EP1321661A3 - Fuel injection valve for internal combustion engines - Google Patents

Fuel injection valve for internal combustion engines Download PDF

Info

Publication number
EP1321661A3
EP1321661A3 EP02017114A EP02017114A EP1321661A3 EP 1321661 A3 EP1321661 A3 EP 1321661A3 EP 02017114 A EP02017114 A EP 02017114A EP 02017114 A EP02017114 A EP 02017114A EP 1321661 A3 EP1321661 A3 EP 1321661A3
Authority
EP
European Patent Office
Prior art keywords
valve
bore
internal combustion
annular groove
combustion engines
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
EP02017114A
Other languages
German (de)
French (fr)
Other versions
EP1321661B1 (en
EP1321661A2 (en
Inventor
Friedrich Boecking
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1321661A2 publication Critical patent/EP1321661A2/en
Publication of EP1321661A3 publication Critical patent/EP1321661A3/en
Application granted granted Critical
Publication of EP1321661B1 publication Critical patent/EP1321661B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M61/1873—Valve seats or member ends having circumferential grooves or ridges, e.g. toroidal
    • 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
    • F02M61/1866—Valve seats or member ends having multiple cones

Landscapes

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

Abstract

Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Ventilkörper (1), in dem in einer Bohrung (3) eine kolbenförmige Ventilnadel (5) längsverschiebbar angeordnet ist. Zwischen der Ventilnadel (5) und der Wand der Bohrung (3) ist ein mit Kraftstoff befüllbarer Druckraum (19) ausgebildet, aus dem Kraftstoff wenigstens einer am brennraumseitigen Ende der Bohrung (3) ausgebildeten Einspritzöffnung (11) zufließen kann. Am brennraumseitigen Ende der Bohrung (3) ist ein konischer Ventilsitz (9) ausgebildet, an dem die Ventilnadel (5) in ihrer Schließstellung mit einer an ihrem brennraumseitigen Ende ausgebildeten Ventildichtfläche (7) zur Abdichtung der wenigstens einen Einspritzöffnung (11) gegen den Druckraum (19) zur Anlage kommt. Die Ventildichtfläche (7) umfasst eine erste konische Fläche (30) und eine zweite konische Fläche (32). Im Ventilsitz (9) verläuft in einer Radialebene der Bohrung (3) eine erste Ringnut (36) und eine stromabwärts der ersten Ringnut (36) und parallel zu dieser angeordneten zweite Ringnut (38) (Fig. 1).

Figure 00000001
Fuel injection valve for internal combustion engines with a valve body (1) in which in a bore (3) a piston-shaped valve needle (5) is arranged longitudinally displaceable. Between the valve needle (5) and the wall of the bore (3) a fuel-filled pressure chamber (19) is formed from the fuel at least one of the combustion chamber end of the bore (3) formed injection port (11) can flow. At the combustion chamber end of the bore (3), a conical valve seat (9) is formed, on which the valve needle (5) in its closed position with a formed at its combustion chamber end valve sealing surface (7) for sealing the at least one injection port (11) against the pressure chamber (19) comes to rest. The valve sealing surface (7) comprises a first conical surface (30) and a second conical surface (32). In the valve seat (9) runs in a radial plane of the bore (3) has a first annular groove (36) and a downstream of the first annular groove (36) and arranged parallel to this second annular groove (38) (Fig. 1).
Figure 00000001
EP02017114A 2001-12-22 2002-07-30 Fuel injection valve for internal combustion engines Expired - Lifetime EP1321661B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10163908A DE10163908A1 (en) 2001-12-22 2001-12-22 Fuel injection valve for internal combustion engines
DE10163908 2001-12-22

Publications (3)

Publication Number Publication Date
EP1321661A2 EP1321661A2 (en) 2003-06-25
EP1321661A3 true EP1321661A3 (en) 2005-07-13
EP1321661B1 EP1321661B1 (en) 2009-09-16

Family

ID=7710830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017114A Expired - Lifetime EP1321661B1 (en) 2001-12-22 2002-07-30 Fuel injection valve for internal combustion engines

Country Status (4)

