EP1319827A2 - Electrovanne pour commander une soupape d'injection d'un moteur à combustion interne - Google Patents

Electrovanne pour commander une soupape d'injection d'un moteur à combustion interne Download PDF

Info

Publication number
EP1319827A2
EP1319827A2 EP02026671A EP02026671A EP1319827A2 EP 1319827 A2 EP1319827 A2 EP 1319827A2 EP 02026671 A EP02026671 A EP 02026671A EP 02026671 A EP02026671 A EP 02026671A EP 1319827 A2 EP1319827 A2 EP 1319827A2
Authority
EP
European Patent Office
Prior art keywords
valve
armature
solenoid valve
valve seat
base part
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Withdrawn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
EP02026671A
Other languages
German (de)
English (en)
Other versions
EP1319827A3 (fr
Inventor
Rainer Haeberer
Ralf Maier
Stefan Haug
Juergen Keinath
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 EP1319827A2 publication Critical patent/EP1319827A2/fr
Publication of EP1319827A3 publication Critical patent/EP1319827A3/fr
Withdrawn legal-status Critical Current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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention relates to a solenoid valve according to the Genus of claim 1.
  • Such a solenoid valve known from DE 197 01 879 A1 is used to control the fuel pressure in the control pressure chamber an injection valve, for example an injector a common rail injection system. at such injectors will check the fuel pressure controlled the movement of a valve piston in the control pressure chamber, with which an injection opening of the injection valve is opened or closed.
  • the well-known solenoid valve has an electromagnet arranged in the valve housing, one loaded by a closing spring, axially movable armature and a valve ball articulated to the armature on that with a valve seat of the solenoid valve interacts and so the fuel outflow from the control pressure chamber controls.
  • valve ball is held in a base part of the armature, that in the radial direction relative to an anchor plate the anchor is displaceable.
  • the anchor is in a mechanical Armature guide of the valve housing axially displaceable stored, which causes friction losses, which at Design of the overall system must be taken into account.
  • installation of the anchor guide in the Valve housing a mechanically quite complex overall structure required.
  • the valve member is preferably designed as a valve ball, the between the conical valve seat and one to Valve seat open centering of the armature axially is slidably mounted. Because the anchor has a stroke of only 40 ⁇ m, the valve ball is between the conical Valve seat and the inclusion of the armature axially displaceable held and found again with every switching operation exactly in the valve seat. That way abrasion of the spring on the magnetic core can be avoided that constant friction ratios over the term given are.
  • the reception of the armature is preferably dome-shaped, in particular hemispherical. Furthermore, the One-piece or two-piece anchor with one in one Anchor plate formed axially displaceably guided base part his.
  • Fig. 1 shows the upper part of an injection valve 1 , which is intended for use in a fuel injection system, in particular a common rail system for diesel fuel, which is equipped with a high-pressure fuel reservoir, which is continuously supplied with high-pressure fuel by a high-pressure feed pump.
  • the injection valve 1 has a valve housing 2 with a valve piece 3 , in the guide bore 4 of which a valve piston 5 is arranged so as to be axially displaceable, which acts with its lower end (not shown in FIG. 1) on a valve needle arranged in a nozzle body.
  • the valve needle is arranged in a pressure chamber, which is supplied with fuel under high pressure via a pressure bore.
  • the valve needle is raised against the closing force of a spring (not shown) by the high fuel pressure in the pressure chamber constantly acting on a pressure shoulder of the valve needle.
  • the fuel is then injected into the combustion chamber of the internal combustion engine through an injection opening which is then connected to the pressure chamber.
  • valve piston 5 By lowering the valve piston 5, the valve needle is pressed into a valve seat of the injection valve 1 in the closing direction and the injection process is thereby ended.
  • the end face of the valve piston 5 facing away from the valve needle delimits in the guide bore 4 a control pressure chamber 6 which is connected via an inlet channel 7 to a high-pressure fuel connection, not shown, and is therefore exposed to the high fuel pressure prevailing in the high-pressure accumulator.
  • Coaxial to the valve piston 5 branches off from the control pressure chamber 6 from a bore 8 extending in the valve piece 3, which merges into a fuel outlet channel 10 via an outlet throttle 9.
  • This fuel drain channel 10 opens into a relief chamber 11 , which is connected to a low-pressure fuel connection, not shown.
  • the fuel drain channel 10 emerges from the valve piece 3 in the region of the conically countersunk upper end face of the valve piece 3, which forms a conical valve seat 12 ( FIG. 2 ) for the valve member 13 of a solenoid valve which controls the injection valve 1 and is designed as a valve ball.
  • the valve member 13 is captively held between the valve seat 12 of the valve piece 3 and an armature 14 , which is axially movably mounted in the relief chamber 11 and is acted upon in the closing direction by a closing spring 15 , the armature 14 in the relief chamber 11 having neither an axial nor a radial guide ,
  • the armature 14 is formed in one piece with an anchor plate 16 and a base part 17 , which has a dome-shaped centering receptacle 18 for the valve member 13 on its underside.
  • the armature 14 and with it the valve member 13 are constantly acted upon in the closing direction by the closing spring 15 which is supported on the housing, so that the valve member 13 normally bears against the valve seat 12 in the closed position.
  • the armature 14 passes through that in the dome-shaped centering 18 radially centered valve member 13 each time radially in the valve seat 12 fixed and thus prevented from radially wandering away.
  • the anchor 14 makes a stroke of only about 40 microns, that is Valve member 13 between the conical valve seat 12 and the dome-shaped centering receptacle 18 of the armature 18 cannot be lost, but held axially displaceable and finds with every switching operation exactly in the valve seat 12.
  • the armature 114 is formed in two parts with an armature plate 116 and with the base part 117 , which is axially displaceably guided in a blind hole of the armature plate 116.
  • the closing spring 15 is supported on the anchor plate 16, the base part 117 being pressed permanently into the blind hole due to the flow forces.
  • FIG. 4 shows a further exemplary embodiment of the solenoid valve, in which the base part 217 of the armature 214 is guided in an axially displaceable manner in a through bore 220 of the armature plate 216 and the closing spring 15 acts on the base part 217.
  • the anchor plate 216 engages behind the base part 217 in the closing direction and is therefore coupled to this movement in the opening direction.
  • the anchor plate 216 is held in contact with the base part 217 by a soft compression spring 221 which is arranged in the relief chamber 11 and is supported on the valve piece 3 and is thus secured against falling off.
  • the armature 314 is formed in one piece with the armature plate 316 , base part 317 and hemispherical valve member 313 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
EP02026671A 2001-12-12 2002-11-29 Electrovanne pour commander une soupape d'injection d'un moteur à combustion interne Withdrawn EP1319827A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10161002 2001-12-12
DE2001161002 DE10161002A1 (de) 2001-12-12 2001-12-12 Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1319827A2 true EP1319827A2 (fr) 2003-06-18
EP1319827A3 EP1319827A3 (fr) 2004-12-29

