EP0890735A2 - Soupape d'injection de combustible - Google Patents

Soupape d'injection de combustible Download PDF

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Publication number
EP0890735A2
EP0890735A2 EP98109048A EP98109048A EP0890735A2 EP 0890735 A2 EP0890735 A2 EP 0890735A2 EP 98109048 A EP98109048 A EP 98109048A EP 98109048 A EP98109048 A EP 98109048A EP 0890735 A2 EP0890735 A2 EP 0890735A2
Authority
EP
European Patent Office
Prior art keywords
rounding
spray holes
valve
degree
combustion chamber
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
EP98109048A
Other languages
German (de)
English (en)
Other versions
EP0890735A3 (fr
EP0890735B2 (fr
EP0890735B1 (fr
Inventor
Karl Hofmann
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7835445&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0890735(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0890735A2 publication Critical patent/EP0890735A2/fr
Publication of EP0890735A3 publication Critical patent/EP0890735A3/fr
Application granted granted Critical
Publication of EP0890735B1 publication Critical patent/EP0890735B1/fr
Publication of EP0890735B2 publication Critical patent/EP0890735B2/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
    • 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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • F02M61/184—Discharge orifices having non circular sections

Definitions

  • the invention relates to a fuel injection valve for an internal combustion engine comprising an in a valve body against the restoring force of a valve spring movable valve member with a valve sealing surface, those with a valve seat arranged on the valve body cooperates, and with several below the valve seat spray holes arranged in the valve body, the Inlet openings are rounded.
  • Such a fuel injector for one Internal combustion engine is derived, for example, from EP 0 370 659 A1. By rounding the inlet openings the spray holes will allow a larger amount Fuel through the spray holes in the combustion chamber Internal combustion engine can be injected as a Restriction of the fuel flowing through the spray holes, with a sharp-edged inlet opening results, does not occur.
  • a large Degree of rounding means rounding with a large one Radius, a small degree of rounding a rounding with a small radius.
  • the invention is therefore based on the object Fuel injector of the generic type to further develop that in a simple manner Adjustment of the spray holes to the most varied Relationships, especially to the most varied Installation positions in combustion chambers as well as in a wide variety Combustion chamber shapes is made possible, so that the combustion process is further improved.
  • This task is done with a fuel injector of the type described in the introduction solved that part of the spray holes at least one different rounding degree from the rest of the spray holes having.
  • An advantageous embodiment provides that the Inlet openings of one or more spray holes Another side facing the valve member Have degree of rounding than on their the valve member opposite side.
  • the degree of rounding varies not just from spray hole to spray hole, but also depending on the position of the Inlet openings relative to the valve member at each an inlet opening of the individual spray holes.
  • the degree of rounding Inlet openings of the spray holes on the arrangement of the Spray holes in the valve body, to the installation position in a combustion chamber of the internal combustion engine and on the Combustion chamber shape of the internal combustion engine is adapted.
  • the degree of rounding the inlet opening of the spray hole which of a combustion chamber wall in the installed state is removed, has a greater degree of rounding than the inlet opening one less from the combustion chamber wall far away spray hole. Due to the greater degree of rounding becomes a sharper bundling and one greater length of the sprayed through such a spray hole Fuel jet reached than at one Spray hole, which is an inlet opening with a smaller degree of rounding having.
  • one or more of the spray holes none Show roundness.
  • a fuel injection valve for internal combustion engines shown in Fig. 2 comprises a piston-shaped valve member 41, which is axially displaceable in a bore 42 a valve body 43 is guided.
  • the valve member 41 points at one, the combustion chamber of an internal combustion engine (not shown) facing end a conical Valve sealing surface 44 with which it is conical Valve seat 45 on the inwardly projecting closed end the bore 42 cooperates.
  • the valve body 43 is thereby with its end distant from the combustion chamber by means of a Clamping nut 46 axially against a valve holding body 47 braced, being between the end faces of the valve body 43 and the valve holding body 47 an washer 48 is clamped with a central opening.
  • Valve member 41 At its end facing away from the valve seat 45, the Valve member 41 via a pressure piece 49, which the washer 48 protrudes from a coil spring 50 Trained valve spring, which is attached to a stationary Stop 51, which is arranged on the valve holding body 47 is supported and on the valve member 41 one to Valve seat 45 exerts directed force with a Spring force applied.
  • valve sealing surface 44 and the valve seat 45 are in the wall of the valve body 43 spray holes 53, 57 provided in the combustion chamber of the internal combustion engine flow out.
  • the high-pressure fuel supply takes place in a known manner via a between the stem of the valve member 41 and the wall of the bore 42 formed annular channel 54, the expands into a pressure chamber 55, in which one of an injection pump, not shown, discharge pressure line 56 opens.
  • the inlet openings have 60 of the spray holes 53, 57 curves 61, 62, 63, 64 with different radii, i.e. with different Degrees of rounding.
  • the inlet opening 60 of the spray hole 57 has, for example Rounding 61, 62 with a smaller degree of rounding than the inlet opening 60 of the spray hole 53.
  • the inlet opening greater degrees of rounding has than that of the inlet opening of the spray hole 57 at a point in the combustion chamber of the internal combustion engine arranged which is a greater distance from the combustion chamber wall has than that of the spray hole 57.
  • the Rounding 63, 64 with larger degrees of rounding is namely a stronger concentration of the through the spray hole 53rd sprayed fuel jet, which also has a greater length than that of the Spray hole 57 sprayed fuel jet the case is.
  • spray holes can be used drilled and rounded and only then the remaining spray holes be drilled and rounded.
  • the first ones drilled and rounded spray holes are then at a further HE rounding process more rounded than that last drilled spray holes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
EP98109048.3A 1997-07-11 1998-05-19 Soupape d'injection de combustible Expired - Lifetime EP0890735B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19729827 1997-07-11
DE19729827A DE19729827A1 (de) 1997-07-11 1997-07-11 Kraftstoffeinspritzventil

