EP1048843B1 - Dispositif d'injection de combustible - Google Patents

Dispositif d'injection de combustible Download PDF

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Publication number
EP1048843B1
EP1048843B1 EP00105302A EP00105302A EP1048843B1 EP 1048843 B1 EP1048843 B1 EP 1048843B1 EP 00105302 A EP00105302 A EP 00105302A EP 00105302 A EP00105302 A EP 00105302A EP 1048843 B1 EP1048843 B1 EP 1048843B1
Authority
EP
European Patent Office
Prior art keywords
injection
fuel
pressure
fuel injection
common rail
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.)
Expired - Lifetime
Application number
EP00105302A
Other languages
German (de)
English (en)
Other versions
EP1048843A2 (fr
EP1048843A3 (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 the main claim, such. shown in the document DE 34 11 539.
  • the object of the invention is therefore to provide a structurally simple fuel injection device that brings a more efficient and thus more environmentally friendly fuel utilization by increasing the injection pressure at the injectors.
  • the solenoid valves are arranged separately from the injectors in the injection lines and the injectors are formed as injection nozzles, for which in particular proven injection nozzles can be used, which e.g. are known from fuel injection systems with conventional distributor injection pumps, also known from these known distributor injection pump systems known pressure increasing mechanisms can be used to significantly increase the injection pressure in the injectors with respect to the pressure in the common rail (common rail) located pressure.
  • Another advantage is that proven injectors can be replaced with the less well-controlled injectors with integrated solenoid valve, which are far superior in terms of controllability, price and fürflußkonstanz over their lifetime and in their availability.
  • the solenoid valves are arranged directly on the common high-pressure line (common rail), so that no separate supply lines to the solenoid valves are required and these can be fastened to the engine together with the common rail.
  • injection nozzles may preferably be used with one or two spring-holder technology, which have a significant price advantage over the known injectors.
  • such a nozzle can be equipped with a needle movement sensor or a Nadelhubgeber.
  • FIG. 1 shows a schematic representation of a fuel injection device with solenoid valves arranged on the common rail for controlling the flow to the individual injection nozzles.
  • the fuel injection device consists of a common high pressure line 1 (common rail), which is filled by means of a high-pressure pump 2 from a tank 9 with fuel under high pressure (about 1350 bar). From the high-pressure line 1, the number of cylinders to be supplied leads correspondingly to a plurality of injection lines 4, which each lead to an injection nozzle 5 projecting into a cylinder combustion chamber of the engine 6. For controlling the high-pressure fuel supply to the injection nozzles 5, a solenoid valve 3 is furthermore inserted into the injection lines 4, away from the injection nozzles 5, preferably 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 displacement in the engine compartment so that a large part of the injection pressure at the injection nozzle 5 by reflections of fuel pressure waves between the solenoid valve 3 and the injection nozzle 5 is generated during the sudden influx of fuel into the injection line 4 via the solenoid valve 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (4)

  1. Dispositif d'injection de carburant pour moteurs à combustion interne comprenant une conduite de carburant haute pression commune (1) (rampe commune) pouvant être remplie par une pompe de carburant haute pression (2), de laquelle part une pluralité de conduites d'injection (4) allant aux injecteurs individuels associés aux cylindres du moteur à combustion interne et comprenant des électrovannes (3) pour la commande de l'injection de carburant des injecteurs individuels, l'électrovanne (3) étant disposée à l'écart de l'injecteur dans la conduite d'injection (4), caractérisé en ce que l'injecteur est réalisé sous forme de buse d'injection (5) et la conduite d'injection (4) étant réalisée entre l'électrovanne (3) et la buse d'injection (5) de telle sorte que le niveau de pression de la buse d'injection (5) puisse être rehaussé par rapport au niveau de pression dans la conduite haute pression commune (1) (rampe commune) pendant le temps d'injection par le biais des variations de pression dans une colonne de carburant se trouvant dans la conduite d'injection (4).
  2. Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que les électrovannes (3) sont disposées directement au niveau de la conduite haute pression commune (1) (rampe commune).
  3. Dispositif d'injection de carburant selon la revendication 1, caractérisé en ce que les buses d'injection (5) sont insérées dans des fixations à un ressort ou à deux ressorts.
  4. Dispositif d'injection de carburant selon la revendication 3, caractérisé en ce que les buses d'injection (5) sont munies d'un palpeur de mouvement à aiguille ou d'un capteur de course à aiguille.
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
DE19919665 1999-04-29
DE19919665A DE19919665A1 (de) 1999-04-29 1999-04-29 Kraftstoffeinspritzvorrichtung

Publications (3)

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

Families Citing this family (5)

* 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
US9494118B2 (en) * 2014-04-30 2016-11-15 Hitachi Automotive Systems Americas Inc. Fuel delivery system for an internal combustion engine

Family Cites Families (9)

* 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
DE19548279B4 (de) * 1995-09-28 2006-12-14 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems
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

Also Published As

Publication number Publication date
EP1048843A2 (fr) 2000-11-02
DE50013369D1 (de) 2006-10-12
ATE338209T1 (de) 2006-09-15
EP1048843A3 (fr) 2004-09-22
DE19919665A1 (de) 2000-11-02

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