Family

ID=7708921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026671A Withdrawn EP1319827A3 (fr) 2001-12-12 2002-11-29 Electrovanne pour commander une soupape d'injection d'un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP1319827A3 (fr)
JP (1) JP2003193939A (fr)
DE (1) DE10161002A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1775461A1 (fr) * 2005-10-14 2007-04-18 Denso Corporation Soupape de régulation de pression et système d'injection de carburant
WO2007065746A1 (fr) * 2005-12-05 2007-06-14 Robert Bosch Gmbh Soupape d'injection de carburant
WO2007128612A1 (fr) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Injecteur de carburant comportant une soupape de commande à compensation de pression
WO2007147667A1 (fr) * 2006-06-23 2007-12-27 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteur à combustion interne
WO2009068414A1 (fr) * 2007-11-26 2009-06-04 Robert Bosch Gmbh Buse d'injection de carburant comprenant une soupape à bille
WO2013172764A1 (fr) * 2012-05-16 2013-11-21 Scania Cv Ab Soupape pour système de carburant pour moteur à combustion et procédé de commande d'un système de carburant pour moteur à combustion
WO2021121971A1 (fr) * 2019-12-18 2021-06-24 Robert Bosch Gmbh Injecteur de carburant pour injecter du carburant

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4064934B2 (ja) 2004-02-27 2008-03-19 三菱重工業株式会社 電磁弁装置
JP2013174158A (ja) * 2012-02-24 2013-09-05 Nabtesco Corp 電磁弁

