[go: up one dir, main page]

WO2009071401A1 - Dispositif d'injection compact doté de deux armatures - Google Patents

Dispositif d'injection compact doté de deux armatures Download PDF

Info

Publication number
WO2009071401A1
WO2009071401A1 PCT/EP2008/064846 EP2008064846W WO2009071401A1 WO 2009071401 A1 WO2009071401 A1 WO 2009071401A1 EP 2008064846 W EP2008064846 W EP 2008064846W WO 2009071401 A1 WO2009071401 A1 WO 2009071401A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
injection device
fuel pump
working gap
seal
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.)
Ceased
Application number
PCT/EP2008/064846
Other languages
German (de)
English (en)
Inventor
Udo Sieber
Walter Maeurer
Harald Lang
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
Priority to CN2008801194492A priority Critical patent/CN101889139B/zh
Publication of WO2009071401A1 publication Critical patent/WO2009071401A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/027—Injectors structurally combined with fuel-injection pumps characterised by the pump drive electric
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/007—Layout or arrangement of systems for feeding fuel characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools

Definitions

  • the third housing part 25 c is also formed substantially cup-shaped and defines a pumping chamber 27, in which fuel by means of the second armature 23 can be placed under pressure.
  • a first check valve 29, a second check valve 30 and a third check valve 31 are arranged in the third housing part 25.
  • the three check valves have the same structure and differ only in different spring strengths of your return springs.
  • the first check valve 29 connects the suction region 32 to the pumping chamber 27.
  • the second check valve 30 connects the pumping chamber to a chamber in the injector 20c.
  • the third check valve 31 connects the pumping chamber 27 with a return region 33, from which the fuel return line 6b goes off.
  • the function of the injection module 2 according to the invention is as follows.
  • An intake phase of the fuel pump 20a is introduced through the second return element 24, wherein the rest position of the second return element 24 defines the end of the intake phase.
  • the first check valve 29 is opened and the second and third check valves 30, 31 are each closed. This allows fuel through the open first check valve 29 in the
  • the third check valve 31 opens in order to reduce such pressure peaks.
  • the third check valve 31 takes over the function of the pressure regulator 20b.
  • the first armature 22 of the air regulator 2Od is also attracted in the direction of the arrow B.
  • the air actuator opens 2Od, so that air can flow through the bypass line 12.
  • the air actuator 2Od opens before the fuel pump enters the pressure phase.
  • Housing component 25 c and the pot 23 a of the armature 23 is arranged.
  • the third return spring 45 is disposed between the armature 23, more precisely the pot 23 a and the armature-facing end of the piston 42.
  • the two return springs 24, 45 are arranged parallel to one another in the space 41.
  • the selected construction of the armature 23 with a separate piston 44 makes it possible that, after an obstruction of the coil 21, first the armature 23 is moved downwards, and the piston 42 still remains in its position. Only when the disc member 23 c of the armature 23 presses against the inner bottom surface of the piston 42, the piston 42 moved together with the armature 23, so that the fluid located in the pump chamber 27 is pressurized.

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

La présente invention a pour objet un dispositif d'injection, comprenant une pompe à carburant (20a), un régulateur de pression (20b), un injecteur (20c) et un régulateur d'air (2Od), caractérisé en ce que la pompe à carburant (20a), le régulateur de pression (20b), l'injecteur (20c) et le régulateur d'air (2Od) font partie intégrante d'un module d'injection (2), et en ce que le dispositif d'injection comprend en outre précisément un actionneur qui actionne simultanément la pompe à carburant (20a) et le régulateur d'air (2Od), l'actionneur comprenant une bobine (21), une première armature (22) et une seconde armature (23). Un premier espace de travail (S1) est prévu au niveau de la première armature (22) et un second espace de travail (S2) est prévu au niveau de la seconde armature (23). Un joint fixe (36) est agencé entre la première armature (22) et la seconde armature (23), pour étanchéifier un fluide commandé par la première armature par rapport à un fluide commandé par la seconde armature.
PCT/EP2008/064846 2007-12-07 2008-11-03 Dispositif d'injection compact doté de deux armatures Ceased WO2009071401A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008801194492A CN101889139B (zh) 2007-12-07 2008-11-03 具有两个衔铁的紧凑型喷射装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007058955A DE102007058955A1 (de) 2007-12-07 2007-12-07 Kompakte Einspritzvorrichtung mit zwei Ankern
DE102007058955.9 2007-12-07