Country Link
US (1) US6789783B2 (en)
EP (1) EP1321661B1 (en)
JP (1) JP2003201938A (en)
DE (2) DE10163908A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10359302A1 (en) * 2003-12-17 2005-07-21 Robert Bosch Gmbh Valve body with multi-cone geometry at the valve seat
JP4197506B2 (en) * 2004-08-31 2008-12-17 株式会社パイオラックス Cut valve
US7578450B2 (en) * 2005-08-25 2009-08-25 Caterpillar Inc. Fuel injector with grooved check member
US7360722B2 (en) * 2005-08-25 2008-04-22 Caterpillar Inc. Fuel injector with grooved check member
US20070200011A1 (en) * 2006-02-28 2007-08-30 Caterpillar Inc. Fuel injector having nozzle member with annular groove
DE202006007883U1 (en) * 2006-05-17 2006-10-19 Robert Bosch Gmbh Fuel injector for internal combustion engine, has two guides arranged at two sides that are turned towards and away of injection opening, respectively, where ratio of length in relation to diameter of each guide lies in specific range
US8006715B2 (en) 2007-09-20 2011-08-30 Caterpillar Inc. Valve with thin-film coating
DE102008039920A1 (en) * 2008-08-27 2010-03-04 Continental Automotive Gmbh Nozzle body, nozzle assembly and fuel injector, and method of making a nozzle body
JP2012007529A (en) * 2010-06-24 2012-01-12 Toyota Motor Corp Fuel injection valve
DE102013107390B4 (en) * 2013-07-12 2023-06-07 Svm Schultz Verwaltungs-Gmbh & Co. Kg Pressure control valve with control element
US9126223B2 (en) * 2013-10-31 2015-09-08 Nordson Corporation Dispensing module and method for dispensing an adhesive
US9108214B2 (en) * 2013-10-31 2015-08-18 Nordson Corporation Dispensing module having a sealing zone and method for dispensing an adhesive
CN105298706B (en) * 2014-07-09 2017-09-29 江苏大学 The needle valve assembly of fuel injection equipment (FIE)
CN107208593B (en) * 2015-01-30 2020-04-14 日立汽车系统株式会社 Fuel injection valve
EP3156641A1 (en) * 2015-10-14 2017-04-19 Continental Automotive GmbH Injector for injecting fluid
DE102016203028A1 (en) * 2016-02-26 2017-08-31 Bayerische Motoren Werke Aktiengesellschaft fuel injector
DE102016215637A1 (en) * 2016-08-19 2018-02-22 Robert Bosch Gmbh fuel Injector
US10711902B2 (en) * 2017-01-31 2020-07-14 Fujikin Incorporated Flow dividing valve
CN108286626A (en) * 2018-03-07 2018-07-17 烟台杰瑞石油装备技术有限公司 A kind of valve base sealing structure with annular groove
CN114165947A (en) * 2021-09-19 2022-03-11 青岛海尔空调器有限总公司 Heat exchanger, refrigeration cycle system and air conditioner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820513A1 (en) * 1998-05-08 1999-11-11 Mtu Friedrichshafen Gmbh Fuel injection nozzle for internal combustion engine
DE10020148A1 (en) * 1999-04-26 2000-11-16 Toyota Motor Co Ltd Fuel injector assembly for an internal combustion engine, comprises angular fuel ports arranged around a peripheral edge
DE19931891A1 (en) * 1999-07-08 2001-01-18 Siemens Ag Fuel-injection valve for combustion engine
DE10109345A1 (en) * 2000-02-29 2001-08-30 Denso Corp Fuel injection nozzle head offers seating face for needle valve seat where downstream shutter stabilizes fuel flow section upstream of port at all needle lift values.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822789A (en) * 1956-06-15 1958-02-11 Exxon Research Engineering Co Injection of heavy fuel into diesel engines and valve means therefor
EP0219591B1 (en) * 1985-10-22 1988-12-28 VOEST-ALPINE AUTOMOTIVE Gesellschaft m.b.H. Method of manufacturing an injection nozzle housing
DE3624477A1 (en) * 1986-07-19 1988-01-28 Bosch Gmbh Robert INJECTION VALVE
DE19507188C1 (en) * 1995-03-02 1996-08-14 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19507171C1 (en) * 1995-03-02 1996-08-14 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19634933B4 (en) 1996-08-29 2007-06-06 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE19942370A1 (en) 1999-09-04 2001-03-22 Bosch Gmbh Robert Injection nozzle for internal combustion engines with an annular groove in the nozzle needle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820513A1 (en) * 1998-05-08 1999-11-11 Mtu Friedrichshafen Gmbh Fuel injection nozzle for internal combustion engine
DE10020148A1 (en) * 1999-04-26 2000-11-16 Toyota Motor Co Ltd Fuel injector assembly for an internal combustion engine, comprises angular fuel ports arranged around a peripheral edge
DE19931891A1 (en) * 1999-07-08 2001-01-18 Siemens Ag Fuel-injection valve for combustion engine
DE10109345A1 (en) * 2000-02-29 2001-08-30 Denso Corp Fuel injection nozzle head offers seating face for needle valve seat where downstream shutter stabilizes fuel flow section upstream of port at all needle lift values.

Also Published As

Publication number Publication date
DE10163908A1 (en) 2003-07-03
JP2003201938A (en) 2003-07-18
EP1321661B1 (en) 2009-09-16
EP1321661A2 (en) 2003-06-25
DE50213847D1 (en) 2009-10-29
US20030132413A1 (en) 2003-07-17
US6789783B2 (en) 2004-09-14

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