EP1048843A2 - Dispositif d'injection de combustible - Google Patents

Dispositif d'injection de combustible Download PDF

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Publication number
EP1048843A2
EP1048843A2 EP00105302A EP00105302A EP1048843A2 EP 1048843 A2 EP1048843 A2 EP 1048843A2 EP 00105302 A EP00105302 A EP 00105302A EP 00105302 A EP00105302 A EP 00105302A EP 1048843 A2 EP1048843 A2 EP 1048843A2
Authority
EP
European Patent Office
Prior art keywords
injection
pressure
fuel
line
fuel 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.)
Granted
Application number
EP00105302A
Other languages
German (de)
English (en)
Other versions
EP1048843A3 (fr
EP1048843B1 (fr
Inventor
Martin Biener
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1048843A2 publication Critical patent/EP1048843A2/fr
Publication of EP1048843A3 publication Critical patent/EP1048843A3/fr
Application granted granted Critical
Publication of EP1048843B1 publication Critical patent/EP1048843B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M63/06—Use of pressure wave generated by fuel inertia to open injection valves
    • 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
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors

Definitions

  • the invention relates to a fuel injection device according to the preamble of Main claim.
  • a disadvantage of these known common rail injection systems is the unsatisfactory one Controllability of the injectors and the peak injection pressures that can be achieved with them, which is far below that of other known fuel injection systems such as e.g. the pump-nozzle systems, which reach an injection pressure of up to 2,000 bar.
  • These disadvantages limit the specific power of an engine and especially the ackurate Control of injection and pre-injection.
  • constancy the injection quantities over the life of an internal combustion engine Problem represents.
  • Another disadvantage of the known injection valves with integrated solenoid valve control is their very complicated structure, through which these injectors very expensive to manufacture and also very prone to failure.
  • the object of the invention is therefore a structurally simple fuel injection device to be made available by increasing the injection pressure at the injectors brings a more efficient and thus more environmentally friendly fuel economy.
  • the solenoid valves are arranged separately from the injectors in the injection lines are and the injectors are designed as injection nozzles, for which in particular proven injection nozzles can be used, e.g. from fuel injection systems are known with conventional distributor injection pumps, can also pressure increasing mechanisms known from these known distributor injection pump systems use to compare the injection pressure in the injectors pressure in the common high-pressure line (common rail) must be significantly increased.
  • Another advantage is that tried and tested injectors against the less well dominant injectors with integrated solenoid valve can be replaced, these in terms of manageability, price and constant flow over their lifetime and are far superior in their availability.
  • the solenoid valves are immediate arranged on the common high-pressure line (common rail), so that no separate Supply lines to the solenoid valves are required and this together with the Common Rail can be attached to the engine.
  • nozzles Those with one or two spring holder technology can preferably be used as injection nozzles be a significant price advantage over the known injectors have.
  • a nozzle can be equipped with a needle motion sensor or a Needle stroke encoder be equipped.
  • FIG. 1 shows a schematic representation a fuel injection device with solenoid valves arranged on the common rail Control of the flow to the individual injectors.
  • the fuel injection device consists of a common high-pressure line 1 (Common-Rail), which uses a high-pressure pump 2 from a tank 9 with under high Pressure (approx. 1350 bar) standing fuel is filled.
  • a common high-pressure line 1 (Common-Rail), which uses a high-pressure pump 2 from a tank 9 with under high Pressure (approx. 1350 bar) standing fuel is filled.
  • Lead from high pressure line 1 a plurality of injection lines 4 corresponding to the number of cylinders to be supplied, the injection nozzle 5 projecting into a cylinder combustion chamber of the engine 6 flow out.
  • To control the supply of high-pressure fuel to the injection nozzles 5 are furthermore one solenoid valve 3 each in the injection lines 4, away from the injection nozzles 5, preferably used directly on the high pressure line 1.
  • the geometry of the injection lines 4 between the solenoid valve 3 and the injection nozzle 5 is predetermined in length, diameter and spatial layout in the engine compartment, that a large part of the injection pressure at the injector 5 due to reflections of fuel pressure waves between the solenoid valve 3 and the injection nozzle 5 when fuel suddenly flows into the injection line 4 via the solenoid valve 3 is generated.
  • a safety valve 7 is also arranged on the common high-pressure line 1, which has an opening cross section in a return line 8 for excess fuel on or heading.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP00105302A 1999-04-29 2000-03-15 Dispositif d'injection de combustible Expired - Lifetime EP1048843B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919665A DE19919665A1 (de) 1999-04-29 1999-04-29 Kraftstoffeinspritzvorrichtung
DE19919665 1999-04-29

Publications (3)

Publication Number Publication Date
EP1048843A2 true EP1048843A2 (fr) 2000-11-02
EP1048843A3 EP1048843A3 (fr) 2004-09-22
EP1048843B1 EP1048843B1 (fr) 2006-08-30

Family

ID=7906392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00105302A Expired - Lifetime EP1048843B1 (fr) 1999-04-29 2000-03-15 Dispositif d'injection de combustible

Country Status (3)

Country Link
EP (1) EP1048843B1 (fr)
AT (1) ATE338209T1 (fr)
DE (2) DE19919665A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150316015A1 (en) * 2014-04-30 2015-11-05 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057683B4 (de) * 2000-11-21 2005-10-06 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung
DE10148824A1 (de) * 2001-10-04 2003-04-10 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10343003A1 (de) * 2003-09-17 2005-04-14 Boehringer Werkzeugmaschinen Gmbh Werkzeugmaschine mit Bohr-Fräs-Kopf
DE102012017186A1 (de) * 2012-08-30 2014-03-06 Wieland-Werke Ag Maske für ein Beschichtungssystem, Beschichtungssystem und Verfahren zur Herstellung eines beschichteten Substrats

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548279A1 (de) 1995-09-28 1997-04-03 Bosch Gmbh Robert Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411539A1 (de) * 1984-03-29 1985-10-10 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzvorrichtung
DE4106015A1 (de) * 1991-02-26 1992-08-27 Ficht Gmbh Druckstoss-kraftstoffeinspritzung fuer verbrennungsmotoren
DE4304967A1 (de) * 1992-04-25 1993-10-28 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
DE4341543A1 (de) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
GB9411345D0 (en) * 1994-06-07 1994-07-27 Lucas Ind Plc Fuel supply system
AT408134B (de) * 1995-06-06 2001-09-25 Avl Verbrennungskraft Messtech Speichereinspritzsystem für dieselbrennkraftmaschinen
DE19540155C2 (de) * 1995-10-27 2000-07-13 Daimler Chrysler Ag Servoventil für eine Einspritzdüse
DE19638339B4 (de) * 1996-09-19 2008-10-02 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548279A1 (de) 1995-09-28 1997-04-03 Bosch Gmbh Robert Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150316015A1 (en) * 2014-04-30 2015-11-05 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine
US9494118B2 (en) * 2014-04-30 2016-11-15 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine

Also Published As

Publication number Publication date
ATE338209T1 (de) 2006-09-15
EP1048843A3 (fr) 2004-09-22
DE50013369D1 (de) 2006-10-12
EP1048843B1 (fr) 2006-08-30
DE19919665A1 (de) 2000-11-02

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