EP1482165A1 - Injecteur avec plusieurs orifices pour moteur à combustion interne et prcédé d'utilisation d'un injecteur avec plusieurs orifices - Google Patents

Injecteur avec plusieurs orifices pour moteur à combustion interne et prcédé d'utilisation d'un injecteur avec plusieurs orifices Download PDF

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Publication number
EP1482165A1
EP1482165A1 EP04101457A EP04101457A EP1482165A1 EP 1482165 A1 EP1482165 A1 EP 1482165A1 EP 04101457 A EP04101457 A EP 04101457A EP 04101457 A EP04101457 A EP 04101457A EP 1482165 A1 EP1482165 A1 EP 1482165A1
Authority
EP
European Patent Office
Prior art keywords
needle body
nozzle
needle
spray
inner needle
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.)
Ceased
Application number
EP04101457A
Other languages
German (de)
English (en)
Inventor
Eberhard Kull
Ferdinand Löbbering
Jürgen Schindlatz
Clemens Senghaas
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1482165A1 publication Critical patent/EP1482165A1/fr
Ceased 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
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
    • 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
    • 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
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • 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
    • 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
    • F02M61/161—Means for adjusting injection-valve lift

Definitions

  • the invention relates in particular to a multi-hole injection nozzle for air-compressing, direct injection internal combustion engines according to the preamble of claim 1 and a method for operating a multi-hole injector according to the preamble of claim 6.
  • the amount of to be fed Fuel depends largely on the operating condition of the motor vehicle engine. For example, the Motor vehicle engine operated in partial or full load. According to the operating mode selected in each case adjust the amount of fuel over the direct injection Nozzles are fed to the combustion chamber.
  • a fuel injector is known.
  • This injector has a nozzle body with a cavity.
  • Nozzle bodies are sprayed with holes from the outside reach to the cavity.
  • a nozzle needle slidably intended. Moving the needle causes the Spray holes are opened or closed.
  • the nozzle needle is made in two parts. It has a displaceable outer needle body which is provided with a hole. There is an inside in the hole rer needle body so that it slide in the hole can.
  • the end points of the displacement path of the outer and the inner needle body are different from each other by two Anchor points limited so that both needle bodies are independent move from each other and each different Release rows of spray holes through which fuel is then released can get into the interior of the combustion chamber.
  • the inner needle body With the help of a spring, the inner needle body is against the outer needle body biased. So that the outer needle body be moved away from the spray holes and the openings a first row of spray holes is released during the inner needle body a second row of spray holes still closed holds. This opening is only one row of spray holes suitable for partial load operation. Only when the outer needle body is shifted by a defined minimum amount, the inner needle body also rises, so that the second row of spray holes released for full load operation becomes.
  • the minimum stroke from the outer needle body is due to the location of another Anchor point determined at which the spring against an anchor point presses, which is arranged on the inner needle body is.
  • the object of the present invention is therefore a multi-hole injection nozzle propose with it in a simple way is possible for different operating states different To release spray hole cross sections.
  • this object is achieved by a multi-hole injection nozzle with the features of claim 1 and by Method according to claim 6 solved.
  • a multi-hole injection nozzle thus has a nozzle needle that can slide in a nozzle body.
  • the nozzle needle comprises an outer needle body with a Bolt and an inner needle body with a needle recess.
  • the bolt is arranged so that it is in the needle recess is movable.
  • the Needle recess designed to face the inner needle body runs axially.
  • the inner needle body can be countered in particular with a spring an anchor point in the cavity of the nozzle body is provided to be biased.
  • two rows of spray holes are preferably provided, the first of the outer needle body and the second is covered by the inner needle body.
  • the spray holes of the different Spray hole rows also have different diameters his.
  • the spray hole row the first will have a smaller diameter than that Row of spray holes that is opened second.
  • the nozzle needle 14 has an outer needle body 24 which in a cavity of the Nozzle body 12 can slide.
  • the outer needle body 24 is provided with a cavity 25 in its lower region.
  • In an inner needle body 26 is introduced into the cavity 25 in such a way that it can slide in the cavity 25.
  • the inner one The needle body 26 is resilient against the outer needle body 24, preferably mounted with a prestressed compression spring 15.
  • Spray holes 20 arranged, one of which in cross section is shown.
  • Spray holes are on a second bolt circle plane 18 22 arranged, one of which in cross section is shown.
  • the outer needle body 24 is arranged so that he spray holes 22 of the second bolt circle level 18 can close when he is in his lowest position located. By moving the outer needle body 24 in the direction of arrow A from its lowest stop position out the openings of the spray holes 22 are released.
  • the inner needle body 24 that is in the outer needle body can slide and is guided in it is arranged that he had the spray holes in his lowest position 20 covers the first row of spray holes 16 and thus closes.
  • a needle recess 28 introduced in the inner needle body 26 in the inner needle body 26 there is also a needle recess 28 introduced. This is preferably an elongated hole with a Expansion formed axially to the inner needle body 26.
  • a bolt 30 is arranged in the needle recess 28 so that he can slide in it in the axial direction.
  • the bolt 30 is connected to the outer needle body 24 so that it is together is moved with it.
  • FIG. 2 (a) is the state of the multi-hole injector 10 shown, both spray holes 20, 22 of the different Rows of spray holes are closed.
  • the spray hole 20 is kept closed by the outer needle body 24, which is in its lowest position.
  • the Spray hole 20 is closed by the inner needle body 26 held, which is also in its lowest position and by the spring 15 against the outer needle body 24 is biased and thus pressed in the direction of the spray hole 20 becomes.
  • the bolt 30 is located approximately in the middle the longitudinal extent of the needle recess 28 and can in the direction of the arrow A can still be moved by an amount d without it abuts the edge 32 of the needle recess 28.
  • Fig. 2 The conditions for the partial load operation of the nozzle 10 in the only a defined proportion of the spray holes provided 20, 22 to be opened is shown in Fig. 2 (b).
  • the spring 15 By moving the outer needle body 24 in the direction of the arrow A over the pressure stage 34 (Fig. 1) also Spray hole 22 released, the spring 15 simultaneously the inner needle body 26 in the direction of the spray hole 20 presses so that it stays closed.
  • the bolt 30 is also displaced in the needle recess 28, until it hits the upper edge of the needle recess.
  • Fig. 2 (c) it is shown that the bolt 30 at the top 32 of the needle recess is fixed and there a firm connection between the outer needle body 24 and the inner Manufactures needle body 26.
  • Another shift of the outer Needle body 24 in the direction of arrow A now has the consequence that the inner needle body 26 is raised and thus also the opening of the spray hole 20 is released. In this position can therefore fuel through both spray holes 20 and 22 get into the combustion chamber, so that the increased Fuel requirements are covered at full load can.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP04101457A 2003-05-26 2004-04-08 Injecteur avec plusieurs orifices pour moteur à combustion interne et prcédé d'utilisation d'un injecteur avec plusieurs orifices Ceased EP1482165A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10323870 2003-05-26
DE10323870 2003-05-26

