WO2009132879A3 - Fuel injection system comprising a closing throttle in the fuel supply - Google Patents

Fuel injection system comprising a closing throttle in the fuel supply Download PDF

Info

Publication number
WO2009132879A3
WO2009132879A3 PCT/EP2009/052638 EP2009052638W WO2009132879A3 WO 2009132879 A3 WO2009132879 A3 WO 2009132879A3 EP 2009052638 W EP2009052638 W EP 2009052638W WO 2009132879 A3 WO2009132879 A3 WO 2009132879A3
Authority
WO
WIPO (PCT)
Prior art keywords
fuel injection
chamber
housing
injection device
annular
Prior art date
Application number
PCT/EP2009/052638
Other languages
German (de)
French (fr)
Other versions
WO2009132879A2 (en
Inventor
Hans-Christoph Magel
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 WO2009132879A2 publication Critical patent/WO2009132879A2/en
Publication of WO2009132879A3 publication Critical patent/WO2009132879A3/en

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
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus

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

The invention relates to a fuel injection device for an internal combustion engine having a direct fuel injection system, said fuel injection device comprising a housing (2) which has an end (3) that faces a combustion chamber of the internal combustion engine and that is close to the combustion chamber and in which a valve element (8) is guided so as to reciprocate. The end of the housing which is remote from the combustion chamber is guided in a guide piece (22) which radially inwardly delimits a control chamber (20) and which radially outwardly delimits an annular guide chamber (24) that extends between the guide piece (22) and the housing (2) and that communicates with a high pressure source (26). The fuel injection device further comprises an internal storage volume in an annular valve chamber (28) which extends between the valve element (8) and the housing (2). In order to devise a fuel injection device which has a long service life and is easy and inexpensive to produce, a closing throttle is disposed in the annular valve chamber (28) between the annular guide chamber (24) and the internal storage volume.
PCT/EP2009/052638 2008-04-28 2009-03-05 Fuel injection device WO2009132879A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810001425 DE102008001425A1 (en) 2008-04-28 2008-04-28 Fuel injector
DE102008001425.7 2008-04-28

Publications (2)

Publication Number Publication Date
WO2009132879A2 WO2009132879A2 (en) 2009-11-05
WO2009132879A3 true WO2009132879A3 (en) 2010-01-14

Family

ID=40910822

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/052638 WO2009132879A2 (en) 2008-04-28 2009-03-05 Fuel injection device

Country Status (2)

Country Link
DE (1) DE102008001425A1 (en)
WO (1) WO2009132879A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000281A1 (en) 2009-01-19 2010-07-22 Robert Bosch Gmbh Fuel injector, particularly common rail injector for injecting fuel in combustion chamber of internal combustion engine, comprises injection valve element which is adjusted between closed position and open position
DE102009001704B4 (en) 2009-03-20 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102009028993A1 (en) * 2009-08-28 2011-03-03 Robert Bosch Gmbh fuel injector
DE102009045434A1 (en) * 2009-10-07 2011-04-14 Robert Bosch Gmbh Fuel injection valve
DE102009046452A1 (en) * 2009-11-06 2011-05-12 Robert Bosch Gmbh Injector for a leak-free fuel injector
DE102010001960A1 (en) * 2010-02-16 2011-08-18 Robert Bosch GmbH, 70469 Method for detecting the closing time of an injection valve member in a fuel injection valve and fuel injection valve
DE102014209961A1 (en) 2014-05-26 2015-11-26 Robert Bosch Gmbh Nozzle assembly for a fuel injector and fuel injector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007147667A1 (en) * 2006-06-23 2007-12-27 Robert Bosch Gmbh Fuel injection device for an internal combustion engine
WO2008015039A1 (en) * 2006-08-04 2008-02-07 Robert Bosch Gmbh Injector for a fuel injection system
WO2008046679A1 (en) * 2006-10-18 2008-04-24 Robert Bosch Gmbh Injector for injecting fuel
EP1990532A1 (en) * 2007-05-07 2008-11-12 Robert Bosch GmbH Fuel injector for a combustion engine with common rail injection system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755057A1 (en) 1997-12-11 1999-06-17 Bosch Gmbh Robert Fuel injection nozzle for self-igniting internal combustion engines
DE102006012078A1 (en) 2005-11-15 2007-05-16 Bosch Gmbh Robert Fuel injection device for an internal combustion engine with direct fuel injection

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007147667A1 (en) * 2006-06-23 2007-12-27 Robert Bosch Gmbh Fuel injection device for an internal combustion engine
WO2008015039A1 (en) * 2006-08-04 2008-02-07 Robert Bosch Gmbh Injector for a fuel injection system
WO2008046679A1 (en) * 2006-10-18 2008-04-24 Robert Bosch Gmbh Injector for injecting fuel
EP1990532A1 (en) * 2007-05-07 2008-11-12 Robert Bosch GmbH Fuel injector for a combustion engine with common rail injection system

Also Published As

Publication number Publication date
WO2009132879A2 (en) 2009-11-05
DE102008001425A1 (en) 2009-10-29

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