FR2854661A1 - METHOD FOR MULTIPLE CONTROLS OF A FUEL INJECTOR WITH A VARIABLE NOZZLE - Google Patents

METHOD FOR MULTIPLE CONTROLS OF A FUEL INJECTOR WITH A VARIABLE NOZZLE

Info

Publication number
FR2854661A1
FR2854661A1 FR0404880A FR0404880A FR2854661A1 FR 2854661 A1 FR2854661 A1 FR 2854661A1 FR 0404880 A FR0404880 A FR 0404880A FR 0404880 A FR0404880 A FR 0404880A FR 2854661 A1 FR2854661 A1 FR 2854661A1
Authority
FR
France
Prior art keywords
needle
fuel injector
controlled
multiple controls
opening
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.)
Pending
Application number
FR0404880A
Other languages
French (fr)
Inventor
Hans Christoph Magel
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 FR2854661A1 publication Critical patent/FR2854661A1/en
Pending 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
    • 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
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/086—Having more than one injection-valve controlling discharge orifices
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • 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
    • F02M2200/46—Valves, e.g. injectors, with concentric valve bodies

Abstract

Procédé de commandes multiples d'un injecteur de carburant (4) ayant un organe de soupape d'injection (6) comprenant une première (7) et une seconde partie d'aiguille (8) permettant de libérer ou de fermer chaque fois un certain nombre d'orifices d'injection (15, 16) à l'extrémité de l'injecteur (4) du côté de la chambre de combustion, dont la commande se fait par l'intermédiaire d'un distributeur à tiroir (32) commandé par un actionneur (60).Le distributeur à tiroir (32) à deux étages, commun aux deux parties d'aiguille (7, 8), est commandé interrompre une première durée de commande (71) ouvrant la première partie d'aiguille (7) pour fermer partiellement la première partie d'aiguille (7) et établir une force agissant dans la direction d'ouverture sur la seconde partie d'aiguille (8), pendant une période (80) suivie dans le cas d'une injection multiple par une seconde durée de commande (72) du distributeur (32) ouvrant les deux parties d'aiguille (7, 8).Method for multiple controls of a fuel injector (4) having an injection valve member (6) comprising a first (7) and a second needle portion (8) for releasing or closing each time a certain number of injection orifices (15, 16) at the end of the injector (4) on the side of the combustion chamber, which is controlled by means of a controlled spool valve (32) by an actuator (60). The two-stage spool valve (32), common to the two needle parts (7, 8), is controlled to interrupt a first control duration (71) opening the first needle part ( 7) to partially close the first needle part (7) and establish a force acting in the opening direction on the second needle part (8), for a period (80) followed in the case of an injection multiple by a second control duration (72) of the distributor (32) opening the two needle parts (7, 8).

FR0404880A 2003-05-09 2004-05-06 METHOD FOR MULTIPLE CONTROLS OF A FUEL INJECTOR WITH A VARIABLE NOZZLE Pending FR2854661A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003120980 DE10320980A1 (en) 2003-05-09 2003-05-09 Method for multiple control of a fuel injector with a vario nozzle

Publications (1)

Publication Number Publication Date
FR2854661A1 true FR2854661A1 (en) 2004-11-12

Family

ID=32478260

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0404880A Pending FR2854661A1 (en) 2003-05-09 2004-05-06 METHOD FOR MULTIPLE CONTROLS OF A FUEL INJECTOR WITH A VARIABLE NOZZLE

Country Status (4)

Country Link
JP (1) JP2005291195A (en)
DE (1) DE10320980A1 (en)
FR (1) FR2854661A1 (en)
GB (1) GB2401650B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057244A1 (en) * 2004-11-26 2006-06-01 Robert Bosch Gmbh fuel Injector
JP4535037B2 (en) * 2006-02-08 2010-09-01 株式会社デンソー Injector and fuel injection device
JP4710892B2 (en) * 2007-09-20 2011-06-29 トヨタ自動車株式会社 Fuel injection control device for internal combustion engine
DE102013220794A1 (en) 2013-10-15 2015-06-03 Continental Automotive Gmbh Injection valve and device for operating an injection valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546739A (en) * 1983-08-10 1985-10-15 Diesel Kiki Co., Ltd. Fuel injection valve with variable discharge area of nozzle holes
JPH04140468A (en) * 1990-09-29 1992-05-14 Mazda Motor Corp Fuel injection nozzle
DE10038054A1 (en) * 1999-08-05 2001-02-15 Avl List Gmbh Cam-controlled injection unit for internal combustion engine; has two injector needles, where one has control piston for pressure chamber, in which pressure is controlled by valve in balance line
US20030015599A1 (en) * 2001-07-19 2003-01-23 Carroll John T. Fuel injector with injection rate control

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711392A1 (en) * 1977-03-16 1978-09-21 Bosch Gmbh Robert IC engine fuel injector nozzle - has two part hollow needle valve, with parts operating successively
US5899389A (en) * 1997-06-02 1999-05-04 Cummins Engine Company, Inc. Two stage fuel injector nozzle assembly
DE10222208A1 (en) * 2002-05-18 2003-11-27 Bosch Gmbh Robert Fuel injection valve for combustion engine, has outer valve needle that is so moved in bore of housing that valve can be kept in intermediate position without resting at stop shoulder of inner valve needle
DE10229417A1 (en) * 2002-06-29 2004-01-15 Robert Bosch Gmbh Accumulator injection system with vario nozzle and pressure booster

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546739A (en) * 1983-08-10 1985-10-15 Diesel Kiki Co., Ltd. Fuel injection valve with variable discharge area of nozzle holes
JPH04140468A (en) * 1990-09-29 1992-05-14 Mazda Motor Corp Fuel injection nozzle
DE10038054A1 (en) * 1999-08-05 2001-02-15 Avl List Gmbh Cam-controlled injection unit for internal combustion engine; has two injector needles, where one has control piston for pressure chamber, in which pressure is controlled by valve in balance line
US20030015599A1 (en) * 2001-07-19 2003-01-23 Carroll John T. Fuel injector with injection rate control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 416 (M - 1304) 2 September 1992 (1992-09-02) *

Also Published As

Publication number Publication date
GB2401650B (en) 2005-04-06
DE10320980A1 (en) 2004-11-25
GB2401650A (en) 2004-11-17
JP2005291195A (en) 2005-10-20
GB0410169D0 (en) 2004-06-09

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