EP2365206B1 - Düse für ein Kraftstoffeinspritzventil für Verbrennungsmotoren und Verfahren zur Herstellung einer Düse - Google Patents

Düse für ein Kraftstoffeinspritzventil für Verbrennungsmotoren und Verfahren zur Herstellung einer Düse Download PDF

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Publication number
EP2365206B1
EP2365206B1 EP10155571.2A EP10155571A EP2365206B1 EP 2365206 B1 EP2365206 B1 EP 2365206B1 EP 10155571 A EP10155571 A EP 10155571A EP 2365206 B1 EP2365206 B1 EP 2365206B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
longitudinal bore
resistant material
fuel injector
internal combustion
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.)
Not-in-force
Application number
EP10155571.2A
Other languages
English (en)
French (fr)
Other versions
EP2365206A1 (de
Inventor
Turhan Yildirim
Nico Kuin
Pierpaolo Miotti
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.)
Wartsila Switzerland Ltd
Original Assignee
Wartsila Switzerland Ltd
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 Wartsila Switzerland Ltd filed Critical Wartsila Switzerland Ltd
Priority to DK10155571T priority Critical patent/DK2365206T3/da
Priority to EP10155571.2A priority patent/EP2365206B1/de
Priority to KR1020110016594A priority patent/KR20110101056A/ko
Priority to JP2011041848A priority patent/JP5798762B2/ja
Priority to CN201110052050.0A priority patent/CN102192063B/zh
Publication of EP2365206A1 publication Critical patent/EP2365206A1/de
Application granted granted Critical
Publication of EP2365206B1 publication Critical patent/EP2365206B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M61/166—Selection of particular materials
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1893—Details of valve member ends not covered by groups F02M61/1866 - F02M61/188

Definitions

  • the present invention relates to fuel injectors for internal combustion engines.
  • the invention relates in particular to a fuel injector for large four- or two-stroke internal combustion engines with or without crosshead, such as diesel engines for marine propulsion or stationary engines to supply power.
  • the present invention relates to a nozzle for a fuel injector and to a method for manufacturing such nozzle.
  • EP-A-1549449 discloses a method of manufacturing a nozzle tip wherein in a mould a corrosion-resistant first alloy is arranged in an outer area which is to constitute the outer surface of a nozzle around the nozzle bores. A second alloy is used in another area of the nozzle. The materials in the mould are treated by isostatic pressing into a consolidated material. The boundary area between the two alloys should be free of cracks.
  • EP-A-1549449 A problem of the solution disclosed in EP-A-1549449 is that it is expensive. Additionally, the inner or outer part needs a minimum thickness of one ore more millimetres and there is a risk of lack of fusion between materials.
  • WO93/07386 discloses a nozzle for a fuel injector for internal combustion engines, having a body of corrosion-resistant material with a longitudinal bore closed at its bottom end and having a cylindrical guide surface, wherein a plurality of nozzle bores is formed in a lateral wall of the body.
  • WO03/006821 and DE10318135 disclose injectors wherein a wear resistant layer if formed on an inner surface of the injector body.
  • the object of the present invention is to provide an improved nozzle and a method of manufacturing such nozzle which will overcome the above problems.
  • this object is achieved by a nozzle having the features of claim 1 and by a method of manufacturing a nozzle having the features of claim 5.
  • a nozzle for a fuel injector for internal combustion engines is indicated 10.
  • the nozzle 10 has a body 12 of corrosion-resistant material.
  • the body 12 has no coating on its outer surface.
  • a material can be defined as corrosion resistant, in the application in combustion chambers of large diesel engines, especially diesel engines which burn heavy fuel oils (without coatings on the outer surface), if the chromium content is grater than 20% (mass per cent).
  • corrosion resistant materials examples include: Stellite 6, Haynes 188, Stellite 4, Inconel MA 758, Haynes 230, Nicofer 6125GT, Alloy 6052, Nimonic 81, Inconel 671, Haynes 160.
  • the body 12 has a longitudinal bore 14 closed at its bottom end and having a cylindrical guide surface 16.
  • the longitudinal bore is designed for receiving an axially slidable valve element 26 having a cut-off portion in contact with the cylindrical guide surface 16.
  • a plurality of nozzle bores 18 is formed in a lateral wall of the body.
  • the nozzle bores 18 have respective inner openings facing into the longitudinal bore 14 and outlet openings open on an outer surface of the body 12.
  • the cylindrical guide surface 16 is formed by an inner surface of a tubular sleeve 24 of wear resistant material.
  • the sleeve 24 is inserted into the longitudinal bore 14 of the body 12 of corrosion resistant material.
  • the sleeve 24 can be pressed in or shrink fitted into the longitudinal bore 14. Alternatively, the sleeve can be floating with respect to the longitudinal bore 14.
  • the nozzle bores 18 extend through the lateral wall of the sleeve 24.
  • Figure 2 shows a variant of the embodiment of figure 3, wherein a tubular sleeve 28 of heat conducting material is fitted between the open end of the longitudinal bore 14 and a top front surface of the tubular sleeve 24.
  • the sleeve 28 is made of a material which has a better coefficient of thermal conductivity than the sleeve 24 of wear resistant material and is effective for transporting heat away from the lower part of the nozzle 10.