Publications (1)

Publication Number Publication Date
WO2009071401A1 true WO2009071401A1 (fr) 2009-06-11

Family

ID=40279060

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/064846 Ceased WO2009071401A1 (fr) 2007-12-07 2008-11-03 Dispositif d'injection compact doté de deux armatures

Country Status (3)

Country Link
CN (1) CN101889139B (fr)
DE (1) DE102007058955A1 (fr)
WO (1) WO2009071401A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937988A1 (de) * 1999-08-11 2001-02-15 Ficht Gmbh & Co Kg Vorrichtung zum Fördern und/oder Abspritzen von fliessfähigen Medien, insbesondere von Fluiden
US20070028900A1 (en) * 2005-08-05 2007-02-08 Jeffrey Allen internal combustion engine having a fuel injection system
EP1832739A1 (fr) * 2004-12-08 2007-09-12 Fai Electronic Co., Ltd. Module integre d'alimentation en carburant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4431268B2 (ja) 2000-11-17 2010-03-10 株式会社ミクニ 電子制御燃料噴射装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937988A1 (de) * 1999-08-11 2001-02-15 Ficht Gmbh & Co Kg Vorrichtung zum Fördern und/oder Abspritzen von fliessfähigen Medien, insbesondere von Fluiden
EP1832739A1 (fr) * 2004-12-08 2007-09-12 Fai Electronic Co., Ltd. Module integre d'alimentation en carburant
US20070028900A1 (en) * 2005-08-05 2007-02-08 Jeffrey Allen internal combustion engine having a fuel injection system

Also Published As

Publication number Publication date
DE102007058955A1 (de) 2009-06-10
CN101889139A (zh) 2010-11-17
CN101889139B (zh) 2012-06-20

Similar Documents

Publication Publication Date Title
EP0657644B1 (fr) Dispositif d'injection de combustible pour moteurs à combustion interne
WO2007115853A1 (fr) Injecteur de carburant
WO2005075811A1 (fr) Injecteur de carburant avec obturateur d'injection a commande directe
DE10222895A1 (de) Hochdruckspeicher für Kraftstoffeinspritzsysteme mit integriertem Druckregelventil
WO2009092658A1 (fr) Dispositif d'injection compact de conception simple
WO2009098112A1 (fr) Dispositif d'injection compact présentant une tendance réduite à la percolation
EP2603680B1 (fr) Dispositif d'injection pour introduire une solution d'urée dans la ligne d'échappement d'un moteur à combustion interne
WO2001011219A1 (fr) Injecteur a rampe commune
DE19949527A1 (de) Injektor für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen mit in den Ventilsteuerraum ragender Düsennadel
WO2009130068A1 (fr) Dispositif compact d'injection avec actionneur pneumatique à induit plat
EP1983186A2 (fr) Elément de commande à compensation de pression
EP1861617B1 (fr) Dispositif d'injection de carburant
EP1799999B1 (fr) Systeme de carburant pour un moteur a combustion interne
WO2009071401A1 (fr) Dispositif d'injection compact doté de deux armatures
DE10124238A1 (de) Hochdruck-Kraftstoffpumpe, insbesondere für direkteinspritzende Brennkraftmaschinen, sowie Kraftstoffsystem und Brennkraftmaschine
EP1961953A1 (fr) Soupape à plusieurs voies
EP2240682B1 (fr) Dispositif d'injection compact à buse commandée en pression
DE102009003081A1 (de) Kompakte Einspritzvorrichtung mit nach innen öffnendem Injektor
WO2010012315A1 (fr) Dispositif compact d'injection
WO2009065669A1 (fr) Dispositif d'injection compact doté de deux induits
WO2009130063A1 (fr) Injecteur
DE102008004634A1 (de) Kompakte Einspritzvorrichtung mit betriebssicherem Aufbau
DE102008010970A1 (de) Brennkraftmaschine mit kompakter Einspritzvorrichtung und Luftbypass
EP2133552B1 (fr) Injecteur de carburant
DE102009000343A1 (de) Kompakte Einspritzvorrichtung mit verbesserter Einspritzgenauigkeit

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880119449.2

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08857349

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 3350/CHENP/2010

Country of ref document: IN

122 Ep: pct application non-entry in european phase

Ref document number: 08857349

Country of ref document: EP

Kind code of ref document: A1