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EP2570648A4 - Electromagnetic fuel-injection valve - Google Patents

Electromagnetic fuel-injection valve

Info

Publication number
EP2570648A4
EP2570648A4 EP11780515.0A EP11780515A EP2570648A4 EP 2570648 A4 EP2570648 A4 EP 2570648A4 EP 11780515 A EP11780515 A EP 11780515A EP 2570648 A4 EP2570648 A4 EP 2570648A4
Authority
EP
European Patent Office
Prior art keywords
guide bush
core
electromagnetic fuel
injection valve
valve
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
EP11780515.0A
Other languages
German (de)
French (fr)
Other versions
EP2570648A1 (en
EP2570648B1 (en
Inventor
Masateru Moriya
Tomoyuki Oomura
Yutaka Inomata
Atsushi Okamoto
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.)
Keihin Corp
Original Assignee
Keihin Corp
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 Keihin Corp filed Critical Keihin Corp
Publication of EP2570648A1 publication Critical patent/EP2570648A1/en
Publication of EP2570648A4 publication Critical patent/EP2570648A4/en
Application granted granted Critical
Publication of EP2570648B1 publication Critical patent/EP2570648B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02M61/04—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
    • 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
    • F02M51/0671—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 having an elongated valve body attached thereto
    • F02M51/0675—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 having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • 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
    • F02M61/188—Spherical or partly spherical shaped valve member ends
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9053—Metals
    • F02M2200/9069—Non-magnetic metals

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)

Abstract

In the disclosed electromagnetic fuel-injection valve: a non-magnetic or weakly magnetic guide bush (19) is affixed at the inner periphery of an immobile core (6); the front end of the guide bush (19) protrudes from the suction surface (6a) of the immobile core (6); during excitation of a coil (37), by means of a mobile core (16) being caused to contact the front end of the guide bush (19), the opening boundary of a valve body (15) is defined, and an air gap (g) is formed between the immobile core (6) and the mobile core (16); and a sliding member (20) that is slidably borne at the inner peripheral surface of the guide bush (19) is provided to a valve assembly (V). As a result, a structure-simple electromagnetic fuel injection valve is provided wherein the opening/closing postures of the valve body can be effectively stabilized, and moreover at the time of demagnetization of the coil, valve closing responsiveness can be favorably obtained.
EP11780515.0A 2010-05-14 2011-04-27 Electromagnetic fuel-injection valve Active EP2570648B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010112352A JP5623784B2 (en) 2010-05-14 2010-05-14 Electromagnetic fuel injection valve
PCT/JP2011/060244 WO2011142258A1 (en) 2010-05-14 2011-04-27 Electromagnetic fuel-injection valve

Publications (3)

Publication Number Publication Date
EP2570648A1 EP2570648A1 (en) 2013-03-20
EP2570648A4 true EP2570648A4 (en) 2013-12-18
EP2570648B1 EP2570648B1 (en) 2017-03-15

Family

ID=44914314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11780515.0A Active EP2570648B1 (en) 2010-05-14 2011-04-27 Electromagnetic fuel-injection valve

Country Status (5)

Country Link
EP (1) EP2570648B1 (en)
JP (1) JP5623784B2 (en)
CN (1) CN102893016B (en)
MX (1) MX2012013236A (en)
WO (1) WO2011142258A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5862941B2 (en) * 2011-11-08 2016-02-16 株式会社デンソー Fuel injection valve
JP6035648B2 (en) * 2012-11-05 2016-11-30 株式会社ケーヒン Electromagnetic fuel injection valve
JP5857952B2 (en) 2012-12-26 2016-02-10 株式会社デンソー Fuel injection valve
JP6020194B2 (en) * 2013-01-22 2016-11-02 株式会社デンソー Fuel injection valve
JP6087210B2 (en) * 2013-05-24 2017-03-01 日立オートモティブシステムズ株式会社 Fuel injection valve
EP3009658B1 (en) 2014-10-15 2017-09-06 Continental Automotive GmbH Injector for injecting fluid
JP6266123B2 (en) * 2014-10-28 2018-01-24 三菱電機株式会社 Fuel injection valve
JP2016166534A (en) * 2015-03-09 2016-09-15 日立オートモティブシステムズ株式会社 Fuel injection valve
JP6426556B2 (en) * 2015-08-06 2018-11-21 株式会社デンソー Fuel injection device
JP6449741B2 (en) 2015-09-02 2019-01-09 株式会社デンソー Fuel injection device
JP6292272B2 (en) * 2016-09-28 2018-03-14 株式会社デンソー Fuel injection valve
CN110651116B (en) * 2017-05-23 2021-12-24 三菱电机株式会社 Ejector
JP7056369B2 (en) * 2017-07-28 2022-04-19 株式会社デンソー Valve device
KR102049802B1 (en) 2018-01-26 2019-11-28 (주)모토닉 Damping construction for electronic solenoid valve
JP6451883B2 (en) * 2018-02-05 2019-01-16 株式会社デンソー Fuel injection valve
JP6773927B1 (en) * 2020-01-24 2020-10-21 株式会社ケーヒン Electromagnetic fuel injection valve
JP2023062216A (en) * 2020-03-26 2023-05-08 日立Astemo株式会社 Fuel injection device
DE112021002046T5 (en) * 2020-03-31 2023-04-06 Denso Corporation fuel injector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042526A1 (en) * 2001-11-16 2003-05-22 Hitachi, Ltd. Fuel injection valve
JP2005069410A (en) * 2003-08-26 2005-03-17 Keihin Corp Solenoid valve
JP2008144663A (en) * 2006-12-08 2008-06-26 Denso Corp Injector
JP2009221879A (en) * 2008-03-13 2009-10-01 Keihin Corp Manufacturing method of electromagnetic fuel injection valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3851122B2 (en) * 2001-07-16 2006-11-29 ボッシュ株式会社 Fuel injection valve
JP3901659B2 (en) * 2003-03-31 2007-04-04 株式会社ケーヒン Electromagnetic fuel injection valve
JP2008031853A (en) * 2006-07-26 2008-02-14 Denso Corp Fuel injection valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003042526A1 (en) * 2001-11-16 2003-05-22 Hitachi, Ltd. Fuel injection valve
JP2005069410A (en) * 2003-08-26 2005-03-17 Keihin Corp Solenoid valve
JP2008144663A (en) * 2006-12-08 2008-06-26 Denso Corp Injector
JP2009221879A (en) * 2008-03-13 2009-10-01 Keihin Corp Manufacturing method of electromagnetic fuel injection valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011142258A1 *

Also Published As

Publication number Publication date
WO2011142258A1 (en) 2011-11-17
JP5623784B2 (en) 2014-11-12
EP2570648A1 (en) 2013-03-20
MX2012013236A (en) 2013-01-24
CN102893016B (en) 2015-01-21
JP2011241701A (en) 2011-12-01
EP2570648B1 (en) 2017-03-15
CN102893016A (en) 2013-01-23

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Owner name: HITACHI ASTEMO, LTD., HITACHINAKA-SHI, JP

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