EP2466109A1 - Ensemble de soupape pour soupape d'injection et soupape d'injection - Google Patents

Ensemble de soupape pour soupape d'injection et soupape d'injection Download PDF

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Publication number
EP2466109A1
EP2466109A1 EP10194884A EP10194884A EP2466109A1 EP 2466109 A1 EP2466109 A1 EP 2466109A1 EP 10194884 A EP10194884 A EP 10194884A EP 10194884 A EP10194884 A EP 10194884A EP 2466109 A1 EP2466109 A1 EP 2466109A1
Authority
EP
European Patent Office
Prior art keywords
valve
upper retainer
valve needle
cavity
armature
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.)
Withdrawn
Application number
EP10194884A
Other languages
German (de)
English (en)
Inventor
Ileana Romeo
Francesco Lenzi
Matteo Soriani
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP10194884A priority Critical patent/EP2466109A1/fr
Publication of EP2466109A1 publication Critical patent/EP2466109A1/fr
Withdrawn legal-status Critical Current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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/066—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
    • 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

Definitions

  • the respective injection valve may be suited to dose fluids under very high pressures.
  • the pressures may be in case of a gasoline engine, for example, in the range of up to 200 bar and in the case of diesel engines in the range of up to 2000 bar.
  • a gasoline engine for example, in the range of up to 200 bar
  • diesel engines in the range of up to 2000 bar.
  • the hardness of the upper retainer was increased by applying special hardening processes.
  • this was only possible by using specialized materials for the upper retainer, which are expensive, and by applying additional steps in the production process.
  • the upper retainer had to be provided with special geometries in order to increase the fluid flux of the fuel, and thereby to minimize the sticking phenomena.
  • the injection nozzle 34 may be, for example, an injection hole. However, it may also be of some other type suitable for dosing fluid.
  • the valve assembly 11 is provided with an actuator unit 36 that is preferably an electro-magnetic actuator.
  • the electro-magnetic actuator unit 36 comprises a coil 38, which is preferably arranged inside the housing 16. Furthermore, the electro-magnetic actuator unit 36 comprises the armature 21.
  • the housing 16, the inlet tube 12, the valve body 14, and the armature 21 are forming an electromagnetic circuit.
  • the actuator unit 36 is electrically energized by a connection means 15, which, in turn, may be coupled to an external plug connector.
  • the armature 21 is designed to be coupled to the upper retainer 23 when the valve needle 20 is actuated to leave the closing position, and it is designed to be decoupled from the upper retainer when the valve needle 20 is actuated to move to the closing position.
  • the cavity 18 comprises a fluid outlet portion 40 which is arranged near the seat plate 32.
  • the fluid outlet portion 40 communicates with a fluid inlet portion 42 which is provided in the valve body 14.
  • Fig. 1A shows the main spring 24, the upper retainer 23, the armature 21, and the tubular valve needle 20 of the embodiment of Fig. 1 in more detail.
  • Fig. 2 shows another embodiment of the injection valve.
  • the upper retainer 23 is made in the form of a guide bush, arranged like a collar around the valve needle 20, and the anti-bounce means 22 is made in the form of a permanent magnet.
  • This permanent magnet is fixedly coupled to the valve body 14. Fixing may be achieved, for example, by welding to an inner surface of the valve body 14 in the area of the fluid inlet portion 42 or by providing a step 44 at the fluid inlet portion 42 and coupling the permanent magnet to said step 44.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
EP10194884A 2010-12-14 2010-12-14 Ensemble de soupape pour soupape d'injection et soupape d'injection Withdrawn EP2466109A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10194884A EP2466109A1 (fr) 2010-12-14 2010-12-14 Ensemble de soupape pour soupape d'injection et soupape d'injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10194884A EP2466109A1 (fr) 2010-12-14 2010-12-14 Ensemble de soupape pour soupape d'injection et soupape d'injection

Publications (1)

Publication Number Publication Date
EP2466109A1 true EP2466109A1 (fr) 2012-06-20

Family

ID=43857725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10194884A Withdrawn EP2466109A1 (fr) 2010-12-14 2010-12-14 Ensemble de soupape pour soupape d'injection et soupape d'injection

Country Status (1)

Country Link
EP (1) EP2466109A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014092100A (ja) * 2012-11-05 2014-05-19 Keihin Corp 電磁式燃料噴射弁
WO2016207268A1 (fr) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Soupape de dosage d'un fluide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230376C1 (fr) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De
US5427319A (en) * 1994-03-24 1995-06-27 Siemens Automotive L.P. Fuel injector armature assembly
WO2001014736A1 (fr) * 1999-08-25 2001-03-01 Caterpillar Inc. Arret en ceramique pour injecteur de combustible
DE102005052252A1 (de) * 2005-11-02 2007-05-03 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102008041165A1 (de) * 2008-08-11 2010-02-18 Robert Bosch Gmbh Einspritzventilglied

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230376C1 (fr) * 1992-09-11 1993-04-22 Robert Bosch Gmbh, 7000 Stuttgart, De
US5427319A (en) * 1994-03-24 1995-06-27 Siemens Automotive L.P. Fuel injector armature assembly
WO2001014736A1 (fr) * 1999-08-25 2001-03-01 Caterpillar Inc. Arret en ceramique pour injecteur de combustible
DE102005052252A1 (de) * 2005-11-02 2007-05-03 Robert Bosch Gmbh Brennstoffeinspritzventil
DE102008041165A1 (de) * 2008-08-11 2010-02-18 Robert Bosch Gmbh Einspritzventilglied

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014092100A (ja) * 2012-11-05 2014-05-19 Keihin Corp 電磁式燃料噴射弁
WO2016207268A1 (fr) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Soupape de dosage d'un fluide
US10519909B2 (en) 2015-06-24 2019-12-31 Robert Bosch Gmbh Valve for metering a fluid

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