BR0205760A - Fuel Injector with Closing Pressure Compensation - Google Patents

Fuel Injector with Closing Pressure Compensation

Info

Publication number
BR0205760A
BR0205760A BR0205760-3A BR0205760A BR0205760A BR 0205760 A BR0205760 A BR 0205760A BR 0205760 A BR0205760 A BR 0205760A BR 0205760 A BR0205760 A BR 0205760A
Authority
BR
Brazil
Prior art keywords
fuel injector
nozzle
nozzle needle
guide
fuel
Prior art date
Application number
BR0205760-3A
Other languages
Portuguese (pt)
Inventor
Christoph Buehler
Original Assignee
Bosch Gmbh Robert
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 Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of BR0205760A publication Critical patent/BR0205760A/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
    • 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
    • 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
    • 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

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

"INJETOR DE COMBUSTìVEL COM COMPENSAçãO DE PRESSãO DE FECHO". A invenção refere-se a um injetor de combustível para injeção de combustível na câmara de combustão de um motor de combustão interna compreendendo um corpo de injetor (2). Neste está alojada uma agulha de tubeira (3) pretensionada por meio de uma mola de fecho (35), que está envolta por uma câmara de tubeira (6), que é ativada por meio de um afluxo de alta pressão (7) com combustível que se encontra sob alta pressão. Na agulha de tubeira é formada, na região da ponta agulha de tubeira (13), uma área de sede (15), com a qual aberturas de injeção (18) de um corpo de tubeira (11) são liberáveis e fecháveis. Na agulha de tubeira (3) entre um elemento de guia e vedação (4) e a câmara de tubeira (6) é formada uma área (23) hidráulica, que se contrapõe ao elemento de guia e vedação (4) e cujo contato passa de uma primeira posição de contato (27), no decorrer do funcionamento do injetor de combustível (1), para um contato de superfície (29) de uma região de contato (22, 24) do elemento de guia e vedação (4)."FUEL INJECTOR WITH CLOSE PRESSURE COMPENSATION". The invention relates to a fuel injector for fuel injection in the combustion chamber of an internal combustion engine comprising an injector body (2). Housed therein is a nozzle needle (3) pretensioned by a locking spring (35), which is surrounded by a nozzle chamber (6), which is activated by a high pressure inflow (7) with fuel which is under high pressure. In the nozzle needle is formed, in the region of the nozzle needle tip (13), a seat area (15), with which injection openings (18) of a nozzle body (11) are releasable and lockable. In the nozzle needle (3) between a guide and seal member (4) and the nozzle chamber (6) a hydraulic area (23) is formed, which opposes the guide and seal member (4) and whose contact passes through. from a first contact position (27) during operation of the fuel injector (1) to a surface contact (29) of a contact region (22, 24) of the guide and seal element (4).

BR0205760-3A 2001-07-18 2002-05-18 Fuel Injector with Closing Pressure Compensation BR0205760A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001134868 DE10134868A1 (en) 2001-07-18 2001-07-18 Fuel injector with closing pressure compensation
PCT/DE2002/001805 WO2003008797A1 (en) 2001-07-18 2002-05-18 Fuel injector with locking pressure compensation

Publications (1)

Publication Number Publication Date
BR0205760A true BR0205760A (en) 2003-07-22

Family

ID=7692169

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0205760-3A BR0205760A (en) 2001-07-18 2002-05-18 Fuel Injector with Closing Pressure Compensation

Country Status (5)

Country Link
EP (1) EP1412633B1 (en)
JP (1) JP4138650B2 (en)
BR (1) BR0205760A (en)
DE (2) DE10134868A1 (en)
WO (1) WO2003008797A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4645636B2 (en) * 2007-11-13 2011-03-09 株式会社デンソー Fuel injection valve
GB0813777D0 (en) 2008-07-28 2008-09-03 Micromass Ltd Mass spectrometer
DE102009045168A1 (en) 2009-09-30 2011-03-31 Robert Bosch Gmbh Fuel injection valve, particularly injector for fuel injection systems of air-consolidating internal-combustion engines, has valve needle sectional arranged in valve housing part
DK2405127T3 (en) * 2010-07-07 2013-04-22 Waertsilae Switzerland Ltd Fuel injection device for internal combustion engines
DE102015219376A1 (en) * 2015-10-07 2017-04-13 Robert Bosch Gmbh Nozzle assembly for a fuel injector and fuel injector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808206A (en) * 1954-05-11 1959-01-28 Nylands Verksted Improvements in fuel injection systems for internal combustion engines
JPS60116857A (en) * 1983-11-29 1985-06-24 Nissan Motor Co Ltd Fuel injection nozzle
JPS61108867A (en) * 1984-10-31 1986-05-27 Nippon Soken Inc Fuel injection nozzle
JPS63143361A (en) * 1986-12-04 1988-06-15 Aisan Ind Co Ltd Controlling method for injector valve
GB8809268D0 (en) * 1988-04-20 1988-05-25 Lucas Ind Plc Fuel injection nozzle
DK171216B1 (en) * 1994-08-09 1996-07-29 Man B & W Diesel Gmbh Fuel injector for an internal combustion engine
DE29519296U1 (en) * 1995-12-06 1997-04-03 Robert Bosch Gmbh, 70469 Stuttgart Fuel injection valve for internal combustion engines
DE19619523A1 (en) 1996-05-15 1997-11-20 Bosch Gmbh Robert Fuel injector for high pressure injection
DE29814934U1 (en) 1998-08-20 2000-01-05 Robert Bosch Gmbh, 70469 Stuttgart Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
JP4138650B2 (en) 2008-08-27
DE50212605D1 (en) 2008-09-18
WO2003008797A1 (en) 2003-01-30
EP1412633B1 (en) 2008-08-06
JP2005509107A (en) 2005-04-07
EP1412633A1 (en) 2004-04-28
DE10134868A1 (en) 2003-02-13

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Legal Events

Date Code Title Description
B09A Decision: intention to grant
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time