fr) 2004-07-02 2005-05-11 Soupape d'injection de carburant

Publications (1)

Publication Number Publication Date
EP1766227A1 true EP1766227A1 (fr) 2007-03-28

Family

ID=34966618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05740259A Withdrawn EP1766227A1 (fr) 2004-07-02 2005-05-11 Soupape d'injection de carburant

Country Status (5)

Country Link
US (1) US20070204834A1 (fr)
EP (1) EP1766227A1 (fr)
CN (1) CN1977106A (fr)
DE (1) DE102004032181A1 (fr)
WO (1) WO2006003047A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061400A1 (de) * 2008-12-10 2010-06-17 Man Diesel Se Kraftstoff-Einspritzventil für eine Brennkraftmaschine
WO2012038984A2 (fr) * 2010-09-24 2012-03-29 International Engine Intellectual Property Company, Llc Gicleur de carburant en deux parties pour un injecteur

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987006650A1 (fr) * 1986-04-25 1987-11-05 Voest-Alpine Automotive Gesellschaft M.B.H. Injecteur pour moteurs a combustion interne
DE19744518A1 (de) 1997-10-09 1999-04-15 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
EP0967382B1 (fr) * 1998-06-24 2004-11-24 Delphi Technologies, Inc. Injecteur de carburant
US6761325B2 (en) * 1998-09-16 2004-07-13 Westport Research Inc. Dual fuel injection valve and method of operating a dual fuel injection valve
GB9914642D0 (en) * 1999-06-24 1999-08-25 Lucas Ind Plc Fuel injector
DE10002109A1 (de) * 2000-01-19 2001-08-02 Bosch Gmbh Robert Einspritzsystem
JP3882680B2 (ja) * 2001-11-16 2007-02-21 株式会社デンソー 燃料噴射ノズル
JP3865222B2 (ja) * 2002-03-05 2007-01-10 株式会社デンソー 燃料噴射装置
US7134615B2 (en) * 2002-07-31 2006-11-14 Caterpillar Inc Nozzle insert for mixed mode fuel injector
US6769635B2 (en) * 2002-09-25 2004-08-03 Caterpillar Inc Mixed mode fuel injector with individually moveable needle valve members
US20050224605A1 (en) * 2004-04-07 2005-10-13 Dingle Philip J Apparatus and method for mode-switching fuel injector nozzle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006003047A1 *

Also Published As

Publication number Publication date
DE102004032181A1 (de) 2006-01-19
US20070204834A1 (en) 2007-09-06
CN1977106A (zh) 2007-06-06
WO2006003047A1 (fr) 2006-01-12

Similar Documents

Publication Publication Date Title
EP2183476B1 (fr) Soupape d'injection de carburant avec une étanchéité améliorée au niveau du siège d'étanchéité d'une soupape de commande à pression compensée
EP1446571A1 (fr) Soupape d'injection de carburant pour des moteurs a combustion interne
DE102006057935A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
EP1518049B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP1627147B1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
DE10210927A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
EP2156045B1 (fr) Injecteur
DE19940300A1 (de) Steuerventil für einen Injektor
EP1766227A1 (fr) Soupape d'injection de carburant
DE19929473B4 (de) Kraftstoffeinspritzventil
DE102006050042A1 (de) Injektor zur Einspritzung von Kraftstoff in Brennräume von Brennkraftmaschinen
DE10019153A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102006050033A1 (de) Injektor, insbesondere Common-Rail-Injektor
DE10029629A1 (de) Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10305509A1 (de) Kraftstoffeinspritzventil für eine Brennkraftmaschine
DE10259169A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschine
WO2002023037A1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP3184803B1 (fr) Injecteur de carburant
DE19929881A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102014211469A1 (de) Düsenbaugruppe für einen Kraftstoffinjektor sowie Kraftstoffinjektor
DE19611872A1 (de) Kraftstoffeinspritzventil für Brennkraftmaschinen
WO2018141335A1 (fr) Injecteur de carburant conçu pour un moteur à combustion interne
DE102009026461A1 (de) Kraftstoffinjektor für eine Brennkaftmaschine
EP2084390A1 (fr) Injecteur avec une soupape de commande à compensation de pression axiale
WO2018153740A1 (fr) Soupape d'injection de carburant pour injecter un carburant gazeux et/ou liquide

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

17P Request for examination filed

Effective date: 20070202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20090803

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20091201