EP0301620A3 - Electromagnetically controlled fuel injector for feeding fuel to internal combustion engines - Google Patents

Electromagnetically controlled fuel injector for feeding fuel to internal combustion engines Download PDF

Info

Publication number
EP0301620A3
EP0301620A3 EP88201411A EP88201411A EP0301620A3 EP 0301620 A3 EP0301620 A3 EP 0301620A3 EP 88201411 A EP88201411 A EP 88201411A EP 88201411 A EP88201411 A EP 88201411A EP 0301620 A3 EP0301620 A3 EP 0301620A3
Authority
EP
European Patent Office
Prior art keywords
anchor
internal combustion
combustion engines
core
electromagnetically controlled
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Withdrawn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
EP88201411A
Other languages
German (de)
French (fr)
Other versions
EP0301620A2 (en
Inventor
Roberto De Concini
Luciano Ramacciotti
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.)
Weber SRL
Original Assignee
Weber SRL
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 Weber SRL filed Critical Weber SRL
Publication of EP0301620A2 publication Critical patent/EP0301620A2/en
Publication of EP0301620A3 publication Critical patent/EP0301620A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F02M51/0667—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 acting as a valve or having a short valve body attached thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks

Landscapes

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

Abstract

The electroinjector is equipped with a central magnetic core (10) from which a guide tube (19) protrudes, which acts as a guide for an anchor (12) of ferromagnetic material, which bears the injector shutter (17). In a form of practical embodiment, the anchor (12), in its opening movement, comes to stop against a shoulder element (24) made from an amagnetic material fastened on the core (10) in such a protruding position, as to define an air gap (T) and prevent the core (10) and the anchor (12) from magnetically sticking to each other. The shoulder element (24) is provided with a fastening cylindrical portion (30), and an adjacent portion (31) with a prevailingly radial development, which acts as the stop portion. The element, which can also be fastened onto the anchor (10), can be obtained from a rolled sheet or by drawing a thin tube.
EP88201411A 1987-07-27 1988-07-06 Electromagnetically controlled fuel injector for feeding fuel to internal combustion engines Withdrawn EP0301620A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21450/87A IT1222137B (en) 1987-07-27 1987-07-27 IMPROVED ELECTROINJECTOR FOR FOOD FUEL WITH INTERNAL COMBUSTION ENGINES
IT2145087 1987-07-27

Publications (2)

Publication Number Publication Date
EP0301620A2 EP0301620A2 (en) 1989-02-01
EP0301620A3 true EP0301620A3 (en) 1990-02-07

Family

ID=11181960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201411A Withdrawn EP0301620A3 (en) 1987-07-27 1988-07-06 Electromagnetically controlled fuel injector for feeding fuel to internal combustion engines

Country Status (2)

Country Link
EP (1) EP0301620A3 (en)
IT (1) IT1222137B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1232734B (en) * 1989-05-16 1992-03-04 Weber Srl SERIES OF FUEL INJECTION DEVICES FOR ENDOTHERMAL MOTORS WITH ELECTROMAGNETIC DRIVE
US5207387A (en) * 1991-07-29 1993-05-04 Siemens Automotive L.P. Means for attenuating audible noise from a solenoid-operated fuel injector
US5328100A (en) * 1992-09-22 1994-07-12 Siemens Automotive L.P. Modified armature for low noise injector
EP0683861B1 (en) * 1993-12-09 1998-03-04 Robert Bosch Gmbh Electromagnetic valve
US5704553A (en) * 1995-10-30 1998-01-06 Wieczorek; David P. Compact injector armature valve assembly
IT1310497B1 (en) * 1999-09-28 2002-02-18 Magneti Marelli Spa FUEL INJECTOR.
ITBO20010483A1 (en) * 2001-07-27 2003-01-27 Magneti Marelli Powertrain Spa ELECTROMAGNETIC ACTUATOR FOR A FUEL INJECTOR

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058466A (en) * 1979-09-08 1981-04-08 Bosch Gmbh Robert Electromagnetic fuel injection valve
EP0172591A1 (en) * 1984-07-12 1986-02-26 WEBER S.r.l. Improved electroinjector for feeding fuel to an internal combustion engine
GB2198589A (en) * 1986-11-15 1988-06-15 Hitachi Ltd Electromagnetic fuel injectors
WO1988004727A1 (en) * 1986-12-23 1988-06-30 Lucas Industries Public Limited Company Fuel injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058466A (en) * 1979-09-08 1981-04-08 Bosch Gmbh Robert Electromagnetic fuel injection valve
EP0172591A1 (en) * 1984-07-12 1986-02-26 WEBER S.r.l. Improved electroinjector for feeding fuel to an internal combustion engine
GB2198589A (en) * 1986-11-15 1988-06-15 Hitachi Ltd Electromagnetic fuel injectors
WO1988004727A1 (en) * 1986-12-23 1988-06-30 Lucas Industries Public Limited Company Fuel injector

Also Published As

Publication number Publication date
IT1222137B (en) 1990-09-05
IT8721450A0 (en) 1987-07-27
EP0301620A2 (en) 1989-02-01

Similar Documents

Publication Publication Date Title
GB1528059A (en) Combined fuel injection and intake valve for electronic fuel injection engine systems
JPS58137864U (en) electromagnetic fuel injector
DE69203197D1 (en) Electromagnetically actuated fuel atomization and metering valve for a fuel intake device of an internal combustion engine.
KR860007471A (en) Electronically Operated Fuel Injection Valve
GB1064679A (en) Fuel injectors for internal combustion engines
EP0301620A3 (en) Electromagnetically controlled fuel injector for feeding fuel to internal combustion engines
ATE49033T1 (en) ELECTROMAGNETICALLY ACTUATED FUEL INJECTION VALVE.
EP0070262A3 (en) Carburetor for internal combustion engines with electromagnetic controlled organs for positioning the trottle in two positions with small openings
GB2062092B (en) Electromagnetically actuated fuel injection valve for internal-combustion engines
GB8827515D0 (en) Excitation coil for fuel injector metering & atomizing valve on i c engine
DE3562290D1 (en) Electromagnetically actuated fuel injector
DE69200841D1 (en) FUEL INJECTION VALVE FOR COMBUSTION ENGINES.
JPS5666449A (en) Fuel injection valve
GB1495873A (en) Closed loop air-fuel ratio control system for use with internal combustion engine
DE3662804D1 (en) Electromagnetically actuated fuel injection valve
JPS55107061A (en) Electro magnetically operated fuel injection valve for internal combustion engine
JPS5726262A (en) Valve driving mechanism of injector
ATE36189T1 (en) INJECTOR.
JPS5799265A (en) Magnetic pole structure in electromagnetic fuel injection valve
JPS6038164U (en) Electromagnetic fuel injection valve for internal combustion engines
JPS5756661A (en) Fuel injection valve
JPS59131573U (en) electromagnetic fuel injector
JPS5386928A (en) Fuel suppy device of gasoline engine
JPS6026282U (en) fuel injection pump solenoid valve
JPS575543A (en) Solenoid fuel injection valve for internal combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900710

17Q First examination report despatched

Effective date: 19910304

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920202