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 (6)

  1. Eine Düse (10) für einen Kraftstoffinjektor für Verbrennungsmotoren, aufweisend einen Körper (12) aus korrosionsbeständigem Material mit einer Längsbohrung (14), welche an ihrem unteren Ende verschlossen ist, und einer zylindrischen Führungsoberfläche (16), wobei eine Mehrzahl von Düsenbohrungen (18) in einer Seitenwand des Körpers (12) ausgebildet sind, wobei die Düsenbohrungen (18) entsprechende innere Öffnungen aufweisen, welche in die Längsbohrung (14) hinein zeigen, und Auslassöffnungen aufweisen, welche an einer äußeren Oberfläche des Körpers (12) offen sind,
    dadurch gekennzeichnet, dass
    die zylindrische Führungsoberfläche (16) auf einer röhrenförmigen Hülse (24) aus verschleißfestem Material ausgebildet ist, welche in die Längsbohrung (14) eingebracht wurde.
  2. Düse gemäß Anspruch 1, dadurch gekennzeichnet, dass korrosionsbeständige Material einen Chrom-Anteil von mehr als 20 Gew.-% aufweist.
  3. Düse gemäß Anspruch 1, dadurch gekennzeichnet, dass die röhrenförmige Hülse (24) aus verschleißfestem Material in Bezug auf die Längsbohrung (14) hineingepresst, aufgeschrumpft oder beweglich ("floating") ist.
  4. Düse gemäß Anspruch 1, dadurch gekennzeichnet, dass das eine zweite Hülse (28) aus wärmeleitendem Material in die Längsbohrung (14) zwischen einem offenen Ende der Längsbohrung (14) und einer Stirnoberfläche der röhrenförmigen Hülse (24) aus verschleißfestem Material eingepasst ist.
  5. Ein Verfahren zur Herstellung einer Düse (10) für einen Kraftstoffinjektor für Verbrennungsmotoren, aufweisend:
    Ausbilden eines Körpers (12) aus korrosionsbeständigem Material mit einer Längsbohrung (14), welche an ihrem unteren Ende verschlossen ist, und eine zylindrische Führungsoberfläche (16) aufweist,
    Ausbilden einer Mehrzahl von Düsenbohrungen (18) in einer Seitenwand des Körpers (12), wobei die Düsenbohrungen (18) entsprechende innere Öffnungen aufweisen, welche in die Längsbohrung (14) hinein zeigen, und Auslassöffnungen aufweisen, welche an einer äußeren Oberfläche des Körpers (12) offen sind,
    dadurch gekennzeichnet, dass
    die zylindrische Führungsoberfläche (16) auf einer röhrenförmigen Hülse (24) aus verschleißfestem Material ausgebildet ist, welche in die Längsbohrung (14) eingebracht wurde.
  6. Verfahren gemäß Anspruch 5, dadurch gekennzeichnet, dass die röhrenförmige Hülse (24) aus verschleißfestem Material in Bezug auf die Längsbohrung (14) hineingepresst, aufgeschrumpft oder beweglich ("floating") ist.
EP10155571.2A 2010-03-05 2010-03-05 Düse für ein Kraftstoffeinspritzventil für Verbrennungsmotoren und Verfahren zur Herstellung einer Düse Not-in-force EP2365206B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK10155571T DK2365206T3 (da) 2010-03-05 2010-03-05 Dyse til en brændstofindsprøjtningsindretning til motorer med indvendig forbrænding og fremgangsmåde til fremstilling af en dyse
EP10155571.2A EP2365206B1 (de) 2010-03-05 2010-03-05 Düse für ein Kraftstoffeinspritzventil für Verbrennungsmotoren und Verfahren zur Herstellung einer Düse
KR1020110016594A KR20110101056A (ko) 2010-03-05 2011-02-24 내연기관 연료주입기용 노즐 및 노즐 제조방법
JP2011041848A JP5798762B2 (ja) 2010-03-05 2011-02-28 内燃エンジン用燃料噴射器のノズル、及びノズルの製造方法
CN201110052050.0A CN102192063B (zh) 2010-03-05 2011-03-04 用于内燃机喷油器的喷油嘴以及制造喷油嘴的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10155571.2A EP2365206B1 (de) 2010-03-05 2010-03-05 Düse für ein Kraftstoffeinspritzventil für Verbrennungsmotoren und Verfahren zur Herstellung einer Düse

