WO2002046603A3 - Stroke-controlled valve for use as a fuel dosing device in an injection system of an internal combustion engine - Google Patents

Stroke-controlled valve for use as a fuel dosing device in an injection system of an internal combustion engine Download PDF

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Publication number
WO2002046603A3
WO2002046603A3 PCT/DE2001/004576 DE0104576W WO0246603A3 WO 2002046603 A3 WO2002046603 A3 WO 2002046603A3 DE 0104576 W DE0104576 W DE 0104576W WO 0246603 A3 WO0246603 A3 WO 0246603A3
Authority
WO
WIPO (PCT)
Prior art keywords
valve
stroke
combustion engine
internal combustion
injection system
Prior art date
Application number
PCT/DE2001/004576
Other languages
German (de)
French (fr)
Other versions
WO2002046603A2 (en
Inventor
Andreas Dutt
Original Assignee
Bosch Gmbh Robert
Andreas Dutt
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, Andreas Dutt filed Critical Bosch Gmbh Robert
Publication of WO2002046603A2 publication Critical patent/WO2002046603A2/en
Publication of WO2002046603A3 publication Critical patent/WO2002046603A3/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
    • 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

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

The invention relates to a stroke-controlled valve for use as a fuel dosing device in an injection system of an internal combustion engine. Said valve comprises a stepped valve needle (11) that is actuated within valve body (10, 10a) against a spring force (30), a first pressure chamber (13) linked with a high-pressure supply (14), a second pressure chamber (15) that has s connection (16, 16a) leading to an injection nozzle associated therewith, and a depressurized fuel return (17). The stroke-controlled valve according to the invention is especially characterized in that two axially spaced-apart valve-sealing edges (18, 27) are configured on the valve needle (11) and interact with a respective valve seat (20 or 29) thereby forming a first valve (18, 20) and a second valve (27, 29) in such a way that the valve (27, 29) interlinks the two pressure chambers (13, 15) and that the first valve (18, 20) links the second pressure chamber (15) with the depressurized fuel return (17). The axial distance between the two valve seats (20, 29) is larger than the axial distance of the two valve-sealing edges (18, 27) to such an extent that (only) during duration of the stroke of the valve needle (11) the first (18, 20) and the second valve (27, 29) are open at the same time.
PCT/DE2001/004576 2000-12-09 2001-12-07 Stroke-controlled valve for use as a fuel dosing device in an injection system of an internal combustion engine WO2002046603A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10061246.6 2000-12-09
DE2000161246 DE10061246A1 (en) 2000-12-09 2000-12-09 Stroke-controlled valve as a fuel metering device of an injection system for internal combustion engines

Publications (2)

Publication Number Publication Date
WO2002046603A2 WO2002046603A2 (en) 2002-06-13
WO2002046603A3 true WO2002046603A3 (en) 2002-09-06

Family

ID=7666401

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/004576 WO2002046603A2 (en) 2000-12-09 2001-12-07 Stroke-controlled valve for use as a fuel dosing device in an injection system of an internal combustion engine

Country Status (2)

Country Link
DE (1) DE10061246A1 (en)
WO (1) WO2002046603A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686764A2 (en) * 1994-06-07 1995-12-13 Lucas Industries Public Limited Company Fuel supply system
DE19512270A1 (en) * 1995-04-01 1996-09-26 Mtu Friedrichshafen Gmbh Fuel injection device for diesel engine
US6067955A (en) * 1997-09-24 2000-05-30 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19939447A1 (en) * 1999-08-20 2000-11-23 Bosch Gmbh Robert Fuel injection arrangement for combustion engine, having blocking element which alternately controls two valve seats arranged between at least three pressure conductor channels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686764A2 (en) * 1994-06-07 1995-12-13 Lucas Industries Public Limited Company Fuel supply system
DE19512270A1 (en) * 1995-04-01 1996-09-26 Mtu Friedrichshafen Gmbh Fuel injection device for diesel engine
US6067955A (en) * 1997-09-24 2000-05-30 Robert Bosch Gmbh Fuel injection device for internal combustion engines
DE19939447A1 (en) * 1999-08-20 2000-11-23 Bosch Gmbh Robert Fuel injection arrangement for combustion engine, having blocking element which alternately controls two valve seats arranged between at least three pressure conductor channels

Also Published As

Publication number Publication date
WO2002046603A2 (en) 2002-06-13
DE10061246A1 (en) 2002-06-20

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