Publications (1)

Publication Number Publication Date
EP1482165A1 true EP1482165A1 (fr) 2004-12-01

Family

ID=33103593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04101457A Ceased EP1482165A1 (fr) 2003-05-26 2004-04-08 Injecteur avec plusieurs orifices pour moteur à combustion interne et prcédé d'utilisation d'un injecteur avec plusieurs orifices

Country Status (1)

Country Link
EP (1) EP1482165A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1835167A1 (fr) * 2006-03-14 2007-09-19 Nikki Co., Ltd. Soupape d'injection de carburant
WO2017133892A1 (fr) * 2016-02-01 2017-08-10 Delphi International Operations Luxembourg S.À R.L. Ensemble aiguille et buse d'injecteur de carburant

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1353436A (en) * 1971-09-24 1974-05-15 Bosch Gmbh Robert Fuel injection valves
US4151958A (en) * 1977-03-09 1979-05-01 Robert Bosch Gmbh Fuel injection nozzle
US4382554A (en) * 1980-09-27 1983-05-10 Robert Bosch Gmbh Fuel injection nozzle construction
EP0967382A2 (fr) * 1998-06-24 1999-12-29 LUCAS INDUSTRIES public limited company Injecteur de carburant
US6189817B1 (en) * 1999-03-04 2001-02-20 Delphi Technologies, Inc. Fuel injector
DE10118699A1 (de) * 2001-04-17 2002-10-31 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung und Kraftstoffsystem für Brennkraftmaschinen, sowie Brennkraftmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1353436A (en) * 1971-09-24 1974-05-15 Bosch Gmbh Robert Fuel injection valves
US4151958A (en) * 1977-03-09 1979-05-01 Robert Bosch Gmbh Fuel injection nozzle
US4382554A (en) * 1980-09-27 1983-05-10 Robert Bosch Gmbh Fuel injection nozzle construction
EP0967382A2 (fr) * 1998-06-24 1999-12-29 LUCAS INDUSTRIES public limited company Injecteur de carburant
US6189817B1 (en) * 1999-03-04 2001-02-20 Delphi Technologies, Inc. Fuel injector
DE10118699A1 (de) * 2001-04-17 2002-10-31 Bosch Gmbh Robert Kraftstoff-Einspritzvorrichtung und Kraftstoffsystem für Brennkraftmaschinen, sowie Brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1835167A1 (fr) * 2006-03-14 2007-09-19 Nikki Co., Ltd. Soupape d'injection de carburant
WO2017133892A1 (fr) * 2016-02-01 2017-08-10 Delphi International Operations Luxembourg S.À R.L. Ensemble aiguille et buse d'injecteur de carburant

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