EP1203882A3 - Injector - Google Patents

Injector Download PDF

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Publication number
EP1203882A3
EP1203882A3 EP01123491A EP01123491A EP1203882A3 EP 1203882 A3 EP1203882 A3 EP 1203882A3 EP 01123491 A EP01123491 A EP 01123491A EP 01123491 A EP01123491 A EP 01123491A EP 1203882 A3 EP1203882 A3 EP 1203882A3
Authority
EP
European Patent Office
Prior art keywords
control chamber
nozzle
nozzle needle
pressure
injection
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.)
Withdrawn
Application number
EP01123491A
Other languages
German (de)
French (fr)
Other versions
EP1203882A2 (en
Inventor
Bernd Mahr
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 EP1203882A2 publication Critical patent/EP1203882A2/en
Publication of EP1203882A3 publication Critical patent/EP1203882A3/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02M61/08—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 the valves opening in direction of fuel flow
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves

Abstract

Eine Einspritzdüse (21) einer druckgesteuerten Kraftstoffeinspritzeinrichtung (1) weist einen Steuerraum (28) zur Druckbeaufschlagung einer Düsennadel (22) auf. Der Steuerraum (28) ist über eine ein 2/2-Wege-Ventil (9) enthaltende Druckleitung (10) an einen Druckspeicherraum (6) anschließbar. Am der Einspritzöffnung (13) abgewandten, druckbeaufschlagbaren Ende der Düsennadel (22) ist eine Bohrung (36) ausgebildet ist, über die der Steuerraum (28) der Einspritzdüse (21) in Abhängigkeit vom Hub der Düsennadel (22) mit einer Leckageleitung (30) verbindbar ist.

Figure 00000001
An injection nozzle (21) of a pressure-controlled fuel injection device (1) has a control chamber (28) for pressurizing a nozzle needle (22). The control chamber (28) can be connected to a pressure storage chamber (6) via a pressure line (10) containing a 2/2-way valve (9). A bore (36) is formed on the end of the nozzle needle (22) that can be pressurized and faces away from the injection opening (13), via which the control chamber (28) of the injection nozzle (21) has a leakage line (30) depending on the stroke of the nozzle needle (22) ) is connectable.
Figure 00000001
EP01123491A 2000-11-03 2001-09-28 Injector Withdrawn EP1203882A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10054526A DE10054526A1 (en) 2000-11-03 2000-11-03 injection
DE10054526 2000-11-03

Publications (2)

Publication Number Publication Date
EP1203882A2 EP1203882A2 (en) 2002-05-08
EP1203882A3 true EP1203882A3 (en) 2003-12-17

Family

ID=7662037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01123491A Withdrawn EP1203882A3 (en) 2000-11-03 2001-09-28 Injector

Country Status (4)

Country Link
US (1) US6553967B2 (en)
EP (1) EP1203882A3 (en)
JP (1) JP2002147315A (en)
DE (1) DE10054526A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10123775B4 (en) * 2001-05-16 2005-01-20 Robert Bosch Gmbh Fuel injection device for internal combustion engines, in particular common rail injector, and fuel system and internal combustion engine
EP1541860B1 (en) * 2003-12-12 2007-07-04 Delphi Technologies, Inc. Fuel injector with control valve to control the pressure in the needle control chamber
US6928986B2 (en) * 2003-12-29 2005-08-16 Siemens Diesel Systems Technology Vdo Fuel injector with piezoelectric actuator and method of use
DE102004010760A1 (en) * 2004-03-05 2005-09-22 Robert Bosch Gmbh Fuel injection device for internal combustion engines with Nadelhubdämpfung
DE102006020634B4 (en) * 2006-05-04 2008-12-04 Man Diesel Se Injection injector for internal combustion engines
US11298769B2 (en) * 2019-05-13 2022-04-12 International Business Machines Corporation Prevention of dripping of material for material injection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711902A1 (en) * 1977-03-18 1978-09-21 Bosch Gmbh Robert FUEL INJECTOR
DE3117665A1 (en) * 1981-05-05 1982-11-18 Audi Nsu Auto Union Ag, 7107 Neckarsulm Fuel injection nozzle for injection internal combustion engines
DE19616812A1 (en) * 1995-04-27 1996-10-31 Nippon Soken Fuel injection device for i.c. engine
DE19623211A1 (en) * 1996-06-11 1997-12-18 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
US5769319A (en) * 1995-01-23 1998-06-23 Cummins Engine Company, Inc. Injection rate shaping nozzle assembly for a fuel injector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230613A (en) * 1990-07-16 1993-07-27 Diesel Technology Company Common rail fuel injection system
DE19727896A1 (en) * 1997-07-01 1999-01-07 Bosch Gmbh Robert Fuel injector
AT2961U3 (en) * 1998-07-02 1999-11-25 Avl List Gmbh STORAGE INJECTION DEVICE
EP1338788B1 (en) * 1999-04-01 2005-05-18 Delphi Technologies, Inc. Fuel injector
DE19938169A1 (en) * 1999-08-16 2001-03-01 Bosch Gmbh Robert Fuel injector
DE10065103C1 (en) * 2000-12-28 2002-06-20 Bosch Gmbh Robert Pressure-controlled fuel injection device has pressure cavity connected by line containing valve directly to pressure storage cavity

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711902A1 (en) * 1977-03-18 1978-09-21 Bosch Gmbh Robert FUEL INJECTOR
DE3117665A1 (en) * 1981-05-05 1982-11-18 Audi Nsu Auto Union Ag, 7107 Neckarsulm Fuel injection nozzle for injection internal combustion engines
US5769319A (en) * 1995-01-23 1998-06-23 Cummins Engine Company, Inc. Injection rate shaping nozzle assembly for a fuel injector
DE19616812A1 (en) * 1995-04-27 1996-10-31 Nippon Soken Fuel injection device for i.c. engine
DE19623211A1 (en) * 1996-06-11 1997-12-18 Bosch Gmbh Robert Fuel injection valve for internal combustion engines

Also Published As

Publication number Publication date
JP2002147315A (en) 2002-05-22
DE10054526A1 (en) 2002-05-16
EP1203882A2 (en) 2002-05-08
US6553967B2 (en) 2003-04-29
US20020053606A1 (en) 2002-05-09

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