Publications (2)

Publication Number Publication Date
EP2365206A1 EP2365206A1 (de) 2011-09-14
EP2365206B1 true EP2365206B1 (de) 2014-04-30

Family

ID=42732225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10155571.2A Not-in-force EP2365206B1 (de) 2010-03-05 2010-03-05 Düse für ein Kraftstoffeinspritzventil für Verbrennungsmotoren und Verfahren zur Herstellung einer Düse

Country Status (5)

Country Link
EP (1) EP2365206B1 (de)
JP (1) JP5798762B2 (de)
KR (1) KR20110101056A (de)
CN (1) CN102192063B (de)
DK (1) DK2365206T3 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK179113B1 (en) * 2015-04-29 2017-11-06 Hans Jensen Lubricators As Lubricant injector for large slow-running two-stroke engine and production method
GB2563928B (en) * 2017-06-30 2019-11-13 Ricardo Uk Ltd Injector
KR101873696B1 (ko) * 2017-11-01 2018-07-02 이수철 이종재료를 이용한 가스밸브노즐
KR20200045596A (ko) 2018-10-22 2020-05-06 (주)팀솔루션 연료충진 로봇 로딩암 시스템
BR102019004737A2 (pt) * 2019-03-11 2020-10-06 Fmc Technologies Do Brasil Ltda Material compósito com camada difundida revestida
EP4423384A1 (de) * 2021-10-29 2024-09-04 Ganser CRS AG Brennstoffeinspritzventil für verbrennungskraftmaschinen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052937A1 (de) * 1980-11-20 1982-06-02 B & W DIESEL A/S Kraftstoffeinspritzventil für Brennkraftmaschinen

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
ATE73207T1 (de) * 1986-05-22 1992-03-15 Osamu Matsumura Einspritzvorrichtung fuer kraftstoff.
DK167502B1 (da) * 1991-10-04 1993-11-08 Man B & W Diesel Gmbh Braendselsinjektor til forbraendingsmotorer
DK0569655T3 (da) * 1992-05-11 1996-02-19 New Sulzer Diesel Ag Dysehoved til en brændstofindsprøjtningsindretning
JPH08144896A (ja) * 1994-11-25 1996-06-04 Zexel Corp 可変噴孔型燃料噴射ノズル
DE69922087T2 (de) * 1998-06-24 2005-12-01 Delphi Technologies, Inc., Troy Brennstoffeinspritzdüse
JP2001221123A (ja) * 2000-02-07 2001-08-17 Nissan Diesel Motor Co Ltd 燃料噴射ノズルの冷却構造
DE10133433A1 (de) * 2001-07-10 2003-02-20 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
JP4607383B2 (ja) * 2001-07-30 2011-01-05 いすゞ自動車株式会社 燃料噴射インジェクタの製造方法及び燃料噴射ポンプの製造方法
JP2003097392A (ja) * 2001-09-20 2003-04-03 Yamaha Motor Co Ltd 燃料噴射エンジンのインジェクタ配置構造
JP2004003435A (ja) * 2002-04-23 2004-01-08 Denso Corp 内燃機関用燃料噴射弁およびその製造方法
DK200201498A (da) * 2002-10-07 2004-04-08 Man B & W Diesel As En forstöver til en brændselsventil i en dieselmotor, samt en fremgangsmåde til fremstilling af en forstöver
CN100579690C (zh) 2002-10-07 2010-01-13 曼B与W狄赛尔公司 制造柴油机中燃油阀的喷嘴的方法及喷嘴
WO2008071187A1 (en) 2006-12-15 2008-06-19 Man Diesel A/S A fuel injector for an internal combustion engine
JP2008291738A (ja) * 2007-05-24 2008-12-04 Denso Corp 燃料噴射弁
JP4866336B2 (ja) * 2007-11-28 2012-02-01 株式会社ケーヒン 電磁式燃料噴射弁
JP2009236095A (ja) * 2008-03-28 2009-10-15 Denso Corp 燃料噴射装置

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0052937A1 (de) * 1980-11-20 1982-06-02 B & W DIESEL A/S Kraftstoffeinspritzventil für Brennkraftmaschinen

Also Published As

Publication number Publication date
CN102192063B (zh) 2017-06-27
EP2365206A1 (de) 2011-09-14
DK2365206T3 (da) 2014-05-19
CN102192063A (zh) 2011-09-21
JP5798762B2 (ja) 2015-10-21
JP2011185266A (ja) 2011-09-22
KR20110101056A (ko) 2011-09-15

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