Publications (4)

Publication Number Publication Date
EP0890735A2 true EP0890735A2 (fr) 1999-01-13
EP0890735A3 EP0890735A3 (fr) 2001-10-10
EP0890735B1 EP0890735B1 (fr) 2006-10-18
EP0890735B2 EP0890735B2 (fr) 2014-09-10

Family

ID=7835445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109048.3A Expired - Lifetime EP0890735B2 (fr) 1997-07-11 1998-05-19 Soupape d'injection de combustible

Country Status (4)

Country Link
US (1) US5992766A (fr)
EP (1) EP0890735B2 (fr)
JP (1) JP4154033B2 (fr)
DE (2) DE19729827A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000060234A1 (fr) * 1999-03-31 2000-10-12 Siemens Aktiengesellschaft Procede et dispositif pour arrondir des aretes d'alesage d'un corps d'ajutage par erosion hydraulique et corps d'ajutage approprie
FR2796104A1 (fr) * 1999-07-08 2001-01-12 Siemens Ag Corps d'injecteur presentant une geometrie optimale d'orifice d'injection et procede pour arrondir les aretes d'un tel orifice
WO2003093669A1 (fr) * 2002-05-02 2003-11-13 Robert Bosch Gmbh Soupape d'injection de carburant pour moteurs a combustion interne

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4189714B2 (ja) 2000-08-03 2008-12-03 株式会社デンソー 燃料噴射装置
DE10156020A1 (de) * 2001-11-15 2003-07-17 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10330256A1 (de) † 2003-07-04 2005-01-20 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen
DE102004062008A1 (de) * 2004-12-23 2006-07-13 Robert Bosch Gmbh Kraftstofffilter mit Auslassöffnungen, die vorzugsweise mit einem hydroerosiven Verfahren bearbeitet sind
US7572997B2 (en) * 2007-02-28 2009-08-11 Caterpillar Inc. EDM process for manufacturing reverse tapered holes
CN102165178A (zh) * 2008-09-24 2011-08-24 丰田自动车株式会社 内燃机的燃料喷射阀及其制造方法
WO2019030078A1 (fr) * 2017-08-08 2019-02-14 Robert Bosch Gmbh Buse d'injecteur de carburant
DE102019202073A1 (de) 2019-02-15 2020-08-20 Robert Bosch Gmbh Verfahren zum Herstellen einer Einspritzdüse zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine und Düsenanordnung mit einer Einspritzdüse

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370659A1 (fr) 1988-11-19 1990-05-30 Lucas Industries Public Limited Company Buse d'injection de combustible

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557772A1 (de) * 1975-12-20 1977-06-23 Kloeckner Humboldt Deutz Ag Brennstoffeinspritzventil
JPS58106167A (ja) † 1981-12-21 1983-06-24 Hino Motors Ltd 内燃機関の燃料噴射ノズル
JPS6049262U (ja) * 1983-09-14 1985-04-06 日産自動車株式会社 デイ−ゼル機関用燃料噴射弁
US4578164A (en) * 1983-08-24 1986-03-25 Nissan Motor Co., Ltd. Method of electrolytically finishing spray-hole of fuel injection nozzle
JPH0267459A (ja) * 1988-08-31 1990-03-07 Nippon Denso Co Ltd 燃料噴射ノズル
JPH0494452A (ja) * 1990-08-08 1992-03-26 Nissan Motor Co Ltd 燃料噴射ノズル
JPH0583367U (ja) * 1992-04-20 1993-11-12 日産ディーゼル工業株式会社 直噴式ディーゼルエンジンの燃料噴射ノズル
DE19507188C1 (de) * 1995-03-02 1996-08-14 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
EP0809017A1 (fr) * 1996-05-22 1997-11-26 Steyr-Daimler-Puch Aktiengesellschaft Injecteur de carburant à deux étages pour moteurs à combustion interne

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370659A1 (fr) 1988-11-19 1990-05-30 Lucas Industries Public Limited Company Buse d'injection de combustible

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000060234A1 (fr) * 1999-03-31 2000-10-12 Siemens Aktiengesellschaft Procede et dispositif pour arrondir des aretes d'alesage d'un corps d'ajutage par erosion hydraulique et corps d'ajutage approprie
FR2796104A1 (fr) * 1999-07-08 2001-01-12 Siemens Ag Corps d'injecteur presentant une geometrie optimale d'orifice d'injection et procede pour arrondir les aretes d'un tel orifice
WO2003093669A1 (fr) * 2002-05-02 2003-11-13 Robert Bosch Gmbh Soupape d'injection de carburant pour moteurs a combustion interne

Also Published As

Publication number Publication date
DE59813768D1 (de) 2006-11-30
US5992766A (en) 1999-11-30
EP0890735A3 (fr) 2001-10-10
EP0890735B2 (fr) 2014-09-10
JPH1193806A (ja) 1999-04-06
JP4154033B2 (ja) 2008-09-24
EP0890735B1 (fr) 2006-10-18
DE19729827A1 (de) 1999-01-14

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