EP1952011A1 - Dispositif d'injection de carburant pour moteur a combustion interne a injection directe de carburant - Google Patents

Dispositif d'injection de carburant pour moteur a combustion interne a injection directe de carburant

Info

Publication number
EP1952011A1
EP1952011A1 EP06807052A EP06807052A EP1952011A1 EP 1952011 A1 EP1952011 A1 EP 1952011A1 EP 06807052 A EP06807052 A EP 06807052A EP 06807052 A EP06807052 A EP 06807052A EP 1952011 A1 EP1952011 A1 EP 1952011A1
Authority
EP
European Patent Office
Prior art keywords
valve element
pressure
fuel injection
injection device
acting
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.)
Granted
Application number
EP06807052A
Other languages
German (de)
English (en)
Other versions
EP1952011B1 (fr
Inventor
Andreas Rettich
Thomas Pauer
Friedrich Boecking
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 EP1952011A1 publication Critical patent/EP1952011A1/fr
Application granted granted Critical
Publication of EP1952011B1 publication Critical patent/EP1952011B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
    • 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
    • F02M2547/001—Control chambers formed by movable sleeves
    • 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 control chamber 48 is now connected via the outlet throttle 56 to the low pressure port 60. Since the inlet throttle 50 throttles more strongly than the outlet throttle 56, the pressure in the control chamber 48 and consequently also the action acting on the control surface 46 and acting in the closing direction decreases Force. As soon as it falls below the hydraulic force acting on the conical annular surface 20 and acting in the opening direction (less the force of the spring 44), the valve element 18 with the sealing edge 24 lifts away from the valve seat surface 26. Fuel now flows from the high-pressure chamber 28 to the fuel outlet channels 16.
  • Cross-sectional area of the pressure surfaces 20 and 22 are equal, is connected with the following: In the region of the sealing edge 24, the flow between the two annular surfaces 20 and 22 on the one hand and the opposite valve seat surface 26 on the other hand throttled very easily. This is at least at a portion of the conical end surface 22 to a pressure which is smaller than the pressure in the high-pressure chamber 28. This also depends on the outflow of the fuel through the fuel outlet channel 16.
  • a force progression can additionally or intensively also be brought about by the formation of a valve slide section (not shown in FIG. 1), which cooperates with a corresponding housing-side section.

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)

Abstract

L'invention concerne un dispositif (10) d'injection de carburant qui comprend un boîtier (12) dans lequel est disposé un élément de soupape (18). Ce dernier présente une surface (20, 22) de poussée hydraulique qui agit en direction de l'ouverture et qui délimite une chambre (28) à haute pression raccordée à un raccordement (54) de haute pression. Une surface (46) de commande hydraulique qui agit en direction de la fermeture et qui délimite une chambre pilote (48) dans laquelle une pression pilote variable règne en fonctionnement, est en plus disposée sur l'élément de soupape (18). Lorsque l'élément de soupape (18) est en position ouverte ou dans une plage de positions ouvertes, il coopère avec une partie (26) du boîtier pour assurer un étranglement, de telle sorte qu'au moins sur une partie de la surface de poussée (20, 22) soit appliquée une pression inférieure à la pression qui règne dans la chambre (28) à haute pression.
EP06807052.3A 2005-11-15 2006-10-06 Dispositif d'injection de carburant pour moteur a combustion interne a injection directe de carburant Ceased EP1952011B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005054385 2005-11-15
DE102006012078A DE102006012078A1 (de) 2005-11-15 2006-03-16 Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine mit Kraftstoff-Direkteinspritzung
PCT/EP2006/067156 WO2007057252A1 (fr) 2005-11-15 2006-10-06 Dispositif d'injection de carburant pour moteur a combustion interne a injection directe de carburant

Publications (2)

Publication Number Publication Date
EP1952011A1 true EP1952011A1 (fr) 2008-08-06
EP1952011B1 EP1952011B1 (fr) 2013-07-24

Family

ID=37606965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06807052.3A Ceased EP1952011B1 (fr) 2005-11-15 2006-10-06 Dispositif d'injection de carburant pour moteur a combustion interne a injection directe de carburant

Country Status (3)

Country Link
EP (1) EP1952011B1 (fr)
DE (1) DE102006012078A1 (fr)
WO (1) WO2007057252A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007043540A1 (de) * 2007-09-12 2009-05-07 Robert Bosch Gmbh Leckagefreier Kraftstoffinjektor mit langer Düsennadel
DE102008001425A1 (de) 2008-04-28 2009-10-29 Robert Bosch Gmbh Kraftstoff-Einspritzvorrichtung
DE102008001601A1 (de) 2008-05-06 2009-11-12 Robert Bosch Gmbh Kraftstoff-Injektor sowie Herstellungsverfahren
DE102008001907A1 (de) * 2008-05-21 2009-11-26 Robert Bosch Gmbh Kraftstoff-Injektor
DE102008042154A1 (de) 2008-09-17 2010-03-18 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102009028993A1 (de) 2009-08-28 2011-03-03 Robert Bosch Gmbh Kraftstoffinjektor
DE102015211672A1 (de) 2015-06-24 2016-12-29 Robert Bosch Gmbh Brennstoffeinspritzventil

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3704957B2 (ja) * 1998-07-06 2005-10-12 いすゞ自動車株式会社 インジェクタ
DE10024703A1 (de) 2000-05-18 2001-11-22 Bosch Gmbh Robert Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem einer Verbrennungsmaschine
DE10024702A1 (de) 2000-05-18 2001-11-22 Bosch Gmbh Robert Einspritzanordnung für ein Kraftstoff-Speichereinspritzsystem einer Verbrennungsmaschine
DE10100392C1 (de) * 2001-01-05 2002-06-13 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10229418A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Einrichtung zur Dämpfung des Nadelhubes an Kraftstoffinjektoren
DE10348925A1 (de) * 2003-10-18 2005-05-12 Bosch Gmbh Robert Kraftstoffinjektor mit mehrteiligem, direktgesteuertem Einspritzventilglied
DE10352736A1 (de) * 2003-11-12 2005-07-07 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadeleinspritzung
EP1555427B1 (fr) * 2004-01-13 2007-10-10 Delphi Technologies, Inc. Injecteur de carburant
DE102004002309A1 (de) * 2004-01-16 2005-08-04 Robert Bosch Gmbh Kraftstoffinjektor mit direkter Nadelstreuerung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007057252A1 *

Also Published As

Publication number Publication date
EP1952011B1 (fr) 2013-07-24
WO2007057252A1 (fr) 2007-05-24
DE102006012078A1 (de) 2007-05-16

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