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701879A1 (de) 1997-01-21 1998-07-23 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0338540Y2 (fr) * 1987-03-30 1991-08-14
IT1232026B (it) * 1989-02-28 1992-01-23 Weber Srl Dispositivo di iniezione del combustibile ad azionamento elettromagne tico per motori a ciclo diesel
DE4024054A1 (de) * 1990-07-28 1992-01-30 Bosch Gmbh Robert Magnetsystem
IT1276503B1 (it) * 1995-07-14 1997-10-31 Elasis Sistema Ricerca Fiat Perfezionamenti ad una valvola di dosaggio a comando elettromagnetico, per un iniettore di combustibile.
FI101738B1 (fi) * 1996-01-30 1998-08-14 Waertsilae Nsd Oy Ab Ruiskutusventtiilijärjestely
IT1296144B1 (it) * 1997-11-18 1999-06-09 Elasis Sistema Ricerca Fiat Valvola di dosaggio registrabile per un iniettore di combustibile per motori a combustione interna.
US6050496A (en) * 1998-12-17 2000-04-18 Caterpillar Inc. Rotational actuation fluid control valve for a hydraulically actuated fuel injector
DE19915686A1 (de) * 1999-04-07 2000-10-12 Delphi Tech Inc Schaltventil
DE19937559A1 (de) * 1999-08-09 2001-03-01 Bosch Gmbh Robert Zweistufiges Magnetventil in kompakter Bauweise für einen Injektor eines Einspritzsystems für Brennkraftmaschinen
DE10131201A1 (de) * 2001-06-28 2003-01-16 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701879A1 (de) 1997-01-21 1998-07-23 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1775461A1 (fr) * 2005-10-14 2007-04-18 Denso Corporation Soupape de régulation de pression et système d'injection de carburant
US7712453B2 (en) 2005-10-14 2010-05-11 Denso Corporation Depressurizing valve and fuel injection device
WO2007065746A1 (fr) * 2005-12-05 2007-06-14 Robert Bosch Gmbh Soupape d'injection de carburant
US8371516B2 (en) 2006-05-10 2013-02-12 Robert Bosch Gmbh Fuel injector with a pressure-compensated control valve
WO2007128612A1 (fr) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Injecteur de carburant comportant une soupape de commande à compensation de pression
CN101490405B (zh) * 2006-05-10 2012-04-18 罗伯特·博世有限公司 具有压力平衡的控制阀的燃料喷射器
WO2007147667A1 (fr) * 2006-06-23 2007-12-27 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteur à combustion interne
US8413637B2 (en) 2007-11-26 2013-04-09 Robert Bosch Gmbh Injection nozzle for fuel with ball valve
WO2009068414A1 (fr) * 2007-11-26 2009-06-04 Robert Bosch Gmbh Buse d'injection de carburant comprenant une soupape à bille
WO2013172764A1 (fr) * 2012-05-16 2013-11-21 Scania Cv Ab Soupape pour système de carburant pour moteur à combustion et procédé de commande d'un système de carburant pour moteur à combustion
CN104285057A (zh) * 2012-05-16 2015-01-14 斯堪尼亚商用车有限公司 用于燃烧发动机的燃料系统的阀和控制燃烧发动机的燃料系统的方法
KR20150006885A (ko) * 2012-05-16 2015-01-19 스카니아 씨브이 악티에볼라그 연소 엔진용 연료 시스템을 위한 밸브 및 연소 엔진용 연료 시스템을 제어하기 위한 방법
EP2850311A4 (fr) * 2012-05-16 2016-01-13 Scania Cv Ab Soupape pour système de carburant pour moteur à combustion et procédé de commande d'un système de carburant pour moteur à combustion
KR101626535B1 (ko) 2012-05-16 2016-06-13 스카니아 씨브이 악티에볼라그 연소 엔진용 연료 시스템을 위한 밸브 및 연소 엔진용 연료 시스템을 제어하기 위한 방법
CN104285057B (zh) * 2012-05-16 2017-07-18 斯堪尼亚商用车有限公司 用于燃烧发动机的燃料系统的阀和控制燃烧发动机的燃料系统的方法
US9964089B2 (en) 2012-05-16 2018-05-08 Scania Cv Ab Valve for a fuel system for a combustion engine and method for controlling a fuel system for a combustion engine
WO2021121971A1 (fr) * 2019-12-18 2021-06-24 Robert Bosch Gmbh Injecteur de carburant pour injecter du carburant

Also Published As

Publication number Publication date
JP2003193939A (ja) 2003-07-09
DE10161002A1 (de) 2003-07-03
EP1319827A3 (fr) 2004-12-29

Similar Documents

Publication Publication Date Title
EP1332282B1 (fr) Electrovanne pour piloter une soupape d'injection de moteur a combustion interne
EP2092187B1 (fr) Injecteur pour l'injection de carburant
EP2102486B1 (fr) Injecteur avec une soupape de commande à compensation de pression axiale
WO2009121646A1 (fr) Électrovanne avec induit en plusieurs parties, sans guidage de l'induit
EP2100026B1 (fr) Injecteur de carburant avec électrovanne à siège sphérique
EP2078157B1 (fr) Injecteur de carburant comprenant une plaque d'étranglement et une vanne magnétique
EP1944500A2 (fr) Injecteur de carburant
WO2008061844A1 (fr) Injecteur de carburant
WO2000019089A1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP1319827A2 (fr) Electrovanne pour commander une soupape d'injection d'un moteur à combustion interne
EP2084392A1 (fr) Injecteur de carburant
WO2008049671A1 (fr) Injecteur de carburant
EP1939441A2 (fr) Injecteur de carburant
EP2011995A2 (fr) Injecteur doté d'un élément d'aération s'ouvrant vers l'extérieur
WO2010009925A1 (fr) Goujon d’induit pour vanne électromagnétique
WO2008049668A1 (fr) Injecteur d'injection de carburant dans des chambres de combustion de moteurs à combustion interne
DE19936943A1 (de) Brennstoffeinspritzventil
WO2008061842A1 (fr) Injecteur de carburant
EP2156044B1 (fr) Injecteur comprenant une soupape de commande à compensation de pression
WO2008148643A1 (fr) Injecteur
DE10254750A1 (de) Kraftstoffeinspritzvorrichtung mit einem kraftausgeglichenen 3/2-Wege-Steuerventil
DE102007018472A1 (de) Kraftstoffinjektor mit Magnetventil
DE102007047129A1 (de) Injektor mit hülsenförmigem Steuerventilelement
DE10119602A1 (de) Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE102007001365A1 (de) Injektor mit Steuer- und Schaltkammer

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

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

AX Request for extension of the european patent

Extension state: 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 BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7F 02M 47/02 B

Ipc: 7F 02M 59/46 A

17P Request for examination filed

Effective date: 20050629

AKX Designation fees paid

Designated state(s): DE FR GB IT

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: 20060429